v0.0.421

bfcodegen/id-generate.go

@@ -38,7 +38,7 @@ var rexIDChecksumConst = rext.W(regexp.MustCompile(`const ChecksumIDGenerator =
 //go:embed id-generate.template
 var templateIDGenerateText string
 
-func GenerateIDSpecs(sourceDir string, destFile string, opt *IDGenOptions) error {
+func GenerateIDSpecs(sourceDir string, destFile string, opt IDGenOptions) error {
 
 	debugOutput := langext.Coalesce(opt.DebugOutput, false)
 

bfcodegen/id-generate_test.go

@@ -34,10 +34,10 @@ func TestGenerateIDSpecs(t *testing.T) {
 	_, err = cmdext.Runner("tar").Arg("-xvzf").Arg(tmpFile).Arg("-C").Arg(tmpDir).FailOnExitCode().FailOnTimeout().Timeout(time.Minute).Run()
 	tst.AssertNoErr(t, err)
 
-	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go", &IDGenOptions{DebugOutput: langext.PTrue})
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go", IDGenOptions{DebugOutput: langext.PTrue})
 	tst.AssertNoErr(t, err)
 
-	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go", &IDGenOptions{DebugOutput: langext.PTrue})
+	err = GenerateIDSpecs(tmpDir, tmpDir+"/id_gen.go", IDGenOptions{DebugOutput: langext.PTrue})
 	tst.AssertNoErr(t, err)
 
 	fmt.Println()

dataext/optional.go

@@ -0,0 +1,62 @@
+package dataext
+
+import (
+	"encoding/json"
+	"errors"
+)
+
+type JsonOpt[T any] struct {
+	isSet bool
+	value T
+}
+
+// MarshalJSON returns m as the JSON encoding of m.
+func (m JsonOpt[T]) MarshalJSON() ([]byte, error) {
+	if !m.isSet {
+		return []byte("null"), nil // actually this would be undefined - but undefined is not valid JSON
+	}
+
+	if m.value == nil {
+		return []byte("null"), nil
+	}
+
+	return json.Marshal(m.value)
+}
+
+// UnmarshalJSON sets *m to a copy of data.
+func (m *JsonOpt[T]) UnmarshalJSON(data []byte) error {
+	if m == nil {
+		return errors.New("JsonOpt: UnmarshalJSON on nil pointer")
+	}
+
+	return json.Unmarshal(data, &m.value)
+}
+
+func (m JsonOpt[T]) IsSet() bool {
+	return m.isSet
+}
+
+func (m JsonOpt[T]) IsUnset() bool {
+	return !m.isSet
+}
+
+func (m JsonOpt[T]) Value() (T, bool) {
+	if !m.isSet {
+		return *new(T), false
+	}
+	return m.value, true
+}
+
+func (m JsonOpt[T]) ValueOrNil() *T {
+	if !m.isSet {
+		return nil
+	}
+	return &m.value
+}
+
+func (m JsonOpt[T]) MustValue() T {
+	if !m.isSet {
+		panic("value not set")
+	}
+	return m.value
+}

ginext/engine.go

@@ -39,6 +39,7 @@ 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
@@ -51,7 +52,7 @@ func NewEngine(opt Options) *GinWrapper {
 
 	wrapper := &GinWrapper{
 		engine:                engine,
-		suppressGinLogs:       false,
+		suppressGinLogs:       langext.Coalesce(opt.SuppressGinLogs, false),
 		allowCors:             langext.Coalesce(opt.AllowCors, false),
 		ginDebug:              langext.Coalesce(opt.GinDebug, true),
 		bufferBody:            langext.Coalesce(opt.BufferBody, false),
@@ -73,12 +74,12 @@ func NewEngine(opt Options) *GinWrapper {
 	if !wrapper.ginDebug {
 		gin.SetMode(gin.ReleaseMode)
 
-		ginlogger := gin.Logger()
+		if !wrapper.suppressGinLogs {
-		engine.Use(func(context *gin.Context) {
+			ginlogger := gin.Logger()
-			if !wrapper.suppressGinLogs {
+			engine.Use(func(context *gin.Context) {
 				ginlogger(context)
-			}
+			})
-		})
+		}
 	} else {
 		gin.SetMode(gin.DebugMode)
 	}
@@ -193,3 +194,9 @@ func (w *GinWrapper) ServeHTTP(req *http.Request) *httptest.ResponseRecorder {
 	w.engine.ServeHTTP(respRec, req)
 	return respRec
 }
+
+// ForwardRequest manually inserts a request into this router
+// = behaves as if the request came from the outside (and writes the response to `writer`)
+func (w *GinWrapper) ForwardRequest(writer http.ResponseWriter, req *http.Request) {
+	w.engine.ServeHTTP(writer, req)
+}

go.mod

@@ -1,6 +1,6 @@
 module gogs.mikescher.com/BlackForestBytes/goext
 
-go 1.21
+go 1.22
 
 require (
 	github.com/gin-gonic/gin v1.9.1
@@ -15,7 +15,7 @@ require (
 )
 
 require (
-	github.com/bytedance/sonic v1.11.2 // indirect
+	github.com/bytedance/sonic v1.11.3 // indirect
 	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
 	github.com/chenzhuoyu/iasm v0.9.1 // indirect
 	github.com/dustin/go-humanize v1.0.1 // indirect
@@ -36,7 +36,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/montanaflynn/stats v0.7.1 // indirect
-	github.com/pelletier/go-toml/v2 v2.1.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.0 // 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

go.sum

@@ -8,6 +8,8 @@ github.com/bytedance/sonic v1.11.1 h1:JC0+6c9FoWYYxakaoa+c5QTtJeiSZNeByOBhXtAFSn
 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/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=
@@ -102,6 +104,8 @@ github.com/montanaflynn/stats v0.7.1 h1:etflOAAHORrCC44V+aR6Ftzort912ZU+YLiSTuV8
 github.com/montanaflynn/stats v0.7.1/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
 github.com/pelletier/go-toml/v2 v2.1.1 h1:LWAJwfNvjQZCFIDKWYQaM62NcYeYViCmWIwmOStowAI=
 github.com/pelletier/go-toml/v2 v2.1.1/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
+github.com/pelletier/go-toml/v2 v2.2.0 h1:QLgLl2yMN7N+ruc31VynXs1vhMZa7CeHHejIeBAsoHo=
+github.com/pelletier/go-toml/v2 v2.2.0/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -116,6 +120,7 @@ github.com/rs/zerolog v1.32.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWR
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -124,6 +129,8 @@ github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.404"
+const GoextVersion = "0.0.421"
 
-const GoextVersionTimestamp = "2024-03-10T15:25:30+0100"
+const GoextVersionTimestamp = "2024-03-23T20:28:51+0100"

gojson/decode.go

@@ -217,6 +217,7 @@ type decodeState struct {
 	savedError            error
 	useNumber             bool
 	disallowUnknownFields bool
+	tagkey                *string
 }
 
 // readIndex returns the position of the last byte read.
@@ -652,7 +653,11 @@ func (d *decodeState) object(v reflect.Value) error {
 			v.Set(reflect.MakeMap(t))
 		}
 	case reflect.Struct:
-		fields = cachedTypeFields(t)
+		tagkey := "json"
+		if d.tagkey != nil {
+			tagkey = *d.tagkey
+		}
+		fields = cachedTypeFields(t, tagkey)
 		// ok
 	default:
 		d.saveError(&UnmarshalTypeError{Value: "object", Type: t, Offset: int64(d.off)})

gojson/encode.go

@@ -382,7 +382,12 @@ func isEmptyValue(v reflect.Value) bool {
 }
 
 func (e *encodeState) reflectValue(v reflect.Value, opts encOpts) {
-	valueEncoder(v)(e, v, opts)
+	tagkey := "json"
+	if opts.tagkey != nil {
+		tagkey = *opts.tagkey
+	}
+
+	valueEncoder(v, tagkey)(e, v, opts)
 }
 
 type encOpts struct {
@@ -397,20 +402,22 @@ type encOpts struct {
 	// filter matches jsonfilter tag of struct
 	// marshals if no jsonfilter is set or otherwise if jsonfilter has the filter value
 	filter *string
+	// use different tag instead of "json"
+	tagkey *string
 }
 
 type encoderFunc func(e *encodeState, v reflect.Value, opts encOpts)
 
 var encoderCache sync.Map // map[reflect.Type]encoderFunc
 
-func valueEncoder(v reflect.Value) encoderFunc {
+func valueEncoder(v reflect.Value, tagkey string) encoderFunc {
 	if !v.IsValid() {
 		return invalidValueEncoder
 	}
-	return typeEncoder(v.Type())
+	return typeEncoder(v.Type(), tagkey)
 }
 
-func typeEncoder(t reflect.Type) encoderFunc {
+func typeEncoder(t reflect.Type, tagkey string) encoderFunc {
 	if fi, ok := encoderCache.Load(t); ok {
 		return fi.(encoderFunc)
 	}
@@ -433,7 +440,7 @@ func typeEncoder(t reflect.Type) encoderFunc {
 	}
 
 	// Compute the real encoder and replace the indirect func with it.
-	f = newTypeEncoder(t, true)
+	f = newTypeEncoder(t, true, tagkey)
 	wg.Done()
 	encoderCache.Store(t, f)
 	return f
@@ -446,19 +453,19 @@ var (
 
 // newTypeEncoder constructs an encoderFunc for a type.
 // The returned encoder only checks CanAddr when allowAddr is true.
-func newTypeEncoder(t reflect.Type, allowAddr bool) encoderFunc {
+func newTypeEncoder(t reflect.Type, allowAddr bool, tagkey string) encoderFunc {
 	// If we have a non-pointer value whose type implements
 	// Marshaler with a value receiver, then we're better off taking
 	// the address of the value - otherwise we end up with an
 	// allocation as we cast the value to an interface.
 	if t.Kind() != reflect.Pointer && allowAddr && reflect.PointerTo(t).Implements(marshalerType) {
-		return newCondAddrEncoder(addrMarshalerEncoder, newTypeEncoder(t, false))
+		return newCondAddrEncoder(addrMarshalerEncoder, newTypeEncoder(t, false, tagkey))
 	}
 	if t.Implements(marshalerType) {
 		return marshalerEncoder
 	}
 	if t.Kind() != reflect.Pointer && allowAddr && reflect.PointerTo(t).Implements(textMarshalerType) {
-		return newCondAddrEncoder(addrTextMarshalerEncoder, newTypeEncoder(t, false))
+		return newCondAddrEncoder(addrTextMarshalerEncoder, newTypeEncoder(t, false, tagkey))
 	}
 	if t.Implements(textMarshalerType) {
 		return textMarshalerEncoder
@@ -480,15 +487,15 @@ func newTypeEncoder(t reflect.Type, allowAddr bool) encoderFunc {
 	case reflect.Interface:
 		return interfaceEncoder
 	case reflect.Struct:
-		return newStructEncoder(t)
+		return newStructEncoder(t, tagkey)
 	case reflect.Map:
-		return newMapEncoder(t)
+		return newMapEncoder(t, tagkey)
 	case reflect.Slice:
-		return newSliceEncoder(t)
+		return newSliceEncoder(t, tagkey)
 	case reflect.Array:
-		return newArrayEncoder(t)
+		return newArrayEncoder(t, tagkey)
 	case reflect.Pointer:
-		return newPtrEncoder(t)
+		return newPtrEncoder(t, tagkey)
 	default:
 		return unsupportedTypeEncoder
 	}
@@ -801,8 +808,8 @@ FieldLoop:
 	}
 }
 
-func newStructEncoder(t reflect.Type) encoderFunc {
+func newStructEncoder(t reflect.Type, tagkey string) encoderFunc {
-	se := structEncoder{fields: cachedTypeFields(t)}
+	se := structEncoder{fields: cachedTypeFields(t, tagkey)}
 	return se.encode
 }
 
@@ -855,7 +862,7 @@ func (me mapEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	e.ptrLevel--
 }
 
-func newMapEncoder(t reflect.Type) encoderFunc {
+func newMapEncoder(t reflect.Type, tagkey string) encoderFunc {
 	switch t.Key().Kind() {
 	case reflect.String,
 		reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
@@ -865,7 +872,7 @@ func newMapEncoder(t reflect.Type) encoderFunc {
 			return unsupportedTypeEncoder
 		}
 	}
-	me := mapEncoder{typeEncoder(t.Elem())}
+	me := mapEncoder{typeEncoder(t.Elem(), tagkey)}
 	return me.encode
 }
 
@@ -936,7 +943,7 @@ func (se sliceEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	e.ptrLevel--
 }
 
-func newSliceEncoder(t reflect.Type) encoderFunc {
+func newSliceEncoder(t reflect.Type, tagkey string) encoderFunc {
 	// Byte slices get special treatment; arrays don't.
 	if t.Elem().Kind() == reflect.Uint8 {
 		p := reflect.PointerTo(t.Elem())
@@ -944,7 +951,7 @@ func newSliceEncoder(t reflect.Type) encoderFunc {
 			return encodeByteSlice
 		}
 	}
-	enc := sliceEncoder{newArrayEncoder(t)}
+	enc := sliceEncoder{newArrayEncoder(t, tagkey)}
 	return enc.encode
 }
 
@@ -964,8 +971,8 @@ func (ae arrayEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	e.WriteByte(']')
 }
 
-func newArrayEncoder(t reflect.Type) encoderFunc {
+func newArrayEncoder(t reflect.Type, tagkey string) encoderFunc {
-	enc := arrayEncoder{typeEncoder(t.Elem())}
+	enc := arrayEncoder{typeEncoder(t.Elem(), tagkey)}
 	return enc.encode
 }
 
@@ -992,8 +999,8 @@ func (pe ptrEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
 	e.ptrLevel--
 }
 
-func newPtrEncoder(t reflect.Type) encoderFunc {
+func newPtrEncoder(t reflect.Type, tagkey string) encoderFunc {
-	enc := ptrEncoder{typeEncoder(t.Elem())}
+	enc := ptrEncoder{typeEncoder(t.Elem(), tagkey)}
 	return enc.encode
 }
 
@@ -1270,7 +1277,7 @@ func (x byIndex) Less(i, j int) bool {
 // 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.
-func typeFields(t reflect.Type) structFields {
+func typeFields(t reflect.Type, tagkey string) structFields {
 	// Anonymous fields to explore at the current level and the next.
 	current := []field{}
 	next := []field{{typ: t}}
@@ -1315,7 +1322,7 @@ func typeFields(t reflect.Type) structFields {
 					// Ignore unexported non-embedded fields.
 					continue
 				}
-				tag := sf.Tag.Get("json")
+				tag := sf.Tag.Get(tagkey)
 				if tag == "-" {
 					continue
 				}
@@ -1449,7 +1456,7 @@ func typeFields(t reflect.Type) structFields {
 
 	for i := range fields {
 		f := &fields[i]
-		f.encoder = typeEncoder(typeByIndex(t, f.index))
+		f.encoder = typeEncoder(typeByIndex(t, f.index), tagkey)
 	}
 	nameIndex := make(map[string]int, len(fields))
 	for i, field := range fields {
@@ -1474,13 +1481,26 @@ func dominantField(fields []field) (field, bool) {
 	return fields[0], true
 }
 
-var fieldCache sync.Map // map[reflect.Type]structFields
+var fieldCache sync.Map // map[string]map[reflect.Type]structFields
 
 // cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
-func cachedTypeFields(t reflect.Type) structFields {
+func cachedTypeFields(t reflect.Type, tagkey string) structFields {
-	if f, ok := fieldCache.Load(t); ok {
+	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)
+
 		return f.(structFields)
 	}
-	f, _ := fieldCache.LoadOrStore(t, typeFields(t))
+
-	return f.(structFields)
 }

gojson/stream.go

@@ -41,6 +41,9 @@ func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
 // non-ignored, exported fields in the destination.
 func (dec *Decoder) DisallowUnknownFields() { dec.d.disallowUnknownFields = true }
 
+// TagKey sets a different TagKey (instead of "json")
+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.
 //

langext/coalesce.go

@@ -5,12 +5,76 @@ import (
 	"time"
 )
 
-func Coalesce[T any](v *T, def T) T {
+func Coalesce[T any](v1 *T, def T) T {
-	if v == nil {
+	if v1 != nil {
-		return def
+		return *v1
-	} else {
-		return *v
 	}
+
+	return def
+}
+
+func CoalesceOpt[T any](v1 *T, v2 *T) *T {
+	if v1 != nil {
+		return v1
+	}
+
+	return v2
+}
+
+func Coalesce3[T any](v1 *T, v2 *T, def T) T {
+	if v1 != nil {
+		return *v1
+	}
+
+	if v2 != nil {
+		return *v2
+	}
+
+	return def
+}
+
+func Coalesce3Opt[T any](v1 *T, v2 *T, v3 *T) *T {
+	if v1 != nil {
+		return v1
+	}
+
+	if v2 != nil {
+		return v2
+	}
+
+	return v3
+}
+
+func Coalesce4[T any](v1 *T, v2 *T, v3 *T, def T) T {
+	if v1 != nil {
+		return *v1
+	}
+
+	if v2 != nil {
+		return *v2
+	}
+
+	if v3 != nil {
+		return *v3
+	}
+
+	return def
+}
+
+func Coalesce4Opt[T any](v1 *T, v2 *T, v3 *T, v4 *T) *T {
+	if v1 != nil {
+		return v1
+	}
+
+	if v2 != nil {
+		return v2
+	}
+
+	if v3 != nil {
+		return v3
+	}
+
+	return v4
 }
 
 func CoalesceString(s *string, def string) string {

reflectext/convertToMap.go

@@ -1,19 +1,30 @@
 package reflectext
 
-import "reflect"
+import (
+	"encoding/json"
+	"reflect"
+)
 
-func ConvertStructToMap(v any) any {
+type ConvertStructToMapOpt struct {
-	return reflectToMap(reflect.ValueOf(v))
+	KeepJsonMarshalTypes bool
 }
 
-func reflectToMap(fv reflect.Value) any {
+func ConvertStructToMap(v any, opts ...ConvertStructToMapOpt) any {
+	opt := ConvertStructToMapOpt{}
+	if len(opts) > 0 {
+		opt = opts[0]
+	}
+	return reflectToMap(reflect.ValueOf(v), opt)
+}
+
+func reflectToMap(fv reflect.Value, opt ConvertStructToMapOpt) any {
 
 	if fv.Kind() == reflect.Ptr {
 
 		if fv.IsNil() {
 			return nil
 		} else {
-			return reflectToMap(fv.Elem())
+			return reflectToMap(fv.Elem(), opt)
 		}
 
 	}
@@ -30,7 +41,7 @@ func reflectToMap(fv reflect.Value) any {
 		arrlen := fv.Len()
 		arr := make([]any, arrlen)
 		for i := 0; i < arrlen; i++ {
-			arr[i] = reflectToMap(fv.Index(i))
+			arr[i] = reflectToMap(fv.Index(i), opt)
 		}
 		return arr
 
@@ -41,7 +52,7 @@ func reflectToMap(fv reflect.Value) any {
 		arrlen := fv.Len()
 		arr := make([]any, arrlen)
 		for i := 0; i < arrlen; i++ {
-			arr[i] = reflectToMap(fv.Index(i))
+			arr[i] = reflectToMap(fv.Index(i), opt)
 		}
 		return arr
 
@@ -56,11 +67,15 @@ func reflectToMap(fv reflect.Value) any {
 
 	if fv.Kind() == reflect.Struct {
 
+		if opt.KeepJsonMarshalTypes && fv.Type().Implements(reflect.TypeFor[json.Marshaler]()) {
+			return fv.Interface()
+		}
+
 		res := make(map[string]any)
 
 		for i := 0; i < fv.NumField(); i++ {
 			if fv.Type().Field(i).IsExported() {
-				res[fv.Type().Field(i).Name] = reflectToMap(fv.Field(i))
+				res[fv.Type().Field(i).Name] = reflectToMap(fv.Field(i), opt)
 			}
 		}
 

rfctime/date.go

@@ -67,36 +67,20 @@ func (t *Date) UnmarshalJSON(data []byte) error {
 	if err := json.Unmarshal(data, &str); err != nil {
 		return err
 	}
-	t0, err := time.Parse(t.FormatStr(), str)
+	return t.ParseString(str)
-	if err != nil {
-		return err
-	}
-	t.Year = t0.Year()
-	t.Month = int(t0.Month())
-	t.Day = t0.Day()
-	return nil
 }
 
 func (t Date) MarshalJSON() ([]byte, error) {
-	str := t.TimeUTC().Format(t.FormatStr())
+	str := t.String()
 	return json.Marshal(str)
 }
 
 func (t Date) MarshalText() ([]byte, error) {
-	b := make([]byte, 0, len(t.FormatStr()))
+	return []byte(t.String()), nil
-	return t.TimeUTC().AppendFormat(b, t.FormatStr()), nil
 }
 
 func (t *Date) UnmarshalText(data []byte) error {
-	var err error
+	return t.ParseString(string(data))
-	v, err := time.Parse(t.FormatStr(), string(data))
-	if err != nil {
-		return err
-	}
-	t.Year = v.Year()
-	t.Month = int(v.Month())
-	t.Day = v.Day()
-	return nil
 }
 
 func (t *Date) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
@@ -118,6 +102,13 @@ func (t *Date) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
 		return err
 	}
 
+	if tt == "" {
+		t.Year = 0
+		t.Month = 0
+		t.Day = 0
+		return nil
+	}
+
 	v, err := time.Parse(t.FormatStr(), tt)
 	if err != nil {
 		return err
@@ -130,7 +121,10 @@ func (t *Date) UnmarshalBSONValue(bt bsontype.Type, data []byte) error {
 }
 
 func (t Date) MarshalBSONValue() (bsontype.Type, []byte, error) {
-	return bson.MarshalValue(t.TimeUTC().Format(t.FormatStr()))
+	if t.IsZero() {
+		return bson.MarshalValue("")
+	}
+	return bson.MarshalValue(t.String())
 }
 
 func (t Date) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
@@ -166,7 +160,7 @@ func (t Date) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val
 }
 
 func (t Date) Serialize() string {
-	return t.TimeUTC().Format(t.FormatStr())
+	return t.String()
 }
 
 func (t Date) FormatStr() string {
@@ -230,11 +224,11 @@ func (t *Date) ParseString(v string) error {
 	if err != nil {
 		return errors.New("invalid date format: " + v + ": " + err.Error())
 	}
-	month, err := strconv.ParseInt(split[0], 10, 32)
+	month, err := strconv.ParseInt(split[1], 10, 32)
 	if err != nil {
 		return errors.New("invalid date format: " + v + ": " + err.Error())
 	}
-	day, err := strconv.ParseInt(split[0], 10, 32)
+	day, err := strconv.ParseInt(split[2], 10, 32)
 	if err != nil {
 		return errors.New("invalid date format: " + v + ": " + err.Error())
 	}
@@ -258,6 +252,10 @@ func (t *Date) ParseString(v string) error {
 	return nil
 }
 
+func (t Date) IsZero() bool {
+	return t.Year == 0 && t.Month == 0 && t.Day == 0
+}
+
 func NewDate(t time.Time) Date {
 	return Date{
 		Year:  t.Year(),

sq/filter.go

@@ -47,3 +47,10 @@ func NewSimplePaginateFilter(filterClause string, filterParams PP, sort []Filter
 		},
 	}
 }
+
+func NewEmptyPaginateFilter() PaginateFilter {
+	return genericPaginateFilter{
+		sql:  func(params PP) (string, string, []string) { return "1=1", "", nil },
+		sort: func() []FilterSort { return make([]FilterSort, 0) },
+	}
+}

sq/list.go

@@ -0,0 +1,48 @@
+package sq
+
+import (
+	"context"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/exerr"
+)
+
+func Iterate[TData any](ctx context.Context, q Queryable, table string, filter PaginateFilter, scanMode StructScanMode, scanSec StructScanSafety, page int, limit *int, consumer func(ctx context.Context, v TData) error) (int, error) {
+	if filter == nil {
+		filter = NewEmptyPaginateFilter()
+	}
+
+	prepParams := PP{}
+
+	sortOrder := filter.Sort()
+	sortCond := ""
+	if len(sortOrder) > 0 {
+		sortCond = "ORDER BY "
+		for i, v := range sortOrder {
+			if i > 0 {
+				sortCond += ", "
+			}
+			sortCond += v.Field + " " + string(v.Direction)
+		}
+	}
+
+	pageCond := ""
+	if limit != nil {
+		pageCond += fmt.Sprintf("LIMIT :%s OFFSET :%s", prepParams.Add(*limit+1), prepParams.Add(*limit*(page-1)))
+	}
+
+	filterCond, joinCond, joinTables := filter.SQL(prepParams)
+
+	selectCond := table + ".*"
+	for _, v := range joinTables {
+		selectCond += ", " + v + ".*"
+	}
+
+	sqlQueryData := "SELECT " + selectCond + " FROM " + table + " " + joinCond + " WHERE ( " + filterCond + " ) " + sortCond + " " + pageCond
+
+	rows, err := q.Query(ctx, sqlQueryData, prepParams)
+	if err != nil {
+		return 0, exerr.Wrap(err, "failed to list paginated entries from DB").Str("table", table).Any("filter", filter).Int("page", page).Any("limit", limit).Build()
+	}
+
+	return IterateAll[TData](ctx, q, rows, scanMode, scanSec, true, consumer)
+}

sq/paginate.go

@@ -9,6 +9,10 @@ import (
 )
 
 func Paginate[TData any](ctx context.Context, q Queryable, table string, filter PaginateFilter, scanMode StructScanMode, scanSec StructScanSafety, page int, limit *int) ([]TData, pag.Pagination, error) {
+	if filter == nil {
+		filter = NewEmptyPaginateFilter()
+	}
+
 	prepParams := PP{}
 
 	sortOrder := filter.Sort()
@@ -90,6 +94,10 @@ func Paginate[TData any](ctx context.Context, q Queryable, table string, filter
 }
 
 func Count(ctx context.Context, q Queryable, table string, filter PaginateFilter) (int, error) {
+	if filter == nil {
+		filter = NewEmptyPaginateFilter()
+	}
+
 	prepParams := PP{}
 
 	filterCond, joinCond, _ := filter.SQL(prepParams)

sq/scanner.go

@@ -333,3 +333,79 @@ func ScanAll[TData any](ctx context.Context, q Queryable, rows *sqlx.Rows, mode
 	}
 	return res, nil
 }
+
+func IterateAll[TData any](ctx context.Context, q Queryable, rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool, consumer func(ctx context.Context, v TData) error) (int, error) {
+	var strscan *StructScanner
+
+	if sec == Safe {
+		strscan = NewStructScanner(rows, false)
+		var data TData
+		err := strscan.Start(&data)
+		if err != nil {
+			return 0, err
+		}
+	} else if sec == Unsafe {
+		strscan = NewStructScanner(rows, true)
+		var data TData
+		err := strscan.Start(&data)
+		if err != nil {
+			return 0, err
+		}
+	} else {
+		return 0, errors.New("unknown value for <sec>")
+	}
+
+	rcount := 0
+
+	for rows.Next() {
+
+		if err := ctx.Err(); err != nil {
+			return rcount, err
+		}
+
+		if mode == SModeFast {
+			var data TData
+			err := strscan.StructScanBase(&data)
+			if err != nil {
+				return rcount, err
+			}
+
+			err = consumer(ctx, data)
+			if err != nil {
+				return rcount, exerr.Wrap(err, "").Build()
+			}
+
+			rcount++
+
+		} else if mode == SModeExtended {
+			var data TData
+			err := strscan.StructScanExt(q, &data)
+			if err != nil {
+				return rcount, err
+			}
+
+			err = consumer(ctx, data)
+			if err != nil {
+				return rcount, exerr.Wrap(err, "").Build()
+			}
+
+			rcount++
+
+		} else {
+			return rcount, errors.New("unknown value for <mode>")
+		}
+	}
+
+	if close {
+		err := strscan.rows.Close()
+		if err != nil {
+			return rcount, err
+		}
+	}
+
+	if err := rows.Err(); err != nil {
+		return rcount, err
+	}
+
+	return rcount, nil
+}