v0.0.357

(cherry picked from commit c0443af63b)

.gitea/workflows/tests.yml

@@ -0,0 +1,55 @@
+
+# https://docs.gitea.com/next/usage/actions/quickstart
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions
+# https://docs.github.com/en/actions/learn-github-actions/contexts#github-context
+
+name: Build Docker and Deploy
+run-name: Build & Deploy ${{ gitea.ref }} on ${{ gitea.actor }}
+
+on:
+  push:
+    branches:
+      - '*'
+      - '**'
+
+
+jobs:
+  run_tests:
+    name: Run goext test-suite  
+    runs-on: bfb-cicd-latest
+    steps:
+
+      - name: Check out code
+        uses: actions/checkout@v3
+
+      - name: Setup go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: '${{ gitea.workspace }}/go.mod'
+
+      - name: Setup packages
+        uses: awalsh128/cache-apt-pkgs-action@latest
+        with:
+          packages: curl python3
+          version: 1.0
+
+      - name: go version
+        run: go version
+
+      - name: Run tests
+        run: cd "${{ gitea.workspace }}" && make test
+
+      - name: Send failure mail
+        if: failure()
+        uses: dawidd6/action-send-mail@v3
+        with:
+          server_address: smtp.fastmail.com
+          server_port: 465
+          secure: true
+          username: ${{secrets.MAIL_USERNAME}}
+          password: ${{secrets.MAIL_PASSWORD}}
+          subject: Pipeline on '${{ gitea.repository }}' failed
+          to: ${{ steps.commiter_info.outputs.MAIL }}
+          from: Gitea Actions <gitea_actions@blackforestbytes.de>
+          body: "Go to https://gogs.blackforestbytes.com/${{ gitea.repository }}/actions"
+

.idea/golinter.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GoLinterSettings">
+    <option name="checkGoLinterExe" value="false" />
+  </component>
+</project>

.idea/sqldialects.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="SqlDialectMappings">
+    <file url="file://$PROJECT_DIR$/sq/sq_test.go" dialect="SQLite" />
+  </component>
+</project>

Makefile

@@ -1,16 +1,17 @@
 
-.PHONY: run test version update-mongo
-
 run:
 	echo "This is a library - can't be run" && false
 
 test:
 	# go test ./...
 	which gotestsum || go install gotest.tools/gotestsum@latest
-	gotestsum --format "testname" -- -tags="timetzdata sqlite_fts5 sqlite_foreign_keys" "./test"
+	gotestsum --format "testname" -- -tags="timetzdata sqlite_fts5 sqlite_foreign_keys" "./..."
+
+test-in-docker:
+	tag="goext_temp_test_image:$(shell uuidgen | tr -d '-')";        \
+	docker build --tag $$tag . -f .gitea/workflows/Dockerfile_tests; \
+	docker run --rm $$tag;                                           \
+	docker rmi $$tag
 
 version:
 	_data/version.sh
-
-update-mongo:
-	_data/update-mongo.sh

README.md

@@ -11,17 +11,19 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 ### Packages:
 
 | Name        | Maintainer | Description                                                                                                   |
-|--------------|------------|---------------------------------------------------------------------------------------------------------------|
+|-------------|------------|---------------------------------------------------------------------------------------------------------------|
 | langext     | Mike       | General uttility/helper functions, (everything thats missing from go standard library)                        |
 | mathext     | Mike       | Utility/Helper functions for math                                                                             |
 | cryptext    | Mike       | Utility/Helper functions for encryption                                                                       |
 | syncext     | Mike       | Utility/Helper funtions for multi-threading / mutex / channels                                                |
 | dataext     | Mike       | Various useful data structures                                                                                |
 | zipext      | Mike       | Utility for zip/gzip/tar etc                                                                                  |
-| reflectext   | Mike       | Utility for golagn reflection                                                                                 |
+| reflectext  | Mike       | Utility for golang reflection                                                                                 |
+| fsext       | Mike       | Utility for filesytem access                                                                                  |
 |             |            |                                                                                                               |
 | mongoext    | Mike       | Utility/Helper functions for mongodb                                                                          |
 | cursortoken | Mike       | MongoDB cursortoken implementation                                                                            |
+| pagination  | Mike       | Pagination implementation                                                                                     |
 |             |            |                                                                                                               |
 | totpext     | Mike       | Implementation of TOTP (2-Factor-Auth)                                                                        |
 | termext     | Mike       | Utilities for terminals (mostly color output)                                                                 |
@@ -39,3 +41,5 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 | rext        | Mike       | Regex Wrapper, wraps regexp with a better interface                                                           |
 | wmo         | Mike       | Mongo Wrapper, wraps mongodb with a better interface                                                          |
 |             |            |                                                                                                               |
+| scn         | Mike       | SimpleCloudNotifier                                                                                           |
+|             |            |                                                                                                               |

TODO.md

@@ -2,12 +2,6 @@
 
  - cronext
 
- - cursortoken
-
- - typed/geenric mongo wrapper
-
- - error package
-
  - rfctime.DateOnly
  - rfctime.HMSTimeOnly
  - rfctime.NanoTimeOnly

_data/mongo.patch

@@ -1,80 +0,0 @@
-diff --git a/mongo/bson/bsoncodec/struct_codec.go b/mongo/bson/bsoncodec/struct_codec.go
---- a/mongo/bson/bsoncodec/struct_codec.go
-+++ b/mongo/bson/bsoncodec/struct_codec.go
-@@ -122,6 +122,10 @@ func (sc *StructCodec) EncodeValue(r EncodeContext, vw bsonrw.ValueWriter, val r
- 	}
- 	var rv reflect.Value
- 	for _, desc := range sd.fl {
-+		if desc.omitAlways {
-+			continue
-+		}
-+
- 		if desc.inline == nil {
- 			rv = val.Field(desc.idx)
- 		} else {
-@@ -400,15 +404,16 @@ type structDescription struct {
- }
- 
- type fieldDescription struct {
--	name      string // BSON key name
--	fieldName string // struct field name
--	idx       int
--	omitEmpty bool
--	minSize   bool
--	truncate  bool
--	inline    []int
--	encoder   ValueEncoder
--	decoder   ValueDecoder
-+	name       string // BSON key name
-+	fieldName  string // struct field name
-+	idx        int
-+	omitEmpty  bool
-+	omitAlways bool
-+	minSize    bool
-+	truncate   bool
-+	inline     []int
-+	encoder    ValueEncoder
-+	decoder    ValueDecoder
- }
- 
- type byIndex []fieldDescription
-@@ -491,6 +496,7 @@ func (sc *StructCodec) describeStruct(r *Registry, t reflect.Type) (*structDescr
- 		}
- 		description.name = stags.Name
- 		description.omitEmpty = stags.OmitEmpty
-+		description.omitAlways = stags.OmitAlways
- 		description.minSize = stags.MinSize
- 		description.truncate = stags.Truncate
- 
-diff --git a/mongo/bson/bsoncodec/struct_tag_parser.go b/mongo/bson/bsoncodec/struct_tag_parser.go
---- a/mongo/bson/bsoncodec/struct_tag_parser.go
-+++ b/mongo/bson/bsoncodec/struct_tag_parser.go
-@@ -52,12 +52,13 @@ func (stpf StructTagParserFunc) ParseStructTags(sf reflect.StructField) (StructT
- //
- // TODO(skriptble): Add tags for undefined as nil and for null as nil.
- type StructTags struct {
--	Name      string
--	OmitEmpty bool
--	MinSize   bool
--	Truncate  bool
--	Inline    bool
--	Skip      bool
-+	Name       string
-+	OmitEmpty  bool
-+	OmitAlways bool
-+	MinSize    bool
-+	Truncate   bool
-+	Inline     bool
-+	Skip       bool
- }
- 
- // DefaultStructTagParser is the StructTagParser used by the StructCodec by default.
-@@ -108,6 +109,8 @@ func parseTags(key string, tag string) (StructTags, error) {
- 		switch str {
- 		case "omitempty":
- 			st.OmitEmpty = true
-+		case "omitalways":
-+			st.OmitAlways = true
- 		case "minsize":
- 			st.MinSize = true
- 		case "truncate":

_data/update-mongo.sh

@@ -1,95 +0,0 @@
-#!/bin/bash
-
-
-    set -o nounset   # disallow usage of unset vars  ( set -u )
-    set -o errexit   # Exit immediately if a pipeline returns non-zero.  ( set -e )
-    set -o errtrace  # Allow the above trap be inherited by all functions in the script.  ( set -E )
-    set -o pipefail  # Return value of a pipeline is the value of the last (rightmost) command to exit with a non-zero status
-    IFS=$'\n\t'      # Set $IFS to only newline and tab.
-
-
-
-dir="/tmp/mongo_repo_$( uuidgen )"
-
-echo ""
-echo "> Clone https://github.dev/mongodb/mongo-go-driver"
-echo ""
-
-git clone "https://github.com/mongodb/mongo-go-driver" "$dir"
-
-pushd "$dir"
-
-git fetch --tags
-
-latestTag="$( git describe --tags `git rev-list --tags --max-count=1` )"
-
-git -c "advice.detachedHead=false" checkout $latestTag
-
-latestSHA="$( git rev-parse HEAD )"
-
-popd
-
-existingTag=$( cat mongoPatchVersion.go | grep -oP "(?<=const MongoCloneTag = \")([A-Za-z0-9.]+)(?=\")" )
-existingSHA=$( cat mongoPatchVersion.go | grep -oP "(?<=const MongoCloneCommit = \")([A-Za-z0-9.]+)(?=\")" )
-
-echo "===================================="
-echo "ID  (online) $latestSHA"
-echo "ID  (local)  $existingSHA"
-echo "Tag (online) $latestTag"
-echo "Tag (local)  $existingTag"
-echo "===================================="
-
-if [[ "$latestTag" == "$existingTag" ]]; then
-  echo "Nothing to do"
-  rm -rf "$dir"
-  exit 0
-fi
-
-echo ""
-echo "> Copy repository"
-echo ""
-
-rm -rf mongo
-cp -r "$dir" "mongo"
-rm -rf "$dir"
-
-echo ""
-echo "> Clean repository"
-echo ""
-
-rm -rf "mongo/.git"
-rm -rf "mongo/.evergreen"
-rm -rf "mongo/cmd"
-rm -rf "mongo/docs"
-rm -rf "mongo/etc"
-rm -rf "mongo/examples"
-rm -rf "mongo/testdata"
-rm -rf "mongo/benchmark"
-rm -rf "mongo/vendor"
-rm -rf "mongo/internal/test"
-rm -rf "mongo/go.mod"
-rm -rf "mongo/go.sum"
-
-echo ""
-echo "> Update mongoPatchVersion.go"
-echo ""
-
-{
-
-  printf "package goext\n"
-  printf "\n"
-  printf "// %s\n" "$( date +"%Y-%m-%d %H:%M:%S%z" )"
-  printf "\n"
-  printf "const MongoCloneTag = \"%s\"\n" "$latestTag"
-  printf "const MongoCloneCommit = \"%s\"\n" "$latestSHA"
-
-} > mongoPatchVersion.go
-
-echo ""
-echo "> Patch mongo"
-echo ""
-
-git apply -v _data/mongo.patch
-
-echo ""
-echo "Done."

_data/version.sh

@@ -21,6 +21,11 @@ if [ "$( git rev-parse --abbrev-ref HEAD )" != "master" ]; then
   exit 1
 fi
 
+echo ""
+echo -n "Insert optional commit message: "
+read commitMessage
+echo ""
+
 git pull --ff
 
 go get -u ./...
@@ -40,6 +45,11 @@ git add --verbose .
 
 msg="v${next_ver}"
 
+if [[ "$commitMessage" != "" ]]; then
+  msg="${msg} ${commitMessage}"
+fi
+
+
 if [ $# -gt 0 ]; then
   msg="$1"
 fi

bfcodegen/csid-generate.go

@@ -0,0 +1,182 @@
+package bfcodegen
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"go/format"
+	"gogs.mikescher.com/BlackForestBytes/goext"
+	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"io"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+type CSIDDef struct {
+	File         string
+	FileRelative string
+	Name         string
+	Prefix       string
+}
+
+var rexCSIDPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
+
+var rexCSIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+string\s*//\s*(@csid:type)\s+\[(?P<prefix>[A-Z0-9]{3})].*$`))
+
+var rexCSIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumCharsetIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
+
+//go:embed csid-generate.template
+var templateCSIDGenerateText string
+
+func GenerateCharsetIDSpecs(sourceDir string, destFile string) error {
+
+	files, err := os.ReadDir(sourceDir)
+	if err != nil {
+		return err
+	}
+
+	oldChecksum := "N/A"
+	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
+		content, err := os.ReadFile(destFile)
+		if err != nil {
+			return err
+		}
+		if m, ok := rexCSIDChecksumConst.MatchFirst(string(content)); ok {
+			oldChecksum = m.GroupByName("cs").Value()
+		}
+	}
+
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return v.Name() != path.Base(destFile) })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return strings.HasSuffix(v.Name(), ".go") })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return !strings.HasSuffix(v.Name(), "_gen.go") })
+	langext.SortBy(files, func(v os.DirEntry) string { return v.Name() })
+
+	newChecksumStr := goext.GoextVersion
+	for _, f := range files {
+		content, err := os.ReadFile(path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+		newChecksumStr += "\n" + f.Name() + "\t" + cryptext.BytesSha256(content)
+	}
+
+	newChecksum := cryptext.BytesSha256([]byte(newChecksumStr))
+
+	if newChecksum != oldChecksum {
+		fmt.Printf("[CSIDGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
+	} else {
+		fmt.Printf("[CSIDGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
+		return nil
+	}
+
+	allIDs := make([]CSIDDef, 0)
+
+	pkgname := ""
+
+	for _, f := range files {
+		fmt.Printf("========= %s =========\n\n", f.Name())
+		fileIDs, pn, err := processCSIDFile(sourceDir, path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("\n")
+
+		allIDs = append(allIDs, fileIDs...)
+
+		if pn != "" {
+			pkgname = pn
+		}
+	}
+
+	if pkgname == "" {
+		return errors.New("no package name found in any file")
+	}
+
+	fdata, err := format.Source([]byte(fmtCSIDOutput(newChecksum, allIDs, pkgname)))
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(destFile, fdata, 0o755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func processCSIDFile(basedir string, fn string) ([]CSIDDef, string, error) {
+	file, err := os.Open(fn)
+	if err != nil {
+		return nil, "", err
+	}
+
+	defer func() { _ = file.Close() }()
+
+	bin, err := io.ReadAll(file)
+	if err != nil {
+		return nil, "", err
+	}
+
+	lines := strings.Split(string(bin), "\n")
+
+	ids := make([]CSIDDef, 0)
+
+	pkgname := ""
+
+	for i, line := range lines {
+		if i == 0 && strings.HasPrefix(line, "// Code generated by") {
+			break
+		}
+
+		if match, ok := rexCSIDPackage.MatchFirst(line); i == 0 && ok {
+			pkgname = match.GroupByName("name").Value()
+			continue
+		}
+
+		if match, ok := rexCSIDDef.MatchFirst(line); ok {
+
+			rfp, err := filepath.Rel(basedir, fn)
+			if err != nil {
+				return nil, "", err
+			}
+
+			def := CSIDDef{
+				File:         fn,
+				FileRelative: rfp,
+				Name:         match.GroupByName("name").Value(),
+				Prefix:       match.GroupByName("prefix").Value(),
+			}
+			fmt.Printf("Found ID definition { '%s' }\n", def.Name)
+			ids = append(ids, def)
+		}
+	}
+
+	return ids, pkgname, nil
+}
+
+func fmtCSIDOutput(cs string, ids []CSIDDef, pkgname string) string {
+	templ := template.Must(template.New("csid-generate").Parse(templateCSIDGenerateText))
+
+	buffer := bytes.Buffer{}
+
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	return buffer.String()
+}

bfcodegen/csid-generate.template

@@ -0,0 +1,190 @@
+// Code generated by csid-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "crypto/rand"
+import "crypto/sha256"
+import "fmt"
+import "github.com/go-playground/validator/v10"
+import "github.com/rs/zerolog/log"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/rext"
+import "math/big"
+import "reflect"
+import "regexp"
+import "strings"
+
+const ChecksumCharsetIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+const idlen = 24
+
+const checklen = 1
+
+const idCharset = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+const idCharsetLen = len(idCharset)
+
+var charSetReverseMap = generateCharsetMap()
+
+const ({{range .IDs}}
+	prefix{{.Name}} = "{{.Prefix}}" {{end}}
+)
+
+var ({{range .IDs}}
+	regex{{.Name}} = generateRegex(prefix{{.Name}}) {{end}}
+)
+
+func generateRegex(prefix string) rext.Regex {
+	return rext.W(regexp.MustCompile(fmt.Sprintf("^%s[%s]{%d}[%s]{%d}$", prefix, idCharset, idlen-len(prefix)-checklen, idCharset, checklen)))
+}
+
+func generateCharsetMap() []int {
+	result := make([]int, 128)
+	for i := 0; i < len(result); i++ {
+		result[i] = -1
+	}
+	for idx, chr := range idCharset {
+		result[int(chr)] = idx
+	}
+	return result
+}
+
+func generateID(prefix string) string {
+	k := ""
+	csMax := big.NewInt(int64(idCharsetLen))
+	checksum := 0
+	for i := 0; i < idlen-len(prefix)-checklen; i++ {
+		v, err := rand.Int(rand.Reader, csMax)
+		if err != nil {
+			panic(err)
+		}
+		v64 := v.Int64()
+		k += string(idCharset[v64])
+		checksum = (checksum + int(v64)) % (idCharsetLen)
+	}
+	checkstr := string(idCharset[checksum%idCharsetLen])
+	return prefix + k + checkstr
+}
+
+func generateIDFromSeed(prefix string, seed string) string {
+	h := sha256.New()
+
+	iddata := ""
+	for len(iddata) < idlen-len(prefix)-checklen {
+		h.Write([]byte(seed))
+		bs := h.Sum(nil)
+		iddata += langext.NewAnyBaseConverter(idCharset).Encode(bs)
+	}
+
+	checksum := 0
+	for i := 0; i < idlen-len(prefix)-checklen; i++ {
+		ichr := int(iddata[i])
+		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)
+	}
+
+	checkstr := string(idCharset[checksum%idCharsetLen])
+
+	return prefix + iddata[:(idlen-len(prefix)-checklen)] + checkstr
+}
+
+func validateID(prefix string, value string) error {
+	if len(value) != idlen {
+		return exerr.New(exerr.TypeInvalidCSID, "id has the wrong length").Str("value", value).Build()
+	}
+
+	if !strings.HasPrefix(value, prefix) {
+		return exerr.New(exerr.TypeInvalidCSID, "id is missing the correct prefix").Str("value", value).Str("prefix", prefix).Build()
+	}
+
+	checksum := 0
+	for i := len(prefix); i < len(value)-checklen; i++ {
+		ichr := int(value[i])
+		if ichr < 0 || ichr >= len(charSetReverseMap) || charSetReverseMap[ichr] == -1 {
+			return exerr.New(exerr.TypeInvalidCSID, "id contains invalid characters").Str("value", value).Build()
+		}
+		checksum = (checksum + charSetReverseMap[ichr]) % (idCharsetLen)
+	}
+
+	checkstr := string(idCharset[checksum%idCharsetLen])
+
+	if !strings.HasSuffix(value, checkstr) {
+		return exerr.New(exerr.TypeInvalidCSID, "id checkstring is invalid").Str("value", value).Str("checkstr", checkstr).Build()
+	}
+
+	return nil
+}
+
+func getRawData(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[len(prefix) : idlen-checklen]
+}
+
+func getCheckString(prefix string, value string) string {
+	if len(value) != idlen {
+		return ""
+	}
+	return value[idlen-checklen:]
+}
+
+func ValidateEntityID(vfl validator.FieldLevel) bool {
+	if !vfl.Field().CanInterface() {
+		log.Error().Msgf("Failed to validate EntityID (cannot interface ?!?)")
+		return false
+	}
+
+	ifvalue := vfl.Field().Interface()
+
+	if value1, ok := ifvalue.(EntityID); ok {
+
+		if vfl.Field().Type().Kind() == reflect.Pointer && langext.IsNil(value1) {
+			return true
+		}
+
+		if err := value1.Valid(); err != nil {
+			log.Debug().Msgf("Failed to validate EntityID '%s' (%s)", value1.String(), err.Error())
+			return false
+		} else {
+			return true
+		}
+
+	} else {
+		log.Error().Msgf("Failed to validate EntityID (wrong type: %T)", ifvalue)
+		return false
+	}
+}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(generateID(prefix{{.Name}}))
+}
+
+func (id {{.Name}}) Valid() error {
+	return validateID(prefix{{.Name}}, string(id))
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) Prefix() string {
+	return prefix{{.Name}}
+}
+
+func (id {{.Name}}) Raw() string {
+	return getRawData(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) CheckString() string {
+	return getCheckString(prefix{{.Name}}, string(id))
+}
+
+func (id {{.Name}}) Regex() rext.Regex {
+	return regex{{.Name}}
+}
+
+{{end}}

bfcodegen/csid-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example_1.tgz
+var CSIDExampleModels1 []byte
+
+func TestGenerateCSIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, CSIDExampleModels1, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/csid_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

bfcodegen/enum-generate.go

@@ -1,10 +1,13 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
+	"encoding/json"
 	"errors"
 	"fmt"
+	"go/format"
 	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
 	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"gogs.mikescher.com/BlackForestBytes/goext/rext"
@@ -12,15 +15,18 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"reflect"
 	"regexp"
 	"strings"
-	"time"
+	"text/template"
 )
 
 type EnumDefVal struct {
 	VarName     string
 	Value       string
 	Description *string
+	Data        *map[string]any
+	RawComment  *string
 }
 
 type EnumDef struct {
@@ -31,41 +37,64 @@ type EnumDef struct {
 	Values       []EnumDefVal
 }
 
-var rexPackage = rext.W(regexp.MustCompile("^package\\s+(?P<name>[A-Za-z0-9_]+)\\s*$"))
+var rexEnumPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
 
-var rexEnumDef = rext.W(regexp.MustCompile("^\\s*type\\s+(?P<name>[A-Za-z0-9_]+)\\s+(?P<type>[A-Za-z0-9_]+)\\s*//\\s*(@enum:type).*$"))
+var rexEnumDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*//\s*(@enum:type).*$`))
 
-var rexValueDef = rext.W(regexp.MustCompile("^\\s*(?P<name>[A-Za-z0-9_]+)\\s+(?P<type>[A-Za-z0-9_]+)\\s*=\\s*(?P<value>(\"[A-Za-z0-9_:]+\"|[0-9]+))\\s*(//(?P<descr>.*))?.*$"))
+var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:\s\-.]+"|[0-9]+))\s*(//(?P<comm>.*))?.*$`))
 
-var rexChecksumConst = rext.W(regexp.MustCompile("const ChecksumGenerator = \"(?P<cs>[A-Za-z0-9_]*)\""))
+var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
+
+//go:embed enum-generate.template
+var templateEnumGenerateText string
 
 func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
-	files, err := os.ReadDir(sourceDir)
-	if err != nil {
-		return err
-	}
-
 	oldChecksum := "N/A"
 	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
 		content, err := os.ReadFile(destFile)
 		if err != nil {
 			return err
 		}
-		if m, ok := rexChecksumConst.MatchFirst(string(content)); ok {
+		if m, ok := rexEnumChecksumConst.MatchFirst(string(content)); ok {
 			oldChecksum = m.GroupByName("cs").Value()
 		}
 	}
 
+	gocode, _, changed, err := _generateEnumSpecs(sourceDir, destFile, oldChecksum, true)
+	if err != nil {
+		return err
+	}
+
+	if !changed {
+		return nil
+	}
+
+	err = os.WriteFile(destFile, []byte(gocode), 0o755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func _generateEnumSpecs(sourceDir string, destFile string, oldChecksum string, gofmt bool) (string, string, bool, error) {
+
+	files, err := os.ReadDir(sourceDir)
+	if err != nil {
+		return "", "", false, err
+	}
+
 	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return v.Name() != path.Base(destFile) })
 	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return strings.HasSuffix(v.Name(), ".go") })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return !strings.HasSuffix(v.Name(), "_gen.go") })
 	langext.SortBy(files, func(v os.DirEntry) string { return v.Name() })
 
 	newChecksumStr := goext.GoextVersion
 	for _, f := range files {
 		content, err := os.ReadFile(path.Join(sourceDir, f.Name()))
 		if err != nil {
-			return err
+			return "", "", false, err
 		}
 		newChecksumStr += "\n" + f.Name() + "\t" + cryptext.BytesSha256(content)
 	}
@@ -76,7 +105,7 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 		fmt.Printf("[EnumGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
 	} else {
 		fmt.Printf("[EnumGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
-		return nil
+		return "", oldChecksum, false, nil
 	}
 
 	allEnums := make([]EnumDef, 0)
@@ -85,9 +114,9 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 
 	for _, f := range files {
 		fmt.Printf("========= %s =========\n\n", f.Name())
-		fileEnums, pn, err := processFile(sourceDir, path.Join(sourceDir, f.Name()))
+		fileEnums, pn, err := processEnumFile(sourceDir, path.Join(sourceDir, f.Name()))
 		if err != nil {
-			return err
+			return "", "", false, err
 		}
 
 		fmt.Printf("\n")
@@ -100,32 +129,24 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 	}
 
 	if pkgname == "" {
-		return errors.New("no package name found in any file")
+		return "", "", false, errors.New("no package name found in any file")
 	}
 
-	err = os.WriteFile(destFile, []byte(fmtOutput(newChecksum, allEnums, pkgname)), 0o755)
+	rdata := fmtEnumOutput(newChecksum, allEnums, pkgname)
+
+	if !gofmt {
+		return rdata, newChecksum, true, nil
+	}
+
+	fdata, err := format.Source([]byte(rdata))
 	if err != nil {
-		return err
+		return "", "", false, err
 	}
 
-	res, err := cmdext.RunCommand("go", []string{"fmt", destFile}, langext.Ptr(2*time.Second))
+	return string(fdata), newChecksum, true, nil
-	if err != nil {
-		return err
 }
 
-	if res.CommandTimedOut {
+func processEnumFile(basedir string, fn string) ([]EnumDef, string, error) {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt timed out")
-	}
-	if res.ExitCode != 0 {
-		fmt.Println(res.StdCombined)
-		return errors.New("go fmt did not succeed")
-	}
-
-	return nil
-}
-
-func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 	file, err := os.Open(fn)
 	if err != nil {
 		return nil, "", err
@@ -149,7 +170,7 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 			break
 		}
 
-		if match, ok := rexPackage.MatchFirst(line); i == 0 && ok {
+		if match, ok := rexEnumPackage.MatchFirst(line); i == 0 && ok {
 			pkgname = match.GroupByName("name").Value()
 			continue
 		}
@@ -172,12 +193,36 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 			fmt.Printf("Found enum definition { '%s' -> '%s' }\n", def.EnumTypeName, def.Type)
 		}
 
-		if match, ok := rexValueDef.MatchFirst(line); ok {
+		if match, ok := rexEnumValueDef.MatchFirst(line); ok {
 			typename := match.GroupByName("type").Value()
+
+			comment := match.GroupByNameOrEmpty("comm").ValueOrNil()
+			var descr *string = nil
+			var data *map[string]any = nil
+			if comment != nil {
+				comment = langext.Ptr(strings.TrimSpace(*comment))
+				if strings.HasPrefix(*comment, "{") {
+					if v, ok := tryParseDataComment(*comment); ok {
+						data = &v
+						if anyDataDescr, ok := v["description"]; ok {
+							if dataDescr, ok := anyDataDescr.(string); ok {
+								descr = &dataDescr
+							}
+						}
+					} else {
+						descr = comment
+					}
+				} else {
+					descr = comment
+				}
+			}
+
 			def := EnumDefVal{
 				VarName:     match.GroupByName("name").Value(),
 				Value:       match.GroupByName("value").Value(),
-				Description: match.GroupByNameOrEmpty("descr").ValueOrNil(),
+				RawComment:  comment,
+				Description: descr,
+				Data:        data,
 			}
 
 			found := false
@@ -202,163 +247,109 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 	return enums, pkgname, nil
 }
 
-func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
+func tryParseDataComment(s string) (map[string]any, bool) {
-	str := "// Code generated by enum-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
 
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/langext\"" + "\n"
+	r := make(map[string]any)
-	str += "\n"
 
-	str += "const ChecksumGenerator = \"" + cs + "\"" + "\n"
+	err := json.Unmarshal([]byte(s), &r)
-	str += "\n"
+	if err != nil {
-
+		return nil, false
-	str += "type Enum interface {" + "\n"
-	str += "    Valid() bool" + "\n"
-	str += "    ValuesAny() []any" + "\n"
-	str += "    ValuesMeta() []EnumMetaValue" + "\n"
-	str += "    VarName() string" + "\n"
-	str += "}" + "\n"
-	str += "" + "\n"
-
-	str += "type StringEnum interface {" + "\n"
-	str += "    Enum" + "\n"
-	str += "    String() string" + "\n"
-	str += "}" + "\n"
-	str += "" + "\n"
-
-	str += "type DescriptionEnum interface {" + "\n"
-	str += "    Enum" + "\n"
-	str += "    Description() string" + "\n"
-	str += "}" + "\n"
-	str += "\n"
-
-	str += "type EnumMetaValue struct {" + "\n"
-	str += "    VarName     string  `json:\"varName\"`" + "\n"
-	str += "    Value       any     `json:\"value\"`" + "\n"
-	str += "    Description *string `json:\"description\"`" + "\n"
-	str += "}" + "\n"
-	str += "\n"
-
-	for _, enumdef := range enums {
-
-		hasDescr := langext.ArrAll(enumdef.Values, func(val EnumDefVal) bool { return val.Description != nil })
-		hasStr := enumdef.Type == "string"
-
-		str += "// ================================ " + enumdef.EnumTypeName + " ================================" + "\n"
-		str += "//" + "\n"
-		str += "// File:       " + enumdef.FileRelative + "\n"
-		str += "// StringEnum: " + langext.Conditional(hasStr, "true", "false") + "\n"
-		str += "// DescrEnum:  " + langext.Conditional(hasDescr, "true", "false") + "\n"
-		str += "//" + "\n"
-		str += "" + "\n"
-
-		str += "var __" + enumdef.EnumTypeName + "Values = []" + enumdef.EnumTypeName + "{" + "\n"
-		for _, v := range enumdef.Values {
-			str += "    " + v.VarName + "," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasDescr {
-			str += "var __" + enumdef.EnumTypeName + "Descriptions = map[" + enumdef.EnumTypeName + "]string{" + "\n"
-			for _, v := range enumdef.Values {
-				str += "    " + v.VarName + ": \"" + strings.TrimSpace(*v.Description) + "\"," + "\n"
-			}
-			str += "}" + "\n"
-			str += "" + "\n"
 	}
 
-		str += "var __" + enumdef.EnumTypeName + "Varnames = map[" + enumdef.EnumTypeName + "]string{" + "\n"
+	for _, v := range r {
-		for _, v := range enumdef.Values {
+
-			str += "    " + v.VarName + ": \"" + v.VarName + "\"," + "\n"
+		rv := reflect.ValueOf(v)
+
+		if rv.Kind() == reflect.Ptr && rv.IsNil() {
+			continue
+		}
+		if rv.Kind() == reflect.Bool {
+			continue
+		}
+		if rv.Kind() == reflect.String {
+			continue
+		}
+		if rv.Kind() == reflect.Int64 {
+			continue
+		}
+		if rv.Kind() == reflect.Float64 {
+			continue
 		}
-		str += "}" + "\n"
-		str += "" + "\n"
 
-		str += "func (e " + enumdef.EnumTypeName + ") Valid() bool {" + "\n"
+		return nil, false
-		str += "    return langext.InArray(e, __" + enumdef.EnumTypeName + "Values)" + "\n"
+	}
-		str += "}" + "\n"
-		str += "" + "\n"
 
-		str += "func (e " + enumdef.EnumTypeName + ") Values() []" + enumdef.EnumTypeName + " {" + "\n"
+	return r, true
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
+}
-		str += "}" + "\n"
-		str += "" + "\n"
 
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesAny() []any {" + "\n"
+func fmtEnumOutput(cs string, enums []EnumDef, pkgname string) string {
-		str += "    return langext.ArrCastToAny(__" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
 
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []EnumMetaValue {" + "\n"
+	templ := template.New("enum-generate")
-		str += "    return []EnumMetaValue{" + "\n"
+
-		for _, v := range enumdef.Values {
+	templ = templ.Funcs(template.FuncMap{
-			if hasDescr {
+		"boolToStr": func(b bool) string { return langext.Conditional(b, "true", "false") },
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: langext.Ptr(\"%s\")},", v.VarName, v.VarName, strings.TrimSpace(*v.Description)) + "\n"
+		"deref":     func(v *string) string { return *v },
+		"trimSpace": func(str string) string { return strings.TrimSpace(str) },
+		"hasStr":    func(v EnumDef) bool { return v.Type == "string" },
+		"hasDescr": func(v EnumDef) bool {
+			return langext.ArrAll(v.Values, func(val EnumDefVal) bool { return val.Description != nil })
+		},
+		"hasData": func(v EnumDef) bool {
+			return len(v.Values) > 0 && langext.ArrAll(v.Values, func(val EnumDefVal) bool { return val.Data != nil })
+		},
+		"gostr": func(v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"goobj": func(name string, v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"godatakey": func(v string) string {
+			return strings.ToUpper(v[0:1]) + v[1:]
+		},
+		"godatavalue": func(v any) string {
+			return fmt.Sprintf("%#+v", v)
+		},
+		"godatatype": func(v any) string {
+			return fmt.Sprintf("%T", v)
+		},
+		"mapindex": func(v map[string]any, k string) any {
+			return v[k]
+		},
+		"generalDataKeys": func(v EnumDef) map[string]string {
+			r0 := make(map[string]int)
+
+			for _, eval := range v.Values {
+				for k := range *eval.Data {
+					if ctr, ok := r0[k]; ok {
+						r0[k] = ctr + 1
 					} else {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: nil},", v.VarName, v.VarName) + "\n"
+						r0[k] = 1
 					}
 				}
-		str += "    }" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		if hasStr {
-			str += "func (e " + enumdef.EnumTypeName + ") String() string {" + "\n"
-			str += "    return string(e)" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
 			}
 
-		if hasDescr {
+			r1 := langext.MapToArr(r0)
-			str += "func (e " + enumdef.EnumTypeName + ") Description() string {" + "\n"
+			r2 := langext.ArrFilter(r1, func(p langext.MapEntry[string, int]) bool { return p.Value == len(v.Values) })
-			str += "    if d, ok := __" + enumdef.EnumTypeName + "Descriptions[e]; ok {" + "\n"
+			r3 := langext.ArrMap(r2, func(p langext.MapEntry[string, int]) string { return p.Key })
-			str += "        return d" + "\n"
+			r4 := langext.ArrToKVMap(r3, func(p string) string { return p }, func(p string) string { return fmt.Sprintf("%T", (*v.Values[0].Data)[p]) })
-			str += "    }" + "\n"
+
-			str += "    return \"\"" + "\n"
+			return r4
-			str += "}" + "\n"
+		},
-			str += "" + "\n"
+	})
+
+	templ = template.Must(templ.Parse(templateEnumGenerateText))
+
+	buffer := bytes.Buffer{}
+
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"Enums":        enums,
+	})
+	if err != nil {
+		panic(err)
 	}
 
-		str += "func (e " + enumdef.EnumTypeName + ") VarName() string {" + "\n"
+	return buffer.String()
-		str += "    if d, ok := __" + enumdef.EnumTypeName + "Varnames[e]; ok {" + "\n"
-		str += "        return d" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\"" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func Parse" + enumdef.EnumTypeName + "(vv string) (" + enumdef.EnumTypeName + ", bool) {" + "\n"
-		str += "    for _, ev := range __" + enumdef.EnumTypeName + "Values {" + "\n"
-		str += "        if string(ev) == vv {" + "\n"
-		str += "            return ev, true" + "\n"
-		str += "        }" + "\n"
-		str += "    }" + "\n"
-		str += "    return \"\", false" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func " + enumdef.EnumTypeName + "ValuesMeta() []EnumMetaValue {" + "\n"
-		str += "    return []EnumMetaValue{" + "\n"
-		for _, v := range enumdef.Values {
-			if hasDescr {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: langext.Ptr(\"%s\")},", v.VarName, v.VarName, strings.TrimSpace(*v.Description)) + "\n"
-			} else {
-				str += "        " + fmt.Sprintf("EnumMetaValue{VarName: \"%s\", Value: %s, Description: nil},", v.VarName, v.VarName) + "\n"
-			}
-		}
-		str += "    }" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-	}
-
-	return str
 }

bfcodegen/enum-generate.template

@@ -0,0 +1,137 @@
+// Code generated by enum-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "gogs.mikescher.com/BlackForestBytes/goext/langext"
+import "gogs.mikescher.com/BlackForestBytes/goext/enums"
+
+const ChecksumEnumGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .Enums}}
+
+{{ $hasStr   := ( . | hasStr   ) }}
+{{ $hasDescr := ( . | hasDescr ) }}
+{{ $hasData  := ( . | hasData  ) }}
+
+// ================================ {{.EnumTypeName}} ================================
+//
+// File:       {{.FileRelative}}
+// StringEnum: {{$hasStr   | boolToStr}}
+// DescrEnum:  {{$hasDescr | boolToStr}}
+// DataEnum:   {{$hasData  | boolToStr}}
+//
+
+{{ $typename := .EnumTypeName }}
+{{ $enumdef  := . }}
+
+var __{{.EnumTypeName}}Values = []{{.EnumTypeName}}{ {{range .Values}}
+	{{.VarName}}, {{end}}
+}
+
+{{if $hasDescr}}
+var __{{.EnumTypeName}}Descriptions = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: {{.Description | deref | trimSpace | gostr}}, {{end}}
+}
+{{end}}
+
+{{if $hasData}}
+type {{ .EnumTypeName }}Data struct { {{ range $datakey, $datatype := ($enumdef | generalDataKeys)  }}
+    {{ $datakey | godatakey }} {{ $datatype }} `json:"{{ $datakey }}"` {{ end }}
+}
+
+var __{{.EnumTypeName}}Data = map[{{.EnumTypeName}}]{{.EnumTypeName}}Data{ {{range .Values}} {{ $enumvalue := . }}
+	{{.VarName}}: {{ $typename }}Data{ {{ range $datakey, $datatype := $enumdef | generalDataKeys  }}
+	    {{ $datakey | godatakey }}: {{ (mapindex $enumvalue.Data $datakey) | godatavalue }}, {{ end }}
+	}, {{end}}
+}
+{{end}}
+
+var __{{.EnumTypeName}}Varnames = map[{{.EnumTypeName}}]string{ {{range .Values}}
+	{{.VarName}}: "{{.VarName}}", {{end}}
+}
+
+func (e {{.EnumTypeName}}) Valid() bool {
+	return langext.InArray(e, __{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func (e {{.EnumTypeName}}) ValuesAny() []any {
+	return langext.ArrCastToAny(__{{.EnumTypeName}}Values)
+}
+
+func (e {{.EnumTypeName}}) ValuesMeta() []enums.EnumMetaValue {
+	return {{.EnumTypeName}}ValuesMeta()
+}
+
+{{if $hasStr}}
+func (e {{.EnumTypeName}}) String() string {
+	return string(e)
+}
+{{end}}
+
+{{if $hasDescr}}
+func (e {{.EnumTypeName}}) Description() string {
+	if d, ok := __{{.EnumTypeName}}Descriptions[e]; ok {
+		return d
+	}
+	return ""
+}
+{{end}}
+
+{{if $hasData}}
+func (e {{.EnumTypeName}}) Data() {{.EnumTypeName}}Data {
+	if d, ok := __{{.EnumTypeName}}Data[e]; ok {
+		return d
+	}
+	return {{.EnumTypeName}}Data{}
+}
+{{end}}
+
+func (e {{.EnumTypeName}}) VarName() string {
+	if d, ok := __{{.EnumTypeName}}Varnames[e]; ok {
+		return d
+	}
+	return ""
+}
+
+func (e {{.EnumTypeName}}) Meta() enums.EnumMetaValue {
+    {{if $hasDescr}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())} {{else}} return enums.EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil} {{end}}
+}
+
+{{if $hasDescr}}
+func (e {{.EnumTypeName}}) DescriptionMeta() enums.EnumDescriptionMetaValue {
+    return enums.EnumDescriptionMetaValue{VarName: e.VarName(), Value: e, Description: e.Description()}
+}
+{{end}}
+
+func Parse{{.EnumTypeName}}(vv string) ({{.EnumTypeName}}, bool) {
+	for _, ev := range __{{.EnumTypeName}}Values {
+		if string(ev) == vv {
+			return ev, true
+		}
+	}
+	return "", false
+}
+
+func {{.EnumTypeName}}Values() []{{.EnumTypeName}} {
+	return __{{.EnumTypeName}}Values
+}
+
+func {{.EnumTypeName}}ValuesMeta() []enums.EnumMetaValue {
+	return []enums.EnumMetaValue{ {{range .Values}}
+            {{.VarName}}.Meta(), {{end}}
+	}
+}
+
+{{if $hasDescr}}
+func {{.EnumTypeName}}ValuesDescriptionMeta() []enums.EnumDescriptionMetaValue {
+	return []enums.EnumDescriptionMetaValue{ {{range .Values}}
+            {{.VarName}}.DescriptionMeta(), {{end}}
+	}
+}
+{{end}}
+
+{{end}}

bfcodegen/enum-generate_test.go

@@ -1,15 +1,91 @@
 package bfcodegen
 
 import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
 	"testing"
+	"time"
 )
 
-func TestApplyEnvOverridesSimple(t *testing.T) {
+//go:embed _test_example_1.tgz
+var EnumExampleModels1 []byte
 
-	err := GenerateEnumSpecs("/home/mike/Code/reiff/badennet/bnet-backend/models", "/home/mike/Code/reiff/badennet/bnet-backend/models/enums_gen.go")
+//go:embed _test_example_2.tgz
-	if err != nil {
+var EnumExampleModels2 []byte
-		t.Error(err)
+
-		t.Fail()
+func TestGenerateEnumSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, EnumExampleModels1, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	s1, cs1, _, err := _generateEnumSpecs(tmpDir, "", "N/A", true)
+	tst.AssertNoErr(t, err)
+
+	s2, cs2, _, err := _generateEnumSpecs(tmpDir, "", "N/A", true)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertEqual(t, cs1, cs2)
+	tst.AssertEqual(t, s1, s2)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(s1)
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
 }
 
+func TestGenerateEnumSpecsData(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, EnumExampleModels2, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	s1, _, _, err := _generateEnumSpecs(tmpDir, "", "", true)
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(s1)
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
 }

bfcodegen/id-generate.go

@@ -0,0 +1,183 @@
+package bfcodegen
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"go/format"
+	"gogs.mikescher.com/BlackForestBytes/goext"
+	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"io"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+type IDDef struct {
+	File         string
+	FileRelative string
+	Name         string
+}
+
+var rexIDPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
+
+var rexIDDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+string\s*//\s*(@id:type).*$`))
+
+var rexIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumIDGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
+
+//go:embed id-generate.template
+var templateIDGenerateText string
+
+func GenerateIDSpecs(sourceDir string, destFile string) error {
+
+	files, err := os.ReadDir(sourceDir)
+	if err != nil {
+		return err
+	}
+
+	oldChecksum := "N/A"
+	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
+		content, err := os.ReadFile(destFile)
+		if err != nil {
+			return err
+		}
+		if m, ok := rexIDChecksumConst.MatchFirst(string(content)); ok {
+			oldChecksum = m.GroupByName("cs").Value()
+		}
+	}
+
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return v.Name() != path.Base(destFile) })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return strings.HasSuffix(v.Name(), ".go") })
+	files = langext.ArrFilter(files, func(v os.DirEntry) bool { return !strings.HasSuffix(v.Name(), "_gen.go") })
+	langext.SortBy(files, func(v os.DirEntry) string { return v.Name() })
+
+	newChecksumStr := goext.GoextVersion
+	for _, f := range files {
+		content, err := os.ReadFile(path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+		newChecksumStr += "\n" + f.Name() + "\t" + cryptext.BytesSha256(content)
+	}
+
+	newChecksum := cryptext.BytesSha256([]byte(newChecksumStr))
+
+	if newChecksum != oldChecksum {
+		fmt.Printf("[IDGenerate] Checksum has changed ( %s -> %s ), will generate new file\n\n", oldChecksum, newChecksum)
+	} else {
+		fmt.Printf("[IDGenerate] Checksum unchanged ( %s ), nothing to do\n", oldChecksum)
+		return nil
+	}
+
+	allIDs := make([]IDDef, 0)
+
+	pkgname := ""
+
+	for _, f := range files {
+		fmt.Printf("========= %s =========\n\n", f.Name())
+		fileIDs, pn, err := processIDFile(sourceDir, path.Join(sourceDir, f.Name()))
+		if err != nil {
+			return err
+		}
+
+		fmt.Printf("\n")
+
+		allIDs = append(allIDs, fileIDs...)
+
+		if pn != "" {
+			pkgname = pn
+		}
+	}
+
+	if pkgname == "" {
+		return errors.New("no package name found in any file")
+	}
+
+	fdata, err := format.Source([]byte(fmtIDOutput(newChecksum, allIDs, pkgname)))
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(destFile, fdata, 0o755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func processIDFile(basedir string, fn string) ([]IDDef, string, error) {
+	file, err := os.Open(fn)
+	if err != nil {
+		return nil, "", err
+	}
+
+	defer func() { _ = file.Close() }()
+
+	bin, err := io.ReadAll(file)
+	if err != nil {
+		return nil, "", err
+	}
+
+	lines := strings.Split(string(bin), "\n")
+
+	ids := make([]IDDef, 0)
+
+	pkgname := ""
+
+	for i, line := range lines {
+		if i == 0 && strings.HasPrefix(line, "// Code generated by") {
+			break
+		}
+
+		if match, ok := rexIDPackage.MatchFirst(line); i == 0 && ok {
+			pkgname = match.GroupByName("name").Value()
+			continue
+		}
+
+		if match, ok := rexIDDef.MatchFirst(line); ok {
+
+			rfp, err := filepath.Rel(basedir, fn)
+			if err != nil {
+				return nil, "", err
+			}
+
+			def := IDDef{
+				File:         fn,
+				FileRelative: rfp,
+				Name:         match.GroupByName("name").Value(),
+			}
+			fmt.Printf("Found ID definition { '%s' }\n", def.Name)
+			ids = append(ids, def)
+		}
+	}
+
+	return ids, pkgname, nil
+}
+
+func fmtIDOutput(cs string, ids []IDDef, pkgname string) string {
+	templ := template.Must(template.New("id-generate").Parse(templateIDGenerateText))
+
+	buffer := bytes.Buffer{}
+
+	anyDef := langext.ArrFirstOrNil(ids, func(def IDDef) bool { return def.Name == "AnyID" || def.Name == "AnyId" })
+
+	err := templ.Execute(&buffer, langext.H{
+		"PkgName":      pkgname,
+		"Checksum":     cs,
+		"GoextVersion": goext.GoextVersion,
+		"IDs":          ids,
+		"AnyDef":       anyDef,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	return buffer.String()
+}

bfcodegen/id-generate.template

@@ -0,0 +1,47 @@
+// Code generated by id-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "go.mongodb.org/mongo-driver/bson"
+import "go.mongodb.org/mongo-driver/bson/bsontype"
+import "go.mongodb.org/mongo-driver/bson/primitive"
+import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+
+const ChecksumIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{range .IDs}}
+
+// ================================ {{.Name}} ({{.FileRelative}}) ================================
+
+func (i {{.Name}}) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	if objId, err := primitive.ObjectIDFromHex(string(i)); err == nil {
+		return bson.MarshalValue(objId)
+	} else {
+		return 0, nil, exerr.New(exerr.TypeMarshalEntityID, "Failed to marshal {{.Name}}("+i.String()+") to ObjectId").Str("value", string(i)).Type("type", i).Build()
+	}
+}
+
+func (i {{.Name}}) String() string {
+	return string(i)
+}
+
+func (i {{.Name}}) ObjID() (primitive.ObjectID, error) {
+	return primitive.ObjectIDFromHex(string(i))
+}
+
+func (i {{.Name}}) Valid() bool {
+	_, err := primitive.ObjectIDFromHex(string(i))
+	return err == nil
+}
+
+{{if ne $.AnyDef nil}}
+func (i {{.Name}}) AsAny() {{$.AnyDef.Name}} {
+	return {{$.AnyDef.Name}}(i)
+}
+{{end}}
+
+func New{{.Name}}() {{.Name}} {
+	return {{.Name}}(primitive.NewObjectID().Hex())
+}
+
+{{end}}

bfcodegen/id-generate_test.go

@@ -0,0 +1,52 @@
+package bfcodegen
+
+import (
+	_ "embed"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+//go:embed _test_example_1.tgz
+var IDExampleModels1 []byte
+
+func TestGenerateIDSpecs(t *testing.T) {
+
+	tmpFile := filepath.Join(t.TempDir(), langext.MustHexUUID()+".tgz")
+
+	tmpDir := filepath.Join(t.TempDir(), langext.MustHexUUID())
+
+	err := os.WriteFile(tmpFile, IDExampleModels1, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.Remove(tmpFile) })
+
+	err = os.Mkdir(tmpDir, 0o777)
+	tst.AssertNoErr(t, err)
+
+	t.Cleanup(func() { _ = os.RemoveAll(tmpFile) })
+
+	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go")
+	tst.AssertNoErr(t, err)
+
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+	fmt.Println("=====================================================================================================")
+	fmt.Println(string(tst.Must(os.ReadFile(tmpDir + "/id_gen.go"))(t)))
+	fmt.Println("=====================================================================================================")
+	fmt.Println()
+	fmt.Println()
+	fmt.Println()
+}

cmdext/builder.go

@@ -14,6 +14,7 @@ type CommandRunner struct {
 	listener         []CommandListener
 	enforceExitCodes *[]int
 	enforceNoTimeout bool
+	enforceNoStderr  bool
 }
 
 func Runner(program string) *CommandRunner {
@@ -25,6 +26,7 @@ func Runner(program string) *CommandRunner {
 		listener:         make([]CommandListener, 0),
 		enforceExitCodes: nil,
 		enforceNoTimeout: false,
+		enforceNoStderr:  false,
 	}
 }
 
@@ -73,6 +75,11 @@ func (r *CommandRunner) FailOnTimeout() *CommandRunner {
 	return r
 }
 
+func (r *CommandRunner) FailOnStderr() *CommandRunner {
+	r.enforceNoStderr = true
+	return r
+}
+
 func (r *CommandRunner) Listen(lstr CommandListener) *CommandRunner {
 	r.listener = append(r.listener, lstr)
 	return r

cmdext/cmdrunner.go

@@ -11,6 +11,7 @@ import (
 
 var ErrExitCode = errors.New("process exited with an unexpected exitcode")
 var ErrTimeout = errors.New("process did not exit after the specified timeout")
+var ErrStderrPrint = errors.New("process did print to stderr stream")
 
 type CommandResult struct {
 	StdOut          string
@@ -53,12 +54,27 @@ func run(opt CommandRunner) (CommandResult, error) {
 		err         error
 	}
 
+	stderrFailChan := make(chan bool)
+
 	outputChan := make(chan resultObj)
 	go func() {
 		// we need to first fully read the pipes and then call Wait
 		// see https://pkg.go.dev/os/exec#Cmd.StdoutPipe
 
-		stdout, stderr, stdcombined, err := preader.Read(opt.listener)
+		listener := make([]CommandListener, 0)
+		listener = append(listener, opt.listener...)
+
+		if opt.enforceNoStderr {
+			listener = append(listener, genericCommandListener{
+				_readRawStderr: langext.Ptr(func(v []byte) {
+					if len(v) > 0 {
+						stderrFailChan <- true
+					}
+				}),
+			})
+		}
+
+		stdout, stderr, stdcombined, err := preader.Read(listener)
 		if err != nil {
 			outputChan <- resultObj{stdout, stderr, stdcombined, err}
 			_ = cmd.Process.Kill()
@@ -115,8 +131,34 @@ func run(opt CommandRunner) (CommandResult, error) {
 			return res, nil
 		}
 
+	case <-stderrFailChan:
+		_ = cmd.Process.Kill()
+
+		if fallback, ok := syncext.ReadChannelWithTimeout(outputChan, 32*time.Millisecond); ok {
+			// most of the time the cmd.Process.Kill() should also have finished the pipereader
+			// and we can at least return the already collected stdout, stderr, etc
+			res := CommandResult{
+				StdOut:          fallback.stdout,
+				StdErr:          fallback.stderr,
+				StdCombined:     fallback.stdcombined,
+				ExitCode:        -1,
+				CommandTimedOut: false,
+			}
+			return res, ErrStderrPrint
+		} else {
+			res := CommandResult{
+				StdOut:          "",
+				StdErr:          "",
+				StdCombined:     "",
+				ExitCode:        -1,
+				CommandTimedOut: false,
+			}
+			return res, ErrStderrPrint
+		}
+
 	case outobj := <-outputChan:
-		if exiterr, ok := outobj.err.(*exec.ExitError); ok {
+		var exiterr *exec.ExitError
+		if errors.As(outobj.err, &exiterr) {
 			excode := exiterr.ExitCode()
 			for _, lstr := range opt.listener {
 				lstr.Finished(excode)

cmdext/cmdrunner_test.go

@@ -1,6 +1,7 @@
 package cmdext
 
 import (
+	"errors"
 	"fmt"
 	"testing"
 	"time"
@@ -32,7 +33,7 @@ func TestStdout(t *testing.T) {
 
 func TestStderr(t *testing.T) {
 
-	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"error\", file=sys.stderr, end='')").Run()
+	res1, err := Runner("python3").Arg("-c").Arg("import sys; print(\"error\", file=sys.stderr, end='')").Run()
 	if err != nil {
 		t.Errorf("%v", err)
 	}
@@ -55,7 +56,7 @@ func TestStderr(t *testing.T) {
 }
 
 func TestStdcombined(t *testing.T) {
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"1\", file=sys.stderr, flush=True); time.sleep(0.1); print(\"2\", file=sys.stdout, flush=True); time.sleep(0.1); print(\"3\", file=sys.stderr, flush=True)").
 		Run()
@@ -81,7 +82,7 @@ func TestStdcombined(t *testing.T) {
 }
 
 func TestPartialRead(t *testing.T) {
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"first message\", flush=True); time.sleep(5); print(\"cant see me\", flush=True);").
 		Timeout(100 * time.Millisecond).
@@ -105,7 +106,7 @@ func TestPartialRead(t *testing.T) {
 }
 
 func TestPartialReadStderr(t *testing.T) {
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"first message\", file=sys.stderr, flush=True); time.sleep(5); print(\"cant see me\", file=sys.stderr, flush=True);").
 		Timeout(100 * time.Millisecond).
@@ -130,7 +131,7 @@ func TestPartialReadStderr(t *testing.T) {
 
 func TestReadUnflushedStdout(t *testing.T) {
 
-	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stdout, end='')").Run()
+	res1, err := Runner("python3").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stdout, end='')").Run()
 	if err != nil {
 		t.Errorf("%v", err)
 	}
@@ -154,7 +155,7 @@ func TestReadUnflushedStdout(t *testing.T) {
 
 func TestReadUnflushedStderr(t *testing.T) {
 
-	res1, err := Runner("python").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stderr, end='')").Run()
+	res1, err := Runner("python3").Arg("-c").Arg("import sys; print(\"message101\", file=sys.stderr, end='')").Run()
 	if err != nil {
 		t.Errorf("%v", err)
 	}
@@ -179,7 +180,7 @@ func TestReadUnflushedStderr(t *testing.T) {
 func TestPartialReadUnflushed(t *testing.T) {
 	t.SkipNow()
 
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"first message\", end=''); time.sleep(5); print(\"cant see me\", end='');").
 		Timeout(100 * time.Millisecond).
@@ -205,7 +206,7 @@ func TestPartialReadUnflushed(t *testing.T) {
 func TestPartialReadUnflushedStderr(t *testing.T) {
 	t.SkipNow()
 
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"first message\", file=sys.stderr, end=''); time.sleep(5); print(\"cant see me\", file=sys.stderr, end='');").
 		Timeout(100 * time.Millisecond).
@@ -230,7 +231,7 @@ func TestPartialReadUnflushedStderr(t *testing.T) {
 
 func TestListener(t *testing.T) {
 
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys;" +
 			"import time;" +
@@ -263,7 +264,7 @@ func TestListener(t *testing.T) {
 
 func TestLongStdout(t *testing.T) {
 
-	res1, err := Runner("python").
+	res1, err := Runner("python3").
 		Arg("-c").
 		Arg("import sys; import time; print(\"X\" * 125001 + \"\\n\"); print(\"Y\" * 125001 + \"\\n\"); print(\"Z\" * 125001 + \"\\n\");").
 		Timeout(5000 * time.Millisecond).
@@ -289,16 +290,40 @@ func TestLongStdout(t *testing.T) {
 func TestFailOnTimeout(t *testing.T) {
 
 	_, err := Runner("sleep").Arg("2").Timeout(200 * time.Millisecond).FailOnTimeout().Run()
-	if err != ErrTimeout {
+	if !errors.Is(err, ErrTimeout) {
 		t.Errorf("wrong err := %v", err)
 	}
 
 }
 
+func TestFailOnStderr(t *testing.T) {
+
+	res1, err := Runner("python3").Arg("-c").Arg("import sys; print(\"error\", file=sys.stderr, end='')").FailOnStderr().Run()
+	if err == nil {
+		t.Errorf("no err")
+	}
+	if res1.CommandTimedOut {
+		t.Errorf("Timeout")
+	}
+	if res1.ExitCode != -1 {
+		t.Errorf("res1.ExitCode == %v", res1.ExitCode)
+	}
+	if res1.StdErr != "error" {
+		t.Errorf("res1.StdErr == '%v'", res1.StdErr)
+	}
+	if res1.StdOut != "" {
+		t.Errorf("res1.StdOut == '%v'", res1.StdOut)
+	}
+	if res1.StdCombined != "error\n" {
+		t.Errorf("res1.StdCombined == '%v'", res1.StdCombined)
+	}
+
+}
+
 func TestFailOnExitcode(t *testing.T) {
 
 	_, err := Runner("false").Timeout(200 * time.Millisecond).FailOnExitCode().Run()
-	if err != ErrExitCode {
+	if !errors.Is(err, ErrExitCode) {
 		t.Errorf("wrong err := %v", err)
 	}
 

cmdext/pipereader.go

@@ -32,8 +32,8 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	stdout := ""
 	go func() {
 		buf := make([]byte, 128)
-		for true {
+		for {
-			n, out := pr.stdout.Read(buf)
+			n, err := pr.stdout.Read(buf)
 			if n > 0 {
 				txt := string(buf[:n])
 				stdout += txt
@@ -42,11 +42,11 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 					lstr.ReadRawStdout(buf[:n])
 				}
 			}
-			if out == io.EOF {
+			if err == io.EOF {
 				break
 			}
-			if out != nil {
+			if err != nil {
-				errch <- out
+				errch <- err
 				break
 			}
 		}
@@ -61,7 +61,7 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	stderr := ""
 	go func() {
 		buf := make([]byte, 128)
-		for true {
+		for {
 			n, err := pr.stderr.Read(buf)
 
 			if n > 0 {

confext/confParser.go

@@ -41,13 +41,13 @@ func processEnvOverrides(rval reflect.Value, delim string, prefix string) error
 			continue
 		}
 
-		if rvfield.Kind() == reflect.Struct {
-
 		envkey, found := rsfield.Tag.Lookup("env")
 		if !found || envkey == "-" {
 			continue
 		}
 
+		if rvfield.Kind() == reflect.Struct && rvfield.Type() != reflect.TypeOf(time.UnixMilli(0)) {
+
 			subPrefix := prefix
 			if envkey != "" {
 				subPrefix = subPrefix + envkey + delim
@@ -57,10 +57,7 @@ func processEnvOverrides(rval reflect.Value, delim string, prefix string) error
 			if err != nil {
 				return err
 			}
-		}
 
-		envkey := rsfield.Tag.Get("env")
-		if envkey == "" || envkey == "-" {
 			continue
 		}
 

cryptext/passHash.go

@@ -3,6 +3,7 @@ package cryptext
 import (
 	"crypto/rand"
 	"crypto/sha256"
+	"crypto/sha512"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
@@ -14,14 +15,15 @@ import (
 	"strings"
 )
 
-const LatestPassHashVersion = 4
+const LatestPassHashVersion = 5
 
 // PassHash
-// - [v0]: plaintext password ( `0|...` )
+// - [v0]: plaintext password ( `0|...` )                  // simple, used to write PW's directly in DB
-// - [v1]: sha256(plaintext)
+// - [v1]: sha256(plaintext)                               // simple hashing
-// - [v2]: seed | sha256<seed>(plaintext)
+// - [v2]: seed | sha256<seed>(plaintext)                  // add seed
-// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]
+// - [v3]: seed | sha256<seed>(plaintext) | [hex(totp)]    // add TOTP support
-// - [v4]: bcrypt(plaintext) | [hex(totp)]
+// - [v4]: bcrypt(plaintext) | [hex(totp)]                 // use proper bcrypt
+// - [v5]: bcrypt(sha512(plaintext)) | [hex(totp)]         // hash pw before bcrypt (otherwise max pw-len = 72)
 type PassHash string
 
 func (ph PassHash) Valid() bool {
@@ -64,7 +66,6 @@ func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bo
 		return int(version), nil, payload, false, nil, true
 	}
 
-	//
 	if version == 2 {
 		if len(split) != 3 {
 			return -1, nil, nil, false, nil, false
@@ -109,7 +110,21 @@ func (ph PassHash) Data() (_version int, _seed []byte, _payload []byte, _totp bo
 		totp := false
 		totpsecret := make([]byte, 0)
 		if split[2] != "0" {
-			totpsecret, err = hex.DecodeString(split[3])
+			totpsecret, err = hex.DecodeString(split[2])
+			totp = true
+		}
+		return int(version), nil, payload, totp, totpsecret, true
+	}
+
+	if version == 5 {
+		if len(split) != 3 {
+			return -1, nil, nil, false, nil, false
+		}
+		payload := []byte(split[1])
+		totp := false
+		totpsecret := make([]byte, 0)
+		if split[2] != "0" {
+			totpsecret, err = hex.DecodeString(split[2])
 			totp = true
 		}
 		return int(version), nil, payload, totp, totpsecret, true
@@ -156,6 +171,14 @@ func (ph PassHash) Verify(plainpass string, totp *string) bool {
 		}
 	}
 
+	if version == 5 {
+		if !hastotp {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil
+		} else {
+			return bcrypt.CompareHashAndPassword(payload, hash512(plainpass)) == nil && totpext.Validate(totpsecret, *totp)
+		}
+	}
+
 	return false
 }
 
@@ -209,6 +232,12 @@ func (ph PassHash) ClearTOTP() (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = "0"
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -242,6 +271,12 @@ func (ph PassHash) WithTOTP(totpSecret []byte) (PassHash, error) {
 		return PassHash(strings.Join(split, "|")), nil
 	}
 
+	if version == 5 {
+		split := strings.Split(string(ph), "|")
+		split[2] = hex.EncodeToString(totpSecret)
+		return PassHash(strings.Join(split, "|")), nil
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -271,6 +306,10 @@ func (ph PassHash) Change(newPlainPass string) (PassHash, error) {
 		return HashPasswordV4(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
 	}
 
+	if version == 5 {
+		return HashPasswordV5(newPlainPass, langext.Conditional(hastotp, totpsecret, nil))
+	}
+
 	return "", errors.New("unknown version")
 }
 
@@ -279,7 +318,24 @@ func (ph PassHash) String() string {
 }
 
 func HashPassword(plainpass string, totpSecret []byte) (PassHash, error) {
-	return HashPasswordV4(plainpass, totpSecret)
+	return HashPasswordV5(plainpass, totpSecret)
+}
+
+func HashPasswordV5(plainpass string, totpSecret []byte) (PassHash, error) {
+	var strtotp string
+
+	if totpSecret == nil {
+		strtotp = "0"
+	} else {
+		strtotp = hex.EncodeToString(totpSecret)
+	}
+
+	payload, err := bcrypt.GenerateFromPassword(hash512(plainpass), bcrypt.MinCost)
+	if err != nil {
+		return "", err
+	}
+
+	return PassHash(fmt.Sprintf("5|%s|%s", string(payload), strtotp)), nil
 }
 
 func HashPasswordV4(plainpass string, totpSecret []byte) (PassHash, error) {
@@ -340,6 +396,13 @@ func HashPasswordV0(plainpass string) (PassHash, error) {
 	return PassHash(fmt.Sprintf("0|%s", plainpass)), nil
 }
 
+func hash512(s string) []byte {
+	h := sha512.New()
+	h.Write([]byte(s))
+	bs := h.Sum(nil)
+	return bs
+}
+
 func hash256(s string) []byte {
 	h := sha256.New()
 	h.Write([]byte(s))

cryptext/passHash_test.go

@@ -0,0 +1,210 @@
+package cryptext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func TestPassHash1(t *testing.T) {
+	ph, err := HashPassword("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashTOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPassword("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V0(t *testing.T) {
+	ph, err := HashPasswordV0("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V1(t *testing.T) {
+	ph, err := HashPasswordV1("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V2(t *testing.T) {
+	ph, err := HashPasswordV2("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3(t *testing.T) {
+	ph, err := HashPasswordV3("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V3_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV3("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}
+
+func TestPassHashUpgrade_V4(t *testing.T) {
+	ph, err := HashPasswordV4("test123", nil)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertFalse(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertTrue(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+}
+
+func TestPassHashUpgrade_V4_TOTP(t *testing.T) {
+	sec, err := totpext.GenerateSecret()
+	tst.AssertNoErr(t, err)
+
+	ph, err := HashPasswordV4("test123", sec)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertTrue(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+
+	ph, err = ph.Upgrade("test123")
+	tst.AssertNoErr(t, err)
+
+	tst.AssertTrue(t, ph.Valid())
+	tst.AssertTrue(t, ph.HasTOTP())
+	tst.AssertFalse(t, ph.NeedsPasswordUpgrade())
+
+	tst.AssertFalse(t, ph.Verify("test123", nil))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+	tst.AssertTrue(t, ph.Verify("test123", langext.Ptr(totpext.TOTP(sec))))
+	tst.AssertFalse(t, ph.Verify("test124", nil))
+}

cursortoken/filter.go

@@ -4,6 +4,10 @@ import (
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
+type RawFilter interface {
+	FilterQuery() mongo.Pipeline
+}
+
 type Filter interface {
 	FilterQuery() mongo.Pipeline
 	Pagination() (string, SortDirection, string, SortDirection)

dataext/syncSet.go

@@ -7,6 +7,9 @@ type SyncSet[TData comparable] struct {
 	lock sync.Mutex
 }
 
+// Add adds `value` to the set
+// returns true  if the value was actually inserted
+// returns false if the value already existed
 func (s *SyncSet[TData]) Add(value TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -15,10 +18,10 @@ func (s *SyncSet[TData]) Add(value TData) bool {
 		s.data = make(map[TData]bool)
 	}
 
-	_, ok := s.data[value]
+	_, existsInPreState := s.data[value]
 	s.data[value] = true
 
-	return !ok
+	return !existsInPreState
 }
 
 func (s *SyncSet[TData]) AddAll(values []TData) {

dataext/tuple.go

@@ -0,0 +1,170 @@
+package dataext
+
+type ValueGroup interface {
+	TupleLength() int
+	TupleValues() []any
+}
+
+// ----------------------------------------------------------------------------
+
+type Single[T1 any] struct {
+	V1 T1
+}
+
+func (s Single[T1]) TupleLength() int {
+	return 1
+}
+
+func (s Single[T1]) TupleValues() []any {
+	return []any{s.V1}
+}
+
+// ----------------------------------------------------------------------------
+
+type Tuple[T1 any, T2 any] struct {
+	V1 T1
+	V2 T2
+}
+
+func (t Tuple[T1, T2]) TupleLength() int {
+	return 2
+}
+
+func (t Tuple[T1, T2]) TupleValues() []any {
+	return []any{t.V1, t.V2}
+}
+
+// ----------------------------------------------------------------------------
+
+type Triple[T1 any, T2 any, T3 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+}
+
+func (t Triple[T1, T2, T3]) TupleLength() int {
+	return 3
+}
+
+func (t Triple[T1, T2, T3]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3}
+}
+
+// ----------------------------------------------------------------------------
+
+type Quadruple[T1 any, T2 any, T3 any, T4 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+}
+
+func (t Quadruple[T1, T2, T3, T4]) TupleLength() int {
+	return 4
+}
+
+func (t Quadruple[T1, T2, T3, T4]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4}
+}
+
+// ----------------------------------------------------------------------------
+
+type Quintuple[T1 any, T2 any, T3 any, T4 any, T5 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+	V5 T5
+}
+
+func (t Quintuple[T1, T2, T3, T4, T5]) TupleLength() int {
+	return 5
+}
+
+func (t Quintuple[T1, T2, T3, T4, T5]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4, t.V5}
+
+}
+
+// ----------------------------------------------------------------------------
+
+type Sextuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+	V5 T5
+	V6 T6
+}
+
+func (t Sextuple[T1, T2, T3, T4, T5, T6]) TupleLength() int {
+	return 6
+}
+
+func (t Sextuple[T1, T2, T3, T4, T5, T6]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4, t.V5, t.V6}
+
+}
+
+// ----------------------------------------------------------------------------
+
+type Septuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+	V5 T5
+	V6 T6
+	V7 T7
+}
+
+func (t Septuple[T1, T2, T3, T4, T5, T6, T7]) TupleLength() int {
+	return 7
+}
+
+func (t Septuple[T1, T2, T3, T4, T5, T6, T7]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4, t.V5, t.V6, t.V7}
+}
+
+// ----------------------------------------------------------------------------
+
+type Octuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+	V5 T5
+	V6 T6
+	V7 T7
+	V8 T8
+}
+
+func (t Octuple[T1, T2, T3, T4, T5, T6, T7, T8]) TupleLength() int {
+	return 8
+}
+
+func (t Octuple[T1, T2, T3, T4, T5, T6, T7, T8]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4, t.V5, t.V6, t.V7, t.V8}
+}
+
+// ----------------------------------------------------------------------------
+
+type Nonuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any, T9 any] struct {
+	V1 T1
+	V2 T2
+	V3 T3
+	V4 T4
+	V5 T5
+	V6 T6
+	V7 T7
+	V8 T8
+	V9 T9
+}
+
+func (t Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9]) TupleLength() int {
+	return 9
+}
+
+func (t Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9]) TupleValues() []any {
+	return []any{t.V1, t.V2, t.V3, t.V4, t.V5, t.V6, t.V7, t.V8, t.V9}
+}

enums/enum.go

@@ -0,0 +1,31 @@
+package enums
+
+type Enum interface {
+	Valid() bool
+	ValuesAny() []any
+	ValuesMeta() []EnumMetaValue
+	VarName() string
+}
+
+type StringEnum interface {
+	Enum
+	String() string
+}
+
+type DescriptionEnum interface {
+	Enum
+	Description() string
+	DescriptionMeta() EnumDescriptionMetaValue
+}
+
+type EnumMetaValue struct {
+	VarName     string  `json:"varName"`
+	Value       Enum    `json:"value"`
+	Description *string `json:"description"`
+}
+
+type EnumDescriptionMetaValue struct {
+	VarName     string `json:"varName"`
+	Value       Enum   `json:"value"`
+	Description string `json:"description"`
+}

exerr/builder.go

@@ -0,0 +1,480 @@
+package exerr
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"gogs.mikescher.com/BlackForestBytes/goext/enums"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+	"os"
+	"runtime/debug"
+	"strings"
+	"time"
+)
+
+//
+// ==== USAGE =====
+//
+// If some method returns an error _always wrap it into an exerror:
+//     value, err := do_something(..)
+//     if err != nil {
+//         return nil, exerror.Wrap(err, "do something failed").Build()
+//     }
+//
+// If possible add metadata to the error (eg the id that was not found, ...), the methods are the same as in zerolog
+//     return nil, exerror.Wrap(err, "do something failed").Str("someid", id).Int("count", in.Count).Build()
+//
+// You can change the errortype with `.User()` and `.System()` (User-errors are 400 and System-errors 500)
+// You can also manually set the statuscode with `.WithStatuscode(http.NotFound)`
+// You can set the type with `WithType(..)`
+//
+// New Errors (that don't wrap an existing err object) are created with New
+//     return nil, exerror.New(exerror.TypeInternal, "womethign wen horrible wrong").Build()
+// You can eitehr use an existing ErrorType, the "catch-all" ErrInternal, or add you own ErrType in consts.go
+//
+// All errors should be handled one of the following four ways:
+//   - return the error to the caller and let him handle it:
+//     (also auto-prints the error to the log)
+//     => Wrap/New + Build
+//   - Print the error
+//     (also auto-sends it to the error-service)
+//     This is useful for errors that happen asynchron or are non-fatal for the current request
+//     => Wrap/New + Print
+//   - Return the error to the Rest-API caller
+//     (also auto-prints the error to the log)
+//     (also auto-sends it to the error-service)
+//     => Wrap/New + Output
+//   - Print and stop the service
+//     (also auto-sends it to the error-service)
+//     => Wrap/New + Fatal
+//
+
+var stackSkipLogger zerolog.Logger
+
+func init() {
+	cw := zerolog.ConsoleWriter{
+		Out:        os.Stdout,
+		TimeFormat: "2006-01-02 15:04:05 Z07:00",
+	}
+
+	multi := zerolog.MultiLevelWriter(cw)
+	stackSkipLogger = zerolog.New(multi).With().Timestamp().CallerWithSkipFrameCount(4).Logger()
+}
+
+type Builder struct {
+	errorData       *ExErr
+	containsGinData bool
+	noLog           bool
+}
+
+func Get(err error) *Builder {
+	return &Builder{errorData: FromError(err)}
+}
+
+func New(t ErrorType, msg string) *Builder {
+	return &Builder{errorData: newExErr(CatSystem, t, msg)}
+}
+
+func Wrap(err error, msg string) *Builder {
+	if err == nil {
+		return &Builder{errorData: newExErr(CatSystem, TypeInternal, msg)} // prevent NPE if we call Wrap with err==nil
+	}
+
+	if !pkgconfig.RecursiveErrors {
+		v := FromError(err)
+		v.Message = msg
+		return &Builder{errorData: v}
+	}
+	return &Builder{errorData: wrapExErr(FromError(err), msg, CatWrap, 1)}
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) WithType(t ErrorType) *Builder {
+	b.errorData.Type = t
+	return b
+}
+
+func (b *Builder) WithStatuscode(status int) *Builder {
+	b.errorData.StatusCode = &status
+	return b
+}
+
+func (b *Builder) WithMessage(msg string) *Builder {
+	b.errorData.Message = msg
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+// Err changes the Severity to ERROR (default)
+// The error will be:
+//
+//   - On Build():
+//
+//   - Short-Logged as Err
+//
+//   - On Print():
+//
+//   - Logged as Err
+//
+//   - Send to the error-service
+//
+//   - On Output():
+//
+//   - Logged as Err
+//
+//   - Send to the error-service
+func (b *Builder) Err() *Builder {
+	b.errorData.Severity = SevErr
+	return b
+}
+
+// Warn changes the Severity to WARN
+// The error will be:
+//
+//   - On Build():
+//
+//   - -(nothing)-
+//
+//   - On Print():
+//
+//   - Short-Logged as Warn
+//
+//   - On Output():
+//
+//   - Logged as Warn
+func (b *Builder) Warn() *Builder {
+	b.errorData.Severity = SevWarn
+	return b
+}
+
+// Info changes the Severity to INFO
+// The error will be:
+//
+//   - On Build():
+//
+//   - -(nothing)-
+//
+//   - On Print():
+//
+//   - -(nothing)-
+//
+//   - On Output():
+//
+//   - -(nothing)-
+func (b *Builder) Info() *Builder {
+	b.errorData.Severity = SevInfo
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+// User sets the Category to CatUser
+//
+// Errors with category
+func (b *Builder) User() *Builder {
+	b.errorData.Category = CatUser
+	return b
+}
+
+func (b *Builder) System() *Builder {
+	b.errorData.Category = CatSystem
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) NoLog() *Builder {
+	b.noLog = true
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) Id(key string, val fmt.Stringer) *Builder {
+	return b.addMeta(key, MDTID, newIDWrap(val))
+}
+
+func (b *Builder) StrPtr(key string, val *string) *Builder {
+	return b.addMeta(key, MDTStringPtr, val)
+}
+
+func (b *Builder) Str(key string, val string) *Builder {
+	return b.addMeta(key, MDTString, val)
+}
+
+func (b *Builder) Int(key string, val int) *Builder {
+	return b.addMeta(key, MDTInt, val)
+}
+
+func (b *Builder) Int8(key string, val int8) *Builder {
+	return b.addMeta(key, MDTInt8, val)
+}
+
+func (b *Builder) Int16(key string, val int16) *Builder {
+	return b.addMeta(key, MDTInt16, val)
+}
+
+func (b *Builder) Int32(key string, val int32) *Builder {
+	return b.addMeta(key, MDTInt32, val)
+}
+
+func (b *Builder) Int64(key string, val int64) *Builder {
+	return b.addMeta(key, MDTInt64, val)
+}
+
+func (b *Builder) Float32(key string, val float32) *Builder {
+	return b.addMeta(key, MDTFloat32, val)
+}
+
+func (b *Builder) Float64(key string, val float64) *Builder {
+	return b.addMeta(key, MDTFloat64, val)
+}
+
+func (b *Builder) Bool(key string, val bool) *Builder {
+	return b.addMeta(key, MDTBool, val)
+}
+
+func (b *Builder) Bytes(key string, val []byte) *Builder {
+	return b.addMeta(key, MDTBytes, val)
+}
+
+func (b *Builder) ObjectID(key string, val primitive.ObjectID) *Builder {
+	return b.addMeta(key, MDTObjectID, val)
+}
+
+func (b *Builder) Time(key string, val time.Time) *Builder {
+	return b.addMeta(key, MDTTime, val)
+}
+
+func (b *Builder) Dur(key string, val time.Duration) *Builder {
+	return b.addMeta(key, MDTDuration, val)
+}
+
+func (b *Builder) Strs(key string, val []string) *Builder {
+	return b.addMeta(key, MDTStringArray, val)
+}
+
+func (b *Builder) Ints(key string, val []int) *Builder {
+	return b.addMeta(key, MDTIntArray, val)
+}
+
+func (b *Builder) Ints32(key string, val []int32) *Builder {
+	return b.addMeta(key, MDTInt32Array, val)
+}
+
+func (b *Builder) Type(key string, cls interface{}) *Builder {
+	return b.addMeta(key, MDTString, fmt.Sprintf("%T", cls))
+}
+
+func (b *Builder) Interface(key string, val interface{}) *Builder {
+	return b.addMeta(key, MDTAny, newAnyWrap(val))
+}
+
+func (b *Builder) Any(key string, val any) *Builder {
+	return b.addMeta(key, MDTAny, newAnyWrap(val))
+}
+
+func (b *Builder) Stringer(key string, val fmt.Stringer) *Builder {
+	if langext.IsNil(val) {
+		return b.addMeta(key, MDTString, "(!nil)")
+	} else {
+		return b.addMeta(key, MDTString, val.String())
+	}
+}
+
+func (b *Builder) Enum(key string, val enums.Enum) *Builder {
+	return b.addMeta(key, MDTEnum, newEnumWrap(val))
+}
+
+func (b *Builder) Stack() *Builder {
+	return b.addMeta("@Stack", MDTString, string(debug.Stack()))
+}
+
+func (b *Builder) Errs(key string, val []error) *Builder {
+	for i, valerr := range val {
+		b.addMeta(fmt.Sprintf("%v[%v]", key, i), MDTString, Get(valerr).errorData.FormatLog(LogPrintFull))
+	}
+	return b
+}
+
+func (b *Builder) GinReq(ctx context.Context, g *gin.Context, req *http.Request) *Builder {
+	if v := ctx.Value("start_timestamp"); v != nil {
+		if t, ok := v.(time.Time); ok {
+			b.Time("ctx.startTimestamp", t)
+			b.Time("ctx.endTimestamp", time.Now())
+		}
+	}
+	b.Str("gin.method", req.Method)
+	b.Str("gin.path", g.FullPath())
+	b.Strs("gin.header", extractHeader(g.Request.Header))
+	if req.URL != nil {
+		b.Str("gin.url", req.URL.String())
+	}
+	if ctxVal := g.GetString("apiversion"); ctxVal != "" {
+		b.Str("gin.context.apiversion", ctxVal)
+	}
+	if ctxVal := g.GetString("uid"); ctxVal != "" {
+		b.Str("gin.context.uid", ctxVal)
+	}
+	if ctxVal := g.GetString("fcmId"); ctxVal != "" {
+		b.Str("gin.context.fcmid", ctxVal)
+	}
+	if ctxVal := g.GetString("reqid"); ctxVal != "" {
+		b.Str("gin.context.reqid", ctxVal)
+	}
+	if req.Method != "GET" && req.Body != nil {
+
+		if req.Header.Get("Content-Type") == "application/json" {
+			if brc, ok := req.Body.(dataext.BufferedReadCloser); ok {
+				if bin, err := brc.BufferedAll(); err == nil {
+					if len(bin) < 16*1024 {
+						var prettyJSON bytes.Buffer
+						err = json.Indent(&prettyJSON, bin, "", "  ")
+						if err == nil {
+							b.Str("gin.body", string(prettyJSON.Bytes()))
+						} else {
+							b.Bytes("gin.body", bin)
+						}
+					} else {
+						b.Str("gin.body", fmt.Sprintf("[[%v bytes | %s]]", len(bin), req.Header.Get("Content-Type")))
+					}
+				}
+			}
+		}
+
+		if req.Header.Get("Content-Type") == "multipart/form-data" || req.Header.Get("Content-Type") == "x-www-form-urlencoded" {
+			if brc, ok := req.Body.(dataext.BufferedReadCloser); ok {
+				if bin, err := brc.BufferedAll(); err == nil {
+					if len(bin) < 16*1024 {
+						b.Bytes("gin.body", bin)
+					} else {
+						b.Str("gin.body", fmt.Sprintf("[[%v bytes | %s]]", len(bin), req.Header.Get("Content-Type")))
+					}
+				}
+			}
+		}
+
+	}
+
+	b.containsGinData = true
+	return b
+}
+
+func formatHeader(header map[string][]string) string {
+	ml := 1
+	for k, _ := range header {
+		if len(k) > ml {
+			ml = len(k)
+		}
+	}
+	r := ""
+	for k, v := range header {
+		if r != "" {
+			r += "\n"
+		}
+		for _, hval := range v {
+			value := hval
+			value = strings.ReplaceAll(value, "\n", "\\n")
+			value = strings.ReplaceAll(value, "\r", "\\r")
+			value = strings.ReplaceAll(value, "\t", "\\t")
+			r += langext.StrPadRight(k, " ", ml) + " := " + value
+		}
+	}
+	return r
+}
+
+func extractHeader(header map[string][]string) []string {
+	r := make([]string, 0, len(header))
+	for k, v := range header {
+		for _, hval := range v {
+			value := hval
+			value = strings.ReplaceAll(value, "\n", "\\n")
+			value = strings.ReplaceAll(value, "\r", "\\r")
+			value = strings.ReplaceAll(value, "\t", "\\t")
+			r = append(r, k+": "+value)
+		}
+	}
+	return r
+}
+
+// ----------------------------------------------------------------------------
+
+// Build creates a new error, ready to pass up the stack
+// If the errors is not SevWarn or SevInfo it gets also logged (in short form, without stacktrace) onto stdout
+// Can be gloablly configured with ZeroLogErrTraces and ZeroLogAllTraces
+// Can be locally suppressed with Builder.NoLog()
+func (b *Builder) Build() error {
+	warnOnPkgConfigNotInitialized()
+
+	if pkgconfig.ZeroLogErrTraces && !b.noLog && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
+		b.errorData.ShortLog(stackSkipLogger.Error())
+	} else if pkgconfig.ZeroLogAllTraces && !b.noLog {
+		b.errorData.ShortLog(stackSkipLogger.Error())
+	}
+
+	b.CallListener(MethodBuild)
+
+	return b.errorData
+}
+
+// Output prints the error onto the gin stdout.
+// The error also gets printed to stdout/stderr
+// If the error is SevErr|SevFatal we also send it to the error-service
+func (b *Builder) Output(ctx context.Context, g *gin.Context) {
+	if !b.containsGinData && g.Request != nil {
+		// Auto-Add gin metadata if the caller hasn't already done it
+		b.GinReq(ctx, g, g.Request)
+	}
+
+	b.errorData.Output(g)
+
+	if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+		b.errorData.Log(stackSkipLogger.Error())
+	} else if b.errorData.Severity == SevWarn {
+		b.errorData.Log(stackSkipLogger.Warn())
+	}
+
+	b.CallListener(MethodOutput)
+}
+
+// Print prints the error
+// If the error is SevErr we also send it to the error-service
+func (b *Builder) Print() {
+	if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+		b.errorData.Log(stackSkipLogger.Error())
+	} else if b.errorData.Severity == SevWarn {
+		b.errorData.ShortLog(stackSkipLogger.Warn())
+	}
+
+	b.CallListener(MethodPrint)
+}
+
+func (b *Builder) Format(level LogPrintLevel) string {
+	return b.errorData.FormatLog(level)
+}
+
+// Fatal prints the error and terminates the program
+// If the error is SevErr we also send it to the error-service
+func (b *Builder) Fatal() {
+	b.errorData.Severity = SevFatal
+	b.errorData.Log(stackSkipLogger.WithLevel(zerolog.FatalLevel))
+
+	b.CallListener(MethodFatal)
+
+	os.Exit(1)
+}
+
+// ----------------------------------------------------------------------------
+
+func (b *Builder) addMeta(key string, mdtype metaDataType, val interface{}) *Builder {
+	b.errorData.Meta.add(key, mdtype, val)
+	return b
+}

exerr/constructor.go

@@ -0,0 +1,204 @@
+package exerr
+
+import (
+	"encoding/json"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+	"time"
+)
+
+var reflectTypeStr = reflect.TypeOf("")
+
+func FromError(err error) *ExErr {
+	if verr, ok := err.(*ExErr); ok {
+		// A simple ExErr
+		return verr
+	}
+
+	// A foreign error (eg a MongoDB exception)
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       CatForeign,
+		Type:           TypeInternal,
+		Severity:       SevErr,
+		Timestamp:      time.Time{},
+		StatusCode:     nil,
+		Message:        err.Error(),
+		WrappedErrType: fmt.Sprintf("%T", err),
+		WrappedErr:     err,
+		Caller:         "",
+		OriginalError:  nil,
+		Meta:           getForeignMeta(err),
+	}
+}
+
+func newExErr(cat ErrorCategory, errtype ErrorType, msg string) *ExErr {
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       cat,
+		Type:           errtype,
+		Severity:       SevErr,
+		Timestamp:      time.Now(),
+		StatusCode:     nil,
+		Message:        msg,
+		WrappedErrType: "",
+		WrappedErr:     nil,
+		Caller:         callername(2),
+		OriginalError:  nil,
+		Meta:           make(map[string]MetaValue),
+	}
+}
+
+func wrapExErr(e *ExErr, msg string, cat ErrorCategory, stacktraceskip int) *ExErr {
+	return &ExErr{
+		UniqueID:       newID(),
+		Category:       cat,
+		Type:           TypeWrap,
+		Severity:       SevErr,
+		Timestamp:      time.Now(),
+		StatusCode:     e.StatusCode,
+		Message:        msg,
+		WrappedErrType: "",
+		WrappedErr:     nil,
+		Caller:         callername(1 + stacktraceskip),
+		OriginalError:  e,
+		Meta:           make(map[string]MetaValue),
+	}
+}
+
+func getForeignMeta(err error) (mm MetaMap) {
+	mm = make(map[string]MetaValue)
+
+	defer func() {
+		if panicerr := recover(); panicerr != nil {
+			New(TypePanic, "Panic while trying to get foreign meta").
+				Str("source", err.Error()).
+				Interface("panic-object", panicerr).
+				Stack().
+				Print()
+		}
+	}()
+
+	rval := reflect.ValueOf(err)
+	if rval.Kind() == reflect.Interface || rval.Kind() == reflect.Ptr {
+		rval = reflect.ValueOf(err).Elem()
+	}
+
+	mm.add("foreign.errortype", MDTString, rval.Type().String())
+
+	for k, v := range addMetaPrefix("foreign", getReflectedMetaValues(err, 8)) {
+		mm[k] = v
+	}
+
+	return mm
+}
+
+func getReflectedMetaValues(value interface{}, remainingDepth int) map[string]MetaValue {
+
+	if remainingDepth <= 0 {
+		return map[string]MetaValue{}
+	}
+
+	if langext.IsNil(value) {
+		return map[string]MetaValue{"": {DataType: MDTNil, Value: nil}}
+	}
+
+	rval := reflect.ValueOf(value)
+
+	if rval.Type().Kind() == reflect.Ptr {
+
+		if rval.IsNil() {
+			return map[string]MetaValue{"*": {DataType: MDTNil, Value: nil}}
+		}
+
+		elem := rval.Elem()
+
+		return addMetaPrefix("*", getReflectedMetaValues(elem.Interface(), remainingDepth-1))
+	}
+
+	if !rval.CanInterface() {
+		return map[string]MetaValue{"": {DataType: MDTString, Value: "<<no-interface>>"}}
+	}
+
+	raw := rval.Interface()
+
+	switch ifraw := raw.(type) {
+	case time.Time:
+		return map[string]MetaValue{"": {DataType: MDTTime, Value: ifraw}}
+	case time.Duration:
+		return map[string]MetaValue{"": {DataType: MDTDuration, Value: ifraw}}
+	case int:
+		return map[string]MetaValue{"": {DataType: MDTInt, Value: ifraw}}
+	case int8:
+		return map[string]MetaValue{"": {DataType: MDTInt8, Value: ifraw}}
+	case int16:
+		return map[string]MetaValue{"": {DataType: MDTInt16, Value: ifraw}}
+	case int32:
+		return map[string]MetaValue{"": {DataType: MDTInt32, Value: ifraw}}
+	case int64:
+		return map[string]MetaValue{"": {DataType: MDTInt64, Value: ifraw}}
+	case string:
+		return map[string]MetaValue{"": {DataType: MDTString, Value: ifraw}}
+	case bool:
+		return map[string]MetaValue{"": {DataType: MDTBool, Value: ifraw}}
+	case []byte:
+		return map[string]MetaValue{"": {DataType: MDTBytes, Value: ifraw}}
+	case float32:
+		return map[string]MetaValue{"": {DataType: MDTFloat32, Value: ifraw}}
+	case float64:
+		return map[string]MetaValue{"": {DataType: MDTFloat64, Value: ifraw}}
+	case []int:
+		return map[string]MetaValue{"": {DataType: MDTIntArray, Value: ifraw}}
+	case []int32:
+		return map[string]MetaValue{"": {DataType: MDTInt32Array, Value: ifraw}}
+	case primitive.ObjectID:
+		return map[string]MetaValue{"": {DataType: MDTObjectID, Value: ifraw}}
+	case []string:
+		return map[string]MetaValue{"": {DataType: MDTStringArray, Value: ifraw}}
+	}
+
+	if rval.Type().Kind() == reflect.Struct {
+		m := make(map[string]MetaValue)
+		for i := 0; i < rval.NumField(); i++ {
+			fieldtype := rval.Type().Field(i)
+
+			fieldname := fieldtype.Name
+
+			if fieldtype.IsExported() {
+				for k, v := range addMetaPrefix(fieldname, getReflectedMetaValues(rval.Field(i).Interface(), remainingDepth-1)) {
+					m[k] = v
+				}
+			}
+		}
+		return m
+	}
+
+	if rval.Type().ConvertibleTo(reflectTypeStr) {
+		return map[string]MetaValue{"": {DataType: MDTString, Value: rval.Convert(reflectTypeStr).String()}}
+	}
+
+	jsonval, err := json.Marshal(value)
+	if err != nil {
+		panic(err) // gets recovered later up
+	}
+
+	return map[string]MetaValue{"": {DataType: MDTString, Value: string(jsonval)}}
+}
+
+func addMetaPrefix(prefix string, m map[string]MetaValue) map[string]MetaValue {
+	if len(m) == 1 {
+		for k, v := range m {
+			if k == "" {
+				return map[string]MetaValue{prefix: v}
+			}
+		}
+	}
+
+	r := make(map[string]MetaValue, len(m))
+	for k, v := range m {
+		r[prefix+"."+k] = v
+	}
+	return r
+}

exerr/data.go

@@ -0,0 +1,88 @@
+package exerr
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+)
+
+type ErrorCategory struct{ Category string }
+
+var (
+	CatWrap    = ErrorCategory{"Wrap"}    // The error is simply wrapping another error (e.g. when a grpc call returns an error)
+	CatSystem  = ErrorCategory{"System"}  // An internal system error (e.g. connection to db failed)
+	CatUser    = ErrorCategory{"User"}    // The user (the API caller) did something wrong (e.g. he has no permissions to do this)
+	CatForeign = ErrorCategory{"Foreign"} // A foreign error that some component threw (e.g. an unknown mongodb error), happens if we call Wrap(..) on an non-bmerror value
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllCategories = []ErrorCategory{CatWrap, CatSystem, CatUser, CatForeign}
+
+type ErrorSeverity struct{ Severity string }
+
+var (
+	SevTrace = ErrorSeverity{"Trace"}
+	SevDebug = ErrorSeverity{"Debug"}
+	SevInfo  = ErrorSeverity{"Info"}
+	SevWarn  = ErrorSeverity{"Warn"}
+	SevErr   = ErrorSeverity{"Err"}
+	SevFatal = ErrorSeverity{"Fatal"}
+)
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllSeverities = []ErrorSeverity{SevTrace, SevDebug, SevInfo, SevWarn, SevErr, SevFatal}
+
+type ErrorType struct {
+	Key               string
+	DefaultStatusCode *int
+}
+
+//goland:noinspection GoUnusedGlobalVariable
+var (
+	TypeInternal       = NewType("INTERNAL_ERROR", langext.Ptr(500))
+	TypePanic          = NewType("PANIC", langext.Ptr(500))
+	TypeNotImplemented = NewType("NOT_IMPLEMENTED", langext.Ptr(500))
+
+	TypeMongoQuery        = NewType("MONGO_QUERY", langext.Ptr(500))
+	TypeCursorTokenDecode = NewType("CURSOR_TOKEN_DECODE", langext.Ptr(500))
+	TypeMongoFilter       = NewType("MONGO_FILTER", langext.Ptr(500))
+	TypeMongoReflection   = NewType("MONGO_REFLECTION", langext.Ptr(500))
+	TypeMongoInvalidOpt   = NewType("MONGO_INVALIDOPT", langext.Ptr(500))
+
+	TypeWrap = NewType("Wrap", nil)
+
+	TypeBindFailURI      = NewType("BINDFAIL_URI", langext.Ptr(400))
+	TypeBindFailQuery    = NewType("BINDFAIL_QUERY", langext.Ptr(400))
+	TypeBindFailJSON     = NewType("BINDFAIL_JSON", langext.Ptr(400))
+	TypeBindFailFormData = NewType("BINDFAIL_FORMDATA", langext.Ptr(400))
+	TypeBindFailHeader   = NewType("BINDFAIL_HEADER", langext.Ptr(400))
+
+	TypeMarshalEntityID = NewType("MARSHAL_ENTITY_ID", langext.Ptr(400))
+	TypeInvalidCSID     = NewType("INVALID_CSID", langext.Ptr(400))
+
+	TypeGoogleStatuscode = NewType("GOOGLE_STATUSCODE", langext.Ptr(400))
+	TypeGoogleResponse   = NewType("GOOGLE_RESPONSE", langext.Ptr(400))
+
+	TypeUnauthorized = NewType("UNAUTHORIZED", langext.Ptr(401))
+	TypeAuthFailed   = NewType("AUTH_FAILED", langext.Ptr(401))
+
+	// other values come from the downstream application that uses goext
+)
+
+var registeredTypes = dataext.SyncSet[string]{}
+
+func NewType(key string, defStatusCode *int) ErrorType {
+	insertOkay := registeredTypes.Add(key)
+	if !insertOkay {
+		panic("Cannot register same ErrType ('" + key + "') more than once")
+	}
+
+	return ErrorType{key, defStatusCode}
+}
+
+type LogPrintLevel string
+
+const (
+	LogPrintFull     LogPrintLevel = "Full"
+	LogPrintOverview LogPrintLevel = "Overview"
+	LogPrintShort    LogPrintLevel = "Short"
+)

exerr/errinit.go

@@ -0,0 +1,84 @@
+package exerr
+
+import (
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+)
+
+type ErrorPackageConfig struct {
+	ZeroLogErrTraces       bool                                             // autom print zerolog logs on .Build()  (for SevErr and SevFatal)
+	ZeroLogAllTraces       bool                                             // autom print zerolog logs on .Build()  (for all Severities)
+	RecursiveErrors        bool                                             // errors contains their Origin-Error
+	ExtendedGinOutput      bool                                             // Log extended data (trace, meta, ...) to gin in err.Output()
+	IncludeMetaInGinOutput bool                                             // Log meta fields ( from e.g. `.Str(key, val).Build()` ) to gin in err.Output()
+	ExtendGinOutput        func(err *ExErr, json map[string]any)            // (Optionally) extend the gin output with more fields
+	ExtendGinDataOutput    func(err *ExErr, depth int, json map[string]any) // (Optionally) extend the gin `__data` output with more fields
+}
+
+type ErrorPackageConfigInit struct {
+	ZeroLogErrTraces       *bool
+	ZeroLogAllTraces       *bool
+	RecursiveErrors        *bool
+	ExtendedGinOutput      *bool
+	IncludeMetaInGinOutput *bool
+	ExtendGinOutput        func(err *ExErr, json map[string]any)
+	ExtendGinDataOutput    func(err *ExErr, depth int, json map[string]any)
+}
+
+var initialized = false
+
+var pkgconfig = ErrorPackageConfig{
+	ZeroLogErrTraces:       true,
+	ZeroLogAllTraces:       false,
+	RecursiveErrors:        true,
+	ExtendedGinOutput:      false,
+	IncludeMetaInGinOutput: true,
+	ExtendGinOutput:        func(err *ExErr, json map[string]any) {},
+	ExtendGinDataOutput:    func(err *ExErr, depth int, json map[string]any) {},
+}
+
+// Init initializes the exerr packages
+// Must be called at the program start, before (!) any errors
+// Is not thread-safe
+func Init(cfg ErrorPackageConfigInit) {
+	if initialized {
+		panic("Cannot re-init error package")
+	}
+
+	ego := func(err *ExErr, json map[string]any) {}
+	egdo := func(err *ExErr, depth int, json map[string]any) {}
+
+	if cfg.ExtendGinOutput != nil {
+		ego = cfg.ExtendGinOutput
+	}
+	if cfg.ExtendGinDataOutput != nil {
+		egdo = cfg.ExtendGinDataOutput
+	}
+
+	pkgconfig = ErrorPackageConfig{
+		ZeroLogErrTraces:       langext.Coalesce(cfg.ZeroLogErrTraces, pkgconfig.ZeroLogErrTraces),
+		ZeroLogAllTraces:       langext.Coalesce(cfg.ZeroLogAllTraces, pkgconfig.ZeroLogAllTraces),
+		RecursiveErrors:        langext.Coalesce(cfg.RecursiveErrors, pkgconfig.RecursiveErrors),
+		ExtendedGinOutput:      langext.Coalesce(cfg.ExtendedGinOutput, pkgconfig.ExtendedGinOutput),
+		IncludeMetaInGinOutput: langext.Coalesce(cfg.IncludeMetaInGinOutput, pkgconfig.IncludeMetaInGinOutput),
+		ExtendGinOutput:        ego,
+		ExtendGinDataOutput:    egdo,
+	}
+
+	initialized = true
+}
+
+func Initialized() bool {
+	return initialized
+}
+
+func warnOnPkgConfigNotInitialized() {
+	if !initialized {
+		fmt.Printf("\n")
+		fmt.Printf("%s\n", langext.StrRepeat("=", 80))
+		fmt.Printf("%s\n", "[WARNING] exerr package used without initializiation")
+		fmt.Printf("%s\n", "          call exerr.Init() in your main() function")
+		fmt.Printf("%s\n", langext.StrRepeat("=", 80))
+		fmt.Printf("\n")
+	}
+}

exerr/exerr.go

@@ -0,0 +1,383 @@
+package exerr
+
+import (
+	"github.com/rs/xid"
+	"github.com/rs/zerolog"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+	"strings"
+	"time"
+)
+
+type ExErr struct {
+	UniqueID string `json:"uniqueID"`
+
+	Timestamp time.Time     `json:"timestamp"`
+	Category  ErrorCategory `json:"category"`
+	Severity  ErrorSeverity `json:"severity"`
+	Type      ErrorType     `json:"type"`
+
+	StatusCode *int `json:"statusCode"`
+
+	Message        string `json:"message"`
+	WrappedErrType string `json:"wrappedErrType"`
+	WrappedErr     any    `json:"-"`
+	Caller         string `json:"caller"`
+
+	OriginalError *ExErr `json:"originalError"`
+
+	Meta MetaMap `json:"meta"`
+}
+
+func (ee *ExErr) Error() string {
+	return ee.RecursiveMessage()
+}
+
+// Unwrap must be implemented so that some error.XXX methods work
+func (ee *ExErr) Unwrap() error {
+	if ee.OriginalError == nil {
+		return nil // this is neccessary - otherwise we return a wrapped nil and the `x == nil` comparison fails (= panic in errors.Is and other failures)
+	}
+	return ee.OriginalError
+}
+
+// Is must be implemented so that error.Is(x) works
+func (ee *ExErr) Is(e error) bool {
+	return IsFrom(ee, e)
+}
+
+// As must be implemented so that error.As(x) works
+//
+//goland:noinspection GoTypeAssertionOnErrors
+func (ee *ExErr) As(target any) bool {
+	if dstErr, ok := target.(*ExErr); ok {
+
+		if dst0, ok := ee.contains(dstErr); ok {
+			dstErr = dst0
+			return true
+		} else {
+			return false
+		}
+
+	} else {
+
+		val := reflect.ValueOf(target)
+
+		typStr := val.Type().Elem().String()
+
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			if curr.Category == CatForeign && curr.WrappedErrType == typStr && curr.WrappedErr != nil {
+				val.Elem().Set(reflect.ValueOf(curr.WrappedErr))
+				return true
+			}
+		}
+
+		return false
+	}
+}
+
+func (ee *ExErr) Log(evt *zerolog.Event) {
+	evt.Msg(ee.FormatLog(LogPrintFull))
+}
+
+func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
+	if lvl == LogPrintShort {
+
+		msg := ee.Message
+		if ee.OriginalError != nil && ee.OriginalError.Category == CatForeign {
+			msg = msg + " (" + strings.ReplaceAll(ee.OriginalError.Message, "\n", " ") + ")"
+		}
+
+		if ee.Type != TypeWrap {
+			return "[" + ee.Type.Key + "] " + msg
+		} else {
+			return msg
+		}
+
+	} else if lvl == LogPrintOverview {
+
+		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
+
+		indent := ""
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			indent += "  "
+
+			str += indent
+			str += "-> "
+			strmsg := strings.Trim(curr.Message, " \r\n\t")
+			if lbidx := strings.Index(curr.Message, "\n"); lbidx >= 0 {
+				strmsg = strmsg[0:lbidx]
+			}
+			strmsg = langext.StrLimit(strmsg, 61, "...")
+			str += strmsg
+			str += "\n"
+
+		}
+		return str
+
+	} else if lvl == LogPrintFull {
+
+		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
+
+		indent := ""
+		for curr := ee; curr != nil; curr = curr.OriginalError {
+			indent += "  "
+
+			etype := ee.Type.Key
+			if ee.Type == TypeWrap {
+				etype = "~"
+			}
+
+			str += indent
+			str += "-> ["
+			str += etype
+			if curr.Category == CatForeign {
+				str += "|Foreign"
+			}
+			str += "] "
+			str += strings.ReplaceAll(curr.Message, "\n", " ")
+			if curr.Caller != "" {
+				str += " (@ "
+				str += curr.Caller
+				str += ")"
+			}
+			str += "\n"
+
+			if curr.Meta.Any() {
+				meta := indent + "   {" + curr.Meta.FormatOneLine(240) + "}"
+				if len(meta) < 200 {
+					str += meta
+					str += "\n"
+				} else {
+					str += curr.Meta.FormatMultiLine(indent+"   ", "  ", 1024)
+					str += "\n"
+				}
+			}
+		}
+		return str
+
+	} else {
+
+		return "[?[" + ee.UniqueID + "]?]"
+
+	}
+}
+
+func (ee *ExErr) ShortLog(evt *zerolog.Event) {
+	ee.Meta.Apply(evt, langext.Ptr(240)).Msg(ee.FormatLog(LogPrintShort))
+}
+
+// RecursiveMessage returns the message to show
+// = first error (top-down) that is not wrapping/foreign/empty
+// = lowest level error (that is not empty)
+// = fallback to self.message
+func (ee *ExErr) RecursiveMessage() string {
+
+	// ==== [1] ==== first error (top-down) that is not wrapping/foreign/empty
+
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Message != "" && curr.Category != CatWrap && curr.Category != CatForeign {
+			return curr.Message
+		}
+	}
+
+	// ==== [2] ==== lowest level error (that is not empty)
+
+	deepestMsg := ""
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Message != "" {
+			deepestMsg = curr.Message
+		}
+	}
+	if deepestMsg != "" {
+		return deepestMsg
+	}
+
+	// ==== [3] ==== fallback to self.message
+
+	return ee.Message
+}
+
+// RecursiveType returns the statuscode to use
+// = first error (top-down) that is not wrapping/empty
+func (ee *ExErr) RecursiveType() ErrorType {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Type != TypeWrap {
+			return curr.Type
+		}
+
+	}
+
+	// fallback to self
+	return ee.Type
+}
+
+// RecursiveStatuscode returns the HTTP Statuscode to use
+// = first error (top-down) that has a statuscode set
+func (ee *ExErr) RecursiveStatuscode() *int {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.StatusCode != nil {
+			return langext.Ptr(*curr.StatusCode)
+		}
+	}
+
+	return nil
+}
+
+// RecursiveCategory returns the ErrorCategory to use
+// = first error (top-down) that has a statuscode set
+func (ee *ExErr) RecursiveCategory() ErrorCategory {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.Category != CatWrap {
+			return curr.Category
+		}
+	}
+
+	// fallback to <empty>
+	return ee.Category
+}
+
+// RecursiveMeta searches (top-down) for teh first error that has a meta value with teh specified key
+// and returns its value (or nil)
+func (ee *ExErr) RecursiveMeta(key string) *MetaValue {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if metaval, ok := curr.Meta[key]; ok {
+			return langext.Ptr(metaval)
+		}
+	}
+
+	return nil
+}
+
+// Depth returns the depth of recursively contained errors
+func (ee *ExErr) Depth() int {
+	if ee.OriginalError == nil {
+		return 1
+	} else {
+		return ee.OriginalError.Depth() + 1
+	}
+}
+
+// GetMeta returns the meta value with the specified key
+// this method recurses through all wrapped errors and returns the first matching meta value
+func (ee *ExErr) GetMeta(key string) (any, bool) {
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if v, ok := curr.Meta[key]; ok {
+			return v.Value, true
+		}
+	}
+
+	return nil, false
+}
+
+// GetMetaString functions the same as GetMeta, but returns false if the type does not match
+func (ee *ExErr) GetMetaString(key string) (string, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(string); ok {
+			return v2, true
+		}
+	}
+	return "", false
+}
+
+func (ee *ExErr) GetMetaBool(key string) (bool, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(bool); ok {
+			return v2, true
+		}
+	}
+	return false, false
+}
+
+func (ee *ExErr) GetMetaInt(key string) (int, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(int); ok {
+			return v2, true
+		}
+	}
+	return 0, false
+}
+
+func (ee *ExErr) GetMetaFloat32(key string) (float32, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(float32); ok {
+			return v2, true
+		}
+	}
+	return 0, false
+}
+
+func (ee *ExErr) GetMetaFloat64(key string) (float64, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(float64); ok {
+			return v2, true
+		}
+	}
+	return 0, false
+}
+
+func (ee *ExErr) GetMetaTime(key string) (time.Time, bool) {
+	if v1, ok := ee.GetMeta(key); ok {
+		if v2, ok := v1.(time.Time); ok {
+			return v2, true
+		}
+	}
+	return time.Time{}, false
+}
+
+// contains test if the supplied error is contained in this error (anywhere in the chain)
+func (ee *ExErr) contains(original *ExErr) (*ExErr, bool) {
+	if original == nil {
+		return nil, false
+	}
+
+	if ee == original {
+		return ee, true
+	}
+
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		if curr.equalsDirectProperties(curr) {
+			return curr, true
+		}
+	}
+
+	return nil, false
+}
+
+// equalsDirectProperties tests if ee and other are equals, but only looks at primary properties (not `OriginalError` or `Meta`)
+func (ee *ExErr) equalsDirectProperties(other *ExErr) bool {
+
+	if ee.UniqueID != other.UniqueID {
+		return false
+	}
+	if ee.Timestamp != other.Timestamp {
+		return false
+	}
+	if ee.Category != other.Category {
+		return false
+	}
+	if ee.Severity != other.Severity {
+		return false
+	}
+	if ee.Type != other.Type {
+		return false
+	}
+	if ee.StatusCode != other.StatusCode {
+		return false
+	}
+	if ee.Message != other.Message {
+		return false
+	}
+	if ee.WrappedErrType != other.WrappedErrType {
+		return false
+	}
+	if ee.Caller != other.Caller {
+		return false
+	}
+
+	return true
+}
+
+func newID() string {
+	return xid.New().String()
+}

exerr/exerr_test.go

@@ -0,0 +1,93 @@
+package exerr
+
+import (
+	"errors"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+type golangErr struct {
+	Message string
+}
+
+func (g golangErr) Error() string {
+	return g.Message
+}
+
+type golangErr2 struct {
+	Message string
+}
+
+func (g golangErr2) Error() string {
+	return g.Message
+}
+
+type simpleError struct {
+}
+
+func (g simpleError) Error() string {
+	return "Something simple went wroong"
+}
+
+type simpleError2 struct {
+}
+
+func (g simpleError2) Error() string {
+	return "Something simple went wroong"
+}
+
+func TestExErrIs1(t *testing.T) {
+	e0 := simpleError{}
+
+	wrap := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	tst.AssertTrue(t, errors.Is(wrap, simpleError{}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{"error1"}))
+}
+
+func TestExErrIs2(t *testing.T) {
+	e0 := golangErr{"error1"}
+
+	wrap := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	tst.AssertTrue(t, errors.Is(wrap, e0))
+	tst.AssertTrue(t, errors.Is(wrap, golangErr{"error1"}))
+	tst.AssertFalse(t, errors.Is(wrap, golangErr{"error2"}))
+	tst.AssertFalse(t, errors.Is(wrap, simpleError{}))
+}
+
+func TestExErrAs(t *testing.T) {
+
+	e0 := golangErr{"error1"}
+
+	w0 := Wrap(e0, "something went wrong").Str("test", "123").Build()
+
+	{
+		out := golangErr{}
+		ok := errors.As(w0, &out)
+		tst.AssertTrue(t, ok)
+		tst.AssertEqual(t, out.Message, "error1")
+	}
+
+	w1 := Wrap(w0, "outher error").Build()
+
+	{
+		out := golangErr{}
+		ok := errors.As(w1, &out)
+		tst.AssertTrue(t, ok)
+		tst.AssertEqual(t, out.Message, "error1")
+	}
+
+	{
+		out := golangErr2{}
+		ok := errors.As(w1, &out)
+		tst.AssertFalse(t, ok)
+	}
+
+	{
+		out := simpleError2{}
+		ok := errors.As(w1, &out)
+		tst.AssertFalse(t, ok)
+	}
+}

exerr/gin.go

@@ -0,0 +1,125 @@
+package exerr
+
+import (
+	"github.com/gin-gonic/gin"
+	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+	"time"
+)
+
+func (ee *ExErr) toJson(depth int, applyExtendListener bool, outputMeta bool) langext.H {
+	ginJson := langext.H{}
+
+	if ee.UniqueID != "" {
+		ginJson["id"] = ee.UniqueID
+	}
+	if ee.Category != CatWrap {
+		ginJson["category"] = ee.Category
+	}
+	if ee.Type != TypeWrap {
+		ginJson["type"] = ee.Type
+	}
+	if ee.StatusCode != nil {
+		ginJson["statuscode"] = ee.StatusCode
+	}
+	if ee.Message != "" {
+		ginJson["message"] = ee.Message
+	}
+	if ee.Caller != "" {
+		ginJson["caller"] = ee.Caller
+	}
+	if ee.Severity != SevErr {
+		ginJson["severity"] = ee.Severity
+	}
+	if ee.Timestamp != (time.Time{}) {
+		ginJson["time"] = ee.Timestamp.Format(time.RFC3339)
+	}
+	if ee.WrappedErrType != "" {
+		ginJson["wrappedErrType"] = ee.WrappedErrType
+	}
+	if ee.OriginalError != nil {
+		ginJson["original"] = ee.OriginalError.toJson(depth+1, applyExtendListener, outputMeta)
+	}
+
+	if outputMeta {
+		metaJson := langext.H{}
+		for metaKey, metaVal := range ee.Meta {
+			metaJson[metaKey] = metaVal.rawValueForJson()
+		}
+		ginJson["meta"] = metaJson
+	}
+
+	if applyExtendListener {
+		pkgconfig.ExtendGinDataOutput(ee, depth, ginJson)
+	}
+
+	return ginJson
+}
+
+func (ee *ExErr) ToDefaultAPIJson() (string, error) {
+
+	gjr := json.GoJsonRender{Data: ee.ToAPIJson(true, pkgconfig.ExtendedGinOutput, pkgconfig.IncludeMetaInGinOutput), NilSafeSlices: true, NilSafeMaps: true}
+
+	r, err := gjr.RenderString()
+
+	if err != nil {
+		return "", err
+	}
+
+	return r, nil
+}
+
+// ToAPIJson converts the ExError to a json object
+// (the same object as used in the Output(gin) method)
+//
+// Parameters:
+//   - [applyExtendListener]:  if false the pkgconfig.ExtendGinOutput / pkgconfig.ExtendGinDataOutput will not be applied
+//   - [includeWrappedErrors]: if false we do not include the recursive/wrapped errors in `__data`
+//   - [includeMetaFields]:    if true  we also include meta-values (aka from `.Str(key, value).Build()`), needs includeWrappedErrors=true
+func (ee *ExErr) ToAPIJson(applyExtendListener bool, includeWrappedErrors bool, includeMetaFields bool) langext.H {
+
+	apiOutput := langext.H{
+		"errorid":   ee.UniqueID,
+		"message":   ee.RecursiveMessage(),
+		"errorcode": ee.RecursiveType().Key,
+		"category":  ee.RecursiveCategory().Category,
+	}
+
+	if includeWrappedErrors {
+		apiOutput["__data"] = ee.toJson(0, applyExtendListener, includeMetaFields)
+	}
+
+	if applyExtendListener {
+		pkgconfig.ExtendGinOutput(ee, apiOutput)
+	}
+
+	return apiOutput
+}
+
+func (ee *ExErr) Output(g *gin.Context) {
+
+	warnOnPkgConfigNotInitialized()
+
+	var statuscode = http.StatusInternalServerError
+
+	var baseCat = ee.RecursiveCategory()
+	var baseType = ee.RecursiveType()
+	var baseStatuscode = ee.RecursiveStatuscode()
+
+	if baseCat == CatUser {
+		statuscode = http.StatusBadRequest
+	} else if baseCat == CatSystem {
+		statuscode = http.StatusInternalServerError
+	}
+
+	if baseStatuscode != nil {
+		statuscode = *ee.StatusCode
+	} else if baseType.DefaultStatusCode != nil {
+		statuscode = *baseType.DefaultStatusCode
+	}
+
+	ginOutput := ee.ToAPIJson(true, pkgconfig.ExtendedGinOutput, pkgconfig.IncludeMetaInGinOutput)
+
+	g.Render(statuscode, json.GoJsonRender{Data: ginOutput, NilSafeSlices: true, NilSafeMaps: true})
+}

exerr/helper.go

@@ -0,0 +1,88 @@
+package exerr
+
+import "fmt"
+
+// IsType test if the supplied error is of the specified ErrorType.
+func IsType(err error, errType ErrorType) bool {
+	if err == nil {
+		return false
+	}
+
+	bmerr := FromError(err)
+	for bmerr != nil {
+		if bmerr.Type == errType {
+			return true
+		}
+		bmerr = bmerr.OriginalError
+	}
+
+	return false
+}
+
+// IsFrom test if the supplied error stems originally from original
+func IsFrom(e error, original error) bool {
+	if e == nil {
+		return false
+	}
+
+	//goland:noinspection GoDirectComparisonOfErrors
+	if e == original {
+		return true
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if curr.Category == CatForeign && curr.Message == original.Error() && curr.WrappedErrType == fmt.Sprintf("%T", original) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// HasSourceMessage tests if the supplied error stems originally from an error with the message msg
+func HasSourceMessage(e error, msg string) bool {
+	if e == nil {
+		return false
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if curr.OriginalError == nil && curr.Message == msg {
+			return true
+		}
+	}
+
+	return false
+}
+
+func MessageMatch(e error, matcher func(string) bool) bool {
+	if e == nil {
+		return false
+	}
+
+	if matcher(e.Error()) {
+		return true
+	}
+
+	bmerr := FromError(e)
+	for bmerr == nil {
+		return false
+	}
+
+	for curr := bmerr; curr != nil; curr = curr.OriginalError {
+		if matcher(curr.Message) {
+			return true
+		}
+	}
+
+	return false
+}

exerr/listener.go

@@ -0,0 +1,37 @@
+package exerr
+
+import (
+	"sync"
+)
+
+type Method string
+
+const (
+	MethodOutput Method = "OUTPUT"
+	MethodPrint  Method = "PRINT"
+	MethodBuild  Method = "BUILD"
+	MethodFatal  Method = "FATAL"
+)
+
+type Listener = func(method Method, v *ExErr)
+
+var listenerLock = sync.Mutex{}
+var listener = make([]Listener, 0)
+
+func RegisterListener(l Listener) {
+	listenerLock.Lock()
+	defer listenerLock.Unlock()
+
+	listener = append(listener, l)
+}
+
+func (b *Builder) CallListener(m Method) {
+	valErr := b.errorData
+
+	listenerLock.Lock()
+	defer listenerLock.Unlock()
+
+	for _, v := range listener {
+		v(m, valErr)
+	}
+}

exerr/meta.go

@@ -0,0 +1,736 @@
+package exerr
+
+import (
+	"encoding/hex"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/rs/zerolog"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// This is a buffed up map[string]any
+// we also save type information of the map-values
+// which allows us to deserialize them back into te correct types later
+
+type MetaMap map[string]MetaValue
+
+type metaDataType string
+
+const (
+	MDTString      metaDataType = "String"
+	MDTStringPtr   metaDataType = "StringPtr"
+	MDTInt         metaDataType = "Int"
+	MDTInt8        metaDataType = "Int8"
+	MDTInt16       metaDataType = "Int16"
+	MDTInt32       metaDataType = "Int32"
+	MDTInt64       metaDataType = "Int64"
+	MDTFloat32     metaDataType = "Float32"
+	MDTFloat64     metaDataType = "Float64"
+	MDTBool        metaDataType = "Bool"
+	MDTBytes       metaDataType = "Bytes"
+	MDTObjectID    metaDataType = "ObjectID"
+	MDTTime        metaDataType = "Time"
+	MDTDuration    metaDataType = "Duration"
+	MDTStringArray metaDataType = "StringArr"
+	MDTIntArray    metaDataType = "IntArr"
+	MDTInt32Array  metaDataType = "Int32Arr"
+	MDTID          metaDataType = "ID"
+	MDTAny         metaDataType = "Interface"
+	MDTNil         metaDataType = "Nil"
+	MDTEnum        metaDataType = "Enum"
+)
+
+type MetaValue struct {
+	DataType metaDataType `json:"dataType"`
+	Value    interface{}  `json:"value"`
+}
+
+type metaValueSerialization struct {
+	DataType metaDataType `bson:"dataType"`
+	Value    string       `bson:"value"`
+	Raw      interface{}  `bson:"raw"`
+}
+
+func (v MetaValue) SerializeValue() (string, error) {
+	switch v.DataType {
+	case MDTString:
+		return v.Value.(string), nil
+	case MDTID:
+		return v.Value.(IDWrap).Serialize(), nil
+	case MDTAny:
+		return v.Value.(AnyWrap).Serialize(), nil
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r := v.Value.(*string)
+		if r != nil {
+			return "*" + *r, nil
+		} else {
+			return "#", nil
+		}
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int)), nil
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10), nil
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10), nil
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10), nil
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10), nil
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'X', -1, 32), nil
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'X', -1, 64), nil
+	case MDTBool:
+		if v.Value.(bool) {
+			return "true", nil
+		} else {
+			return "false", nil
+		}
+	case MDTBytes:
+		return hex.EncodeToString(v.Value.([]byte)), nil
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex(), nil
+	case MDTTime:
+		return strconv.FormatInt(v.Value.(time.Time).Unix(), 10) + "|" + strconv.FormatInt(int64(v.Value.(time.Time).Nanosecond()), 10), nil
+	case MDTDuration:
+		return v.Value.(time.Duration).String(), nil
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]string))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]int))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "#", nil
+		}
+		r, err := json.Marshal(v.Value.([]int32))
+		if err != nil {
+			return "", err
+		}
+		return string(r), nil
+	case MDTNil:
+		return "", nil
+	case MDTEnum:
+		return v.Value.(EnumWrap).Serialize(), nil
+	}
+	return "", errors.New("Unknown type: " + string(v.DataType))
+}
+
+func (v MetaValue) ShortString(lim int) string {
+	switch v.DataType {
+	case MDTString:
+		r := strings.ReplaceAll(v.Value.(string), "\r", "")
+		r = strings.ReplaceAll(r, "\n", "\\n")
+		r = strings.ReplaceAll(r, "\t", "\\t")
+		return langext.StrLimit(r, lim, "...")
+	case MDTID:
+		return v.Value.(IDWrap).String()
+	case MDTAny:
+		return v.Value.(AnyWrap).String()
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r := langext.CoalesceString(v.Value.(*string), "<<null>>")
+		r = strings.ReplaceAll(r, "\r", "")
+		r = strings.ReplaceAll(r, "\n", "\\n")
+		r = strings.ReplaceAll(r, "\t", "\\t")
+		return langext.StrLimit(r, lim, "...")
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int))
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10)
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10)
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10)
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10)
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
+	case MDTBool:
+		return fmt.Sprintf("%v", v.Value.(bool))
+	case MDTBytes:
+		return langext.StrLimit(hex.EncodeToString(v.Value.([]byte)), lim, "...")
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex()
+	case MDTTime:
+		return v.Value.(time.Time).Format(time.RFC3339)
+	case MDTDuration:
+		return v.Value.(time.Duration).String()
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]string))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]int))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.Marshal(v.Value.([]int32))
+		if err != nil {
+			return "(err)"
+		}
+		return langext.StrLimit(string(r), lim, "...")
+	case MDTNil:
+		return "<<null>>"
+	case MDTEnum:
+		return v.Value.(EnumWrap).String()
+	}
+	return "(err)"
+}
+
+func (v MetaValue) Apply(key string, evt *zerolog.Event, limitLen *int) *zerolog.Event {
+	switch v.DataType {
+	case MDTString:
+		if limitLen == nil {
+			return evt.Str(key, v.Value.(string))
+		} else {
+			return evt.Str(key, langext.StrLimit(v.Value.(string), *limitLen, "..."))
+		}
+	case MDTID:
+		return evt.Str(key, v.Value.(IDWrap).Value)
+	case MDTAny:
+		if v.Value.(AnyWrap).IsError {
+			return evt.Str(key, "(err)")
+		} else {
+			if limitLen == nil {
+				return evt.Str(key, v.Value.(AnyWrap).Json)
+			} else {
+				return evt.Str(key, langext.StrLimit(v.Value.(AnyWrap).Json, *limitLen, "..."))
+			}
+		}
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return evt.Str(key, "<<null>>")
+		}
+		if limitLen == nil {
+			return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<null>>"))
+		} else {
+			return evt.Str(key, langext.StrLimit(langext.CoalesceString(v.Value.(*string), "<<null>>"), *limitLen, "..."))
+		}
+	case MDTInt:
+		return evt.Int(key, v.Value.(int))
+	case MDTInt8:
+		return evt.Int8(key, v.Value.(int8))
+	case MDTInt16:
+		return evt.Int16(key, v.Value.(int16))
+	case MDTInt32:
+		return evt.Int32(key, v.Value.(int32))
+	case MDTInt64:
+		return evt.Int64(key, v.Value.(int64))
+	case MDTFloat32:
+		return evt.Float32(key, v.Value.(float32))
+	case MDTFloat64:
+		return evt.Float64(key, v.Value.(float64))
+	case MDTBool:
+		return evt.Bool(key, v.Value.(bool))
+	case MDTBytes:
+		return evt.Bytes(key, v.Value.([]byte))
+	case MDTObjectID:
+		return evt.Str(key, v.Value.(primitive.ObjectID).Hex())
+	case MDTTime:
+		return evt.Time(key, v.Value.(time.Time))
+	case MDTDuration:
+		return evt.Dur(key, v.Value.(time.Duration))
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return evt.Strs(key, nil)
+		}
+		return evt.Strs(key, v.Value.([]string))
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return evt.Ints(key, nil)
+		}
+		return evt.Ints(key, v.Value.([]int))
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return evt.Ints32(key, nil)
+		}
+		return evt.Ints32(key, v.Value.([]int32))
+	case MDTNil:
+		return evt.Str(key, "<<null>>")
+	case MDTEnum:
+		if v.Value.(EnumWrap).IsNil {
+			return evt.Any(key, nil)
+		} else if v.Value.(EnumWrap).ValueRaw != nil {
+			return evt.Any(key, v.Value.(EnumWrap).ValueRaw)
+		} else {
+			return evt.Str(key, v.Value.(EnumWrap).ValueString)
+		}
+	}
+	return evt.Str(key, "(err)")
+}
+
+func (v MetaValue) MarshalJSON() ([]byte, error) {
+	str, err := v.SerializeValue()
+	if err != nil {
+		return nil, err
+	}
+	return json.Marshal(string(v.DataType) + ":" + str)
+}
+
+func (v *MetaValue) UnmarshalJSON(data []byte) error {
+	var str = ""
+	err := json.Unmarshal(data, &str)
+	if err != nil {
+		return err
+	}
+
+	split := strings.SplitN(str, ":", 2)
+	if len(split) != 2 {
+		return errors.New("failed to decode MetaValue: '" + str + "'")
+	}
+
+	return v.Deserialize(split[1], metaDataType(split[0]))
+}
+
+func (v MetaValue) MarshalBSON() ([]byte, error) {
+	serval, err := v.SerializeValue()
+	if err != nil {
+		return nil, Wrap(err, "failed to bson-marshal MetaValue (serialize)").Build()
+	}
+
+	// this is an kinda ugly hack - but serialization to mongodb and back can loose the correct type information....
+	bin, err := bson.Marshal(metaValueSerialization{
+		DataType: v.DataType,
+		Value:    serval,
+		Raw:      v.Value,
+	})
+	if err != nil {
+		return nil, Wrap(err, "failed to bson-marshal MetaValue (marshal)").Build()
+	}
+
+	return bin, nil
+}
+
+func (v *MetaValue) UnmarshalBSON(bytes []byte) error {
+	var serval metaValueSerialization
+	err := bson.Unmarshal(bytes, &serval)
+	if err != nil {
+		return Wrap(err, "failed to bson-unmarshal MetaValue (unmarshal)").Build()
+	}
+
+	err = v.Deserialize(serval.Value, serval.DataType)
+	if err != nil {
+		return Wrap(err, "failed to deserialize MetaValue from bson").Str("raw", serval.Value).Build()
+	}
+
+	return nil
+}
+
+func (v *MetaValue) Deserialize(value string, datatype metaDataType) error {
+	switch datatype {
+	case MDTString:
+		v.Value = value
+		v.DataType = datatype
+		return nil
+	case MDTID:
+		v.Value = deserializeIDWrap(value)
+		v.DataType = datatype
+		return nil
+	case MDTAny:
+		v.Value = deserializeAnyWrap(value)
+		v.DataType = datatype
+		return nil
+	case MDTStringPtr:
+		if len(value) <= 0 || (value[0] != '*' && value[0] != '#') {
+			return errors.New("Invalid StringPtr: " + value)
+		} else if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		} else {
+			v.Value = langext.Ptr(value[1:])
+			v.DataType = datatype
+			return nil
+		}
+	case MDTInt:
+		pv, err := strconv.ParseInt(value, 10, 0)
+		if err != nil {
+			return err
+		}
+		v.Value = int(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt8:
+		pv, err := strconv.ParseInt(value, 10, 8)
+		if err != nil {
+			return err
+		}
+		v.Value = int8(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt16:
+		pv, err := strconv.ParseInt(value, 10, 16)
+		if err != nil {
+			return err
+		}
+		v.Value = int16(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt32:
+		pv, err := strconv.ParseInt(value, 10, 32)
+		if err != nil {
+			return err
+		}
+		v.Value = int32(pv)
+		v.DataType = datatype
+		return nil
+	case MDTInt64:
+		pv, err := strconv.ParseInt(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = pv
+		v.DataType = datatype
+		return nil
+	case MDTFloat32:
+		pv, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = float32(pv)
+		v.DataType = datatype
+		return nil
+	case MDTFloat64:
+		pv, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		v.Value = pv
+		v.DataType = datatype
+		return nil
+	case MDTBool:
+		if value == "true" {
+			v.Value = true
+			v.DataType = datatype
+			return nil
+		}
+		if value == "false" {
+			v.Value = false
+			v.DataType = datatype
+			return nil
+		}
+		return errors.New("invalid bool value: " + value)
+	case MDTBytes:
+		r, err := hex.DecodeString(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTObjectID:
+		r, err := primitive.ObjectIDFromHex(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTTime:
+		ps := strings.Split(value, "|")
+		if len(ps) != 2 {
+			return errors.New("invalid time.time: " + value)
+		}
+		p1, err := strconv.ParseInt(ps[0], 10, 64)
+		if err != nil {
+			return err
+		}
+		p2, err := strconv.ParseInt(ps[1], 10, 32)
+		if err != nil {
+			return err
+		}
+		v.Value = time.Unix(p1, p2)
+		v.DataType = datatype
+		return nil
+	case MDTDuration:
+		r, err := time.ParseDuration(value)
+		if err != nil {
+			return err
+		}
+		v.Value = r
+		v.DataType = datatype
+		return nil
+	case MDTStringArray:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]string, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTIntArray:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]int, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTInt32Array:
+		if value == "#" {
+			v.Value = nil
+			v.DataType = datatype
+			return nil
+		}
+		pj := make([]int32, 0)
+		err := json.Unmarshal([]byte(value), &pj)
+		if err != nil {
+			return err
+		}
+		v.Value = pj
+		v.DataType = datatype
+		return nil
+	case MDTNil:
+		v.Value = nil
+		v.DataType = datatype
+		return nil
+	case MDTEnum:
+		v.Value = deserializeEnumWrap(value)
+		v.DataType = datatype
+		return nil
+	}
+	return errors.New("Unknown type: " + string(datatype))
+}
+
+func (v MetaValue) ValueString() string {
+	switch v.DataType {
+	case MDTString:
+		return v.Value.(string)
+	case MDTID:
+		return v.Value.(IDWrap).String()
+	case MDTAny:
+		return v.Value.(AnyWrap).String()
+	case MDTStringPtr:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		return langext.CoalesceString(v.Value.(*string), "<<null>>")
+	case MDTInt:
+		return strconv.Itoa(v.Value.(int))
+	case MDTInt8:
+		return strconv.FormatInt(int64(v.Value.(int8)), 10)
+	case MDTInt16:
+		return strconv.FormatInt(int64(v.Value.(int16)), 10)
+	case MDTInt32:
+		return strconv.FormatInt(int64(v.Value.(int32)), 10)
+	case MDTInt64:
+		return strconv.FormatInt(v.Value.(int64), 10)
+	case MDTFloat32:
+		return strconv.FormatFloat(float64(v.Value.(float32)), 'g', 4, 32)
+	case MDTFloat64:
+		return strconv.FormatFloat(v.Value.(float64), 'g', 4, 64)
+	case MDTBool:
+		return fmt.Sprintf("%v", v.Value.(bool))
+	case MDTBytes:
+		return hex.EncodeToString(v.Value.([]byte))
+	case MDTObjectID:
+		return v.Value.(primitive.ObjectID).Hex()
+	case MDTTime:
+		return v.Value.(time.Time).Format(time.RFC3339Nano)
+	case MDTDuration:
+		return v.Value.(time.Duration).String()
+	case MDTStringArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]string), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTIntArray:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]int), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTInt32Array:
+		if langext.IsNil(v.Value) {
+			return "<<null>>"
+		}
+		r, err := json.MarshalIndent(v.Value.([]int32), "", "  ")
+		if err != nil {
+			return "(err)"
+		}
+		return string(r)
+	case MDTNil:
+		return "<<null>>"
+	case MDTEnum:
+		return v.Value.(EnumWrap).String()
+	}
+	return "(err)"
+}
+
+// rawValueForJson returns most-of-the-time the `Value` field
+// but for some datatyes we do special processing
+// all, so we can pluck the output value in json.Marshal without any suprises
+func (v MetaValue) rawValueForJson() any {
+	if v.DataType == MDTAny {
+		if v.Value.(AnyWrap).IsNil {
+			return nil
+		}
+		if v.Value.(AnyWrap).IsError {
+			return bson.M{"@error": true}
+		}
+		jsonobj := primitive.M{}
+		jsonarr := primitive.A{}
+		if err := json.Unmarshal([]byte(v.Value.(AnyWrap).Json), &jsonobj); err == nil {
+			return jsonobj
+		} else if err := json.Unmarshal([]byte(v.Value.(AnyWrap).Json), &jsonarr); err == nil {
+			return jsonarr
+		} else {
+			return bson.M{"type": v.Value.(AnyWrap).Type, "data": v.Value.(AnyWrap).Json}
+		}
+	}
+	if v.DataType == MDTID {
+		if v.Value.(IDWrap).IsNil {
+			return nil
+		}
+		return v.Value.(IDWrap).Value
+	}
+	if v.DataType == MDTBytes {
+		return hex.EncodeToString(v.Value.([]byte))
+	}
+	if v.DataType == MDTDuration {
+		return v.Value.(time.Duration).String()
+	}
+	if v.DataType == MDTTime {
+		return v.Value.(time.Time).Format(time.RFC3339Nano)
+	}
+	if v.DataType == MDTObjectID {
+		return v.Value.(primitive.ObjectID).Hex()
+	}
+	if v.DataType == MDTNil {
+		return nil
+	}
+	if v.DataType == MDTEnum {
+		if v.Value.(EnumWrap).IsNil {
+			return nil
+		}
+		if v.Value.(EnumWrap).ValueRaw != nil {
+			return v.Value.(EnumWrap).ValueRaw
+		}
+		return v.Value.(EnumWrap).ValueString
+	}
+	return v.Value
+}
+
+func (mm MetaMap) FormatOneLine(singleMaxLen int) string {
+	r := ""
+
+	i := 0
+	for key, val := range mm {
+		if i > 0 {
+			r += ", "
+		}
+
+		r += "\"" + key + "\""
+		r += ": "
+		r += "\"" + val.ShortString(singleMaxLen) + "\""
+
+		i++
+	}
+
+	return r
+}
+
+func (mm MetaMap) FormatMultiLine(indentFront string, indentKeys string, maxLenValue int) string {
+	r := ""
+
+	r += indentFront + "{" + "\n"
+	for key, val := range mm {
+		if key == "gin.body" {
+			continue
+		}
+
+		r += indentFront
+		r += indentKeys
+		r += "\"" + key + "\""
+		r += ": "
+		r += "\"" + val.ShortString(maxLenValue) + "\""
+		r += ",\n"
+	}
+	r += indentFront + "}"
+
+	return r
+}
+
+func (mm MetaMap) Any() bool {
+	return len(mm) > 0
+}
+
+func (mm MetaMap) Apply(evt *zerolog.Event, limitLen *int) *zerolog.Event {
+	for key, val := range mm {
+		evt = val.Apply(key, evt, limitLen)
+	}
+	return evt
+}
+
+func (mm MetaMap) add(key string, mdtype metaDataType, val interface{}) {
+	if _, ok := mm[key]; !ok {
+		mm[key] = MetaValue{DataType: mdtype, Value: val}
+		return
+	}
+	for i := 2; ; i++ {
+		realkey := key + "-" + strconv.Itoa(i)
+		if _, ok := mm[realkey]; !ok {
+			mm[realkey] = MetaValue{DataType: mdtype, Value: val}
+			return
+		}
+	}
+}

exerr/stacktrace.go

@@ -0,0 +1,14 @@
+package exerr
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func callername(skip int) string {
+	pc := make([]uintptr, 15)
+	n := runtime.Callers(skip+2, pc)
+	frames := runtime.CallersFrames(pc[:n])
+	frame, _ := frames.Next()
+	return fmt.Sprintf("%s:%d %s", frame.File, frame.Line, frame.Function)
+}

exerr/typeWrapper.go

@@ -0,0 +1,189 @@
+package exerr
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/enums"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"strings"
+)
+
+//
+// These are wrapper objects, because for some metadata-types we need to serialize a bit more complex data
+// (eg thy actual type for ID objects, or the json representation for any types)
+//
+
+type IDWrap struct {
+	Type  string
+	Value string
+	IsNil bool
+}
+
+func newIDWrap(val fmt.Stringer) IDWrap {
+	t := fmt.Sprintf("%T", val)
+	arr := strings.Split(t, ".")
+	if len(arr) > 0 {
+		t = arr[len(arr)-1]
+	}
+
+	if langext.IsNil(val) {
+		return IDWrap{Type: t, Value: "", IsNil: true}
+	}
+
+	v := val.String()
+	return IDWrap{Type: t, Value: v, IsNil: false}
+}
+
+func (w IDWrap) Serialize() string {
+	if w.IsNil {
+		return "!nil" + ":" + w.Type
+	}
+	return w.Type + ":" + w.Value
+}
+
+func (w IDWrap) String() string {
+	if w.IsNil {
+		return w.Type + "<<nil>>"
+	}
+	return w.Type + "(" + w.Value + ")"
+}
+
+func deserializeIDWrap(v string) IDWrap {
+	r := strings.SplitN(v, ":", 2)
+
+	if len(r) == 2 && r[0] == "!nil" {
+		return IDWrap{Type: r[1], Value: v, IsNil: true}
+	}
+
+	if len(r) == 0 {
+		return IDWrap{}
+	} else if len(r) == 1 {
+		return IDWrap{Type: "", Value: v, IsNil: false}
+	} else {
+		return IDWrap{Type: r[0], Value: r[1], IsNil: false}
+	}
+}
+
+type AnyWrap struct {
+	Type    string
+	Json    string
+	IsError bool
+	IsNil   bool
+}
+
+func newAnyWrap(val any) (result AnyWrap) {
+	result = AnyWrap{Type: "", Json: "", IsError: true, IsNil: false} // ensure a return in case of recover()
+
+	defer func() {
+		if err := recover(); err != nil {
+			// send error should never crash our program
+			log.Error().Interface("err", err).Msg("Panic while trying to marshal anywrap ( bmerror.Interface )")
+		}
+	}()
+
+	t := fmt.Sprintf("%T", val)
+
+	if langext.IsNil(val) {
+		return AnyWrap{Type: t, Json: "", IsError: false, IsNil: true}
+	}
+
+	j, err := json.Marshal(val)
+	if err == nil {
+		return AnyWrap{Type: t, Json: string(j), IsError: false, IsNil: false}
+	} else {
+		return AnyWrap{Type: t, Json: "", IsError: true, IsNil: false}
+	}
+}
+
+func (w AnyWrap) Serialize() string {
+	if w.IsError {
+		return "ERR" + ":" + w.Type + ":" + w.Json
+	} else if w.IsNil {
+		return "NIL" + ":" + w.Type + ":" + w.Json
+	} else {
+		return "OK" + ":" + w.Type + ":" + w.Json
+	}
+}
+
+func (w AnyWrap) String() string {
+	if w.IsError {
+		return "(error)"
+	} else if w.IsNil {
+		return "(nil)"
+	} else {
+		return w.Json
+	}
+}
+
+func deserializeAnyWrap(v string) AnyWrap {
+	r := strings.SplitN(v, ":", 3)
+	if len(r) != 3 {
+		return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
+	} else {
+		if r[0] == "OK" {
+			return AnyWrap{IsError: false, Type: r[1], Json: r[2], IsNil: false}
+		} else if r[0] == "ERR" {
+			return AnyWrap{IsError: true, Type: r[1], Json: r[2], IsNil: false}
+		} else if r[0] == "NIL" {
+			return AnyWrap{IsError: false, Type: r[1], Json: "", IsNil: true}
+		} else {
+			return AnyWrap{IsError: true, Type: "", Json: "", IsNil: false}
+		}
+	}
+}
+
+type EnumWrap struct {
+	Type        string
+	ValueString string
+	ValueRaw    enums.Enum // `ValueRaw` is lost during serialization roundtrip
+	IsNil       bool
+}
+
+func newEnumWrap(val enums.Enum) EnumWrap {
+	t := fmt.Sprintf("%T", val)
+	arr := strings.Split(t, ".")
+	if len(arr) > 0 {
+		t = arr[len(arr)-1]
+	}
+
+	if langext.IsNil(val) {
+		return EnumWrap{Type: t, ValueString: "", ValueRaw: val, IsNil: true}
+	}
+
+	if enumstr, ok := val.(enums.StringEnum); ok {
+		return EnumWrap{Type: t, ValueString: enumstr.String(), ValueRaw: val, IsNil: false}
+	}
+
+	return EnumWrap{Type: t, ValueString: fmt.Sprintf("%v", val), ValueRaw: val, IsNil: false}
+}
+
+func (w EnumWrap) Serialize() string {
+	if w.IsNil {
+		return "!nil" + ":" + w.Type
+	}
+	return w.Type + ":" + w.ValueString
+}
+
+func (w EnumWrap) String() string {
+	if w.IsNil {
+		return w.Type + "<<nil>>"
+	}
+	return "[" + w.Type + "] " + w.ValueString
+}
+
+func deserializeEnumWrap(v string) EnumWrap {
+	r := strings.SplitN(v, ":", 2)
+
+	if len(r) == 2 && r[0] == "!nil" {
+		return EnumWrap{Type: r[1], ValueString: v, ValueRaw: nil, IsNil: true}
+	}
+
+	if len(r) == 0 {
+		return EnumWrap{}
+	} else if len(r) == 1 {
+		return EnumWrap{Type: "", ValueString: v, ValueRaw: nil, IsNil: false}
+	} else {
+		return EnumWrap{Type: r[0], ValueString: r[1], ValueRaw: nil, IsNil: false}
+	}
+}

fsext/exists.go

@@ -0,0 +1,36 @@
+package fsext
+
+import "os"
+
+func PathExists(fp string) (bool, error) {
+	_, err := os.Stat(fp)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func FileExists(fp string) (bool, error) {
+	stat, err := os.Stat(fp)
+	if err == nil {
+		return !stat.IsDir(), nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func DirectoryExists(fp string) (bool, error) {
+	stat, err := os.Stat(fp)
+	if err == nil {
+		return stat.IsDir(), nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}

ginext/appContext.go

@@ -0,0 +1,59 @@
+package ginext
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+	"time"
+)
+
+type AppContext struct {
+	inner      context.Context
+	cancelFunc context.CancelFunc
+	cancelled  bool
+	GinContext *gin.Context
+}
+
+func CreateAppContext(g *gin.Context, innerCtx context.Context, cancelFn context.CancelFunc) *AppContext {
+	for key, value := range g.Keys {
+		innerCtx = context.WithValue(innerCtx, key, value)
+	}
+	return &AppContext{
+		inner:      innerCtx,
+		cancelFunc: cancelFn,
+		cancelled:  false,
+		GinContext: g,
+	}
+}
+
+func (ac *AppContext) Deadline() (deadline time.Time, ok bool) {
+	return ac.inner.Deadline()
+}
+
+func (ac *AppContext) Done() <-chan struct{} {
+	return ac.inner.Done()
+}
+
+func (ac *AppContext) Err() error {
+	return ac.inner.Err()
+}
+
+func (ac *AppContext) Value(key any) any {
+	return ac.inner.Value(key)
+}
+
+func (ac *AppContext) Set(key, value any) {
+	ac.inner = context.WithValue(ac.inner, key, value)
+}
+
+func (ac *AppContext) Cancel() {
+	ac.cancelled = true
+	ac.cancelFunc()
+}
+
+func (ac *AppContext) RequestURI() string {
+	if ac.GinContext != nil && ac.GinContext.Request != nil {
+		return ac.GinContext.Request.Method + " :: " + ac.GinContext.Request.RequestURI
+	} else {
+		return ""
+	}
+}

ginext/commonHandler.go

@@ -0,0 +1,23 @@
+package ginext
+
+import (
+	"net/http"
+)
+
+func RedirectFound(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusFound, newuri)
+	}
+}
+
+func RedirectTemporary(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusTemporaryRedirect, newuri)
+	}
+}
+
+func RedirectPermanent(newuri string) WHandlerFunc {
+	return func(pctx PreContext) HTTPResponse {
+		return Redirect(http.StatusPermanentRedirect, newuri)
+	}
+}

ginext/commonMiddlewares.go

@@ -0,0 +1,12 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+)
+
+func BodyBuffer(g *gin.Context) {
+	if g.Request.Body != nil {
+		g.Request.Body = dataext.NewBufferedReadCloser(g.Request.Body)
+	}
+}

ginext/cors.go

@@ -0,0 +1,21 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func CorsMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
+		c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
+		c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
+		c.Writer.Header().Set("Access-Control-Allow-Methods", "OPTIONS, GET, POST, PUT, PATCH, DELETE, COUNT")
+
+		if c.Request.Method == "OPTIONS" {
+			c.AbortWithStatus(http.StatusOK)
+		} else {
+			c.Next()
+		}
+	}
+}

ginext/engine.go

@@ -0,0 +1,187 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"net"
+	"net/http"
+	"regexp"
+	"strings"
+	"time"
+)
+
+type GinWrapper struct {
+	engine          *gin.Engine
+	SuppressGinLogs bool
+
+	allowCors             bool
+	ginDebug              bool
+	bufferBody            bool
+	requestTimeout        time.Duration
+	listenerBeforeRequest []func(g *gin.Context)
+	listenerAfterRequest  []func(g *gin.Context, resp HTTPResponse)
+
+	routeSpecs []ginRouteSpec
+}
+
+type ginRouteSpec struct {
+	Method      string
+	URL         string
+	Middlewares []string
+	Handler     string
+}
+
+type Options struct {
+	AllowCors             *bool                                     // Add cors handler to allow all CORS requests on the default http methods
+	GinDebug              *bool                                     // Set gin.debug to true (adds more logs)
+	BufferBody            *bool                                     // Buffers the input body stream, this way the ginext error handler can later include the whole request body
+	Timeout               *time.Duration                            // The default handler timeout
+	ListenerBeforeRequest []func(g *gin.Context)                    // Register listener that are called before the handler method
+	ListenerAfterRequest  []func(g *gin.Context, resp HTTPResponse) // Register listener that are called after the handler method
+}
+
+// NewEngine creates a new (wrapped) ginEngine
+func NewEngine(opt Options) *GinWrapper {
+	engine := gin.New()
+
+	wrapper := &GinWrapper{
+		engine:                engine,
+		SuppressGinLogs:       false,
+		allowCors:             langext.Coalesce(opt.AllowCors, false),
+		ginDebug:              langext.Coalesce(opt.GinDebug, true),
+		bufferBody:            langext.Coalesce(opt.BufferBody, false),
+		requestTimeout:        langext.Coalesce(opt.Timeout, 24*time.Hour),
+		listenerBeforeRequest: opt.ListenerBeforeRequest,
+		listenerAfterRequest:  opt.ListenerAfterRequest,
+	}
+
+	engine.RedirectFixedPath = false
+	engine.RedirectTrailingSlash = false
+
+	if wrapper.allowCors {
+		engine.Use(CorsMiddleware())
+	}
+
+	// do not debug-print routes
+	gin.DebugPrintRouteFunc = func(_, _, _ string, _ int) {}
+
+	if !wrapper.ginDebug {
+		gin.SetMode(gin.ReleaseMode)
+
+		ginlogger := gin.Logger()
+		engine.Use(func(context *gin.Context) {
+			if !wrapper.SuppressGinLogs {
+				ginlogger(context)
+			}
+		})
+	} else {
+		gin.SetMode(gin.DebugMode)
+	}
+
+	return wrapper
+}
+
+func (w *GinWrapper) ListenAndServeHTTP(addr string, postInit func(port string)) (chan error, *http.Server) {
+
+	w.DebugPrintRoutes()
+
+	httpserver := &http.Server{
+		Addr:    addr,
+		Handler: w.engine,
+	}
+
+	errChan := make(chan error)
+
+	go func() {
+
+		ln, err := net.Listen("tcp", httpserver.Addr)
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		_, port, err := net.SplitHostPort(ln.Addr().String())
+		if err != nil {
+			errChan <- err
+			return
+		}
+
+		log.Info().Str("address", httpserver.Addr).Msg("HTTP-Server started on http://localhost:" + port)
+
+		if postInit != nil {
+			postInit(port) // the net.Listener a few lines above is at this point actually already buffering requests
+		}
+
+		errChan <- httpserver.Serve(ln)
+	}()
+
+	return errChan, httpserver
+}
+
+func (w *GinWrapper) DebugPrintRoutes() {
+	if !w.ginDebug {
+		return
+	}
+
+	lines := make([][4]string, 0)
+
+	pad := [4]int{0, 0, 0, 0}
+
+	for _, spec := range w.routeSpecs {
+
+		line := [4]string{
+			spec.Method,
+			spec.URL,
+			strings.Join(langext.ArrMap(spec.Middlewares, w.cleanMiddlewareName), " -> "),
+			w.cleanMiddlewareName(spec.Handler),
+		}
+
+		lines = append(lines, line)
+
+		pad[0] = mathext.Max(pad[0], len(line[0]))
+		pad[1] = mathext.Max(pad[1], len(line[1]))
+		pad[2] = mathext.Max(pad[2], len(line[2]))
+		pad[3] = mathext.Max(pad[3], len(line[3]))
+	}
+
+	fmt.Printf("Gin-Routes:\n")
+	fmt.Printf("{\n")
+	for _, line := range lines {
+
+		fmt.Printf(" %s  %s  -->  %s  -->  %s\n",
+			langext.StrPadRight("["+line[0]+"]", " ", pad[0]+2),
+			langext.StrPadRight(line[1], " ", pad[1]),
+			langext.StrPadRight(line[2], " ", pad[2]),
+			langext.StrPadRight(line[3], " ", pad[3]))
+	}
+	fmt.Printf("}\n")
+}
+
+func (w *GinWrapper) cleanMiddlewareName(fname string) string {
+
+	funcSuffix := rext.W(regexp.MustCompile(`\.func[0-9]+(?:\.[0-9]+)*$`))
+	if match, ok := funcSuffix.MatchFirst(fname); ok {
+		fname = fname[:len(fname)-match.FullMatch().Length()]
+	}
+
+	if strings.HasSuffix(fname, ".(*GinRoutesWrapper).WithJSONFilter") {
+		fname = "[JSONFilter]"
+	}
+
+	if fname == "ginext.BodyBuffer" {
+		fname = "[BodyBuffer]"
+	}
+
+	skipPrefixes := []string{"api.(*Handler).", "api.", "ginext.", "handler.", "admin-app.", "employee-app.", "employer-app."}
+	for _, pfx := range skipPrefixes {
+		if strings.HasPrefix(fname, pfx) {
+			fname = fname[len(pfx):]
+		}
+	}
+
+	return fname
+}

ginext/funcWrapper.go

@@ -0,0 +1,60 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+)
+
+type WHandlerFunc func(PreContext) HTTPResponse
+
+func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
+
+	return func(g *gin.Context) {
+
+		reqctx := g.Request.Context()
+
+		pctx := PreContext{
+			wrapper:        w,
+			ginCtx:         g,
+			persistantData: &preContextData{},
+		}
+
+		for _, lstr := range w.listenerBeforeRequest {
+			lstr(g)
+		}
+
+		wrap, stackTrace, panicObj := callPanicSafe(fn, pctx)
+		if panicObj != nil {
+
+			fmt.Printf("\n======== ======== STACKTRACE ======== ========\n%s\n======== ======== ======== ========\n\n", stackTrace)
+
+			err := exerr.
+				New(exerr.TypePanic, "Panic occured (in gin handler)").
+				Any("panicObj", panicObj).
+				Str("trace", stackTrace).
+				Build()
+
+			wrap = Error(err)
+		}
+
+		if g.Writer.Written() {
+			panic("Writing in WrapperFunc is not supported")
+		}
+
+		if pctx.persistantData.sessionObj != nil {
+			err := pctx.persistantData.sessionObj.Finish(reqctx, wrap)
+			if err != nil {
+				wrap = Error(exerr.Wrap(err, "Failed to finish session").Any("originalResponse", wrap).Build())
+			}
+		}
+
+		for _, lstr := range w.listenerAfterRequest {
+			lstr(g, wrap)
+		}
+
+		if reqctx.Err() == nil {
+			wrap.Write(g)
+		}
+	}
+}

ginext/preContext.go

@@ -0,0 +1,190 @@
+package ginext
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"github.com/gin-gonic/gin/binding"
+	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"io"
+	"runtime/debug"
+	"time"
+)
+
+type PreContext struct {
+	ginCtx         *gin.Context
+	wrapper        *GinWrapper
+	uri            any
+	query          any
+	body           any
+	rawbody        *[]byte
+	form           any
+	header         any
+	timeout        *time.Duration
+	persistantData *preContextData // must be a ptr, so that we can get the values back in out Wrap func
+}
+
+type preContextData struct {
+	sessionObj SessionObject
+}
+
+func (pctx *PreContext) URI(uri any) *PreContext {
+	pctx.uri = uri
+	return pctx
+}
+
+func (pctx *PreContext) Query(query any) *PreContext {
+	pctx.query = query
+	return pctx
+}
+
+func (pctx *PreContext) Body(body any) *PreContext {
+	pctx.body = body
+	return pctx
+}
+
+func (pctx *PreContext) RawBody(rawbody *[]byte) *PreContext {
+	pctx.rawbody = rawbody
+	return pctx
+}
+
+func (pctx *PreContext) Form(form any) *PreContext {
+	pctx.form = form
+	return pctx
+}
+
+func (pctx *PreContext) Header(header any) *PreContext {
+	pctx.header = header
+	return pctx
+}
+
+func (pctx *PreContext) WithTimeout(to time.Duration) *PreContext {
+	pctx.timeout = &to
+	return pctx
+}
+
+func (pctx *PreContext) WithSession(sessionObj SessionObject) *PreContext {
+	pctx.persistantData.sessionObj = sessionObj
+	return pctx
+}
+
+func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
+	if pctx.uri != nil {
+		if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
+			err = exerr.Wrap(err, "Failed to read uri").
+				WithType(exerr.TypeBindFailURI).
+				Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.query != nil {
+		if err := pctx.ginCtx.ShouldBindQuery(pctx.query); err != nil {
+			err = exerr.Wrap(err, "Failed to read query").
+				WithType(exerr.TypeBindFailQuery).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.body != nil {
+		if pctx.ginCtx.ContentType() == "application/json" {
+			if err := pctx.ginCtx.ShouldBindJSON(pctx.body); err != nil {
+				err = exerr.Wrap(err, "Failed to read json-body").
+					WithType(exerr.TypeBindFailJSON).
+					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else {
+			err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.rawbody != nil {
+		if brc, ok := pctx.ginCtx.Request.Body.(dataext.BufferedReadCloser); ok {
+			v, err := brc.BufferedAll()
+			if err != nil {
+				return nil, nil, langext.Ptr(Error(err))
+			}
+			*pctx.rawbody = v
+		} else {
+			buf := &bytes.Buffer{}
+			_, err := io.Copy(buf, pctx.ginCtx.Request.Body)
+			if err != nil {
+				return nil, nil, langext.Ptr(Error(err))
+			}
+			*pctx.rawbody = buf.Bytes()
+		}
+	}
+
+	if pctx.form != nil {
+		if pctx.ginCtx.ContentType() == "multipart/form-data" {
+			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
+				err = exerr.Wrap(err, "Failed to read multipart-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else if pctx.ginCtx.ContentType() == "application/x-www-form-urlencoded" {
+			if err := pctx.ginCtx.ShouldBindWith(pctx.form, binding.Form); err != nil {
+				err = exerr.Wrap(err, "Failed to read urlencoded-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return nil, nil, langext.Ptr(Error(err))
+			}
+		} else {
+			err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
+				Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	if pctx.header != nil {
+		if err := pctx.ginCtx.ShouldBindHeader(pctx.header); err != nil {
+			err = exerr.Wrap(err, "Failed to read header").
+				WithType(exerr.TypeBindFailHeader).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return nil, nil, langext.Ptr(Error(err))
+		}
+	}
+
+	ictx, cancel := context.WithTimeout(context.Background(), langext.Coalesce(pctx.timeout, pctx.wrapper.requestTimeout))
+
+	if pctx.persistantData.sessionObj != nil {
+		err := pctx.persistantData.sessionObj.Init(pctx.ginCtx, ictx)
+		if err != nil {
+			cancel()
+			return nil, nil, langext.Ptr(Error(exerr.Wrap(err, "Failed to init session").Build()))
+		}
+	}
+
+	actx := CreateAppContext(pctx.ginCtx, ictx, cancel)
+
+	return actx, pctx.ginCtx, nil
+}
+
+func callPanicSafe(fn WHandlerFunc, pctx PreContext) (res HTTPResponse, stackTrace string, panicObj any) {
+	defer func() {
+		if rec := recover(); rec != nil {
+			res = nil
+			stackTrace = string(debug.Stack())
+			panicObj = rec
+		}
+	}()
+
+	res = fn(pctx)
+	return res, "", nil
+}

ginext/response.go

@@ -0,0 +1,412 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"os"
+)
+
+type headerval struct {
+	Key string
+	Val string
+}
+
+type HTTPResponse interface {
+	Write(g *gin.Context)
+	WithHeader(k string, v string) HTTPResponse
+	IsSuccess() bool
+}
+
+type InspectableHTTPResponse interface {
+	HTTPResponse
+
+	Statuscode() int
+	BodyString(g *gin.Context) *string
+	ContentType() string
+	Headers() []string
+}
+
+type jsonHTTPResponse struct {
+	statusCode int
+	data       any
+	headers    []headerval
+}
+
+func (j jsonHTTPResponse) jsonRenderer(g *gin.Context) json.GoJsonRender {
+	var f *string
+	if jsonfilter := g.GetString("goext.jsonfilter"); jsonfilter != "" {
+		f = &jsonfilter
+	}
+	return json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true, Filter: f}
+}
+
+func (j jsonHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Render(j.statusCode, j.jsonRenderer(g))
+}
+
+func (j jsonHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j jsonHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j jsonHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j jsonHTTPResponse) BodyString(g *gin.Context) *string {
+	if str, err := j.jsonRenderer(g).RenderString(); err == nil {
+		return &str
+	} else {
+		return nil
+	}
+}
+
+func (j jsonHTTPResponse) ContentType() string {
+	return "application/json"
+}
+
+func (j jsonHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type emptyHTTPResponse struct {
+	statusCode int
+	headers    []headerval
+}
+
+func (j emptyHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Status(j.statusCode)
+}
+
+func (j emptyHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j emptyHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j emptyHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j emptyHTTPResponse) BodyString(*gin.Context) *string {
+	return nil
+}
+
+func (j emptyHTTPResponse) ContentType() string {
+	return ""
+}
+
+func (j emptyHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type textHTTPResponse struct {
+	statusCode int
+	data       string
+	headers    []headerval
+}
+
+func (j textHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.String(j.statusCode, "%s", j.data)
+}
+
+func (j textHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j textHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j textHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j textHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(j.data)
+}
+
+func (j textHTTPResponse) ContentType() string {
+	return "text/plain"
+}
+
+func (j textHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type dataHTTPResponse struct {
+	statusCode  int
+	data        []byte
+	contentType string
+	headers     []headerval
+}
+
+func (j dataHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Data(j.statusCode, j.contentType, j.data)
+}
+
+func (j dataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j dataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j dataHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j dataHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(string(j.data))
+}
+
+func (j dataHTTPResponse) ContentType() string {
+	return j.contentType
+}
+
+func (j dataHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type fileHTTPResponse struct {
+	mimetype string
+	filepath string
+	filename *string
+	headers  []headerval
+}
+
+func (j fileHTTPResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
+	if j.filename != nil {
+		g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
+
+	}
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.File(j.filepath)
+}
+
+func (j fileHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j fileHTTPResponse) IsSuccess() bool {
+	return true
+}
+
+func (j fileHTTPResponse) Statuscode() int {
+	return 200
+}
+
+func (j fileHTTPResponse) BodyString(*gin.Context) *string {
+	data, err := os.ReadFile(j.filepath)
+	if err != nil {
+		return nil
+	}
+	return langext.Ptr(string(data))
+}
+
+func (j fileHTTPResponse) ContentType() string {
+	return j.mimetype
+}
+
+func (j fileHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type downloadDataHTTPResponse struct {
+	statusCode int
+	mimetype   string
+	data       []byte
+	filename   *string
+	headers    []headerval
+}
+
+func (j downloadDataHTTPResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
+	if j.filename != nil {
+		g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
+
+	}
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	g.Data(j.statusCode, j.mimetype, j.data)
+}
+
+func (j downloadDataHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j downloadDataHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j downloadDataHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j downloadDataHTTPResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr(string(j.data))
+}
+
+func (j downloadDataHTTPResponse) ContentType() string {
+	return j.mimetype
+}
+
+func (j downloadDataHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type redirectHTTPResponse struct {
+	statusCode int
+	url        string
+	headers    []headerval
+}
+
+func (j redirectHTTPResponse) Write(g *gin.Context) {
+	g.Redirect(j.statusCode, j.url)
+}
+
+func (j redirectHTTPResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j redirectHTTPResponse) IsSuccess() bool {
+	return j.statusCode >= 200 && j.statusCode <= 399
+}
+
+func (j redirectHTTPResponse) Statuscode() int {
+	return j.statusCode
+}
+
+func (j redirectHTTPResponse) BodyString(*gin.Context) *string {
+	return nil
+}
+
+func (j redirectHTTPResponse) ContentType() string {
+	return ""
+}
+
+func (j redirectHTTPResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+type jsonAPIErrResponse struct {
+	err     *exerr.ExErr
+	headers []headerval
+}
+
+func (j jsonAPIErrResponse) Write(g *gin.Context) {
+	j.err.Output(g)
+}
+
+func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j jsonAPIErrResponse) IsSuccess() bool {
+	return false
+}
+
+func (j jsonAPIErrResponse) Statuscode() int {
+	return langext.Coalesce(j.err.RecursiveStatuscode(), 0)
+}
+
+func (j jsonAPIErrResponse) BodyString(*gin.Context) *string {
+	if str, err := j.err.ToDefaultAPIJson(); err == nil {
+		return &str
+	} else {
+		return nil
+	}
+}
+
+func (j jsonAPIErrResponse) ContentType() string {
+	return "application/json"
+}
+
+func (j jsonAPIErrResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+func (j jsonAPIErrResponse) Unwrap() error {
+	return j.err
+}
+
+func Status(sc int) HTTPResponse {
+	return &emptyHTTPResponse{statusCode: sc}
+}
+
+func JSON(sc int, data any) HTTPResponse {
+	return &jsonHTTPResponse{statusCode: sc, data: data}
+}
+
+func Data(sc int, contentType string, data []byte) HTTPResponse {
+	return &dataHTTPResponse{statusCode: sc, contentType: contentType, data: data}
+}
+
+func Text(sc int, data string) HTTPResponse {
+	return &textHTTPResponse{statusCode: sc, data: data}
+}
+
+func File(mimetype string, filepath string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath}
+}
+
+func Download(mimetype string, filepath string, filename string) HTTPResponse {
+	return &fileHTTPResponse{mimetype: mimetype, filepath: filepath, filename: &filename}
+}
+
+func DownloadData(status int, mimetype string, filename string, data []byte) HTTPResponse {
+	return &downloadDataHTTPResponse{statusCode: status, mimetype: mimetype, data: data, filename: &filename}
+}
+
+func Redirect(sc int, newURL string) HTTPResponse {
+	return &redirectHTTPResponse{statusCode: sc, url: newURL}
+}
+
+func Error(e error) HTTPResponse {
+	return &jsonAPIErrResponse{
+		err: exerr.FromError(e),
+	}
+}
+
+func ErrWrap(e error, errorType exerr.ErrorType, msg string) HTTPResponse {
+	return &jsonAPIErrResponse{
+		err: exerr.FromError(exerr.Wrap(e, msg).WithType(errorType).Build()),
+	}
+}
+
+func NotImplemented() HTTPResponse {
+	return Error(exerr.New(exerr.TypeNotImplemented, "").Build())
+}

ginext/routes.go

@@ -0,0 +1,218 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"net/http"
+	"path"
+	"reflect"
+	"runtime"
+	"strings"
+)
+
+var anyMethods = []string{
+	http.MethodGet, http.MethodPost, http.MethodPut, http.MethodPatch,
+	http.MethodHead, http.MethodOptions, http.MethodDelete, http.MethodConnect,
+	http.MethodTrace,
+}
+
+type GinRoutesWrapper struct {
+	wrapper        *GinWrapper
+	routes         gin.IRouter
+	absPath        string
+	defaultHandler []gin.HandlerFunc
+}
+
+type GinRouteBuilder struct {
+	routes *GinRoutesWrapper
+
+	method   string
+	relPath  string
+	absPath  string
+	handlers []gin.HandlerFunc
+}
+
+func (w *GinWrapper) Routes() *GinRoutesWrapper {
+	return &GinRoutesWrapper{
+		wrapper:        w,
+		routes:         w.engine,
+		absPath:        "",
+		defaultHandler: make([]gin.HandlerFunc, 0),
+	}
+}
+
+func (w *GinRoutesWrapper) Group(relativePath string) *GinRoutesWrapper {
+	return &GinRoutesWrapper{
+		wrapper:        w.wrapper,
+		routes:         w.routes.Group(relativePath),
+		defaultHandler: langext.ArrCopy(w.defaultHandler),
+		absPath:        joinPaths(w.absPath, relativePath),
+	}
+}
+
+func (w *GinRoutesWrapper) Use(middleware ...gin.HandlerFunc) *GinRoutesWrapper {
+	defHandler := langext.ArrCopy(w.defaultHandler)
+	defHandler = append(defHandler, middleware...)
+	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes, defaultHandler: defHandler}
+}
+
+func (w *GinRoutesWrapper) WithJSONFilter(filter string) *GinRoutesWrapper {
+	defHandler := langext.ArrCopy(w.defaultHandler)
+	defHandler = append(defHandler, func(g *gin.Context) {
+		g.Set("goext.jsonfilter", filter)
+	})
+	return &GinRoutesWrapper{wrapper: w.wrapper, routes: w.routes, defaultHandler: defHandler}
+}
+
+func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodGet, relativePath)
+}
+
+func (w *GinRoutesWrapper) POST(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPost, relativePath)
+}
+
+func (w *GinRoutesWrapper) DELETE(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodDelete, relativePath)
+}
+
+func (w *GinRoutesWrapper) PATCH(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPatch, relativePath)
+}
+
+func (w *GinRoutesWrapper) PUT(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodPut, relativePath)
+}
+
+func (w *GinRoutesWrapper) OPTIONS(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodOptions, relativePath)
+}
+
+func (w *GinRoutesWrapper) HEAD(relativePath string) *GinRouteBuilder {
+	return w._route(http.MethodHead, relativePath)
+}
+
+func (w *GinRoutesWrapper) COUNT(relativePath string) *GinRouteBuilder {
+	return w._route("COUNT", relativePath)
+}
+
+func (w *GinRoutesWrapper) Any(relativePath string) *GinRouteBuilder {
+	return w._route("*", relativePath)
+}
+
+func (w *GinRoutesWrapper) _route(method string, relativePath string) *GinRouteBuilder {
+	return &GinRouteBuilder{
+		routes:   w,
+		method:   method,
+		relPath:  relativePath,
+		absPath:  joinPaths(w.absPath, relativePath),
+		handlers: langext.ArrCopy(w.defaultHandler),
+	}
+}
+
+func (w *GinRouteBuilder) Use(middleware ...gin.HandlerFunc) *GinRouteBuilder {
+	w.handlers = append(w.handlers, middleware...)
+	return w
+}
+
+func (w *GinRouteBuilder) WithJSONFilter(filter string) *GinRouteBuilder {
+	w.handlers = append(w.handlers, func(g *gin.Context) {
+		g.Set("goext.jsonfilter", filter)
+	})
+	return w
+}
+
+func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
+
+	if w.routes.wrapper.bufferBody {
+		arr := make([]gin.HandlerFunc, 0, len(w.handlers)+1)
+		arr = append(arr, BodyBuffer)
+		arr = append(arr, w.handlers...)
+		w.handlers = arr
+	}
+
+	middlewareNames := langext.ArrMap(w.handlers, func(v gin.HandlerFunc) string { return nameOfFunction(v) })
+	handlerName := nameOfFunction(handler)
+
+	w.handlers = append(w.handlers, Wrap(w.routes.wrapper, handler))
+
+	methodName := w.method
+
+	if w.method == "*" {
+		methodName = "ANY"
+		for _, method := range anyMethods {
+			w.routes.routes.Handle(method, w.relPath, w.handlers...)
+		}
+	} else {
+		w.routes.routes.Handle(w.method, w.relPath, w.handlers...)
+	}
+
+	w.routes.wrapper.routeSpecs = append(w.routes.wrapper.routeSpecs, ginRouteSpec{
+		Method:      methodName,
+		URL:         w.absPath,
+		Middlewares: middlewareNames,
+		Handler:     handlerName,
+	})
+}
+
+func (w *GinWrapper) NoRoute(handler WHandlerFunc) {
+
+	handlers := make([]gin.HandlerFunc, 0)
+
+	if w.bufferBody {
+		handlers = append(handlers, BodyBuffer)
+	}
+
+	middlewareNames := langext.ArrMap(handlers, func(v gin.HandlerFunc) string { return nameOfFunction(v) })
+	handlerName := nameOfFunction(handler)
+
+	handlers = append(handlers, Wrap(w, handler))
+
+	w.engine.NoRoute(handlers...)
+
+	w.routeSpecs = append(w.routeSpecs, ginRouteSpec{
+		Method:      "ANY",
+		URL:         "[NO_ROUTE]",
+		Middlewares: middlewareNames,
+		Handler:     handlerName,
+	})
+}
+
+func nameOfFunction(f any) string {
+
+	fname := runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
+
+	split := strings.Split(fname, "/")
+	if len(split) == 0 {
+		return ""
+	}
+
+	fname = split[len(split)-1]
+
+	// https://stackoverflow.com/a/32925345/1761622
+	if strings.HasSuffix(fname, "-fm") {
+		fname = fname[:len(fname)-len("-fm")]
+	}
+
+	return fname
+}
+
+// joinPaths is copied verbatim from gin@v1.9.1/gin.go
+func joinPaths(absolutePath, relativePath string) string {
+	if relativePath == "" {
+		return absolutePath
+	}
+
+	finalPath := path.Join(absolutePath, relativePath)
+	if lastChar(relativePath) == '/' && lastChar(finalPath) != '/' {
+		return finalPath + "/"
+	}
+	return finalPath
+}
+
+func lastChar(str string) uint8 {
+	if str == "" {
+		panic("The length of the string can't be 0")
+	}
+	return str[len(str)-1]
+}

ginext/session.go

@@ -0,0 +1,11 @@
+package ginext
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+)
+
+type SessionObject interface {
+	Init(g *gin.Context, ctx context.Context) error
+	Finish(ctx context.Context, resp HTTPResponse) error
+}

go.mod

@@ -1,32 +1,50 @@
 module gogs.mikescher.com/BlackForestBytes/goext
 
-go 1.19
+go 1.21
 
 require (
-	github.com/golang/snappy v0.0.4
+	github.com/gin-gonic/gin v1.9.1
-	github.com/google/go-cmp v0.5.9
 	github.com/jmoiron/sqlx v1.3.5
-	github.com/klauspost/compress v1.16.6
+	github.com/mattn/go-sqlite3 v1.14.19 // only needed for tests -.-
-	github.com/kr/pretty v0.1.0
+	github.com/rs/xid v1.5.0
-	github.com/montanaflynn/stats v0.7.1
+	github.com/rs/zerolog v1.31.0
-	github.com/pkg/errors v0.9.1
+	go.mongodb.org/mongo-driver v1.13.1
-	github.com/stretchr/testify v1.8.4
+	golang.org/x/crypto v0.17.0
-	github.com/tidwall/pretty v1.0.0
+	golang.org/x/sys v0.16.0
-	github.com/xdg-go/scram v1.1.2
+	golang.org/x/term v0.16.0
-	github.com/xdg-go/stringprep v1.0.4
-	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a
-	go.mongodb.org/mongo-driver v1.11.7
-	golang.org/x/crypto v0.10.0
-	golang.org/x/sync v0.3.0
-	golang.org/x/sys v0.9.0
-	golang.org/x/term v0.9.0
 )
 
 require (
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/bytedance/sonic v1.10.2 // indirect
-	github.com/kr/text v0.1.0 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.16.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/montanaflynn/stats v0.7.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
-	golang.org/x/text v0.10.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
+	golang.org/x/arch v0.7.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
+	golang.org/x/sync v0.6.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,72 +1,138 @@
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
+github.com/bytedance/sonic v1.10.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA=
+github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/chenzhuoyu/iasm v0.9.1 h1:tUHQJXo3NhBqw6s33wkGn9SP3bvrWLdlVIJ3hQBL7P0=
+github.com/chenzhuoyu/iasm v0.9.1/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
+github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
+github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
+github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
+github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
+github.com/go-playground/validator/v10 v10.16.0 h1:x+plE831WK4vaKHO/jpgUGsvLKIqRRkz6M78GuJAfGE=
+github.com/go-playground/validator/v10 v10.16.0/go.mod h1:9iXMNT7sEkjXb0I+enO7QXmzG6QCsPWY4zveKFVRSyU=
 github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
 github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
-github.com/klauspost/compress v1.16.6 h1:91SKEy4K37vkp255cJ8QesJhjyRO0hn9i9G0GoUwLsk=
+github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
-github.com/klauspost/compress v1.16.6/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
+github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
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-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
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-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
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 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
+google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.166"
+const GoextVersion = "0.0.357"
 
-const GoextVersionTimestamp = "2023-06-19T10:25:41+0200"
+const GoextVersionTimestamp = "2024-01-05T10:59:06+0100"

gojson/encode.go

@@ -156,7 +156,6 @@ import (
 // an error.
 func Marshal(v any) ([]byte, error) {
 	e := newEncodeState()
-	defer encodeStatePool.Put(e)
 
 	err := e.marshal(v, encOpts{escapeHTML: true})
 	if err != nil {
@@ -164,6 +163,8 @@ func Marshal(v any) ([]byte, error) {
 	}
 	buf := append([]byte(nil), e.Bytes()...)
 
+	encodeStatePool.Put(e)
+
 	return buf, nil
 }
 
@@ -174,9 +175,9 @@ type IndentOpt struct {
 
 // MarshalSafeCollections is like Marshal except it will marshal nil maps and
 // slices as '{}' and '[]' respectfully instead of 'null'
-func MarshalSafeCollections(v interface{}, nilSafeSlices bool, nilSafeMaps bool, indent *IndentOpt) ([]byte, error) {
+func MarshalSafeCollections(v interface{}, nilSafeSlices bool, nilSafeMaps bool, indent *IndentOpt, filter *string) ([]byte, error) {
 	e := &encodeState{}
-	err := e.marshal(v, encOpts{escapeHTML: true, nilSafeSlices: nilSafeSlices, nilSafeMaps: nilSafeMaps})
+	err := e.marshal(v, encOpts{escapeHTML: true, nilSafeSlices: nilSafeSlices, nilSafeMaps: nilSafeMaps, filter: filter})
 	if err != nil {
 		return nil, err
 	}
@@ -393,6 +394,9 @@ type encOpts struct {
 	nilSafeSlices bool
 	// nilSafeMaps marshals a nil maps '{}' instead of 'null'
 	nilSafeMaps bool
+	// filter matches jsonfilter tag of struct
+	// marshals if no jsonfilter is set or otherwise if jsonfilter has the filter value
+	filter *string
 }
 
 type encoderFunc func(e *encodeState, v reflect.Value, opts encOpts)
@@ -777,6 +781,8 @@ FieldLoop:
 
 		if f.omitEmpty && isEmptyValue(fv) {
 			continue
+		} else if opts.filter != nil && len(f.jsonfilter) > 0 && !f.jsonfilter.Contains(*opts.filter) {
+			continue
 		}
 		e.WriteByte(next)
 		next = ','
@@ -1224,11 +1230,24 @@ type field struct {
 	index      []int
 	typ        reflect.Type
 	omitEmpty  bool
+	jsonfilter jsonfilter
 	quoted     bool
 
 	encoder encoderFunc
 }
 
+// jsonfilter stores the value of the jsonfilter struct tag
+type jsonfilter []string
+
+func (j jsonfilter) Contains(t string) bool {
+	for _, tag := range j {
+		if t == tag {
+			return true
+		}
+	}
+	return false
+}
+
 // byIndex sorts field by index sequence.
 type byIndex []field
 
@@ -1304,6 +1323,13 @@ func typeFields(t reflect.Type) structFields {
 				if !isValidTag(name) {
 					name = ""
 				}
+
+				var jsonfilter []string
+				jsonfilterTag := sf.Tag.Get("jsonfilter")
+				if jsonfilterTag != "" && jsonfilterTag != "-" {
+					jsonfilter = strings.Split(jsonfilterTag, ",")
+				}
+
 				index := make([]int, len(f.index)+1)
 				copy(index, f.index)
 				index[len(f.index)] = i
@@ -1339,6 +1365,7 @@ func typeFields(t reflect.Type) structFields {
 						index:      index,
 						typ:        ft,
 						omitEmpty:  opts.Contains("omitempty"),
+						jsonfilter: jsonfilter,
 						quoted:     quoted,
 					}
 					field.nameBytes = []byte(field.name)

gojson/encode_test.go

@@ -1253,6 +1253,10 @@ func TestMarshalSafeCollections(t *testing.T) {
 		nilMapStruct struct {
 			NilMap map[string]interface{} `json:"nil_map"`
 		}
+		testWithFilter struct {
+			Test1 string `json:"test1" jsonfilter:"FILTERONE"`
+			Test2 string `json:"test2" jsonfilter:"FILTERTWO"`
+		}
 	)
 
 	tests := []struct {
@@ -1271,10 +1275,12 @@ func TestMarshalSafeCollections(t *testing.T) {
 		{map[string]interface{}{"1": 1, "2": 2, "3": 3}, "{\"1\":1,\"2\":2,\"3\":3}"},
 		{pNilMap, "null"},
 		{nilMapStruct{}, "{\"nil_map\":{}}"},
+		{testWithFilter{}, "{\"test1\":\"\"}"},
 	}
 
+	filter := "FILTERONE"
 	for i, tt := range tests {
-		b, err := MarshalSafeCollections(tt.in, true, true, nil)
+		b, err := MarshalSafeCollections(tt.in, true, true, nil, &filter)
 		if err != nil {
 			t.Errorf("test %d, unexpected failure: %v", i, err)
 		}

gojson/fold.go

@@ -97,7 +97,10 @@ func equalFoldRight(s, t []byte) bool {
 		t = t[size:]
 
 	}
-	return len(t) == 0
+	if len(t) > 0 {
+		return false
+	}
+	return true
 }
 
 // asciiEqualFold is a specialization of bytes.EqualFold for use when

gojson/fold_test.go

@@ -52,7 +52,9 @@ func TestFold(t *testing.T) {
 }
 
 func TestFoldAgainstUnicode(t *testing.T) {
-	var buf1, buf2 []byte
+	const bufSize = 5
+	buf1 := make([]byte, 0, bufSize)
+	buf2 := make([]byte, 0, bufSize)
 	var runes []rune
 	for i := 0x20; i <= 0x7f; i++ {
 		runes = append(runes, rune(i))
@@ -94,8 +96,12 @@ func TestFoldAgainstUnicode(t *testing.T) {
 				continue
 			}
 			for _, r2 := range runes {
-				buf1 = append(utf8.AppendRune(append(buf1[:0], 'x'), r), 'x')
+				buf1 := append(buf1[:0], 'x')
-				buf2 = append(utf8.AppendRune(append(buf2[:0], 'x'), r2), 'x')
+				buf2 := append(buf2[:0], 'x')
+				buf1 = buf1[:1+utf8.EncodeRune(buf1[1:bufSize], r)]
+				buf2 = buf2[:1+utf8.EncodeRune(buf2[1:bufSize], r2)]
+				buf1 = append(buf1, 'x')
+				buf2 = append(buf2, 'x')
 				want := bytes.EqualFold(buf1, buf2)
 				if got := ff.fold(buf1, buf2); got != want {
 					t.Errorf("%s(%q, %q) = %v; want %v", ff.name, buf1, buf2, got, want)

gojson/gionic.go

@@ -17,6 +17,7 @@ type GoJsonRender struct {
 	NilSafeSlices bool
 	NilSafeMaps   bool
 	Indent        *IndentOpt
+	Filter        *string
 }
 
 func (r GoJsonRender) Render(w http.ResponseWriter) error {
@@ -25,7 +26,7 @@ func (r GoJsonRender) Render(w http.ResponseWriter) error {
 		header["Content-Type"] = []string{"application/json; charset=utf-8"}
 	}
 
-	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent)
+	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent, r.Filter)
 	if err != nil {
 		panic(err)
 	}
@@ -36,6 +37,14 @@ func (r GoJsonRender) Render(w http.ResponseWriter) error {
 	return nil
 }
 
+func (r GoJsonRender) RenderString() (string, error) {
+	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent, r.Filter)
+	if err != nil {
+		panic(err)
+	}
+	return string(jsonBytes), nil
+}
+
 func (r GoJsonRender) WriteContentType(w http.ResponseWriter) {
 	header := w.Header()
 	if val := header["Content-Type"]; len(val) == 0 {

gojson/number_test.go

@@ -116,3 +116,18 @@ func TestNumberIsValid(t *testing.T) {
 		}
 	}
 }
+
+func BenchmarkNumberIsValid(b *testing.B) {
+	s := "-61657.61667E+61673"
+	for i := 0; i < b.N; i++ {
+		isValidNumber(s)
+	}
+}
+
+func BenchmarkNumberIsValidRegexp(b *testing.B) {
+	var jsonNumberRegexp = regexp.MustCompile(`^-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?$`)
+	s := "-61657.61667E+61673"
+	for i := 0; i < b.N; i++ {
+		jsonNumberRegexp.MatchString(s)
+	}
+}

gojson/scanner.go

@@ -594,7 +594,7 @@ func (s *scanner) error(c byte, context string) int {
 	return scanError
 }
 
-// quoteChar formats c as a quoted character literal.
+// quoteChar formats c as a quoted character literal
 func quoteChar(c byte) string {
 	// special cases - different from quoted strings
 	if c == '\'' {

gojson/stream.go

@@ -182,8 +182,6 @@ type Encoder struct {
 	w          io.Writer
 	err        error
 	escapeHTML bool
-	nilSafeSlices bool
-	nilSafeMaps   bool
 
 	indentBuf    *bytes.Buffer
 	indentPrefix string
@@ -204,11 +202,8 @@ func (enc *Encoder) Encode(v any) error {
 	if enc.err != nil {
 		return enc.err
 	}
-
 	e := newEncodeState()
-	defer encodeStatePool.Put(e)
+	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML})
-
-	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML, nilSafeMaps: enc.nilSafeMaps, nilSafeSlices: enc.nilSafeSlices})
 	if err != nil {
 		return err
 	}
@@ -236,6 +231,7 @@ func (enc *Encoder) Encode(v any) error {
 	if _, err = enc.w.Write(b); err != nil {
 		enc.err = err
 	}
+	encodeStatePool.Put(e)
 	return err
 }
 
@@ -247,13 +243,6 @@ func (enc *Encoder) SetIndent(prefix, indent string) {
 	enc.indentValue = indent
 }
 
-// SetNilSafeCollection specifies whether to represent nil slices and maps as
-// '[]' or '{}' respectfully (flag on) instead of 'null' (default) when marshaling json.
-func (enc *Encoder) SetNilSafeCollection(nilSafeSlices bool, nilSafeMaps bool) {
-	enc.nilSafeSlices = nilSafeSlices
-	enc.nilSafeMaps = nilSafeMaps
-}
-
 // SetEscapeHTML specifies whether problematic HTML characters
 // should be escaped inside JSON quoted strings.
 // The default behavior is to escape &, <, and > to \u0026, \u003c, and \u003e

gojson/stream_test.go

@@ -12,7 +12,6 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"reflect"
-	"runtime/debug"
 	"strings"
 	"testing"
 )
@@ -42,7 +41,7 @@ false
 
 func TestEncoder(t *testing.T) {
 	for i := 0; i <= len(streamTest); i++ {
-		var buf strings.Builder
+		var buf bytes.Buffer
 		enc := NewEncoder(&buf)
 		// Check that enc.SetIndent("", "") turns off indentation.
 		enc.SetIndent(">", ".")
@@ -60,43 +59,6 @@ func TestEncoder(t *testing.T) {
 	}
 }
 
-func TestEncoderErrorAndReuseEncodeState(t *testing.T) {
-	// Disable the GC temporarily to prevent encodeState's in Pool being cleaned away during the test.
-	percent := debug.SetGCPercent(-1)
-	defer debug.SetGCPercent(percent)
-
-	// Trigger an error in Marshal with cyclic data.
-	type Dummy struct {
-		Name string
-		Next *Dummy
-	}
-	dummy := Dummy{Name: "Dummy"}
-	dummy.Next = &dummy
-
-	var buf bytes.Buffer
-	enc := NewEncoder(&buf)
-	if err := enc.Encode(dummy); err == nil {
-		t.Errorf("Encode(dummy) == nil; want error")
-	}
-
-	type Data struct {
-		A string
-		I int
-	}
-	data := Data{A: "a", I: 1}
-	if err := enc.Encode(data); err != nil {
-		t.Errorf("Marshal(%v) = %v", data, err)
-	}
-
-	var data2 Data
-	if err := Unmarshal(buf.Bytes(), &data2); err != nil {
-		t.Errorf("Unmarshal(%v) = %v", data2, err)
-	}
-	if data2 != data {
-		t.Errorf("expect: %v, but get: %v", data, data2)
-	}
-}
-
 var streamEncodedIndent = `0.1
 "hello"
 null
@@ -115,7 +77,7 @@ false
 `
 
 func TestEncoderIndent(t *testing.T) {
-	var buf strings.Builder
+	var buf bytes.Buffer
 	enc := NewEncoder(&buf)
 	enc.SetIndent(">", ".")
 	for _, v := range streamTest {
@@ -185,7 +147,7 @@ func TestEncoderSetEscapeHTML(t *testing.T) {
 			`{"bar":"\"<html>foobar</html>\""}`,
 		},
 	} {
-		var buf strings.Builder
+		var buf bytes.Buffer
 		enc := NewEncoder(&buf)
 		if err := enc.Encode(tt.v); err != nil {
 			t.Errorf("Encode(%s): %s", tt.name, err)
@@ -347,6 +309,21 @@ func TestBlocking(t *testing.T) {
 	}
 }
 
+func BenchmarkEncoderEncode(b *testing.B) {
+	b.ReportAllocs()
+	type T struct {
+		X, Y string
+	}
+	v := &T{"foo", "bar"}
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			if err := NewEncoder(io.Discard).Encode(v); err != nil {
+				b.Fatal(err)
+			}
+		}
+	})
+}
+
 type tokenStreamCase struct {
 	json      string
 	expTokens []any
@@ -495,45 +472,3 @@ func TestHTTPDecoding(t *testing.T) {
 		t.Errorf("err = %v; want io.EOF", err)
 	}
 }
-
-func TestEncoderSetNilSafeCollection(t *testing.T) {
-	var (
-		nilSlice  []interface{}
-		pNilSlice *[]interface{}
-		nilMap    map[string]interface{}
-		pNilMap   *map[string]interface{}
-	)
-	for _, tt := range []struct {
-		name        string
-		v           interface{}
-		want        string
-		rescuedWant string
-	}{
-		{"nilSlice", nilSlice, "null", "[]"},
-		{"nonNilSlice", []interface{}{}, "[]", "[]"},
-		{"sliceWithValues", []interface{}{1, 2, 3}, "[1,2,3]", "[1,2,3]"},
-		{"pNilSlice", pNilSlice, "null", "null"},
-		{"nilMap", nilMap, "null", "{}"},
-		{"nonNilMap", map[string]interface{}{}, "{}", "{}"},
-		{"mapWithValues", map[string]interface{}{"1": 1, "2": 2, "3": 3}, "{\"1\":1,\"2\":2,\"3\":3}", "{\"1\":1,\"2\":2,\"3\":3}"},
-		{"pNilMap", pNilMap, "null", "null"},
-	} {
-		var buf bytes.Buffer
-		enc := NewEncoder(&buf)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.want {
-			t.Errorf("Encode(%s) = %#q, want %#q", tt.name, got, tt.want)
-		}
-		buf.Reset()
-		enc.SetNilSafeCollection(true, true)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Fatalf("SetNilSafeCollection(true) Encode(%s): %s", tt.name, err)
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.rescuedWant {
-			t.Errorf("SetNilSafeCollection(true) Encode(%s) = %#q, want %#q",
-				tt.name, got, tt.want)
-		}
-	}
-}

googleapi/README.md

@@ -0,0 +1,54 @@
+
+Google OAuth Setup (to send mails)
+==================================
+
+
+ - Login @ https://console.cloud.google.com
+
+ - GMail API akivieren: https://console.cloud.google.com/apis/library/gmail.googleapis.com?
+
+ - Create new Project (aka 'BackendMailAPI') @ https://console.cloud.google.com/projectcreate
+   User Type: Intern
+   Anwendungsname: 'BackendMailAPI'
+   Support-Email: ...
+   Authorisierte Domains: 'heydyno.de' (or project domain)
+   Kontakt-Email: ...
+   
+
+ - Unter "Anmeldedaten" neuer OAuth Client erstellen @ https://console.cloud.google.com/apis/credentials
+   Anwendungstyp: Web
+   Name: 'BackendMailOAuth'
+   Redirect-Uri: 'http://localhost/oauth'
+   Client-ID und Client-Key merken
+
+ - Open in Browser:
+   https://accounts.google.com/o/oauth2/v2/auth?redirect_uri=http://localhost/oauth&prompt=consent&response_type=code&client_id={...}&scope=https://www.googleapis.com/auth/gmail.send&access_type=offline
+   Code aus redirected URI merken
+
+ - Code via request einlösen (und refresh_roken merken):
+
+```
+curl --request POST \
+  --url https://oauth2.googleapis.com/token \
+  --data code={...} \
+  --data redirect_uri=http://localhost/oauth \
+  --data client_id={...} \
+  --data client_secret={...} \
+  --data grant_type=authorization_code \
+  --data scope=https://www.googleapis.com/auth/gmail.send
+```
+
+ - Fertig, mit `client_id`, `client_secret` und `refresh_token` kann das package benutzt werden
+
+
+
+
+
+
+
+
+
+
+
+
+

googleapi/attachment.go

@@ -0,0 +1,46 @@
+package googleapi
+
+import (
+	"encoding/base64"
+	"fmt"
+)
+
+type MailAttachment struct {
+	IsInline    bool
+	ContentType string
+	Filename    string
+	Data        []byte
+}
+
+func (a MailAttachment) dump() []string {
+	res := make([]string, 0, 4)
+
+	if a.ContentType != "" {
+		res = append(res, "Content-Type: "+a.ContentType+"; charset=UTF-8")
+	}
+
+	res = append(res, "Content-Transfer-Encoding: base64")
+
+	if a.IsInline {
+		if a.Filename != "" {
+			res = append(res, fmt.Sprintf("Content-Disposition: inline;filename=\"%s\"", a.Filename))
+		} else {
+			res = append(res, "Content-Disposition: inline")
+		}
+	} else {
+		if a.Filename != "" {
+			res = append(res, fmt.Sprintf("Content-Disposition: attachment;filename=\"%s\"", a.Filename))
+		} else {
+			res = append(res, "Content-Disposition: attachment")
+		}
+	}
+
+	b64 := base64.StdEncoding.EncodeToString(a.Data)
+	for i := 0; i < len(b64); i += 80 {
+		res = append(res, b64[i:min(i+80, len(b64))])
+	}
+
+	res = append(res)
+
+	return res
+}

googleapi/body.go

@@ -0,0 +1,6 @@
+package googleapi
+
+type MailBody struct {
+	Plain string
+	HTML  string
+}

googleapi/mimeMessage.go

@@ -0,0 +1,224 @@
+package googleapi
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"mime"
+	"strings"
+	"time"
+)
+
+// https://datatracker.ietf.org/doc/html/rfc2822
+func encodeMimeMail(from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) string {
+
+	data := make([]string, 0, 32)
+
+	data = append(data, "Date: "+time.Now().Format(time.RFC1123Z))
+	data = append(data, "MIME-Version: 1.0")
+	data = append(data, "From: "+mime.QEncoding.Encode("UTF-8", from))
+	data = append(data, "To: "+strings.Join(langext.ArrMap(recipients, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	if len(cc) > 0 {
+		data = append(data, "To: "+strings.Join(langext.ArrMap(cc, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	}
+	if len(bcc) > 0 {
+		data = append(data, "Bcc: "+strings.Join(langext.ArrMap(bcc, func(v string) string { return mime.QEncoding.Encode("UTF-8", v) }), ", "))
+	}
+	data = append(data, "Subject: "+mime.QEncoding.Encode("UTF-8", subject))
+
+	hasInlineAttachments := langext.ArrAny(attachments, func(v MailAttachment) bool { return v.IsInline })
+	hasNormalAttachments := langext.ArrAny(attachments, func(v MailAttachment) bool { return !v.IsInline })
+	hasPlain := body.Plain != ""
+	hasHTML := body.HTML != ""
+
+	mixedBoundary := langext.MustRawHexUUID()
+	relatedBoundary := langext.MustRawHexUUID()
+	altBoundary := langext.MustRawHexUUID()
+
+	inlineAttachments := langext.ArrFilter(attachments, func(v MailAttachment) bool { return v.IsInline })
+	normalAttachments := langext.ArrFilter(attachments, func(v MailAttachment) bool { return !v.IsInline })
+
+	if hasInlineAttachments && hasNormalAttachments {
+		// "mixed+related"
+
+		data = append(data, "Content-Type: multipart/mixed; boundary="+mixedBoundary)
+		data = append(data, "")
+		data = append(data, "--"+mixedBoundary)
+
+		data = append(data, "Content-Type: multipart/related; boundary="+relatedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, relatedBoundary, altBoundary)...)
+		data = append(data, "")
+
+		for i, attachment := range inlineAttachments {
+			data = append(data, "--"+relatedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(inlineAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+relatedBoundary+"--")
+
+		for i, attachment := range normalAttachments {
+			data = append(data, "--"+mixedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(normalAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+mixedBoundary+"--")
+
+	} else if hasNormalAttachments {
+		// "mixed"
+
+		data = append(data, "Content-Type: multipart/mixed; boundary="+mixedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, mixedBoundary, altBoundary)...)
+		if hasPlain && hasHTML {
+			data = append(data, "")
+		}
+
+		for i, attachment := range normalAttachments {
+			data = append(data, "--"+mixedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(normalAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+mixedBoundary+"--")
+
+	} else if hasInlineAttachments {
+		// "related"
+
+		data = append(data, "Content-Type: multipart/related; boundary="+relatedBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, relatedBoundary, altBoundary)...)
+		data = append(data, "")
+
+		for i, attachment := range inlineAttachments {
+			data = append(data, "--"+relatedBoundary)
+			data = append(data, attachment.dump()...)
+
+			if i < len(inlineAttachments)-1 {
+				data = append(data, "")
+			}
+		}
+
+		data = append(data, "--"+relatedBoundary+"--")
+
+	} else if hasPlain && hasHTML {
+		// "alternative"
+
+		data = append(data, "Content-Type: multipart/alternative; boundary="+altBoundary)
+		data = append(data, "")
+
+		data = append(data, dumpMailBody(body, hasInlineAttachments, hasNormalAttachments, altBoundary, altBoundary)...)
+		data = append(data, "")
+
+		data = append(data, "--"+altBoundary+"--")
+
+	} else if hasPlain {
+		// "plain"
+
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+
+	} else if hasHTML {
+		// "plain"
+
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+
+	} else {
+		// "empty??"
+
+	}
+
+	return strings.Join(data, "\r\n")
+}
+
+func dumpMailBody(body MailBody, hasInlineAttachments bool, hasNormalAttachments bool, boundary string, boundaryAlt string) []string {
+
+	if body.HTML != "" && body.Plain != "" && !hasInlineAttachments && hasNormalAttachments {
+		data := make([]string, 0, 16)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: multipart/alternative; boundary="+boundaryAlt)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		data = append(data, "")
+		data = append(data, "--"+boundaryAlt+"--")
+		return data
+	}
+
+	if body.HTML != "" && body.Plain != "" && hasInlineAttachments {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.HTML != "" && body.Plain != "" {
+		data := make([]string, 0, 8)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		data = append(data, "")
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.HTML != "" {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/html; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.HTML)
+		return data
+	}
+
+	if body.Plain != "" {
+		data := make([]string, 0, 2)
+		data = append(data, "--"+boundary)
+		data = append(data, "Content-Type: text/plain; charset=UTF-8")
+		data = append(data, "Content-Transfer-Encoding: 7bit")
+		data = append(data, "")
+		data = append(data, body.Plain)
+		return data
+	}
+
+	data := make([]string, 0, 16)
+	data = append(data, "--"+boundary)
+	data = append(data, "Content-Type: text/plain; charset=UTF-8")
+	data = append(data, "Content-Transfer-Encoding: 7bit")
+	data = append(data, "")
+	data = append(data, "") // no content ?!?
+	return data
+}

googleapi/mimeMessage_test.go

@@ -0,0 +1,80 @@
+package googleapi
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"testing"
+)
+
+func TestEncodeMimeMail(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail",
+		MailBody{Plain: "Plain Text"},
+		nil)
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail2(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			Plain: "Plain Text",
+			HTML:  "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		nil)
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail3(t *testing.T) {
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: []byte("HelloWorld"), Filename: "test.txt", IsInline: false, ContentType: "text/plain"},
+		})
+
+	verifyMime(mail)
+}
+
+func TestEncodeMimeMail4(t *testing.T) {
+
+	b := tst.Must(os.ReadFile("test_placeholder.png"))(t)
+
+	mail := encodeMimeMail(
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (inline)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: b, Filename: "img.png", IsInline: true, ContentType: "image/png"},
+		})
+
+	verifyMime(mail)
+}
+
+func verifyMime(mail string) {
+	//fmt.Printf("%s\n\n", mail)
+}

googleapi/oAuth.go

@@ -0,0 +1,91 @@
+package googleapi
+
+import (
+	"encoding/json"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"io"
+	"net/http"
+	"sync"
+	"time"
+)
+
+type GoogleOAuth interface {
+	AccessToken() (string, error)
+}
+
+type oauth struct {
+	clientID     string
+	clientSecret string
+	refreshToken string
+
+	lock        sync.RWMutex
+	accessToken *string
+	expiryDate  *time.Time
+}
+
+func NewGoogleOAuth(clientid string, clientsecret, refreshtoken string) GoogleOAuth {
+	return &oauth{
+		clientID:     clientid,
+		clientSecret: clientsecret,
+		refreshToken: refreshtoken,
+	}
+}
+
+func (c *oauth) AccessToken() (string, error) {
+	c.lock.RLock()
+	if c.accessToken != nil && c.expiryDate != nil && (*c.expiryDate).After(time.Now()) {
+		c.lock.RUnlock()
+		return *c.accessToken, nil // still valid
+	}
+	c.lock.RUnlock()
+
+	httpclient := http.Client{}
+
+	url := fmt.Sprintf("https://oauth2.googleapis.com/token?client_id=%s&client_secret=%s&grant_type=%s&refresh_token=%s",
+		c.clientID,
+		c.clientSecret,
+		"refresh_token",
+		c.refreshToken)
+
+	req, err := http.NewRequest(http.MethodPost, url, nil)
+	if err != nil {
+		return "", err
+	}
+
+	reqStartTime := time.Now()
+
+	res, err := httpclient.Do(req)
+
+	type response struct {
+		AccessToken string `json:"access_token"`
+		ExpiresIn   int    `json:"expires_in"`
+		Scope       string `json:"scope"`
+		TokenType   string `json:"token_type"`
+	}
+
+	var r response
+
+	data, err := io.ReadAll(res.Body)
+	if err != nil {
+		return "", err
+	}
+
+	err = json.Unmarshal(data, &r)
+	if err != nil {
+		return "", err
+	}
+
+	if r.ExpiresIn == 0 || r.AccessToken == "" {
+		return "", exerr.New(exerr.TypeGoogleResponse, "google oauth returned no response").Str("body", string(data)).Build()
+	}
+
+	c.lock.Lock()
+	c.expiryDate = langext.Ptr(reqStartTime.Add(timeext.FromSeconds(r.ExpiresIn - 10)))
+	c.accessToken = langext.Ptr(r.AccessToken)
+	c.lock.Unlock()
+
+	return r.AccessToken, nil
+}

googleapi/sendMail.go

@@ -0,0 +1,69 @@
+package googleapi
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"io"
+	"net/http"
+)
+
+type MailRef struct {
+	ID       string   `json:"id"`
+	ThreadID string   `json:"threadId"`
+	LabelIDs []string `json:"labelIds"`
+}
+
+func (c *client) SendMail(ctx context.Context, from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) (MailRef, error) {
+
+	mm := encodeMimeMail(from, recipients, cc, bcc, subject, body, attachments)
+
+	tok, err := c.oauth.AccessToken()
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	url := fmt.Sprintf("https://gmail.googleapis.com/gmail/v1/users/%s/messages/send?alt=json&prettyPrint=false", "me")
+
+	msgbody, err := json.Marshal(langext.H{"raw": base64.URLEncoding.EncodeToString([]byte(mm))})
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(msgbody))
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	req.Header.Add("Authorization", "Bearer "+tok)
+	req.Header.Add("X-Goog-Api-Client", "blackforestbytes-goext/"+goext.GoextVersion)
+	req.Header.Add("User-Agent", "blackforestbytes-goext/"+goext.GoextVersion)
+	req.Header.Add("Content-Type", "application/json")
+
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Build()
+	}
+
+	if resp.StatusCode != 200 {
+		return MailRef{}, exerr.New(exerr.TypeGoogleStatuscode, "gmail returned non-200 statuscode").Int("sc", resp.StatusCode).Str("body", string(respBody)).Build()
+	}
+
+	var respObj MailRef
+	err = json.Unmarshal(respBody, &respObj)
+	if err != nil {
+		return MailRef{}, exerr.Wrap(err, "").Str("body", string(respBody)).Build()
+	}
+
+	return respObj, nil
+}

googleapi/sendMail_test.go

@@ -0,0 +1,151 @@
+package googleapi
+
+import (
+	"context"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"os"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	if !exerr.Initialized() {
+		exerr.Init(exerr.ErrorPackageConfigInit{ZeroLogErrTraces: langext.PFalse, ZeroLogAllTraces: langext.PFalse})
+	}
+	os.Exit(m.Run())
+}
+
+func TestSendMail1(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail",
+		MailBody{Plain: "Plain Text"},
+		nil)
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail2(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (alternative)",
+		MailBody{
+			Plain: "Plain Text",
+			HTML:  "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		nil)
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail3(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (attach)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: []byte("HelloWorld"), Filename: "test.txt", IsInline: false, ContentType: "text/plain"},
+		})
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}
+
+func TestSendMail4(t *testing.T) {
+	t.Skip()
+	return
+
+	auth := NewGoogleOAuth(
+		"554617284247-8di0j6s5dcmlk4lmk4hdf9kdn8scss54.apps.googleusercontent.com",
+		"TODO",
+		"TODO")
+
+	ctx := context.Background()
+
+	gclient := NewGoogleClient(auth)
+
+	b := tst.Must(os.ReadFile("test_placeholder.png"))(t)
+
+	mail, err := gclient.SendMail(
+		ctx,
+		"noreply@heydyno.de",
+		[]string{"trash@mikescher.de"},
+		nil,
+		nil,
+		"Hello Test Mail (inline)",
+		MailBody{
+			HTML: "<html><body><u>Non</u> Pl<i>ai</i>n T<b>ex</b>t</body></html>",
+		},
+		[]MailAttachment{
+			{Data: b, Filename: "img.png", IsInline: true, ContentType: "image/png"},
+		})
+
+	tst.AssertNoErr(t, err)
+
+	fmt.Printf("mail.ID        := %s\n", mail.ID)
+	fmt.Printf("mail.ThreadID  := %s\n", mail.ThreadID)
+	fmt.Printf("mail.LabelIDs  := %v\n", mail.LabelIDs)
+}

googleapi/service.go

@@ -0,0 +1,22 @@
+package googleapi
+
+import (
+	"context"
+	"net/http"
+)
+
+type GoogleClient interface {
+	SendMail(ctx context.Context, from string, recipients []string, cc []string, bcc []string, subject string, body MailBody, attachments []MailAttachment) (MailRef, error)
+}
+
+type client struct {
+	oauth GoogleOAuth
+	http  http.Client
+}
+
+func NewGoogleClient(oauth GoogleOAuth) GoogleClient {
+	return &client{
+		oauth: oauth,
+		http:  http.Client{},
+	}
+}

langext/array.go

@@ -400,7 +400,7 @@ func ArrCastErr[T1 any, T2 any](arr []T1) ([]T2, error) {
 		if vcast, ok := any(v).(T2); ok {
 			r[i] = vcast
 		} else {
-			return nil, errors.New(fmt.Sprintf("Cannot cast element %d of type %T to type %s", i, v, *new(T2)))
+			return nil, errors.New(fmt.Sprintf("Cannot cast element %d of type %T to type %v", i, v, *new(T2)))
 		}
 	}
 	return r, nil
@@ -412,7 +412,7 @@ func ArrCastPanic[T1 any, T2 any](arr []T1) []T2 {
 		if vcast, ok := any(v).(T2); ok {
 			r[i] = vcast
 		} else {
-			panic(fmt.Sprintf("Cannot cast element %d of type %T to type %s", i, v, *new(T2)))
+			panic(fmt.Sprintf("Cannot cast element %d of type %T to type %v", i, v, *new(T2)))
 		}
 	}
 	return r
@@ -440,3 +440,42 @@ func ArrCopy[T any](in []T) []T {
 	copy(out, in)
 	return out
 }
+
+func ArrRemove[T comparable](arr []T, needle T) []T {
+	idx := ArrFirstIndex(arr, needle)
+	if idx >= 0 {
+		return append(arr[:idx], arr[idx+1:]...)
+	}
+	return arr
+}
+
+func ArrExcept[T comparable](arr []T, needles ...T) []T {
+	r := make([]T, 0, len(arr))
+	rmlist := ArrToSet(needles)
+	for _, v := range arr {
+		if _, ok := rmlist[v]; !ok {
+			r = append(r, v)
+		}
+	}
+	return r
+}
+
+func ArrayToInterface[T any](t []T) []interface{} {
+	res := make([]interface{}, 0, len(t))
+	for i, _ := range t {
+		res = append(res, t[i])
+	}
+	return res
+}
+
+func JoinString(arr []string, delimiter string) string {
+	str := ""
+	for i, v := range arr {
+		str += v
+		if i < len(arr)-1 {
+			str += delimiter
+		}
+	}
+
+	return str
+}

langext/array_test.go

@@ -0,0 +1,12 @@
+package langext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func TestJoinString(t *testing.T) {
+	ids := []string{"1", "2", "3"}
+	res := JoinString(ids, ",")
+	tst.AssertEqual(t, res, "1,2,3")
+}

langext/base58_test.go

@@ -1,6 +1,7 @@
 package langext
 
 import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 
@@ -59,9 +60,3 @@ func TestBase58FlickrDecoding(t *testing.T) {
 	tst.AssertEqual(t, _decStr(t, Base58FlickrEncoding, "9aJCVZR"), "Hello")
 	tst.AssertEqual(t, _decStr(t, Base58FlickrEncoding, "48638rmBiUzG5NKQoX4KcuE5C8paCFACnE28F7qDx13PRtennAmYSSJQ5gJSRihf5ZDyEQS4UimtihR7uARt4wbty2fW9duTQTM9n1DwUBevreyzGwu6W4YSgrvQgCPDxsiE1mCdZsF8VEBpuHHEiJyw"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
 }
-
-func tst.AssertEqual(t *testing.T, actual string, expected string) {
-	if actual != expected {
-		t.Errorf("values differ: Actual: '%v', Expected: '%v'", actual, expected)
-	}
-}

langext/baseAny.go

@@ -0,0 +1,178 @@
+package langext
+
+import (
+	"crypto/rand"
+	"errors"
+	"math"
+	"math/big"
+)
+
+type AnyBaseConverter struct {
+	base    uint64
+	charset []rune
+}
+
+func NewAnyBaseConverter(cs string) AnyBaseConverter {
+	rcs := []rune(cs)
+	return AnyBaseConverter{
+		base:    uint64(len(rcs)),
+		charset: rcs,
+	}
+}
+
+func (bc AnyBaseConverter) Rand(rlen int) string {
+	biBase := big.NewInt(int64(bc.base))
+
+	randMax := big.NewInt(math.MaxInt64)
+
+	r := ""
+
+	for i := 0; i < rlen; i++ {
+		v, err := rand.Int(rand.Reader, randMax)
+		if err != nil {
+			panic(err)
+		}
+
+		r += string(bc.charset[v.Mod(v, biBase).Int64()])
+	}
+
+	return r
+}
+
+func (bc AnyBaseConverter) EncodeUInt64(num uint64) string {
+	if num == 0 {
+		return "0"
+	}
+
+	b := ""
+
+	// loop as long the num is bigger than zero
+	for num > 0 {
+		r := num % bc.base
+
+		num -= r
+		num /= base62Base
+
+		b += string(bc.charset[int(r)])
+	}
+
+	return b
+}
+
+func (bc AnyBaseConverter) DecodeUInt64(str string) (uint64, error) {
+	if str == "" {
+		return 0, errors.New("empty string")
+	}
+
+	result := uint64(0)
+
+	for _, v := range str {
+		result *= base62Base
+
+		pos := ArrFirstIndex(bc.charset, v)
+		if pos == -1 {
+			return 0, errors.New("invalid character: " + string(v))
+		}
+
+		result += uint64(pos)
+	}
+
+	return result, nil
+}
+
+func (bc AnyBaseConverter) Encode(src []byte) string {
+	value := new(big.Int)
+	value.SetBytes(src)
+	return bc.EncodeBigInt(value)
+}
+
+func (bc AnyBaseConverter) EncodeBigInt(src *big.Int) string {
+	value := new(big.Int)
+	value.Set(src)
+
+	isneg := value.Sign() < 0
+
+	answer := ""
+
+	if isneg {
+		value.Neg(value)
+	}
+
+	biBase := big.NewInt(int64(bc.base))
+
+	rem := new(big.Int)
+
+	for value.Sign() > 0 {
+		value.QuoRem(value, biBase, rem)
+		answer = string(bc.charset[rem.Int64()]) + answer
+	}
+
+	if isneg {
+		return "-" + answer
+	} else {
+		return answer
+	}
+}
+
+func (bc AnyBaseConverter) Decode(src string) ([]byte, error) {
+	value, err := bc.DecodeToBigInt(src)
+	if err != nil {
+		return nil, err
+	}
+	return value.Bytes(), nil
+}
+
+func (bc AnyBaseConverter) DecodeToBigInt(_src string) (*big.Int, error) {
+	result := new(big.Int)
+	result.SetInt64(0)
+
+	src := []rune(_src)
+
+	if len(src) == 0 {
+		return nil, errors.New("string is empty")
+	}
+	if bc.base < 2 {
+		return nil, errors.New("not enough digits")
+	}
+
+	i := 0
+
+	sign := new(big.Int)
+	sign.SetInt64(1)
+	if src[i] == '+' {
+		i++
+	} else if src[i] == '-' {
+		i++
+		sign.SetInt64(-1)
+	}
+
+	if i >= len(src) {
+		return nil, errors.New("no digits in input")
+	}
+
+	biBase := big.NewInt(int64(bc.base))
+
+	oldResult := new(big.Int)
+
+	for ; i < len(src); i++ {
+		n := ArrFirstIndex(bc.charset, src[i])
+		if n < 0 {
+			return nil, errors.New("invalid characters in input")
+		}
+
+		oldResult.Set(result)
+
+		result.Mul(result, biBase)
+		result.Add(result, big.NewInt(int64(n)))
+
+		if result.Cmp(oldResult) < 0 {
+			return nil, errors.New("overflow")
+		}
+	}
+
+	if sign.Cmp(big.NewInt(0)) < 0 {
+		result.Neg(result)
+	}
+
+	return result, nil
+}

langext/baseAny_test.go

@@ -0,0 +1,80 @@
+package langext
+
+import (
+	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"testing"
+)
+
+func _anyEncStr(bc AnyBaseConverter, v string) string {
+	vr := bc.Encode([]byte(v))
+	return vr
+}
+
+func _anyDecStr(bc AnyBaseConverter, v string) string {
+	vr, err := bc.Decode(v)
+	if err != nil {
+		panic(err)
+	}
+	return string(vr)
+}
+
+func TestAnyBase58DefaultEncoding(t *testing.T) {
+	tst.AssertEqual(t, _anyEncStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "Hello"), "9Ajdvzr")
+	tst.AssertEqual(t, _anyEncStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in."), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX")
+}
+
+func TestAnyBase58DefaultDecoding(t *testing.T) {
+	tst.AssertEqual(t, _anyDecStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "9Ajdvzr"), "Hello")
+	tst.AssertEqual(t, _anyDecStr(NewAnyBaseConverter("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"), "48638SMcJuah5okqPx4kCVf5d8QAdgbdNf28g7ReY13prUENNbMyssjq5GjsrJHF5zeZfqs4uJMUJHr7VbrU4XBUZ2Fw9DVtqtn9N1eXucEWSEZahXV6w4ysGSWqGdpeYTJf1MdDzTg8vfcQViifJjZX"), "If debugging is the process of removing software bugs, then programming must be the process of putting them in.")
+}
+
+func TestAnyBaseDecode(t *testing.T) {
+
+	const (
+		Binary  = "01"
+		Decimal = "0123456789"
+		Hex     = "0123456789ABCDEF"
+		DNA     = "ACGT"
+		Base32  = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"
+		Base58  = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
+		Base62  = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+		Base64  = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+		Base256 = "🚀🪐☄🛰🌌🌑🌒🌓🌔🌕🌖🌗🌘🌍🌏🌎🐉☀💻🖥💾💿😂❤😍🤣😊🙏💕😭😘👍😅👏😁🔥🥰💔💖💙😢🤔😆🙄💪😉☺👌🤗💜😔😎😇🌹🤦🎉💞✌✨🤷😱😌🌸🙌😋💗💚😏💛🙂💓🤩😄😀🖤😃💯🙈👇🎶😒🤭❣😜💋👀😪😑💥🙋😞😩😡🤪👊🥳😥🤤👉💃😳✋😚😝😴🌟😬🙃🍀🌷😻😓⭐✅🥺🌈😈🤘💦✔😣🏃💐☹🎊💘😠☝😕🌺🎂🌻😐🖕💝🙊😹🗣💫💀👑🎵🤞😛🔴😤🌼😫⚽🤙☕🏆🤫👈😮🙆🍻🍃🐶💁😲🌿🧡🎁⚡🌞🎈❌✊👋😰🤨😶🤝🚶💰🍓💢🤟🙁🚨💨🤬✈🎀🍺🤓😙💟🌱😖👶🥴▶➡❓💎💸⬇😨🌚🦋😷🕺⚠🙅😟😵👎🤲🤠🤧📌🔵💅🧐🐾🍒😗🤑🌊🤯🐷☎💧😯💆👆🎤🙇🍑❄🌴💣🐸💌📍🥀🤢👅💡💩👐📸👻🤐🤮🎼🥵🚩🍎🍊👼💍📣🥂"
+	)
+
+	type TestDef struct {
+		FromCS  string
+		FromVal string
+		ToCS    string
+		ToVal   string
+	}
+
+	defs := []TestDef{
+		{Binary, "10100101011100000101010", Decimal, "5421098"},
+		{Decimal, "5421098", DNA, "CCAGGTGAAGGG"},
+		{Decimal, "5421098", DNA, "CCAGGTGAAGGG"},
+		{Decimal, "80085", Base256, "🪐💞🔵"},
+		{Hex, "48656C6C6C20576F526C5421", Base64, "SGVsbGwgV29SbFQh"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base32, "CIMVWGY3B7QFO32SNRPZBB"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base58, "2fUsGKQUcgQcwSqpvy6"},
+		{Base64, "SGVsbGw/gV29SbF+Qh", Base62, "V34nvybdQ3m3RHk9Sr"},
+	}
+
+	for _, def := range defs {
+
+		d1 := NewAnyBaseConverter(def.FromCS)
+		d2 := NewAnyBaseConverter(def.ToCS)
+
+		v1 := tst.Must(d1.Decode(def.FromVal))(t)
+		v2 := tst.Must(d2.Decode(def.ToVal))(t)
+
+		tst.AssertArrayEqual(t, v1, v2)
+
+		str2 := d2.Encode(v1)
+		tst.AssertEqual(t, str2, def.ToVal)
+
+		str1 := d1.Encode(v2)
+		tst.AssertEqual(t, str1, def.FromVal)
+
+	}
+}

langext/maps.go

@@ -29,6 +29,22 @@ func ArrToMap[T comparable, V any](a []V, keyfunc func(V) T) map[T]V {
 	return result
 }
 
+func ArrToKVMap[T any, K comparable, V any](a []T, keyfunc func(T) K, valfunc func(T) V) map[K]V {
+	result := make(map[K]V, len(a))
+	for _, v := range a {
+		result[keyfunc(v)] = valfunc(v)
+	}
+	return result
+}
+
+func ArrToSet[T comparable](a []T) map[T]bool {
+	result := make(map[T]bool, len(a))
+	for _, v := range a {
+		result[v] = true
+	}
+	return result
+}
+
 func MapToArr[T comparable, V any](v map[T]V) []MapEntry[T, V] {
 	result := make([]MapEntry[T, V], 0, len(v))
 	for mk, mv := range v {

langext/panic.go

@@ -1,7 +1,10 @@
 package langext
 
+import "runtime/debug"
+
 type PanicWrappedErr struct {
 	panic any
+	Stack string
 }
 
 func (p PanicWrappedErr) Error() string {
@@ -15,7 +18,7 @@ func (p PanicWrappedErr) ReoveredObj() any {
 func RunPanicSafe(fn func()) (err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -27,7 +30,7 @@ func RunPanicSafe(fn func()) (err error) {
 func RunPanicSafeR1(fn func() error) (err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -38,7 +41,7 @@ func RunPanicSafeR2[T1 any](fn func() (T1, error)) (r1 T1, err error) {
 	defer func() {
 		if rec := recover(); rec != nil {
 			r1 = *new(T1)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -50,7 +53,7 @@ func RunPanicSafeR3[T1 any, T2 any](fn func() (T1, T2, error)) (r1 T1, r2 T2, er
 		if rec := recover(); rec != nil {
 			r1 = *new(T1)
 			r2 = *new(T2)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 
@@ -63,7 +66,7 @@ func RunPanicSafeR4[T1 any, T2 any, T3 any](fn func() (T1, T2, T3, error)) (r1 T
 			r1 = *new(T1)
 			r2 = *new(T2)
 			r3 = *new(T3)
-			err = PanicWrappedErr{panic: rec}
+			err = PanicWrappedErr{panic: rec, Stack: string(debug.Stack())}
 		}
 	}()
 

langext/pointer.go

@@ -10,10 +10,23 @@ var PTrue = Ptr(true)
 // PFalse := &false
 var PFalse = Ptr(false)
 
+// PNil := &nil
+var PNil = Ptr[any](nil)
+
 func Ptr[T any](v T) *T {
 	return &v
 }
 
+func DblPtr[T any](v T) **T {
+	v_ := &v
+	return &v_
+}
+
+func DblPtrNil[T any]() **T {
+	var v *T = nil
+	return &v
+}
+
 func PtrInt32(v int32) *int32 {
 	return &v
 }
@@ -35,7 +48,7 @@ func IsNil(i interface{}) bool {
 		return true
 	}
 	switch reflect.TypeOf(i).Kind() {
-	case reflect.Ptr, reflect.Map, reflect.Array, reflect.Chan, reflect.Slice:
+	case reflect.Ptr, reflect.Map, reflect.Chan, reflect.Slice, reflect.Func, reflect.UnsafePointer:
 		return reflect.ValueOf(i).IsNil()
 	}
 	return false

mongo/.errcheck-excludes

@@ -1,16 +0,0 @@
-(go.mongodb.org/mongo-driver/x/mongo/driver.Connection).Close
-(*go.mongodb.org/mongo-driver/x/network/connection.connection).Close
-(go.mongodb.org/mongo-driver/x/network/connection.Connection).Close
-(*go.mongodb.org/mongo-driver/x/mongo/driver/topology.connection).close
-(*go.mongodb.org/mongo-driver/x/mongo/driver/topology.Topology).Unsubscribe
-(*go.mongodb.org/mongo-driver/x/mongo/driver/topology.Server).Close
-(*go.mongodb.org/mongo-driver/x/network/connection.pool).closeConnection
-(*go.mongodb.org/mongo-driver/x/mongo/driver/topology.pool).close
-(go.mongodb.org/mongo-driver/x/network/wiremessage.ReadWriteCloser).Close
-(*go.mongodb.org/mongo-driver/mongo.Cursor).Close
-(*go.mongodb.org/mongo-driver/mongo.ChangeStream).Close
-(*go.mongodb.org/mongo-driver/mongo.Client).Disconnect
-(net.Conn).Close
-encoding/pem.Encode
-fmt.Fprintf
-fmt.Fprint

mongo/.gitignore

@@ -1,13 +0,0 @@
-.vscode
-debug
-.idea
-*.iml
-*.ipr
-*.iws
-.idea
-*.sublime-project
-*.sublime-workspace
-driver-test-data.tar.gz
-perf
-**mongocryptd.pid
-*.test

mongo/.gitmodules

@@ -1,3 +0,0 @@
-[submodule "specifications"]
-	path = specifications
-	url = git@github.com:mongodb/specifications.git

mongo/.golangci.yml

@@ -1,123 +0,0 @@
-run:
-  timeout: 5m
-
-linters:
-  disable-all: true
-  # TODO(GODRIVER-2156): Enable all commented-out linters.
-  enable:
-    - errcheck
-    # - errorlint
-    - gocritic
-    - goimports
-    - gosimple
-    - gosec
-    - govet
-    - ineffassign
-    - makezero
-    - misspell
-    - nakedret
-    - paralleltest
-    - prealloc
-    - revive
-    - staticcheck
-    - typecheck
-    - unused
-    - unconvert
-    - unparam
-
-linters-settings:
-  errcheck:
-    exclude: .errcheck-excludes
-  gocritic:
-    enabled-checks:
-      # Detects suspicious append result assignments. E.g. "b := append(a, 1, 2, 3)"
-      - appendAssign
-  govet:
-    disable:
-      - cgocall
-      - composites
-  paralleltest:
-    # Ignore missing calls to `t.Parallel()` and only report incorrect uses of `t.Parallel()`.
-    ignore-missing: true
-  staticcheck:
-    checks: [
-      "all",
-      "-SA1019", # Disable deprecation warnings for now.
-      "-SA1012", # Disable "do not pass a nil Context" to allow testing nil contexts in tests.
-    ]
-
-issues:
-  exclude-use-default: false
-  exclude:
-    # Add all default excluded issues except issues related to exported types/functions not having
-    # comments; we want those warnings. The defaults are copied from the "--exclude-use-default"
-    # documentation on https://golangci-lint.run/usage/configuration/#command-line-options
-    ## Defaults ##
-    # EXC0001 errcheck: Almost all programs ignore errors on these functions and in most cases it's ok
-    - Error return value of .((os\.)?std(out|err)\..*|.*Close|.*Flush|os\.Remove(All)?|.*print(f|ln)?|os\.(Un)?Setenv). is not checked
-    # EXC0003 golint: False positive when tests are defined in package 'test'
-    - func name will be used as test\.Test.* by other packages, and that stutters; consider calling this
-    # EXC0004 govet: Common false positives
-    - (possible misuse of unsafe.Pointer|should have signature)
-    # EXC0005 staticcheck: Developers tend to write in C-style with an explicit 'break' in a 'switch', so it's ok to ignore
-    - ineffective break statement. Did you mean to break out of the outer loop
-    # EXC0006 gosec: Too many false-positives on 'unsafe' usage
-    - Use of unsafe calls should be audited
-    # EXC0007 gosec: Too many false-positives for parametrized shell calls
-    - Subprocess launch(ed with variable|ing should be audited)
-    # EXC0008 gosec: Duplicated errcheck checks
-    - (G104|G307)
-    # EXC0009 gosec: Too many issues in popular repos
-    - (Expect directory permissions to be 0750 or less|Expect file permissions to be 0600 or less)
-    # EXC0010 gosec: False positive is triggered by 'src, err := ioutil.ReadFile(filename)'
-    - Potential file inclusion via variable
-    ## End Defaults ##
-
-    # Ignore capitalization warning for this weird field name.
-    - "var-naming: struct field CqCssWxW should be CqCSSWxW"
-    # Ignore warnings for common "wiremessage.Read..." usage because the safest way to use that API
-    # is by assigning possibly unused returned byte buffers.
-    - "SA4006: this value of `wm` is never used"
-    - "SA4006: this value of `rem` is never used"
-    - "ineffectual assignment to wm"
-    - "ineffectual assignment to rem"
-
-  skip-dirs-use-default: false
-  skip-dirs:
-    - (^|/)vendor($|/)
-    - (^|/)testdata($|/)
-    - (^|/)etc($|/)
-  exclude-rules:
-    # Ignore some linters for example code that is intentionally simplified.
-    - path: examples/
-      linters:
-        - revive
-        - errcheck
-    # Disable unused code linters for the copy/pasted "awsv4" package.
-    - path: x/mongo/driver/auth/internal/awsv4
-      linters:
-        - unused
-    # Disable "unused" linter for code files that depend on the "mongocrypt.MongoCrypt" type because
-    # the linter build doesn't work correctly with CGO enabled. As a result, all calls to a
-    # "mongocrypt.MongoCrypt" API appear to always panic (see mongocrypt_not_enabled.go), leading
-    # to confusing messages about unused code.
-    - path: x/mongo/driver/crypt.go|mongo/(crypt_retrievers|mongocryptd).go
-      linters:
-        - unused
-    # Ignore "TLS MinVersion too low", "TLS InsecureSkipVerify set true", and "Use of weak random
-    # number generator (math/rand instead of crypto/rand)" in tests.
-    - path: _test\.go
-      text: G401|G402|G404
-      linters:
-        - gosec
-    # Ignore missing comments for exported variable/function/type for code in the "internal" and
-    # "benchmark" directories.
-    - path: (internal\/|benchmark\/)
-      text: exported (.+) should have comment( \(or a comment on this block\))? or be unexported
-    # Ignore missing package comments for directories that aren't frequently used by external users.
-    - path: (internal\/|benchmark\/|x\/|cmd\/|mongo\/integration\/)
-      text: should have a package comment
-    # Disable unused linter for "golang.org/x/exp/rand" package in internal/randutil/rand.
-    - path: internal/randutil/rand
-      linters:
-        - unused

mongo/LICENSE

@@ -1,201 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-
-   1. Definitions.
-
-      "License" shall mean the terms and conditions for use, reproduction,
-      and distribution as defined by Sections 1 through 9 of this document.
-
-      "Licensor" shall mean the copyright owner or entity authorized by
-      the copyright owner that is granting the License.
-
-      "Legal Entity" shall mean the union of the acting entity and all
-      other entities that control, are controlled by, or are under common
-      control with that entity. For the purposes of this definition,
-      "control" means (i) the power, direct or indirect, to cause the
-      direction or management of such entity, whether by contract or
-      otherwise, or (ii) ownership of fifty percent (50%) or more of the
-      outstanding shares, or (iii) beneficial ownership of such entity.
-
-      "You" (or "Your") shall mean an individual or Legal Entity
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-   limitations under the License.

mongo/Makefile

@@ -1,210 +0,0 @@
-ATLAS_URIS = "$(ATLAS_FREE)" "$(ATLAS_REPLSET)" "$(ATLAS_SHARD)" "$(ATLAS_TLS11)" "$(ATLAS_TLS12)" "$(ATLAS_FREE_SRV)" "$(ATLAS_REPLSET_SRV)" "$(ATLAS_SHARD_SRV)" "$(ATLAS_TLS11_SRV)" "$(ATLAS_TLS12_SRV)" "$(ATLAS_SERVERLESS)" "$(ATLAS_SERVERLESS_SRV)"
-TEST_TIMEOUT = 1800
-
-### Utility targets. ###
-.PHONY: default
-default: build check-license check-fmt check-modules lint test-short
-
-.PHONY: add-license
-add-license:
-	etc/check_license.sh -a
-
-.PHONY: check-license
-check-license:
-	etc/check_license.sh
-
-.PHONY: build
-build: cross-compile build-tests build-compile-check
-	go build ./...
-	go build $(BUILD_TAGS) ./...
-
-# Use ^$ to match no tests so that no tests are actually run but all tests are
-# compiled. Run with -short to ensure none of the TestMain functions try to
-# connect to a server.
-.PHONY: build-tests
-build-tests:
-	go test -short $(BUILD_TAGS) -run ^$$ ./...
-
-.PHONY: build-compile-check
-build-compile-check:
-	etc/compile_check.sh
-
-# Cross-compiling on Linux for architectures 386, arm, arm64, amd64, ppc64le, and s390x.
-# Omit any build tags because we don't expect our build environment to support compiling the C
-# libraries for other architectures.
-.PHONY: cross-compile
-cross-compile:
-	GOOS=linux GOARCH=386 go build ./...
-	GOOS=linux GOARCH=arm go build ./...
-	GOOS=linux GOARCH=arm64 go build ./...
-	GOOS=linux GOARCH=amd64 go build ./...
-	GOOS=linux GOARCH=ppc64le go build ./...
-	GOOS=linux GOARCH=s390x go build ./...
-
-.PHONY: install-lll
-install-lll:
-	go install github.com/walle/lll/...@latest
-
-.PHONY: check-fmt
-check-fmt: install-lll
-	etc/check_fmt.sh
-
-# check-modules runs "go mod tidy" then "go mod vendor" and exits with a non-zero exit code if there
-# are any module or vendored modules changes. The intent is to confirm two properties:
-#
-# 1. Exactly the required modules are declared as dependencies. We should always be able to run
-# "go mod tidy" and expect that no unrelated changes are made to the "go.mod" file.
-#
-# 2. All required modules are copied into the vendor/ directory and are an exact copy of the
-# original module source code (i.e. the vendored modules are not modified from their original code).
-.PHONY: check-modules
-check-modules:
-	go mod tidy -v
-	go mod vendor
-	git diff --exit-code go.mod go.sum ./vendor
-
-.PHONY: doc
-doc:
-	godoc -http=:6060 -index
-
-.PHONY: fmt
-fmt:
-	go fmt ./...
-
-.PHONY: install-golangci-lint
-install-golangci-lint:
-	go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.51.0
-
-# Lint with various GOOS and GOARCH targets to catch static analysis failures that may only affect
-# specific operating systems or architectures. For example, staticcheck will only check for 64-bit
-# alignment of atomically accessed variables on 32-bit architectures (see
-# https://staticcheck.io/docs/checks#SA1027)
-.PHONY: lint
-lint: install-golangci-lint
-	GOOS=linux GOARCH=386 golangci-lint run --config .golangci.yml ./...
-	GOOS=linux GOARCH=arm golangci-lint run --config .golangci.yml ./...
-	GOOS=linux GOARCH=arm64 golangci-lint run --config .golangci.yml ./...
-	GOOS=linux GOARCH=amd64 golangci-lint run --config .golangci.yml ./...
-	GOOS=linux GOARCH=ppc64le golangci-lint run --config .golangci.yml ./...
-	GOOS=linux GOARCH=s390x golangci-lint run --config .golangci.yml ./...
-
-.PHONY: update-notices
-update-notices:
-	etc/generate_notices.pl > THIRD-PARTY-NOTICES
-
-### Local testing targets. ###
-.PHONY: test
-test:
-	go test $(BUILD_TAGS) -timeout $(TEST_TIMEOUT)s -p 1 ./...
-
-.PHONY: test-cover
-test-cover:
-	go test $(BUILD_TAGS) -timeout $(TEST_TIMEOUT)s -cover $(COVER_ARGS) -p 1 ./...
-
-.PHONY: test-race
-test-race:
-	go test $(BUILD_TAGS) -timeout $(TEST_TIMEOUT)s -race -p 1 ./...
-
-.PHONY: test-short
-test-short:
-	go test $(BUILD_TAGS) -timeout 60s -short ./...
-
-### Evergreen specific targets. ###
-.PHONY: build-aws-ecs-test
-build-aws-ecs-test:
-	go build $(BUILD_TAGS) ./cmd/testaws/main.go
-
-.PHONY: evg-test
-evg-test:
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s -p 1 ./... >> test.suite
-
-.PHONY: evg-test-atlas
-evg-test-atlas:
-	go run ./cmd/testatlas/main.go $(ATLAS_URIS)
-
-.PHONY: evg-test-atlas-data-lake
-evg-test-atlas-data-lake:
-	ATLAS_DATA_LAKE_INTEGRATION_TEST=true go test -v ./mongo/integration -run TestUnifiedSpecs/atlas-data-lake-testing >> spec_test.suite
-	ATLAS_DATA_LAKE_INTEGRATION_TEST=true go test -v ./mongo/integration -run TestAtlasDataLake >> spec_test.suite
-
-.PHONY: evg-test-enterprise-auth
-evg-test-enterprise-auth:
-	go run -tags gssapi ./cmd/testentauth/main.go
-
-.PHONY: evg-test-kmip
-evg-test-kmip:
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionSpec/kmipKMS >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse/data_key_and_double_encryption >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse/corpus >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse/custom_endpoint >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse/kms_tls_options_test >> test.suite
-
-.PHONY: evg-test-kms
-evg-test-kms:
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse/kms_tls_tests >> test.suite
-
-.PHONY: evg-test-load-balancers
-evg-test-load-balancers:
-	# Load balancer should be tested with all unified tests as well as tests in the following
-	# components: retryable reads, retryable writes, change streams, initial DNS seedlist discovery.
-	go test $(BUILD_TAGS) ./mongo/integration -run TestUnifiedSpecs/retryable-reads -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestRetryableWritesSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestChangeStreamSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestInitialDNSSeedlistDiscoverySpec/load_balanced -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestLoadBalancerSupport -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration/unified -run TestUnifiedSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-
-.PHONY: evg-test-ocsp
-evg-test-ocsp:
-	go test -v ./mongo -run TestOCSP $(OCSP_TLS_SHOULD_SUCCEED) >> test.suite
-
-.PHONY: evg-test-serverless
-evg-test-serverless:
-	# Serverless should be tested with all unified tests as well as tests in the following components: CRUD, load balancer,
-	# retryable reads, retryable writes, sessions, transactions and cursor behavior.
-	go test $(BUILD_TAGS) ./mongo/integration -run TestCrudSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestWriteErrorsWithLabels -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestWriteErrorsDetails -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestHintErrors -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestWriteConcernError -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestErrorsCodeNamePropagated -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestLoadBalancerSupport -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestUnifiedSpecs/retryable-reads -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestRetryableReadsProse -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestRetryableWritesSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestRetryableWritesProse -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestUnifiedSpecs/sessions -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestSessionsProse -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestUnifiedSpecs/transactions/legacy -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestConvenientTransactions -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration -run TestCursor -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test $(BUILD_TAGS) ./mongo/integration/unified -run TestUnifiedSpec -v -timeout $(TEST_TIMEOUT)s >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionSpec >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration -run TestClientSideEncryptionProse >> test.suite
-
-.PHONY: evg-test-versioned-api
-evg-test-versioned-api:
-	# Versioned API related tests are in the mongo, integration and unified packages.
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration >> test.suite
-	go test -exec "env PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) LD_LIBRARY_PATH=$(LD_LIBRARY_PATH)" $(BUILD_TAGS) -v -timeout $(TEST_TIMEOUT)s ./mongo/integration/unified >> test.suite
-
-.PHONY: build-gcpkms-test
-build-gcpkms-test:
-	go build $(BUILD_TAGS) ./cmd/testgcpkms
-
-### Benchmark specific targets and support. ###
-.PHONY: benchmark
-benchmark:perf
-	go test $(BUILD_TAGS) -benchmem -bench=. ./benchmark
-
-.PHONY: driver-benchmark
-driver-benchmark:perf
-	@go run cmd/godriver-benchmark/main.go | tee perf.suite
-
-perf:driver-test-data.tar.gz
-	tar -zxf $< $(if $(eq $(UNAME_S),Darwin),-s , --transform=s)/testdata/perf/
-	@touch $@
-
-driver-test-data.tar.gz:
-	curl --retry 5 "https://s3.amazonaws.com/boxes.10gen.com/build/driver-test-data.tar.gz" -o driver-test-data.tar.gz --silent --max-time 120

mongo/README.md

@@ -1,251 +0,0 @@
-<p align="center"><img src="etc/assets/mongo-gopher.png" width="250"></p>
-<p align="center">
-  <a href="https://goreportcard.com/report/go.mongodb.org/mongo-driver"><img src="https://goreportcard.com/badge/go.mongodb.org/mongo-driver"></a>
-  <a href="https://pkg.go.dev/go.mongodb.org/mongo-driver/mongo"><img src="etc/assets/godev-mongo-blue.svg" alt="docs"></a>
-  <a href="https://pkg.go.dev/go.mongodb.org/mongo-driver/bson"><img src="etc/assets/godev-bson-blue.svg" alt="docs"></a>
-  <a href="https://www.mongodb.com/docs/drivers/go/current/"><img src="etc/assets/docs-mongodb-green.svg"></a>
-</p>
-
-# MongoDB Go Driver
-
-The MongoDB supported driver for Go.
-
--------------------------
-- [Requirements](#requirements)
-- [Installation](#installation)
-- [Usage](#usage)
-- [Feedback](#feedback)
-- [Testing / Development](#testing--development)
-- [Continuous Integration](#continuous-integration)
-- [License](#license)
-
--------------------------
-## Requirements
-
-- Go 1.13 or higher. We aim to support the latest versions of Go.
-  - Go 1.20 or higher is required to run the driver test suite.
-- MongoDB 3.6 and higher.
-
--------------------------
-## Installation
-
-The recommended way to get started using the MongoDB Go driver is by using Go modules to install the dependency in
-your project. This can be done either by importing packages from `go.mongodb.org/mongo-driver` and having the build
-step install the dependency or by explicitly running
-
-```bash
-go get go.mongodb.org/mongo-driver/mongo
-```
-
-When using a version of Go that does not support modules, the driver can be installed using `dep` by running
-
-```bash
-dep ensure -add "go.mongodb.org/mongo-driver/mongo"
-```
-
--------------------------
-## Usage
-
-To get started with the driver, import the `mongo` package and create a `mongo.Client` with the `Connect` function:
-
-```go
-import (
-    "context"
-    "time"
-
-    "go.mongodb.org/mongo-driver/mongo"
-    "go.mongodb.org/mongo-driver/mongo/options"
-    "go.mongodb.org/mongo-driver/mongo/readpref"
-)
-
-ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-defer cancel()
-client, err := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://localhost:27017"))
-```
-
-Make sure to defer a call to `Disconnect` after instantiating your client:
-
-```go
-defer func() {
-    if err = client.Disconnect(ctx); err != nil {
-        panic(err)
-    }
-}()
-```
-
-For more advanced configuration and authentication, see the [documentation for mongo.Connect](https://pkg.go.dev/go.mongodb.org/mongo-driver/mongo#Connect).
-
-Calling `Connect` does not block for server discovery. If you wish to know if a MongoDB server has been found and connected to,
-use the `Ping` method:
-
-```go
-ctx, cancel = context.WithTimeout(context.Background(), 2*time.Second)
-defer cancel()
-err = client.Ping(ctx, readpref.Primary())
-```
-
-To insert a document into a collection, first retrieve a `Database` and then `Collection` instance from the `Client`:
-
-```go
-collection := client.Database("testing").Collection("numbers")
-```
-
-The `Collection` instance can then be used to insert documents:
-
-```go
-ctx, cancel = context.WithTimeout(context.Background(), 5*time.Second)
-defer cancel()
-res, err := collection.InsertOne(ctx, bson.D{{"name", "pi"}, {"value", 3.14159}})
-id := res.InsertedID
-```
-
-To use `bson.D`, you will need to add `"go.mongodb.org/mongo-driver/bson"` to your imports.
-
-Your import statement should now look like this:
-
-```go
-import (
-    "context"
-    "log"
-    "time"
-
-    "go.mongodb.org/mongo-driver/bson"
-    "go.mongodb.org/mongo-driver/mongo"
-    "go.mongodb.org/mongo-driver/mongo/options"
-    "go.mongodb.org/mongo-driver/mongo/readpref"
-)
-```
-
-Several query methods return a cursor, which can be used like this:
-
-```go
-ctx, cancel = context.WithTimeout(context.Background(), 30*time.Second)
-defer cancel()
-cur, err := collection.Find(ctx, bson.D{})
-if err != nil { log.Fatal(err) }
-defer cur.Close(ctx)
-for cur.Next(ctx) {
-    var result bson.D
-    err := cur.Decode(&result)
-    if err != nil { log.Fatal(err) }
-    // do something with result....
-}
-if err := cur.Err(); err != nil {
-    log.Fatal(err)
-}
-```
-
-For methods that return a single item, a `SingleResult` instance is returned:
-
-```go
-var result struct {
-    Value float64
-}
-filter := bson.D{{"name", "pi"}}
-ctx, cancel = context.WithTimeout(context.Background(), 5*time.Second)
-defer cancel()
-err = collection.FindOne(ctx, filter).Decode(&result)
-if err == mongo.ErrNoDocuments {
-    // Do something when no record was found
-    fmt.Println("record does not exist")
-} else if err != nil {
-    log.Fatal(err)
-}
-// Do something with result...
-```
-
-Additional examples and documentation can be found under the examples directory and [on the MongoDB Documentation website](https://www.mongodb.com/docs/drivers/go/current/).
-
--------------------------
-## Feedback
-
-For help with the driver, please post in the [MongoDB Community Forums](https://developer.mongodb.com/community/forums/tag/golang/).
-
-New features and bugs can be reported on jira: https://jira.mongodb.org/browse/GODRIVER
-
--------------------------
-## Testing / Development
-
-The driver tests can be run against several database configurations. The most simple configuration is a standalone mongod with no auth, no ssl, and no compression. To run these basic driver tests, make sure a standalone MongoDB server instance is running at localhost:27017. To run the tests, you can run `make` (on Windows, run `nmake`). This will run coverage, run go-lint, run go-vet, and build the examples.
-
-### Testing Different Topologies
-
-To test a **replica set** or **sharded cluster**, set `MONGODB_URI="<connection-string>"` for the `make` command.
-For example, for a local replica set named `rs1` comprised of three nodes on ports 27017, 27018, and 27019:
-
-```
-MONGODB_URI="mongodb://localhost:27017,localhost:27018,localhost:27019/?replicaSet=rs1" make
-```
-
-### Testing Auth and TLS
-
-To test authentication and TLS, first set up a MongoDB cluster with auth and TLS configured. Testing authentication requires a user with the `root` role on the `admin` database. Here is an example command that would run a mongod with TLS correctly configured for tests. Either set or replace PATH_TO_SERVER_KEY_FILE and PATH_TO_CA_FILE with paths to their respective files:
-
-```
-mongod \
---auth \
---tlsMode requireTLS \
---tlsCertificateKeyFile $PATH_TO_SERVER_KEY_FILE \
---tlsCAFile $PATH_TO_CA_FILE \
---tlsAllowInvalidCertificates
-```
-
-To run the tests with `make`, set:
-- `MONGO_GO_DRIVER_CA_FILE` to the location of the CA file used by the database
-- `MONGO_GO_DRIVER_KEY_FILE` to the location of the client key file
-- `MONGO_GO_DRIVER_PKCS8_ENCRYPTED_KEY_FILE` to the location of the pkcs8 client key file encrypted with the password string: `password`
-- `MONGO_GO_DRIVER_PKCS8_UNENCRYPTED_KEY_FILE` to the location of the unencrypted pkcs8 key file
-- `MONGODB_URI` to the connection string of the server
-- `AUTH=auth`
-- `SSL=ssl`
-
-For example:
-
-```
-AUTH=auth SSL=ssl \
-MONGO_GO_DRIVER_CA_FILE=$PATH_TO_CA_FILE \
-MONGO_GO_DRIVER_KEY_FILE=$PATH_TO_CLIENT_KEY_FILE \
-MONGO_GO_DRIVER_PKCS8_ENCRYPTED_KEY_FILE=$PATH_TO_ENCRYPTED_KEY_FILE \
-MONGO_GO_DRIVER_PKCS8_UNENCRYPTED_KEY_FILE=$PATH_TO_UNENCRYPTED_KEY_FILE \
-MONGODB_URI="mongodb://user:password@localhost:27017/?authSource=admin" \
-make
-```
-
-Notes:
-- The `--tlsAllowInvalidCertificates` flag is required on the server for the test suite to work correctly.
-- The test suite requires the auth database to be set with `?authSource=admin`, not `/admin`.
-
-### Testing Compression
-
-The MongoDB Go Driver supports wire protocol compression using Snappy, zLib, or zstd. To run tests with wire protocol compression, set `MONGO_GO_DRIVER_COMPRESSOR` to `snappy`, `zlib`, or `zstd`.  For example:
-
-```
-MONGO_GO_DRIVER_COMPRESSOR=snappy make
-```
-
-Ensure the [`--networkMessageCompressors` flag](https://www.mongodb.com/docs/manual/reference/program/mongod/#cmdoption-mongod-networkmessagecompressors) on mongod or mongos includes `zlib` if testing zLib compression.
-
--------------------------
-## Contribution
-
-Check out the [project page](https://jira.mongodb.org/browse/GODRIVER) for tickets that need completing. See our [contribution guidelines](docs/CONTRIBUTING.md) for details.
-
--------------------------
-## Continuous Integration
-
-Commits to master are run automatically on [evergreen](https://evergreen.mongodb.com/waterfall/mongo-go-driver).
-
--------------------------
-## Frequently Encountered Issues
-
-See our [common issues](docs/common-issues.md) documentation for troubleshooting frequently encountered issues.
-
--------------------------
-## Thanks and Acknowledgement
-
-<a href="https://github.com/ashleymcnamara">@ashleymcnamara</a> - Mongo Gopher Artwork
-
--------------------------
-## License
-
-The MongoDB Go Driver is licensed under the [Apache License](LICENSE).

mongo/bson/benchmark_test.go

@@ -1,307 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bson
-
-import (
-	"compress/gzip"
-	"encoding/json"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"path"
-	"testing"
-)
-
-type encodetest struct {
-	Field1String  string
-	Field1Int64   int64
-	Field1Float64 float64
-	Field2String  string
-	Field2Int64   int64
-	Field2Float64 float64
-	Field3String  string
-	Field3Int64   int64
-	Field3Float64 float64
-	Field4String  string
-	Field4Int64   int64
-	Field4Float64 float64
-}
-
-type nestedtest1 struct {
-	Nested nestedtest2
-}
-
-type nestedtest2 struct {
-	Nested nestedtest3
-}
-
-type nestedtest3 struct {
-	Nested nestedtest4
-}
-
-type nestedtest4 struct {
-	Nested nestedtest5
-}
-
-type nestedtest5 struct {
-	Nested nestedtest6
-}
-
-type nestedtest6 struct {
-	Nested nestedtest7
-}
-
-type nestedtest7 struct {
-	Nested nestedtest8
-}
-
-type nestedtest8 struct {
-	Nested nestedtest9
-}
-
-type nestedtest9 struct {
-	Nested nestedtest10
-}
-
-type nestedtest10 struct {
-	Nested nestedtest11
-}
-
-type nestedtest11 struct {
-	Nested encodetest
-}
-
-var encodetestInstance = encodetest{
-	Field1String:  "foo",
-	Field1Int64:   1,
-	Field1Float64: 3.0,
-	Field2String:  "bar",
-	Field2Int64:   2,
-	Field2Float64: 3.1,
-	Field3String:  "baz",
-	Field3Int64:   3,
-	Field3Float64: 3.14,
-	Field4String:  "qux",
-	Field4Int64:   4,
-	Field4Float64: 3.141,
-}
-
-var nestedInstance = nestedtest1{
-	nestedtest2{
-		nestedtest3{
-			nestedtest4{
-				nestedtest5{
-					nestedtest6{
-						nestedtest7{
-							nestedtest8{
-								nestedtest9{
-									nestedtest10{
-										nestedtest11{
-											encodetest{
-												Field1String:  "foo",
-												Field1Int64:   1,
-												Field1Float64: 3.0,
-												Field2String:  "bar",
-												Field2Int64:   2,
-												Field2Float64: 3.1,
-												Field3String:  "baz",
-												Field3Int64:   3,
-												Field3Float64: 3.14,
-												Field4String:  "qux",
-												Field4Int64:   4,
-												Field4Float64: 3.141,
-											},
-										},
-									},
-								},
-							},
-						},
-					},
-				},
-			},
-		},
-	},
-}
-
-const extendedBSONDir = "../testdata/extended_bson"
-
-// readExtJSONFile reads the GZIP-compressed extended JSON document from the given filename in the
-// "extended BSON" test data directory (../testdata/extended_bson) and returns it as a
-// map[string]interface{}. It panics on any errors.
-func readExtJSONFile(filename string) map[string]interface{} {
-	filePath := path.Join(extendedBSONDir, filename)
-	file, err := os.Open(filePath)
-	if err != nil {
-		panic(fmt.Sprintf("error opening file %q: %s", filePath, err))
-	}
-	defer func() {
-		_ = file.Close()
-	}()
-
-	gz, err := gzip.NewReader(file)
-	if err != nil {
-		panic(fmt.Sprintf("error creating GZIP reader: %s", err))
-	}
-	defer func() {
-		_ = gz.Close()
-	}()
-
-	data, err := ioutil.ReadAll(gz)
-	if err != nil {
-		panic(fmt.Sprintf("error reading GZIP contents of file: %s", err))
-	}
-
-	var v map[string]interface{}
-	err = UnmarshalExtJSON(data, false, &v)
-	if err != nil {
-		panic(fmt.Sprintf("error unmarshalling extended JSON: %s", err))
-	}
-
-	return v
-}
-
-func BenchmarkMarshal(b *testing.B) {
-	cases := []struct {
-		desc  string
-		value interface{}
-	}{
-		{
-			desc:  "simple struct",
-			value: encodetestInstance,
-		},
-		{
-			desc:  "nested struct",
-			value: nestedInstance,
-		},
-		{
-			desc:  "deep_bson.json.gz",
-			value: readExtJSONFile("deep_bson.json.gz"),
-		},
-		{
-			desc:  "flat_bson.json.gz",
-			value: readExtJSONFile("flat_bson.json.gz"),
-		},
-		{
-			desc:  "full_bson.json.gz",
-			value: readExtJSONFile("full_bson.json.gz"),
-		},
-	}
-
-	for _, tc := range cases {
-		b.Run(tc.desc, func(b *testing.B) {
-			b.Run("BSON", func(b *testing.B) {
-				for i := 0; i < b.N; i++ {
-					_, err := Marshal(tc.value)
-					if err != nil {
-						b.Errorf("error marshalling BSON: %s", err)
-					}
-				}
-			})
-
-			b.Run("extJSON", func(b *testing.B) {
-				for i := 0; i < b.N; i++ {
-					_, err := MarshalExtJSON(tc.value, true, false)
-					if err != nil {
-						b.Errorf("error marshalling extended JSON: %s", err)
-					}
-				}
-			})
-
-			b.Run("JSON", func(b *testing.B) {
-				for i := 0; i < b.N; i++ {
-					_, err := json.Marshal(tc.value)
-					if err != nil {
-						b.Errorf("error marshalling JSON: %s", err)
-					}
-				}
-			})
-		})
-	}
-}
-
-func BenchmarkUnmarshal(b *testing.B) {
-	cases := []struct {
-		desc  string
-		value interface{}
-	}{
-		{
-			desc:  "simple struct",
-			value: encodetestInstance,
-		},
-		{
-			desc:  "nested struct",
-			value: nestedInstance,
-		},
-		{
-			desc:  "deep_bson.json.gz",
-			value: readExtJSONFile("deep_bson.json.gz"),
-		},
-		{
-			desc:  "flat_bson.json.gz",
-			value: readExtJSONFile("flat_bson.json.gz"),
-		},
-		{
-			desc:  "full_bson.json.gz",
-			value: readExtJSONFile("full_bson.json.gz"),
-		},
-	}
-
-	for _, tc := range cases {
-		b.Run(tc.desc, func(b *testing.B) {
-			b.Run("BSON", func(b *testing.B) {
-				data, err := Marshal(tc.value)
-				if err != nil {
-					b.Errorf("error marshalling BSON: %s", err)
-					return
-				}
-
-				b.ResetTimer()
-				var v2 map[string]interface{}
-				for i := 0; i < b.N; i++ {
-					err := Unmarshal(data, &v2)
-					if err != nil {
-						b.Errorf("error unmarshalling BSON: %s", err)
-					}
-				}
-			})
-
-			b.Run("extJSON", func(b *testing.B) {
-				data, err := MarshalExtJSON(tc.value, true, false)
-				if err != nil {
-					b.Errorf("error marshalling extended JSON: %s", err)
-					return
-				}
-
-				b.ResetTimer()
-				var v2 map[string]interface{}
-				for i := 0; i < b.N; i++ {
-					err := UnmarshalExtJSON(data, true, &v2)
-					if err != nil {
-						b.Errorf("error unmarshalling extended JSON: %s", err)
-					}
-				}
-			})
-
-			b.Run("JSON", func(b *testing.B) {
-				data, err := json.Marshal(tc.value)
-				if err != nil {
-					b.Errorf("error marshalling JSON: %s", err)
-					return
-				}
-
-				b.ResetTimer()
-				var v2 map[string]interface{}
-				for i := 0; i < b.N; i++ {
-					err := json.Unmarshal(data, &v2)
-					if err != nil {
-						b.Errorf("error unmarshalling JSON: %s", err)
-					}
-				}
-			})
-		})
-	}
-}

mongo/bson/bson.go

@@ -1,50 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-//
-// Based on gopkg.in/mgo.v2/bson by Gustavo Niemeyer
-// See THIRD-PARTY-NOTICES for original license terms.
-
-package bson // import "go.mongodb.org/mongo-driver/bson"
-
-import (
-	"go.mongodb.org/mongo-driver/bson/primitive"
-)
-
-// Zeroer allows custom struct types to implement a report of zero
-// state. All struct types that don't implement Zeroer or where IsZero
-// returns false are considered to be not zero.
-type Zeroer interface {
-	IsZero() bool
-}
-
-// D is an ordered representation of a BSON document. This type should be used when the order of the elements matters,
-// such as MongoDB command documents. If the order of the elements does not matter, an M should be used instead.
-//
-// A D should not be constructed with duplicate key names, as that can cause undefined server behavior.
-//
-// Example usage:
-//
-//	bson.D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
-type D = primitive.D
-
-// E represents a BSON element for a D. It is usually used inside a D.
-type E = primitive.E
-
-// M is an unordered representation of a BSON document. This type should be used when the order of the elements does not
-// matter. This type is handled as a regular map[string]interface{} when encoding and decoding. Elements will be
-// serialized in an undefined, random order. If the order of the elements matters, a D should be used instead.
-//
-// Example usage:
-//
-//	bson.M{"foo": "bar", "hello": "world", "pi": 3.14159}
-type M = primitive.M
-
-// An A is an ordered representation of a BSON array.
-//
-// Example usage:
-//
-//	bson.A{"bar", "world", 3.14159, bson.D{{"qux", 12345}}}
-type A = primitive.A

mongo/bson/bson_corpus_spec_test.go

@@ -1,530 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bson
-
-import (
-	"encoding/hex"
-	"encoding/json"
-	"fmt"
-	"math"
-	"os"
-	"path"
-	"strconv"
-	"strings"
-	"testing"
-	"unicode"
-	"unicode/utf8"
-
-	"github.com/google/go-cmp/cmp"
-	"github.com/stretchr/testify/require"
-	"github.com/tidwall/pretty"
-	"go.mongodb.org/mongo-driver/bson/primitive"
-	"go.mongodb.org/mongo-driver/internal/testutil/assert"
-)
-
-type testCase struct {
-	Description  string                `json:"description"`
-	BsonType     string                `json:"bson_type"`
-	TestKey      *string               `json:"test_key"`
-	Valid        []validityTestCase    `json:"valid"`
-	DecodeErrors []decodeErrorTestCase `json:"decodeErrors"`
-	ParseErrors  []parseErrorTestCase  `json:"parseErrors"`
-	Deprecated   *bool                 `json:"deprecated"`
-}
-
-type validityTestCase struct {
-	Description       string  `json:"description"`
-	CanonicalBson     string  `json:"canonical_bson"`
-	CanonicalExtJSON  string  `json:"canonical_extjson"`
-	RelaxedExtJSON    *string `json:"relaxed_extjson"`
-	DegenerateBSON    *string `json:"degenerate_bson"`
-	DegenerateExtJSON *string `json:"degenerate_extjson"`
-	ConvertedBSON     *string `json:"converted_bson"`
-	ConvertedExtJSON  *string `json:"converted_extjson"`
-	Lossy             *bool   `json:"lossy"`
-}
-
-type decodeErrorTestCase struct {
-	Description string `json:"description"`
-	Bson        string `json:"bson"`
-}
-
-type parseErrorTestCase struct {
-	Description string `json:"description"`
-	String      string `json:"string"`
-}
-
-const dataDir = "../testdata/bson-corpus/"
-
-func findJSONFilesInDir(dir string) ([]string, error) {
-	files := make([]string, 0)
-
-	entries, err := os.ReadDir(dir)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, entry := range entries {
-		if entry.IsDir() || path.Ext(entry.Name()) != ".json" {
-			continue
-		}
-
-		files = append(files, entry.Name())
-	}
-
-	return files, nil
-}
-
-// seedExtJSON will add the byte representation of the "extJSON" string to the fuzzer's coprus.
-func seedExtJSON(f *testing.F, extJSON string, extJSONType string, desc string) {
-	jbytes, err := jsonToBytes(extJSON, extJSONType, desc)
-	if err != nil {
-		f.Fatalf("failed to convert JSON to bytes: %v", err)
-	}
-
-	f.Add(jbytes)
-}
-
-// seedTestCase will add the byte representation for each "extJSON" string of each valid test case to the fuzzer's
-// corpus.
-func seedTestCase(f *testing.F, tcase *testCase) {
-	for _, vtc := range tcase.Valid {
-		seedExtJSON(f, vtc.CanonicalExtJSON, "canonical", vtc.Description)
-
-		// Seed the relaxed extended JSON.
-		if vtc.RelaxedExtJSON != nil {
-			seedExtJSON(f, *vtc.RelaxedExtJSON, "relaxed", vtc.Description)
-		}
-
-		// Seed the degenerate extended JSON.
-		if vtc.DegenerateExtJSON != nil {
-			seedExtJSON(f, *vtc.DegenerateExtJSON, "degenerate", vtc.Description)
-		}
-
-		// Seed the converted extended JSON.
-		if vtc.ConvertedExtJSON != nil {
-			seedExtJSON(f, *vtc.ConvertedExtJSON, "converted", vtc.Description)
-		}
-	}
-}
-
-// seedBSONCorpus will unmarshal the data from "testdata/bson-corpus" into a slice of "testCase" structs and then
-// marshal the "*_extjson" field of each "validityTestCase" into a slice of bytes to seed the fuzz corpus.
-func seedBSONCorpus(f *testing.F) {
-	fileNames, err := findJSONFilesInDir(dataDir)
-	if err != nil {
-		f.Fatalf("failed to find JSON files in directory %q: %v", dataDir, err)
-	}
-
-	for _, fileName := range fileNames {
-		filePath := path.Join(dataDir, fileName)
-
-		file, err := os.Open(filePath)
-		if err != nil {
-			f.Fatalf("failed to open file %q: %v", filePath, err)
-		}
-
-		var tcase testCase
-		if err := json.NewDecoder(file).Decode(&tcase); err != nil {
-			f.Fatal(err)
-		}
-
-		seedTestCase(f, &tcase)
-	}
-}
-
-func needsEscapedUnicode(bsonType string) bool {
-	return bsonType == "0x02" || bsonType == "0x0D" || bsonType == "0x0E" || bsonType == "0x0F"
-}
-
-func unescapeUnicode(s, bsonType string) string {
-	if !needsEscapedUnicode(bsonType) {
-		return s
-	}
-
-	newS := ""
-
-	for i := 0; i < len(s); i++ {
-		c := s[i]
-		switch c {
-		case '\\':
-			switch s[i+1] {
-			case 'u':
-				us := s[i : i+6]
-				u, err := strconv.Unquote(strings.Replace(strconv.Quote(us), `\\u`, `\u`, 1))
-				if err != nil {
-					return ""
-				}
-				for _, r := range u {
-					if r < ' ' {
-						newS += fmt.Sprintf(`\u%04x`, r)
-					} else {
-						newS += string(r)
-					}
-				}
-				i += 5
-			default:
-				newS += string(c)
-			}
-		default:
-			if c > unicode.MaxASCII {
-				r, size := utf8.DecodeRune([]byte(s[i:]))
-				newS += string(r)
-				i += size - 1
-			} else {
-				newS += string(c)
-			}
-		}
-	}
-
-	return newS
-}
-
-func formatDouble(f float64) string {
-	var s string
-	if math.IsInf(f, 1) {
-		s = "Infinity"
-	} else if math.IsInf(f, -1) {
-		s = "-Infinity"
-	} else if math.IsNaN(f) {
-		s = "NaN"
-	} else {
-		// Print exactly one decimalType place for integers; otherwise, print as many are necessary to
-		// perfectly represent it.
-		s = strconv.FormatFloat(f, 'G', -1, 64)
-		if !strings.ContainsRune(s, 'E') && !strings.ContainsRune(s, '.') {
-			s += ".0"
-		}
-	}
-
-	return s
-}
-
-func normalizeCanonicalDouble(t *testing.T, key string, cEJ string) string {
-	// Unmarshal string into map
-	cEJMap := make(map[string]map[string]string)
-	err := json.Unmarshal([]byte(cEJ), &cEJMap)
-	require.NoError(t, err)
-
-	// Parse the float contained by the map.
-	expectedString := cEJMap[key]["$numberDouble"]
-	expectedFloat, err := strconv.ParseFloat(expectedString, 64)
-	require.NoError(t, err)
-
-	// Normalize the string
-	return fmt.Sprintf(`{"%s":{"$numberDouble":"%s"}}`, key, formatDouble(expectedFloat))
-}
-
-func normalizeRelaxedDouble(t *testing.T, key string, rEJ string) string {
-	// Unmarshal string into map
-	rEJMap := make(map[string]float64)
-	err := json.Unmarshal([]byte(rEJ), &rEJMap)
-	if err != nil {
-		return normalizeCanonicalDouble(t, key, rEJ)
-	}
-
-	// Parse the float contained by the map.
-	expectedFloat := rEJMap[key]
-
-	// Normalize the string
-	return fmt.Sprintf(`{"%s":%s}`, key, formatDouble(expectedFloat))
-}
-
-// bsonToNative decodes the BSON bytes (b) into a native Document
-func bsonToNative(t *testing.T, b []byte, bType, testDesc string) D {
-	var doc D
-	err := Unmarshal(b, &doc)
-	expectNoError(t, err, fmt.Sprintf("%s: decoding %s BSON", testDesc, bType))
-	return doc
-}
-
-// nativeToBSON encodes the native Document (doc) into canonical BSON and compares it to the expected
-// canonical BSON (cB)
-func nativeToBSON(t *testing.T, cB []byte, doc D, testDesc, bType, docSrcDesc string) {
-	actual, err := Marshal(doc)
-	expectNoError(t, err, fmt.Sprintf("%s: encoding %s BSON", testDesc, bType))
-
-	if diff := cmp.Diff(cB, actual); diff != "" {
-		t.Errorf("%s: 'native_to_bson(%s) = cB' failed (-want, +got):\n-%v\n+%v\n",
-			testDesc, docSrcDesc, cB, actual)
-		t.FailNow()
-	}
-}
-
-// jsonToNative decodes the extended JSON string (ej) into a native Document
-func jsonToNative(ej, ejType, testDesc string) (D, error) {
-	var doc D
-	if err := UnmarshalExtJSON([]byte(ej), ejType != "relaxed", &doc); err != nil {
-		return nil, fmt.Errorf("%s: decoding %s extended JSON: %w", testDesc, ejType, err)
-	}
-	return doc, nil
-}
-
-// jsonToBytes decodes the extended JSON string (ej) into canonical BSON and then encodes it into a byte slice.
-func jsonToBytes(ej, ejType, testDesc string) ([]byte, error) {
-	native, err := jsonToNative(ej, ejType, testDesc)
-	if err != nil {
-		return nil, err
-	}
-
-	b, err := Marshal(native)
-	if err != nil {
-		return nil, fmt.Errorf("%s: encoding %s BSON: %w", testDesc, ejType, err)
-	}
-
-	return b, nil
-}
-
-// nativeToJSON encodes the native Document (doc) into an extended JSON string
-func nativeToJSON(t *testing.T, ej string, doc D, testDesc, ejType, ejShortName, docSrcDesc string) {
-	actualEJ, err := MarshalExtJSON(doc, ejType != "relaxed", true)
-	expectNoError(t, err, fmt.Sprintf("%s: encoding %s extended JSON", testDesc, ejType))
-
-	if diff := cmp.Diff(ej, string(actualEJ)); diff != "" {
-		t.Errorf("%s: 'native_to_%s_extended_json(%s) = %s' failed (-want, +got):\n%s\n",
-			testDesc, ejType, docSrcDesc, ejShortName, diff)
-		t.FailNow()
-	}
-}
-
-func runTest(t *testing.T, file string) {
-	filepath := path.Join(dataDir, file)
-	content, err := os.ReadFile(filepath)
-	require.NoError(t, err)
-
-	// Remove ".json" from filename.
-	file = file[:len(file)-5]
-	testName := "bson_corpus--" + file
-
-	t.Run(testName, func(t *testing.T) {
-		var test testCase
-		require.NoError(t, json.Unmarshal(content, &test))
-
-		t.Run("valid", func(t *testing.T) {
-			for _, v := range test.Valid {
-				t.Run(v.Description, func(t *testing.T) {
-					// get canonical BSON
-					cB, err := hex.DecodeString(v.CanonicalBson)
-					expectNoError(t, err, fmt.Sprintf("%s: reading canonical BSON", v.Description))
-
-					// get canonical extended JSON
-					cEJ := unescapeUnicode(string(pretty.Ugly([]byte(v.CanonicalExtJSON))), test.BsonType)
-					if test.BsonType == "0x01" {
-						cEJ = normalizeCanonicalDouble(t, *test.TestKey, cEJ)
-					}
-
-					/*** canonical BSON round-trip tests ***/
-					doc := bsonToNative(t, cB, "canonical", v.Description)
-
-					// native_to_bson(bson_to_native(cB)) = cB
-					nativeToBSON(t, cB, doc, v.Description, "canonical", "bson_to_native(cB)")
-
-					// native_to_canonical_extended_json(bson_to_native(cB)) = cEJ
-					nativeToJSON(t, cEJ, doc, v.Description, "canonical", "cEJ", "bson_to_native(cB)")
-
-					// native_to_relaxed_extended_json(bson_to_native(cB)) = rEJ (if rEJ exists)
-					if v.RelaxedExtJSON != nil {
-						rEJ := unescapeUnicode(string(pretty.Ugly([]byte(*v.RelaxedExtJSON))), test.BsonType)
-						if test.BsonType == "0x01" {
-							rEJ = normalizeRelaxedDouble(t, *test.TestKey, rEJ)
-						}
-
-						nativeToJSON(t, rEJ, doc, v.Description, "relaxed", "rEJ", "bson_to_native(cB)")
-
-						/*** relaxed extended JSON round-trip tests (if exists) ***/
-						doc, err = jsonToNative(rEJ, "relaxed", v.Description)
-						require.NoError(t, err)
-
-						// native_to_relaxed_extended_json(json_to_native(rEJ)) = rEJ
-						nativeToJSON(t, rEJ, doc, v.Description, "relaxed", "eJR", "json_to_native(rEJ)")
-					}
-
-					/*** canonical extended JSON round-trip tests ***/
-					doc, err = jsonToNative(cEJ, "canonical", v.Description)
-					require.NoError(t, err)
-
-					// native_to_canonical_extended_json(json_to_native(cEJ)) = cEJ
-					nativeToJSON(t, cEJ, doc, v.Description, "canonical", "cEJ", "json_to_native(cEJ)")
-
-					// native_to_bson(json_to_native(cEJ)) = cb (unless lossy)
-					if v.Lossy == nil || !*v.Lossy {
-						nativeToBSON(t, cB, doc, v.Description, "canonical", "json_to_native(cEJ)")
-					}
-
-					/*** degenerate BSON round-trip tests (if exists) ***/
-					if v.DegenerateBSON != nil {
-						dB, err := hex.DecodeString(*v.DegenerateBSON)
-						expectNoError(t, err, fmt.Sprintf("%s: reading degenerate BSON", v.Description))
-
-						doc = bsonToNative(t, dB, "degenerate", v.Description)
-
-						// native_to_bson(bson_to_native(dB)) = cB
-						nativeToBSON(t, cB, doc, v.Description, "degenerate", "bson_to_native(dB)")
-					}
-
-					/*** degenerate JSON round-trip tests (if exists) ***/
-					if v.DegenerateExtJSON != nil {
-						dEJ := unescapeUnicode(string(pretty.Ugly([]byte(*v.DegenerateExtJSON))), test.BsonType)
-						if test.BsonType == "0x01" {
-							dEJ = normalizeCanonicalDouble(t, *test.TestKey, dEJ)
-						}
-
-						doc, err = jsonToNative(dEJ, "degenerate canonical", v.Description)
-						require.NoError(t, err)
-
-						// native_to_canonical_extended_json(json_to_native(dEJ)) = cEJ
-						nativeToJSON(t, cEJ, doc, v.Description, "degenerate canonical", "cEJ", "json_to_native(dEJ)")
-
-						// native_to_bson(json_to_native(dEJ)) = cB (unless lossy)
-						if v.Lossy == nil || !*v.Lossy {
-							nativeToBSON(t, cB, doc, v.Description, "canonical", "json_to_native(dEJ)")
-						}
-					}
-				})
-			}
-		})
-
-		t.Run("decode error", func(t *testing.T) {
-			for _, d := range test.DecodeErrors {
-				t.Run(d.Description, func(t *testing.T) {
-					b, err := hex.DecodeString(d.Bson)
-					expectNoError(t, err, d.Description)
-
-					var doc D
-					err = Unmarshal(b, &doc)
-
-					// The driver unmarshals invalid UTF-8 strings without error. Loop over the unmarshalled elements
-					// and assert that there was no error if any of the string or DBPointer values contain invalid UTF-8
-					// characters.
-					for _, elem := range doc {
-						str, ok := elem.Value.(string)
-						invalidString := ok && !utf8.ValidString(str)
-						dbPtr, ok := elem.Value.(primitive.DBPointer)
-						invalidDBPtr := ok && !utf8.ValidString(dbPtr.DB)
-
-						if invalidString || invalidDBPtr {
-							expectNoError(t, err, d.Description)
-							return
-						}
-					}
-
-					expectError(t, err, fmt.Sprintf("%s: expected decode error", d.Description))
-				})
-			}
-		})
-
-		t.Run("parse error", func(t *testing.T) {
-			for _, p := range test.ParseErrors {
-				t.Run(p.Description, func(t *testing.T) {
-					s := unescapeUnicode(p.String, test.BsonType)
-					if test.BsonType == "0x13" {
-						s = fmt.Sprintf(`{"decimal128": {"$numberDecimal": "%s"}}`, s)
-					}
-
-					switch test.BsonType {
-					case "0x00", "0x05", "0x13":
-						var doc D
-						err := UnmarshalExtJSON([]byte(s), true, &doc)
-						// Null bytes are validated when marshaling to BSON
-						if strings.Contains(p.Description, "Null") {
-							_, err = Marshal(doc)
-						}
-						expectError(t, err, fmt.Sprintf("%s: expected parse error", p.Description))
-					default:
-						t.Errorf("Update test to check for parse errors for type %s", test.BsonType)
-						t.Fail()
-					}
-				})
-			}
-		})
-	})
-}
-
-func Test_BsonCorpus(t *testing.T) {
-	jsonFiles, err := findJSONFilesInDir(dataDir)
-	if err != nil {
-		t.Fatalf("error finding JSON files in %s: %v", dataDir, err)
-	}
-
-	for _, file := range jsonFiles {
-		runTest(t, file)
-	}
-}
-
-func expectNoError(t *testing.T, err error, desc string) {
-	if err != nil {
-		t.Helper()
-		t.Errorf("%s: Unepexted error: %v", desc, err)
-		t.FailNow()
-	}
-}
-
-func expectError(t *testing.T, err error, desc string) {
-	if err == nil {
-		t.Helper()
-		t.Errorf("%s: Expected error", desc)
-		t.FailNow()
-	}
-}
-
-func TestRelaxedUUIDValidation(t *testing.T) {
-	testCases := []struct {
-		description       string
-		canonicalExtJSON  string
-		degenerateExtJSON string
-		expectedErr       string
-	}{
-		{
-			"valid uuid",
-			"{\"x\" : { \"$binary\" : {\"base64\" : \"c//SZESzTGmQ6OfR38A11A==\", \"subType\" : \"04\"}}}",
-			"{\"x\" : { \"$uuid\" : \"73ffd264-44b3-4c69-90e8-e7d1dfc035d4\"}}",
-			"",
-		},
-		{
-			"invalid uuid--no hyphens",
-			"",
-			"{\"x\" : { \"$uuid\" : \"73ffd26444b34c6990e8e7d1dfc035d4\"}}",
-			"$uuid value does not follow RFC 4122 format regarding length and hyphens",
-		},
-		{
-			"invalid uuid--trailing hyphens",
-			"",
-			"{\"x\" : { \"$uuid\" : \"73ffd264-44b3-4c69-90e8-e7d1dfc035--\"}}",
-			"$uuid value does not follow RFC 4122 format regarding length and hyphens",
-		},
-		{
-			"invalid uuid--malformed hex",
-			"",
-			"{\"x\" : { \"$uuid\" : \"q3@fd26l-44b3-4c69-90e8-e7d1dfc035d4\"}}",
-			"$uuid value does not follow RFC 4122 format regarding hex bytes: encoding/hex: invalid byte: U+0071 'q'",
-		},
-	}
-
-	for _, tc := range testCases {
-		t.Run(tc.description, func(t *testing.T) {
-			// get canonical extended JSON
-			cEJ := unescapeUnicode(string(pretty.Ugly([]byte(tc.canonicalExtJSON))), "0x05")
-
-			// get degenerate extended JSON
-			dEJ := unescapeUnicode(string(pretty.Ugly([]byte(tc.degenerateExtJSON))), "0x05")
-
-			// convert dEJ to native doc
-			var doc D
-			err := UnmarshalExtJSON([]byte(dEJ), true, &doc)
-
-			if tc.expectedErr != "" {
-				assert.Equal(t, tc.expectedErr, err.Error(), "expected error %v, got %v", tc.expectedErr, err)
-			} else {
-				assert.Nil(t, err, "expected no error, got error: %v", err)
-
-				// Marshal doc into extended JSON and compare with cEJ
-				nativeToJSON(t, cEJ, doc, tc.description, "degenerate canonical", "cEJ", "json_to_native(dEJ)")
-			}
-		})
-	}
-
-}

mongo/bson/bson_test.go

@@ -1,279 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bson
-
-import (
-	"bytes"
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/google/go-cmp/cmp"
-	"go.mongodb.org/mongo-driver/bson/bsoncodec"
-	"go.mongodb.org/mongo-driver/bson/bsonoptions"
-	"go.mongodb.org/mongo-driver/bson/bsontype"
-	"go.mongodb.org/mongo-driver/internal/testutil/assert"
-	"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
-)
-
-func noerr(t *testing.T, err error) {
-	if err != nil {
-		t.Helper()
-		t.Errorf("Unexpected error: (%T)%v", err, err)
-		t.FailNow()
-	}
-}
-
-func TestTimeRoundTrip(t *testing.T) {
-	val := struct {
-		Value time.Time
-		ID    string
-	}{
-		ID: "time-rt-test",
-	}
-
-	if !val.Value.IsZero() {
-		t.Errorf("Did not get zero time as expected.")
-	}
-
-	bsonOut, err := Marshal(val)
-	noerr(t, err)
-	rtval := struct {
-		Value time.Time
-		ID    string
-	}{}
-
-	err = Unmarshal(bsonOut, &rtval)
-	noerr(t, err)
-	if !cmp.Equal(val, rtval) {
-		t.Errorf("Did not round trip properly. got %v; want %v", val, rtval)
-	}
-	if !rtval.Value.IsZero() {
-		t.Errorf("Did not get zero time as expected.")
-	}
-}
-
-func TestNonNullTimeRoundTrip(t *testing.T) {
-	now := time.Now()
-	now = time.Unix(now.Unix(), 0)
-	val := struct {
-		Value time.Time
-		ID    string
-	}{
-		ID:    "time-rt-test",
-		Value: now,
-	}
-
-	bsonOut, err := Marshal(val)
-	noerr(t, err)
-	rtval := struct {
-		Value time.Time
-		ID    string
-	}{}
-
-	err = Unmarshal(bsonOut, &rtval)
-	noerr(t, err)
-	if !cmp.Equal(val, rtval) {
-		t.Errorf("Did not round trip properly. got %v; want %v", val, rtval)
-	}
-}
-
-func TestD(t *testing.T) {
-	t.Run("can marshal", func(t *testing.T) {
-		d := D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
-		idx, want := bsoncore.AppendDocumentStart(nil)
-		want = bsoncore.AppendStringElement(want, "foo", "bar")
-		want = bsoncore.AppendStringElement(want, "hello", "world")
-		want = bsoncore.AppendDoubleElement(want, "pi", 3.14159)
-		want, err := bsoncore.AppendDocumentEnd(want, idx)
-		noerr(t, err)
-		got, err := Marshal(d)
-		noerr(t, err)
-		if !bytes.Equal(got, want) {
-			t.Errorf("Marshaled documents do not match. got %v; want %v", Raw(got), Raw(want))
-		}
-	})
-	t.Run("can unmarshal", func(t *testing.T) {
-		want := D{{"foo", "bar"}, {"hello", "world"}, {"pi", 3.14159}}
-		idx, doc := bsoncore.AppendDocumentStart(nil)
-		doc = bsoncore.AppendStringElement(doc, "foo", "bar")
-		doc = bsoncore.AppendStringElement(doc, "hello", "world")
-		doc = bsoncore.AppendDoubleElement(doc, "pi", 3.14159)
-		doc, err := bsoncore.AppendDocumentEnd(doc, idx)
-		noerr(t, err)
-		var got D
-		err = Unmarshal(doc, &got)
-		noerr(t, err)
-		if !cmp.Equal(got, want) {
-			t.Errorf("Unmarshaled documents do not match. got %v; want %v", got, want)
-		}
-	})
-}
-
-type stringerString string
-
-func (ss stringerString) String() string {
-	return "bar"
-}
-
-type keyBool bool
-
-func (kb keyBool) MarshalKey() (string, error) {
-	return fmt.Sprintf("%v", kb), nil
-}
-
-func (kb *keyBool) UnmarshalKey(key string) error {
-	switch key {
-	case "true":
-		*kb = true
-	case "false":
-		*kb = false
-	default:
-		return fmt.Errorf("invalid bool value %v", key)
-	}
-	return nil
-}
-
-type keyStruct struct {
-	val int64
-}
-
-func (k keyStruct) MarshalText() (text []byte, err error) {
-	str := strconv.FormatInt(k.val, 10)
-
-	return []byte(str), nil
-}
-
-func (k *keyStruct) UnmarshalText(text []byte) error {
-	val, err := strconv.ParseInt(string(text), 10, 64)
-	if err != nil {
-		return err
-	}
-
-	*k = keyStruct{
-		val: val,
-	}
-
-	return nil
-}
-
-func TestMapCodec(t *testing.T) {
-	t.Run("EncodeKeysWithStringer", func(t *testing.T) {
-		strstr := stringerString("foo")
-		mapObj := map[stringerString]int{strstr: 1}
-		testCases := []struct {
-			name string
-			opts *bsonoptions.MapCodecOptions
-			key  string
-		}{
-			{"default", bsonoptions.MapCodec(), "foo"},
-			{"true", bsonoptions.MapCodec().SetEncodeKeysWithStringer(true), "bar"},
-			{"false", bsonoptions.MapCodec().SetEncodeKeysWithStringer(false), "foo"},
-		}
-		for _, tc := range testCases {
-			t.Run(tc.name, func(t *testing.T) {
-				mapCodec := bsoncodec.NewMapCodec(tc.opts)
-				mapRegistry := NewRegistryBuilder().RegisterDefaultEncoder(reflect.Map, mapCodec).Build()
-				val, err := MarshalWithRegistry(mapRegistry, mapObj)
-				assert.Nil(t, err, "Marshal error: %v", err)
-				assert.True(t, strings.Contains(string(val), tc.key), "expected result to contain %v, got: %v", tc.key, string(val))
-			})
-		}
-	})
-
-	t.Run("keys implements keyMarshaler and keyUnmarshaler", func(t *testing.T) {
-		mapObj := map[keyBool]int{keyBool(true): 1}
-
-		doc, err := Marshal(mapObj)
-		assert.Nil(t, err, "Marshal error: %v", err)
-		idx, want := bsoncore.AppendDocumentStart(nil)
-		want = bsoncore.AppendInt32Element(want, "true", 1)
-		want, _ = bsoncore.AppendDocumentEnd(want, idx)
-		assert.Equal(t, want, doc, "expected result %v, got %v", string(want), string(doc))
-
-		var got map[keyBool]int
-		err = Unmarshal(doc, &got)
-		assert.Nil(t, err, "Unmarshal error: %v", err)
-		assert.Equal(t, mapObj, got, "expected result %v, got %v", mapObj, got)
-
-	})
-
-	t.Run("keys implements encoding.TextMarshaler and encoding.TextUnmarshaler", func(t *testing.T) {
-		mapObj := map[keyStruct]int{
-			{val: 10}: 100,
-		}
-
-		doc, err := Marshal(mapObj)
-		assert.Nil(t, err, "Marshal error: %v", err)
-		idx, want := bsoncore.AppendDocumentStart(nil)
-		want = bsoncore.AppendInt32Element(want, "10", 100)
-		want, _ = bsoncore.AppendDocumentEnd(want, idx)
-		assert.Equal(t, want, doc, "expected result %v, got %v", string(want), string(doc))
-
-		var got map[keyStruct]int
-		err = Unmarshal(doc, &got)
-		assert.Nil(t, err, "Unmarshal error: %v", err)
-		assert.Equal(t, mapObj, got, "expected result %v, got %v", mapObj, got)
-
-	})
-}
-
-func TestExtJSONEscapeKey(t *testing.T) {
-	doc := D{{Key: "\\usb#", Value: int32(1)}}
-	b, err := MarshalExtJSON(&doc, false, false)
-	noerr(t, err)
-
-	want := "{\"\\\\usb#\":1}"
-	if diff := cmp.Diff(want, string(b)); diff != "" {
-		t.Errorf("Marshaled documents do not match. got %v, want %v", string(b), want)
-	}
-
-	var got D
-	err = UnmarshalExtJSON(b, false, &got)
-	noerr(t, err)
-	if !cmp.Equal(got, doc) {
-		t.Errorf("Unmarshaled documents do not match. got %v; want %v", got, doc)
-	}
-}
-
-func TestBsoncoreArray(t *testing.T) {
-	type BSONDocumentArray struct {
-		Array []D `bson:"array"`
-	}
-
-	type BSONArray struct {
-		Array bsoncore.Array `bson:"array"`
-	}
-
-	bda := BSONDocumentArray{
-		Array: []D{
-			{{"x", 1}},
-			{{"x", 2}},
-			{{"x", 3}},
-		},
-	}
-
-	expectedBSON, err := Marshal(bda)
-	assert.Nil(t, err, "Marshal bsoncore.Document array error: %v", err)
-
-	var ba BSONArray
-	err = Unmarshal(expectedBSON, &ba)
-	assert.Nil(t, err, "Unmarshal error: %v", err)
-
-	actualBSON, err := Marshal(ba)
-	assert.Nil(t, err, "Marshal bsoncore.Array error: %v", err)
-
-	assert.Equal(t, expectedBSON, actualBSON,
-		"expected BSON to be %v after Marshalling again; got %v", expectedBSON, actualBSON)
-
-	doc := bsoncore.Document(actualBSON)
-	v := doc.Lookup("array")
-	assert.Equal(t, bsontype.Array, v.Type, "expected type array, got %v", v.Type)
-}

mongo/bson/bsoncodec/array_codec.go

@@ -1,50 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bsoncodec
-
-import (
-	"reflect"
-
-	"go.mongodb.org/mongo-driver/bson/bsonrw"
-	"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
-)
-
-// ArrayCodec is the Codec used for bsoncore.Array values.
-type ArrayCodec struct{}
-
-var defaultArrayCodec = NewArrayCodec()
-
-// NewArrayCodec returns an ArrayCodec.
-func NewArrayCodec() *ArrayCodec {
-	return &ArrayCodec{}
-}
-
-// EncodeValue is the ValueEncoder for bsoncore.Array values.
-func (ac *ArrayCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
-	if !val.IsValid() || val.Type() != tCoreArray {
-		return ValueEncoderError{Name: "CoreArrayEncodeValue", Types: []reflect.Type{tCoreArray}, Received: val}
-	}
-
-	arr := val.Interface().(bsoncore.Array)
-	return bsonrw.Copier{}.CopyArrayFromBytes(vw, arr)
-}
-
-// DecodeValue is the ValueDecoder for bsoncore.Array values.
-func (ac *ArrayCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
-	if !val.CanSet() || val.Type() != tCoreArray {
-		return ValueDecoderError{Name: "CoreArrayDecodeValue", Types: []reflect.Type{tCoreArray}, Received: val}
-	}
-
-	if val.IsNil() {
-		val.Set(reflect.MakeSlice(val.Type(), 0, 0))
-	}
-
-	val.SetLen(0)
-	arr, err := bsonrw.Copier{}.AppendArrayBytes(val.Interface().(bsoncore.Array), vr)
-	val.Set(reflect.ValueOf(arr))
-	return err
-}

mongo/bson/bsoncodec/bsoncodec.go

@@ -1,238 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bsoncodec // import "go.mongodb.org/mongo-driver/bson/bsoncodec"
-
-import (
-	"fmt"
-	"reflect"
-	"strings"
-
-	"go.mongodb.org/mongo-driver/bson/bsonrw"
-	"go.mongodb.org/mongo-driver/bson/bsontype"
-	"go.mongodb.org/mongo-driver/bson/primitive"
-)
-
-var (
-	emptyValue = reflect.Value{}
-)
-
-// Marshaler is an interface implemented by types that can marshal themselves
-// into a BSON document represented as bytes. The bytes returned must be a valid
-// BSON document if the error is nil.
-type Marshaler interface {
-	MarshalBSON() ([]byte, error)
-}
-
-// ValueMarshaler is an interface implemented by types that can marshal
-// themselves into a BSON value as bytes. The type must be the valid type for
-// the bytes returned. The bytes and byte type together must be valid if the
-// error is nil.
-type ValueMarshaler interface {
-	MarshalBSONValue() (bsontype.Type, []byte, error)
-}
-
-// Unmarshaler is an interface implemented by types that can unmarshal a BSON
-// document representation of themselves. The BSON bytes can be assumed to be
-// valid. UnmarshalBSON must copy the BSON bytes if it wishes to retain the data
-// after returning.
-type Unmarshaler interface {
-	UnmarshalBSON([]byte) error
-}
-
-// ValueUnmarshaler is an interface implemented by types that can unmarshal a
-// BSON value representation of themselves. The BSON bytes and type can be
-// assumed to be valid. UnmarshalBSONValue must copy the BSON value bytes if it
-// wishes to retain the data after returning.
-type ValueUnmarshaler interface {
-	UnmarshalBSONValue(bsontype.Type, []byte) error
-}
-
-// ValueEncoderError is an error returned from a ValueEncoder when the provided value can't be
-// encoded by the ValueEncoder.
-type ValueEncoderError struct {
-	Name     string
-	Types    []reflect.Type
-	Kinds    []reflect.Kind
-	Received reflect.Value
-}
-
-func (vee ValueEncoderError) Error() string {
-	typeKinds := make([]string, 0, len(vee.Types)+len(vee.Kinds))
-	for _, t := range vee.Types {
-		typeKinds = append(typeKinds, t.String())
-	}
-	for _, k := range vee.Kinds {
-		if k == reflect.Map {
-			typeKinds = append(typeKinds, "map[string]*")
-			continue
-		}
-		typeKinds = append(typeKinds, k.String())
-	}
-	received := vee.Received.Kind().String()
-	if vee.Received.IsValid() {
-		received = vee.Received.Type().String()
-	}
-	return fmt.Sprintf("%s can only encode valid %s, but got %s", vee.Name, strings.Join(typeKinds, ", "), received)
-}
-
-// ValueDecoderError is an error returned from a ValueDecoder when the provided value can't be
-// decoded by the ValueDecoder.
-type ValueDecoderError struct {
-	Name     string
-	Types    []reflect.Type
-	Kinds    []reflect.Kind
-	Received reflect.Value
-}
-
-func (vde ValueDecoderError) Error() string {
-	typeKinds := make([]string, 0, len(vde.Types)+len(vde.Kinds))
-	for _, t := range vde.Types {
-		typeKinds = append(typeKinds, t.String())
-	}
-	for _, k := range vde.Kinds {
-		if k == reflect.Map {
-			typeKinds = append(typeKinds, "map[string]*")
-			continue
-		}
-		typeKinds = append(typeKinds, k.String())
-	}
-	received := vde.Received.Kind().String()
-	if vde.Received.IsValid() {
-		received = vde.Received.Type().String()
-	}
-	return fmt.Sprintf("%s can only decode valid and settable %s, but got %s", vde.Name, strings.Join(typeKinds, ", "), received)
-}
-
-// EncodeContext is the contextual information required for a Codec to encode a
-// value.
-type EncodeContext struct {
-	*Registry
-	MinSize bool
-}
-
-// DecodeContext is the contextual information required for a Codec to decode a
-// value.
-type DecodeContext struct {
-	*Registry
-	Truncate bool
-
-	// Ancestor is the type of a containing document. This is mainly used to determine what type
-	// should be used when decoding an embedded document into an empty interface. For example, if
-	// Ancestor is a bson.M, BSON embedded document values being decoded into an empty interface
-	// will be decoded into a bson.M.
-	//
-	// Deprecated: Use DefaultDocumentM or DefaultDocumentD instead.
-	Ancestor reflect.Type
-
-	// defaultDocumentType specifies the Go type to decode top-level and nested BSON documents into. In particular, the
-	// usage for this field is restricted to data typed as "interface{}" or "map[string]interface{}". If DocumentType is
-	// set to a type that a BSON document cannot be unmarshaled into (e.g. "string"), unmarshalling will result in an
-	// error. DocumentType overrides the Ancestor field.
-	defaultDocumentType reflect.Type
-}
-
-// DefaultDocumentM will decode empty documents using the primitive.M type. This behavior is restricted to data typed as
-// "interface{}" or "map[string]interface{}".
-func (dc *DecodeContext) DefaultDocumentM() {
-	dc.defaultDocumentType = reflect.TypeOf(primitive.M{})
-}
-
-// DefaultDocumentD will decode empty documents using the primitive.D type. This behavior is restricted to data typed as
-// "interface{}" or "map[string]interface{}".
-func (dc *DecodeContext) DefaultDocumentD() {
-	dc.defaultDocumentType = reflect.TypeOf(primitive.D{})
-}
-
-// ValueCodec is the interface that groups the methods to encode and decode
-// values.
-type ValueCodec interface {
-	ValueEncoder
-	ValueDecoder
-}
-
-// ValueEncoder is the interface implemented by types that can handle the encoding of a value.
-type ValueEncoder interface {
-	EncodeValue(EncodeContext, bsonrw.ValueWriter, reflect.Value) error
-}
-
-// ValueEncoderFunc is an adapter function that allows a function with the correct signature to be
-// used as a ValueEncoder.
-type ValueEncoderFunc func(EncodeContext, bsonrw.ValueWriter, reflect.Value) error
-
-// EncodeValue implements the ValueEncoder interface.
-func (fn ValueEncoderFunc) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
-	return fn(ec, vw, val)
-}
-
-// ValueDecoder is the interface implemented by types that can handle the decoding of a value.
-type ValueDecoder interface {
-	DecodeValue(DecodeContext, bsonrw.ValueReader, reflect.Value) error
-}
-
-// ValueDecoderFunc is an adapter function that allows a function with the correct signature to be
-// used as a ValueDecoder.
-type ValueDecoderFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) error
-
-// DecodeValue implements the ValueDecoder interface.
-func (fn ValueDecoderFunc) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
-	return fn(dc, vr, val)
-}
-
-// typeDecoder is the interface implemented by types that can handle the decoding of a value given its type.
-type typeDecoder interface {
-	decodeType(DecodeContext, bsonrw.ValueReader, reflect.Type) (reflect.Value, error)
-}
-
-// typeDecoderFunc is an adapter function that allows a function with the correct signature to be used as a typeDecoder.
-type typeDecoderFunc func(DecodeContext, bsonrw.ValueReader, reflect.Type) (reflect.Value, error)
-
-func (fn typeDecoderFunc) decodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
-	return fn(dc, vr, t)
-}
-
-// decodeAdapter allows two functions with the correct signatures to be used as both a ValueDecoder and typeDecoder.
-type decodeAdapter struct {
-	ValueDecoderFunc
-	typeDecoderFunc
-}
-
-var _ ValueDecoder = decodeAdapter{}
-var _ typeDecoder = decodeAdapter{}
-
-// decodeTypeOrValue calls decoder.decodeType is decoder is a typeDecoder. Otherwise, it allocates a new element of type
-// t and calls decoder.DecodeValue on it.
-func decodeTypeOrValue(decoder ValueDecoder, dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
-	td, _ := decoder.(typeDecoder)
-	return decodeTypeOrValueWithInfo(decoder, td, dc, vr, t, true)
-}
-
-func decodeTypeOrValueWithInfo(vd ValueDecoder, td typeDecoder, dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type, convert bool) (reflect.Value, error) {
-	if td != nil {
-		val, err := td.decodeType(dc, vr, t)
-		if err == nil && convert && val.Type() != t {
-			// This conversion step is necessary for slices and maps. If a user declares variables like:
-			//
-			// type myBool bool
-			// var m map[string]myBool
-			//
-			// and tries to decode BSON bytes into the map, the decoding will fail if this conversion is not present
-			// because we'll try to assign a value of type bool to one of type myBool.
-			val = val.Convert(t)
-		}
-		return val, err
-	}
-
-	val := reflect.New(t).Elem()
-	err := vd.DecodeValue(dc, vr, val)
-	return val, err
-}
-
-// CodecZeroer is the interface implemented by Codecs that can also determine if
-// a value of the type that would be encoded is zero.
-type CodecZeroer interface {
-	IsTypeZero(interface{}) bool
-}

mongo/bson/bsoncodec/bsoncodec_test.go

@@ -1,143 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bsoncodec
-
-import (
-	"fmt"
-	"reflect"
-	"testing"
-	"time"
-
-	"go.mongodb.org/mongo-driver/bson/bsonrw"
-	"go.mongodb.org/mongo-driver/bson/bsontype"
-	"go.mongodb.org/mongo-driver/bson/primitive"
-)
-
-func ExampleValueEncoder() {
-	var _ ValueEncoderFunc = func(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
-		if val.Kind() != reflect.String {
-			return ValueEncoderError{Name: "StringEncodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
-		}
-
-		return vw.WriteString(val.String())
-	}
-}
-
-func ExampleValueDecoder() {
-	var _ ValueDecoderFunc = func(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
-		if !val.CanSet() || val.Kind() != reflect.String {
-			return ValueDecoderError{Name: "StringDecodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
-		}
-
-		if vr.Type() != bsontype.String {
-			return fmt.Errorf("cannot decode %v into a string type", vr.Type())
-		}
-
-		str, err := vr.ReadString()
-		if err != nil {
-			return err
-		}
-		val.SetString(str)
-		return nil
-	}
-}
-
-func noerr(t *testing.T, err error) {
-	if err != nil {
-		t.Helper()
-		t.Errorf("Unexpected error: (%T)%v", err, err)
-		t.FailNow()
-	}
-}
-
-func compareTime(t1, t2 time.Time) bool {
-	if t1.Location() != t2.Location() {
-		return false
-	}
-	return t1.Equal(t2)
-}
-
-func compareErrors(err1, err2 error) bool {
-	if err1 == nil && err2 == nil {
-		return true
-	}
-
-	if err1 == nil || err2 == nil {
-		return false
-	}
-
-	if err1.Error() != err2.Error() {
-		return false
-	}
-
-	return true
-}
-
-func compareDecimal128(d1, d2 primitive.Decimal128) bool {
-	d1H, d1L := d1.GetBytes()
-	d2H, d2L := d2.GetBytes()
-
-	if d1H != d2H {
-		return false
-	}
-
-	if d1L != d2L {
-		return false
-	}
-
-	return true
-}
-
-type noPrivateFields struct {
-	a string
-}
-
-func compareNoPrivateFields(npf1, npf2 noPrivateFields) bool {
-	return npf1.a != npf2.a // We don't want these to be equal
-}
-
-type zeroTest struct {
-	reportZero bool
-}
-
-func (z zeroTest) IsZero() bool { return z.reportZero }
-
-func compareZeroTest(_, _ zeroTest) bool { return true }
-
-type nonZeroer struct {
-	value bool
-}
-
-type llCodec struct {
-	t         *testing.T
-	decodeval interface{}
-	encodeval interface{}
-	err       error
-}
-
-func (llc *llCodec) EncodeValue(_ EncodeContext, _ bsonrw.ValueWriter, i interface{}) error {
-	if llc.err != nil {
-		return llc.err
-	}
-
-	llc.encodeval = i
-	return nil
-}
-
-func (llc *llCodec) DecodeValue(_ DecodeContext, _ bsonrw.ValueReader, val reflect.Value) error {
-	if llc.err != nil {
-		return llc.err
-	}
-
-	if !reflect.TypeOf(llc.decodeval).AssignableTo(val.Type()) {
-		llc.t.Errorf("decodeval must be assignable to val provided to DecodeValue, but is not. decodeval %T; val %T", llc.decodeval, val)
-		return nil
-	}
-
-	val.Set(reflect.ValueOf(llc.decodeval))
-	return nil
-}

mongo/bson/bsoncodec/byte_slice_codec.go

@@ -1,111 +0,0 @@
-// Copyright (C) MongoDB, Inc. 2017-present.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
-
-package bsoncodec
-
-import (
-	"fmt"
-	"reflect"
-
-	"go.mongodb.org/mongo-driver/bson/bsonoptions"
-	"go.mongodb.org/mongo-driver/bson/bsonrw"
-	"go.mongodb.org/mongo-driver/bson/bsontype"
-)
-
-// ByteSliceCodec is the Codec used for []byte values.
-type ByteSliceCodec struct {
-	EncodeNilAsEmpty bool
-}
-
-var (
-	defaultByteSliceCodec = NewByteSliceCodec()
-
-	_ ValueCodec  = defaultByteSliceCodec
-	_ typeDecoder = defaultByteSliceCodec
-)
-
-// NewByteSliceCodec returns a StringCodec with options opts.
-func NewByteSliceCodec(opts ...*bsonoptions.ByteSliceCodecOptions) *ByteSliceCodec {
-	byteSliceOpt := bsonoptions.MergeByteSliceCodecOptions(opts...)
-	codec := ByteSliceCodec{}
-	if byteSliceOpt.EncodeNilAsEmpty != nil {
-		codec.EncodeNilAsEmpty = *byteSliceOpt.EncodeNilAsEmpty
-	}
-	return &codec
-}
-
-// EncodeValue is the ValueEncoder for []byte.
-func (bsc *ByteSliceCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
-	if !val.IsValid() || val.Type() != tByteSlice {
-		return ValueEncoderError{Name: "ByteSliceEncodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
-	}
-	if val.IsNil() && !bsc.EncodeNilAsEmpty {
-		return vw.WriteNull()
-	}
-	return vw.WriteBinary(val.Interface().([]byte))
-}
-
-func (bsc *ByteSliceCodec) decodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
-	if t != tByteSlice {
-		return emptyValue, ValueDecoderError{
-			Name:     "ByteSliceDecodeValue",
-			Types:    []reflect.Type{tByteSlice},
-			Received: reflect.Zero(t),
-		}
-	}
-
-	var data []byte
-	var err error
-	switch vrType := vr.Type(); vrType {
-	case bsontype.String:
-		str, err := vr.ReadString()
-		if err != nil {
-			return emptyValue, err
-		}
-		data = []byte(str)
-	case bsontype.Symbol:
-		sym, err := vr.ReadSymbol()
-		if err != nil {
-			return emptyValue, err
-		}
-		data = []byte(sym)
-	case bsontype.Binary:
-		var subtype byte
-		data, subtype, err = vr.ReadBinary()
-		if err != nil {
-			return emptyValue, err
-		}
-		if subtype != bsontype.BinaryGeneric && subtype != bsontype.BinaryBinaryOld {
-			return emptyValue, decodeBinaryError{subtype: subtype, typeName: "[]byte"}
-		}
-	case bsontype.Null:
-		err = vr.ReadNull()
-	case bsontype.Undefined:
-		err = vr.ReadUndefined()
-	default:
-		return emptyValue, fmt.Errorf("cannot decode %v into a []byte", vrType)
-	}
-	if err != nil {
-		return emptyValue, err
-	}
-
-	return reflect.ValueOf(data), nil
-}
-
-// DecodeValue is the ValueDecoder for []byte.
-func (bsc *ByteSliceCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
-	if !val.CanSet() || val.Type() != tByteSlice {
-		return ValueDecoderError{Name: "ByteSliceDecodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
-	}
-
-	elem, err := bsc.decodeType(dc, vr, tByteSlice)
-	if err != nil {
-		return err
-	}
-
-	val.Set(elem)
-	return nil
-}