v0.0.579 fix StackSkip count on exerr zero-logger for Build()

.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/.gitignore

@@ -6,3 +6,5 @@
 # Datasource local storage ignored files
 /dataSources/
 /dataSources.local.xml
+# GitHub Copilot persisted chat sessions
+/copilot/chatSessions

.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

@@ -5,7 +5,13 @@ run:
 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

README.md

@@ -5,37 +5,107 @@ A collection of general & useful library methods
 
 This should not have any heavy dependencies (gin, mongo, etc) and add missing basic language features...
 
-Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
+Potentially needs `export GOPRIVATE="git.blackforestbytes.com"`
 
 
-### Packages:
+## 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                                                                                 |
-|              |            |                                                                                                               |
-| mongoext     | Mike       | Utility/Helper functions for mongodb                                                                          |
-| cursortoken  | Mike       | MongoDB cursortoken implementation                                                                            |
-|              |            |                                                                                                               |
-| totpext      | Mike       | Implementation of TOTP (2-Factor-Auth)                                                                        |
-| termext      | Mike       | Utilities for terminals (mostly color output)                                                                 |
-| confext      | Mike       | Parses environment configuration into structs                                                                 |
-| cmdext       | Mike       | Runner for external commands/processes                                                                        |
-|              |            |                                                                                                               |
-| sq           | Mike       | Utility functions for sql based databases                                                                     |
-| tst          | Mike       | Utility functions for unit tests                                                                              |
-|              |            |                                                                                                               |
-| rfctime      | Mike       | Classes for time seriallization, with different marshallign method for mongo and json                         |
-| gojson       | Mike       | Same interface for marshalling/unmarshalling as go/json, except with proper serialization of null arrays/maps |
-|              |            |                                                                                                               |
-| bfcodegen    | Mike       | Various codegen tools (run via go generate)                                                                   |
-|              |            |                                                                                                               |
-| rext         | Mike       | Regex Wrapper, wraps regexp with a better interface                                                           |
-| wmo          | Mike       | Mongo Wrapper, wraps mongodb with a better interface                                                          |
-|              |            |                                                                                                               |
+| 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 golang reflection                                                                                 |
+| fsext       | Mike       | Utility for filesytem access                                                                                  |
+| ctxext      | Mike       | Utility for context.Context                                                                                   |
+|             |            |                                                                                                               |
+| mongoext    | Mike       | Utility/Helper functions for mongodb (kinda abandoned)                                                        |
+| 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)                                                                 |
+| confext     | Mike       | Parses environment configuration into structs                                                                 |
+| cmdext      | Mike       | Runner for external commands/processes                                                                        |
+|             |            |                                                                                                               |
+| sq          | Mike       | Utility functions for sql based databases (primarily sqlite)                                                  |
+| tst         | Mike       | Utility functions for unit tests                                                                              |
+|             |            |                                                                                                               |
+| rfctime     | Mike       | Classes for time seriallization, with different marshallign method for mongo and json                         |
+| gojson      | Mike       | Same interface for marshalling/unmarshalling as go/json, except with proper serialization of null arrays/maps |
+|             |            |                                                                                                               |
+| bfcodegen   | Mike       | Various codegen tools (run via go generate)                                                                   |
+|             |            |                                                                                                               |
+| rext        | Mike       | Regex Wrapper, wraps regexp with a better interface                                                           |
+| wmo         | Mike       | Mongo Wrapper, wraps mongodb with a better interface                                                          |
+|             |            |                                                                                                               |
+| scn         | Mike       | SimpleCloudNotifier                                                                                           |
+|             |            |                                                                                                               |
+
+
+
+## Usage:
+
+### exerr
+
+ - see **mongoext/builder.go** for full info
+
+Short summary:
+ - An better error package with metadata, listener, api-output and error-traces
+ - Initialize with `exerr.Init()`
+ - *Never* return `err` direct, always use exerr.Wrap(err, "...") - add metadata where applicable
+ - at the end either Print(), Fatal() or Output() your error (print = stdout, fatal = panic, output = json API response)
+ - You can add listeners with exerr.RegisterListener(), and save the full errors to a db or smth
+
+### wmo
+
+ - A typed wrapper around the official mongo-go-driver
+ - Use `wmo.W[...](...)` to wrap the collections and type-ify them
+ - The new collections have all the usual methods, but types
+ - Also they have List() and Paginate() methods for paginated listings (witehr with a cursortoken or page/limit)
+ - Register additional hooks with `WithDecodeFunc`, `WithUnmarshalHook`, `WithMarshalHook`, `WithModifyingPipeline`, `WithModifyingPipelineFunc`
+ - List(), Paginate(), etc support filter interfaces
+   - Rule(s) of thumb: 
+     - filter the results in the filter interface
+     - sort the results in the sort function of the filter interface
+     - add joins ($lookup's) in the `WithModifyingPipelineFunc`/`WithModifyingPipeline`
+
+#### ginext
+
+ - A wrapper around gin-gonic/gin
+ - create the gin engine with `ginext.NewEngine`
+ - Add routes with `engine.Routes()...`
+   - `.Use(..)` adds a middleware
+   - `.Group(..)` adds a group
+   - `.Get().Handle(..)` adds a handler
+ - Handler return values (in contract to ginext) - values implement the `ginext.HTTPResponse` interface
+ - Every handler starts with something like:
+```go 
+func (handler Handler) CommunityMetricsValues(pctx ginext.PreContext) ginext.HTTPResponse {
+    type communityURI struct {
+        Version     string             `uri:"version"`
+        CommunityID models.CommunityID `uri:"cid"`
+    }
+    type body struct {
+        UserID  models.UserID  `json:"userID"`
+        EventID models.EventID `json:"eventID"`
+    }
+
+    var u uri
+    var b body
+    ctx, gctx, httpErr := pctx.URI(&u).Body(&b).Start() // can have more unmarshaller, like header, form, etc
+    if httpErr != nil {
+    	return *httpErr
+    }
+    defer ctx.Cancel()
+
+    // do stuff
+}
+```
+
+#### sq
+
+ - TODO (like mongoext for sqlite/sql databases)

TODO.md

@@ -2,12 +2,8 @@
 
  - cronext
 
- - cursortoken
+ - rfctime.HMSTimeOnly
+ - rfctime.NanoTimeOnly
 
- - typed/geenric mongo wrapper
-
- - error package
-
-- rfctime.DateOnly
-- rfctime.HMSTimeOnly
-- rfctime.NanoTimeOnly
+ - remove sqlx dependency from sq  (unmaintained, and mostly superseeded by our own stuff?)
+ - Move DBLogger and DBPreprocessor to sq

bfcodegen/csid-generate.go

@@ -0,0 +1,197 @@
+package bfcodegen
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"go/format"
+	"git.blackforestbytes.com/BlackForestBytes/goext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cryptext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
+	"io"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+type CSIDDef struct {
+	File         string
+	FileRelative string
+	Name         string
+	Prefix       string
+}
+
+type CSIDGenOptions struct {
+	DebugOutput *bool
+}
+
+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, opt CSIDGenOptions) error {
+
+	debugOutput := langext.Coalesce(opt.DebugOutput, false)
+
+	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 {
+		if debugOutput {
+			fmt.Printf("========= %s =========\n\n", f.Name())
+		}
+
+		fileIDs, pn, err := processCSIDFile(sourceDir, path.Join(sourceDir, f.Name()), debugOutput)
+		if err != nil {
+			return err
+		}
+
+		if debugOutput {
+			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, debugOutput bool) ([]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(),
+			}
+
+			if debugOutput {
+				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 "git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+import "git.blackforestbytes.com/BlackForestBytes/goext/langext"
+import "git.blackforestbytes.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"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.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", CSIDGenOptions{DebugOutput: langext.PTrue})
+	tst.AssertNoErr(t, err)
+
+	err = GenerateCharsetIDSpecs(tmpDir, tmpDir+"/csid_gen.go", CSIDGenOptions{DebugOutput: langext.PTrue})
+	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

@@ -1,26 +1,32 @@
 package bfcodegen
 
 import (
+	"bytes"
+	_ "embed"
+	"encoding/json"
 	"errors"
 	"fmt"
-	"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"
+	"go/format"
+	"git.blackforestbytes.com/BlackForestBytes/goext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cryptext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
 	"io"
 	"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 {
@@ -31,20 +37,23 @@ type EnumDef struct {
 	Values       []EnumDefVal
 }
 
-var rexPackage = rext.W(regexp.MustCompile("^package\\s+(?P<name>[A-Za-z0-9_]+)\\s*$"))
+type EnumGenOptions struct {
+	DebugOutput *bool
+	GoFormat    *bool
+}
 
-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).*$"))
+var rexEnumPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]+)\s*$`))
 
-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>.*))?.*$"))
+var rexEnumDef = rext.W(regexp.MustCompile(`^\s*type\s+(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*//\s*(@enum:type).*$`))
 
-var rexChecksumConst = rext.W(regexp.MustCompile("const ChecksumGenerator = \"(?P<cs>[A-Za-z0-9_]*)\""))
+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>.*))?.*$`))
 
-func GenerateEnumSpecs(sourceDir string, destFile string) error {
+var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 
-	files, err := os.ReadDir(sourceDir)
-	if err != nil {
-		return err
-	}
+//go:embed enum-generate.template
+var templateEnumGenerateText string
+
+func GenerateEnumSpecs(sourceDir string, destFile string, opt EnumGenOptions) error {
 
 	oldChecksum := "N/A"
 	if _, err := os.Stat(destFile); !os.IsNotExist(err) {
@@ -52,20 +61,45 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 		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, langext.Coalesce(opt.GoFormat, true), langext.Coalesce(opt.DebugOutput, false))
+	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, debugOutput 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 +110,7 @@ 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)
@@ -84,13 +118,18 @@ func GenerateEnumSpecs(sourceDir string, destFile string) error {
 	pkgname := ""
 
 	for _, f := range files {
-		fmt.Printf("========= %s =========\n\n", f.Name())
-		fileEnums, pn, err := processFile(sourceDir, path.Join(sourceDir, f.Name()))
-		if err != nil {
-			return err
+		if debugOutput {
+			fmt.Printf("========= %s =========\n\n", f.Name())
 		}
 
-		fmt.Printf("\n")
+		fileEnums, pn, err := processEnumFile(sourceDir, path.Join(sourceDir, f.Name()), debugOutput)
+		if err != nil {
+			return "", "", false, err
+		}
+
+		if debugOutput {
+			fmt.Printf("\n")
+		}
 
 		allEnums = append(allEnums, fileEnums...)
 
@@ -100,32 +139,24 @@ 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))
-	if err != nil {
-		return err
-	}
-
-	if res.CommandTimedOut {
-		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
+	return string(fdata), newChecksum, true, nil
 }
 
-func processFile(basedir string, fn string) ([]EnumDef, string, error) {
+func processEnumFile(basedir string, fn string, debugOutput bool) ([]EnumDef, string, error) {
 	file, err := os.Open(fn)
 	if err != nil {
 		return nil, "", err
@@ -149,7 +180,7 @@ 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
 		}
@@ -169,15 +200,42 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 				Values:       make([]EnumDefVal, 0),
 			}
 			enums = append(enums, def)
-			fmt.Printf("Found enum definition { '%s' -> '%s' }\n", def.EnumTypeName, def.Type)
+
+			if debugOutput {
+				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
@@ -185,16 +243,21 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 				if v.EnumTypeName == typename {
 					enums[i].Values = append(enums[i].Values, def)
 					found = true
-					if def.Description != nil {
-						fmt.Printf("Found enum value [%s] for '%s'  ('%s')\n", def.Value, def.VarName, *def.Description)
-					} else {
-						fmt.Printf("Found enum value [%s] for '%s'\n", def.Value, def.VarName)
+
+					if debugOutput {
+						if def.Description != nil {
+							fmt.Printf("Found enum value [%s] for '%s'  ('%s')\n", def.Value, def.VarName, *def.Description)
+						} else {
+							fmt.Printf("Found enum value [%s] for '%s'\n", def.Value, def.VarName)
+						}
 					}
 					break
 				}
 			}
 			if !found {
-				fmt.Printf("Found non-enum value [%s] for '%s' ( looks like enum value, but no matching @enum:type )\n", def.Value, def.VarName)
+				if debugOutput {
+					fmt.Printf("Found non-enum value [%s] for '%s' ( looks like enum value, but no matching @enum:type )\n", def.Value, def.VarName)
+				}
 			}
 		}
 	}
@@ -202,160 +265,109 @@ func processFile(basedir string, fn string) ([]EnumDef, string, error) {
 	return enums, pkgname, nil
 }
 
-func fmtOutput(cs string, enums []EnumDef, pkgname string) string {
-	str := "// Code generated by enum-generate.go DO NOT EDIT.\n"
-	str += "\n"
-	str += "package " + pkgname + "\n"
-	str += "\n"
+func tryParseDataComment(s string) (map[string]any, bool) {
 
-	str += "import \"gogs.mikescher.com/BlackForestBytes/goext/langext\"" + "\n"
-	str += "\n"
-
-	str += "const ChecksumGenerator = \"" + cs + "\"" + "\n"
-	str += "\n"
-
-	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 enumdef.Values {
-			str += "    " + v.VarName + ": \"" + v.VarName + "\"," + "\n"
-		}
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Valid() bool {" + "\n"
-		str += "    return langext.InArray(e, __" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") Values() []" + enumdef.EnumTypeName + " {" + "\n"
-		str += "    return __" + enumdef.EnumTypeName + "Values" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesAny() []any {" + "\n"
-		str += "    return langext.ArrCastToAny(__" + enumdef.EnumTypeName + "Values)" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
-
-		str += "func (e " + enumdef.EnumTypeName + ") ValuesMeta() []EnumMetaValue {" + "\n"
-		str += "    return " + enumdef.EnumTypeName + "ValuesMeta()"
-		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 {
-			str += "func (e " + enumdef.EnumTypeName + ") Description() string {" + "\n"
-			str += "    if d, ok := __" + enumdef.EnumTypeName + "Descriptions[e]; ok {" + "\n"
-			str += "        return d" + "\n"
-			str += "    }" + "\n"
-			str += "    return \"\"" + "\n"
-			str += "}" + "\n"
-			str += "" + "\n"
-		}
-
-		str += "func (e " + enumdef.EnumTypeName + ") VarName() string {" + "\n"
-		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 (e " + enumdef.EnumTypeName + ") Meta() EnumMetaValue {" + "\n"
-		if hasDescr {
-			str += "    return EnumMetaValue{VarName: e.VarName(), Value: e, Description: langext.Ptr(e.Description())}"
-		} else {
-			str += "    return EnumMetaValue{VarName: e.VarName(), Value: e, Description: nil}"
-		}
-		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 {
-			str += "        " + v.VarName + ".Meta(),\n"
-		}
-		str += "    }" + "\n"
-		str += "}" + "\n"
-		str += "" + "\n"
+	r := make(map[string]any)
 
+	err := json.Unmarshal([]byte(s), &r)
+	if err != nil {
+		return nil, false
 	}
 
-	return str
+	for _, v := range r {
+
+		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
+		}
+
+		return nil, false
+	}
+
+	return r, true
+}
+
+func fmtEnumOutput(cs string, enums []EnumDef, pkgname string) string {
+
+	templ := template.New("enum-generate")
+
+	templ = templ.Funcs(template.FuncMap{
+		"boolToStr": func(b bool) string { return langext.Conditional(b, "true", "false") },
+		"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 {
+						r0[k] = 1
+					}
+				}
+			}
+
+			r1 := langext.MapToArr(r0)
+			r2 := langext.ArrFilter(r1, func(p langext.MapEntry[string, int]) bool { return p.Value == len(v.Values) })
+			r3 := langext.ArrMap(r2, func(p langext.MapEntry[string, int]) string { return p.Key })
+			r4 := langext.ArrToKVMap(r3, func(p string) string { return p }, func(p string) string { return fmt.Sprintf("%T", (*v.Values[0].Data)[p]) })
+
+			return r4
+		},
+	})
+
+	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)
+	}
+
+	return buffer.String()
 }

bfcodegen/enum-generate.template

@@ -0,0 +1,155 @@
+// Code generated by enum-generate.go DO NOT EDIT.
+
+package {{.PkgName}}
+
+import "git.blackforestbytes.com/BlackForestBytes/goext/langext"
+import "git.blackforestbytes.com/BlackForestBytes/goext/enums"
+
+const ChecksumEnumGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
+
+{{ $pkgname  := .PkgName }}
+
+{{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 $hasData}}
+func (e {{.EnumTypeName}}) Data() {{.EnumTypeName}}Data {
+	if d, ok := __{{.EnumTypeName}}Data[e]; ok {
+		return d
+	}
+	return {{.EnumTypeName}}Data{}
+}
+{{end}}
+
+func (e {{.EnumTypeName}}) VarName() string {
+	if d, ok := __{{.EnumTypeName}}Varnames[e]; ok {
+		return d
+	}
+	return ""
+}
+
+func (e {{.EnumTypeName}}) TypeName() string {
+	return "{{$typename}}"
+}
+
+func (e {{.EnumTypeName}}) PackageName() string {
+	return "{{$pkgname }}"
+}
+
+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}}
+
+// ================================ ================= ================================
+
+func AllPackageEnums() []enums.Enum {
+    return []enums.Enum{ {{range .Enums}}
+        {{ if gt (len .Values) 0 }} {{  $v := index .Values 0 }} {{ $v.VarName}}, {{end}} // {{ .EnumTypeName }} {{end}}
+    }
+}

bfcodegen/enum-generate_test.go

@@ -1,15 +1,91 @@
 package bfcodegen
 
 import (
+	_ "embed"
+	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.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")
-	if err != nil {
-		t.Error(err)
-		t.Fail()
-	}
+//go:embed _test_example_2.tgz
+var EnumExampleModels2 []byte
 
+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, true)
+	tst.AssertNoErr(t, err)
+
+	s2, cs2, _, err := _generateEnumSpecs(tmpDir, "", "N/A", true, 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, 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 +1,198 @@
+package bfcodegen
+
+import (
+	"bytes"
+	_ "embed"
+	"errors"
+	"fmt"
+	"go/format"
+	"git.blackforestbytes.com/BlackForestBytes/goext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cryptext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
+	"io"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"text/template"
+)
+
+type IDDef struct {
+	File         string
+	FileRelative string
+	Name         string
+}
+
+type IDGenOptions struct {
+	DebugOutput *bool
+}
+
+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, opt IDGenOptions) error {
+
+	debugOutput := langext.Coalesce(opt.DebugOutput, false)
+
+	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 {
+		if debugOutput {
+			fmt.Printf("========= %s =========\n\n", f.Name())
+		}
+
+		fileIDs, pn, err := processIDFile(sourceDir, path.Join(sourceDir, f.Name()), debugOutput)
+		if err != nil {
+			return err
+		}
+
+		if debugOutput {
+			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, debugOutput bool) ([]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(),
+			}
+
+			if debugOutput {
+				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 +1,52 @@
+// 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 "git.blackforestbytes.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 {{$.AnyDef.Name}}(i)
+}
+
+func (i {{.Name}}) AsAnyPtr() *{{$.AnyDef.Name}} {
+    v := {{$.AnyDef.Name}}(i)
+	return &v
+}
+{{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"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.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", IDGenOptions{DebugOutput: langext.PTrue})
+	tst.AssertNoErr(t, err)
+
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go", IDGenOptions{DebugOutput: langext.PTrue})
+	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

@@ -2,7 +2,7 @@ package cmdext
 
 import (
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"time"
 )
 
@@ -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

@@ -2,15 +2,16 @@ package cmdext
 
 import (
 	"errors"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
-	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/mathext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/syncext"
 	"os/exec"
 	"time"
 )
 
 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

@@ -2,7 +2,7 @@ package cmdext
 
 import (
 	"bufio"
-	"gogs.mikescher.com/BlackForestBytes/goext/syncext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/syncext"
 	"io"
 	"sync"
 )
@@ -32,8 +32,8 @@ func (pr *pipeReader) Read(listener []CommandListener) (string, string, string,
 	stdout := ""
 	go func() {
 		buf := make([]byte, 128)
-		for true {
-			n, out := pr.stdout.Read(buf)
+		for {
+			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 {
-				errch <- out
+			if err != nil {
+				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

@@ -3,7 +3,7 @@ package confext
 import (
 	"errors"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/timeext"
 	"math/bits"
 	"os"
 	"reflect"
@@ -41,12 +41,12 @@ 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
+		}
 
-			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 != "" {
@@ -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
 		}
 

confext/confParser_test.go

@@ -1,8 +1,8 @@
 package confext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/timeext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 	"time"
 )

cryptext/aes_test.go

@@ -2,7 +2,7 @@ package cryptext
 
 import (
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 

cryptext/hash_test.go

@@ -1,7 +1,7 @@
 package cryptext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 

cryptext/passHash.go

@@ -8,8 +8,8 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/totpext"
 	"golang.org/x/crypto/bcrypt"
 	"strconv"
 	"strings"
@@ -66,7 +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

cryptext/passHash_test.go

@@ -1,9 +1,9 @@
 package cryptext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/totpext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 

cryptext/pronouncablePassword.go

@@ -0,0 +1,263 @@
+package cryptext
+
+import (
+	"crypto/rand"
+	"io"
+	"math/big"
+	mathrand "math/rand"
+	"strings"
+)
+
+const (
+	ppStartChar            = "BCDFGHJKLMNPQRSTVWXZ"
+	ppEndChar              = "ABDEFIKMNORSTUXYZ"
+	ppVowel                = "AEIOUY"
+	ppConsonant            = "BCDFGHJKLMNPQRSTVWXZ"
+	ppSegmentLenMin        = 3
+	ppSegmentLenMax        = 7
+	ppMaxRepeatedVowel     = 2
+	ppMaxRepeatedConsonant = 2
+)
+
+var ppContinuation = map[uint8]string{
+	'A': "BCDFGHJKLMNPRSTVWXYZ",
+	'B': "ADFIKLMNORSTUY",
+	'C': "AEIKOUY",
+	'D': "AEILORSUYZ",
+	'E': "BCDFGHJKLMNPRSTVWXYZ",
+	'F': "ADEGIKLOPRTUY",
+	'G': "ABDEFHILMNORSTUY",
+	'H': "AEIOUY",
+	'I': "BCDFGHJKLMNPRSTVWXZ",
+	'J': "AEIOUY",
+	'K': "ADEFHILMNORSTUY",
+	'L': "ADEFGIJKMNOPSTUVWYZ",
+	'M': "ABEFIKOPSTUY",
+	'N': "ABEFIKOPSTUY",
+	'O': "BCDFGHJKLMNPRSTVWXYZ",
+	'P': "AEFIJLORSTUY",
+	'Q': "AEIOUY",
+	'R': "ADEFGHIJKLMNOPSTUVYZ",
+	'S': "ACDEIKLOPTUYZ",
+	'T': "AEHIJOPRSUWY",
+	'U': "BCDFGHJKLMNPRSTVWXZ",
+	'V': "AEIOUY",
+	'W': "AEIOUY",
+	'X': "AEIOUY",
+	'Y': "ABCDFGHKLMNPRSTVXZ",
+	'Z': "AEILOTUY",
+}
+
+var ppLog2Map = map[int]float64{
+	1:  0.00000000,
+	2:  1.00000000,
+	3:  1.58496250,
+	4:  2.00000000,
+	5:  2.32192809,
+	6:  2.58496250,
+	7:  2.80735492,
+	8:  3.00000000,
+	9:  3.16992500,
+	10: 3.32192809,
+	11: 3.45943162,
+	12: 3.58496250,
+	13: 3.70043972,
+	14: 3.80735492,
+	15: 3.90689060,
+	16: 4.00000000,
+	17: 4.08746284,
+	18: 4.16992500,
+	19: 4.24792751,
+	20: 4.32192809,
+	21: 4.39231742,
+	22: 4.45943162,
+	23: 4.52356196,
+	24: 4.58496250,
+	25: 4.64385619,
+	26: 4.70043972,
+	27: 4.75488750,
+	28: 4.80735492,
+	29: 4.85798100,
+	30: 4.90689060,
+	31: 4.95419631,
+	32: 5.00000000,
+}
+
+var (
+	ppVowelMap     = ppMakeSet(ppVowel)
+	ppConsonantMap = ppMakeSet(ppConsonant)
+	ppEndCharMap   = ppMakeSet(ppEndChar)
+)
+
+func ppMakeSet(v string) map[uint8]bool {
+	mp := make(map[uint8]bool, len(v))
+	for _, chr := range v {
+		mp[uint8(chr)] = true
+	}
+	return mp
+}
+
+func ppRandInt(rng io.Reader, max int) int {
+	v, err := rand.Int(rng, big.NewInt(int64(max)))
+	if err != nil {
+		panic(err)
+	}
+	return int(v.Int64())
+}
+
+func ppRand(rng io.Reader, chars string, entropy *float64) uint8 {
+	chr := chars[ppRandInt(rng, len(chars))]
+
+	*entropy = *entropy + ppLog2Map[len(chars)]
+
+	return chr
+}
+
+func ppCharType(chr uint8) (bool, bool) {
+	_, ok1 := ppVowelMap[chr]
+	_, ok2 := ppConsonantMap[chr]
+
+	return ok1, ok2
+}
+
+func ppCharsetRemove(cs string, set map[uint8]bool, allowEmpty bool) string {
+	result := ""
+	for _, chr := range cs {
+		if _, ok := set[uint8(chr)]; !ok {
+			result += string(chr)
+		}
+	}
+	if result == "" && !allowEmpty {
+		return cs
+	}
+	return result
+}
+
+func ppCharsetFilter(cs string, set map[uint8]bool, allowEmpty bool) string {
+	result := ""
+	for _, chr := range cs {
+		if _, ok := set[uint8(chr)]; ok {
+			result += string(chr)
+		}
+	}
+	if result == "" && !allowEmpty {
+		return cs
+	}
+	return result
+}
+
+func PronouncablePasswordExt(rng io.Reader, pwlen int) (string, float64) {
+
+	// kinda pseudo markov-chain - with a few extra rules and no weights...
+
+	if pwlen <= 0 {
+		return "", 0
+	}
+
+	vowelCount := 0
+	consoCount := 0
+	entropy := float64(0)
+
+	startChar := ppRand(rng, ppStartChar, &entropy)
+
+	result := string(startChar)
+	currentChar := startChar
+
+	isVowel, isConsonant := ppCharType(currentChar)
+	if isVowel {
+		vowelCount = 1
+	}
+	if isConsonant {
+		consoCount = ppMaxRepeatedConsonant
+	}
+
+	segmentLen := 1
+
+	segmentLenTarget := ppSegmentLenMin + ppRandInt(rng, ppSegmentLenMax-ppSegmentLenMin)
+
+	for len(result) < pwlen {
+
+		charset := ppContinuation[currentChar]
+		if vowelCount >= ppMaxRepeatedVowel {
+			charset = ppCharsetRemove(charset, ppVowelMap, false)
+		}
+		if consoCount >= ppMaxRepeatedConsonant {
+			charset = ppCharsetRemove(charset, ppConsonantMap, false)
+		}
+
+		lastOfSegment := false
+		newSegment := false
+
+		if len(result)+1 == pwlen {
+			// last of result
+			charset = ppCharsetFilter(charset, ppEndCharMap, false)
+		} else if segmentLen+1 == segmentLenTarget {
+			// last of segment
+			charsetNew := ppCharsetFilter(charset, ppEndCharMap, true)
+			if charsetNew != "" {
+				charset = charsetNew
+				lastOfSegment = true
+			}
+		} else if segmentLen >= segmentLenTarget {
+			// (perhaps) start of new segment
+			if _, ok := ppEndCharMap[currentChar]; ok {
+				charset = ppStartChar
+				newSegment = true
+			} else {
+				// continue segment for one more char to (hopefully) find an end-char
+				charsetNew := ppCharsetFilter(charset, ppEndCharMap, true)
+				if charsetNew != "" {
+					charset = charsetNew
+					lastOfSegment = true
+				}
+			}
+		} else {
+			// normal continuation
+		}
+
+		newChar := ppRand(rng, charset, &entropy)
+		if lastOfSegment {
+			currentChar = newChar
+			segmentLen++
+			result += strings.ToLower(string(newChar))
+		} else if newSegment {
+			currentChar = newChar
+			segmentLen = 1
+			result += strings.ToUpper(string(newChar))
+			segmentLenTarget = ppSegmentLenMin + ppRandInt(rng, ppSegmentLenMax-ppSegmentLenMin)
+			vowelCount = 0
+			consoCount = 0
+		} else {
+			currentChar = newChar
+			segmentLen++
+			result += strings.ToLower(string(newChar))
+		}
+
+		isVowel, isConsonant := ppCharType(currentChar)
+		if isVowel {
+			vowelCount++
+			consoCount = 0
+		}
+		if isConsonant {
+			vowelCount = 0
+			if newSegment {
+				consoCount = ppMaxRepeatedConsonant
+			} else {
+				consoCount++
+			}
+		}
+	}
+
+	return result, entropy
+}
+
+func PronouncablePassword(len int) string {
+	v, _ := PronouncablePasswordExt(rand.Reader, len)
+	return v
+}
+
+func PronouncablePasswordSeeded(seed int64, len int) string {
+
+	v, _ := PronouncablePasswordExt(mathrand.New(mathrand.NewSource(seed)), len)
+	return v
+}

cryptext/pronouncablePassword_test.go

@@ -0,0 +1,35 @@
+package cryptext
+
+import (
+	"fmt"
+	"math/rand"
+	"testing"
+)
+
+func TestPronouncablePasswordExt(t *testing.T) {
+	for i := 0; i < 20; i++ {
+		pw, entropy := PronouncablePasswordExt(rand.New(rand.NewSource(int64(i))), 16)
+		fmt.Printf("[%.2f] => %s\n", entropy, pw)
+	}
+}
+
+func TestPronouncablePasswordSeeded(t *testing.T) {
+	for i := 0; i < 20; i++ {
+		pw := PronouncablePasswordSeeded(int64(i), 8)
+		fmt.Printf("%s\n", pw)
+	}
+}
+
+func TestPronouncablePassword(t *testing.T) {
+	for i := 0; i < 20; i++ {
+		pw := PronouncablePassword(i + 1)
+		fmt.Printf("%s\n", pw)
+	}
+}
+
+func TestPronouncablePasswordWrongLen(t *testing.T) {
+	PronouncablePassword(0)
+	PronouncablePassword(-1)
+	PronouncablePassword(-2)
+	PronouncablePassword(-3)
+}

ctxext/getter.go

@@ -0,0 +1,27 @@
+package ctxext
+
+import "context"
+
+func Value[T any](ctx context.Context, key any) (T, bool) {
+	v := ctx.Value(key)
+	if v == nil {
+		return *new(T), false
+	}
+	if tv, ok := v.(T); !ok {
+		return *new(T), false
+	} else {
+		return tv, true
+	}
+}
+
+func ValueOrDefault[T any](ctx context.Context, key any, def T) T {
+	v := ctx.Value(key)
+	if v == nil {
+		return def
+	}
+	if tv, ok := v.(T); !ok {
+		return def
+	} else {
+		return tv
+	}
+}

cursortoken/direction.go

@@ -6,3 +6,13 @@ const (
 	SortASC  SortDirection = "ASC"
 	SortDESC SortDirection = "DESC"
 )
+
+func (sd SortDirection) ToMongo() int {
+	if sd == SortASC {
+		return 1
+	} else if sd == SortDESC {
+		return -1
+	} else {
+		return 0
+	}
+}

cursortoken/filter.go

@@ -1,10 +1,15 @@
 package cursortoken
 
 import (
+	"context"
 	"go.mongodb.org/mongo-driver/mongo"
 )
 
-type Filter interface {
-	FilterQuery() mongo.Pipeline
-	Pagination() (string, SortDirection, string, SortDirection)
+type RawFilter interface {
+	FilterQuery(ctx context.Context) mongo.Pipeline
+}
+
+type Filter interface {
+	FilterQuery(ctx context.Context) mongo.Pipeline
+	Pagination(ctx context.Context) (string, SortDirection, string, SortDirection)
 }

cursortoken/token.go

@@ -3,12 +3,18 @@ package cursortoken
 import (
 	"encoding/base32"
 	"encoding/json"
-	"errors"
-	"go.mongodb.org/mongo-driver/bson/primitive"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"strconv"
 	"strings"
 	"time"
 )
 
+type CursorToken interface {
+	Token() string
+	IsStart() bool
+	IsEnd() bool
+}
+
 type Mode string
 
 const (
@@ -24,97 +30,6 @@ type Extra struct {
 	PageSize  *int
 }
 
-type CursorToken struct {
-	Mode               Mode
-	ValuePrimary       string
-	ValueSecondary     string
-	Direction          SortDirection
-	DirectionSecondary SortDirection
-	PageSize           int
-	Extra              Extra
-}
-
-type cursorTokenSerialize struct {
-	ValuePrimary       *string        `json:"v1,omitempty"`
-	ValueSecondary     *string        `json:"v2,omitempty"`
-	Direction          *SortDirection `json:"dir,omitempty"`
-	DirectionSecondary *SortDirection `json:"dir2,omitempty"`
-	PageSize           *int           `json:"size,omitempty"`
-
-	ExtraTimestamp *time.Time `json:"ts,omitempty"`
-	ExtraId        *string    `json:"id,omitempty"`
-	ExtraPage      *int       `json:"pg,omitempty"`
-	ExtraPageSize  *int       `json:"sz,omitempty"`
-}
-
-func Start() CursorToken {
-	return CursorToken{
-		Mode:               CTMStart,
-		ValuePrimary:       "",
-		ValueSecondary:     "",
-		Direction:          "",
-		DirectionSecondary: "",
-		PageSize:           0,
-		Extra:              Extra{},
-	}
-}
-
-func End() CursorToken {
-	return CursorToken{
-		Mode:               CTMEnd,
-		ValuePrimary:       "",
-		ValueSecondary:     "",
-		Direction:          "",
-		DirectionSecondary: "",
-		PageSize:           0,
-		Extra:              Extra{},
-	}
-}
-
-func (c *CursorToken) Token() string {
-	if c.Mode == CTMStart {
-		return "@start"
-	}
-	if c.Mode == CTMEnd {
-		return "@end"
-	}
-
-	// We kinda manually implement omitempty for the CursorToken here
-	// because omitempty does not work for time.Time and otherwise we would always
-	// get weird time values when decoding a token that initially didn't have an Timestamp set
-	// For this usecase we treat Unix=0 as an empty timestamp
-
-	sertok := cursorTokenSerialize{}
-
-	if c.ValuePrimary != "" {
-		sertok.ValuePrimary = &c.ValuePrimary
-	}
-	if c.ValueSecondary != "" {
-		sertok.ValueSecondary = &c.ValueSecondary
-	}
-	if c.Direction != "" {
-		sertok.Direction = &c.Direction
-	}
-	if c.DirectionSecondary != "" {
-		sertok.DirectionSecondary = &c.DirectionSecondary
-	}
-	if c.PageSize != 0 {
-		sertok.PageSize = &c.PageSize
-	}
-
-	sertok.ExtraTimestamp = c.Extra.Timestamp
-	sertok.ExtraId = c.Extra.Id
-	sertok.ExtraPage = c.Extra.Page
-	sertok.ExtraPageSize = c.Extra.PageSize
-
-	body, err := json.Marshal(sertok)
-	if err != nil {
-		panic(err)
-	}
-
-	return "tok_" + base32.StdEncoding.EncodeToString(body)
-}
-
 func Decode(tok string) (CursorToken, error) {
 	if tok == "" {
 		return Start(), nil
@@ -125,60 +40,56 @@ func Decode(tok string) (CursorToken, error) {
 	if strings.ToLower(tok) == "@end" {
 		return End(), nil
 	}
-
-	if !strings.HasPrefix(tok, "tok_") {
-		return CursorToken{}, errors.New("could not decode token, missing prefix")
+	if strings.ToLower(tok) == "$end" {
+		return PageEnd(), nil
+	}
+	if strings.HasPrefix(tok, "$") && len(tok) > 1 {
+		n, err := strconv.ParseInt(tok[1:], 10, 64)
+		if err != nil {
+			return nil, exerr.Wrap(err, "failed to deserialize token").Str("token", tok).WithType(exerr.TypeCursorTokenDecode).Build()
+		}
+		return Page(int(n)), nil
 	}
 
-	body, err := base32.StdEncoding.DecodeString(tok[len("tok_"):])
-	if err != nil {
-		return CursorToken{}, err
-	}
+	if strings.HasPrefix(tok, "tok_") {
 
-	var tokenDeserialize cursorTokenSerialize
-	err = json.Unmarshal(body, &tokenDeserialize)
-	if err != nil {
-		return CursorToken{}, err
-	}
+		body, err := base32.StdEncoding.DecodeString(tok[len("tok_"):])
+		if err != nil {
+			return nil, err
+		}
 
-	token := CursorToken{Mode: CTMNormal}
+		var tokenDeserialize cursorTokenKeySortSerialize
+		err = json.Unmarshal(body, &tokenDeserialize)
+		if err != nil {
+			return nil, exerr.Wrap(err, "failed to deserialize token").Str("token", tok).WithType(exerr.TypeCursorTokenDecode).Build()
+		}
 
-	if tokenDeserialize.ValuePrimary != nil {
-		token.ValuePrimary = *tokenDeserialize.ValuePrimary
-	}
-	if tokenDeserialize.ValueSecondary != nil {
-		token.ValueSecondary = *tokenDeserialize.ValueSecondary
-	}
-	if tokenDeserialize.Direction != nil {
-		token.Direction = *tokenDeserialize.Direction
-	}
-	if tokenDeserialize.DirectionSecondary != nil {
-		token.DirectionSecondary = *tokenDeserialize.DirectionSecondary
-	}
-	if tokenDeserialize.PageSize != nil {
-		token.PageSize = *tokenDeserialize.PageSize
-	}
+		token := CTKeySort{Mode: CTMNormal}
 
-	token.Extra.Timestamp = tokenDeserialize.ExtraTimestamp
-	token.Extra.Id = tokenDeserialize.ExtraId
-	token.Extra.Page = tokenDeserialize.ExtraPage
-	token.Extra.PageSize = tokenDeserialize.ExtraPageSize
+		if tokenDeserialize.ValuePrimary != nil {
+			token.ValuePrimary = *tokenDeserialize.ValuePrimary
+		}
+		if tokenDeserialize.ValueSecondary != nil {
+			token.ValueSecondary = *tokenDeserialize.ValueSecondary
+		}
+		if tokenDeserialize.Direction != nil {
+			token.Direction = *tokenDeserialize.Direction
+		}
+		if tokenDeserialize.DirectionSecondary != nil {
+			token.DirectionSecondary = *tokenDeserialize.DirectionSecondary
+		}
+		if tokenDeserialize.PageSize != nil {
+			token.PageSize = *tokenDeserialize.PageSize
+		}
 
-	return token, nil
-}
+		token.Extra.Timestamp = tokenDeserialize.ExtraTimestamp
+		token.Extra.Id = tokenDeserialize.ExtraId
+		token.Extra.Page = tokenDeserialize.ExtraPage
+		token.Extra.PageSize = tokenDeserialize.ExtraPageSize
+
+		return token, nil
 
-func (c *CursorToken) ValuePrimaryObjectId() (primitive.ObjectID, bool) {
-	if oid, err := primitive.ObjectIDFromHex(c.ValuePrimary); err == nil {
-		return oid, true
 	} else {
-		return primitive.ObjectID{}, false
-	}
-}
-
-func (c *CursorToken) ValueSecondaryObjectId() (primitive.ObjectID, bool) {
-	if oid, err := primitive.ObjectIDFromHex(c.ValueSecondary); err == nil {
-		return oid, true
-	} else {
-		return primitive.ObjectID{}, false
+		return nil, exerr.New(exerr.TypeCursorTokenDecode, "could not decode token, missing/unknown prefix").Str("token", tok).Build()
 	}
 }

cursortoken/tokenKeySort.go

@@ -0,0 +1,136 @@
+package cursortoken
+
+import (
+	"encoding/base32"
+	"encoding/json"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"time"
+)
+
+type CTKeySort struct {
+	Mode               Mode
+	ValuePrimary       string
+	ValueSecondary     string
+	Direction          SortDirection
+	DirectionSecondary SortDirection
+	PageSize           int
+	Extra              Extra
+}
+
+type cursorTokenKeySortSerialize struct {
+	ValuePrimary       *string        `json:"v1,omitempty"`
+	ValueSecondary     *string        `json:"v2,omitempty"`
+	Direction          *SortDirection `json:"dir,omitempty"`
+	DirectionSecondary *SortDirection `json:"dir2,omitempty"`
+	PageSize           *int           `json:"size,omitempty"`
+
+	ExtraTimestamp *time.Time `json:"ts,omitempty"`
+	ExtraId        *string    `json:"id,omitempty"`
+	ExtraPage      *int       `json:"pg,omitempty"`
+	ExtraPageSize  *int       `json:"sz,omitempty"`
+}
+
+func NewKeySortToken(valuePrimary string, valueSecondary string, direction SortDirection, directionSecondary SortDirection, pageSize int, extra Extra) CursorToken {
+	return CTKeySort{
+		Mode:               CTMNormal,
+		ValuePrimary:       valuePrimary,
+		ValueSecondary:     valueSecondary,
+		Direction:          direction,
+		DirectionSecondary: directionSecondary,
+		PageSize:           pageSize,
+		Extra:              extra,
+	}
+}
+
+func Start() CursorToken {
+	return CTKeySort{
+		Mode:               CTMStart,
+		ValuePrimary:       "",
+		ValueSecondary:     "",
+		Direction:          "",
+		DirectionSecondary: "",
+		PageSize:           0,
+		Extra:              Extra{},
+	}
+}
+
+func End() CursorToken {
+	return CTKeySort{
+		Mode:               CTMEnd,
+		ValuePrimary:       "",
+		ValueSecondary:     "",
+		Direction:          "",
+		DirectionSecondary: "",
+		PageSize:           0,
+		Extra:              Extra{},
+	}
+}
+
+func (c CTKeySort) Token() string {
+
+	if c.Mode == CTMStart {
+		return "@start"
+	}
+	if c.Mode == CTMEnd {
+		return "@end"
+	}
+
+	// We kinda manually implement omitempty for the CursorToken here
+	// because omitempty does not work for time.Time and otherwise we would always
+	// get weird time values when decoding a token that initially didn't have an Timestamp set
+	// For this usecase we treat Unix=0 as an empty timestamp
+
+	sertok := cursorTokenKeySortSerialize{}
+
+	if c.ValuePrimary != "" {
+		sertok.ValuePrimary = &c.ValuePrimary
+	}
+	if c.ValueSecondary != "" {
+		sertok.ValueSecondary = &c.ValueSecondary
+	}
+	if c.Direction != "" {
+		sertok.Direction = &c.Direction
+	}
+	if c.DirectionSecondary != "" {
+		sertok.DirectionSecondary = &c.DirectionSecondary
+	}
+	if c.PageSize != 0 {
+		sertok.PageSize = &c.PageSize
+	}
+
+	sertok.ExtraTimestamp = c.Extra.Timestamp
+	sertok.ExtraId = c.Extra.Id
+	sertok.ExtraPage = c.Extra.Page
+	sertok.ExtraPageSize = c.Extra.PageSize
+
+	body, err := json.Marshal(sertok)
+	if err != nil {
+		panic(err)
+	}
+
+	return "tok_" + base32.StdEncoding.EncodeToString(body)
+}
+
+func (c CTKeySort) IsEnd() bool {
+	return c.Mode == CTMEnd
+}
+
+func (c CTKeySort) IsStart() bool {
+	return c.Mode == CTMStart
+}
+
+func (c CTKeySort) valuePrimaryObjectId() (primitive.ObjectID, bool) {
+	if oid, err := primitive.ObjectIDFromHex(c.ValuePrimary); err == nil {
+		return oid, true
+	} else {
+		return primitive.ObjectID{}, false
+	}
+}
+
+func (c CTKeySort) valueSecondaryObjectId() (primitive.ObjectID, bool) {
+	if oid, err := primitive.ObjectIDFromHex(c.ValueSecondary); err == nil {
+		return oid, true
+	} else {
+		return primitive.ObjectID{}, false
+	}
+}

cursortoken/tokenPaginate.go

@@ -0,0 +1,41 @@
+package cursortoken
+
+import "strconv"
+
+type CTPaginated struct {
+	Mode Mode
+	Page int
+}
+
+func Page(p int) CursorToken {
+	return CTPaginated{
+		Mode: CTMNormal,
+		Page: p,
+	}
+}
+
+func PageEnd() CursorToken {
+	return CTPaginated{
+		Mode: CTMEnd,
+		Page: 0,
+	}
+}
+
+func (c CTPaginated) Token() string {
+	if c.Mode == CTMStart {
+		return "$1"
+	}
+	if c.Mode == CTMEnd {
+		return "$end"
+	}
+
+	return "$" + strconv.Itoa(c.Page)
+}
+
+func (c CTPaginated) IsEnd() bool {
+	return c.Mode == CTMEnd
+}
+
+func (c CTPaginated) IsStart() bool {
+	return c.Mode == CTMStart || c.Page == 1
+}

dataext/bufferedReadCloser.go

@@ -115,6 +115,9 @@ func (b *bufferedReadCloser) BufferedAll() ([]byte, error) {
 				return nil, err
 			}
 		}
+		if err := b.Reset(); err != nil {
+			return nil, err
+		}
 		return b.buffer, nil
 
 	case modeSourceFinished:
@@ -131,10 +134,22 @@ func (b *bufferedReadCloser) BufferedAll() ([]byte, error) {
 	}
 }
 
+// Reset resets the buffer to the beginning of the buffer.
+// If the original source is partially read, we will finish reading it and fill our buffer
 func (b *bufferedReadCloser) Reset() error {
 	switch b.mode {
 	case modeSourceReading:
-		fallthrough
+		if b.off == 0 {
+			return nil // nobody has read anything yet
+		}
+		err := b.Close()
+		if err != nil {
+			return err
+		}
+		b.mode = modeBufferReading
+		b.off = 0
+		return nil
+
 	case modeSourceFinished:
 		err := b.Close()
 		if err != nil {

dataext/casMutex.go

@@ -0,0 +1,254 @@
+package dataext
+
+import (
+	"context"
+	"golang.org/x/sync/semaphore"
+	"runtime"
+	"sync"
+	"sync/atomic"
+	"time"
+	"unsafe"
+)
+
+// from https://github.com/viney-shih/go-lock/blob/2f19fd8ce335e33e0ab9dccb1ff2ce820c3da332/cas.go
+
+// CASMutex is the struct implementing RWMutex with CAS mechanism.
+type CASMutex struct {
+	state     casState
+	turnstile *semaphore.Weighted
+
+	broadcastChan chan struct{}
+	broadcastMut  sync.RWMutex
+}
+
+func NewCASMutex() *CASMutex {
+	return &CASMutex{
+		state:         casStateNoLock,
+		turnstile:     semaphore.NewWeighted(1),
+		broadcastChan: make(chan struct{}),
+	}
+}
+
+type casState int32
+
+const (
+	casStateUndefined casState = iota - 2 // -2
+	casStateWriteLock                     // -1
+	casStateNoLock                        // 0
+	casStateReadLock                      // >= 1
+)
+
+func (m *CASMutex) getState(n int32) casState {
+	switch st := casState(n); {
+	case st == casStateWriteLock:
+		fallthrough
+	case st == casStateNoLock:
+		return st
+	case st >= casStateReadLock:
+		return casStateReadLock
+	default:
+		// actually, it should not happened.
+		return casStateUndefined
+	}
+}
+
+func (m *CASMutex) listen() <-chan struct{} {
+	m.broadcastMut.RLock()
+	defer m.broadcastMut.RUnlock()
+
+	return m.broadcastChan
+}
+
+func (m *CASMutex) broadcast() {
+	newCh := make(chan struct{})
+
+	m.broadcastMut.Lock()
+	ch := m.broadcastChan
+	m.broadcastChan = newCh
+	m.broadcastMut.Unlock()
+
+	close(ch)
+}
+
+func (m *CASMutex) tryLock(ctx context.Context) bool {
+	for {
+		broker := m.listen()
+		if atomic.CompareAndSwapInt32(
+			(*int32)(unsafe.Pointer(&m.state)),
+			int32(casStateNoLock),
+			int32(casStateWriteLock),
+		) {
+			return true
+		}
+
+		if ctx == nil {
+			return false
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		case <-broker:
+			// waiting for signal triggered by m.broadcast() and trying again.
+		}
+	}
+}
+
+// TryLockWithContext attempts to acquire the lock, blocking until resources
+// are available or ctx is done (timeout or cancellation).
+func (m *CASMutex) TryLockWithContext(ctx context.Context) bool {
+	if err := m.turnstile.Acquire(ctx, 1); err != nil {
+		// Acquire failed due to timeout or cancellation
+		return false
+	}
+
+	defer m.turnstile.Release(1)
+
+	return m.tryLock(ctx)
+}
+
+// Lock acquires the lock.
+// If it is currently held by others, Lock will wait until it has a chance to acquire it.
+func (m *CASMutex) Lock() {
+	ctx := context.Background()
+
+	m.TryLockWithContext(ctx)
+}
+
+// TryLock attempts to acquire the lock without blocking.
+// Return false if someone is holding it now.
+func (m *CASMutex) TryLock() bool {
+	if !m.turnstile.TryAcquire(1) {
+		return false
+	}
+
+	defer m.turnstile.Release(1)
+
+	return m.tryLock(nil)
+}
+
+// TryLockWithTimeout attempts to acquire the lock within a period of time.
+// Return false if spending time is more than duration and no chance to acquire it.
+func (m *CASMutex) TryLockWithTimeout(duration time.Duration) bool {
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
+	return m.TryLockWithContext(ctx)
+}
+
+// Unlock releases the lock.
+func (m *CASMutex) Unlock() {
+	if ok := atomic.CompareAndSwapInt32(
+		(*int32)(unsafe.Pointer(&m.state)),
+		int32(casStateWriteLock),
+		int32(casStateNoLock),
+	); !ok {
+		panic("Unlock failed")
+	}
+
+	m.broadcast()
+}
+
+func (m *CASMutex) rTryLock(ctx context.Context) bool {
+	for {
+		broker := m.listen()
+		n := atomic.LoadInt32((*int32)(unsafe.Pointer(&m.state)))
+		st := m.getState(n)
+		switch st {
+		case casStateNoLock, casStateReadLock:
+			if atomic.CompareAndSwapInt32((*int32)(unsafe.Pointer(&m.state)), n, n+1) {
+				return true
+			}
+		}
+
+		if ctx == nil {
+			return false
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		default:
+			switch st {
+			// read-lock failed due to concurrence issue, try again immediately
+			case casStateNoLock, casStateReadLock:
+				runtime.Gosched() // allow other goroutines to do stuff.
+				continue
+			}
+		}
+
+		select {
+		case <-ctx.Done():
+			// timeout or cancellation
+			return false
+		case <-broker:
+			// waiting for signal triggered by m.broadcast() and trying again.
+		}
+	}
+}
+
+// RTryLockWithContext attempts to acquire the read lock, blocking until resources
+// are available or ctx is done (timeout or cancellation).
+func (m *CASMutex) RTryLockWithContext(ctx context.Context) bool {
+	if err := m.turnstile.Acquire(ctx, 1); err != nil {
+		// Acquire failed due to timeout or cancellation
+		return false
+	}
+
+	m.turnstile.Release(1)
+
+	return m.rTryLock(ctx)
+}
+
+// RLock acquires the read lock.
+// If it is currently held by others writing, RLock will wait until it has a chance to acquire it.
+func (m *CASMutex) RLock() {
+	ctx := context.Background()
+
+	m.RTryLockWithContext(ctx)
+}
+
+// RTryLock attempts to acquire the read lock without blocking.
+// Return false if someone is writing it now.
+func (m *CASMutex) RTryLock() bool {
+	if !m.turnstile.TryAcquire(1) {
+		return false
+	}
+
+	m.turnstile.Release(1)
+
+	return m.rTryLock(nil)
+}
+
+// RTryLockWithTimeout attempts to acquire the read lock within a period of time.
+// Return false if spending time is more than duration and no chance to acquire it.
+func (m *CASMutex) RTryLockWithTimeout(duration time.Duration) bool {
+	ctx, cancel := context.WithTimeout(context.Background(), duration)
+	defer cancel()
+
+	return m.RTryLockWithContext(ctx)
+}
+
+// RUnlock releases the read lock.
+func (m *CASMutex) RUnlock() {
+	n := atomic.AddInt32((*int32)(unsafe.Pointer(&m.state)), -1)
+	switch m.getState(n) {
+	case casStateUndefined, casStateWriteLock:
+		panic("RUnlock failed")
+	case casStateNoLock:
+		m.broadcast()
+	}
+}
+
+// RLocker returns a Locker interface that implements the Lock and Unlock methods
+// by calling CASMutex.RLock and CASMutex.RUnlock.
+func (m *CASMutex) RLocker() sync.Locker {
+	return (*rlocker)(m)
+}
+
+type rlocker CASMutex
+
+func (r *rlocker) Lock()   { (*CASMutex)(r).RLock() }
+func (r *rlocker) Unlock() { (*CASMutex)(r).RUnlock() }

dataext/delayedCombiningInvoker.go

@@ -0,0 +1,132 @@
+package dataext
+
+import (
+	"context"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/syncext"
+	"sync"
+	"time"
+)
+
+type DelayedCombiningInvoker struct {
+	syncLock           sync.Mutex
+	triggerChan        chan bool
+	cancelChan         chan bool
+	execNowChan        chan bool
+	action             func()
+	delay              time.Duration
+	maxDelay           time.Duration
+	executorRunning    *syncext.AtomicBool
+	lastRequestTime    time.Time
+	initialRequestTime time.Time
+}
+
+func NewDelayedCombiningInvoker(action func(), delay time.Duration, maxDelay time.Duration) *DelayedCombiningInvoker {
+	return &DelayedCombiningInvoker{
+		action:             action,
+		delay:              delay,
+		maxDelay:           maxDelay,
+		executorRunning:    syncext.NewAtomicBool(false),
+		triggerChan:        make(chan bool),
+		cancelChan:         make(chan bool, 1),
+		execNowChan:        make(chan bool, 1),
+		lastRequestTime:    time.Now(),
+		initialRequestTime: time.Now(),
+	}
+}
+
+func (d *DelayedCombiningInvoker) Request() {
+	now := time.Now()
+
+	d.syncLock.Lock()
+	defer d.syncLock.Unlock()
+
+	if d.executorRunning.Get() {
+		d.lastRequestTime = now
+
+		d.triggerChan <- true
+	} else {
+		d.initialRequestTime = now
+		d.lastRequestTime = now
+
+		d.executorRunning.Set(true)
+		syncext.ReadNonBlocking(d.triggerChan) // clear the channel
+		syncext.ReadNonBlocking(d.cancelChan)  // clear the channel
+		syncext.ReadNonBlocking(d.execNowChan) // clear the channel
+		go d.run()
+	}
+}
+
+func (d *DelayedCombiningInvoker) run() {
+	defer func() {
+		d.syncLock.Lock()
+		d.executorRunning.Set(false)
+		d.syncLock.Unlock()
+	}()
+
+	for {
+		d.syncLock.Lock()
+		timeOut := min(d.maxDelay-time.Since(d.initialRequestTime), d.delay-time.Since(d.lastRequestTime))
+		if timeOut < 0 {
+			timeOut = 0
+		}
+		d.syncLock.Unlock()
+
+		immediately := false
+
+		select {
+		case <-d.execNowChan:
+			// run immediately
+			immediately = true
+			break
+		case <-d.triggerChan:
+			// external trigger - needs to re-evaluate
+			break
+		case <-d.cancelChan:
+			// cancel
+			return
+		case <-time.After(timeOut):
+			// time elapsed - check for execution
+			break
+
+		}
+
+		d.syncLock.Lock()
+		execute := immediately || time.Since(d.lastRequestTime) >= d.delay || time.Since(d.initialRequestTime) >= d.maxDelay
+		if !execute {
+			d.syncLock.Unlock()
+			continue
+		}
+
+		_ = langext.RunPanicSafe(d.action)
+		d.syncLock.Unlock()
+		return
+	}
+}
+
+func (d *DelayedCombiningInvoker) CancelPendingRequests() {
+	d.syncLock.Lock()
+	defer d.syncLock.Unlock()
+
+	syncext.WriteNonBlocking(d.cancelChan, true)
+}
+
+func (d *DelayedCombiningInvoker) HasPendingRequests() bool {
+	return d.executorRunning.Get()
+}
+
+func (d *DelayedCombiningInvoker) ExecuteNow() bool {
+	d.syncLock.Lock()
+	defer d.syncLock.Unlock()
+
+	if d.executorRunning.Get() {
+		syncext.WriteNonBlocking(d.execNowChan, true)
+		return true
+	} else {
+		return false
+	}
+}
+
+func (d *DelayedCombiningInvoker) WaitForCompletion(ctx context.Context) error {
+	return d.executorRunning.WaitWithContext(ctx, false)
+}

dataext/lruMap_test.go

@@ -1,7 +1,7 @@
 package dataext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"math/rand"
 	"strconv"
 	"testing"

dataext/merge_test.go

@@ -1,8 +1,8 @@
 package dataext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 

dataext/optional.go

@@ -0,0 +1,83 @@
+package dataext
+
+import (
+	"encoding/json"
+	"errors"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type JsonOpt[T any] struct {
+	isSet bool
+	value T
+}
+
+func NewJsonOpt[T any](v T) JsonOpt[T] {
+	return JsonOpt[T]{isSet: true, value: v}
+}
+
+func EmptyJsonOpt[T any]() JsonOpt[T] {
+	return JsonOpt[T]{isSet: false}
+}
+
+// MarshalJSON returns m as the JSON encoding of m.
+func (m JsonOpt[T]) MarshalJSON() ([]byte, error) {
+	if !m.isSet {
+		return []byte("null"), nil // actually this would be undefined - but undefined is not valid JSON
+	}
+
+	return json.Marshal(m.value)
+}
+
+// UnmarshalJSON sets *m to a copy of data.
+func (m *JsonOpt[T]) UnmarshalJSON(data []byte) error {
+	if m == nil {
+		return errors.New("JsonOpt: UnmarshalJSON on nil pointer")
+	}
+
+	m.isSet = true
+	return json.Unmarshal(data, &m.value)
+}
+
+func (m JsonOpt[T]) IsSet() bool {
+	return m.isSet
+}
+
+func (m JsonOpt[T]) IsUnset() bool {
+	return !m.isSet
+}
+
+func (m JsonOpt[T]) Value() (T, bool) {
+	if !m.isSet {
+		return *new(T), false
+	}
+	return m.value, true
+}
+
+func (m JsonOpt[T]) ValueOrNil() *T {
+	if !m.isSet {
+		return nil
+	}
+	return &m.value
+}
+
+func (m JsonOpt[T]) ValueDblPtrOrNil() **T {
+	if !m.isSet {
+		return nil
+	}
+	return langext.DblPtr(m.value)
+}
+
+func (m JsonOpt[T]) MustValue() T {
+	if !m.isSet {
+		panic("value not set")
+	}
+	return m.value
+}
+
+func (m JsonOpt[T]) IfSet(fn func(v T)) bool {
+	if !m.isSet {
+		return false
+	}
+	fn(m.value)
+	return true
+}

dataext/ringBuffer.go

@@ -0,0 +1,144 @@
+package dataext
+
+import "iter"
+
+type RingBuffer[T any] struct {
+	items    []T //
+	capacity int // max number of items the buffer can hold
+	size     int // how many items are in the buffer
+	head     int // ptr to next item
+}
+
+func NewRingBuffer[T any](capacity int) *RingBuffer[T] {
+	return &RingBuffer[T]{
+		items:    make([]T, capacity),
+		capacity: capacity,
+		size:     0,
+		head:     0,
+	}
+}
+
+func (rb *RingBuffer[T]) Push(item T) {
+	if rb.size < rb.capacity {
+		rb.size++
+	}
+	rb.items[rb.head] = item
+	rb.head = (rb.head + 1) % rb.capacity
+}
+
+func (rb *RingBuffer[T]) PushPop(item T) *T {
+	if rb.size < rb.capacity {
+		rb.size++
+		rb.items[rb.head] = item
+		rb.head = (rb.head + 1) % rb.capacity
+		return nil
+	} else {
+		prev := rb.items[rb.head]
+		rb.items[rb.head] = item
+		rb.head = (rb.head + 1) % rb.capacity
+		return &prev
+	}
+}
+
+func (rb *RingBuffer[T]) Peek() (T, bool) {
+	if rb.size == 0 {
+		return *new(T), false
+	}
+	return rb.items[(rb.head-1+rb.capacity)%rb.capacity], true
+}
+
+func (rb *RingBuffer[T]) Items() []T {
+	if rb.size < rb.capacity {
+		return rb.items[:rb.size]
+	}
+	return append(rb.items[rb.head:], rb.items[:rb.head]...)
+}
+
+func (rb *RingBuffer[T]) Size() int {
+	return rb.size
+}
+
+func (rb *RingBuffer[T]) Capacity() int {
+	return rb.capacity
+}
+
+func (rb *RingBuffer[T]) Clear() {
+	rb.size = 0
+	rb.head = 0
+}
+
+func (rb *RingBuffer[T]) IsFull() bool {
+	return rb.size == rb.capacity
+}
+
+func (rb *RingBuffer[T]) At(i int) T {
+	if i < 0 || i >= rb.size {
+		panic("Index out of bounds")
+	}
+	if rb.size < rb.capacity {
+		return rb.items[i]
+	}
+	return rb.items[(rb.head+i)%rb.capacity]
+}
+
+func (rb *RingBuffer[T]) Get(i int) (T, bool) {
+	if i < 0 || i >= rb.size {
+		return *new(T), false
+	}
+	if rb.size < rb.capacity {
+		return rb.items[i], true
+	}
+	return rb.items[(rb.head+i)%rb.capacity], true
+}
+
+func (rb *RingBuffer[T]) Iter() iter.Seq[T] {
+	return func(yield func(T) bool) {
+		for i := 0; i < rb.size; i++ {
+			if !yield(rb.At(i)) {
+				return
+			}
+		}
+	}
+}
+
+func (rb *RingBuffer[T]) Iter2() iter.Seq2[int, T] {
+	return func(yield func(int, T) bool) {
+		for i := 0; i < rb.size; i++ {
+			if !yield(i, rb.At(i)) {
+				return
+			}
+		}
+	}
+}
+
+func (rb *RingBuffer[T]) Remove(fnEqual func(v T) bool) int {
+	// Mike [2024-11-13]: I *really* tried to write an in-place algorithm to remove elements
+	//                    But after carful consideration, I left that as an exercise for future readers
+	//                    It is, suprisingly, non-trivial, especially because the head-ptr must be weirdly updated
+	//                    And out At() method does not work correctly with {head<>0 && size<capacity}
+
+	dc := 0
+	b := make([]T, rb.capacity)
+	bsize := 0
+
+	for i := 0; i < rb.size; i++ {
+		comp := rb.At(i)
+		if fnEqual(comp) {
+			dc++
+		} else {
+			b[bsize] = comp
+			bsize++
+		}
+	}
+
+	if dc == 0 {
+		return 0
+	}
+
+	rb.items = b
+	rb.size = bsize
+	rb.head = bsize % rb.capacity
+
+	return dc
+
+}

dataext/ringBuffer_test.go

@@ -0,0 +1,447 @@
+package dataext
+
+import "testing"
+
+func TestRingBufferPushAddsItem(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	if rb.Size() != 1 {
+		t.Errorf("Expected size 1, got %d", rb.Size())
+	}
+	if item, _ := rb.Peek(); item != 1 {
+		t.Errorf("Expected item 1, got %d", item)
+	}
+}
+
+func TestRingBufferPushPopReturnsOldestItem(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	if item := rb.PushPop(4); item == nil || *item != 1 {
+		t.Errorf("Expected item 1, got %v", item)
+	}
+}
+
+func TestRingBufferPeekReturnsLastPushedItem(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	if item, _ := rb.Peek(); item != 2 {
+		t.Errorf("Expected item 2, got %d", item)
+	}
+}
+
+func TestRingBufferOverflow1(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1) // overriden
+	rb.Push(2) // overriden
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	rb.Push(5)
+	rb.Push(7)
+	if rb.Size() != 5 {
+		t.Errorf("Expected size 4, got %d", rb.Size())
+	}
+	expected := []int{3, 9, 4, 5, 7}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferItemsReturnsAllItems(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	items := rb.Items()
+	expected := []int{1, 2, 3}
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferClearEmptiesBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Clear()
+	if rb.Size() != 0 {
+		t.Errorf("Expected size 0, got %d", rb.Size())
+	}
+}
+
+func TestRingBufferIsFullReturnsTrueWhenFull(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	if !rb.IsFull() {
+		t.Errorf("Expected buffer to be full")
+	}
+}
+
+func TestRingBufferAtReturnsCorrectItem(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	if item := rb.At(1); item != 2 {
+		t.Errorf("Expected item 2, got %d", item)
+	}
+}
+
+func TestRingBufferGetReturnsCorrectItem(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	if item, ok := rb.Get(1); !ok || item != 2 {
+		t.Errorf("Expected item 2, got %d", item)
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	rb.Push(2)
+	rb.Push(4)
+	removed := rb.Remove(func(v int) bool { return v == 2 })
+	if removed != 2 {
+		t.Errorf("Expected 2 items removed, got %d", removed)
+	}
+	if rb.Size() != 3 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+	expected := []int{1, 3, 4}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems2(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	rb.Push(2)
+	rb.Push(4)
+	removed := rb.Remove(func(v int) bool { return v == 3 })
+	if removed != 1 {
+		t.Errorf("Expected 2 items removed, got %d", removed)
+	}
+	if rb.Size() != 4 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+	expected := []int{1, 2, 2, 4}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems3(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	removed := rb.Remove(func(v int) bool { return v == 3 })
+	if removed != 1 {
+		t.Errorf("Expected 2 items removed, got %d", removed)
+	}
+	if rb.Size() != 4 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+	expected := []int{1, 2, 9, 4}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems4(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1) // overriden
+	rb.Push(2) // overriden
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	rb.Push(5)
+	rb.Push(7)
+	removed := rb.Remove(func(v int) bool { return v == 7 })
+	if removed != 1 {
+		t.Errorf("Expected 1 items removed, got %d", removed)
+	}
+	if rb.Size() != 4 {
+		t.Errorf("Expected size 4, got %d", rb.Size())
+	}
+	expected := []int{3, 9, 4, 5}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems5(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1) // overriden
+	rb.Push(2) // overriden
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	rb.Push(5)
+	rb.Push(7)
+	removed := rb.Remove(func(v int) bool { return v == 3 })
+	if removed != 1 {
+		t.Errorf("Expected 1 items removed, got %d", removed)
+	}
+	if rb.Size() != 4 {
+		t.Errorf("Expected size 4, got %d", rb.Size())
+	}
+	expected := []int{9, 4, 5, 7}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems6(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1) // overriden
+	rb.Push(2) // overriden
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	rb.Push(5)
+	rb.Push(7)
+	removed := rb.Remove(func(v int) bool { return v == 1 })
+	if removed != 0 {
+		t.Errorf("Expected 0 items removed, got %d", removed)
+	}
+	if rb.Size() != 5 {
+		t.Errorf("Expected size 5, got %d", rb.Size())
+	}
+	expected := []int{3, 9, 4, 5, 7}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+	if !rb.IsFull() {
+		t.Errorf("Expected buffer to not be full")
+	}
+}
+
+func TestRingBufferRemoveDeletesMatchingItems7(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1) // overriden
+	rb.Push(2) // overriden
+	rb.Push(3)
+	rb.Push(9)
+	rb.Push(4)
+	rb.Push(5)
+	rb.Push(7)
+	removed := rb.Remove(func(v int) bool { return v == 9 })
+	if removed != 1 {
+		t.Errorf("Expected 1 items removed, got %d", removed)
+	}
+	if rb.Size() != 4 {
+		t.Errorf("Expected size 4, got %d", rb.Size())
+	}
+	expected := []int{3, 4, 5, 7}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+	if rb.IsFull() {
+		t.Errorf("Expected buffer to not be full")
+	}
+}
+
+func TestRingBufferAddItemsToFullRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	rb.Push(4)
+	if rb.Size() != 3 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+	expected := []int{2, 3, 4}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferAddItemsToNonFullRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	if rb.Size() != 2 {
+		t.Errorf("Expected size 2, got %d", rb.Size())
+	}
+	expected := []int{1, 2}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveItemsFromNonFullRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	removed := rb.Remove(func(v int) bool { return v == 1 })
+	if removed != 1 {
+		t.Errorf("Expected 1 item removed, got %d", removed)
+	}
+	if rb.Size() != 1 {
+		t.Errorf("Expected size 1, got %d", rb.Size())
+	}
+	expected := []int{2}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveItemsFromFullRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	removed := rb.Remove(func(v int) bool { return v == 2 })
+	if removed != 1 {
+		t.Errorf("Expected 1 item removed, got %d", removed)
+	}
+	if rb.Size() != 2 {
+		t.Errorf("Expected size 2, got %d", rb.Size())
+	}
+	expected := []int{1, 3}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveMultipleItemsFromRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](5)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	rb.Push(2)
+	rb.Push(4)
+	removed := rb.Remove(func(v int) bool { return v == 2 })
+	if removed != 2 {
+		t.Errorf("Expected 2 items removed, got %d", removed)
+	}
+	if rb.Size() != 3 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+	expected := []int{1, 3, 4}
+	items := rb.Items()
+	for i, item := range items {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+	}
+}
+
+func TestRingBufferRemoveAllItemsFromRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	removed := rb.Remove(func(v int) bool { return true })
+	if removed != 3 {
+		t.Errorf("Expected 3 items removed, got %d", removed)
+	}
+	if rb.Size() != 0 {
+		t.Errorf("Expected size 0, got %d", rb.Size())
+	}
+}
+
+func TestRingBufferRemoveNoItemsFromRingBuffer(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	removed := rb.Remove(func(v int) bool { return false })
+	if removed != 0 {
+		t.Errorf("Expected 0 items removed, got %d", removed)
+	}
+	if rb.Size() != 3 {
+		t.Errorf("Expected size 3, got %d", rb.Size())
+	}
+}
+
+func TestRingBufferIteratesOverAllItems(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	expected := []int{1, 2, 3}
+	i := 0
+	for item := range rb.Iter() {
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+		i++
+	}
+	if i != len(expected) {
+		t.Errorf("Expected to iterate over %d items, but iterated over %d", len(expected), i)
+	}
+}
+
+func TestRingBufferIter2IteratesOverAllItemsWithIndices(t *testing.T) {
+	rb := NewRingBuffer[int](3)
+	rb.Push(1)
+	rb.Push(2)
+	rb.Push(3)
+	expected := []int{1, 2, 3}
+	i := 0
+	for index, item := range rb.Iter2() {
+		if index != i {
+			t.Errorf("Expected index %d, got %d", i, index)
+		}
+		if item != expected[i] {
+			t.Errorf("Expected item %d, got %d", expected[i], item)
+		}
+		i++
+	}
+	if i != len(expected) {
+		t.Errorf("Expected to iterate over %d items, but iterated over %d", len(expected), i)
+	}
+}

dataext/stack.go

@@ -2,7 +2,7 @@ package dataext
 
 import (
 	"errors"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"sync"
 )
 

dataext/structHash.go

@@ -6,7 +6,7 @@ import (
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"hash"
 	"io"
 	"reflect"

dataext/structHash_test.go

@@ -1,8 +1,8 @@
 package dataext
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 )
 

dataext/syncMap.go

@@ -0,0 +1,204 @@
+package dataext
+
+import "sync"
+
+type SyncMap[TKey comparable, TData any] struct {
+	data map[TKey]TData
+	lock sync.Mutex
+}
+
+func NewSyncMap[TKey comparable, TData any]() *SyncMap[TKey, TData] {
+	return &SyncMap[TKey, TData]{data: make(map[TKey]TData), lock: sync.Mutex{}}
+}
+
+func (s *SyncMap[TKey, TData]) Set(key TKey, data TData) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	s.data[key] = data
+}
+
+func (s *SyncMap[TKey, TData]) SetIfNotContains(key TKey, data TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if _, existsInPreState := s.data[key]; existsInPreState {
+		return false
+	}
+
+	s.data[key] = data
+
+	return true
+}
+
+func (s *SyncMap[TKey, TData]) SetIfNotContainsFunc(key TKey, data func() TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if _, existsInPreState := s.data[key]; existsInPreState {
+		return false
+	}
+
+	s.data[key] = data()
+
+	return true
+}
+
+func (s *SyncMap[TKey, TData]) Get(key TKey) (TData, bool) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if v, ok := s.data[key]; ok {
+		return v, true
+	} else {
+		return *new(TData), false
+	}
+}
+
+func (s *SyncMap[TKey, TData]) GetAndSetIfNotContains(key TKey, data TData) TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if v, ok := s.data[key]; ok {
+		return v
+	} else {
+		s.data[key] = data
+		return data
+	}
+}
+
+func (s *SyncMap[TKey, TData]) GetAndSetIfNotContainsFunc(key TKey, data func() TData) TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	if v, ok := s.data[key]; ok {
+		return v
+	} else {
+		dataObj := data()
+		s.data[key] = dataObj
+		return dataObj
+	}
+}
+
+func (s *SyncMap[TKey, TData]) Delete(key TKey) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	_, ok := s.data[key]
+
+	delete(s.data, key)
+
+	return ok
+}
+
+func (s *SyncMap[TKey, TData]) DeleteIf(fn func(key TKey, data TData) bool) int {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	rm := 0
+	for k, v := range s.data {
+		if fn(k, v) {
+			delete(s.data, k)
+			rm++
+		}
+	}
+
+	return rm
+}
+
+func (s *SyncMap[TKey, TData]) Clear() {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	s.data = make(map[TKey]TData)
+}
+
+func (s *SyncMap[TKey, TData]) Contains(key TKey) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	_, ok := s.data[key]
+
+	return ok
+}
+
+func (s *SyncMap[TKey, TData]) GetAllKeys() []TKey {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	r := make([]TKey, 0, len(s.data))
+
+	for k := range s.data {
+		r = append(r, k)
+	}
+
+	return r
+}
+
+func (s *SyncMap[TKey, TData]) GetAllValues() []TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	r := make([]TData, 0, len(s.data))
+
+	for _, v := range s.data {
+		r = append(r, v)
+	}
+
+	return r
+}
+
+func (s *SyncMap[TKey, TData]) Count() int {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TKey]TData)
+	}
+
+	return len(s.data)
+}

dataext/syncRingSet.go

@@ -0,0 +1,143 @@
+package dataext
+
+import "sync"
+
+type SyncRingSet[TData comparable] struct {
+	data map[TData]bool
+	lock sync.Mutex
+	ring *RingBuffer[TData]
+}
+
+func NewSyncRingSet[TData comparable](capacity int) *SyncRingSet[TData] {
+	return &SyncRingSet[TData]{
+		data: make(map[TData]bool, capacity+1),
+		lock: sync.Mutex{},
+		ring: NewRingBuffer[TData](capacity),
+	}
+}
+
+// Add adds `value` to the set
+// returns true  if the value was actually inserted (value did not exist beforehand)
+// returns false if the value already existed
+func (s *SyncRingSet[TData]) Add(value TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	_, existsInPreState := s.data[value]
+	if existsInPreState {
+		return false
+	}
+
+	prev := s.ring.PushPop(value)
+
+	s.data[value] = true
+	if prev != nil {
+		delete(s.data, *prev)
+	}
+
+	return true
+}
+
+func (s *SyncRingSet[TData]) AddAll(values []TData) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	for _, value := range values {
+		_, existsInPreState := s.data[value]
+		if existsInPreState {
+			continue
+		}
+
+		prev := s.ring.PushPop(value)
+
+		s.data[value] = true
+		if prev != nil {
+			delete(s.data, *prev)
+		}
+	}
+}
+
+func (s *SyncRingSet[TData]) Remove(value TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	_, existsInPreState := s.data[value]
+	if !existsInPreState {
+		return false
+	}
+
+	delete(s.data, value)
+	s.ring.Remove(func(v TData) bool { return value == v })
+
+	return true
+}
+
+func (s *SyncRingSet[TData]) RemoveAll(values []TData) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	for _, value := range values {
+		delete(s.data, value)
+		s.ring.Remove(func(v TData) bool { return value == v })
+	}
+}
+
+func (s *SyncRingSet[TData]) Contains(value TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	_, ok := s.data[value]
+
+	return ok
+}
+
+func (s *SyncRingSet[TData]) Get() []TData {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	r := make([]TData, 0, len(s.data))
+
+	for k := range s.data {
+		r = append(r, k)
+	}
+
+	return r
+}
+
+// AddIfNotContains
+// returns true  if the value was actually added (value did not exist beforehand)
+// returns false if the value already existed
+func (s *SyncRingSet[TData]) AddIfNotContains(key TData) bool {
+	return s.Add(key)
+}
+
+// RemoveIfContains
+// returns true  if the value was actually removed (value did exist beforehand)
+// returns false if the value did not exist in the set
+func (s *SyncRingSet[TData]) RemoveIfContains(key TData) bool {
+	return s.Remove(key)
+}

dataext/syncSet.go

@@ -7,6 +7,13 @@ type SyncSet[TData comparable] struct {
 	lock sync.Mutex
 }
 
+func NewSyncSet[TData comparable]() *SyncSet[TData] {
+	return &SyncSet[TData]{data: make(map[TData]bool), lock: sync.Mutex{}}
+}
+
+// Add adds `value` to the set
+// returns true  if the value was actually inserted (value did not exist beforehand)
+// returns false if the value already existed
 func (s *SyncSet[TData]) Add(value TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -15,10 +22,13 @@ func (s *SyncSet[TData]) Add(value TData) bool {
 		s.data = make(map[TData]bool)
 	}
 
-	_, ok := s.data[value]
-	s.data[value] = true
+	_, existsInPreState := s.data[value]
+	if existsInPreState {
+		return false
+	}
 
-	return !ok
+	s.data[value] = true
+	return true
 }
 
 func (s *SyncSet[TData]) AddAll(values []TData) {
@@ -34,6 +44,36 @@ func (s *SyncSet[TData]) AddAll(values []TData) {
 	}
 }
 
+func (s *SyncSet[TData]) Remove(value TData) bool {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	_, existsInPreState := s.data[value]
+	if !existsInPreState {
+		return false
+	}
+
+	delete(s.data, value)
+	return true
+}
+
+func (s *SyncSet[TData]) RemoveAll(values []TData) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	if s.data == nil {
+		s.data = make(map[TData]bool)
+	}
+
+	for _, value := range values {
+		delete(s.data, value)
+	}
+}
+
 func (s *SyncSet[TData]) Contains(value TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -63,3 +103,17 @@ func (s *SyncSet[TData]) Get() []TData {
 
 	return r
 }
+
+// AddIfNotContains
+// returns true  if the value was actually added (value did not exist beforehand)
+// returns false if the value already existed
+func (s *SyncSet[TData]) AddIfNotContains(key TData) bool {
+	return s.Add(key)
+}
+
+// RemoveIfContains
+// returns true  if the value was actually removed (value did exist beforehand)
+// returns false if the value did not exist in the set
+func (s *SyncSet[TData]) RemoveIfContains(key TData) bool {
+	return s.Remove(key)
+}

dataext/tuple.go

@@ -0,0 +1,241 @@
+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}
+}
+
+func NewSingle[T1 any](v1 T1) Single[T1] {
+	return Single[T1]{V1: v1}
+}
+
+func NewTuple1[T1 any](v1 T1) Single[T1] {
+	return Single[T1]{V1: 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}
+}
+
+func NewTuple[T1 any, T2 any](v1 T1, v2 T2) Tuple[T1, T2] {
+	return Tuple[T1, T2]{V1: v1, V2: v2}
+}
+
+func NewTuple2[T1 any, T2 any](v1 T1, v2 T2) Tuple[T1, T2] {
+	return Tuple[T1, T2]{V1: v1, V2: 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}
+}
+
+func NewTriple[T1 any, T2 any, T3 any](v1 T1, v2 T2, v3 T3) Triple[T1, T2, T3] {
+	return Triple[T1, T2, T3]{V1: v1, V2: v2, V3: v3}
+}
+
+func NewTuple3[T1 any, T2 any, T3 any](v1 T1, v2 T2, v3 T3) Triple[T1, T2, T3] {
+	return Triple[T1, T2, T3]{V1: v1, V2: v2, V3: 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}
+}
+
+func NewQuadruple[T1 any, T2 any, T3 any, T4 any](v1 T1, v2 T2, v3 T3, v4 T4) Quadruple[T1, T2, T3, T4] {
+	return Quadruple[T1, T2, T3, T4]{V1: v1, V2: v2, V3: v3, V4: v4}
+}
+
+func NewTuple4[T1 any, T2 any, T3 any, T4 any](v1 T1, v2 T2, v3 T3, v4 T4) Quadruple[T1, T2, T3, T4] {
+	return Quadruple[T1, T2, T3, T4]{V1: v1, V2: v2, V3: v3, V4: 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}
+
+}
+
+func NewQuintuple[T1 any, T2 any, T3 any, T4 any, T5 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5) Quintuple[T1, T2, T3, T4, T5] {
+	return Quintuple[T1, T2, T3, T4, T5]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5}
+}
+
+func NewTuple5[T1 any, T2 any, T3 any, T4 any, T5 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5) Quintuple[T1, T2, T3, T4, T5] {
+	return Quintuple[T1, T2, T3, T4, T5]{V1: v1, V2: v2, V3: v3, V4: v4, V5: 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}
+
+}
+
+func NewSextuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6) Sextuple[T1, T2, T3, T4, T5, T6] {
+	return Sextuple[T1, T2, T3, T4, T5, T6]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6}
+}
+
+func NewTuple6[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6) Sextuple[T1, T2, T3, T4, T5, T6] {
+	return Sextuple[T1, T2, T3, T4, T5, T6]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: 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}
+}
+
+func NewSeptuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7) Septuple[T1, T2, T3, T4, T5, T6, T7] {
+	return Septuple[T1, T2, T3, T4, T5, T6, T7]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: v7}
+}
+
+func NewTuple7[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7) Septuple[T1, T2, T3, T4, T5, T6, T7] {
+	return Septuple[T1, T2, T3, T4, T5, T6, T7]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: 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}
+}
+
+func NewOctuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7, v8 T8) Octuple[T1, T2, T3, T4, T5, T6, T7, T8] {
+	return Octuple[T1, T2, T3, T4, T5, T6, T7, T8]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: v7, V8: v8}
+}
+
+func NewTuple8[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7, v8 T8) Octuple[T1, T2, T3, T4, T5, T6, T7, T8] {
+	return Octuple[T1, T2, T3, T4, T5, T6, T7, T8]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: v7, V8: 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}
+}
+
+func NewNonuple[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any, T9 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7, v8 T8, v9 T9) Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9] {
+	return Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: v7, V8: v8, V9: v9}
+}
+func NewTuple9[T1 any, T2 any, T3 any, T4 any, T5 any, T6 any, T7 any, T8 any, T9 any](v1 T1, v2 T2, v3 T3, v4 T4, v5 T5, v6 T6, v7 T7, v8 T8, v9 T9) Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9] {
+	return Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9]{V1: v1, V2: v2, V3: v3, V4: v4, V5: v5, V6: v6, V7: v7, V8: v8, V9: v9}
+}

enums/enum.go

@@ -0,0 +1,33 @@
+package enums
+
+type Enum interface {
+	Valid() bool
+	ValuesAny() []any
+	ValuesMeta() []EnumMetaValue
+	VarName() string
+	TypeName() string
+	PackageName() 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

@@ -5,11 +5,12 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/dataext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/enums"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"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/langext"
 	"net/http"
 	"os"
 	"runtime/debug"
@@ -29,6 +30,10 @@ import (
 // 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 also add extra-data to an error with Extra(..)
+// in contrast to metadata is extradata always printed in the resulting error and is more intended for additional (programmatically readable) data in addition to the errortype
+// (metadata is more internal debug info/help)
+//
 // 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(..)`
@@ -54,21 +59,12 @@ import (
 //     => 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
+	wrappedErr          error
+	errorData           *ExErr
+	containsGinData     bool
+	containsContextData bool
+	noLog               bool
 }
 
 func Get(err error) *Builder {
@@ -80,12 +76,18 @@ func New(t ErrorType, msg string) *Builder {
 }
 
 func Wrap(err error, msg string) *Builder {
-	if !pkgconfig.RecursiveErrors {
-		v := FromError(err)
-		v.Message = msg
-		return &Builder{errorData: v}
+	if err == nil {
+		return &Builder{errorData: newExErr(CatSystem, TypeInternal, msg)} // prevent NPE if we call Wrap with err==nil
+	}
+
+	v := FromError(err)
+
+	if !pkgconfig.RecursiveErrors {
+		v.Message = msg
+		return &Builder{wrappedErr: err, errorData: v}
+	} else {
+		return &Builder{wrappedErr: err, errorData: wrapExErr(v, msg, CatWrap, 1)}
 	}
-	return &Builder{errorData: wrapExErr(FromError(err), msg, CatWrap, 1)}
 }
 
 // ----------------------------------------------------------------------------
@@ -105,6 +107,16 @@ func (b *Builder) WithMessage(msg string) *Builder {
 	return b
 }
 
+func (b *Builder) WithSeverity(v ErrorSeverity) *Builder {
+	b.errorData.Severity = v
+	return b
+}
+
+func (b *Builder) WithCategory(v ErrorCategory) *Builder {
+	b.errorData.Category = v
+	return b
+}
+
 // ----------------------------------------------------------------------------
 
 // Err changes the Severity to ERROR (default)
@@ -185,6 +197,13 @@ func (b *Builder) System() *Builder {
 
 // ----------------------------------------------------------------------------
 
+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))
 }
@@ -269,6 +288,18 @@ 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()))
 }
@@ -283,68 +314,86 @@ func (b *Builder) Errs(key string, val []error) *Builder {
 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.Time("ctx_startTimestamp", t)
+			b.Time("ctx_endTimestamp", time.Now())
 		}
 	}
-	b.Str("gin.method", req.Method)
-	b.Str("gin.path", g.FullPath())
-	b.Str("gin.header", formatHeader(g.Request.Header))
+	b.Str("gin_method", req.Method)
+	b.Str("gin_host", req.Host)
+	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())
+		b.Str("gin_url", req.URL.String())
 	}
 	if ctxVal := g.GetString("apiversion"); ctxVal != "" {
-		b.Str("gin.context.apiversion", ctxVal)
+		b.Str("gin_context_apiversion", ctxVal)
 	}
 	if ctxVal := g.GetString("uid"); ctxVal != "" {
-		b.Str("gin.context.uid", ctxVal)
+		b.Str("gin_context_uid", ctxVal)
 	}
 	if ctxVal := g.GetString("fcmId"); ctxVal != "" {
-		b.Str("gin.context.fcmid", ctxVal)
+		b.Str("gin_context_fcmid", ctxVal)
 	}
 	if ctxVal := g.GetString("reqid"); ctxVal != "" {
-		b.Str("gin.context.reqid", ctxVal)
+		b.Str("gin_context_reqid", ctxVal)
 	}
-	if req.Method != "GET" && req.Body != nil && 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()))
+	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.Bytes("gin.body", bin)
+						b.Str("gin_body", fmt.Sprintf("[[%v bytes | %s]]", len(bin), req.Header.Get("Content-Type")))
 					}
-				} else {
-					b.Str("gin.body", fmt.Sprintf("[[%v bytes]]", len(bin)))
 				}
 			}
 		}
+
+		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")))
+					}
+				}
+			}
+		}
+
 	}
 
+	pkgconfig.ExtendGinMeta(ctx, b, g, req)
+
 	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 := ""
+func (b *Builder) CtxData(method Method, ctx context.Context) *Builder {
+	pkgconfig.ExtendContextMeta(b, method, ctx)
+
+	b.containsContextData = true
+
+	return b
+}
+
+func extractHeader(header map[string][]string) []string {
+	r := make([]string, 0, len(header))
 	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
+			r = append(r, k+": "+value)
 		}
 	}
 	return r
@@ -352,18 +401,42 @@ func formatHeader(header map[string][]string) string {
 
 // ----------------------------------------------------------------------------
 
+// Extra adds additional data to the error
+// this is not like the other metadata (like Id(), Str(), etc)
+// this data is public and will be printed/outputted
+func (b *Builder) Extra(key string, val any) *Builder {
+	b.errorData.Extra[key] = val
+	return b
+}
+
+// ----------------------------------------------------------------------------
+
 // 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
-func (b *Builder) Build() error {
+// Can be gloablly configured with ZeroLogErrTraces and ZeroLogAllTraces
+// Can be locally suppressed with Builder.NoLog()
+func (b *Builder) Build(ctxs ...context.Context) error {
+	return b.BuildAsExerr(ctxs...)
+}
+
+func (b *Builder) BuildAsExerr(ctxs ...context.Context) *ExErr {
 	warnOnPkgConfigNotInitialized()
 
-	if pkgconfig.ZeroLogErrTraces && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
-		b.errorData.ShortLog(stackSkipLogger.Error())
-	} else if pkgconfig.ZeroLogAllTraces {
-		b.errorData.ShortLog(stackSkipLogger.Error())
+	for _, dctx := range ctxs {
+		b.CtxData(MethodBuild, dctx)
 	}
 
-	b.CallListener(MethodBuild)
+	if pkgconfig.DisableErrorWrapping && b.wrappedErr != nil {
+		return FromError(b.wrappedErr)
+	}
+
+	if pkgconfig.ZeroLogErrTraces && !b.noLog && (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Error())
+	} else if pkgconfig.ZeroLogAllTraces && !b.noLog {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Error())
+	}
+
+	b.errorData.CallListener(MethodBuild, ListenerOpt{NoLog: b.noLog})
 
 	return b.errorData
 }
@@ -372,32 +445,60 @@ func (b *Builder) Build() error {
 // 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) {
+	warnOnPkgConfigNotInitialized()
+
 	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.CtxData(MethodOutput, ctx)
+
+	// this is only here to add one level to the trace
+	// so that .Build() and .Output() and .Print() have the same depth and our stack-skip logger can have the same skip-count
+	b.doOutput(ctx, g)
+}
+
+func (b *Builder) doOutput(ctx context.Context, g *gin.Context) {
 	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())
+	if (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) && (pkgconfig.ZeroLogErrGinOutput || pkgconfig.ZeroLogAllGinOutput) {
+		b.errorData.Log(pkgconfig.ZeroLogger.Error())
+	} else if (b.errorData.Severity == SevWarn) && (pkgconfig.ZeroLogAllGinOutput) {
+		b.errorData.Log(pkgconfig.ZeroLogger.Warn())
 	}
 
-	b.CallListener(MethodOutput)
+	b.errorData.CallListener(MethodOutput, ListenerOpt{NoLog: b.noLog})
 }
 
 // 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())
+func (b *Builder) Print(ctxs ...context.Context) Proxy {
+	warnOnPkgConfigNotInitialized()
+
+	for _, dctx := range ctxs {
+		b.CtxData(MethodPrint, dctx)
 	}
 
-	b.CallListener(MethodPrint)
+	// this is only here to add one level to the trace
+	// so that .Build() and .Output() and .Print() have the same depth and our stack-skip logger can have the same skip-count
+	return b.doPrint()
+}
+
+func (b *Builder) doPrint() Proxy {
+	if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+		b.errorData.Log(pkgconfig.ZeroLogger.Error())
+	} else if b.errorData.Severity == SevWarn {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Warn())
+	} else if b.errorData.Severity == SevInfo {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Info())
+	} else {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Debug())
+	}
+
+	b.errorData.CallListener(MethodPrint, ListenerOpt{NoLog: b.noLog})
+
+	return Proxy{v: *b.errorData} // we return Proxy<Exerr> here instead of Exerr to prevent warnings on ignored err-returns
 }
 
 func (b *Builder) Format(level LogPrintLevel) string {
@@ -406,15 +507,27 @@ func (b *Builder) Format(level LogPrintLevel) string {
 
 // 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))
+func (b *Builder) Fatal(ctxs ...context.Context) {
 
-	b.CallListener(MethodFatal)
+	b.errorData.Severity = SevFatal
+
+	for _, dctx := range ctxs {
+		b.CtxData(MethodFatal, dctx)
+	}
+
+	// this is only here to add one level to the trace
+	// so that .Build() and .Output() and .Print() have the same depth and our stack-skip logger can have the same skip-count
+	b.doLogFatal()
+
+	b.errorData.CallListener(MethodFatal, ListenerOpt{NoLog: b.noLog})
 
 	os.Exit(1)
 }
 
+func (b *Builder) doLogFatal() {
+	b.errorData.Log(pkgconfig.ZeroLogger.WithLevel(zerolog.FatalLevel))
+}
+
 // ----------------------------------------------------------------------------
 
 func (b *Builder) addMeta(key string, mdtype metaDataType, val interface{}) *Builder {

exerr/constructor.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"go.mongodb.org/mongo-driver/bson/primitive"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"reflect"
 	"time"
 )
@@ -12,11 +12,78 @@ import (
 var reflectTypeStr = reflect.TypeOf("")
 
 func FromError(err error) *ExErr {
+
+	if err == nil {
+		// prevent NPE if we call FromError with err==nil
+		return &ExErr{
+			UniqueID:       newID(),
+			Category:       CatForeign,
+			Type:           TypeInternal,
+			Severity:       SevErr,
+			Timestamp:      time.Time{},
+			StatusCode:     nil,
+			Message:        "",
+			WrappedErrType: "nil",
+			WrappedErr:     err,
+			Caller:         "",
+			OriginalError:  nil,
+			Meta:           make(MetaMap),
+			Extra:          make(map[string]any),
+		}
+	}
+
+	//goland:noinspection GoTypeAssertionOnErrors
 	if verr, ok := err.(*ExErr); ok {
 		// A simple ExErr
 		return verr
 	}
 
+	//goland:noinspection GoTypeAssertionOnErrors
+	if verr, ok := err.(langext.PanicWrappedErr); ok {
+		return &ExErr{
+			UniqueID:       newID(),
+			Category:       CatForeign,
+			Type:           TypePanic,
+			Severity:       SevErr,
+			Timestamp:      time.Time{},
+			StatusCode:     nil,
+			Message:        "A panic occured",
+			WrappedErrType: fmt.Sprintf("%T", verr),
+			WrappedErr:     err,
+			Caller:         "",
+			OriginalError:  nil,
+			Meta: MetaMap{
+				"panic_object": {DataType: MDTString, Value: fmt.Sprintf("%+v", verr.RecoveredObj())},
+				"panic_type":   {DataType: MDTString, Value: fmt.Sprintf("%T", verr.RecoveredObj())},
+				"stack":        {DataType: MDTString, Value: verr.Stack},
+			},
+			Extra: make(map[string]any),
+		}
+	}
+
+	//goland:noinspection GoTypeAssertionOnErrors
+	if verr, ok := err.(*langext.PanicWrappedErr); ok && verr != nil {
+		return &ExErr{
+			UniqueID:       newID(),
+			Category:       CatForeign,
+			Type:           TypePanic,
+			Severity:       SevErr,
+			Timestamp:      time.Time{},
+			StatusCode:     nil,
+			Message:        "A panic occured",
+			WrappedErrType: fmt.Sprintf("%T", verr),
+			WrappedErr:     err,
+			Caller:         "",
+			OriginalError:  nil,
+			Meta: MetaMap{
+				"panic_object": {DataType: MDTString, Value: fmt.Sprintf("%+v", verr.RecoveredObj())},
+				"panic_type":   {DataType: MDTString, Value: fmt.Sprintf("%T", verr.RecoveredObj())},
+				"stack":        {DataType: MDTString, Value: verr.Stack},
+			},
+			Extra: make(map[string]any),
+		}
+	}
+
 	// A foreign error (eg a MongoDB exception)
 	return &ExErr{
 		UniqueID:       newID(),
@@ -27,9 +94,11 @@ func FromError(err error) *ExErr {
 		StatusCode:     nil,
 		Message:        err.Error(),
 		WrappedErrType: fmt.Sprintf("%T", err),
+		WrappedErr:     err,
 		Caller:         "",
 		OriginalError:  nil,
 		Meta:           getForeignMeta(err),
+		Extra:          make(map[string]any),
 	}
 }
 
@@ -43,9 +112,11 @@ func newExErr(cat ErrorCategory, errtype ErrorType, msg string) *ExErr {
 		StatusCode:     nil,
 		Message:        msg,
 		WrappedErrType: "",
+		WrappedErr:     nil,
 		Caller:         callername(2),
 		OriginalError:  nil,
 		Meta:           make(map[string]MetaValue),
+		Extra:          make(map[string]any),
 	}
 }
 
@@ -54,14 +125,16 @@ func wrapExErr(e *ExErr, msg string, cat ErrorCategory, stacktraceskip int) *ExE
 		UniqueID:       newID(),
 		Category:       cat,
 		Type:           TypeWrap,
-		Severity:       SevErr,
+		Severity:       e.Severity,
 		Timestamp:      time.Now(),
 		StatusCode:     e.StatusCode,
 		Message:        msg,
 		WrappedErrType: "",
+		WrappedErr:     nil,
 		Caller:         callername(1 + stacktraceskip),
 		OriginalError:  e,
 		Meta:           make(map[string]MetaValue),
+		Extra:          langext.CopyMap(langext.ForceMap(e.Extra)),
 	}
 }
 
@@ -178,7 +251,7 @@ func getReflectedMetaValues(value interface{}, remainingDepth int) map[string]Me
 
 	jsonval, err := json.Marshal(value)
 	if err != nil {
-		panic(err) // gets recovered later up
+		return map[string]MetaValue{"": {DataType: MDTString, Value: fmt.Sprintf("Failed to Marshal %T:\n%+v", value, value)}}
 	}
 
 	return map[string]MetaValue{"": {DataType: MDTString, Value: string(jsonval)}}

exerr/data.go

@@ -1,63 +1,14 @@
 package exerr
 
-import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+type Method string
+
+const (
+	MethodOutput Method = "OUTPUT"
+	MethodPrint  Method = "PRINT"
+	MethodBuild  Method = "BUILD"
+	MethodFatal  Method = "FATAL"
 )
 
-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       = ErrorType{"INTERNAL_ERROR", langext.Ptr(500)}
-	TypePanic          = ErrorType{"PANIC", langext.Ptr(500)}
-	TypeNotImplemented = ErrorType{"NOT_IMPLEMENTED", langext.Ptr(500)}
-
-	TypeWrap = ErrorType{"Wrap", nil}
-
-	TypeBindFailURI      = ErrorType{"BINDFAIL_URI", langext.Ptr(400)}
-	TypeBindFailQuery    = ErrorType{"BINDFAIL_QUERY", langext.Ptr(400)}
-	TypeBindFailJSON     = ErrorType{"BINDFAIL_JSON", langext.Ptr(400)}
-	TypeBindFailFormData = ErrorType{"BINDFAIL_FORMDATA", langext.Ptr(400)}
-
-	TypeUnauthorized = ErrorType{"UNAUTHORIZED", langext.Ptr(401)}
-	TypeAuthFailed   = ErrorType{"AUTH_FAILED", langext.Ptr(401)}
-
-	// other values come from pkgconfig
-)
-
-func NewType(key string, defStatusCode *int) ErrorType {
-	return ErrorType{key, defStatusCode}
-}
-
 type LogPrintLevel string
 
 const (

exerr/dataCategory.go

@@ -0,0 +1,89 @@
+package exerr
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"reflect"
+)
+
+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
+)
+
+func (e *ErrorCategory) UnmarshalJSON(bytes []byte) error {
+	return json.Unmarshal(bytes, &e.Category)
+}
+
+func (e ErrorCategory) MarshalJSON() ([]byte, error) {
+	return json.Marshal(e.Category)
+}
+
+func (e *ErrorCategory) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*e = ErrorCategory{}
+		return nil
+	}
+	if bt != bson.TypeString {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into String", bt))
+	}
+	var tt string
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*e = ErrorCategory{tt}
+	return nil
+}
+
+func (e ErrorCategory) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(e.Category)
+}
+
+func (e ErrorCategory) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = e.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&e))
+	} else {
+		val.Set(reflect.ValueOf(e))
+	}
+
+	return nil
+}
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllCategories = []ErrorCategory{CatWrap, CatSystem, CatUser, CatForeign}

exerr/dataSeverity.go

@@ -0,0 +1,91 @@
+package exerr
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"reflect"
+)
+
+type ErrorSeverity struct{ Severity string }
+
+var (
+	SevTrace = ErrorSeverity{"Trace"}
+	SevDebug = ErrorSeverity{"Debug"}
+	SevInfo  = ErrorSeverity{"Info"}
+	SevWarn  = ErrorSeverity{"Warn"}
+	SevErr   = ErrorSeverity{"Err"}
+	SevFatal = ErrorSeverity{"Fatal"}
+)
+
+func (e *ErrorSeverity) UnmarshalJSON(bytes []byte) error {
+	return json.Unmarshal(bytes, &e.Severity)
+}
+
+func (e ErrorSeverity) MarshalJSON() ([]byte, error) {
+	return json.Marshal(e.Severity)
+}
+
+func (e *ErrorSeverity) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*e = ErrorSeverity{}
+		return nil
+	}
+	if bt != bson.TypeString {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into String", bt))
+	}
+	var tt string
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+	*e = ErrorSeverity{tt}
+	return nil
+}
+
+func (e ErrorSeverity) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(e.Severity)
+}
+
+func (e ErrorSeverity) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = e.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&e))
+	} else {
+		val.Set(reflect.ValueOf(e))
+	}
+
+	return nil
+}
+
+//goland:noinspection GoUnusedGlobalVariable
+var AllSeverities = []ErrorSeverity{SevTrace, SevDebug, SevInfo, SevWarn, SevErr, SevFatal}

exerr/dataType.go

@@ -0,0 +1,156 @@
+package exerr
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/bsoncodec"
+	"go.mongodb.org/mongo-driver/bson/bsonrw"
+	"go.mongodb.org/mongo-driver/bson/bsontype"
+	"git.blackforestbytes.com/BlackForestBytes/goext/dataext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"reflect"
+)
+
+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))
+	TypeAssert         = NewType("ASSERT", 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))
+
+	TypeSQLQuery  = NewType("SQL_QUERY", langext.Ptr(500))
+	TypeSQLBuild  = NewType("SQL_BUILD", langext.Ptr(500))
+	TypeSQLDecode = NewType("SQL_DECODE", 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))
+
+	TypeInvalidImage    = NewType("IMAGEEXT_INVALID_IMAGE", langext.Ptr(400))
+	TypeInvalidMimeType = NewType("IMAGEEXT_INVALID_MIMETYPE", langext.Ptr(400))
+
+	// other values come from the downstream application that uses goext
+)
+
+func (e *ErrorType) UnmarshalJSON(bytes []byte) error {
+	var k string
+	err := json.Unmarshal(bytes, &k)
+	if err != nil {
+		return err
+	}
+
+	if d, ok := registeredTypes.Get(k); ok {
+		*e = d
+		return nil
+	} else {
+		*e = ErrorType{k, nil}
+		return nil
+	}
+}
+
+func (e ErrorType) MarshalJSON() ([]byte, error) {
+	return json.Marshal(e.Key)
+}
+
+func (e *ErrorType) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
+	if bt == bson.TypeNull {
+		// we can't set nil in UnmarshalBSONValue (so we use default(struct))
+		// Use mongoext.CreateGoExtBsonRegistry if you need to unmarsh pointer values
+		// https://stackoverflow.com/questions/75167597
+		// https://jira.mongodb.org/browse/GODRIVER-2252
+		*e = ErrorType{}
+		return nil
+	}
+	if bt != bson.TypeString {
+		return errors.New(fmt.Sprintf("cannot unmarshal %v into String", bt))
+	}
+	var tt string
+	err := bson.RawValue{Type: bt, Value: data}.Unmarshal(&tt)
+	if err != nil {
+		return err
+	}
+
+	if d, ok := registeredTypes.Get(tt); ok {
+		*e = d
+		return nil
+	} else {
+		*e = ErrorType{tt, nil}
+		return nil
+	}
+}
+
+func (e ErrorType) MarshalBSONValue() (bsontype.Type, []byte, error) {
+	return bson.MarshalValue(e.Key)
+}
+
+func (e ErrorType) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+	if val.Kind() == reflect.Ptr && val.IsNil() {
+		if !val.CanSet() {
+			return errors.New("ValueUnmarshalerDecodeValue")
+		}
+		val.Set(reflect.New(val.Type().Elem()))
+	}
+
+	tp, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr && len(src) == 0 {
+		val.Set(reflect.Zero(val.Type()))
+		return nil
+	}
+
+	err = e.UnmarshalBSONValue(tp, src)
+	if err != nil {
+		return err
+	}
+
+	if val.Kind() == reflect.Ptr {
+		val.Set(reflect.ValueOf(&e))
+	} else {
+		val.Set(reflect.ValueOf(e))
+	}
+
+	return nil
+}
+
+var registeredTypes = dataext.SyncMap[string, ErrorType]{}
+
+func NewType(key string, defStatusCode *int) ErrorType {
+	et := ErrorType{key, defStatusCode}
+
+	registeredTypes.Set(key, et)
+
+	return et
+}
+
+func ListRegisteredTypes() []ErrorType {
+	return registeredTypes.GetAllValues()
+}

exerr/data_test.go

@@ -0,0 +1,153 @@
+package exerr
+
+import (
+	"context"
+	"encoding/json"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
+	"testing"
+	"time"
+)
+
+func TestJSONMarshalErrorCategory(t *testing.T) {
+
+	c1 := CatSystem
+
+	jsonbin := tst.Must(json.Marshal(c1))(t)
+
+	var c2 ErrorCategory
+	tst.AssertNoErr(t, json.Unmarshal(jsonbin, &c2))
+
+	tst.AssertEqual(t, c1, c2)
+
+	tst.AssertEqual(t, string(jsonbin), "\"System\"")
+}
+
+func TestJSONMarshalErrorSeverity(t *testing.T) {
+
+	c1 := SevErr
+
+	jsonbin := tst.Must(json.Marshal(c1))(t)
+
+	var c2 ErrorSeverity
+	tst.AssertNoErr(t, json.Unmarshal(jsonbin, &c2))
+
+	tst.AssertEqual(t, c1, c2)
+
+	tst.AssertEqual(t, string(jsonbin), "\"Err\"")
+}
+
+func TestJSONMarshalErrorType(t *testing.T) {
+
+	c1 := TypeNotImplemented
+
+	jsonbin := tst.Must(json.Marshal(c1))(t)
+
+	var c2 ErrorType
+	tst.AssertNoErr(t, json.Unmarshal(jsonbin, &c2))
+
+	tst.AssertEqual(t, c1, c2)
+
+	tst.AssertEqual(t, string(jsonbin), "\"NOT_IMPLEMENTED\"")
+}
+
+func TestBSONMarshalErrorCategory(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 350*time.Millisecond)
+	defer cancel()
+
+	client, err := mongo.Connect(ctx)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+	err = client.Ping(ctx, nil)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+
+	primimd := primitive.NewObjectID()
+
+	_, err = client.Database("_test").Collection("goext-cicd").InsertOne(ctx, bson.M{"_id": primimd, "val": CatSystem})
+	tst.AssertNoErr(t, err)
+
+	cursor := client.Database("_test").Collection("goext-cicd").FindOne(ctx, bson.M{"_id": primimd, "val": bson.M{"$type": "string"}})
+
+	var c1 struct {
+		ID  primitive.ObjectID `bson:"_id"`
+		Val ErrorCategory      `bson:"val"`
+	}
+
+	err = cursor.Decode(&c1)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertEqual(t, c1.Val, CatSystem)
+}
+
+func TestBSONMarshalErrorSeverity(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 350*time.Millisecond)
+	defer cancel()
+
+	client, err := mongo.Connect(ctx)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+	err = client.Ping(ctx, nil)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+
+	primimd := primitive.NewObjectID()
+
+	_, err = client.Database("_test").Collection("goext-cicd").InsertOne(ctx, bson.M{"_id": primimd, "val": SevErr})
+	tst.AssertNoErr(t, err)
+
+	cursor := client.Database("_test").Collection("goext-cicd").FindOne(ctx, bson.M{"_id": primimd, "val": bson.M{"$type": "string"}})
+
+	var c1 struct {
+		ID  primitive.ObjectID `bson:"_id"`
+		Val ErrorSeverity      `bson:"val"`
+	}
+
+	err = cursor.Decode(&c1)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertEqual(t, c1.Val, SevErr)
+}
+
+func TestBSONMarshalErrorType(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 350*time.Millisecond)
+	defer cancel()
+
+	client, err := mongo.Connect(ctx)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+	err = client.Ping(ctx, nil)
+	if err != nil {
+		t.Skip("Skip test - no local mongo found")
+		return
+	}
+
+	primimd := primitive.NewObjectID()
+
+	_, err = client.Database("_test").Collection("goext-cicd").InsertOne(ctx, bson.M{"_id": primimd, "val": TypeNotImplemented})
+	tst.AssertNoErr(t, err)
+
+	cursor := client.Database("_test").Collection("goext-cicd").FindOne(ctx, bson.M{"_id": primimd, "val": bson.M{"$type": "string"}})
+
+	var c1 struct {
+		ID  primitive.ObjectID `bson:"_id"`
+		Val ErrorType          `bson:"val"`
+	}
+
+	err = cursor.Decode(&c1)
+	tst.AssertNoErr(t, err)
+
+	tst.AssertEqual(t, c1.Val, TypeNotImplemented)
+}

exerr/errinit.go

@@ -1,37 +1,62 @@
 package exerr
 
 import (
+	"context"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog"
+	"net/http"
+	"os"
 )
 
 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()
-	ExtendGinOutput     func(json map[string]any) // (Optionally) extend the gin output with more fields
-	ExtendGinDataOutput func(json map[string]any) // (Optionally) extend the gin `__data` output with more fields
+	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
+	DisableErrorWrapping   bool                                                                     // Disables the exerr.Wrap()...Build() function - will always return the original error
+	ZeroLogErrGinOutput    bool                                                                     // autom print zerolog logs on ginext.Error() / .Output(gin)  (for SevErr and SevFatal)
+	ZeroLogAllGinOutput    bool                                                                     // autom print zerolog logs on ginext.Error() / .Output(gin)  (for all Severities)
+	ExtendGinMeta          func(ctx context.Context, b *Builder, g *gin.Context, req *http.Request) // (Optionally) extend the final error meta values with additional data from the gin context (a few are automatically added, here more can be included)
+	ExtendContextMeta      func(b *Builder, method Method, dctx context.Context)                    // (Optionally) extend the final error meta values with additional data from the context (a few are automatically added, here more can be included)
+	ZeroLogger             zerolog.Logger                                                           // The logger used to print exerr log messages
 }
 
 type ErrorPackageConfigInit struct {
-	ZeroLogErrTraces    bool
-	ZeroLogAllTraces    bool
-	RecursiveErrors     bool
-	ExtendedGinOutput   bool
-	ExtendGinOutput     *func(json map[string]any)
-	ExtendGinDataOutput *func(json map[string]any)
+	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)
+	DisableErrorWrapping   *bool
+	ZeroLogErrGinOutput    *bool
+	ZeroLogAllGinOutput    *bool
+	ExtendGinMeta          func(ctx context.Context, b *Builder, g *gin.Context, req *http.Request)
+	ExtendContextMeta      func(b *Builder, method Method, dctx context.Context)
+	ZeroLogger             *zerolog.Logger
 }
 
 var initialized = false
 
 var pkgconfig = ErrorPackageConfig{
-	ZeroLogErrTraces:    true,
-	ZeroLogAllTraces:    false,
-	RecursiveErrors:     true,
-	ExtendedGinOutput:   false,
-	ExtendGinOutput:     func(json map[string]any) {},
-	ExtendGinDataOutput: func(json map[string]any) {},
+	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) {},
+	DisableErrorWrapping:   false,
+	ZeroLogErrGinOutput:    true,
+	ZeroLogAllGinOutput:    false,
+	ExtendGinMeta:          func(ctx context.Context, b *Builder, g *gin.Context, req *http.Request) {},
+	ExtendContextMeta:      func(b *Builder, method Method, dctx context.Context) {},
 }
 
 // Init initializes the exerr packages
@@ -42,18 +67,65 @@ func Init(cfg ErrorPackageConfigInit) {
 		panic("Cannot re-init error package")
 	}
 
+	ego := func(err *ExErr, json map[string]any) {}
+	egdo := func(err *ExErr, depth int, json map[string]any) {}
+	egm := func(ctx context.Context, b *Builder, g *gin.Context, req *http.Request) {}
+	egcm := func(b *Builder, method Method, dctx context.Context) {}
+
+	if cfg.ExtendGinOutput != nil {
+		ego = cfg.ExtendGinOutput
+	}
+	if cfg.ExtendGinDataOutput != nil {
+		egdo = cfg.ExtendGinDataOutput
+	}
+	if cfg.ExtendGinMeta != nil {
+		egm = cfg.ExtendGinMeta
+	}
+	if cfg.ExtendContextMeta != nil {
+		egcm = cfg.ExtendContextMeta
+	}
+
+	var logger zerolog.Logger
+	if cfg.ZeroLogger != nil {
+		logger = *cfg.ZeroLogger
+	} else {
+		logger = newDefaultLogger()
+	}
+
 	pkgconfig = ErrorPackageConfig{
-		ZeroLogErrTraces:    cfg.ZeroLogErrTraces,
-		ZeroLogAllTraces:    cfg.ZeroLogAllTraces,
-		RecursiveErrors:     cfg.RecursiveErrors,
-		ExtendedGinOutput:   cfg.ExtendedGinOutput,
-		ExtendGinOutput:     langext.Coalesce(cfg.ExtendGinOutput, func(json map[string]any) {}),
-		ExtendGinDataOutput: langext.Coalesce(cfg.ExtendGinDataOutput, func(json map[string]any) {}),
+		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,
+		DisableErrorWrapping:   langext.Coalesce(cfg.DisableErrorWrapping, pkgconfig.DisableErrorWrapping),
+		ZeroLogAllGinOutput:    langext.Coalesce(cfg.ZeroLogAllGinOutput, pkgconfig.ZeroLogAllGinOutput),
+		ZeroLogErrGinOutput:    langext.Coalesce(cfg.ZeroLogErrGinOutput, pkgconfig.ZeroLogErrGinOutput),
+		ExtendGinMeta:          egm,
+		ExtendContextMeta:      egcm,
+		ZeroLogger:             logger,
 	}
 
 	initialized = true
 }
 
+func newDefaultLogger() zerolog.Logger {
+	cw := zerolog.ConsoleWriter{
+		Out:        os.Stdout,
+		TimeFormat: "2006-01-02 15:04:05 Z07:00",
+	}
+
+	multi := zerolog.MultiLevelWriter(cw)
+
+	return zerolog.New(multi).With().Timestamp().CallerWithSkipFrameCount(5).Logger()
+}
+
+func Initialized() bool {
+	return initialized
+}
+
 func warnOnPkgConfigNotInitialized() {
 	if !initialized {
 		fmt.Printf("\n")

exerr/exerr.go

@@ -1,9 +1,11 @@
 package exerr
 
 import (
+	"fmt"
 	"github.com/rs/xid"
 	"github.com/rs/zerolog"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"reflect"
 	"strings"
 	"time"
 )
@@ -20,29 +22,97 @@ type ExErr struct {
 
 	Message        string `json:"message"`
 	WrappedErrType string `json:"wrappedErrType"`
+	WrappedErr     any    `json:"-"`
 	Caller         string `json:"caller"`
 
-	OriginalError *ExErr
+	OriginalError *ExErr `json:"originalError"`
 
-	Meta MetaMap `json:"meta"`
+	Extra map[string]any `json:"extra"`
+	Meta  MetaMap        `json:"meta"`
 }
 
 func (ee *ExErr) Error() string {
-	return ee.Message
+	return ee.RecursiveMessage()
 }
 
+// Unwrap must be implemented so that some error.XXX methods work
 func (ee *ExErr) Unwrap() error {
+	if ee.OriginalError == nil {
+
+		if ee.WrappedErr != nil {
+			if werr, ok := ee.WrappedErr.(error); ok {
+				return werr
+			}
+		}
+
+		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 {
+
+	// [LogPrintShort]
+	//
+	// - Only print message and type
+	// - Used e.g. for logging to the console when Build is called
+	// - also used in Print() if level == Warn/Info
+	//
+	// [LogPrintOverview]
+	//
+	// - print message, extra and errortrace
+	//
+	// [LogPrintFull]
+	//
+	// - print full error, with meta and extra, and trace, etc
+	// - Used in Output() and Print()
+	//
+
 	if lvl == LogPrintShort {
 
 		msg := ee.Message
+		if msg == "" {
+			msg = ee.RecursiveMessage()
+		}
 		if ee.OriginalError != nil && ee.OriginalError.Category == CatForeign {
 			msg = msg + " (" + strings.ReplaceAll(ee.OriginalError.Message, "\n", " ") + ")"
 		}
@@ -57,6 +127,10 @@ func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
 
 		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
 
+		for exk, exv := range ee.Extra {
+			str += fmt.Sprintf(" # [[[ %s ==> %v ]]]\n", exk, exv)
+		}
+
 		indent := ""
 		for curr := ee; curr != nil; curr = curr.OriginalError {
 			indent += "  "
@@ -78,12 +152,16 @@ func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
 
 		str := "[" + ee.RecursiveType().Key + "] <" + ee.UniqueID + "> " + strings.ReplaceAll(ee.RecursiveMessage(), "\n", " ") + "\n"
 
+		for exk, exv := range ee.Extra {
+			str += fmt.Sprintf(" # [[[ %s ==> %v ]]]\n", exk, exv)
+		}
+
 		indent := ""
 		for curr := ee; curr != nil; curr = curr.OriginalError {
 			indent += "  "
 
-			etype := ee.Type.Key
-			if ee.Type == TypeWrap {
+			etype := curr.Type.Key
+			if curr.Type == TypeWrap {
 				etype = "~"
 			}
 
@@ -123,19 +201,37 @@ func (ee *ExErr) FormatLog(lvl LogPrintLevel) string {
 }
 
 func (ee *ExErr) ShortLog(evt *zerolog.Event) {
-	ee.Meta.Apply(evt).Msg(ee.FormatLog(LogPrintShort))
+	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
+// = first error (top-down) that is not 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 {
+		if curr.Message != "" && curr.Category != CatForeign {
 			return curr.Message
 		}
 	}
 
-	// fallback to self
+	// ==== [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
 }
 
@@ -162,7 +258,6 @@ func (ee *ExErr) RecursiveStatuscode() *int {
 		}
 	}
 
-	// fallback to <empty>
 	return nil
 }
 
@@ -179,6 +274,19 @@ func (ee *ExErr) RecursiveCategory() ErrorCategory {
 	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
@@ -187,6 +295,142 @@ func (ee *ExErr) Depth() int {
 	}
 }
 
+// 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
+}
+
+func (ee *ExErr) GetExtra(key string) (any, bool) {
+	if v, ok := ee.Extra[key]; ok {
+		return v, true
+	}
+
+	return nil, false
+}
+
+func (ee *ExErr) UniqueIDs() []string {
+	ids := make([]string, 0, 1)
+	for curr := ee; curr != nil; curr = curr.OriginalError {
+		ids = append(ids, curr.UniqueID)
+	}
+	return ids
+}
+
+// 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 +1,102 @@
+package exerr
+
+import (
+	"errors"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
+	"os"
+	"testing"
+)
+
+func TestMain(m *testing.M) {
+	if !Initialized() {
+		Init(ErrorPackageConfigInit{ZeroLogErrTraces: langext.PFalse, ZeroLogAllTraces: langext.PFalse})
+	}
+	os.Exit(m.Run())
+}
+
+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

@@ -2,51 +2,125 @@ package exerr
 
 import (
 	"github.com/gin-gonic/gin"
-	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	json "git.blackforestbytes.com/BlackForestBytes/goext/gojson"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"net/http"
 	"time"
 )
 
-func (ee *ExErr) toJson() gin.H {
-	json := gin.H{}
+func (ee *ExErr) toJson(depth int, applyExtendListener bool, outputMeta bool) langext.H {
+	ginJson := langext.H{}
 
 	if ee.UniqueID != "" {
-		json["id"] = ee.UniqueID
+		ginJson["id"] = ee.UniqueID
 	}
 	if ee.Category != CatWrap {
-		json["category"] = ee.Category
+		ginJson["category"] = ee.Category.Category
 	}
 	if ee.Type != TypeWrap {
-		json["type"] = ee.Type
+		ginJson["type"] = ee.Type.Key
 	}
 	if ee.StatusCode != nil {
-		json["statuscode"] = ee.StatusCode
+		ginJson["statuscode"] = ee.StatusCode
 	}
 	if ee.Message != "" {
-		json["message"] = ee.Message
+		ginJson["message"] = ee.Message
 	}
 	if ee.Caller != "" {
-		json["caller"] = ee.Caller
+		ginJson["caller"] = ee.Caller
 	}
 	if ee.Severity != SevErr {
-		json["severity"] = ee.Severity
+		ginJson["severity"] = ee.Severity.Severity
 	}
 	if ee.Timestamp != (time.Time{}) {
-		json["time"] = ee.Timestamp.Format(time.RFC3339)
+		ginJson["time"] = ee.Timestamp.Format(time.RFC3339)
 	}
 	if ee.WrappedErrType != "" {
-		json["wrappedErrType"] = ee.WrappedErrType
+		ginJson["wrappedErrType"] = ee.WrappedErrType
 	}
 	if ee.OriginalError != nil {
-		json["original"] = ee.OriginalError.toJson()
+		ginJson["original"] = ee.OriginalError.toJson(depth+1, applyExtendListener, outputMeta)
 	}
 
-	pkgconfig.ExtendGinDataOutput(json)
+	if outputMeta {
+		metaJson := langext.H{}
+		for metaKey, metaVal := range ee.Meta {
+			metaJson[metaKey] = metaVal.rawValueForJson()
+		}
+		ginJson["meta"] = metaJson
 
-	return json
+		extraJson := langext.H{}
+		for extraKey, extraVal := range ee.Extra {
+			extraJson[extraKey] = extraVal
+		}
+		ginJson["extra"] = extraJson
+	}
+
+	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)
+	}
+
+	for exkey, exval := range ee.Extra {
+
+		// ensure we do not override existing values
+		for {
+			if _, ok := apiOutput[exkey]; ok {
+				exkey = "_" + exkey
+			} else {
+				break
+			}
+		}
+
+		apiOutput[exkey] = exval
+	}
+
+	if applyExtendListener {
+		pkgconfig.ExtendGinOutput(ee, apiOutput)
+	}
+
+	return apiOutput
 }
 
 func (ee *ExErr) Output(g *gin.Context) {
+
+	warnOnPkgConfigNotInitialized()
+
 	var statuscode = http.StatusInternalServerError
 
 	var baseCat = ee.RecursiveCategory()
@@ -65,20 +139,7 @@ func (ee *ExErr) Output(g *gin.Context) {
 		statuscode = *baseType.DefaultStatusCode
 	}
 
-	warnOnPkgConfigNotInitialized()
-
-	ginOutput := gin.H{
-		"errorid":   ee.UniqueID,
-		"message":   ee.RecursiveMessage(),
-		"errorcode": ee.RecursiveType(),
-		"category":  ee.RecursiveCategory(),
-	}
-
-	if pkgconfig.ExtendedGinOutput {
-		ginOutput["__data"] = ee.toJson()
-	}
-
-	pkgconfig.ExtendGinOutput(ginOutput)
+	ginOutput := ee.ToAPIJson(true, pkgconfig.ExtendedGinOutput, pkgconfig.IncludeMetaInGinOutput)
 
 	g.Render(statuscode, json.GoJsonRender{Data: ginOutput, NilSafeSlices: true, NilSafeMaps: true})
 }

exerr/helper.go

@@ -24,6 +24,8 @@ func IsFrom(e error, original error) bool {
 	if e == nil {
 		return false
 	}
+
+	//goland:noinspection GoDirectComparisonOfErrors
 	if e == original {
 		return true
 	}
@@ -84,3 +86,41 @@ func MessageMatch(e error, matcher func(string) bool) bool {
 
 	return false
 }
+
+// OriginalError returns the lowest level error, probably the original/external error that was originally wrapped
+func OriginalError(e error) error {
+	if e == nil {
+		return nil
+	}
+
+	//goland:noinspection GoTypeAssertionOnErrors
+	bmerr, ok := e.(*ExErr)
+	for !ok {
+		return e
+	}
+
+	for bmerr.OriginalError != nil {
+		bmerr = bmerr.OriginalError
+	}
+
+	if bmerr.WrappedErr != nil {
+		if werr, ok := bmerr.WrappedErr.(error); ok {
+			return werr
+		}
+	}
+
+	return bmerr
+}
+
+func UniqueID(v error) *string {
+	if v == nil {
+		return nil
+	}
+
+	//goland:noinspection GoTypeAssertionOnErrors
+	if verr, ok := v.(*ExErr); ok {
+		return &verr.UniqueID
+	}
+
+	return nil
+}

exerr/listener.go

@@ -4,16 +4,11 @@ import (
 	"sync"
 )
 
-type Method string
+type ListenerOpt struct {
+	NoLog bool
+}
 
-const (
-	MethodOutput Method = "OUTPUT"
-	MethodPrint  Method = "PRINT"
-	MethodBuild  Method = "BUILD"
-	MethodFatal  Method = "FATAL"
-)
-
-type Listener = func(method Method, v *ExErr)
+type Listener = func(method Method, v *ExErr, opt ListenerOpt)
 
 var listenerLock = sync.Mutex{}
 var listener = make([]Listener, 0)
@@ -25,13 +20,11 @@ func RegisterListener(l Listener) {
 	listener = append(listener, l)
 }
 
-func (b *Builder) CallListener(m Method) {
-	valErr := b.errorData
-
+func (ee *ExErr) CallListener(m Method, opt ListenerOpt) {
 	listenerLock.Lock()
 	defer listenerLock.Unlock()
 
 	for _, v := range listener {
-		v(m, valErr)
+		v(m, ee, opt)
 	}
 }

exerr/meta.go

@@ -5,10 +5,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"github.com/rs/zerolog"
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"math"
 	"strconv"
 	"strings"
 	"time"
@@ -43,6 +44,7 @@ const (
 	MDTID          metaDataType = "ID"
 	MDTAny         metaDataType = "Interface"
 	MDTNil         metaDataType = "Nil"
+	MDTEnum        metaDataType = "Enum"
 )
 
 type MetaValue struct {
@@ -131,6 +133,8 @@ func (v MetaValue) SerializeValue() (string, error) {
 		return string(r), nil
 	case MDTNil:
 		return "", nil
+	case MDTEnum:
+		return v.Value.(EnumWrap).Serialize(), nil
 	}
 	return "", errors.New("Unknown type: " + string(v.DataType))
 }
@@ -208,27 +212,41 @@ func (v MetaValue) ShortString(lim int) string {
 		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) *zerolog.Event {
+func (v MetaValue) Apply(key string, evt *zerolog.Event, limitLen *int) *zerolog.Event {
 	switch v.DataType {
 	case MDTString:
-		return evt.Str(key, v.Value.(string))
+		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 {
-			return evt.Str(key, v.Value.(AnyWrap).Json)
+			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>>")
 		}
-		return evt.Str(key, langext.CoalesceString(v.Value.(*string), "<<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:
@@ -270,6 +288,14 @@ func (v MetaValue) Apply(key string, evt *zerolog.Event) *zerolog.Event {
 		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)")
 }
@@ -511,6 +537,10 @@ func (v *MetaValue) Deserialize(value string, datatype metaDataType) error {
 		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))
 }
@@ -581,10 +611,88 @@ func (v MetaValue) ValueString() string {
 		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
+	}
+	if v.DataType == MDTFloat32 {
+		if math.IsNaN(float64(v.Value.(float32))) {
+			return "float64::NaN"
+		} else if math.IsInf(float64(v.Value.(float32)), +1) {
+			return "float64::+inf"
+		} else if math.IsInf(float64(v.Value.(float32)), -1) {
+			return "float64::-inf"
+		} else {
+			return v.Value
+		}
+	}
+	if v.DataType == MDTFloat64 {
+		if math.IsNaN(v.Value.(float64)) {
+			return "float64::NaN"
+		} else if math.IsInf(v.Value.(float64), +1) {
+			return "float64::+inf"
+		} else if math.IsInf(v.Value.(float64), -1) {
+			return "float64::-inf"
+		} else {
+			return v.Value
+		}
+	}
+	return v.Value
+}
+
 func (mm MetaMap) FormatOneLine(singleMaxLen int) string {
 	r := ""
 
@@ -612,6 +720,9 @@ func (mm MetaMap) FormatMultiLine(indentFront string, indentKeys string, maxLenV
 		if key == "gin.body" {
 			continue
 		}
+		if key == "gin_body" {
+			continue
+		}
 
 		r += indentFront
 		r += indentKeys
@@ -629,9 +740,9 @@ func (mm MetaMap) Any() bool {
 	return len(mm) > 0
 }
 
-func (mm MetaMap) Apply(evt *zerolog.Event) *zerolog.Event {
+func (mm MetaMap) Apply(evt *zerolog.Event, limitLen *int) *zerolog.Event {
 	for key, val := range mm {
-		evt = val.Apply(key, evt)
+		evt = val.Apply(key, evt, limitLen)
 	}
 	return evt
 }

exerr/proxy.go

@@ -0,0 +1,13 @@
+package exerr
+
+type Proxy struct {
+	v ExErr
+}
+
+func (p *Proxy) UniqueID() string {
+	return p.v.UniqueID
+}
+
+func (p *Proxy) Get() ExErr {
+	return p.v
+}

exerr/typeWrapper.go

@@ -4,7 +4,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"github.com/rs/zerolog/log"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/enums"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"strings"
 )
 
@@ -131,3 +132,58 @@ func deserializeAnyWrap(v string) AnyWrap {
 		}
 	}
 }
+
+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

@@ -14,6 +14,9 @@ type AppContext struct {
 }
 
 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,
@@ -22,6 +25,15 @@ func CreateAppContext(g *gin.Context, innerCtx context.Context, cancelFn context
 	}
 }
 
+func CreateBackgroundAppContext() *AppContext {
+	return &AppContext{
+		inner:      context.Background(),
+		cancelFunc: nil,
+		cancelled:  false,
+		GinContext: nil,
+	}
+}
+
 func (ac *AppContext) Deadline() (deadline time.Time, ok bool) {
 	return ac.inner.Deadline()
 }
@@ -38,6 +50,10 @@ 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()
@@ -50,10 +66,3 @@ func (ac *AppContext) RequestURI() string {
 		return ""
 	}
 }
-
-func (ac *AppContext) FinishSuccess(res HTTPResponse) HTTPResponse {
-	if ac.cancelled {
-		panic("Cannot finish a cancelled request")
-	}
-	return res
-}

ginext/commonMiddlewares.go

@@ -0,0 +1,12 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.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

@@ -3,13 +3,17 @@ package ginext
 import (
 	"github.com/gin-gonic/gin"
 	"net/http"
+	"strings"
 )
 
-func CorsMiddleware() gin.HandlerFunc {
+func CorsMiddleware(allowheader []string, exposeheader []string) 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-Headers", strings.Join(allowheader, ", "))
+		if len(exposeheader) > 0 {
+			c.Writer.Header().Set("Access-Control-Expose-Headers", strings.Join(exposeheader, ", "))
+		}
 		c.Writer.Header().Set("Access-Control-Allow-Methods", "OPTIONS, GET, POST, PUT, PATCH, DELETE, COUNT")
 
 		if c.Request.Method == "OPTIONS" {

ginext/engine.go

@@ -1,50 +1,238 @@
 package ginext
 
 import (
+	"fmt"
 	"github.com/gin-gonic/gin"
+	"github.com/rs/zerolog/log"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/mathext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
+	"net"
 	"net/http"
+	"net/http/httptest"
+	"regexp"
+	"strings"
 	"time"
 )
 
 type GinWrapper struct {
 	engine          *gin.Engine
-	SuppressGinLogs bool
+	suppressGinLogs bool
 
-	allowCors      bool
-	ginDebug       bool
-	requestTimeout time.Duration
+	opt                   Options
+	allowCors             bool
+	corsAllowHeader       []string
+	corsExposeHeader      []string
+	ginDebug              bool
+	bufferBody            bool
+	requestTimeout        time.Duration
+	listenerBeforeRequest []func(g *gin.Context)
+	listenerAfterRequest  []func(g *gin.Context, resp HTTPResponse)
+
+	buildRequestBindError func(g *gin.Context, fieldtype string, err error) HTTPResponse
+
+	routeSpecs []ginRouteSpec
 }
 
-func NewEngine(allowCors bool, ginDebug bool, timeout time.Duration) *GinWrapper {
+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
+	CorsAllowHeader          *[]string                                                      // override the default values of Access-Control-Allow-Headers (AllowCors must be true)
+	CorsExposeHeader         *[]string                                                      // return Access-Control-Expose-Headers (AllowCors must be true)
+	GinDebug                 *bool                                                          // Set gin.debug to true (adds more logs)
+	SuppressGinLogs          *bool                                                          // Suppress our custom gin logs (even if GinDebug == true)
+	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
+	DebugTrimHandlerPrefixes []string                                                       // Trim these prefixes from the handler names in the debug print
+	DebugReplaceHandlerNames map[string]string                                              // Replace handler names in debug output
+	BuildRequestBindError    func(g *gin.Context, fieldtype string, err error) HTTPResponse // Override function which generates the HTTPResponse errors that are returned by the preContext..Start() methids
+}
+
+// NewEngine creates a new (wrapped) ginEngine
+func NewEngine(opt Options) *GinWrapper {
+	ginDebug := langext.Coalesce(opt.GinDebug, true)
+	if ginDebug {
+		gin.SetMode(gin.DebugMode)
+
+		// do not debug-print routes
+		gin.DebugPrintRouteFunc = func(_, _, _ string, _ int) {}
+
+	} else {
+		gin.SetMode(gin.ReleaseMode)
+
+		// do not debug-print routes
+		gin.DebugPrintRouteFunc = func(_, _, _ string, _ int) {}
+	}
+
 	engine := gin.New()
 
 	wrapper := &GinWrapper{
-		engine:          engine,
-		SuppressGinLogs: false,
-		allowCors:       allowCors,
-		ginDebug:        ginDebug,
-		requestTimeout:  timeout,
+		engine:                engine,
+		opt:                   opt,
+		suppressGinLogs:       langext.Coalesce(opt.SuppressGinLogs, false),
+		allowCors:             langext.Coalesce(opt.AllowCors, false),
+		corsAllowHeader:       langext.Coalesce(opt.CorsAllowHeader, []string{"Content-Type", "Content-Length", "Accept-Encoding", "X-CSRF-Token", "Authorization", "accept", "origin", "Cache-Control", "X-Requested-With"}),
+		corsExposeHeader:      langext.Coalesce(opt.CorsExposeHeader, []string{}),
+		ginDebug:              ginDebug,
+		bufferBody:            langext.Coalesce(opt.BufferBody, false),
+		requestTimeout:        langext.Coalesce(opt.Timeout, 24*time.Hour),
+		listenerBeforeRequest: opt.ListenerBeforeRequest,
+		listenerAfterRequest:  opt.ListenerAfterRequest,
+		buildRequestBindError: langext.Conditional(opt.BuildRequestBindError == nil, defaultBuildRequestBindError, opt.BuildRequestBindError),
 	}
 
 	engine.RedirectFixedPath = false
 	engine.RedirectTrailingSlash = false
 
-	if allowCors {
-		engine.Use(CorsMiddleware())
+	if wrapper.allowCors {
+		engine.Use(CorsMiddleware(wrapper.corsAllowHeader, wrapper.corsExposeHeader))
 	}
 
-	if ginDebug {
+	if ginDebug && !wrapper.suppressGinLogs {
 		ginlogger := gin.Logger()
-		engine.Use(func(context *gin.Context) {
-			if !wrapper.SuppressGinLogs {
-				ginlogger(context)
-			}
-		})
+		engine.Use(func(context *gin.Context) { ginlogger(context) })
 	}
-
 	return wrapper
 }
 
-func (w *GinWrapper) ServeHTTP(writer http.ResponseWriter, request *http.Request) {
-	w.engine.ServeHTTP(writer, request)
+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):]
+		}
+	}
+
+	for _, pfx := range w.opt.DebugTrimHandlerPrefixes {
+		if strings.HasPrefix(fname, pfx) {
+			fname = fname[len(pfx):]
+		}
+	}
+
+	for k, v := range langext.ForceMap(w.opt.DebugReplaceHandlerNames) {
+		if strings.EqualFold(fname, k) {
+			fname = v
+		}
+	}
+
+	return fname
+}
+
+// ServeHTTP only used for unit tests
+func (w *GinWrapper) ServeHTTP(req *http.Request) *httptest.ResponseRecorder {
+	respRec := httptest.NewRecorder()
+	w.engine.ServeHTTP(respRec, req)
+	return respRec
+}
+
+// ForwardRequest manually inserts a request into this router
+// = behaves as if the request came from the outside (and writes the response to `writer`)
+func (w *GinWrapper) ForwardRequest(writer http.ResponseWriter, req *http.Request) {
+	w.engine.ServeHTTP(writer, req)
+}
+
+func (w *GinWrapper) ListRoutes() []gin.RouteInfo {
+	return w.engine.Routes()
+}
+
+func defaultBuildRequestBindError(g *gin.Context, fieldtype string, err error) HTTPResponse {
+	return Error(err)
 }

ginext/funcWrapper.go

@@ -3,7 +3,7 @@ package ginext
 import (
 	"fmt"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 )
 
 type WHandlerFunc func(PreContext) HTTPResponse
@@ -14,7 +14,17 @@ func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
 
 		reqctx := g.Request.Context()
 
-		wrap, stackTrace, panicObj := callPanicSafe(fn, PreContext{wrapper: w, ginCtx: g})
+		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)
@@ -25,13 +35,24 @@ func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
 				Str("trace", stackTrace).
 				Build()
 
-			wrap = APIError(g, err)
+			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/jsonFilter.go

@@ -0,0 +1,9 @@
+package ginext
+
+import "github.com/gin-gonic/gin"
+
+var jsonFilterKey = "goext.jsonfilter"
+
+func SetJSONFilter(g *gin.Context, filter string) {
+	g.Set(jsonFilterKey, filter)
+}

ginext/preContext.go

@@ -1,20 +1,35 @@
 package ginext
 
 import (
+	"bytes"
 	"context"
+	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/gin-gonic/gin/binding"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/dataext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"io"
 	"runtime/debug"
+	"time"
 )
 
 type PreContext struct {
-	ginCtx  *gin.Context
-	wrapper *GinWrapper
-	uri     any
-	query   any
-	body    any
-	form    any
+	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
+	ignoreWrongContentType bool
+}
+
+type preContextData struct {
+	sessionObj SessionObject
 }
 
 func (pctx *PreContext) URI(uri any) *PreContext {
@@ -32,47 +47,153 @@ func (pctx *PreContext) Body(body any) *PreContext {
 	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) IgnoreWrongContentType() *PreContext {
+	pctx.ignoreWrongContentType = true
+	return pctx
+}
+
 func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 	if pctx.uri != nil {
 		if err := pctx.ginCtx.ShouldBindUri(pctx.uri); err != nil {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailURI, "Failed to read uri", err))
+			err = exerr.Wrap(err, "Failed to read uri").
+				WithType(exerr.TypeBindFailURI).
+				Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
+				Build()
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "URI", err))
 		}
 	}
 
 	if pctx.query != nil {
 		if err := pctx.ginCtx.ShouldBindQuery(pctx.query); err != nil {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailQuery, "Failed to read query", err))
+			err = exerr.Wrap(err, "Failed to read query").
+				WithType(exerr.TypeBindFailQuery).
+				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
+				Build()
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "QUERY", err))
 		}
 	}
 
 	if pctx.body != nil {
 		if pctx.ginCtx.ContentType() == "application/json" {
+			if brc, ok := pctx.body.(dataext.BufferedReadCloser); ok {
+				// Ensures a fully reset (offset=0) buffer before parsing
+				err := brc.Reset()
+				if err != nil {
+					err = exerr.Wrap(err, "Failed to read (brc.reset) json-body").
+						WithType(exerr.TypeBindFailJSON).
+						Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+						Build()
+					return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "JSON", err))
+				}
+			}
 			if err := pctx.ginCtx.ShouldBindJSON(pctx.body); err != nil {
-				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "Failed to read body", err))
+				err = exerr.Wrap(err, "Failed to read json-body").
+					WithType(exerr.TypeBindFailJSON).
+					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+					Build()
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "JSON", err))
 			}
 		} else {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "missing JSON body", nil))
+			if !pctx.ignoreWrongContentType {
+				err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
+					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
+					Build()
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "JSON", err))
+			}
+		}
+	}
+
+	if pctx.rawbody != nil {
+		if brc, ok := pctx.ginCtx.Request.Body.(dataext.BufferedReadCloser); ok {
+			v, err := brc.BufferedAll()
+			if err != nil {
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "BODY", err))
+			}
+			*pctx.rawbody = v
+		} else {
+			buf := &bytes.Buffer{}
+			_, err := io.Copy(buf, pctx.ginCtx.Request.Body)
+			if err != nil {
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "BODY", 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 {
-				return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailFormData, "Failed to read multipart-form", err))
+				err = exerr.Wrap(err, "Failed to read multipart-form").
+					WithType(exerr.TypeBindFailFormData).
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "FORM", 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 CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "FORM", err))
 			}
 		} else {
-			return nil, nil, langext.Ptr(APIError(pctx.ginCtx, commonApiErr.BindFailJSON, "missing form body", nil))
+			if !pctx.ignoreWrongContentType {
+				err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
+					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
+					Build()
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "FORM", err))
+			}
 		}
 	}
 
-	ictx, cancel := context.WithTimeout(context.Background(), pctx.wrapper.requestTimeout)
+	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 CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "HEADER", err))
+		}
+	}
+
+	ictx, cancel := context.WithTimeout(context.Background(), langext.Coalesce(pctx.timeout, pctx.wrapper.requestTimeout))
+
 	actx := CreateAppContext(pctx.ginCtx, ictx, cancel)
 
+	if pctx.persistantData.sessionObj != nil {
+		err := pctx.persistantData.sessionObj.Init(pctx.ginCtx, actx)
+		if err != nil {
+			actx.Cancel()
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "INIT", err))
+		}
+	}
+
 	return actx, pctx.ginCtx, nil
 }
 

ginext/response.go

@@ -1,118 +1,47 @@
 package ginext
 
 import (
-	"fmt"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 )
 
+type cookieval struct {
+	name     string
+	value    string
+	maxAge   int
+	path     string
+	domain   string
+	secure   bool
+	httpOnly bool
+}
+
+type headerval struct {
+	Key string
+	Val string
+}
+
 type HTTPResponse interface {
 	Write(g *gin.Context)
+	WithHeader(k string, v string) HTTPResponse
+	WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse
+	IsSuccess() bool
 }
 
-type jsonHTTPResponse struct {
-	statusCode int
-	data       any
+type InspectableHTTPResponse interface {
+	HTTPResponse
+
+	Statuscode() int
+	BodyString(g *gin.Context) *string
+	ContentType() string
+	Headers() []string
 }
 
-func (j jsonHTTPResponse) Write(g *gin.Context) {
-	g.Render(j.statusCode, json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true})
+type HTTPErrorResponse interface {
+	HTTPResponse
+
+	Error() error
 }
 
-type emptyHTTPResponse struct {
-	statusCode int
-}
-
-func (j emptyHTTPResponse) Write(g *gin.Context) {
-	g.Status(j.statusCode)
-}
-
-type textHTTPResponse struct {
-	statusCode int
-	data       string
-}
-
-func (j textHTTPResponse) Write(g *gin.Context) {
-	g.String(j.statusCode, "%s", j.data)
-}
-
-type dataHTTPResponse struct {
-	statusCode  int
-	data        []byte
-	contentType string
-}
-
-func (j dataHTTPResponse) Write(g *gin.Context) {
-	g.Data(j.statusCode, j.contentType, j.data)
-}
-
-type fileHTTPResponse struct {
-	mimetype string
-	filepath string
-	filename *string
-}
-
-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))
-
-	}
-	g.File(j.filepath)
-}
-
-type redirectHTTPResponse struct {
-	statusCode int
-	url        string
-}
-
-func (j redirectHTTPResponse) Write(g *gin.Context) {
-	g.Redirect(j.statusCode, j.url)
-}
-
-type jsonAPIErrResponse struct {
-	err *exerr.ExErr
-}
-
-func (j jsonAPIErrResponse) Write(g *gin.Context) {
-	j.err.Output(g)
-}
-
-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 Redirect(sc int, newURL string) HTTPResponse {
-	return &redirectHTTPResponse{statusCode: sc, url: newURL}
-}
-
-func APIError(g *gin.Context, e error) HTTPResponse {
-	return &jsonAPIErrResponse{
-		err: exerr.FromError(e),
-	}
-}
-
-func NotImplemented(g *gin.Context) HTTPResponse {
-	return APIError(g, exerr.New(exerr.TypeNotImplemented, "").Build())
+func NotImplemented() HTTPResponse {
+	return Error(exerr.New(exerr.TypeNotImplemented, "").Build())
 }

ginext/responseData.go

@@ -0,0 +1,58 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type dataHTTPResponse struct {
+	statusCode  int
+	data        []byte
+	contentType string
+	headers     []headerval
+	cookies     []cookieval
+}
+
+func (j dataHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func Data(sc int, contentType string, data []byte) HTTPResponse {
+	return &dataHTTPResponse{statusCode: sc, contentType: contentType, data: data}
+}

ginext/responseDownload.go

@@ -0,0 +1,64 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type downloadDataHTTPResponse struct {
+	statusCode int
+	mimetype   string
+	data       []byte
+	filename   *string
+	headers    []headerval
+	cookies    []cookieval
+}
+
+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)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func DownloadData(status int, mimetype string, filename string, data []byte) HTTPResponse {
+	return &downloadDataHTTPResponse{statusCode: status, mimetype: mimetype, data: data, filename: &filename}
+}

ginext/responseEmpty.go

@@ -0,0 +1,56 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type emptyHTTPResponse struct {
+	statusCode int
+	headers    []headerval
+	cookies    []cookieval
+}
+
+func (j emptyHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func Status(sc int) HTTPResponse {
+	return &emptyHTTPResponse{statusCode: sc}
+}

ginext/responseFile.go

@@ -0,0 +1,73 @@
+package ginext
+
+import (
+	"fmt"
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"os"
+)
+
+type fileHTTPResponse struct {
+	mimetype string
+	filepath string
+	filename *string
+	headers  []headerval
+	cookies  []cookieval
+}
+
+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)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+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}
+}

ginext/responseJson.go

@@ -0,0 +1,78 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	json "git.blackforestbytes.com/BlackForestBytes/goext/gojson"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type jsonHTTPResponse struct {
+	statusCode     int
+	data           any
+	headers        []headerval
+	cookies        []cookieval
+	filterOverride *string
+}
+
+func (j jsonHTTPResponse) jsonRenderer(g *gin.Context) json.GoJsonRender {
+	var f *string
+	if jsonfilter := g.GetString(jsonFilterKey); jsonfilter != "" {
+		f = &jsonfilter
+	}
+	if j.filterOverride != nil {
+		f = j.filterOverride
+	}
+	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)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func JSON(sc int, data any) HTTPResponse {
+	return &jsonHTTPResponse{statusCode: sc, data: data}
+}
+
+func JSONWithFilter(sc int, data any, f string) HTTPResponse {
+	return &jsonHTTPResponse{statusCode: sc, data: data, filterOverride: &f}
+}

ginext/responseJsonAPI.go

@@ -0,0 +1,81 @@
+package ginext
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type jsonAPIErrResponse struct {
+	err     *exerr.ExErr
+	headers []headerval
+	cookies []cookieval
+}
+
+func (j jsonAPIErrResponse) Error() error {
+	return j.err
+}
+
+func (j jsonAPIErrResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+
+	exerr.Get(j.err).Output(context.Background(), g)
+
+	j.err.CallListener(exerr.MethodOutput, exerr.ListenerOpt{NoLog: false})
+}
+
+func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j jsonAPIErrResponse) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 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()),
+	}
+}

ginext/responseRedirect.go

@@ -0,0 +1,57 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type redirectHTTPResponse struct {
+	statusCode int
+	url        string
+	headers    []headerval
+	cookies    []cookieval
+}
+
+func (j redirectHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func Redirect(sc int, newURL string) HTTPResponse {
+	return &redirectHTTPResponse{statusCode: sc, url: newURL}
+}

ginext/responseSeekable.go

@@ -0,0 +1,72 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"io"
+	"net/http"
+	"time"
+)
+
+type seekableResponse struct {
+	data        io.ReadSeeker
+	contentType string
+	filename    string
+	headers     []headerval
+	cookies     []cookieval
+}
+
+func (j seekableResponse) Write(g *gin.Context) {
+	g.Header("Content-Type", j.contentType) // if we don't set it here http.ServeContent does weird sniffing later...
+
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+
+	http.ServeContent(g.Writer, g.Request, j.filename, time.Unix(0, 0), j.data)
+
+	if clsr, ok := j.data.(io.ReadSeekCloser); ok {
+		err := clsr.Close()
+		if err != nil {
+			exerr.Wrap(err, "failed to close io.ReadSeerkClose in ginext.Seekable").Str("filename", j.filename).Print()
+		}
+	}
+}
+
+func (j seekableResponse) WithHeader(k string, v string) HTTPResponse {
+	j.headers = append(j.headers, headerval{k, v})
+	return j
+}
+
+func (j seekableResponse) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	return j
+}
+
+func (j seekableResponse) IsSuccess() bool {
+	return true
+}
+
+func (j seekableResponse) Statuscode() int {
+	return 200
+}
+
+func (j seekableResponse) BodyString(*gin.Context) *string {
+	return langext.Ptr("(seekable)")
+}
+
+func (j seekableResponse) ContentType() string {
+	return j.contentType
+}
+
+func (j seekableResponse) Headers() []string {
+	return langext.ArrMap(j.headers, func(v headerval) string { return v.Key + "=" + v.Val })
+}
+
+func Seekable(filename string, contentType string, data io.ReadSeeker) HTTPResponse {
+	return &seekableResponse{filename: filename, contentType: contentType, data: data}
+}

ginext/responseText.go

@@ -0,0 +1,57 @@
+package ginext
+
+import (
+	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+)
+
+type textHTTPResponse struct {
+	statusCode int
+	data       string
+	headers    []headerval
+	cookies    []cookieval
+}
+
+func (j textHTTPResponse) Write(g *gin.Context) {
+	for _, v := range j.headers {
+		g.Header(v.Key, v.Val)
+	}
+	for _, v := range j.cookies {
+		g.SetCookie(v.name, v.value, v.maxAge, v.path, v.domain, v.secure, v.httpOnly)
+	}
+	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) WithCookie(name string, value string, maxAge int, path string, domain string, secure bool, httpOnly bool) HTTPResponse {
+	j.cookies = append(j.cookies, cookieval{name, value, maxAge, path, domain, secure, httpOnly})
+	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 })
+}
+
+func Text(sc int, data string) HTTPResponse {
+	return &textHTTPResponse{statusCode: sc, data: data}
+}

ginext/routes.go

@@ -2,7 +2,12 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"net/http"
+	"path"
+	"reflect"
+	"runtime"
+	"strings"
 )
 
 var anyMethods = []string{
@@ -12,60 +17,93 @@ var anyMethods = []string{
 }
 
 type GinRoutesWrapper struct {
-	wrapper *GinWrapper
-	routes  gin.IRouter
+	wrapper        *GinWrapper
+	routes         gin.IRouter
+	absPath        string
+	defaultHandler []gin.HandlerFunc
 }
 
 type GinRouteBuilder struct {
 	routes *GinRoutesWrapper
 
-	methods  []string
+	method   string
 	relPath  string
+	absPath  string
 	handlers []gin.HandlerFunc
 }
 
 func (w *GinWrapper) Routes() *GinRoutesWrapper {
-	return &GinRoutesWrapper{wrapper: w, routes: w.engine}
+	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)}
+	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, absPath: w.absPath}
+}
+
+func (w *GinRoutesWrapper) WithJSONFilter(filter string) *GinRoutesWrapper {
+	return w.Use(func(g *gin.Context) { g.Set(jsonFilterKey, filter) })
 }
 
 func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodGet}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodGet, relativePath)
 }
 
 func (w *GinRoutesWrapper) POST(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodPost}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodPost, relativePath)
 }
 
 func (w *GinRoutesWrapper) DELETE(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodDelete}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodDelete, relativePath)
 }
 
 func (w *GinRoutesWrapper) PATCH(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodPatch}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodPatch, relativePath)
 }
 
 func (w *GinRoutesWrapper) PUT(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodPut}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodPut, relativePath)
 }
 
 func (w *GinRoutesWrapper) OPTIONS(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodOptions}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodOptions, relativePath)
 }
 
 func (w *GinRoutesWrapper) HEAD(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{http.MethodHead}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route(http.MethodHead, relativePath)
 }
 
 func (w *GinRoutesWrapper) COUNT(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: []string{"COUNT"}, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	return w._route("COUNT", relativePath)
 }
 
 func (w *GinRoutesWrapper) Any(relativePath string) *GinRouteBuilder {
-	return &GinRouteBuilder{routes: w, methods: anyMethods, relPath: relativePath, handlers: make([]gin.HandlerFunc, 0)}
+	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 {
@@ -73,13 +111,101 @@ func (w *GinRouteBuilder) Use(middleware ...gin.HandlerFunc) *GinRouteBuilder {
 	return w
 }
 
+func (w *GinRouteBuilder) WithJSONFilter(filter string) *GinRouteBuilder {
+	return w.Use(func(g *gin.Context) { g.Set(jsonFilterKey, filter) })
+}
+
 func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
-	w.handlers = append(w.handlers, Wrap(w.routes.wrapper, handler))
-	for _, m := range w.methods {
-		w.routes.routes.Handle(m, w.relPath, w.handlers...)
+
+	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) {
-	w.engine.NoRoute(Wrap(w, handler))
+
+	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 *AppContext) error
+	Finish(ctx context.Context, resp HTTPResponse) error
+}

go.mod

@@ -1,50 +1,66 @@
-module gogs.mikescher.com/BlackForestBytes/goext
+module git.blackforestbytes.com/BlackForestBytes/goext
 
-go 1.19
+go 1.23.0
+
+toolchain go1.24.0
 
 require (
-	github.com/gin-gonic/gin v1.9.1
-	github.com/jmoiron/sqlx v1.3.5
-	github.com/rs/xid v1.5.0
-	github.com/rs/zerolog v1.29.1
-	go.mongodb.org/mongo-driver v1.12.0
-	golang.org/x/crypto v0.11.0
-	golang.org/x/sys v0.10.0
-	golang.org/x/term v0.10.0
+	github.com/gin-gonic/gin v1.10.1
+	github.com/glebarez/go-sqlite v1.22.0 // only needed for tests -.-
+	github.com/jmoiron/sqlx v1.4.0
+	github.com/rs/xid v1.6.0
+	github.com/rs/zerolog v1.34.0
+	go.mongodb.org/mongo-driver v1.17.4
+	golang.org/x/crypto v0.39.0
+	golang.org/x/sys v0.33.0
+	golang.org/x/term v0.32.0
 )
 
 require (
-	github.com/bytedance/sonic v1.10.0-rc2 // indirect
-	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
-	github.com/chenzhuoyu/iasm v0.9.0 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
-	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/disintegration/imaging v1.6.2
+	github.com/jung-kurt/gofpdf v1.16.2
+	golang.org/x/sync v0.15.0
+)
+
+require (
+	github.com/bytedance/sonic v1.13.3 // indirect
+	github.com/bytedance/sonic/loader v0.2.4 // indirect
+	github.com/cloudwego/base64x v0.1.5 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.9 // indirect
+	github.com/gin-contrib/sse v1.1.0 // 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 v10.14.1 // indirect
-	github.com/goccy/go-json v0.10.2 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
+	github.com/go-playground/validator/v10 v10.26.0 // indirect
+	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/golang/snappy v1.0.0 // indirect
+	github.com/google/uuid v1.5.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/compress v1.16.7 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.5 // indirect
-	github.com/leodido/go-urn v1.2.4 // indirect
-	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-colorable v0.1.14 // 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 v2.0.9 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.2.11 // indirect
+	github.com/ugorji/go/codec v1.2.14 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // 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 v0.4.0 // indirect
-	golang.org/x/net v0.12.0 // indirect
-	golang.org/x/sync v0.3.0 // indirect
-	golang.org/x/text v0.11.0 // indirect
-	google.golang.org/protobuf v1.31.0 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	golang.org/x/arch v0.18.0 // indirect
+	golang.org/x/image v0.28.0 // indirect
+	golang.org/x/net v0.41.0 // indirect
+	golang.org/x/text v0.26.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	modernc.org/libc v1.37.6 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.7.2 // indirect
+	modernc.org/sqlite v1.28.0 // indirect
 )

go.sum

@@ -1,199 +1,405 @@
-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 v1.10.0-rc2 h1:oDfRZ+4m6AYCOC0GFeOCeYqvBmucy1isvouS2K0cPzo=
-github.com/bytedance/sonic v1.10.0-rc2/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 h1:9fhXjVzq5hUy2gkhhgHl95zG2cEAhw9OSGs8toWWAwo=
-github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
-github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
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goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.191"
+const GoextVersion = "0.0.579"
 
-const GoextVersionTimestamp = "2023-07-24T11:18:25+0200"
+const GoextVersionTimestamp = "2025-06-13T16:53:24+0200"

gojson/LICENSE

@@ -1,27 +0,0 @@
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

gojson/README.md

@@ -4,9 +4,12 @@ JSON serializer which serializes nil-Arrays as `[]` and nil-maps als `{}`.
 
 Idea from: https://github.com/homelight/json
 
-Forked from https://github.com/golang/go/tree/547e8e22fe565d65d1fd4d6e71436a5a855447b0/src/encoding/json ( tag go1.20.2 )
+Forked from https://github.com/golang/go/tree/194de8fbfaf4c3ed54e1a3c1b14fc67a830b8d95/src/encoding/json ( tag go1.23.4 )
+  -> https://github.com/golang/go/tree/go1.23.4/src/encoding/json
 
 Added:
 
  - `MarshalSafeCollections()` method
- - `Encoder.nilSafeSlices` and `Encoder.nilSafeMaps` fields
+ - `Encoder.nilSafeSlices` and `Encoder.nilSafeMaps` fields
+ - `Add 'tagkey' to use different key than json (set on Decoder struct)`
+ - `Add 'jsonfilter' to filter printed fields (set via MarshalSafeCollections)`

gojson/decode.go

@@ -17,14 +17,15 @@ import (
 	"unicode"
 	"unicode/utf16"
 	"unicode/utf8"
+	_ "unsafe" // for linkname
 )
 
 // Unmarshal parses the JSON-encoded data and stores the result
 // in the value pointed to by v. If v is nil or not a pointer,
-// Unmarshal returns an InvalidUnmarshalError.
+// Unmarshal returns an [InvalidUnmarshalError].
 //
 // Unmarshal uses the inverse of the encodings that
-// Marshal uses, allocating maps, slices, and pointers as necessary,
+// [Marshal] uses, allocating maps, slices, and pointers as necessary,
 // with the following additional rules:
 //
 // To unmarshal JSON into a pointer, Unmarshal first handles the case of
@@ -33,28 +34,28 @@ import (
 // the value pointed at by the pointer. If the pointer is nil, Unmarshal
 // allocates a new value for it to point to.
 //
-// To unmarshal JSON into a value implementing the Unmarshaler interface,
-// Unmarshal calls that value's UnmarshalJSON method, including
+// To unmarshal JSON into a value implementing [Unmarshaler],
+// Unmarshal calls that value's [Unmarshaler.UnmarshalJSON] method, including
 // when the input is a JSON null.
-// Otherwise, if the value implements encoding.TextUnmarshaler
-// and the input is a JSON quoted string, Unmarshal calls that value's
-// UnmarshalText method with the unquoted form of the string.
+// Otherwise, if the value implements [encoding.TextUnmarshaler]
+// and the input is a JSON quoted string, Unmarshal calls
+// [encoding.TextUnmarshaler.UnmarshalText] with the unquoted form of the string.
 //
 // To unmarshal JSON into a struct, Unmarshal matches incoming object
-// keys to the keys used by Marshal (either the struct field name or its tag),
+// keys to the keys used by [Marshal] (either the struct field name or its tag),
 // preferring an exact match but also accepting a case-insensitive match. By
 // default, object keys which don't have a corresponding struct field are
-// ignored (see Decoder.DisallowUnknownFields for an alternative).
+// ignored (see [Decoder.DisallowUnknownFields] for an alternative).
 //
 // To unmarshal JSON into an interface value,
 // Unmarshal stores one of these in the interface value:
 //
-//	bool, for JSON booleans
-//	float64, for JSON numbers
-//	string, for JSON strings
-//	[]interface{}, for JSON arrays
-//	map[string]interface{}, for JSON objects
-//	nil for JSON null
+//   - bool, for JSON booleans
+//   - float64, for JSON numbers
+//   - string, for JSON strings
+//   - []interface{}, for JSON arrays
+//   - map[string]interface{}, for JSON objects
+//   - nil for JSON null
 //
 // To unmarshal a JSON array into a slice, Unmarshal resets the slice length
 // to zero and then appends each element to the slice.
@@ -72,16 +73,15 @@ import (
 // use. If the map is nil, Unmarshal allocates a new map. Otherwise Unmarshal
 // reuses the existing map, keeping existing entries. Unmarshal then stores
 // key-value pairs from the JSON object into the map. The map's key type must
-// either be any string type, an integer, implement json.Unmarshaler, or
-// implement encoding.TextUnmarshaler.
+// either be any string type, an integer, or implement [encoding.TextUnmarshaler].
 //
-// If the JSON-encoded data contain a syntax error, Unmarshal returns a SyntaxError.
+// If the JSON-encoded data contain a syntax error, Unmarshal returns a [SyntaxError].
 //
 // If a JSON value is not appropriate for a given target type,
 // or if a JSON number overflows the target type, Unmarshal
 // skips that field and completes the unmarshaling as best it can.
 // If no more serious errors are encountered, Unmarshal returns
-// an UnmarshalTypeError describing the earliest such error. In any
+// an [UnmarshalTypeError] describing the earliest such error. In any
 // case, it's not guaranteed that all the remaining fields following
 // the problematic one will be unmarshaled into the target object.
 //
@@ -114,7 +114,7 @@ func Unmarshal(data []byte, v any) error {
 // a JSON value. UnmarshalJSON must copy the JSON data
 // if it wishes to retain the data after returning.
 //
-// By convention, to approximate the behavior of Unmarshal itself,
+// By convention, to approximate the behavior of [Unmarshal] itself,
 // Unmarshalers implement UnmarshalJSON([]byte("null")) as a no-op.
 type Unmarshaler interface {
 	UnmarshalJSON([]byte) error
@@ -151,8 +151,8 @@ func (e *UnmarshalFieldError) Error() string {
 	return "json: cannot unmarshal object key " + strconv.Quote(e.Key) + " into unexported field " + e.Field.Name + " of type " + e.Type.String()
 }
 
-// An InvalidUnmarshalError describes an invalid argument passed to Unmarshal.
-// (The argument to Unmarshal must be a non-nil pointer.)
+// An InvalidUnmarshalError describes an invalid argument passed to [Unmarshal].
+// (The argument to [Unmarshal] must be a non-nil pointer.)
 type InvalidUnmarshalError struct {
 	Type reflect.Type
 }
@@ -217,6 +217,7 @@ type decodeState struct {
 	savedError            error
 	useNumber             bool
 	disallowUnknownFields bool
+	tagkey                *string
 }
 
 // readIndex returns the position of the last byte read.
@@ -540,17 +541,10 @@ func (d *decodeState) array(v reflect.Value) error {
 			break
 		}
 
-		// Get element of array, growing if necessary.
+		// Expand slice length, growing the slice if necessary.
 		if v.Kind() == reflect.Slice {
-			// Grow slice if necessary
 			if i >= v.Cap() {
-				newcap := v.Cap() + v.Cap()/2
-				if newcap < 4 {
-					newcap = 4
-				}
-				newv := reflect.MakeSlice(v.Type(), v.Len(), newcap)
-				reflect.Copy(newv, v)
-				v.Set(newv)
+				v.Grow(1)
 			}
 			if i >= v.Len() {
 				v.SetLen(i + 1)
@@ -584,13 +578,11 @@ func (d *decodeState) array(v reflect.Value) error {
 
 	if i < v.Len() {
 		if v.Kind() == reflect.Array {
-			// Array. Zero the rest.
-			z := reflect.Zero(v.Type().Elem())
 			for ; i < v.Len(); i++ {
-				v.Index(i).Set(z)
+				v.Index(i).SetZero() // zero remainder of array
 			}
 		} else {
-			v.SetLen(i)
+			v.SetLen(i) // truncate the slice
 		}
 	}
 	if i == 0 && v.Kind() == reflect.Slice {
@@ -600,7 +592,7 @@ func (d *decodeState) array(v reflect.Value) error {
 }
 
 var nullLiteral = []byte("null")
-var textUnmarshalerType = reflect.TypeOf((*encoding.TextUnmarshaler)(nil)).Elem()
+var textUnmarshalerType = reflect.TypeFor[encoding.TextUnmarshaler]()
 
 // object consumes an object from d.data[d.off-1:], decoding into v.
 // The first byte ('{') of the object has been read already.
@@ -652,7 +644,11 @@ func (d *decodeState) object(v reflect.Value) error {
 			v.Set(reflect.MakeMap(t))
 		}
 	case reflect.Struct:
-		fields = cachedTypeFields(t)
+		tagkey := "json"
+		if d.tagkey != nil {
+			tagkey = *d.tagkey
+		}
+		fields = cachedTypeFields(t, tagkey)
 		// ok
 	default:
 		d.saveError(&UnmarshalTypeError{Value: "object", Type: t, Offset: int64(d.off)})
@@ -695,24 +691,13 @@ func (d *decodeState) object(v reflect.Value) error {
 			if !mapElem.IsValid() {
 				mapElem = reflect.New(elemType).Elem()
 			} else {
-				mapElem.Set(reflect.Zero(elemType))
+				mapElem.SetZero()
 			}
 			subv = mapElem
 		} else {
-			var f *field
-			if i, ok := fields.nameIndex[string(key)]; ok {
-				// Found an exact name match.
-				f = &fields.list[i]
-			} else {
-				// Fall back to the expensive case-insensitive
-				// linear search.
-				for i := range fields.list {
-					ff := &fields.list[i]
-					if ff.equalFold(ff.nameBytes, key) {
-						f = ff
-						break
-					}
-				}
+			f := fields.byExactName[string(key)]
+			if f == nil {
+				f = fields.byFoldedName[string(foldName(key))]
 			}
 			if f != nil {
 				subv = v
@@ -782,33 +767,35 @@ func (d *decodeState) object(v reflect.Value) error {
 		if v.Kind() == reflect.Map {
 			kt := t.Key()
 			var kv reflect.Value
-			switch {
-			case reflect.PointerTo(kt).Implements(textUnmarshalerType):
+			if reflect.PointerTo(kt).Implements(textUnmarshalerType) {
 				kv = reflect.New(kt)
 				if err := d.literalStore(item, kv, true); err != nil {
 					return err
 				}
 				kv = kv.Elem()
-			case kt.Kind() == reflect.String:
-				kv = reflect.ValueOf(key).Convert(kt)
-			default:
+			} else {
 				switch kt.Kind() {
+				case reflect.String:
+					kv = reflect.New(kt).Elem()
+					kv.SetString(string(key))
 				case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
 					s := string(key)
 					n, err := strconv.ParseInt(s, 10, 64)
-					if err != nil || reflect.Zero(kt).OverflowInt(n) {
+					if err != nil || kt.OverflowInt(n) {
 						d.saveError(&UnmarshalTypeError{Value: "number " + s, Type: kt, Offset: int64(start + 1)})
 						break
 					}
-					kv = reflect.ValueOf(n).Convert(kt)
+					kv = reflect.New(kt).Elem()
+					kv.SetInt(n)
 				case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
 					s := string(key)
 					n, err := strconv.ParseUint(s, 10, 64)
-					if err != nil || reflect.Zero(kt).OverflowUint(n) {
+					if err != nil || kt.OverflowUint(n) {
 						d.saveError(&UnmarshalTypeError{Value: "number " + s, Type: kt, Offset: int64(start + 1)})
 						break
 					}
-					kv = reflect.ValueOf(n).Convert(kt)
+					kv = reflect.New(kt).Elem()
+					kv.SetUint(n)
 				default:
 					panic("json: Unexpected key type") // should never occur
 				}
@@ -847,12 +834,12 @@ func (d *decodeState) convertNumber(s string) (any, error) {
 	}
 	f, err := strconv.ParseFloat(s, 64)
 	if err != nil {
-		return nil, &UnmarshalTypeError{Value: "number " + s, Type: reflect.TypeOf(0.0), Offset: int64(d.off)}
+		return nil, &UnmarshalTypeError{Value: "number " + s, Type: reflect.TypeFor[float64](), Offset: int64(d.off)}
 	}
 	return f, nil
 }
 
-var numberType = reflect.TypeOf(Number(""))
+var numberType = reflect.TypeFor[Number]()
 
 // literalStore decodes a literal stored in item into v.
 //
@@ -862,7 +849,7 @@ var numberType = reflect.TypeOf(Number(""))
 func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool) error {
 	// Check for unmarshaler.
 	if len(item) == 0 {
-		//Empty string given
+		// Empty string given.
 		d.saveError(fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into %v", item, v.Type()))
 		return nil
 	}
@@ -909,7 +896,7 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 		}
 		switch v.Kind() {
 		case reflect.Interface, reflect.Pointer, reflect.Map, reflect.Slice:
-			v.Set(reflect.Zero(v.Type()))
+			v.SetZero()
 			// otherwise, ignore null for primitives/string
 		}
 	case 't', 'f': // true, false
@@ -961,10 +948,11 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 			}
 			v.SetBytes(b[:n])
 		case reflect.String:
-			if v.Type() == numberType && !isValidNumber(string(s)) {
+			t := string(s)
+			if v.Type() == numberType && !isValidNumber(t) {
 				return fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", item)
 			}
-			v.SetString(string(s))
+			v.SetString(t)
 		case reflect.Interface:
 			if v.NumMethod() == 0 {
 				v.Set(reflect.ValueOf(string(s)))
@@ -980,13 +968,12 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 			}
 			panic(phasePanicMsg)
 		}
-		s := string(item)
 		switch v.Kind() {
 		default:
 			if v.Kind() == reflect.String && v.Type() == numberType {
 				// s must be a valid number, because it's
 				// already been tokenized.
-				v.SetString(s)
+				v.SetString(string(item))
 				break
 			}
 			if fromQuoted {
@@ -994,7 +981,7 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 			}
 			d.saveError(&UnmarshalTypeError{Value: "number", Type: v.Type(), Offset: int64(d.readIndex())})
 		case reflect.Interface:
-			n, err := d.convertNumber(s)
+			n, err := d.convertNumber(string(item))
 			if err != nil {
 				d.saveError(err)
 				break
@@ -1006,25 +993,25 @@ func (d *decodeState) literalStore(item []byte, v reflect.Value, fromQuoted bool
 			v.Set(reflect.ValueOf(n))
 
 		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-			n, err := strconv.ParseInt(s, 10, 64)
+			n, err := strconv.ParseInt(string(item), 10, 64)
 			if err != nil || v.OverflowInt(n) {
-				d.saveError(&UnmarshalTypeError{Value: "number " + s, Type: v.Type(), Offset: int64(d.readIndex())})
+				d.saveError(&UnmarshalTypeError{Value: "number " + string(item), Type: v.Type(), Offset: int64(d.readIndex())})
 				break
 			}
 			v.SetInt(n)
 
 		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-			n, err := strconv.ParseUint(s, 10, 64)
+			n, err := strconv.ParseUint(string(item), 10, 64)
 			if err != nil || v.OverflowUint(n) {
-				d.saveError(&UnmarshalTypeError{Value: "number " + s, Type: v.Type(), Offset: int64(d.readIndex())})
+				d.saveError(&UnmarshalTypeError{Value: "number " + string(item), Type: v.Type(), Offset: int64(d.readIndex())})
 				break
 			}
 			v.SetUint(n)
 
 		case reflect.Float32, reflect.Float64:
-			n, err := strconv.ParseFloat(s, v.Type().Bits())
+			n, err := strconv.ParseFloat(string(item), v.Type().Bits())
 			if err != nil || v.OverflowFloat(n) {
-				d.saveError(&UnmarshalTypeError{Value: "number " + s, Type: v.Type(), Offset: int64(d.readIndex())})
+				d.saveError(&UnmarshalTypeError{Value: "number " + string(item), Type: v.Type(), Offset: int64(d.readIndex())})
 				break
 			}
 			v.SetFloat(n)
@@ -1196,6 +1183,15 @@ func unquote(s []byte) (t string, ok bool) {
 	return
 }
 
+// unquoteBytes should be an internal detail,
+// but widely used packages access it using linkname.
+// Notable members of the hall of shame include:
+//   - github.com/bytedance/sonic
+//
+// Do not remove or change the type signature.
+// See go.dev/issue/67401.
+//
+//go:linkname unquoteBytes
 func unquoteBytes(s []byte) (t []byte, ok bool) {
 	if len(s) < 2 || s[0] != '"' || s[len(s)-1] != '"' {
 		return

gojson/fold.go

@@ -5,137 +5,44 @@
 package json
 
 import (
-	"bytes"
+	"unicode"
 	"unicode/utf8"
 )
 
-const (
-	caseMask     = ^byte(0x20) // Mask to ignore case in ASCII.
-	kelvin       = '\u212a'
-	smallLongEss = '\u017f'
-)
-
-// foldFunc returns one of four different case folding equivalence
-// functions, from most general (and slow) to fastest:
-//
-// 1) bytes.EqualFold, if the key s contains any non-ASCII UTF-8
-// 2) equalFoldRight, if s contains special folding ASCII ('k', 'K', 's', 'S')
-// 3) asciiEqualFold, no special, but includes non-letters (including _)
-// 4) simpleLetterEqualFold, no specials, no non-letters.
-//
-// The letters S and K are special because they map to 3 runes, not just 2:
-//   - S maps to s and to U+017F 'ſ' Latin small letter long s
-//   - k maps to K and to U+212A 'K' Kelvin sign
-//
-// See https://play.golang.org/p/tTxjOc0OGo
-//
-// The returned function is specialized for matching against s and
-// should only be given s. It's not curried for performance reasons.
-func foldFunc(s []byte) func(s, t []byte) bool {
-	nonLetter := false
-	special := false // special letter
-	for _, b := range s {
-		if b >= utf8.RuneSelf {
-			return bytes.EqualFold
-		}
-		upper := b & caseMask
-		if upper < 'A' || upper > 'Z' {
-			nonLetter = true
-		} else if upper == 'K' || upper == 'S' {
-			// See above for why these letters are special.
-			special = true
-		}
-	}
-	if special {
-		return equalFoldRight
-	}
-	if nonLetter {
-		return asciiEqualFold
-	}
-	return simpleLetterEqualFold
+// foldName returns a folded string such that foldName(x) == foldName(y)
+// is identical to bytes.EqualFold(x, y).
+func foldName(in []byte) []byte {
+	// This is inlinable to take advantage of "function outlining".
+	var arr [32]byte // large enough for most JSON names
+	return appendFoldedName(arr[:0], in)
 }
 
-// equalFoldRight is a specialization of bytes.EqualFold when s is
-// known to be all ASCII (including punctuation), but contains an 's',
-// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
-// See comments on foldFunc.
-func equalFoldRight(s, t []byte) bool {
-	for _, sb := range s {
-		if len(t) == 0 {
-			return false
-		}
-		tb := t[0]
-		if tb < utf8.RuneSelf {
-			if sb != tb {
-				sbUpper := sb & caseMask
-				if 'A' <= sbUpper && sbUpper <= 'Z' {
-					if sbUpper != tb&caseMask {
-						return false
-					}
-				} else {
-					return false
-				}
+func appendFoldedName(out, in []byte) []byte {
+	for i := 0; i < len(in); {
+		// Handle single-byte ASCII.
+		if c := in[i]; c < utf8.RuneSelf {
+			if 'a' <= c && c <= 'z' {
+				c -= 'a' - 'A'
 			}
-			t = t[1:]
+			out = append(out, c)
+			i++
 			continue
 		}
-		// sb is ASCII and t is not. t must be either kelvin
-		// sign or long s; sb must be s, S, k, or K.
-		tr, size := utf8.DecodeRune(t)
-		switch sb {
-		case 's', 'S':
-			if tr != smallLongEss {
-				return false
-			}
-		case 'k', 'K':
-			if tr != kelvin {
-				return false
-			}
-		default:
-			return false
-		}
-		t = t[size:]
-
+		// Handle multi-byte Unicode.
+		r, n := utf8.DecodeRune(in[i:])
+		out = utf8.AppendRune(out, foldRune(r))
+		i += n
 	}
-	return len(t) == 0
+	return out
 }
 
-// asciiEqualFold is a specialization of bytes.EqualFold for use when
-// s is all ASCII (but may contain non-letters) and contains no
-// special-folding letters.
-// See comments on foldFunc.
-func asciiEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, sb := range s {
-		tb := t[i]
-		if sb == tb {
-			continue
-		}
-		if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
-			if sb&caseMask != tb&caseMask {
-				return false
-			}
-		} else {
-			return false
+// foldRune is returns the smallest rune for all runes in the same fold set.
+func foldRune(r rune) rune {
+	for {
+		r2 := unicode.SimpleFold(r)
+		if r2 <= r {
+			return r2
 		}
+		r = r2
 	}
-	return true
-}
-
-// simpleLetterEqualFold is a specialization of bytes.EqualFold for
-// use when s is all ASCII letters (no underscores, etc) and also
-// doesn't contain 'k', 'K', 's', or 'S'.
-// See comments on foldFunc.
-func simpleLetterEqualFold(s, t []byte) bool {
-	if len(s) != len(t) {
-		return false
-	}
-	for i, b := range s {
-		if b&caseMask != t[i]&caseMask {
-			return false
-		}
-	}
-	return true
 }

gojson/fold_test.go

@@ -6,105 +6,45 @@ package json
 
 import (
 	"bytes"
-	"strings"
 	"testing"
-	"unicode/utf8"
 )
 
-var foldTests = []struct {
-	fn   func(s, t []byte) bool
-	s, t string
-	want bool
-}{
-	{equalFoldRight, "", "", true},
-	{equalFoldRight, "a", "a", true},
-	{equalFoldRight, "", "a", false},
-	{equalFoldRight, "a", "", false},
-	{equalFoldRight, "a", "A", true},
-	{equalFoldRight, "AB", "ab", true},
-	{equalFoldRight, "AB", "ac", false},
-	{equalFoldRight, "sbkKc", "ſbKKc", true},
-	{equalFoldRight, "SbKkc", "ſbKKc", true},
-	{equalFoldRight, "SbKkc", "ſbKK", false},
-	{equalFoldRight, "e", "é", false},
-	{equalFoldRight, "s", "S", true},
-
-	{simpleLetterEqualFold, "", "", true},
-	{simpleLetterEqualFold, "abc", "abc", true},
-	{simpleLetterEqualFold, "abc", "ABC", true},
-	{simpleLetterEqualFold, "abc", "ABCD", false},
-	{simpleLetterEqualFold, "abc", "xxx", false},
-
-	{asciiEqualFold, "a_B", "A_b", true},
-	{asciiEqualFold, "aa@", "aa`", false}, // verify 0x40 and 0x60 aren't case-equivalent
-}
-
-func TestFold(t *testing.T) {
-	for i, tt := range foldTests {
-		if got := tt.fn([]byte(tt.s), []byte(tt.t)); got != tt.want {
-			t.Errorf("%d. %q, %q = %v; want %v", i, tt.s, tt.t, got, tt.want)
+func FuzzEqualFold(f *testing.F) {
+	for _, ss := range [][2]string{
+		{"", ""},
+		{"123abc", "123ABC"},
+		{"αβδ", "ΑΒΔ"},
+		{"abc", "xyz"},
+		{"abc", "XYZ"},
+		{"1", "2"},
+		{"hello, world!", "hello, world!"},
+		{"hello, world!", "Hello, World!"},
+		{"hello, world!", "HELLO, WORLD!"},
+		{"hello, world!", "jello, world!"},
+		{"γειά, κόσμε!", "γειά, κόσμε!"},
+		{"γειά, κόσμε!", "Γειά, Κόσμε!"},
+		{"γειά, κόσμε!", "ΓΕΙΆ, ΚΌΣΜΕ!"},
+		{"γειά, κόσμε!", "ΛΕΙΆ, ΚΌΣΜΕ!"},
+		{"AESKey", "aesKey"},
+		{"AESKEY", "aes_key"},
+		{"aes_key", "AES_KEY"},
+		{"AES_KEY", "aes-key"},
+		{"aes-key", "AES-KEY"},
+		{"AES-KEY", "aesKey"},
+		{"aesKey", "AesKey"},
+		{"AesKey", "AESKey"},
+		{"AESKey", "aeskey"},
+		{"DESKey", "aeskey"},
+		{"AES Key", "aeskey"},
+	} {
+		f.Add([]byte(ss[0]), []byte(ss[1]))
+	}
+	equalFold := func(x, y []byte) bool { return string(foldName(x)) == string(foldName(y)) }
+	f.Fuzz(func(t *testing.T, x, y []byte) {
+		got := equalFold(x, y)
+		want := bytes.EqualFold(x, y)
+		if got != want {
+			t.Errorf("equalFold(%q, %q) = %v, want %v", x, y, got, want)
 		}
-		truth := strings.EqualFold(tt.s, tt.t)
-		if truth != tt.want {
-			t.Errorf("strings.EqualFold doesn't agree with case %d", i)
-		}
-	}
-}
-
-func TestFoldAgainstUnicode(t *testing.T) {
-	var buf1, buf2 []byte
-	var runes []rune
-	for i := 0x20; i <= 0x7f; i++ {
-		runes = append(runes, rune(i))
-	}
-	runes = append(runes, kelvin, smallLongEss)
-
-	funcs := []struct {
-		name   string
-		fold   func(s, t []byte) bool
-		letter bool // must be ASCII letter
-		simple bool // must be simple ASCII letter (not 'S' or 'K')
-	}{
-		{
-			name: "equalFoldRight",
-			fold: equalFoldRight,
-		},
-		{
-			name:   "asciiEqualFold",
-			fold:   asciiEqualFold,
-			simple: true,
-		},
-		{
-			name:   "simpleLetterEqualFold",
-			fold:   simpleLetterEqualFold,
-			simple: true,
-			letter: true,
-		},
-	}
-
-	for _, ff := range funcs {
-		for _, r := range runes {
-			if r >= utf8.RuneSelf {
-				continue
-			}
-			if ff.letter && !isASCIILetter(byte(r)) {
-				continue
-			}
-			if ff.simple && (r == 's' || r == 'S' || r == 'k' || r == 'K') {
-				continue
-			}
-			for _, r2 := range runes {
-				buf1 = append(utf8.AppendRune(append(buf1[:0], 'x'), r), 'x')
-				buf2 = append(utf8.AppendRune(append(buf2[:0], 'x'), r2), '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)
-				}
-			}
-		}
-	}
-}
-
-func isASCIILetter(b byte) bool {
-	return ('A' <= b && b <= 'Z') || ('a' <= b && b <= 'z')
+	})
 }

gojson/fuzz.go

@@ -1,42 +0,0 @@
-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build gofuzz
-
-package json
-
-import (
-	"fmt"
-)
-
-func Fuzz(data []byte) (score int) {
-	for _, ctor := range []func() any{
-		func() any { return new(any) },
-		func() any { return new(map[string]any) },
-		func() any { return new([]any) },
-	} {
-		v := ctor()
-		err := Unmarshal(data, v)
-		if err != nil {
-			continue
-		}
-		score = 1
-
-		m, err := Marshal(v)
-		if err != nil {
-			fmt.Printf("v=%#v\n", v)
-			panic(err)
-		}
-
-		u := ctor()
-		err = Unmarshal(m, u)
-		if err != nil {
-			fmt.Printf("v=%#v\n", v)
-			fmt.Printf("m=%s\n", m)
-			panic(err)
-		}
-	}
-
-	return
-}