v0.0.600

.idea/copilot.data.migration.agent.xml

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

.idea/copilot.data.migration.edit.xml

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

README.md

@@ -5,10 +5,10 @@ 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                                                                                                   |
 |-------------|------------|---------------------------------------------------------------------------------------------------------------|
@@ -20,8 +20,9 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 | 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                                                                          |
+| mongoext    | Mike       | Utility/Helper functions for mongodb (kinda abandoned)                                                        |
 | cursortoken | Mike       | MongoDB cursortoken implementation                                                                            |
 | pagination  | Mike       | Pagination implementation                                                                                     |
 |             |            |                                                                                                               |
@@ -42,4 +43,69 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 | 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)

bfcodegen/csid-generate.go

@@ -6,10 +6,10 @@ import (
 	"errors"
 	"fmt"
 	"go/format"
-	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"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"

bfcodegen/csid-generate.template

@@ -7,9 +7,9 @@ import "crypto/sha256"
 import "fmt"
 import "github.com/go-playground/validator/v10"
 import "github.com/rs/zerolog/log"
-import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
-import "gogs.mikescher.com/BlackForestBytes/goext/langext"
-import "gogs.mikescher.com/BlackForestBytes/goext/rext"
+import "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"
@@ -183,6 +183,10 @@ func (id {{.Name}}) CheckString() string {
 	return getCheckString(prefix{{.Name}}, string(id))
 }
 
+func (id {{.Name}}) IsZero() bool {
+	return id == ""
+}
+
 func (id {{.Name}}) Regex() rext.Regex {
 	return regex{{.Name}}
 }

bfcodegen/csid-generate_test.go

@@ -3,9 +3,9 @@ package bfcodegen
 import (
 	_ "embed"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"os"
 	"path/filepath"
 	"testing"

bfcodegen/enum-generate.go

@@ -6,11 +6,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cryptext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
 	"go/format"
-	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/rext"
 	"io"
 	"os"
 	"path"
@@ -46,7 +46,7 @@ var rexEnumPackage = rext.W(regexp.MustCompile(`^package\s+(?P<name>[A-Za-z0-9_]
 
 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 rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[A-Za-z0-9_:\s\-.]+"|[0-9]+))\s*(//(?P<comm>.*))?.*$`))
+var rexEnumValueDef = rext.W(regexp.MustCompile(`^\s*(?P<name>[A-Za-z0-9_]+)\s+(?P<type>[A-Za-z0-9_]+)\s*=\s*(?P<value>("[/@A-Za-z0-9_:\s\-.]*"|[0-9]+))\s*(//(?P<comm>.*))?.*$`))
 
 var rexEnumChecksumConst = rext.W(regexp.MustCompile(`const ChecksumEnumGenerator = "(?P<cs>[A-Za-z0-9_]*)"`))
 

bfcodegen/enum-generate.template

@@ -2,8 +2,8 @@
 
 package {{.PkgName}}
 
-import "gogs.mikescher.com/BlackForestBytes/goext/langext"
-import "gogs.mikescher.com/BlackForestBytes/goext/enums"
+import "git.blackforestbytes.com/BlackForestBytes/goext/langext"
+import "git.blackforestbytes.com/BlackForestBytes/goext/enums"
 
 const ChecksumEnumGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
 

bfcodegen/enum-generate_test.go

@@ -3,9 +3,9 @@ package bfcodegen
 import (
 	_ "embed"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"os"
 	"path/filepath"
 	"testing"

bfcodegen/id-generate.go

@@ -6,10 +6,10 @@ import (
 	"errors"
 	"fmt"
 	"go/format"
-	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/cryptext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"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"

bfcodegen/id-generate.template

@@ -5,7 +5,7 @@ package {{.PkgName}}
 import "go.mongodb.org/mongo-driver/bson"
 import "go.mongodb.org/mongo-driver/bson/bsontype"
 import "go.mongodb.org/mongo-driver/bson/primitive"
-import "gogs.mikescher.com/BlackForestBytes/goext/exerr"
+import "git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 
 const ChecksumIDGenerator = "{{.Checksum}}" // GoExtVersion: {{.GoextVersion}}
 
@@ -38,8 +38,17 @@ func (i {{.Name}}) Valid() bool {
 func (i {{.Name}}) AsAny() {{$.AnyDef.Name}} {
 	return {{$.AnyDef.Name}}(i)
 }
+
+func (i {{.Name}}) AsAnyPtr() *{{$.AnyDef.Name}} {
+    v := {{$.AnyDef.Name}}(i)
+	return &v
+}
 {{end}}
 
+func (i {{.Name}}) IsZero() bool {
+	return i == ""
+}
+
 func New{{.Name}}() {{.Name}} {
 	return {{.Name}}(primitive.NewObjectID().Hex())
 }

bfcodegen/id-generate_test.go

@@ -3,9 +3,9 @@ package bfcodegen
 import (
 	_ "embed"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/cmdext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/cmdext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"os"
 	"path/filepath"
 	"testing"

cmdext/builder.go

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

cmdext/cmdrunner.go

@@ -2,9 +2,9 @@ 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"
 )

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"
 )

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"

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

@@ -6,13 +6,15 @@ import (
 	"crypto/sha512"
 	"encoding/base64"
 	"encoding/hex"
+	"encoding/json"
 	"errors"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/totpext"
-	"golang.org/x/crypto/bcrypt"
 	"strconv"
 	"strings"
+
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/totpext"
+	"golang.org/x/crypto/bcrypt"
 )
 
 const LatestPassHashVersion = 5
@@ -317,6 +319,13 @@ func (ph PassHash) String() string {
 	return string(ph)
 }
 
+func (ph PassHash) MarshalJSON() ([]byte, error) {
+	if ph == "" {
+		return json.Marshal("")
+	}
+	return json.Marshal("*****")
+}
+
 func HashPassword(plainpass string, totpSecret []byte) (PassHash, error) {
 	return HashPasswordV5(plainpass, totpSecret)
 }

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"
 )
 

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/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/broadcaster.go

@@ -0,0 +1,230 @@
+package dataext
+
+import (
+	"context"
+	"iter"
+	"sync"
+	"time"
+
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/syncext"
+	"github.com/rs/xid"
+)
+
+// Broadcaster is a simple Broadcaster channel
+// This is a simpler interface over Broadcaster - which does not have distinct namespaces
+type Broadcaster[TData any] struct {
+	masterLock *sync.Mutex
+
+	subscriptions []*broadcastSubscription[TData]
+}
+
+type BroadcastSubscription interface {
+	Unsubscribe()
+}
+
+type broadcastSubscription[TData any] struct {
+	ID string
+
+	parent *Broadcaster[TData]
+
+	subLock *sync.Mutex
+
+	Func func(TData)
+	Chan chan TData
+
+	UnsubChan chan bool
+}
+
+func (p *broadcastSubscription[TData]) Unsubscribe() {
+	p.parent.unsubscribe(p)
+}
+
+func NewBroadcaster[TData any](capacity int) *Broadcaster[TData] {
+	return &Broadcaster[TData]{
+		masterLock:    &sync.Mutex{},
+		subscriptions: make([]*broadcastSubscription[TData], 0, capacity),
+	}
+}
+
+func (bb *Broadcaster[TData]) SubscriberCount() int {
+	bb.masterLock.Lock()
+	defer bb.masterLock.Unlock()
+
+	return len(bb.subscriptions)
+}
+
+// Publish sends `data` to all subscriber
+// But unbuffered - if one is currently not listening, we skip (the actualReceiver < subscriber)
+func (bb *Broadcaster[TData]) Publish(data TData) (subscriber int, actualReceiver int) {
+	bb.masterLock.Lock()
+	subs := langext.ArrCopy(bb.subscriptions)
+	bb.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		func() {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				msgSent := syncext.WriteNonBlocking(sub.Chan, data)
+				if msgSent {
+					actualReceiver++
+				}
+			}
+		}()
+	}
+
+	return subscriber, actualReceiver
+}
+
+// PublishWithContext sends `data` to all subscriber
+// buffered - if one is currently not listening, we wait (but error out when the context runs out)
+func (bb *Broadcaster[TData]) PublishWithContext(ctx context.Context, data TData) (subscriber int, actualReceiver int, err error) {
+	bb.masterLock.Lock()
+	subs := langext.ArrCopy(bb.subscriptions)
+	bb.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		err := func() error {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if err := ctx.Err(); err != nil {
+				return err
+			}
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				err := syncext.WriteChannelWithContext(ctx, sub.Chan, data)
+				if err != nil {
+					return err
+				}
+				actualReceiver++
+			}
+
+			return nil
+		}()
+		if err != nil {
+			return subscriber, actualReceiver, err
+		}
+	}
+
+	return subscriber, actualReceiver, nil
+}
+
+// PublishWithTimeout sends `data` to all subscriber
+// buffered - if one is currently not listening, we wait (but wait at most `timeout` - if the timeout is exceeded then actualReceiver < subscriber)
+func (bb *Broadcaster[TData]) PublishWithTimeout(data TData, timeout time.Duration) (subscriber int, actualReceiver int) {
+	bb.masterLock.Lock()
+	subs := langext.ArrCopy(bb.subscriptions)
+	bb.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		func() {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				ok := syncext.WriteChannelWithTimeout(sub.Chan, data, timeout)
+				if ok {
+					actualReceiver++
+				}
+			}
+		}()
+	}
+
+	return subscriber, actualReceiver
+}
+
+func (bb *Broadcaster[TData]) SubscribeByCallback(fn func(TData)) BroadcastSubscription {
+	bb.masterLock.Lock()
+	defer bb.masterLock.Unlock()
+
+	sub := &broadcastSubscription[TData]{ID: xid.New().String(), parent: bb, subLock: &sync.Mutex{}, Func: fn, UnsubChan: nil}
+
+	bb.subscriptions = append(bb.subscriptions, sub)
+
+	return sub
+}
+
+func (bb *Broadcaster[TData]) SubscribeByChan(chanBufferSize int) (chan TData, BroadcastSubscription) {
+	bb.masterLock.Lock()
+	defer bb.masterLock.Unlock()
+
+	msgCh := make(chan TData, chanBufferSize)
+
+	sub := &broadcastSubscription[TData]{ID: xid.New().String(), parent: bb, subLock: &sync.Mutex{}, Chan: msgCh, UnsubChan: nil}
+
+	bb.subscriptions = append(bb.subscriptions, sub)
+
+	return msgCh, sub
+}
+
+func (bb *Broadcaster[TData]) SubscribeByIter(chanBufferSize int) (iter.Seq[TData], BroadcastSubscription) {
+	bb.masterLock.Lock()
+	defer bb.masterLock.Unlock()
+
+	msgCh := make(chan TData, chanBufferSize)
+	unsubChan := make(chan bool, 8)
+
+	sub := &broadcastSubscription[TData]{ID: xid.New().String(), parent: bb, subLock: &sync.Mutex{}, Chan: msgCh, UnsubChan: unsubChan}
+
+	bb.subscriptions = append(bb.subscriptions, sub)
+
+	iterFun := func(yield func(TData) bool) {
+		for {
+			select {
+			case msg := <-msgCh:
+				if !yield(msg) {
+					sub.Unsubscribe()
+					return
+				}
+			case <-sub.UnsubChan:
+				sub.Unsubscribe()
+				return
+			}
+		}
+	}
+
+	return iterFun, sub
+}
+
+func (bb *Broadcaster[TData]) unsubscribe(p *broadcastSubscription[TData]) {
+	bb.masterLock.Lock()
+	defer bb.masterLock.Unlock()
+
+	p.subLock.Lock()
+	defer p.subLock.Unlock()
+
+	if p.Chan != nil {
+		close(p.Chan)
+		p.Chan = nil
+	}
+	if p.UnsubChan != nil {
+		syncext.WriteNonBlocking(p.UnsubChan, true)
+		close(p.UnsubChan)
+		p.UnsubChan = nil
+	}
+
+	bb.subscriptions = langext.ArrFilter(bb.subscriptions, func(v *broadcastSubscription[TData]) bool {
+		return v.ID != p.ID
+	})
+}

dataext/broadcaster_test.go

@@ -0,0 +1,332 @@
+package dataext
+
+import (
+	"context"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestNewBroadcast(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+	if bb == nil {
+		t.Fatal("NewBroadcaster returned nil")
+	}
+	if bb.masterLock == nil {
+		t.Fatal("masterLock is nil")
+	}
+	if bb.subscriptions == nil {
+		t.Fatal("subscriptions is nil")
+	}
+}
+
+func TestBroadcast_SubscribeByCallback(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	var received string
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	callback := func(msg string) {
+		received = msg
+		wg.Done()
+	}
+
+	sub := bb.SubscribeByCallback(callback)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers := bb.Publish("hello")
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Wait for the callback to be executed
+	wg.Wait()
+
+	if received != "hello" {
+		t.Fatalf("Expected to receive 'hello', got '%s'", received)
+	}
+}
+
+func TestBroadcast_SubscribeByChan(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	ch, sub := bb.SubscribeByChan(1)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers := bb.Publish("hello")
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Read from the channel with a timeout to avoid blocking
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+}
+
+func TestBroadcast_SubscribeByIter(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	iterSeq, sub := bb.SubscribeByIter(1)
+	defer sub.Unsubscribe()
+
+	// Channel to communicate when message is received
+	done := make(chan bool)
+	received := false
+
+	// Start a goroutine to use the iterator
+	go func() {
+		for msg := range iterSeq {
+			if msg == "hello" {
+				received = true
+				done <- true
+				return // Stop iteration
+			}
+		}
+	}()
+
+	// Give time for the iterator to start
+	time.Sleep(100 * time.Millisecond)
+
+	// Publish a message
+	bb.Publish("hello")
+
+	// Wait for the message to be received or timeout
+	select {
+	case <-done:
+		if !received {
+			t.Fatal("Message was received but not 'hello'")
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	subCount := bb.SubscriberCount()
+	if subCount != 0 {
+		t.Fatalf("Expected 0 receivers, got %d", subCount)
+	}
+}
+
+func TestBroadcast_Publish(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	// Test publishing with no subscribers
+	subs, receivers := bb.Publish("hello")
+	if subs != 0 {
+		t.Fatalf("Expected 0 subscribers, got %d", subs)
+	}
+	if receivers != 0 {
+		t.Fatalf("Expected 0 receivers, got %d", receivers)
+	}
+
+	// Add a subscriber
+	ch, sub := bb.SubscribeByChan(1)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers = bb.Publish("hello")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Test non-blocking behavior with a full channel
+	// First fill the channel
+	bb.Publish("fill")
+
+	// Now publish again - this should not block but may skip the receiver
+	subs, receivers = bb.Publish("overflow")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	_ = receivers // may be 0 if channel is full
+
+	// Drain the channel
+	<-ch
+}
+
+func TestBroadcast_PublishWithTimeout(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	// Add a subscriber with a channel
+	ch, sub := bb.SubscribeByChan(1)
+	defer sub.Unsubscribe()
+
+	// Publish with a timeout
+	subs, receivers := bb.PublishWithTimeout("hello", 100*time.Millisecond)
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Fill the channel
+	bb.Publish("fill")
+
+	// Test timeout behavior with a full channel
+	start := time.Now()
+	subs, receivers = bb.PublishWithTimeout("timeout-test", 50*time.Millisecond)
+	elapsed := time.Since(start)
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	// The receiver count should be 0 if the timeout occurred
+	if elapsed < 50*time.Millisecond {
+		t.Fatalf("Expected to wait at least 50ms, only waited %v", elapsed)
+	}
+
+	// Drain the channel
+	<-ch
+}
+
+func TestBroadcast_PublishWithContext(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	// Add a subscriber with a channel
+	ch, sub := bb.SubscribeByChan(1)
+	defer sub.Unsubscribe()
+
+	// Create a context
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	// Publish with context
+	subs, receivers, err := bb.PublishWithContext(ctx, "hello")
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Fill the channel
+	bb.Publish("fill")
+
+	// Test context cancellation with a full channel
+	ctx, cancel = context.WithCancel(context.Background())
+
+	// Cancel the context after a short delay
+	go func() {
+		time.Sleep(50 * time.Millisecond)
+		cancel()
+	}()
+
+	start := time.Now()
+	subs, receivers, err = bb.PublishWithContext(ctx, "context-test")
+	elapsed := time.Since(start)
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	// Should get a context canceled error
+	if err == nil {
+		t.Fatal("Expected context canceled error, got nil")
+	}
+
+	if elapsed < 50*time.Millisecond {
+		t.Fatalf("Expected to wait at least 50ms, only waited %v", elapsed)
+	}
+
+	// Drain the channel
+	<-ch
+}
+
+func TestBroadcast_Unsubscribe(t *testing.T) {
+	bb := NewBroadcaster[string](10)
+
+	// Add a subscriber
+	ch, sub := bb.SubscribeByChan(1)
+
+	// Publish a message
+	subs, receivers := bb.Publish("hello")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Unsubscribe
+	sub.Unsubscribe()
+
+	// Publish again
+	subs, receivers = bb.Publish("after-unsub")
+	if subs != 0 {
+		t.Fatalf("Expected 0 subscribers after unsubscribe, got %d", subs)
+	}
+	if receivers != 0 {
+		t.Fatalf("Expected 0 receivers after unsubscribe, got %d", receivers)
+	}
+
+	// Check that the subscriber count is 0
+	if bb.SubscriberCount() != 0 {
+		t.Fatalf("Expected SubscriberCount() == 0, got %d", bb.SubscriberCount())
+	}
+}

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/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

@@ -3,6 +3,7 @@ package dataext
 import (
 	"encoding/json"
 	"errors"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type JsonOpt[T any] struct {
@@ -10,6 +11,14 @@ type JsonOpt[T any] struct {
 	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 {
@@ -51,9 +60,24 @@ func (m JsonOpt[T]) ValueOrNil() *T {
 	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/pubsub.go

@@ -0,0 +1,241 @@
+package dataext
+
+import (
+	"context"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/syncext"
+	"github.com/rs/xid"
+	"iter"
+	"sync"
+	"time"
+)
+
+// PubSub is a simple Pub/Sub Broker
+// Clients can subscribe to a namespace and receive published messages on this namespace
+// Messages are broadcast to all subscribers
+type PubSub[TNamespace comparable, TData any] struct {
+	masterLock *sync.Mutex
+
+	subscriptions map[TNamespace][]*pubSubSubscription[TNamespace, TData]
+}
+
+type PubSubSubscription interface {
+	Unsubscribe()
+}
+
+type pubSubSubscription[TNamespace comparable, TData any] struct {
+	ID string
+
+	parent    *PubSub[TNamespace, TData]
+	namespace TNamespace
+
+	subLock *sync.Mutex
+
+	Func func(TData)
+	Chan chan TData
+
+	UnsubChan chan bool
+}
+
+func (p *pubSubSubscription[TNamespace, TData]) Unsubscribe() {
+	p.parent.unsubscribe(p)
+}
+
+func NewPubSub[TNamespace comparable, TData any](capacity int) *PubSub[TNamespace, TData] {
+	return &PubSub[TNamespace, TData]{
+		masterLock:    &sync.Mutex{},
+		subscriptions: make(map[TNamespace][]*pubSubSubscription[TNamespace, TData], capacity),
+	}
+}
+
+func (ps *PubSub[TNamespace, TData]) Namespaces() []TNamespace {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	return langext.MapKeyArr(ps.subscriptions)
+}
+
+func (ps *PubSub[TNamespace, TData]) SubscriberCount(ns TNamespace) int {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	return len(ps.subscriptions[ns])
+}
+
+// Publish sends `data` to all subscriber
+// But unbuffered - if one is currently not listening, we skip (the actualReceiver < subscriber)
+func (ps *PubSub[TNamespace, TData]) Publish(ns TNamespace, data TData) (subscriber int, actualReceiver int) {
+	ps.masterLock.Lock()
+	subs := langext.ArrCopy(ps.subscriptions[ns])
+	ps.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		func() {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				msgSent := syncext.WriteNonBlocking(sub.Chan, data)
+				if msgSent {
+					actualReceiver++
+				}
+			}
+		}()
+	}
+
+	return subscriber, actualReceiver
+}
+
+// PublishWithContext sends `data` to all subscriber
+// buffered - if one is currently not listening, we wait (but error out when the context runs out)
+func (ps *PubSub[TNamespace, TData]) PublishWithContext(ctx context.Context, ns TNamespace, data TData) (subscriber int, actualReceiver int, err error) {
+	ps.masterLock.Lock()
+	subs := langext.ArrCopy(ps.subscriptions[ns])
+	ps.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		err := func() error {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if err := ctx.Err(); err != nil {
+				return err
+			}
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				err := syncext.WriteChannelWithContext(ctx, sub.Chan, data)
+				if err != nil {
+					return err
+				}
+				actualReceiver++
+			}
+
+			return nil
+		}()
+		if err != nil {
+			return subscriber, actualReceiver, err
+		}
+	}
+
+	return subscriber, actualReceiver, nil
+}
+
+// PublishWithTimeout sends `data` to all subscriber
+// buffered - if one is currently not listening, we wait (but wait at most `timeout` - if the timeout is exceeded then actualReceiver < subscriber)
+func (ps *PubSub[TNamespace, TData]) PublishWithTimeout(ns TNamespace, data TData, timeout time.Duration) (subscriber int, actualReceiver int) {
+	ps.masterLock.Lock()
+	subs := langext.ArrCopy(ps.subscriptions[ns])
+	ps.masterLock.Unlock()
+
+	subscriber = len(subs)
+	actualReceiver = 0
+
+	for _, sub := range subs {
+		func() {
+			sub.subLock.Lock()
+			defer sub.subLock.Unlock()
+
+			if sub.Func != nil {
+				go func() { sub.Func(data) }()
+				actualReceiver++
+			} else if sub.Chan != nil {
+				ok := syncext.WriteChannelWithTimeout(sub.Chan, data, timeout)
+				if ok {
+					actualReceiver++
+				}
+			}
+		}()
+	}
+
+	return subscriber, actualReceiver
+}
+
+func (ps *PubSub[TNamespace, TData]) SubscribeByCallback(ns TNamespace, fn func(TData)) PubSubSubscription {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	sub := &pubSubSubscription[TNamespace, TData]{ID: xid.New().String(), namespace: ns, parent: ps, subLock: &sync.Mutex{}, Func: fn, UnsubChan: nil}
+
+	ps.subscriptions[ns] = append(ps.subscriptions[ns], sub)
+
+	return sub
+}
+
+func (ps *PubSub[TNamespace, TData]) SubscribeByChan(ns TNamespace, chanBufferSize int) (chan TData, PubSubSubscription) {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	msgCh := make(chan TData, chanBufferSize)
+
+	sub := &pubSubSubscription[TNamespace, TData]{ID: xid.New().String(), namespace: ns, parent: ps, subLock: &sync.Mutex{}, Chan: msgCh, UnsubChan: nil}
+
+	ps.subscriptions[ns] = append(ps.subscriptions[ns], sub)
+
+	return msgCh, sub
+}
+
+func (ps *PubSub[TNamespace, TData]) SubscribeByIter(ns TNamespace, chanBufferSize int) (iter.Seq[TData], PubSubSubscription) {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	msgCh := make(chan TData, chanBufferSize)
+	unsubChan := make(chan bool, 8)
+
+	sub := &pubSubSubscription[TNamespace, TData]{ID: xid.New().String(), namespace: ns, parent: ps, subLock: &sync.Mutex{}, Chan: msgCh, UnsubChan: unsubChan}
+
+	ps.subscriptions[ns] = append(ps.subscriptions[ns], sub)
+
+	iterFun := func(yield func(TData) bool) {
+		for {
+			select {
+			case msg := <-msgCh:
+				if !yield(msg) {
+					sub.Unsubscribe()
+					return
+				}
+			case <-sub.UnsubChan:
+				sub.Unsubscribe()
+				return
+			}
+		}
+	}
+
+	return iterFun, sub
+}
+
+func (ps *PubSub[TNamespace, TData]) unsubscribe(p *pubSubSubscription[TNamespace, TData]) {
+	ps.masterLock.Lock()
+	defer ps.masterLock.Unlock()
+
+	p.subLock.Lock()
+	defer p.subLock.Unlock()
+
+	if p.Chan != nil {
+		close(p.Chan)
+		p.Chan = nil
+	}
+	if p.UnsubChan != nil {
+		syncext.WriteNonBlocking(p.UnsubChan, true)
+		close(p.UnsubChan)
+		p.UnsubChan = nil
+	}
+
+	ps.subscriptions[p.namespace] = langext.ArrFilter(ps.subscriptions[p.namespace], func(v *pubSubSubscription[TNamespace, TData]) bool {
+		return v.ID != p.ID
+	})
+	if len(ps.subscriptions[p.namespace]) == 0 {
+		delete(ps.subscriptions, p.namespace)
+	}
+}

dataext/pubsub_test.go

@@ -0,0 +1,428 @@
+package dataext
+
+import (
+	"context"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestNewPubSub(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+	if ps == nil {
+		t.Fatal("NewPubSub returned nil")
+	}
+	if ps.masterLock == nil {
+		t.Fatal("masterLock is nil")
+	}
+	if ps.subscriptions == nil {
+		t.Fatal("subscriptions is nil")
+	}
+}
+
+func TestPubSub_Namespaces(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Initially no namespaces
+	namespaces := ps.Namespaces()
+	if len(namespaces) != 0 {
+		t.Fatalf("Expected 0 namespaces, got %d", len(namespaces))
+	}
+
+	// Add a subscription to create a namespace
+	_, sub1 := ps.SubscribeByChan("test-ns1", 1)
+	defer sub1.Unsubscribe()
+
+	// Add another subscription to a different namespace
+	_, sub2 := ps.SubscribeByChan("test-ns2", 1)
+	defer sub2.Unsubscribe()
+
+	// Check namespaces
+	namespaces = ps.Namespaces()
+	if len(namespaces) != 2 {
+		t.Fatalf("Expected 2 namespaces, got %d", len(namespaces))
+	}
+
+	// Check if namespaces contain the expected values
+	found1, found2 := false, false
+	for _, ns := range namespaces {
+		if ns == "test-ns1" {
+			found1 = true
+		}
+		if ns == "test-ns2" {
+			found2 = true
+		}
+	}
+
+	if !found1 || !found2 {
+		t.Fatalf("Expected to find both namespaces, found ns1: %v, ns2: %v", found1, found2)
+	}
+}
+
+func TestPubSub_SubscribeByCallback(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	var received string
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	callback := func(msg string) {
+		received = msg
+		wg.Done()
+	}
+
+	sub := ps.SubscribeByCallback("test-ns", callback)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers := ps.Publish("test-ns", "hello")
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Wait for the callback to be executed
+	wg.Wait()
+
+	if received != "hello" {
+		t.Fatalf("Expected to receive 'hello', got '%s'", received)
+	}
+}
+
+func TestPubSub_SubscribeByChan(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	ch, sub := ps.SubscribeByChan("test-ns", 1)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers := ps.Publish("test-ns", "hello")
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Read from the channel with a timeout to avoid blocking
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+}
+
+func TestPubSub_SubscribeByIter(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	iterSeq, sub := ps.SubscribeByIter("test-ns", 1)
+	defer sub.Unsubscribe()
+
+	// Channel to communicate when message is received
+	done := make(chan bool)
+	received := false
+
+	// Start a goroutine to use the iterator
+	go func() {
+		for msg := range iterSeq {
+			if msg == "hello" {
+				received = true
+				done <- true
+				return // Stop iteration
+			}
+		}
+	}()
+
+	// Give time for the iterator to start
+	time.Sleep(100 * time.Millisecond)
+
+	// Publish a message
+	ps.Publish("test-ns", "hello")
+
+	// Wait for the message to be received or timeout
+	select {
+	case <-done:
+		if !received {
+			t.Fatal("Message was received but not 'hello'")
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	subCount := ps.SubscriberCount("test-ns")
+	if subCount != 0 {
+		t.Fatalf("Expected 0 receivers, got %d", subCount)
+	}
+}
+
+func TestPubSub_Publish(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Test publishing to a namespace with no subscribers
+	subs, receivers := ps.Publish("empty-ns", "hello")
+	if subs != 0 {
+		t.Fatalf("Expected 0 subscribers, got %d", subs)
+	}
+	if receivers != 0 {
+		t.Fatalf("Expected 0 receivers, got %d", receivers)
+	}
+
+	// Add a subscriber
+	ch, sub := ps.SubscribeByChan("test-ns", 1)
+	defer sub.Unsubscribe()
+
+	// Publish a message
+	subs, receivers = ps.Publish("test-ns", "hello")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Test non-blocking behavior with a full channel
+	// First fill the channel
+	ps.Publish("test-ns", "fill")
+
+	// Now publish again - this should not block but skip the receiver
+	subs, receivers = ps.Publish("test-ns", "overflow")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	// The receiver count might be 0 if the channel is full
+
+	// Drain the channel
+	<-ch
+}
+
+func TestPubSub_PublishWithTimeout(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Add a subscriber with a channel
+	ch, sub := ps.SubscribeByChan("test-ns", 1)
+	defer sub.Unsubscribe()
+
+	// Publish with a timeout
+	subs, receivers := ps.PublishWithTimeout("test-ns", "hello", 100*time.Millisecond)
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Fill the channel
+	ps.Publish("test-ns", "fill")
+
+	// Test timeout behavior with a full channel
+	start := time.Now()
+	subs, receivers = ps.PublishWithTimeout("test-ns", "timeout-test", 50*time.Millisecond)
+	elapsed := time.Since(start)
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	// The receiver count should be 0 if the timeout occurred
+	if elapsed < 50*time.Millisecond {
+		t.Fatalf("Expected to wait at least 50ms, only waited %v", elapsed)
+	}
+
+	// Drain the channel
+	<-ch
+}
+
+func TestPubSub_PublishWithContext(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Add a subscriber with a channel
+	ch, sub := ps.SubscribeByChan("test-ns", 1)
+	defer sub.Unsubscribe()
+
+	// Create a context
+	ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
+	defer cancel()
+
+	// Publish with context
+	subs, receivers, err := ps.PublishWithContext(ctx, "test-ns", "hello")
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Fill the channel
+	ps.Publish("test-ns", "fill")
+
+	// Test context cancellation with a full channel
+	ctx, cancel = context.WithCancel(context.Background())
+
+	// Cancel the context after a short delay
+	go func() {
+		time.Sleep(50 * time.Millisecond)
+		cancel()
+	}()
+
+	start := time.Now()
+	subs, receivers, err = ps.PublishWithContext(ctx, "test-ns", "context-test")
+	elapsed := time.Since(start)
+
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+
+	// Should get a context canceled error
+	if err == nil {
+		t.Fatal("Expected context canceled error, got nil")
+	}
+
+	if elapsed < 50*time.Millisecond {
+		t.Fatalf("Expected to wait at least 50ms, only waited %v", elapsed)
+	}
+
+	// Drain the channel
+	<-ch
+}
+
+func TestPubSub_Unsubscribe(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Add a subscriber
+	ch, sub := ps.SubscribeByChan("test-ns", 1)
+
+	// Publish a message
+	subs, receivers := ps.Publish("test-ns", "hello")
+	if subs != 1 {
+		t.Fatalf("Expected 1 subscriber, got %d", subs)
+	}
+	if receivers != 1 {
+		t.Fatalf("Expected 1 receiver, got %d", receivers)
+	}
+
+	// Verify the message was received
+	select {
+	case msg := <-ch:
+		if msg != "hello" {
+			t.Fatalf("Expected to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message")
+	}
+
+	// Unsubscribe
+	sub.Unsubscribe()
+
+	// Publish again
+	subs, receivers = ps.Publish("test-ns", "after-unsub")
+	if subs != 0 {
+		t.Fatalf("Expected 0 subscribers after unsubscribe, got %d", subs)
+	}
+	if receivers != 0 {
+		t.Fatalf("Expected 0 receivers after unsubscribe, got %d", receivers)
+	}
+
+	// Check that the namespace is removed
+	namespaces := ps.Namespaces()
+	if len(namespaces) != 0 {
+		t.Fatalf("Expected 0 namespaces after unsubscribe, got %d", len(namespaces))
+	}
+}
+
+func TestPubSub_MultipleSubscribers(t *testing.T) {
+	ps := NewPubSub[string, string](10)
+
+	// Add multiple subscribers
+	ch1, sub1 := ps.SubscribeByChan("test-ns", 1)
+	defer sub1.Unsubscribe()
+
+	ch2, sub2 := ps.SubscribeByChan("test-ns", 1)
+	defer sub2.Unsubscribe()
+
+	var received string
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	sub3 := ps.SubscribeByCallback("test-ns", func(msg string) {
+		received = msg
+		wg.Done()
+	})
+	defer sub3.Unsubscribe()
+
+	// Publish a message
+	subs, receivers := ps.Publish("test-ns", "hello")
+	if subs != 3 {
+		t.Fatalf("Expected 3 subscribers, got %d", subs)
+	}
+	if receivers != 3 {
+		t.Fatalf("Expected 3 receivers, got %d", receivers)
+	}
+
+	// Verify the message was received by all subscribers
+	select {
+	case msg := <-ch1:
+		if msg != "hello" {
+			t.Fatalf("Expected ch1 to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message on ch1")
+	}
+
+	select {
+	case msg := <-ch2:
+		if msg != "hello" {
+			t.Fatalf("Expected ch2 to receive 'hello', got '%s'", msg)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("Timed out waiting for message on ch2")
+	}
+
+	// Wait for the callback
+	wg.Wait()
+
+	if received != "hello" {
+		t.Fatalf("Expected callback to receive 'hello', got '%s'", received)
+	}
+}

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

@@ -2,11 +2,18 @@ package dataext
 
 import "sync"
 
+// SyncMap is a thread-safe map implementation for generic key-value pairs.
+// All functions aresafe to be called in parallel.
 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{}}
+}
+
+// Set sets the value for the provided key
 func (s *SyncMap[TKey, TData]) Set(key TKey, data TData) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -18,6 +25,7 @@ func (s *SyncMap[TKey, TData]) Set(key TKey, data TData) {
 	s.data[key] = data
 }
 
+// SetIfNotContains sets the value for the provided key if it does not already exist
 func (s *SyncMap[TKey, TData]) SetIfNotContains(key TKey, data TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -35,6 +43,7 @@ func (s *SyncMap[TKey, TData]) SetIfNotContains(key TKey, data TData) bool {
 	return true
 }
 
+// SetIfNotContainsFunc sets the value for the provided key using the provided function
 func (s *SyncMap[TKey, TData]) SetIfNotContainsFunc(key TKey, data func() TData) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -52,6 +61,7 @@ func (s *SyncMap[TKey, TData]) SetIfNotContainsFunc(key TKey, data func() TData)
 	return true
 }
 
+// Get retrieves the value for the provided key
 func (s *SyncMap[TKey, TData]) Get(key TKey) (TData, bool) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -67,6 +77,8 @@ func (s *SyncMap[TKey, TData]) Get(key TKey) (TData, bool) {
 	}
 }
 
+// GetAndSetIfNotContains returns the existing value if the key exists.
+// Otherwise, it sets the provided value and returns it.
 func (s *SyncMap[TKey, TData]) GetAndSetIfNotContains(key TKey, data TData) TData {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -83,6 +95,8 @@ func (s *SyncMap[TKey, TData]) GetAndSetIfNotContains(key TKey, data TData) TDat
 	}
 }
 
+// GetAndSetIfNotContainsFunc returns the existing value if the key exists.
+// Otherwise, it calls the provided function to generate the value, sets it, and returns it.
 func (s *SyncMap[TKey, TData]) GetAndSetIfNotContainsFunc(key TKey, data func() TData) TData {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -100,6 +114,7 @@ func (s *SyncMap[TKey, TData]) GetAndSetIfNotContainsFunc(key TKey, data func()
 	}
 }
 
+// Delete removes the entry with the provided key and returns true if the key existed before.
 func (s *SyncMap[TKey, TData]) Delete(key TKey) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -115,6 +130,70 @@ func (s *SyncMap[TKey, TData]) Delete(key TKey) bool {
 	return ok
 }
 
+// DeleteIf deletes all entries that match the provided function and returns the number of removed entries.
+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
+}
+
+// UpdateIfExists updates the value if the key exists, otherwise it does nothing.
+func (s *SyncMap[TKey, TData]) UpdateIfExists(key TKey, fn func(data TData) 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 {
+		s.data[key] = fn(v)
+		return true
+	} else {
+		return false
+	}
+}
+
+// UpdateOrInsert updates the value if the key exists, otherwise it inserts the provided `insertValue`.
+func (s *SyncMap[TKey, TData]) UpdateOrInsert(key TKey, fn func(data TData) TData, insertValue 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 {
+		s.data[key] = fn(v)
+		return true
+	} else {
+		s.data[key] = insertValue
+		return false
+	}
+}
+
+// Clear removes all entries from the map.
+func (s *SyncMap[TKey, TData]) Clear() {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	s.data = make(map[TKey]TData)
+}
+
+// Contains checks if the map contains the provided key.
 func (s *SyncMap[TKey, TData]) Contains(key TKey) bool {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -128,6 +207,7 @@ func (s *SyncMap[TKey, TData]) Contains(key TKey) bool {
 	return ok
 }
 
+// GetAllKeys returns a copy (!) of all keys in the map.
 func (s *SyncMap[TKey, TData]) GetAllKeys() []TKey {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -145,6 +225,7 @@ func (s *SyncMap[TKey, TData]) GetAllKeys() []TKey {
 	return r
 }
 
+// GetAllValues returns a copy (!) of all values in the map.
 func (s *SyncMap[TKey, TData]) GetAllValues() []TData {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -161,3 +242,15 @@ func (s *SyncMap[TKey, TData]) GetAllValues() []TData {
 
 	return r
 }
+
+// Count returns the number of entries in the map.
+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

@@ -7,8 +7,12 @@ 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
+// 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()
@@ -19,9 +23,12 @@ func (s *SyncSet[TData]) Add(value TData) bool {
 	}
 
 	_, existsInPreState := s.data[value]
-	s.data[value] = true
+	if existsInPreState {
+		return false
+	}
 
-	return !existsInPreState
+	s.data[value] = true
+	return true
 }
 
 func (s *SyncSet[TData]) AddAll(values []TData) {
@@ -37,6 +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()
@@ -66,3 +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

@@ -19,6 +19,14 @@ 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 {
@@ -34,6 +42,14 @@ 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 {
@@ -50,6 +66,14 @@ 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 {
@@ -67,6 +91,14 @@ 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 {
@@ -86,6 +118,14 @@ func (t Quintuple[T1, T2, T3, T4, T5]) TupleValues() []any {
 
 }
 
+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 {
@@ -106,6 +146,14 @@ func (t Sextuple[T1, T2, T3, T4, T5, T6]) TupleValues() []any {
 
 }
 
+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 {
@@ -126,6 +174,14 @@ 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 {
@@ -147,6 +203,14 @@ 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 {
@@ -168,3 +232,10 @@ func (t Nonuple[T1, T2, T3, T4, T5, T6, T7, T8, T9]) TupleLength() int {
 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}
+}

exerr/builder.go

@@ -5,17 +5,18 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"github.com/gin-gonic/gin"
-	"github.com/rs/zerolog"
-	"go.mongodb.org/mongo-driver/bson/primitive"
-	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
-	"gogs.mikescher.com/BlackForestBytes/goext/enums"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"net/http"
 	"os"
 	"runtime/debug"
 	"strings"
 	"time"
+
+	"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"
 )
 
 //
@@ -30,6 +31,10 @@ 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(..)`
@@ -76,12 +81,14 @@ func Wrap(err error, msg string) *Builder {
 		return &Builder{errorData: newExErr(CatSystem, TypeInternal, msg)} // prevent NPE if we call Wrap with err==nil
 	}
 
+	v := FromError(err)
+
 	if !pkgconfig.RecursiveErrors {
-		v := FromError(err)
 		v.Message = msg
 		return &Builder{wrappedErr: err, errorData: v}
+	} else {
+		return &Builder{wrappedErr: err, errorData: wrapExErr(v, msg, CatWrap, 1)}
 	}
-	return &Builder{wrappedErr: err, errorData: wrapExErr(FromError(err), msg, CatWrap, 1)}
 }
 
 // ----------------------------------------------------------------------------
@@ -101,6 +108,16 @@ 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)
@@ -303,6 +320,7 @@ func (b *Builder) GinReq(ctx context.Context, g *gin.Context, req *http.Request)
 		}
 	}
 	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 {
@@ -368,29 +386,6 @@ func (b *Builder) CtxData(method Method, ctx context.Context) *Builder {
 	return b
 }
 
-func formatHeader(header map[string][]string) string {
-	ml := 1
-	for k, _ := range header {
-		if len(k) > ml {
-			ml = len(k)
-		}
-	}
-	r := ""
-	for k, v := range header {
-		if r != "" {
-			r += "\n"
-		}
-		for _, hval := range v {
-			value := hval
-			value = strings.ReplaceAll(value, "\n", "\\n")
-			value = strings.ReplaceAll(value, "\r", "\\r")
-			value = strings.ReplaceAll(value, "\t", "\\t")
-			r += langext.StrPadRight(k, " ", ml) + " := " + value
-		}
-	}
-	return r
-}
-
 func extractHeader(header map[string][]string) []string {
 	r := make([]string, 0, len(header))
 	for k, v := range header {
@@ -407,11 +402,25 @@ func extractHeader(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
 // 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()
 
 	for _, dctx := range ctxs {
@@ -419,16 +428,26 @@ func (b *Builder) Build(ctxs ...context.Context) error {
 	}
 
 	if pkgconfig.DisableErrorWrapping && b.wrappedErr != nil {
-		return b.wrappedErr
+		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())
-	}
+	if pkgconfig.ZeroLogErrTraces && !b.noLog {
+		if b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal {
+			b.errorData.ShortLog(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 if b.errorData.Severity == SevDebug {
+			b.errorData.ShortLog(pkgconfig.ZeroLogger.Debug())
+		} else if b.errorData.Severity == SevTrace {
+			b.errorData.ShortLog(pkgconfig.ZeroLogger.Trace())
+		} else {
+			b.errorData.ShortLog(pkgconfig.ZeroLogger.Error()) // ?!? unknown severity
+		}
 
-	b.errorData.CallListener(MethodBuild)
+	}
+	b.errorData.CallListener(MethodBuild, ListenerOpt{NoLog: b.noLog})
 
 	return b.errorData
 }
@@ -437,6 +456,8 @@ func (b *Builder) Build(ctxs ...context.Context) 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)
@@ -444,6 +465,21 @@ func (b *Builder) Output(ctx context.Context, g *gin.Context) {
 
 	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.doGinOutput(ctx, g)
+}
+
+// OutputRaw works teh same as Output() - but does not depend on gin and works with a raw http.ResponseWriter
+func (b *Builder) OutputRaw(w http.ResponseWriter) {
+	warnOnPkgConfigNotInitialized()
+
+	// 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.doRawOutput(w)
+}
+
+func (b *Builder) doGinOutput(ctx context.Context, g *gin.Context) {
 	b.errorData.Output(g)
 
 	if (b.errorData.Severity == SevErr || b.errorData.Severity == SevFatal) && (pkgconfig.ZeroLogErrGinOutput || pkgconfig.ZeroLogAllGinOutput) {
@@ -452,25 +488,53 @@ func (b *Builder) Output(ctx context.Context, g *gin.Context) {
 		b.errorData.Log(pkgconfig.ZeroLogger.Warn())
 	}
 
-	b.errorData.CallListener(MethodOutput)
+	b.errorData.CallListener(MethodOutput, ListenerOpt{NoLog: b.noLog})
+}
+
+func (b *Builder) doRawOutput(w http.ResponseWriter) {
+	b.errorData.OutputRaw(w)
+
+	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.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(ctxs ...context.Context) {
+func (b *Builder) Print(ctxs ...context.Context) Proxy {
 	warnOnPkgConfigNotInitialized()
 
 	for _, dctx := range ctxs {
 		b.CtxData(MethodPrint, 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
+	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 if b.errorData.Severity == SevDebug {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Debug())
+	} else if b.errorData.Severity == SevTrace {
+		b.errorData.ShortLog(pkgconfig.ZeroLogger.Trace())
+	} else {
+		b.errorData.Log(pkgconfig.ZeroLogger.Error()) // ?!? unknown severity
 	}
 
-	b.errorData.CallListener(MethodPrint)
+	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 {
@@ -487,13 +551,19 @@ func (b *Builder) Fatal(ctxs ...context.Context) {
 		b.CtxData(MethodFatal, dctx)
 	}
 
-	b.errorData.Log(pkgconfig.ZeroLogger.WithLevel(zerolog.FatalLevel))
+	// 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)
+	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(),
@@ -31,6 +98,7 @@ func FromError(err error) *ExErr {
 		Caller:         "",
 		OriginalError:  nil,
 		Meta:           getForeignMeta(err),
+		Extra:          make(map[string]any),
 	}
 }
 
@@ -48,6 +116,7 @@ func newExErr(cat ErrorCategory, errtype ErrorType, msg string) *ExErr {
 		Caller:         callername(2),
 		OriginalError:  nil,
 		Meta:           make(map[string]MetaValue),
+		Extra:          make(map[string]any),
 	}
 }
 
@@ -65,6 +134,7 @@ func wrapExErr(e *ExErr, msg string, cat ErrorCategory, stacktraceskip int) *ExE
 		Caller:         callername(1 + stacktraceskip),
 		OriginalError:  e,
 		Meta:           make(map[string]MetaValue),
+		Extra:          langext.CopyMap(langext.ForceMap(e.Extra)),
 	}
 }
 

exerr/dataType.go

@@ -8,8 +8,8 @@ import (
 	"go.mongodb.org/mongo-driver/bson/bsoncodec"
 	"go.mongodb.org/mongo-driver/bson/bsonrw"
 	"go.mongodb.org/mongo-driver/bson/bsontype"
-	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/dataext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"reflect"
 )
 
@@ -23,6 +23,7 @@ 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))

exerr/data_test.go

@@ -6,7 +6,7 @@ import (
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/bson/primitive"
 	"go.mongodb.org/mongo-driver/mongo"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"testing"
 	"time"
 )

exerr/errinit.go

@@ -3,9 +3,9 @@ package exerr
 import (
 	"context"
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"github.com/gin-gonic/gin"
 	"github.com/rs/zerolog"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"net/http"
 	"os"
 )
@@ -119,7 +119,7 @@ func newDefaultLogger() zerolog.Logger {
 
 	multi := zerolog.MultiLevelWriter(cw)
 
-	return zerolog.New(multi).With().Timestamp().CallerWithSkipFrameCount(4).Logger()
+	return zerolog.New(multi).With().Timestamp().CallerWithSkipFrameCount(5).Logger()
 }
 
 func Initialized() bool {

exerr/exerr.go

@@ -1,9 +1,10 @@
 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"
@@ -26,7 +27,8 @@ type ExErr struct {
 
 	OriginalError *ExErr `json:"originalError"`
 
-	Meta MetaMap `json:"meta"`
+	Extra map[string]any `json:"extra"`
+	Meta  MetaMap        `json:"meta"`
 }
 
 func (ee *ExErr) Error() string {
@@ -36,6 +38,13 @@ func (ee *ExErr) Error() string {
 // 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
@@ -81,6 +90,23 @@ func (ee *ExErr) Log(evt *zerolog.Event) {
 }
 
 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
@@ -101,6 +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 += "  "
@@ -122,12 +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 = "~"
 			}
 
@@ -171,7 +205,7 @@ func (ee *ExErr) ShortLog(evt *zerolog.Event) {
 }
 
 // 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 {
@@ -179,7 +213,7 @@ 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
 		}
 	}
@@ -328,6 +362,22 @@ func (ee *ExErr) GetMetaTime(key string) (time.Time, bool) {
 	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 {

exerr/exerr_test.go

@@ -2,8 +2,8 @@ package exerr
 
 import (
 	"errors"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/tst"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/tst"
 	"os"
 	"testing"
 )

exerr/gin.go

@@ -1,9 +1,9 @@
 package exerr
 
 import (
+	json "git.blackforestbytes.com/BlackForestBytes/goext/gojson"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"github.com/gin-gonic/gin"
-	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"net/http"
 	"time"
 )
@@ -48,6 +48,12 @@ func (ee *ExErr) toJson(depth int, applyExtendListener bool, outputMeta bool) la
 			metaJson[metaKey] = metaVal.rawValueForJson()
 		}
 		ginJson["meta"] = metaJson
+
+		extraJson := langext.H{}
+		for extraKey, extraVal := range ee.Extra {
+			extraJson[extraKey] = extraVal
+		}
+		ginJson["extra"] = extraJson
 	}
 
 	if applyExtendListener {
@@ -62,7 +68,6 @@ 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
 	}
@@ -90,6 +95,20 @@ func (ee *ExErr) ToAPIJson(applyExtendListener bool, includeWrappedErrors bool,
 		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)
 	}
@@ -123,3 +142,34 @@ func (ee *ExErr) Output(g *gin.Context) {
 
 	g.Render(statuscode, json.GoJsonRender{Data: ginOutput, NilSafeSlices: true, NilSafeMaps: true})
 }
+
+func (ee *ExErr) OutputRaw(w http.ResponseWriter) {
+
+	warnOnPkgConfigNotInitialized()
+
+	var statuscode = http.StatusInternalServerError
+
+	var baseCat = ee.RecursiveCategory()
+	var baseType = ee.RecursiveType()
+	var baseStatuscode = ee.RecursiveStatuscode()
+
+	if baseCat == CatUser {
+		statuscode = http.StatusBadRequest
+	} else if baseCat == CatSystem {
+		statuscode = http.StatusInternalServerError
+	}
+
+	if baseStatuscode != nil {
+		statuscode = *ee.StatusCode
+	} else if baseType.DefaultStatusCode != nil {
+		statuscode = *baseType.DefaultStatusCode
+	}
+
+	ginOutput, err := ee.ToDefaultAPIJson()
+	if err != nil {
+		panic(err) // cannot happen
+	}
+
+	w.WriteHeader(statuscode)
+	_, _ = w.Write([]byte(ginOutput))
+}

exerr/helper.go

@@ -86,3 +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

@@ -4,7 +4,11 @@ import (
 	"sync"
 )
 
-type Listener = func(method Method, v *ExErr)
+type ListenerOpt struct {
+	NoLog bool
+}
+
+type Listener = func(method Method, v *ExErr, opt ListenerOpt)
 
 var listenerLock = sync.Mutex{}
 var listener = make([]Listener, 0)
@@ -16,11 +20,11 @@ func RegisterListener(l Listener) {
 	listener = append(listener, l)
 }
 
-func (ee *ExErr) CallListener(m Method) {
+func (ee *ExErr) CallListener(m Method, opt ListenerOpt) {
 	listenerLock.Lock()
 	defer listenerLock.Unlock()
 
 	for _, v := range listener {
-		v(m, ee)
+		v(m, ee, opt)
 	}
 }

exerr/meta.go

@@ -5,10 +5,10 @@ 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"
@@ -720,6 +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

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

@@ -4,8 +4,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"github.com/rs/zerolog/log"
-	"gogs.mikescher.com/BlackForestBytes/goext/enums"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/enums"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"strings"
 )
 

ginext/appContext.go

@@ -25,6 +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()
 }

ginext/commonMiddlewares.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/dataext"
 )
 
 func BodyBuffer(g *gin.Context) {

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

@@ -4,9 +4,9 @@ import (
 	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/rs/zerolog/log"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/mathext"
-	"gogs.mikescher.com/BlackForestBytes/goext/rext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/mathext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/rext"
 	"net"
 	"net/http"
 	"net/http/httptest"
@@ -21,12 +21,16 @@ type GinWrapper struct {
 
 	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
 }
 
@@ -38,15 +42,18 @@ type ginRouteSpec struct {
 }
 
 type Options struct {
-	AllowCors                *bool                                     // Add cors handler to allow all CORS requests on the default http methods
-	GinDebug                 *bool                                     // Set gin.debug to true (adds more logs)
-	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
+	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
@@ -72,18 +79,21 @@ func NewEngine(opt Options) *GinWrapper {
 		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 wrapper.allowCors {
-		engine.Use(CorsMiddleware())
+		engine.Use(CorsMiddleware(wrapper.corsAllowHeader, wrapper.corsExposeHeader))
 	}
 
 	if ginDebug && !wrapper.suppressGinLogs {
@@ -222,3 +232,7 @@ func (w *GinWrapper) ForwardRequest(writer http.ResponseWriter, req *http.Reques
 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

@@ -2,8 +2,9 @@ package ginext
 
 import (
 	"fmt"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"net/http"
 )
 
 type WHandlerFunc func(PreContext) HTTPResponse
@@ -58,3 +59,31 @@ func Wrap(w *GinWrapper, fn WHandlerFunc) gin.HandlerFunc {
 		}
 	}
 }
+
+func WrapHTTPHandler(w *GinWrapper, fn http.Handler) gin.HandlerFunc {
+	return func(g *gin.Context) {
+		for _, lstr := range w.listenerBeforeRequest {
+			lstr(g)
+		}
+
+		fn.ServeHTTP(g.Writer, g.Request)
+
+		for _, lstr := range w.listenerAfterRequest {
+			lstr(g, nil)
+		}
+	}
+}
+
+func WrapHTTPHandlerFunc(w *GinWrapper, fn http.HandlerFunc) gin.HandlerFunc {
+	return func(g *gin.Context) {
+		for _, lstr := range w.listenerBeforeRequest {
+			lstr(g)
+		}
+
+		fn(g.Writer, g.Request)
+
+		for _, lstr := range w.listenerAfterRequest {
+			lstr(g, nil)
+		}
+	}
+}

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

@@ -6,25 +6,26 @@ import (
 	"fmt"
 	"github.com/gin-gonic/gin"
 	"github.com/gin-gonic/gin/binding"
-	"gogs.mikescher.com/BlackForestBytes/goext/dataext"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"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
-	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
+	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 {
@@ -71,6 +72,11 @@ func (pctx *PreContext) WithSession(sessionObj SessionObject) *PreContext {
 	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 {
@@ -78,7 +84,7 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 				WithType(exerr.TypeBindFailURI).
 				Str("struct_type", fmt.Sprintf("%T", pctx.uri)).
 				Build()
-			return nil, nil, langext.Ptr(Error(err))
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "URI", err))
 		}
 	}
 
@@ -88,24 +94,37 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 				WithType(exerr.TypeBindFailQuery).
 				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
 				Build()
-			return nil, nil, langext.Ptr(Error(err))
+			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 {
 				err = exerr.Wrap(err, "Failed to read json-body").
 					WithType(exerr.TypeBindFailJSON).
 					Str("struct_type", fmt.Sprintf("%T", pctx.body)).
 					Build()
-				return nil, nil, langext.Ptr(Error(err))
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "JSON", err))
 			}
 		} else {
-			err := exerr.New(exerr.TypeBindFailJSON, "missing JSON body").
-				Str("struct_type", fmt.Sprintf("%T", pctx.body)).
-				Build()
-			return nil, nil, langext.Ptr(Error(err))
+			if !pctx.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))
+			}
 		}
 	}
 
@@ -113,14 +132,14 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 		if brc, ok := pctx.ginCtx.Request.Body.(dataext.BufferedReadCloser); ok {
 			v, err := brc.BufferedAll()
 			if err != nil {
-				return nil, nil, langext.Ptr(Error(err))
+				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 nil, nil, langext.Ptr(Error(err))
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "BODY", err))
 			}
 			*pctx.rawbody = buf.Bytes()
 		}
@@ -133,7 +152,7 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 					WithType(exerr.TypeBindFailFormData).
 					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
 					Build()
-				return nil, nil, langext.Ptr(Error(err))
+				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 {
@@ -141,13 +160,15 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 					WithType(exerr.TypeBindFailFormData).
 					Str("struct_type", fmt.Sprintf("%T", pctx.form)).
 					Build()
-				return nil, nil, langext.Ptr(Error(err))
+				return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "FORM", err))
 			}
 		} else {
-			err := exerr.New(exerr.TypeBindFailFormData, "missing form body").
-				Str("struct_type", fmt.Sprintf("%T", pctx.form)).
-				Build()
-			return nil, nil, langext.Ptr(Error(err))
+			if !pctx.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))
+			}
 		}
 	}
 
@@ -157,7 +178,7 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 				WithType(exerr.TypeBindFailHeader).
 				Str("struct_type", fmt.Sprintf("%T", pctx.query)).
 				Build()
-			return nil, nil, langext.Ptr(Error(err))
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "HEADER", err))
 		}
 	}
 
@@ -169,7 +190,7 @@ func (pctx PreContext) Start() (*AppContext, *gin.Context, *HTTPResponse) {
 		err := pctx.persistantData.sessionObj.Init(pctx.ginCtx, actx)
 		if err != nil {
 			actx.Cancel()
-			return nil, nil, langext.Ptr(Error(exerr.Wrap(err, "Failed to init session").Build()))
+			return CreateBackgroundAppContext(), nil, langext.Ptr(pctx.wrapper.buildRequestBindError(pctx.ginCtx, "INIT", err))
 		}
 	}
 

ginext/response.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
 )
 
 type cookieval struct {
@@ -36,6 +36,12 @@ type InspectableHTTPResponse interface {
 	Headers() []string
 }
 
+type HTTPErrorResponse interface {
+	HTTPResponse
+
+	Error() error
+}
+
 func NotImplemented() HTTPResponse {
 	return Error(exerr.New(exerr.TypeNotImplemented, "").Build())
 }

ginext/responseData.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type dataHTTPResponse struct {

ginext/responseDownload.go

@@ -3,7 +3,7 @@ package ginext
 import (
 	"fmt"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type downloadDataHTTPResponse struct {

ginext/responseEmpty.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type emptyHTTPResponse struct {

ginext/responseFile.go

@@ -3,7 +3,7 @@ package ginext
 import (
 	"fmt"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"os"
 )
 

ginext/responseJson.go

@@ -2,22 +2,26 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	json "git.blackforestbytes.com/BlackForestBytes/goext/gojson"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type jsonHTTPResponse struct {
-	statusCode int
-	data       any
-	headers    []headerval
-	cookies    []cookieval
+	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("goext.jsonfilter"); jsonfilter != "" {
+	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}
 }
 
@@ -68,3 +72,7 @@ func (j jsonHTTPResponse) Headers() []string {
 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

@@ -3,8 +3,8 @@ package ginext
 import (
 	"context"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type jsonAPIErrResponse struct {
@@ -13,6 +13,10 @@ type jsonAPIErrResponse struct {
 	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)
@@ -23,7 +27,7 @@ func (j jsonAPIErrResponse) Write(g *gin.Context) {
 
 	exerr.Get(j.err).Output(context.Background(), g)
 
-	j.err.CallListener(exerr.MethodOutput)
+	j.err.CallListener(exerr.MethodOutput, exerr.ListenerOpt{NoLog: false})
 }
 
 func (j jsonAPIErrResponse) WithHeader(k string, v string) HTTPResponse {

ginext/responseRedirect.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type redirectHTTPResponse struct {

ginext/responseSeekable.go

@@ -2,8 +2,8 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"io"
 	"net/http"
 	"time"

ginext/responseText.go

@@ -2,7 +2,7 @@ package ginext
 
 import (
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 )
 
 type textHTTPResponse struct {

ginext/routes.go

@@ -1,8 +1,8 @@
 package ginext
 
 import (
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"github.com/gin-gonic/gin"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
 	"net/http"
 	"path"
 	"reflect"
@@ -57,7 +57,7 @@ func (w *GinRoutesWrapper) Use(middleware ...gin.HandlerFunc) *GinRoutesWrapper
 }
 
 func (w *GinRoutesWrapper) WithJSONFilter(filter string) *GinRoutesWrapper {
-	return w.Use(func(g *gin.Context) { g.Set("goext.jsonfilter", filter) })
+	return w.Use(func(g *gin.Context) { g.Set(jsonFilterKey, filter) })
 }
 
 func (w *GinRoutesWrapper) GET(relativePath string) *GinRouteBuilder {
@@ -112,7 +112,7 @@ func (w *GinRouteBuilder) Use(middleware ...gin.HandlerFunc) *GinRouteBuilder {
 }
 
 func (w *GinRouteBuilder) WithJSONFilter(filter string) *GinRouteBuilder {
-	return w.Use(func(g *gin.Context) { g.Set("goext.jsonfilter", filter) })
+	return w.Use(func(g *gin.Context) { g.Set(jsonFilterKey, filter) })
 }
 
 func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
@@ -148,6 +148,68 @@ func (w *GinRouteBuilder) Handle(handler WHandlerFunc) {
 	})
 }
 
+func (w *GinRouteBuilder) HandleRawHTTPHandler(f http.Handler) {
+	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) })
+
+	w.handlers = append(w.handlers, WrapHTTPHandler(w.routes.wrapper, f))
+
+	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:     "[HTTPHandler]",
+	})
+}
+
+func (w *GinRouteBuilder) HandleRawHTTPHandlerFunc(f http.HandlerFunc) {
+	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) })
+
+	w.handlers = append(w.handlers, WrapHTTPHandlerFunc(w.routes.wrapper, f))
+
+	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:     "[HTTPHandlerFunc]",
+	})
+}
+
 func (w *GinWrapper) NoRoute(handler WHandlerFunc) {
 
 	handlers := make([]gin.HandlerFunc, 0)

go.mod

@@ -1,63 +1,62 @@
-module gogs.mikescher.com/BlackForestBytes/goext
+module git.blackforestbytes.com/BlackForestBytes/goext
 
-go 1.22
+go 1.24.0
 
 require (
-	github.com/gin-gonic/gin v1.10.0
+	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 v1.5.0
-	github.com/rs/zerolog v1.33.0
-	go.mongodb.org/mongo-driver v1.16.0
-	golang.org/x/crypto v0.24.0
-	golang.org/x/sys v0.21.0
-	golang.org/x/term v0.21.0
+	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 v0.42.0
+	golang.org/x/sys v0.36.0
+	golang.org/x/term v0.35.0
 )
 
 require (
 	github.com/disintegration/imaging v1.6.2
 	github.com/jung-kurt/gofpdf v1.16.2
-	golang.org/x/sync v0.7.0
+	golang.org/x/net v0.44.0
+	golang.org/x/sync v0.17.0
 )
 
 require (
-	github.com/bytedance/sonic v1.11.9 // indirect
-	github.com/bytedance/sonic/loader v0.1.1 // indirect
-	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
-	github.com/chenzhuoyu/iasm v0.9.1 // indirect
-	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/bytedance/gopkg v0.1.3 // indirect
+	github.com/bytedance/sonic v1.14.1 // indirect
+	github.com/bytedance/sonic/loader v0.3.0 // indirect
+	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/cloudwego/iasm v0.2.0 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.4 // indirect
-	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.10 // 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 v10.22.0 // indirect
-	github.com/goccy/go-json v0.10.3 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
+	github.com/go-playground/validator/v10 v10.27.0 // 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 v1.17.9 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/mattn/go-colorable v0.1.13 // 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 v2.2.2 // 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 v1.2.12 // indirect
+	github.com/ugorji/go/codec v1.3.0 // 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 v0.0.0-20240424034433-3c2c7870ae76 // indirect
-	golang.org/x/arch v0.8.0 // indirect
-	golang.org/x/image v0.18.0 // indirect
-	golang.org/x/net v0.26.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	golang.org/x/arch v0.21.0 // indirect
+	golang.org/x/image v0.31.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+	google.golang.org/protobuf v1.36.9 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	modernc.org/libc v1.37.6 // indirect
 	modernc.org/mathutil v1.6.0 // indirect

go.sum

@@ -1,48 +1,53 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/boombuler/barcode v1.0.0/go.mod h1:paBWMcWSl3LHKBqUq+rly7CNSldXjb2rDl3JlRe0mD8=
-github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
-github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
-github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
-github.com/bytedance/sonic v1.10.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
-github.com/bytedance/sonic v1.11.0 h1:FwNNv6Vu4z2Onf1++LNzxB/QhitD8wuTdpZzMTGITWo=
-github.com/bytedance/sonic v1.11.0/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
-github.com/bytedance/sonic v1.11.1 h1:JC0+6c9FoWYYxakaoa+c5QTtJeiSZNeByOBhXtAFSn4=
-github.com/bytedance/sonic v1.11.1/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
-github.com/bytedance/sonic v1.11.2 h1:ywfwo0a/3j9HR8wsYGWsIWl2mvRsI950HyoxiBERw5A=
-github.com/bytedance/sonic v1.11.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
-github.com/bytedance/sonic v1.11.3 h1:jRN+yEjakWh8aK5FzrciUHG8OFXK+4/KrAX/ysEtHAA=
-github.com/bytedance/sonic v1.11.3/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
-github.com/bytedance/sonic v1.11.4 h1:8+OMLSSDDm2/qJc6ld5K5Sm62NK9VHcUKk0NzBoMAM4=
-github.com/bytedance/sonic v1.11.4/go.mod h1:YrWEqYtlBPS6LUA0vpuG79a1trsh4Ae41uWUWUreHhE=
-github.com/bytedance/sonic v1.11.5 h1:G00FYjjqll5iQ1PYXynbg/hyzqBqavH8Mo9/oTopd9k=
-github.com/bytedance/sonic v1.11.5/go.mod h1:X2PC2giUdj/Cv2lliWFLk6c/DUQok5rViJSemeB0wDw=
-github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
-github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
-github.com/bytedance/sonic v1.11.7 h1:k/l9p1hZpNIMJSk37wL9ltkcpqLfIho1vYthi4xT2t4=
-github.com/bytedance/sonic v1.11.7/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
-github.com/bytedance/sonic v1.11.8 h1:Zw/j1KfiS+OYTi9lyB3bb0CFxPJVkM17k1wyDG32LRA=
-github.com/bytedance/sonic v1.11.8/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
-github.com/bytedance/sonic v1.11.9 h1:LFHENlIY/SLzDWverzdOvgMztTxcfcF+cqNsz9pK5zg=
-github.com/bytedance/sonic v1.11.9/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
-github.com/bytedance/sonic/loader v0.1.0/go.mod h1:UmRT+IRTGKz/DAkzcEGzyVqQFJ7H9BqwBO3pm9H/+HY=
-github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
+github.com/bytedance/gopkg v0.1.3 h1:TPBSwH8RsouGCBcMBktLt1AymVo2TVsBVCY4b6TnZ/M=
+github.com/bytedance/gopkg v0.1.3/go.mod h1:576VvJ+eJgyCzdjS+c4+77QF3p7ubbtiKARP3TxducM=
+github.com/bytedance/sonic v1.12.3 h1:W2MGa7RCU1QTeYRTPE3+88mVC0yXmsRQRChiyVocVjU=
+github.com/bytedance/sonic v1.12.3/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKzMzT9r/rk=
+github.com/bytedance/sonic v1.12.4 h1:9Csb3c9ZJhfUWeMtpCDCq6BUoH5ogfDFLUgQ/jG+R0k=
+github.com/bytedance/sonic v1.12.4/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKzMzT9r/rk=
+github.com/bytedance/sonic v1.12.5 h1:hoZxY8uW+mT+OpkcUWw4k0fDINtOcVavEsGfzwzFU/w=
+github.com/bytedance/sonic v1.12.5/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKzMzT9r/rk=
+github.com/bytedance/sonic v1.12.6 h1:/isNmCUF2x3Sh8RAp/4mh4ZGkcFAX/hLrzrK3AvpRzk=
+github.com/bytedance/sonic v1.12.6/go.mod h1:B8Gt/XvtZ3Fqj+iSKMypzymZxw/FVwgIGKzMzT9r/rk=
+github.com/bytedance/sonic v1.12.7 h1:CQU8pxOy9HToxhndH0Kx/S1qU/CuS9GnKYrGioDcU1Q=
+github.com/bytedance/sonic v1.12.7/go.mod h1:tnbal4mxOMju17EGfknm2XyYcpyCnIROYOEYuemj13I=
+github.com/bytedance/sonic v1.12.8 h1:4xYRVRlXIgvSZ4e8iVTlMF5szgpXd4AfvuWgA8I8lgs=
+github.com/bytedance/sonic v1.12.8/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
+github.com/bytedance/sonic v1.12.9 h1:Od1BvK55NnewtGaJsTDeAOSnLVO2BTSLOe0+ooKokmQ=
+github.com/bytedance/sonic v1.12.9/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
+github.com/bytedance/sonic v1.12.10 h1:uVCQr6oS5669E9ZVW0HyksTLfNS7Q/9hV6IVS4nEMsI=
+github.com/bytedance/sonic v1.12.10/go.mod h1:uVvFidNmlt9+wa31S1urfwwthTWteBgG0hWuoKAXTx8=
+github.com/bytedance/sonic v1.13.1 h1:Jyd5CIvdFnkOWuKXr+wm4Nyk2h0yAFsr8ucJgEasO3g=
+github.com/bytedance/sonic v1.13.1/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
+github.com/bytedance/sonic v1.13.2 h1:8/H1FempDZqC4VqjptGo14QQlJx8VdZJegxs6wwfqpQ=
+github.com/bytedance/sonic v1.13.2/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
+github.com/bytedance/sonic v1.13.3 h1:MS8gmaH16Gtirygw7jV91pDCN33NyMrPbN7qiYhEsF0=
+github.com/bytedance/sonic v1.13.3/go.mod h1:o68xyaF9u2gvVBuGHPlUVCy+ZfmNNO5ETf1+KgkJhz4=
+github.com/bytedance/sonic v1.14.0 h1:/OfKt8HFw0kh2rj8N0F6C/qPGRESq0BbaNZgcNXXzQQ=
+github.com/bytedance/sonic v1.14.0/go.mod h1:WoEbx8WTcFJfzCe0hbmyTGrfjt8PzNEBdxlNUO24NhA=
+github.com/bytedance/sonic v1.14.1 h1:FBMC0zVz5XUmE4z9wF4Jey0An5FueFvOsTKKKtwIl7w=
+github.com/bytedance/sonic v1.14.1/go.mod h1:gi6uhQLMbTdeP0muCnrjHLeCUPyb70ujhnNlhOylAFc=
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
-github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
-github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
-github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0=
-github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA=
-github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
-github.com/chenzhuoyu/iasm v0.9.1 h1:tUHQJXo3NhBqw6s33wkGn9SP3bvrWLdlVIJ3hQBL7P0=
-github.com/chenzhuoyu/iasm v0.9.1/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
-github.com/cloudwego/base64x v0.1.0 h1:Tg5q9tq1khq9Y9UwfoC6zkHK0FypN2GLDvhqFceOL8U=
-github.com/cloudwego/base64x v0.1.0/go.mod h1:lM8nFiNbg74QgesNo6EAtv8N9tlRjBWExmHoNDa3PkU=
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@@ -295,61 +363,104 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
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+golang.org/x/text v0.26.0 h1:P42AVeLghgTYr4+xUnTRKDMqpar+PtX7KWuNQL21L8M=
+golang.org/x/text v0.26.0/go.mod h1:QK15LZJUUQVJxhz7wXgxSy/CJaTFjd0G+YLonydOVQA=
+golang.org/x/text v0.27.0 h1:4fGWRpyh641NLlecmyl4LOe6yDdfaYNrGb2zdfo4JV4=
+golang.org/x/text v0.27.0/go.mod h1:1D28KMCvyooCX9hBiosv5Tz/+YLxj0j7XhWjpSUF7CU=
+golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
+golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028 h1:+cNy6SZtPcJQH3LJVLOSmiC7MMxXNOb3PU/VUEz+EhU=
-golang.org/x/xerrors v0.0.0-20231012003039-104605ab7028/go.mod h1:NDW/Ps6MPRej6fsCIbMTohpP40sJ/P/vI1MoTEGwX90=
-google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
-google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
-google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
-google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
-google.golang.org/protobuf v1.34.0 h1:Qo/qEd2RZPCf2nKuorzksSknv0d3ERwp1vFG38gSmH4=
-google.golang.org/protobuf v1.34.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
-google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
-google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
 google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
+google.golang.org/protobuf v1.35.1 h1:m3LfL6/Ca+fqnjnlqQXNpFPABW1UD7mjh8KO2mKFytA=
+google.golang.org/protobuf v1.35.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.35.2 h1:8Ar7bF+apOIoThw1EdZl0p1oWvMqTHmpA2fRTyZO8io=
+google.golang.org/protobuf v1.35.2/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.1 h1:yBPeRvTftaleIgM3PZ/WBIZ7XM/eEYAaEyCwvyjq/gk=
+google.golang.org/protobuf v1.36.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.2 h1:R8FeyR1/eLmkutZOM5CWghmo5itiG9z0ktFlTVLuTmU=
+google.golang.org/protobuf v1.36.2/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.4 h1:6A3ZDJHn/eNqc1i+IdefRzy/9PokBTPvcqMySR7NNIM=
+google.golang.org/protobuf v1.36.4/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.5 h1:tPhr+woSbjfYvY6/GPufUoYizxw1cF/yFoxJ2fmpwlM=
+google.golang.org/protobuf v1.36.5/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+google.golang.org/protobuf v1.36.6 h1:z1NpPI8ku2WgiWnf+t9wTPsn6eP1L7ksHUlkfLvd9xY=
+google.golang.org/protobuf v1.36.6/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
+google.golang.org/protobuf v1.36.7 h1:IgrO7UwFQGJdRNXH/sQux4R1Dj1WAKcLElzeeRaXV2A=
+google.golang.org/protobuf v1.36.7/go.mod h1:jduwjTPXsFjZGTmRluh+L6NjiWu7pchiJ2/5YcXBHnY=
+google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
+google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
+google.golang.org/protobuf v1.36.9 h1:w2gp2mA27hUeUzj9Ex9FBjsBm40zfaDtEWow293U7Iw=
+google.golang.org/protobuf v1.36.9/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
@@ -364,4 +475,3 @@ modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=
 modernc.org/sqlite v1.28.0 h1:Zx+LyDDmXczNnEQdvPuEfcFVA2ZPyaD7UCZDjef3BHQ=
 modernc.org/sqlite v1.28.0/go.mod h1:Qxpazz0zH8Z1xCFyi5GSL3FzbtZ3fvbjmywNogldEW0=
 nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
-rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.481"
+const GoextVersion = "0.0.600"
 
-const GoextVersionTimestamp = "2024-07-04T16:24:49+0200"
+const GoextVersionTimestamp = "2025-09-13T18:45:23+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
 }
@@ -541,17 +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)
@@ -585,13 +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 {
@@ -601,7 +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.
@@ -700,24 +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
@@ -787,33 +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
 				}
@@ -852,12 +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.
 //
@@ -867,7 +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
 	}
@@ -914,7 +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
@@ -966,10 +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)))
@@ -985,13 +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 {
@@ -999,7 +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
@@ -1011,25 +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)
@@ -1201,6 +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/encode.go

@@ -12,45 +12,48 @@ package json
 
 import (
 	"bytes"
+	"cmp"
 	"encoding"
 	"encoding/base64"
 	"fmt"
 	"math"
 	"reflect"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
 	"unicode"
 	"unicode/utf8"
+	_ "unsafe" // for linkname
 )
 
 // Marshal returns the JSON encoding of v.
 //
 // Marshal traverses the value v recursively.
-// If an encountered value implements the Marshaler interface
-// and is not a nil pointer, Marshal calls its MarshalJSON method
-// to produce JSON. If no MarshalJSON method is present but the
-// value implements encoding.TextMarshaler instead, Marshal calls
-// its MarshalText method and encodes the result as a JSON string.
+// If an encountered value implements [Marshaler]
+// and is not a nil pointer, Marshal calls [Marshaler.MarshalJSON]
+// to produce JSON. If no [Marshaler.MarshalJSON] method is present but the
+// value implements [encoding.TextMarshaler] instead, Marshal calls
+// [encoding.TextMarshaler.MarshalText] and encodes the result as a JSON string.
 // The nil pointer exception is not strictly necessary
 // but mimics a similar, necessary exception in the behavior of
-// UnmarshalJSON.
+// [Unmarshaler.UnmarshalJSON].
 //
 // Otherwise, Marshal uses the following type-dependent default encodings:
 //
 // Boolean values encode as JSON booleans.
 //
-// Floating point, integer, and Number values encode as JSON numbers.
+// Floating point, integer, and [Number] values encode as JSON numbers.
+// NaN and +/-Inf values will return an [UnsupportedValueError].
 //
 // String values encode as JSON strings coerced to valid UTF-8,
 // replacing invalid bytes with the Unicode replacement rune.
 // So that the JSON will be safe to embed inside HTML <script> tags,
-// the string is encoded using HTMLEscape,
+// the string is encoded using [HTMLEscape],
 // which replaces "<", ">", "&", U+2028, and U+2029 are escaped
 // to "\u003c","\u003e", "\u0026", "\u2028", and "\u2029".
-// This replacement can be disabled when using an Encoder,
-// by calling SetEscapeHTML(false).
+// This replacement can be disabled when using an [Encoder],
+// by calling [Encoder.SetEscapeHTML](false).
 //
 // Array and slice values encode as JSON arrays, except that
 // []byte encodes as a base64-encoded string, and a nil slice
@@ -107,7 +110,7 @@ import (
 // only Unicode letters, digits, and ASCII punctuation except quotation
 // marks, backslash, and comma.
 //
-// Anonymous struct fields are usually marshaled as if their inner exported fields
+// Embedded struct fields are usually marshaled as if their inner exported fields
 // were fields in the outer struct, subject to the usual Go visibility rules amended
 // as described in the next paragraph.
 // An anonymous struct field with a name given in its JSON tag is treated as
@@ -134,11 +137,11 @@ import (
 // a JSON tag of "-".
 //
 // Map values encode as JSON objects. The map's key type must either be a
-// string, an integer type, or implement encoding.TextMarshaler. The map keys
+// string, an integer type, or implement [encoding.TextMarshaler]. The map keys
 // are sorted and used as JSON object keys by applying the following rules,
 // subject to the UTF-8 coercion described for string values above:
 //   - keys of any string type are used directly
-//   - encoding.TextMarshalers are marshaled
+//   - keys that implement [encoding.TextMarshaler] are marshaled
 //   - integer keys are converted to strings
 //
 // Pointer values encode as the value pointed to.
@@ -149,13 +152,14 @@ import (
 //
 // Channel, complex, and function values cannot be encoded in JSON.
 // Attempting to encode such a value causes Marshal to return
-// an UnsupportedTypeError.
+// an [UnsupportedTypeError].
 //
 // JSON cannot represent cyclic data structures and Marshal does not
 // handle them. Passing cyclic structures to Marshal will result in
 // an error.
 func Marshal(v any) ([]byte, error) {
 	e := newEncodeState()
+	defer encodeStatePool.Put(e)
 
 	err := e.marshal(v, encOpts{escapeHTML: true})
 	if err != nil {
@@ -163,8 +167,6 @@ func Marshal(v any) ([]byte, error) {
 	}
 	buf := append([]byte(nil), e.Bytes()...)
 
-	encodeStatePool.Put(e)
-
 	return buf, nil
 }
 
@@ -194,7 +196,7 @@ func MarshalSafeCollections(v interface{}, nilSafeSlices bool, nilSafeMaps bool,
 	}
 }
 
-// MarshalIndent is like Marshal but applies Indent to format the output.
+// MarshalIndent is like [Marshal] but applies [Indent] to format the output.
 // Each JSON element in the output will begin on a new line beginning with prefix
 // followed by one or more copies of indent according to the indentation nesting.
 func MarshalIndent(v any, prefix, indent string) ([]byte, error) {
@@ -202,47 +204,12 @@ func MarshalIndent(v any, prefix, indent string) ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
-	var buf bytes.Buffer
-	err = Indent(&buf, b, prefix, indent)
+	b2 := make([]byte, 0, indentGrowthFactor*len(b))
+	b2, err = appendIndent(b2, b, prefix, indent)
 	if err != nil {
 		return nil, err
 	}
-	return buf.Bytes(), nil
-}
-
-// HTMLEscape appends to dst the JSON-encoded src with <, >, &, U+2028 and U+2029
-// characters inside string literals changed to \u003c, \u003e, \u0026, \u2028, \u2029
-// so that the JSON will be safe to embed inside HTML <script> tags.
-// For historical reasons, web browsers don't honor standard HTML
-// escaping within <script> tags, so an alternative JSON encoding must
-// be used.
-func HTMLEscape(dst *bytes.Buffer, src []byte) {
-	// The characters can only appear in string literals,
-	// so just scan the string one byte at a time.
-	start := 0
-	for i, c := range src {
-		if c == '<' || c == '>' || c == '&' {
-			if start < i {
-				dst.Write(src[start:i])
-			}
-			dst.WriteString(`\u00`)
-			dst.WriteByte(hex[c>>4])
-			dst.WriteByte(hex[c&0xF])
-			start = i + 1
-		}
-		// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
-		if c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
-			if start < i {
-				dst.Write(src[start:i])
-			}
-			dst.WriteString(`\u202`)
-			dst.WriteByte(hex[src[i+2]&0xF])
-			start = i + 3
-		}
-	}
-	if start < len(src) {
-		dst.Write(src[start:])
-	}
+	return b2, nil
 }
 
 // Marshaler is the interface implemented by types that
@@ -251,7 +218,7 @@ type Marshaler interface {
 	MarshalJSON() ([]byte, error)
 }
 
-// An UnsupportedTypeError is returned by Marshal when attempting
+// An UnsupportedTypeError is returned by [Marshal] when attempting
 // to encode an unsupported value type.
 type UnsupportedTypeError struct {
 	Type reflect.Type
@@ -261,7 +228,7 @@ func (e *UnsupportedTypeError) Error() string {
 	return "json: unsupported type: " + e.Type.String()
 }
 
-// An UnsupportedValueError is returned by Marshal when attempting
+// An UnsupportedValueError is returned by [Marshal] when attempting
 // to encode an unsupported value.
 type UnsupportedValueError struct {
 	Value reflect.Value
@@ -272,9 +239,9 @@ func (e *UnsupportedValueError) Error() string {
 	return "json: unsupported value: " + e.Str
 }
 
-// Before Go 1.2, an InvalidUTF8Error was returned by Marshal when
+// Before Go 1.2, an InvalidUTF8Error was returned by [Marshal] when
 // attempting to encode a string value with invalid UTF-8 sequences.
-// As of Go 1.2, Marshal instead coerces the string to valid UTF-8 by
+// As of Go 1.2, [Marshal] instead coerces the string to valid UTF-8 by
 // replacing invalid bytes with the Unicode replacement rune U+FFFD.
 //
 // Deprecated: No longer used; kept for compatibility.
@@ -286,7 +253,8 @@ func (e *InvalidUTF8Error) Error() string {
 	return "json: invalid UTF-8 in string: " + strconv.Quote(e.S)
 }
 
-// A MarshalerError represents an error from calling a MarshalJSON or MarshalText method.
+// A MarshalerError represents an error from calling a
+// [Marshaler.MarshalJSON] or [encoding.TextMarshaler.MarshalText] method.
 type MarshalerError struct {
 	Type       reflect.Type
 	Err        error
@@ -306,12 +274,11 @@ func (e *MarshalerError) Error() string {
 // Unwrap returns the underlying error.
 func (e *MarshalerError) Unwrap() error { return e.Err }
 
-var hex = "0123456789abcdef"
+const hex = "0123456789abcdef"
 
 // An encodeState encodes JSON into a bytes.Buffer.
 type encodeState struct {
 	bytes.Buffer // accumulated output
-	scratch      [64]byte
 
 	// Keep track of what pointers we've seen in the current recursive call
 	// path, to avoid cycles that could lead to a stack overflow. Only do
@@ -367,16 +334,12 @@ func isEmptyValue(v reflect.Value) bool {
 	switch v.Kind() {
 	case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
 		return v.Len() == 0
-	case reflect.Bool:
-		return !v.Bool()
-	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		return v.Int() == 0
-	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-		return v.Uint() == 0
-	case reflect.Float32, reflect.Float64:
-		return v.Float() == 0
-	case reflect.Interface, reflect.Pointer:
-		return v.IsNil()
+	case reflect.Bool,
+		reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+		reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr,
+		reflect.Float32, reflect.Float64,
+		reflect.Interface, reflect.Pointer:
+		return v.IsZero()
 	}
 	return false
 }
@@ -386,7 +349,6 @@ func (e *encodeState) reflectValue(v reflect.Value, opts encOpts) {
 	if opts.tagkey != nil {
 		tagkey = *opts.tagkey
 	}
-
 	valueEncoder(v, tagkey)(e, v, opts)
 }
 
@@ -418,7 +380,7 @@ func valueEncoder(v reflect.Value, tagkey string) encoderFunc {
 }
 
 func typeEncoder(t reflect.Type, tagkey string) encoderFunc {
-	if fi, ok := encoderCache.Load(t); ok {
+	if fi, ok := encoderCache.Load(TagKeyTypeKey{t, tagkey}); ok {
 		return fi.(encoderFunc)
 	}
 
@@ -431,7 +393,7 @@ func typeEncoder(t reflect.Type, tagkey string) encoderFunc {
 		f  encoderFunc
 	)
 	wg.Add(1)
-	fi, loaded := encoderCache.LoadOrStore(t, encoderFunc(func(e *encodeState, v reflect.Value, opts encOpts) {
+	fi, loaded := encoderCache.LoadOrStore(TagKeyTypeKey{t, tagkey}, encoderFunc(func(e *encodeState, v reflect.Value, opts encOpts) {
 		wg.Wait()
 		f(e, v, opts)
 	}))
@@ -442,13 +404,13 @@ func typeEncoder(t reflect.Type, tagkey string) encoderFunc {
 	// Compute the real encoder and replace the indirect func with it.
 	f = newTypeEncoder(t, true, tagkey)
 	wg.Done()
-	encoderCache.Store(t, f)
+	encoderCache.Store(TagKeyTypeKey{t, tagkey}, f)
 	return f
 }
 
 var (
-	marshalerType     = reflect.TypeOf((*Marshaler)(nil)).Elem()
-	textMarshalerType = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()
+	marshalerType     = reflect.TypeFor[Marshaler]()
+	textMarshalerType = reflect.TypeFor[encoding.TextMarshaler]()
 )
 
 // newTypeEncoder constructs an encoderFunc for a type.
@@ -517,8 +479,10 @@ func marshalerEncoder(e *encodeState, v reflect.Value, opts encOpts) {
 	}
 	b, err := m.MarshalJSON()
 	if err == nil {
-		// copy JSON into buffer, checking validity.
-		err = compact(&e.Buffer, b, opts.escapeHTML)
+		e.Grow(len(b))
+		out := e.AvailableBuffer()
+		out, err = appendCompact(out, b, opts.escapeHTML)
+		e.Buffer.Write(out)
 	}
 	if err != nil {
 		e.error(&MarshalerError{v.Type(), err, "MarshalJSON"})
@@ -534,8 +498,10 @@ func addrMarshalerEncoder(e *encodeState, v reflect.Value, opts encOpts) {
 	m := va.Interface().(Marshaler)
 	b, err := m.MarshalJSON()
 	if err == nil {
-		// copy JSON into buffer, checking validity.
-		err = compact(&e.Buffer, b, opts.escapeHTML)
+		e.Grow(len(b))
+		out := e.AvailableBuffer()
+		out, err = appendCompact(out, b, opts.escapeHTML)
+		e.Buffer.Write(out)
 	}
 	if err != nil {
 		e.error(&MarshalerError{v.Type(), err, "MarshalJSON"})
@@ -556,7 +522,7 @@ func textMarshalerEncoder(e *encodeState, v reflect.Value, opts encOpts) {
 	if err != nil {
 		e.error(&MarshalerError{v.Type(), err, "MarshalText"})
 	}
-	e.stringBytes(b, opts.escapeHTML)
+	e.Write(appendString(e.AvailableBuffer(), b, opts.escapeHTML))
 }
 
 func addrTextMarshalerEncoder(e *encodeState, v reflect.Value, opts encOpts) {
@@ -570,43 +536,31 @@ func addrTextMarshalerEncoder(e *encodeState, v reflect.Value, opts encOpts) {
 	if err != nil {
 		e.error(&MarshalerError{v.Type(), err, "MarshalText"})
 	}
-	e.stringBytes(b, opts.escapeHTML)
+	e.Write(appendString(e.AvailableBuffer(), b, opts.escapeHTML))
 }
 
 func boolEncoder(e *encodeState, v reflect.Value, opts encOpts) {
-	if opts.quoted {
-		e.WriteByte('"')
-	}
-	if v.Bool() {
-		e.WriteString("true")
-	} else {
-		e.WriteString("false")
-	}
-	if opts.quoted {
-		e.WriteByte('"')
-	}
+	b := e.AvailableBuffer()
+	b = mayAppendQuote(b, opts.quoted)
+	b = strconv.AppendBool(b, v.Bool())
+	b = mayAppendQuote(b, opts.quoted)
+	e.Write(b)
 }
 
 func intEncoder(e *encodeState, v reflect.Value, opts encOpts) {
-	b := strconv.AppendInt(e.scratch[:0], v.Int(), 10)
-	if opts.quoted {
-		e.WriteByte('"')
-	}
+	b := e.AvailableBuffer()
+	b = mayAppendQuote(b, opts.quoted)
+	b = strconv.AppendInt(b, v.Int(), 10)
+	b = mayAppendQuote(b, opts.quoted)
 	e.Write(b)
-	if opts.quoted {
-		e.WriteByte('"')
-	}
 }
 
 func uintEncoder(e *encodeState, v reflect.Value, opts encOpts) {
-	b := strconv.AppendUint(e.scratch[:0], v.Uint(), 10)
-	if opts.quoted {
-		e.WriteByte('"')
-	}
+	b := e.AvailableBuffer()
+	b = mayAppendQuote(b, opts.quoted)
+	b = strconv.AppendUint(b, v.Uint(), 10)
+	b = mayAppendQuote(b, opts.quoted)
 	e.Write(b)
-	if opts.quoted {
-		e.WriteByte('"')
-	}
 }
 
 type floatEncoder int // number of bits
@@ -622,7 +576,8 @@ func (bits floatEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	// See golang.org/issue/6384 and golang.org/issue/14135.
 	// Like fmt %g, but the exponent cutoffs are different
 	// and exponents themselves are not padded to two digits.
-	b := e.scratch[:0]
+	b := e.AvailableBuffer()
+	b = mayAppendQuote(b, opts.quoted)
 	abs := math.Abs(f)
 	fmt := byte('f')
 	// Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
@@ -640,14 +595,8 @@ func (bits floatEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 			b = b[:n-1]
 		}
 	}
-
-	if opts.quoted {
-		e.WriteByte('"')
-	}
+	b = mayAppendQuote(b, opts.quoted)
 	e.Write(b)
-	if opts.quoted {
-		e.WriteByte('"')
-	}
 }
 
 var (
@@ -666,28 +615,32 @@ func stringEncoder(e *encodeState, v reflect.Value, opts encOpts) {
 		if !isValidNumber(numStr) {
 			e.error(fmt.Errorf("json: invalid number literal %q", numStr))
 		}
-		if opts.quoted {
-			e.WriteByte('"')
-		}
-		e.WriteString(numStr)
-		if opts.quoted {
-			e.WriteByte('"')
-		}
+		b := e.AvailableBuffer()
+		b = mayAppendQuote(b, opts.quoted)
+		b = append(b, numStr...)
+		b = mayAppendQuote(b, opts.quoted)
+		e.Write(b)
 		return
 	}
 	if opts.quoted {
-		e2 := newEncodeState()
-		// Since we encode the string twice, we only need to escape HTML
-		// the first time.
-		e2.string(v.String(), opts.escapeHTML)
-		e.stringBytes(e2.Bytes(), false)
-		encodeStatePool.Put(e2)
+		b := appendString(nil, v.String(), opts.escapeHTML)
+		e.Write(appendString(e.AvailableBuffer(), b, false)) // no need to escape again since it is already escaped
 	} else {
-		e.string(v.String(), opts.escapeHTML)
+		e.Write(appendString(e.AvailableBuffer(), v.String(), opts.escapeHTML))
 	}
 }
 
 // isValidNumber reports whether s is a valid JSON number literal.
+//
+// isValidNumber 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 isValidNumber
 func isValidNumber(s string) bool {
 	// This function implements the JSON numbers grammar.
 	// See https://tools.ietf.org/html/rfc7159#section-6
@@ -764,8 +717,9 @@ type structEncoder struct {
 }
 
 type structFields struct {
-	list      []field
-	nameIndex map[string]int
+	list         []field
+	byExactName  map[string]*field
+	byFoldedName map[string]*field
 }
 
 func (se structEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
@@ -788,7 +742,7 @@ FieldLoop:
 
 		if f.omitEmpty && isEmptyValue(fv) {
 			continue
-		} else if opts.filter != nil && len(f.jsonfilter) > 0 && !f.jsonfilter.Contains(*opts.filter) {
+		} else if !matchesJSONFilter(f.jsonfilter, opts.filter) {
 			continue
 		}
 		e.WriteByte(next)
@@ -808,6 +762,25 @@ FieldLoop:
 	}
 }
 
+func matchesJSONFilter(filter jsonfilter, value *string) bool {
+	if len(filter) == 0 {
+		return true // no filter in struct
+	}
+	if value == nil || *value == "" {
+		return false // no filter set, but struct has filter, return false
+	}
+	if len(filter) == 1 && filter[0] == "-" {
+		return false
+	}
+	if filter.Contains(*value) {
+		return true
+	}
+	if filter.Contains("*") {
+		return true
+	}
+	return false
+}
+
 func newStructEncoder(t reflect.Type, tagkey string) encoderFunc {
 	se := structEncoder{fields: cachedTypeFields(t, tagkey)}
 	return se.encode
@@ -839,22 +812,26 @@ func (me mapEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	e.WriteByte('{')
 
 	// Extract and sort the keys.
-	sv := make([]reflectWithString, v.Len())
-	mi := v.MapRange()
+	var (
+		sv  = make([]reflectWithString, v.Len())
+		mi  = v.MapRange()
+		err error
+	)
 	for i := 0; mi.Next(); i++ {
-		sv[i].k = mi.Key()
-		sv[i].v = mi.Value()
-		if err := sv[i].resolve(); err != nil {
+		if sv[i].ks, err = resolveKeyName(mi.Key()); err != nil {
 			e.error(fmt.Errorf("json: encoding error for type %q: %q", v.Type().String(), err.Error()))
 		}
+		sv[i].v = mi.Value()
 	}
-	sort.Slice(sv, func(i, j int) bool { return sv[i].ks < sv[j].ks })
+	slices.SortFunc(sv, func(i, j reflectWithString) int {
+		return strings.Compare(i.ks, j.ks)
+	})
 
 	for i, kv := range sv {
 		if i > 0 {
 			e.WriteByte(',')
 		}
-		e.string(kv.ks, opts.escapeHTML)
+		e.Write(appendString(e.AvailableBuffer(), kv.ks, opts.escapeHTML))
 		e.WriteByte(':')
 		me.elemEnc(e, kv.v, opts)
 	}
@@ -885,29 +862,13 @@ func encodeByteSlice(e *encodeState, v reflect.Value, opts encOpts) {
 		}
 		return
 	}
+
 	s := v.Bytes()
-	e.WriteByte('"')
-	encodedLen := base64.StdEncoding.EncodedLen(len(s))
-	if encodedLen <= len(e.scratch) {
-		// If the encoded bytes fit in e.scratch, avoid an extra
-		// allocation and use the cheaper Encoding.Encode.
-		dst := e.scratch[:encodedLen]
-		base64.StdEncoding.Encode(dst, s)
-		e.Write(dst)
-	} else if encodedLen <= 1024 {
-		// The encoded bytes are short enough to allocate for, and
-		// Encoding.Encode is still cheaper.
-		dst := make([]byte, encodedLen)
-		base64.StdEncoding.Encode(dst, s)
-		e.Write(dst)
-	} else {
-		// The encoded bytes are too long to cheaply allocate, and
-		// Encoding.Encode is no longer noticeably cheaper.
-		enc := base64.NewEncoder(base64.StdEncoding, e)
-		enc.Write(s)
-		enc.Close()
-	}
-	e.WriteByte('"')
+	b := e.AvailableBuffer()
+	b = append(b, '"')
+	b = base64.StdEncoding.AppendEncode(b, s)
+	b = append(b, '"')
+	e.Write(b)
 }
 
 // sliceEncoder just wraps an arrayEncoder, checking to make sure the value isn't nil.
@@ -1051,78 +1012,77 @@ func typeByIndex(t reflect.Type, index []int) reflect.Type {
 }
 
 type reflectWithString struct {
-	k  reflect.Value
 	v  reflect.Value
 	ks string
 }
 
-func (w *reflectWithString) resolve() error {
-	if w.k.Kind() == reflect.String {
-		w.ks = w.k.String()
-		return nil
+func resolveKeyName(k reflect.Value) (string, error) {
+	if k.Kind() == reflect.String {
+		return k.String(), nil
 	}
-	if tm, ok := w.k.Interface().(encoding.TextMarshaler); ok {
-		if w.k.Kind() == reflect.Pointer && w.k.IsNil() {
-			return nil
+	if tm, ok := k.Interface().(encoding.TextMarshaler); ok {
+		if k.Kind() == reflect.Pointer && k.IsNil() {
+			return "", nil
 		}
 		buf, err := tm.MarshalText()
-		w.ks = string(buf)
-		return err
+		return string(buf), err
 	}
-	switch w.k.Kind() {
+	switch k.Kind() {
 	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
-		w.ks = strconv.FormatInt(w.k.Int(), 10)
-		return nil
+		return strconv.FormatInt(k.Int(), 10), nil
 	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
-		w.ks = strconv.FormatUint(w.k.Uint(), 10)
-		return nil
+		return strconv.FormatUint(k.Uint(), 10), nil
 	}
 	panic("unexpected map key type")
 }
 
-// NOTE: keep in sync with stringBytes below.
-func (e *encodeState) string(s string, escapeHTML bool) {
-	e.WriteByte('"')
+func appendString[Bytes []byte | string](dst []byte, src Bytes, escapeHTML bool) []byte {
+	dst = append(dst, '"')
 	start := 0
-	for i := 0; i < len(s); {
-		if b := s[i]; b < utf8.RuneSelf {
+	for i := 0; i < len(src); {
+		if b := src[i]; b < utf8.RuneSelf {
 			if htmlSafeSet[b] || (!escapeHTML && safeSet[b]) {
 				i++
 				continue
 			}
-			if start < i {
-				e.WriteString(s[start:i])
-			}
-			e.WriteByte('\\')
+			dst = append(dst, src[start:i]...)
 			switch b {
 			case '\\', '"':
-				e.WriteByte(b)
+				dst = append(dst, '\\', b)
+			case '\b':
+				dst = append(dst, '\\', 'b')
+			case '\f':
+				dst = append(dst, '\\', 'f')
 			case '\n':
-				e.WriteByte('n')
+				dst = append(dst, '\\', 'n')
 			case '\r':
-				e.WriteByte('r')
+				dst = append(dst, '\\', 'r')
 			case '\t':
-				e.WriteByte('t')
+				dst = append(dst, '\\', 't')
 			default:
-				// This encodes bytes < 0x20 except for \t, \n and \r.
+				// This encodes bytes < 0x20 except for \b, \f, \n, \r and \t.
 				// If escapeHTML is set, it also escapes <, >, and &
 				// because they can lead to security holes when
 				// user-controlled strings are rendered into JSON
 				// and served to some browsers.
-				e.WriteString(`u00`)
-				e.WriteByte(hex[b>>4])
-				e.WriteByte(hex[b&0xF])
+				dst = append(dst, '\\', 'u', '0', '0', hex[b>>4], hex[b&0xF])
 			}
 			i++
 			start = i
 			continue
 		}
-		c, size := utf8.DecodeRuneInString(s[i:])
+		// TODO(https://go.dev/issue/56948): Use generic utf8 functionality.
+		// For now, cast only a small portion of byte slices to a string
+		// so that it can be stack allocated. This slows down []byte slightly
+		// due to the extra copy, but keeps string performance roughly the same.
+		n := len(src) - i
+		if n > utf8.UTFMax {
+			n = utf8.UTFMax
+		}
+		c, size := utf8.DecodeRuneInString(string(src[i : i+n]))
 		if c == utf8.RuneError && size == 1 {
-			if start < i {
-				e.WriteString(s[start:i])
-			}
-			e.WriteString(`\ufffd`)
+			dst = append(dst, src[start:i]...)
+			dst = append(dst, `\ufffd`...)
 			i += size
 			start = i
 			continue
@@ -1133,102 +1093,25 @@ func (e *encodeState) string(s string, escapeHTML bool) {
 		// but don't work in JSONP, which has to be evaluated as JavaScript,
 		// and can lead to security holes there. It is valid JSON to
 		// escape them, so we do so unconditionally.
-		// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
+		// See https://en.wikipedia.org/wiki/JSON#Safety.
 		if c == '\u2028' || c == '\u2029' {
-			if start < i {
-				e.WriteString(s[start:i])
-			}
-			e.WriteString(`\u202`)
-			e.WriteByte(hex[c&0xF])
+			dst = append(dst, src[start:i]...)
+			dst = append(dst, '\\', 'u', '2', '0', '2', hex[c&0xF])
 			i += size
 			start = i
 			continue
 		}
 		i += size
 	}
-	if start < len(s) {
-		e.WriteString(s[start:])
-	}
-	e.WriteByte('"')
-}
-
-// NOTE: keep in sync with string above.
-func (e *encodeState) stringBytes(s []byte, escapeHTML bool) {
-	e.WriteByte('"')
-	start := 0
-	for i := 0; i < len(s); {
-		if b := s[i]; b < utf8.RuneSelf {
-			if htmlSafeSet[b] || (!escapeHTML && safeSet[b]) {
-				i++
-				continue
-			}
-			if start < i {
-				e.Write(s[start:i])
-			}
-			e.WriteByte('\\')
-			switch b {
-			case '\\', '"':
-				e.WriteByte(b)
-			case '\n':
-				e.WriteByte('n')
-			case '\r':
-				e.WriteByte('r')
-			case '\t':
-				e.WriteByte('t')
-			default:
-				// This encodes bytes < 0x20 except for \t, \n and \r.
-				// If escapeHTML is set, it also escapes <, >, and &
-				// because they can lead to security holes when
-				// user-controlled strings are rendered into JSON
-				// and served to some browsers.
-				e.WriteString(`u00`)
-				e.WriteByte(hex[b>>4])
-				e.WriteByte(hex[b&0xF])
-			}
-			i++
-			start = i
-			continue
-		}
-		c, size := utf8.DecodeRune(s[i:])
-		if c == utf8.RuneError && size == 1 {
-			if start < i {
-				e.Write(s[start:i])
-			}
-			e.WriteString(`\ufffd`)
-			i += size
-			start = i
-			continue
-		}
-		// U+2028 is LINE SEPARATOR.
-		// U+2029 is PARAGRAPH SEPARATOR.
-		// They are both technically valid characters in JSON strings,
-		// but don't work in JSONP, which has to be evaluated as JavaScript,
-		// and can lead to security holes there. It is valid JSON to
-		// escape them, so we do so unconditionally.
-		// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
-		if c == '\u2028' || c == '\u2029' {
-			if start < i {
-				e.Write(s[start:i])
-			}
-			e.WriteString(`\u202`)
-			e.WriteByte(hex[c&0xF])
-			i += size
-			start = i
-			continue
-		}
-		i += size
-	}
-	if start < len(s) {
-		e.Write(s[start:])
-	}
-	e.WriteByte('"')
+	dst = append(dst, src[start:]...)
+	dst = append(dst, '"')
+	return dst
 }
 
 // A field represents a single field found in a struct.
 type field struct {
 	name      string
-	nameBytes []byte                 // []byte(name)
-	equalFold func(s, t []byte) bool // bytes.EqualFold or equivalent
+	nameBytes []byte // []byte(name)
 
 	nameNonEsc  string // `"` + name + `":`
 	nameEscHTML string // `"` + HTMLEscape(name) + `":`
@@ -1255,28 +1138,19 @@ func (j jsonfilter) Contains(t string) bool {
 	return false
 }
 
-// byIndex sorts field by index sequence.
-type byIndex []field
-
-func (x byIndex) Len() int { return len(x) }
-
-func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
-
-func (x byIndex) Less(i, j int) bool {
-	for k, xik := range x[i].index {
-		if k >= len(x[j].index) {
-			return false
-		}
-		if xik != x[j].index[k] {
-			return xik < x[j].index[k]
-		}
-	}
-	return len(x[i].index) < len(x[j].index)
-}
-
 // typeFields returns a list of fields that JSON should recognize for the given type.
 // The algorithm is breadth-first search over the set of structs to include - the top struct
 // and then any reachable anonymous structs.
+//
+// typeFields 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 typeFields
 func typeFields(t reflect.Type, tagkey string) structFields {
 	// Anonymous fields to explore at the current level and the next.
 	current := []field{}
@@ -1291,8 +1165,8 @@ func typeFields(t reflect.Type, tagkey string) structFields {
 	// Fields found.
 	var fields []field
 
-	// Buffer to run HTMLEscape on field names.
-	var nameEscBuf bytes.Buffer
+	// Buffer to run appendHTMLEscape on field names.
+	var nameEscBuf []byte
 
 	for len(next) > 0 {
 		current, next = next, current[:0]
@@ -1331,10 +1205,10 @@ func typeFields(t reflect.Type, tagkey string) structFields {
 					name = ""
 				}
 
-				var jsonfilter []string
+				var jsonfilterVal []string
 				jsonfilterTag := sf.Tag.Get("jsonfilter")
-				if jsonfilterTag != "" && jsonfilterTag != "-" {
-					jsonfilter = strings.Split(jsonfilterTag, ",")
+				if jsonfilterTag != "" {
+					jsonfilterVal = strings.Split(jsonfilterTag, ",")
 				}
 
 				index := make([]int, len(f.index)+1)
@@ -1372,25 +1246,21 @@ func typeFields(t reflect.Type, tagkey string) structFields {
 						index:      index,
 						typ:        ft,
 						omitEmpty:  opts.Contains("omitempty"),
-						jsonfilter: jsonfilter,
+						jsonfilter: jsonfilterVal,
 						quoted:     quoted,
 					}
 					field.nameBytes = []byte(field.name)
-					field.equalFold = foldFunc(field.nameBytes)
 
 					// Build nameEscHTML and nameNonEsc ahead of time.
-					nameEscBuf.Reset()
-					nameEscBuf.WriteString(`"`)
-					HTMLEscape(&nameEscBuf, field.nameBytes)
-					nameEscBuf.WriteString(`":`)
-					field.nameEscHTML = nameEscBuf.String()
+					nameEscBuf = appendHTMLEscape(nameEscBuf[:0], field.nameBytes)
+					field.nameEscHTML = `"` + string(nameEscBuf) + `":`
 					field.nameNonEsc = `"` + field.name + `":`
 
 					fields = append(fields, field)
 					if count[f.typ] > 1 {
 						// If there were multiple instances, add a second,
 						// so that the annihilation code will see a duplicate.
-						// It only cares about the distinction between 1 or 2,
+						// It only cares about the distinction between 1 and 2,
 						// so don't bother generating any more copies.
 						fields = append(fields, fields[len(fields)-1])
 					}
@@ -1406,21 +1276,23 @@ func typeFields(t reflect.Type, tagkey string) structFields {
 		}
 	}
 
-	sort.Slice(fields, func(i, j int) bool {
-		x := fields
+	slices.SortFunc(fields, func(a, b field) int {
 		// sort field by name, breaking ties with depth, then
 		// breaking ties with "name came from json tag", then
 		// breaking ties with index sequence.
-		if x[i].name != x[j].name {
-			return x[i].name < x[j].name
+		if c := strings.Compare(a.name, b.name); c != 0 {
+			return c
 		}
-		if len(x[i].index) != len(x[j].index) {
-			return len(x[i].index) < len(x[j].index)
+		if c := cmp.Compare(len(a.index), len(b.index)); c != 0 {
+			return c
 		}
-		if x[i].tag != x[j].tag {
-			return x[i].tag
+		if a.tag != b.tag {
+			if a.tag {
+				return -1
+			}
+			return +1
 		}
-		return byIndex(x).Less(i, j)
+		return slices.Compare(a.index, b.index)
 	})
 
 	// Delete all fields that are hidden by the Go rules for embedded fields,
@@ -1452,17 +1324,24 @@ func typeFields(t reflect.Type, tagkey string) structFields {
 	}
 
 	fields = out
-	sort.Sort(byIndex(fields))
+	slices.SortFunc(fields, func(i, j field) int {
+		return slices.Compare(i.index, j.index)
+	})
 
 	for i := range fields {
 		f := &fields[i]
 		f.encoder = typeEncoder(typeByIndex(t, f.index), tagkey)
 	}
-	nameIndex := make(map[string]int, len(fields))
+	exactNameIndex := make(map[string]*field, len(fields))
+	foldedNameIndex := make(map[string]*field, len(fields))
 	for i, field := range fields {
-		nameIndex[field.name] = i
+		exactNameIndex[field.name] = &fields[i]
+		// For historical reasons, first folded match takes precedence.
+		if _, ok := foldedNameIndex[string(foldName(field.nameBytes))]; !ok {
+			foldedNameIndex[string(foldName(field.nameBytes))] = &fields[i]
+		}
 	}
-	return structFields{fields, nameIndex}
+	return structFields{fields, exactNameIndex, foldedNameIndex}
 }
 
 // dominantField looks through the fields, all of which are known to
@@ -1481,26 +1360,25 @@ func dominantField(fields []field) (field, bool) {
 	return fields[0], true
 }
 
-var fieldCache sync.Map // map[string]map[reflect.Type]structFields
+var fieldCache sync.Map // map[reflect.Type + tagkey]structFields
 
 // cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
 func cachedTypeFields(t reflect.Type, tagkey string) structFields {
-	if m0, ok := fieldCache.Load(tagkey); ok {
-
-		if f, ok := m0.(*sync.Map).Load(t); ok {
-			return f.(structFields)
-		}
-		f, _ := m0.(*sync.Map).LoadOrStore(t, typeFields(t, tagkey))
-		return f.(structFields)
-
-	} else {
-
-		m0 := &sync.Map{}
-		f, _ := m0.LoadOrStore(t, typeFields(t, tagkey))
-
-		fieldCache.Store(tagkey, m0)
-
+	if f, ok := fieldCache.Load(TagKeyTypeKey{t, tagkey}); ok {
 		return f.(structFields)
 	}
-
+	f, _ := fieldCache.LoadOrStore(TagKeyTypeKey{t, tagkey}, typeFields(t, tagkey))
+	return f.(structFields)
+}
+
+func mayAppendQuote(b []byte, quoted bool) []byte {
+	if quoted {
+		b = append(b, '"')
+	}
+	return b
+}
+
+type TagKeyTypeKey struct {
+	Type   reflect.Type
+	TagKey string
 }

gojson/fold.go

@@ -5,140 +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
 	}
-	if len(t) > 0 {
-		return false
-	}
-	return true
+	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

@@ -6,111 +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) {
-	const bufSize = 5
-	buf1 := make([]byte, 0, bufSize)
-	buf2 := make([]byte, 0, bufSize)
-	var runes []rune
-	for i := 0x20; i <= 0x7f; i++ {
-		runes = append(runes, rune(i))
-	}
-	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(buf1[:0], 'x')
-				buf2 := append(buf2[:0], 'x')
-				buf1 = buf1[:1+utf8.EncodeRune(buf1[1:bufSize], r)]
-				buf2 = buf2[:1+utf8.EncodeRune(buf2[1:bufSize], r2)]
-				buf1 = append(buf1, 'x')
-				buf2 = append(buf2, 'x')
-				want := bytes.EqualFold(buf1, buf2)
-				if got := ff.fold(buf1, buf2); got != want {
-					t.Errorf("%s(%q, %q) = %v; want %v", ff.name, buf1, buf2, got, want)
-				}
-			}
-		}
-	}
-}
-
-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
-}

gojson/gionic.go

@@ -25,7 +25,6 @@ func (r GoJsonRender) Render(w http.ResponseWriter) error {
 	if val := header["Content-Type"]; len(val) == 0 {
 		header["Content-Type"] = []string{"application/json; charset=utf-8"}
 	}
-
 	jsonBytes, err := MarshalSafeCollections(r.Data, r.NilSafeSlices, r.NilSafeMaps, r.Indent, r.Filter)
 	if err != nil {
 		panic(err)

gojson/indent.go

@@ -4,38 +4,67 @@
 
 package json
 
-import (
-	"bytes"
-)
+import "bytes"
+
+// HTMLEscape appends to dst the JSON-encoded src with <, >, &, U+2028 and U+2029
+// characters inside string literals changed to \u003c, \u003e, \u0026, \u2028, \u2029
+// so that the JSON will be safe to embed inside HTML <script> tags.
+// For historical reasons, web browsers don't honor standard HTML
+// escaping within <script> tags, so an alternative JSON encoding must be used.
+func HTMLEscape(dst *bytes.Buffer, src []byte) {
+	dst.Grow(len(src))
+	dst.Write(appendHTMLEscape(dst.AvailableBuffer(), src))
+}
+
+func appendHTMLEscape(dst, src []byte) []byte {
+	// The characters can only appear in string literals,
+	// so just scan the string one byte at a time.
+	start := 0
+	for i, c := range src {
+		if c == '<' || c == '>' || c == '&' {
+			dst = append(dst, src[start:i]...)
+			dst = append(dst, '\\', 'u', '0', '0', hex[c>>4], hex[c&0xF])
+			start = i + 1
+		}
+		// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
+		if c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
+			dst = append(dst, src[start:i]...)
+			dst = append(dst, '\\', 'u', '2', '0', '2', hex[src[i+2]&0xF])
+			start = i + len("\u2029")
+		}
+	}
+	return append(dst, src[start:]...)
+}
 
 // Compact appends to dst the JSON-encoded src with
 // insignificant space characters elided.
 func Compact(dst *bytes.Buffer, src []byte) error {
-	return compact(dst, src, false)
+	dst.Grow(len(src))
+	b := dst.AvailableBuffer()
+	b, err := appendCompact(b, src, false)
+	dst.Write(b)
+	return err
 }
 
-func compact(dst *bytes.Buffer, src []byte, escape bool) error {
-	origLen := dst.Len()
+func appendCompact(dst, src []byte, escape bool) ([]byte, error) {
+	origLen := len(dst)
 	scan := newScanner()
 	defer freeScanner(scan)
 	start := 0
 	for i, c := range src {
 		if escape && (c == '<' || c == '>' || c == '&') {
 			if start < i {
-				dst.Write(src[start:i])
+				dst = append(dst, src[start:i]...)
 			}
-			dst.WriteString(`\u00`)
-			dst.WriteByte(hex[c>>4])
-			dst.WriteByte(hex[c&0xF])
+			dst = append(dst, '\\', 'u', '0', '0', hex[c>>4], hex[c&0xF])
 			start = i + 1
 		}
 		// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
 		if escape && c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
 			if start < i {
-				dst.Write(src[start:i])
+				dst = append(dst, src[start:i]...)
 			}
-			dst.WriteString(`\u202`)
-			dst.WriteByte(hex[src[i+2]&0xF])
+			dst = append(dst, '\\', 'u', '2', '0', '2', hex[src[i+2]&0xF])
 			start = i + 3
 		}
 		v := scan.step(scan, c)
@@ -44,29 +73,37 @@ func compact(dst *bytes.Buffer, src []byte, escape bool) error {
 				break
 			}
 			if start < i {
-				dst.Write(src[start:i])
+				dst = append(dst, src[start:i]...)
 			}
 			start = i + 1
 		}
 	}
 	if scan.eof() == scanError {
-		dst.Truncate(origLen)
-		return scan.err
+		return dst[:origLen], scan.err
 	}
 	if start < len(src) {
-		dst.Write(src[start:])
+		dst = append(dst, src[start:]...)
 	}
-	return nil
+	return dst, nil
 }
 
-func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
-	dst.WriteByte('\n')
-	dst.WriteString(prefix)
+func appendNewline(dst []byte, prefix, indent string, depth int) []byte {
+	dst = append(dst, '\n')
+	dst = append(dst, prefix...)
 	for i := 0; i < depth; i++ {
-		dst.WriteString(indent)
+		dst = append(dst, indent...)
 	}
+	return dst
 }
 
+// indentGrowthFactor specifies the growth factor of indenting JSON input.
+// Empirically, the growth factor was measured to be between 1.4x to 1.8x
+// for some set of compacted JSON with the indent being a single tab.
+// Specify a growth factor slightly larger than what is observed
+// to reduce probability of allocation in appendIndent.
+// A factor no higher than 2 ensures that wasted space never exceeds 50%.
+const indentGrowthFactor = 2
+
 // Indent appends to dst an indented form of the JSON-encoded src.
 // Each element in a JSON object or array begins on a new,
 // indented line beginning with prefix followed by one or more
@@ -79,7 +116,15 @@ func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
 // For example, if src has no trailing spaces, neither will dst;
 // if src ends in a trailing newline, so will dst.
 func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
-	origLen := dst.Len()
+	dst.Grow(indentGrowthFactor * len(src))
+	b := dst.AvailableBuffer()
+	b, err := appendIndent(b, src, prefix, indent)
+	dst.Write(b)
+	return err
+}
+
+func appendIndent(dst, src []byte, prefix, indent string) ([]byte, error) {
+	origLen := len(dst)
 	scan := newScanner()
 	defer freeScanner(scan)
 	needIndent := false
@@ -96,13 +141,13 @@ func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
 		if needIndent && v != scanEndObject && v != scanEndArray {
 			needIndent = false
 			depth++
-			newline(dst, prefix, indent, depth)
+			dst = appendNewline(dst, prefix, indent, depth)
 		}
 
 		// Emit semantically uninteresting bytes
 		// (in particular, punctuation in strings) unmodified.
 		if v == scanContinue {
-			dst.WriteByte(c)
+			dst = append(dst, c)
 			continue
 		}
 
@@ -111,33 +156,27 @@ func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
 		case '{', '[':
 			// delay indent so that empty object and array are formatted as {} and [].
 			needIndent = true
-			dst.WriteByte(c)
-
+			dst = append(dst, c)
 		case ',':
-			dst.WriteByte(c)
-			newline(dst, prefix, indent, depth)
-
+			dst = append(dst, c)
+			dst = appendNewline(dst, prefix, indent, depth)
 		case ':':
-			dst.WriteByte(c)
-			dst.WriteByte(' ')
-
+			dst = append(dst, c, ' ')
 		case '}', ']':
 			if needIndent {
 				// suppress indent in empty object/array
 				needIndent = false
 			} else {
 				depth--
-				newline(dst, prefix, indent, depth)
+				dst = appendNewline(dst, prefix, indent, depth)
 			}
-			dst.WriteByte(c)
-
+			dst = append(dst, c)
 		default:
-			dst.WriteByte(c)
+			dst = append(dst, c)
 		}
 	}
 	if scan.eof() == scanError {
-		dst.Truncate(origLen)
-		return scan.err
+		return dst[:origLen], scan.err
 	}
-	return nil
+	return dst, nil
 }

gojson/number_test.go

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

gojson/scanner.go

@@ -43,7 +43,7 @@ func checkValid(data []byte, scan *scanner) error {
 }
 
 // A SyntaxError is a description of a JSON syntax error.
-// Unmarshal will return a SyntaxError if the JSON can't be parsed.
+// [Unmarshal] will return a SyntaxError if the JSON can't be parsed.
 type SyntaxError struct {
 	msg    string // description of error
 	Offset int64  // error occurred after reading Offset bytes
@@ -594,7 +594,7 @@ func (s *scanner) error(c byte, context string) int {
 	return scanError
 }
 
-// quoteChar formats c as a quoted character literal
+// quoteChar formats c as a quoted character literal.
 func quoteChar(c byte) string {
 	// special cases - different from quoted strings
 	if c == '\'' {

gojson/scanner_test.go

@@ -9,51 +9,59 @@ import (
 	"math"
 	"math/rand"
 	"reflect"
+	"strings"
 	"testing"
 )
 
-var validTests = []struct {
-	data string
-	ok   bool
-}{
-	{`foo`, false},
-	{`}{`, false},
-	{`{]`, false},
-	{`{}`, true},
-	{`{"foo":"bar"}`, true},
-	{`{"foo":"bar","bar":{"baz":["qux"]}}`, true},
+func indentNewlines(s string) string {
+	return strings.Join(strings.Split(s, "\n"), "\n\t")
+}
+
+func stripWhitespace(s string) string {
+	return strings.Map(func(r rune) rune {
+		if r == ' ' || r == '\n' || r == '\r' || r == '\t' {
+			return -1
+		}
+		return r
+	}, s)
 }
 
 func TestValid(t *testing.T) {
-	for _, tt := range validTests {
-		if ok := Valid([]byte(tt.data)); ok != tt.ok {
-			t.Errorf("Valid(%#q) = %v, want %v", tt.data, ok, tt.ok)
-		}
+	tests := []struct {
+		CaseName
+		data string
+		ok   bool
+	}{
+		{Name(""), `foo`, false},
+		{Name(""), `}{`, false},
+		{Name(""), `{]`, false},
+		{Name(""), `{}`, true},
+		{Name(""), `{"foo":"bar"}`, true},
+		{Name(""), `{"foo":"bar","bar":{"baz":["qux"]}}`, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			if ok := Valid([]byte(tt.data)); ok != tt.ok {
+				t.Errorf("%s: Valid(`%s`) = %v, want %v", tt.Where, tt.data, ok, tt.ok)
+			}
+		})
 	}
 }
 
-// Tests of simple examples.
-
-type example struct {
-	compact string
-	indent  string
-}
-
-var examples = []example{
-	{`1`, `1`},
-	{`{}`, `{}`},
-	{`[]`, `[]`},
-	{`{"":2}`, "{\n\t\"\": 2\n}"},
-	{`[3]`, "[\n\t3\n]"},
-	{`[1,2,3]`, "[\n\t1,\n\t2,\n\t3\n]"},
-	{`{"x":1}`, "{\n\t\"x\": 1\n}"},
-	{ex1, ex1i},
-	{"{\"\":\"<>&\u2028\u2029\"}", "{\n\t\"\": \"<>&\u2028\u2029\"\n}"}, // See golang.org/issue/34070
-}
-
-var ex1 = `[true,false,null,"x",1,1.5,0,-5e+2]`
-
-var ex1i = `[
+func TestCompactAndIndent(t *testing.T) {
+	tests := []struct {
+		CaseName
+		compact string
+		indent  string
+	}{
+		{Name(""), `1`, `1`},
+		{Name(""), `{}`, `{}`},
+		{Name(""), `[]`, `[]`},
+		{Name(""), `{"":2}`, "{\n\t\"\": 2\n}"},
+		{Name(""), `[3]`, "[\n\t3\n]"},
+		{Name(""), `[1,2,3]`, "[\n\t1,\n\t2,\n\t3\n]"},
+		{Name(""), `{"x":1}`, "{\n\t\"x\": 1\n}"},
+		{Name(""), `[true,false,null,"x",1,1.5,0,-5e+2]`, `[
 	true,
 	false,
 	null,
@@ -62,25 +70,40 @@ var ex1i = `[
 	1.5,
 	0,
 	-5e+2
-]`
-
-func TestCompact(t *testing.T) {
+]`},
+		{Name(""), "{\"\":\"<>&\u2028\u2029\"}", "{\n\t\"\": \"<>&\u2028\u2029\"\n}"}, // See golang.org/issue/34070
+	}
 	var buf bytes.Buffer
-	for _, tt := range examples {
-		buf.Reset()
-		if err := Compact(&buf, []byte(tt.compact)); err != nil {
-			t.Errorf("Compact(%#q): %v", tt.compact, err)
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%#q) = %#q, want original", tt.compact, s)
-		}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			buf.Reset()
+			if err := Compact(&buf, []byte(tt.compact)); err != nil {
+				t.Errorf("%s: Compact error: %v", tt.Where, err)
+			} else if got := buf.String(); got != tt.compact {
+				t.Errorf("%s: Compact:\n\tgot:  %s\n\twant: %s", tt.Where, indentNewlines(got), indentNewlines(tt.compact))
+			}
 
-		buf.Reset()
-		if err := Compact(&buf, []byte(tt.indent)); err != nil {
-			t.Errorf("Compact(%#q): %v", tt.indent, err)
-			continue
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%#q) = %#q, want %#q", tt.indent, s, tt.compact)
-		}
+			buf.Reset()
+			if err := Compact(&buf, []byte(tt.indent)); err != nil {
+				t.Errorf("%s: Compact error: %v", tt.Where, err)
+			} else if got := buf.String(); got != tt.compact {
+				t.Errorf("%s: Compact:\n\tgot:  %s\n\twant: %s", tt.Where, indentNewlines(got), indentNewlines(tt.compact))
+			}
+
+			buf.Reset()
+			if err := Indent(&buf, []byte(tt.indent), "", "\t"); err != nil {
+				t.Errorf("%s: Indent error: %v", tt.Where, err)
+			} else if got := buf.String(); got != tt.indent {
+				t.Errorf("%s: Compact:\n\tgot:  %s\n\twant: %s", tt.Where, indentNewlines(got), indentNewlines(tt.indent))
+			}
+
+			buf.Reset()
+			if err := Indent(&buf, []byte(tt.compact), "", "\t"); err != nil {
+				t.Errorf("%s: Indent error: %v", tt.Where, err)
+			} else if got := buf.String(); got != tt.indent {
+				t.Errorf("%s: Compact:\n\tgot:  %s\n\twant: %s", tt.Where, indentNewlines(got), indentNewlines(tt.indent))
+			}
+		})
 	}
 }
 
@@ -88,38 +111,21 @@ func TestCompactSeparators(t *testing.T) {
 	// U+2028 and U+2029 should be escaped inside strings.
 	// They should not appear outside strings.
 	tests := []struct {
+		CaseName
 		in, compact string
 	}{
-		{"{\"\u2028\": 1}", "{\"\u2028\":1}"},
-		{"{\"\u2029\" :2}", "{\"\u2029\":2}"},
+		{Name(""), "{\"\u2028\": 1}", "{\"\u2028\":1}"},
+		{Name(""), "{\"\u2029\" :2}", "{\"\u2029\":2}"},
 	}
 	for _, tt := range tests {
-		var buf bytes.Buffer
-		if err := Compact(&buf, []byte(tt.in)); err != nil {
-			t.Errorf("Compact(%q): %v", tt.in, err)
-		} else if s := buf.String(); s != tt.compact {
-			t.Errorf("Compact(%q) = %q, want %q", tt.in, s, tt.compact)
-		}
-	}
-}
-
-func TestIndent(t *testing.T) {
-	var buf bytes.Buffer
-	for _, tt := range examples {
-		buf.Reset()
-		if err := Indent(&buf, []byte(tt.indent), "", "\t"); err != nil {
-			t.Errorf("Indent(%#q): %v", tt.indent, err)
-		} else if s := buf.String(); s != tt.indent {
-			t.Errorf("Indent(%#q) = %#q, want original", tt.indent, s)
-		}
-
-		buf.Reset()
-		if err := Indent(&buf, []byte(tt.compact), "", "\t"); err != nil {
-			t.Errorf("Indent(%#q): %v", tt.compact, err)
-			continue
-		} else if s := buf.String(); s != tt.indent {
-			t.Errorf("Indent(%#q) = %#q, want %#q", tt.compact, s, tt.indent)
-		}
+		t.Run(tt.Name, func(t *testing.T) {
+			var buf bytes.Buffer
+			if err := Compact(&buf, []byte(tt.in)); err != nil {
+				t.Errorf("%s: Compact error: %v", tt.Where, err)
+			} else if got := buf.String(); got != tt.compact {
+				t.Errorf("%s: Compact:\n\tgot:  %s\n\twant: %s", tt.Where, indentNewlines(got), indentNewlines(tt.compact))
+			}
+		})
 	}
 }
 
@@ -129,11 +135,11 @@ func TestCompactBig(t *testing.T) {
 	initBig()
 	var buf bytes.Buffer
 	if err := Compact(&buf, jsonBig); err != nil {
-		t.Fatalf("Compact: %v", err)
+		t.Fatalf("Compact error: %v", err)
 	}
 	b := buf.Bytes()
 	if !bytes.Equal(b, jsonBig) {
-		t.Error("Compact(jsonBig) != jsonBig")
+		t.Error("Compact:")
 		diff(t, b, jsonBig)
 		return
 	}
@@ -144,23 +150,23 @@ func TestIndentBig(t *testing.T) {
 	initBig()
 	var buf bytes.Buffer
 	if err := Indent(&buf, jsonBig, "", "\t"); err != nil {
-		t.Fatalf("Indent1: %v", err)
+		t.Fatalf("Indent error: %v", err)
 	}
 	b := buf.Bytes()
 	if len(b) == len(jsonBig) {
 		// jsonBig is compact (no unnecessary spaces);
 		// indenting should make it bigger
-		t.Fatalf("Indent(jsonBig) did not get bigger")
+		t.Fatalf("Indent did not expand the input")
 	}
 
 	// should be idempotent
 	var buf1 bytes.Buffer
 	if err := Indent(&buf1, b, "", "\t"); err != nil {
-		t.Fatalf("Indent2: %v", err)
+		t.Fatalf("Indent error: %v", err)
 	}
 	b1 := buf1.Bytes()
 	if !bytes.Equal(b1, b) {
-		t.Error("Indent(Indent(jsonBig)) != Indent(jsonBig)")
+		t.Error("Indent(Indent(jsonBig)) != Indent(jsonBig):")
 		diff(t, b1, b)
 		return
 	}
@@ -168,40 +174,40 @@ func TestIndentBig(t *testing.T) {
 	// should get back to original
 	buf1.Reset()
 	if err := Compact(&buf1, b); err != nil {
-		t.Fatalf("Compact: %v", err)
+		t.Fatalf("Compact error: %v", err)
 	}
 	b1 = buf1.Bytes()
 	if !bytes.Equal(b1, jsonBig) {
-		t.Error("Compact(Indent(jsonBig)) != jsonBig")
+		t.Error("Compact(Indent(jsonBig)) != jsonBig:")
 		diff(t, b1, jsonBig)
 		return
 	}
 }
 
-type indentErrorTest struct {
-	in  string
-	err error
-}
-
-var indentErrorTests = []indentErrorTest{
-	{`{"X": "foo", "Y"}`, &SyntaxError{"invalid character '}' after object key", 17}},
-	{`{"X": "foo" "Y": "bar"}`, &SyntaxError{"invalid character '\"' after object key:value pair", 13}},
-}
-
 func TestIndentErrors(t *testing.T) {
-	for i, tt := range indentErrorTests {
-		slice := make([]uint8, 0)
-		buf := bytes.NewBuffer(slice)
-		if err := Indent(buf, []uint8(tt.in), "", ""); err != nil {
-			if !reflect.DeepEqual(err, tt.err) {
-				t.Errorf("#%d: Indent: %#v", i, err)
-				continue
+	tests := []struct {
+		CaseName
+		in  string
+		err error
+	}{
+		{Name(""), `{"X": "foo", "Y"}`, &SyntaxError{"invalid character '}' after object key", 17}},
+		{Name(""), `{"X": "foo" "Y": "bar"}`, &SyntaxError{"invalid character '\"' after object key:value pair", 13}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			slice := make([]uint8, 0)
+			buf := bytes.NewBuffer(slice)
+			if err := Indent(buf, []uint8(tt.in), "", ""); err != nil {
+				if !reflect.DeepEqual(err, tt.err) {
+					t.Fatalf("%s: Indent error:\n\tgot:  %v\n\twant: %v", tt.Where, err, tt.err)
+				}
 			}
-		}
+		})
 	}
 }
 
 func diff(t *testing.T, a, b []byte) {
+	t.Helper()
 	for i := 0; ; i++ {
 		if i >= len(a) || i >= len(b) || a[i] != b[i] {
 			j := i - 10
@@ -215,10 +221,7 @@ func diff(t *testing.T, a, b []byte) {
 }
 
 func trim(b []byte) []byte {
-	if len(b) > 20 {
-		return b[0:20]
-	}
-	return b
+	return b[:min(len(b), 20)]
 }
 
 // Generate a random JSON object.

gojson/stream.go

@@ -33,7 +33,7 @@ func NewDecoder(r io.Reader) *Decoder {
 }
 
 // UseNumber causes the Decoder to unmarshal a number into an interface{} as a
-// Number instead of as a float64.
+// [Number] instead of as a float64.
 func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
 
 // DisallowUnknownFields causes the Decoder to return an error when the destination
@@ -47,7 +47,7 @@ func (dec *Decoder) TagKey(v string) { dec.d.tagkey = &v }
 // Decode reads the next JSON-encoded value from its
 // input and stores it in the value pointed to by v.
 //
-// See the documentation for Unmarshal for details about
+// See the documentation for [Unmarshal] for details about
 // the conversion of JSON into a Go value.
 func (dec *Decoder) Decode(v any) error {
 	if dec.err != nil {
@@ -82,7 +82,7 @@ func (dec *Decoder) Decode(v any) error {
 }
 
 // Buffered returns a reader of the data remaining in the Decoder's
-// buffer. The reader is valid until the next call to Decode.
+// buffer. The reader is valid until the next call to [Decoder.Decode].
 func (dec *Decoder) Buffered() io.Reader {
 	return bytes.NewReader(dec.buf[dec.scanp:])
 }
@@ -186,7 +186,7 @@ type Encoder struct {
 	err        error
 	escapeHTML bool
 
-	indentBuf    *bytes.Buffer
+	indentBuf    []byte
 	indentPrefix string
 	indentValue  string
 }
@@ -197,15 +197,19 @@ func NewEncoder(w io.Writer) *Encoder {
 }
 
 // Encode writes the JSON encoding of v to the stream,
+// with insignificant space characters elided,
 // followed by a newline character.
 //
-// See the documentation for Marshal for details about the
+// See the documentation for [Marshal] for details about the
 // conversion of Go values to JSON.
 func (enc *Encoder) Encode(v any) error {
 	if enc.err != nil {
 		return enc.err
 	}
+
 	e := newEncodeState()
+	defer encodeStatePool.Put(e)
+
 	err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML})
 	if err != nil {
 		return err
@@ -221,20 +225,15 @@ func (enc *Encoder) Encode(v any) error {
 
 	b := e.Bytes()
 	if enc.indentPrefix != "" || enc.indentValue != "" {
-		if enc.indentBuf == nil {
-			enc.indentBuf = new(bytes.Buffer)
-		}
-		enc.indentBuf.Reset()
-		err = Indent(enc.indentBuf, b, enc.indentPrefix, enc.indentValue)
+		enc.indentBuf, err = appendIndent(enc.indentBuf[:0], b, enc.indentPrefix, enc.indentValue)
 		if err != nil {
 			return err
 		}
-		b = enc.indentBuf.Bytes()
+		b = enc.indentBuf
 	}
 	if _, err = enc.w.Write(b); err != nil {
 		enc.err = err
 	}
-	encodeStatePool.Put(e)
 	return err
 }
 
@@ -258,7 +257,7 @@ func (enc *Encoder) SetEscapeHTML(on bool) {
 }
 
 // RawMessage is a raw encoded JSON value.
-// It implements Marshaler and Unmarshaler and can
+// It implements [Marshaler] and [Unmarshaler] and can
 // be used to delay JSON decoding or precompute a JSON encoding.
 type RawMessage []byte
 
@@ -284,12 +283,12 @@ var _ Unmarshaler = (*RawMessage)(nil)
 
 // A Token holds a value of one of these types:
 //
-//	Delim, for the four JSON delimiters [ ] { }
-//	bool, for JSON booleans
-//	float64, for JSON numbers
-//	Number, for JSON numbers
-//	string, for JSON string literals
-//	nil, for JSON null
+//   - [Delim], for the four JSON delimiters [ ] { }
+//   - bool, for JSON booleans
+//   - float64, for JSON numbers
+//   - [Number], for JSON numbers
+//   - string, for JSON string literals
+//   - nil, for JSON null
 type Token any
 
 const (
@@ -359,14 +358,14 @@ func (d Delim) String() string {
 }
 
 // Token returns the next JSON token in the input stream.
-// At the end of the input stream, Token returns nil, io.EOF.
+// At the end of the input stream, Token returns nil, [io.EOF].
 //
 // Token guarantees that the delimiters [ ] { } it returns are
 // properly nested and matched: if Token encounters an unexpected
 // delimiter in the input, it will return an error.
 //
 // The input stream consists of basic JSON values—bool, string,
-// number, and null—along with delimiters [ ] { } of type Delim
+// number, and null—along with delimiters [ ] { } of type [Delim]
 // to mark the start and end of arrays and objects.
 // Commas and colons are elided.
 func (dec *Decoder) Token() (Token, error) {

gojson/stream_test.go

@@ -6,16 +6,44 @@ package json
 
 import (
 	"bytes"
+	"fmt"
 	"io"
 	"log"
 	"net"
 	"net/http"
 	"net/http/httptest"
+	"path"
 	"reflect"
+	"runtime"
+	"runtime/debug"
 	"strings"
 	"testing"
 )
 
+// TODO(https://go.dev/issue/52751): Replace with native testing support.
+
+// CaseName is a case name annotated with a file and line.
+type CaseName struct {
+	Name  string
+	Where CasePos
+}
+
+// Name annotates a case name with the file and line of the caller.
+func Name(s string) (c CaseName) {
+	c.Name = s
+	runtime.Callers(2, c.Where.pc[:])
+	return c
+}
+
+// CasePos represents a file and line number.
+type CasePos struct{ pc [1]uintptr }
+
+func (pos CasePos) String() string {
+	frames := runtime.CallersFrames(pos.pc[:])
+	frame, _ := frames.Next()
+	return fmt.Sprintf("%s:%d", path.Base(frame.File), frame.Line)
+}
+
 // Test values for the stream test.
 // One of each JSON kind.
 var streamTest = []any{
@@ -41,24 +69,61 @@ false
 
 func TestEncoder(t *testing.T) {
 	for i := 0; i <= len(streamTest); i++ {
-		var buf bytes.Buffer
+		var buf strings.Builder
 		enc := NewEncoder(&buf)
 		// Check that enc.SetIndent("", "") turns off indentation.
 		enc.SetIndent(">", ".")
 		enc.SetIndent("", "")
 		for j, v := range streamTest[0:i] {
 			if err := enc.Encode(v); err != nil {
-				t.Fatalf("encode #%d: %v", j, err)
+				t.Fatalf("#%d.%d Encode error: %v", i, j, err)
 			}
 		}
 		if have, want := buf.String(), nlines(streamEncoded, i); have != want {
-			t.Errorf("encoding %d items: mismatch", i)
+			t.Errorf("encoding %d items: mismatch:", i)
 			diff(t, []byte(have), []byte(want))
 			break
 		}
 	}
 }
 
+func TestEncoderErrorAndReuseEncodeState(t *testing.T) {
+	// Disable the GC temporarily to prevent encodeState's in Pool being cleaned away during the test.
+	percent := debug.SetGCPercent(-1)
+	defer debug.SetGCPercent(percent)
+
+	// Trigger an error in Marshal with cyclic data.
+	type Dummy struct {
+		Name string
+		Next *Dummy
+	}
+	dummy := Dummy{Name: "Dummy"}
+	dummy.Next = &dummy
+
+	var buf bytes.Buffer
+	enc := NewEncoder(&buf)
+	if err := enc.Encode(dummy); err == nil {
+		t.Errorf("Encode(dummy) error: got nil, want non-nil")
+	}
+
+	type Data struct {
+		A string
+		I int
+	}
+	want := Data{A: "a", I: 1}
+	if err := enc.Encode(want); err != nil {
+		t.Errorf("Marshal error: %v", err)
+	}
+
+	var got Data
+	if err := Unmarshal(buf.Bytes(), &got); err != nil {
+		t.Errorf("Unmarshal error: %v", err)
+	}
+	if got != want {
+		t.Errorf("Marshal/Unmarshal roundtrip:\n\tgot:  %v\n\twant: %v", got, want)
+	}
+}
+
 var streamEncodedIndent = `0.1
 "hello"
 null
@@ -77,14 +142,14 @@ false
 `
 
 func TestEncoderIndent(t *testing.T) {
-	var buf bytes.Buffer
+	var buf strings.Builder
 	enc := NewEncoder(&buf)
 	enc.SetIndent(">", ".")
 	for _, v := range streamTest {
 		enc.Encode(v)
 	}
 	if have, want := buf.String(), streamEncodedIndent; have != want {
-		t.Error("indented encoding mismatch")
+		t.Error("Encode mismatch:")
 		diff(t, []byte(have), []byte(want))
 	}
 }
@@ -122,50 +187,51 @@ func TestEncoderSetEscapeHTML(t *testing.T) {
 		Bar string `json:"bar,string"`
 	}{`<html>foobar</html>`}
 
-	for _, tt := range []struct {
-		name       string
+	tests := []struct {
+		CaseName
 		v          any
 		wantEscape string
 		want       string
 	}{
-		{"c", c, `"\u003c\u0026\u003e"`, `"<&>"`},
-		{"ct", ct, `"\"\u003c\u0026\u003e\""`, `"\"<&>\""`},
-		{`"<&>"`, "<&>", `"\u003c\u0026\u003e"`, `"<&>"`},
+		{Name("c"), c, `"\u003c\u0026\u003e"`, `"<&>"`},
+		{Name("ct"), ct, `"\"\u003c\u0026\u003e\""`, `"\"<&>\""`},
+		{Name(`"<&>"`), "<&>", `"\u003c\u0026\u003e"`, `"<&>"`},
 		{
-			"tagStruct", tagStruct,
+			Name("tagStruct"), tagStruct,
 			`{"\u003c\u003e\u0026#! ":0,"Invalid":0}`,
 			`{"<>&#! ":0,"Invalid":0}`,
 		},
 		{
-			`"<str>"`, marshalerStruct,
+			Name(`"<str>"`), marshalerStruct,
 			`{"NonPtr":"\u003cstr\u003e","Ptr":"\u003cstr\u003e"}`,
 			`{"NonPtr":"<str>","Ptr":"<str>"}`,
 		},
 		{
-			"stringOption", stringOption,
+			Name("stringOption"), stringOption,
 			`{"bar":"\"\\u003chtml\\u003efoobar\\u003c/html\\u003e\""}`,
 			`{"bar":"\"<html>foobar</html>\""}`,
 		},
-	} {
-		var buf bytes.Buffer
-		enc := NewEncoder(&buf)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Errorf("Encode(%s): %s", tt.name, err)
-			continue
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.wantEscape {
-			t.Errorf("Encode(%s) = %#q, want %#q", tt.name, got, tt.wantEscape)
-		}
-		buf.Reset()
-		enc.SetEscapeHTML(false)
-		if err := enc.Encode(tt.v); err != nil {
-			t.Errorf("SetEscapeHTML(false) Encode(%s): %s", tt.name, err)
-			continue
-		}
-		if got := strings.TrimSpace(buf.String()); got != tt.want {
-			t.Errorf("SetEscapeHTML(false) Encode(%s) = %#q, want %#q",
-				tt.name, got, tt.want)
-		}
+	}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			var buf strings.Builder
+			enc := NewEncoder(&buf)
+			if err := enc.Encode(tt.v); err != nil {
+				t.Fatalf("%s: Encode(%s) error: %s", tt.Where, tt.Name, err)
+			}
+			if got := strings.TrimSpace(buf.String()); got != tt.wantEscape {
+				t.Errorf("%s: Encode(%s):\n\tgot:  %s\n\twant: %s", tt.Where, tt.Name, got, tt.wantEscape)
+			}
+			buf.Reset()
+			enc.SetEscapeHTML(false)
+			if err := enc.Encode(tt.v); err != nil {
+				t.Fatalf("%s: SetEscapeHTML(false) Encode(%s) error: %s", tt.Where, tt.Name, err)
+			}
+			if got := strings.TrimSpace(buf.String()); got != tt.want {
+				t.Errorf("%s: SetEscapeHTML(false) Encode(%s):\n\tgot:  %s\n\twant: %s",
+					tt.Where, tt.Name, got, tt.want)
+			}
+		})
 	}
 }
 
@@ -186,14 +252,14 @@ func TestDecoder(t *testing.T) {
 		dec := NewDecoder(&buf)
 		for j := range out {
 			if err := dec.Decode(&out[j]); err != nil {
-				t.Fatalf("decode #%d/%d: %v", j, i, err)
+				t.Fatalf("decode #%d/%d error: %v", j, i, err)
 			}
 		}
 		if !reflect.DeepEqual(out, streamTest[0:i]) {
-			t.Errorf("decoding %d items: mismatch", i)
+			t.Errorf("decoding %d items: mismatch:", i)
 			for j := range out {
 				if !reflect.DeepEqual(out[j], streamTest[j]) {
-					t.Errorf("#%d: have %v want %v", j, out[j], streamTest[j])
+					t.Errorf("#%d:\n\tgot:  %v\n\twant: %v", j, out[j], streamTest[j])
 				}
 			}
 			break
@@ -212,14 +278,14 @@ func TestDecoderBuffered(t *testing.T) {
 		t.Fatal(err)
 	}
 	if m.Name != "Gopher" {
-		t.Errorf("Name = %q; want Gopher", m.Name)
+		t.Errorf("Name = %s, want Gopher", m.Name)
 	}
 	rest, err := io.ReadAll(d.Buffered())
 	if err != nil {
 		t.Fatal(err)
 	}
-	if g, w := string(rest), " extra "; g != w {
-		t.Errorf("Remaining = %q; want %q", g, w)
+	if got, want := string(rest), " extra "; got != want {
+		t.Errorf("Remaining = %s, want %s", got, want)
 	}
 }
 
@@ -244,20 +310,20 @@ func TestRawMessage(t *testing.T) {
 		Y  float32
 	}
 	const raw = `["\u0056",null]`
-	const msg = `{"X":0.1,"Id":["\u0056",null],"Y":0.2}`
-	err := Unmarshal([]byte(msg), &data)
+	const want = `{"X":0.1,"Id":["\u0056",null],"Y":0.2}`
+	err := Unmarshal([]byte(want), &data)
 	if err != nil {
-		t.Fatalf("Unmarshal: %v", err)
+		t.Fatalf("Unmarshal error: %v", err)
 	}
 	if string([]byte(data.Id)) != raw {
-		t.Fatalf("Raw mismatch: have %#q want %#q", []byte(data.Id), raw)
+		t.Fatalf("Unmarshal:\n\tgot:  %s\n\twant: %s", []byte(data.Id), raw)
 	}
-	b, err := Marshal(&data)
+	got, err := Marshal(&data)
 	if err != nil {
-		t.Fatalf("Marshal: %v", err)
+		t.Fatalf("Marshal error: %v", err)
 	}
-	if string(b) != msg {
-		t.Fatalf("Marshal: have %#q want %#q", b, msg)
+	if string(got) != want {
+		t.Fatalf("Marshal:\n\tgot:  %s\n\twant: %s", got, want)
 	}
 }
 
@@ -268,174 +334,156 @@ func TestNullRawMessage(t *testing.T) {
 		IdPtr *RawMessage
 		Y     float32
 	}
-	const msg = `{"X":0.1,"Id":null,"IdPtr":null,"Y":0.2}`
-	err := Unmarshal([]byte(msg), &data)
+	const want = `{"X":0.1,"Id":null,"IdPtr":null,"Y":0.2}`
+	err := Unmarshal([]byte(want), &data)
 	if err != nil {
-		t.Fatalf("Unmarshal: %v", err)
+		t.Fatalf("Unmarshal error: %v", err)
 	}
 	if want, got := "null", string(data.Id); want != got {
-		t.Fatalf("Raw mismatch: have %q, want %q", got, want)
+		t.Fatalf("Unmarshal:\n\tgot:  %s\n\twant: %s", got, want)
 	}
 	if data.IdPtr != nil {
-		t.Fatalf("Raw pointer mismatch: have non-nil, want nil")
+		t.Fatalf("pointer mismatch: got non-nil, want nil")
 	}
-	b, err := Marshal(&data)
+	got, err := Marshal(&data)
 	if err != nil {
-		t.Fatalf("Marshal: %v", err)
+		t.Fatalf("Marshal error: %v", err)
 	}
-	if string(b) != msg {
-		t.Fatalf("Marshal: have %#q want %#q", b, msg)
+	if string(got) != want {
+		t.Fatalf("Marshal:\n\tgot:  %s\n\twant: %s", got, want)
 	}
 }
 
-var blockingTests = []string{
-	`{"x": 1}`,
-	`[1, 2, 3]`,
-}
-
 func TestBlocking(t *testing.T) {
-	for _, enc := range blockingTests {
-		r, w := net.Pipe()
-		go w.Write([]byte(enc))
-		var val any
-
-		// If Decode reads beyond what w.Write writes above,
-		// it will block, and the test will deadlock.
-		if err := NewDecoder(r).Decode(&val); err != nil {
-			t.Errorf("decoding %s: %v", enc, err)
-		}
-		r.Close()
-		w.Close()
+	tests := []struct {
+		CaseName
+		in string
+	}{
+		{Name(""), `{"x": 1}`},
+		{Name(""), `[1, 2, 3]`},
 	}
-}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			r, w := net.Pipe()
+			go w.Write([]byte(tt.in))
+			var val any
 
-func BenchmarkEncoderEncode(b *testing.B) {
-	b.ReportAllocs()
-	type T struct {
-		X, Y string
-	}
-	v := &T{"foo", "bar"}
-	b.RunParallel(func(pb *testing.PB) {
-		for pb.Next() {
-			if err := NewEncoder(io.Discard).Encode(v); err != nil {
-				b.Fatal(err)
+			// If Decode reads beyond what w.Write writes above,
+			// it will block, and the test will deadlock.
+			if err := NewDecoder(r).Decode(&val); err != nil {
+				t.Errorf("%s: NewDecoder(%s).Decode error: %v", tt.Where, tt.in, err)
 			}
-		}
-	})
-}
-
-type tokenStreamCase struct {
-	json      string
-	expTokens []any
+			r.Close()
+			w.Close()
+		})
+	}
 }
 
 type decodeThis struct {
 	v any
 }
 
-var tokenStreamCases = []tokenStreamCase{
-	// streaming token cases
-	{json: `10`, expTokens: []any{float64(10)}},
-	{json: ` [10] `, expTokens: []any{
-		Delim('['), float64(10), Delim(']')}},
-	{json: ` [false,10,"b"] `, expTokens: []any{
-		Delim('['), false, float64(10), "b", Delim(']')}},
-	{json: `{ "a": 1 }`, expTokens: []any{
-		Delim('{'), "a", float64(1), Delim('}')}},
-	{json: `{"a": 1, "b":"3"}`, expTokens: []any{
-		Delim('{'), "a", float64(1), "b", "3", Delim('}')}},
-	{json: ` [{"a": 1},{"a": 2}] `, expTokens: []any{
-		Delim('['),
-		Delim('{'), "a", float64(1), Delim('}'),
-		Delim('{'), "a", float64(2), Delim('}'),
-		Delim(']')}},
-	{json: `{"obj": {"a": 1}}`, expTokens: []any{
-		Delim('{'), "obj", Delim('{'), "a", float64(1), Delim('}'),
-		Delim('}')}},
-	{json: `{"obj": [{"a": 1}]}`, expTokens: []any{
-		Delim('{'), "obj", Delim('['),
-		Delim('{'), "a", float64(1), Delim('}'),
-		Delim(']'), Delim('}')}},
-
-	// streaming tokens with intermittent Decode()
-	{json: `{ "a": 1 }`, expTokens: []any{
-		Delim('{'), "a",
-		decodeThis{float64(1)},
-		Delim('}')}},
-	{json: ` [ { "a" : 1 } ] `, expTokens: []any{
-		Delim('['),
-		decodeThis{map[string]any{"a": float64(1)}},
-		Delim(']')}},
-	{json: ` [{"a": 1},{"a": 2}] `, expTokens: []any{
-		Delim('['),
-		decodeThis{map[string]any{"a": float64(1)}},
-		decodeThis{map[string]any{"a": float64(2)}},
-		Delim(']')}},
-	{json: `{ "obj" : [ { "a" : 1 } ] }`, expTokens: []any{
-		Delim('{'), "obj", Delim('['),
-		decodeThis{map[string]any{"a": float64(1)}},
-		Delim(']'), Delim('}')}},
-
-	{json: `{"obj": {"a": 1}}`, expTokens: []any{
-		Delim('{'), "obj",
-		decodeThis{map[string]any{"a": float64(1)}},
-		Delim('}')}},
-	{json: `{"obj": [{"a": 1}]}`, expTokens: []any{
-		Delim('{'), "obj",
-		decodeThis{[]any{
-			map[string]any{"a": float64(1)},
-		}},
-		Delim('}')}},
-	{json: ` [{"a": 1} {"a": 2}] `, expTokens: []any{
-		Delim('['),
-		decodeThis{map[string]any{"a": float64(1)}},
-		decodeThis{&SyntaxError{"expected comma after array element", 11}},
-	}},
-	{json: `{ "` + strings.Repeat("a", 513) + `" 1 }`, expTokens: []any{
-		Delim('{'), strings.Repeat("a", 513),
-		decodeThis{&SyntaxError{"expected colon after object key", 518}},
-	}},
-	{json: `{ "\a" }`, expTokens: []any{
-		Delim('{'),
-		&SyntaxError{"invalid character 'a' in string escape code", 3},
-	}},
-	{json: ` \a`, expTokens: []any{
-		&SyntaxError{"invalid character '\\\\' looking for beginning of value", 1},
-	}},
-}
-
 func TestDecodeInStream(t *testing.T) {
-	for ci, tcase := range tokenStreamCases {
+	tests := []struct {
+		CaseName
+		json      string
+		expTokens []any
+	}{
+		// streaming token cases
+		{CaseName: Name(""), json: `10`, expTokens: []any{float64(10)}},
+		{CaseName: Name(""), json: ` [10] `, expTokens: []any{
+			Delim('['), float64(10), Delim(']')}},
+		{CaseName: Name(""), json: ` [false,10,"b"] `, expTokens: []any{
+			Delim('['), false, float64(10), "b", Delim(']')}},
+		{CaseName: Name(""), json: `{ "a": 1 }`, expTokens: []any{
+			Delim('{'), "a", float64(1), Delim('}')}},
+		{CaseName: Name(""), json: `{"a": 1, "b":"3"}`, expTokens: []any{
+			Delim('{'), "a", float64(1), "b", "3", Delim('}')}},
+		{CaseName: Name(""), json: ` [{"a": 1},{"a": 2}] `, expTokens: []any{
+			Delim('['),
+			Delim('{'), "a", float64(1), Delim('}'),
+			Delim('{'), "a", float64(2), Delim('}'),
+			Delim(']')}},
+		{CaseName: Name(""), json: `{"obj": {"a": 1}}`, expTokens: []any{
+			Delim('{'), "obj", Delim('{'), "a", float64(1), Delim('}'),
+			Delim('}')}},
+		{CaseName: Name(""), json: `{"obj": [{"a": 1}]}`, expTokens: []any{
+			Delim('{'), "obj", Delim('['),
+			Delim('{'), "a", float64(1), Delim('}'),
+			Delim(']'), Delim('}')}},
 
-		dec := NewDecoder(strings.NewReader(tcase.json))
-		for i, etk := range tcase.expTokens {
+		// streaming tokens with intermittent Decode()
+		{CaseName: Name(""), json: `{ "a": 1 }`, expTokens: []any{
+			Delim('{'), "a",
+			decodeThis{float64(1)},
+			Delim('}')}},
+		{CaseName: Name(""), json: ` [ { "a" : 1 } ] `, expTokens: []any{
+			Delim('['),
+			decodeThis{map[string]any{"a": float64(1)}},
+			Delim(']')}},
+		{CaseName: Name(""), json: ` [{"a": 1},{"a": 2}] `, expTokens: []any{
+			Delim('['),
+			decodeThis{map[string]any{"a": float64(1)}},
+			decodeThis{map[string]any{"a": float64(2)}},
+			Delim(']')}},
+		{CaseName: Name(""), json: `{ "obj" : [ { "a" : 1 } ] }`, expTokens: []any{
+			Delim('{'), "obj", Delim('['),
+			decodeThis{map[string]any{"a": float64(1)}},
+			Delim(']'), Delim('}')}},
 
-			var tk any
-			var err error
+		{CaseName: Name(""), json: `{"obj": {"a": 1}}`, expTokens: []any{
+			Delim('{'), "obj",
+			decodeThis{map[string]any{"a": float64(1)}},
+			Delim('}')}},
+		{CaseName: Name(""), json: `{"obj": [{"a": 1}]}`, expTokens: []any{
+			Delim('{'), "obj",
+			decodeThis{[]any{
+				map[string]any{"a": float64(1)},
+			}},
+			Delim('}')}},
+		{CaseName: Name(""), json: ` [{"a": 1} {"a": 2}] `, expTokens: []any{
+			Delim('['),
+			decodeThis{map[string]any{"a": float64(1)}},
+			decodeThis{&SyntaxError{"expected comma after array element", 11}},
+		}},
+		{CaseName: Name(""), json: `{ "` + strings.Repeat("a", 513) + `" 1 }`, expTokens: []any{
+			Delim('{'), strings.Repeat("a", 513),
+			decodeThis{&SyntaxError{"expected colon after object key", 518}},
+		}},
+		{CaseName: Name(""), json: `{ "\a" }`, expTokens: []any{
+			Delim('{'),
+			&SyntaxError{"invalid character 'a' in string escape code", 3},
+		}},
+		{CaseName: Name(""), json: ` \a`, expTokens: []any{
+			&SyntaxError{"invalid character '\\\\' looking for beginning of value", 1},
+		}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			dec := NewDecoder(strings.NewReader(tt.json))
+			for i, want := range tt.expTokens {
+				var got any
+				var err error
 
-			if dt, ok := etk.(decodeThis); ok {
-				etk = dt.v
-				err = dec.Decode(&tk)
-			} else {
-				tk, err = dec.Token()
-			}
-			if experr, ok := etk.(error); ok {
-				if err == nil || !reflect.DeepEqual(err, experr) {
-					t.Errorf("case %v: Expected error %#v in %q, but was %#v", ci, experr, tcase.json, err)
+				if dt, ok := want.(decodeThis); ok {
+					want = dt.v
+					err = dec.Decode(&got)
+				} else {
+					got, err = dec.Token()
+				}
+				if errWant, ok := want.(error); ok {
+					if err == nil || !reflect.DeepEqual(err, errWant) {
+						t.Fatalf("%s:\n\tinput: %s\n\tgot error:  %v\n\twant error: %v", tt.Where, tt.json, err, errWant)
+					}
+					break
+				} else if err != nil {
+					t.Fatalf("%s:\n\tinput: %s\n\tgot error:  %v\n\twant error: nil", tt.Where, tt.json, err)
+				}
+				if !reflect.DeepEqual(got, want) {
+					t.Fatalf("%s: token %d:\n\tinput: %s\n\tgot:  %T(%v)\n\twant: %T(%v)", tt.Where, i, tt.json, got, got, want, want)
 				}
-				break
-			} else if err == io.EOF {
-				t.Errorf("case %v: Unexpected EOF in %q", ci, tcase.json)
-				break
-			} else if err != nil {
-				t.Errorf("case %v: Unexpected error '%#v' in %q", ci, err, tcase.json)
-				break
 			}
-			if !reflect.DeepEqual(tk, etk) {
-				t.Errorf(`case %v: %q @ %v expected %T(%v) was %T(%v)`, ci, tcase.json, i, etk, etk, tk, tk)
-				break
-			}
-		}
+		})
 	}
 }
 
@@ -449,7 +497,7 @@ func TestHTTPDecoding(t *testing.T) {
 	defer ts.Close()
 	res, err := http.Get(ts.URL)
 	if err != nil {
-		log.Fatalf("GET failed: %v", err)
+		log.Fatalf("http.Get error: %v", err)
 	}
 	defer res.Body.Close()
 
@@ -460,15 +508,15 @@ func TestHTTPDecoding(t *testing.T) {
 	d := NewDecoder(res.Body)
 	err = d.Decode(&foo)
 	if err != nil {
-		t.Fatalf("Decode: %v", err)
+		t.Fatalf("Decode error: %v", err)
 	}
 	if foo.Foo != "bar" {
-		t.Errorf("decoded %q; want \"bar\"", foo.Foo)
+		t.Errorf(`Decode: got %q, want "bar"`, foo.Foo)
 	}
 
 	// make sure we get the EOF the second time
 	err = d.Decode(&foo)
 	if err != io.EOF {
-		t.Errorf("err = %v; want io.EOF", err)
+		t.Errorf("Decode error:\n\tgot:  %v\n\twant: io.EOF", err)
 	}
 }

gojson/tagkey_test.go

@@ -72,49 +72,50 @@ type unicodeTag struct {
 	W string `json:"Ελλάδα"`
 }
 
-var structTagObjectKeyTests = []struct {
-	raw   any
-	value string
-	key   string
-}{
-	{basicLatin2xTag{"2x"}, "2x", "$%-/"},
-	{basicLatin3xTag{"3x"}, "3x", "0123456789"},
-	{basicLatin4xTag{"4x"}, "4x", "ABCDEFGHIJKLMO"},
-	{basicLatin5xTag{"5x"}, "5x", "PQRSTUVWXYZ_"},
-	{basicLatin6xTag{"6x"}, "6x", "abcdefghijklmno"},
-	{basicLatin7xTag{"7x"}, "7x", "pqrstuvwxyz"},
-	{miscPlaneTag{"いろはにほへと"}, "いろはにほへと", "色は匂へど"},
-	{dashTag{"foo"}, "foo", "-"},
-	{emptyTag{"Pour Moi"}, "Pour Moi", "W"},
-	{misnamedTag{"Animal Kingdom"}, "Animal Kingdom", "X"},
-	{badFormatTag{"Orfevre"}, "Orfevre", "Y"},
-	{badCodeTag{"Reliable Man"}, "Reliable Man", "Z"},
-	{percentSlashTag{"brut"}, "brut", "text/html%"},
-	{punctuationTag{"Union Rags"}, "Union Rags", "!#$%&()*+-./:;<=>?@[]^_{|}~ "},
-	{spaceTag{"Perreddu"}, "Perreddu", "With space"},
-	{unicodeTag{"Loukanikos"}, "Loukanikos", "Ελλάδα"},
-}
-
 func TestStructTagObjectKey(t *testing.T) {
-	for _, tt := range structTagObjectKeyTests {
-		b, err := Marshal(tt.raw)
-		if err != nil {
-			t.Fatalf("Marshal(%#q) failed: %v", tt.raw, err)
-		}
-		var f any
-		err = Unmarshal(b, &f)
-		if err != nil {
-			t.Fatalf("Unmarshal(%#q) failed: %v", b, err)
-		}
-		for i, v := range f.(map[string]any) {
-			switch i {
-			case tt.key:
-				if s, ok := v.(string); !ok || s != tt.value {
-					t.Fatalf("Unexpected value: %#q, want %v", s, tt.value)
-				}
-			default:
-				t.Fatalf("Unexpected key: %#q, from %#q", i, b)
+	tests := []struct {
+		CaseName
+		raw   any
+		value string
+		key   string
+	}{
+		{Name(""), basicLatin2xTag{"2x"}, "2x", "$%-/"},
+		{Name(""), basicLatin3xTag{"3x"}, "3x", "0123456789"},
+		{Name(""), basicLatin4xTag{"4x"}, "4x", "ABCDEFGHIJKLMO"},
+		{Name(""), basicLatin5xTag{"5x"}, "5x", "PQRSTUVWXYZ_"},
+		{Name(""), basicLatin6xTag{"6x"}, "6x", "abcdefghijklmno"},
+		{Name(""), basicLatin7xTag{"7x"}, "7x", "pqrstuvwxyz"},
+		{Name(""), miscPlaneTag{"いろはにほへと"}, "いろはにほへと", "色は匂へど"},
+		{Name(""), dashTag{"foo"}, "foo", "-"},
+		{Name(""), emptyTag{"Pour Moi"}, "Pour Moi", "W"},
+		{Name(""), misnamedTag{"Animal Kingdom"}, "Animal Kingdom", "X"},
+		{Name(""), badFormatTag{"Orfevre"}, "Orfevre", "Y"},
+		{Name(""), badCodeTag{"Reliable Man"}, "Reliable Man", "Z"},
+		{Name(""), percentSlashTag{"brut"}, "brut", "text/html%"},
+		{Name(""), punctuationTag{"Union Rags"}, "Union Rags", "!#$%&()*+-./:;<=>?@[]^_{|}~ "},
+		{Name(""), spaceTag{"Perreddu"}, "Perreddu", "With space"},
+		{Name(""), unicodeTag{"Loukanikos"}, "Loukanikos", "Ελλάδα"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.Name, func(t *testing.T) {
+			b, err := Marshal(tt.raw)
+			if err != nil {
+				t.Fatalf("%s: Marshal error: %v", tt.Where, err)
 			}
-		}
+			var f any
+			err = Unmarshal(b, &f)
+			if err != nil {
+				t.Fatalf("%s: Unmarshal error: %v", tt.Where, err)
+			}
+			for k, v := range f.(map[string]any) {
+				if k == tt.key {
+					if s, ok := v.(string); !ok || s != tt.value {
+						t.Fatalf("%s: Unmarshal(%#q) value:\n\tgot:  %q\n\twant: %q", tt.Where, b, s, tt.value)
+					}
+				} else {
+					t.Fatalf("%s: Unmarshal(%#q): unexpected key: %q", tt.Where, b, k)
+				}
+			}
+		})
 	}
 }

gojson/tags_test.go

@@ -22,7 +22,7 @@ func TestTagParsing(t *testing.T) {
 		{"bar", false},
 	} {
 		if opts.Contains(tt.opt) != tt.want {
-			t.Errorf("Contains(%q) = %v", tt.opt, !tt.want)
+			t.Errorf("Contains(%q) = %v, want %v", tt.opt, !tt.want, tt.want)
 		}
 	}
 }

googleapi/mimeMessage.go

@@ -1,7 +1,7 @@
 package googleapi
 
 import (
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"mime"
 	"strings"
 	"time"

googleapi/mimeMessage_test.go

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

googleapi/oAuth.go

@@ -3,9 +3,9 @@ package googleapi
 import (
 	"encoding/json"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
-	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/timeext"
 	"io"
 	"net/http"
 	"sync"

googleapi/sendMail.go

@@ -6,9 +6,9 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"gogs.mikescher.com/BlackForestBytes/goext"
-	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
-	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"git.blackforestbytes.com/BlackForestBytes/goext"
+	"git.blackforestbytes.com/BlackForestBytes/goext/exerr"
+	"git.blackforestbytes.com/BlackForestBytes/goext/langext"
 	"io"
 	"net/http"
 )