add lint action

.gitea/workflows/lint.yml

@@ -1,9 +1,9 @@
-name: Go Action 
+name: Go Lint
 
 on: [push, pull_request]
 
 jobs:
-  goaction:
+  lint:
     runs-on: ubuntu-latest # Use a Gitea Actions runner label
     steps:
       - name: Check out repository code
@@ -12,15 +12,12 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5 # Action to install a specific Go version
         with:
-          go-version: '1.25.5' # Specify your required Go version
+          go-version: '1.22' # Specify your required Go version
 
       - name: Run golangci-lint
-        uses: golangci/golangci-lint-action@v8 # Use the golangci-lint action
+        uses: golangci/golangci-lint-action@v3 # Use the golangci-lint action
         with:
-          version: v2.7.2 # Specify the linter version
+          version: v1.54.0 # Specify the linter version
           # Optional: additional arguments
           args: --verbose
 
-      - name: Run go test
-        run: go test ./...
-

.golangci.yml

@@ -1,30 +1,9 @@
-version: "2"
+run:
-linters:
+  timeout: 5m
-  default: all
-  disable:
-    - wsl
-    - noinlineerr
-  settings:
-    depguard:
-      rules:
-        main:
-          allow:
-            - $gostd
-            - gitoa.ru
 
-    funcorder:
+linters-settings:
-      constructor: false
-    recvcheck:
-      disable-builtin: false
-      exclusions:
-        - "*.String"
-        - "*.UnmarshalText" 
-        - "*.UnmarshalJSON"
-        - "*.UnmarshalBinary"
     dupl:
       threshold: 100
-    exhaustive:
-      default-signifies-exhaustive: true
     funlen:
       lines: 100
       statements: 50
@@ -33,61 +12,65 @@ linters:
       min-occurrences: 2
     gocyclo:
       min-complexity: 15
+    govet:
+      check-shadowing: true
     lll:
       line-length: 140
+    fieldalignment:
+      suggest-new: true
     misspell:
       locale: US  
-    tagliatelle:
+    exhaustive:
-      case:
+      default-signifies-exhaustive: true
-        rules:
-          avro: snake
-          bson: camel
-          json: snake
-          xml: camel
-          yaml: camel
-        use-field-name: true
     varnamelen:
       min-name-length: 2
       ignore-names:
         - err
-        - "n"
+        - n
         - i
         - w
-  exclusions:
+    tagliatelle:
-    generated: lax
+      case:
-    presets:
+        use-field-name: true
-      - comments
+        rules:
-      - common-false-positives
+          json: snake
-      - legacy
+          yaml: camel
-      - std-error-handling
+          xml: camel
-    rules:
+          bson: camel
-      - linters:
+          avro: snake
-          - exhaustruct
+
-          - gochecknoglobals
+linters:
-          - ireturn
+    enable-all: true
-          - mnd
+    disable:
-        path: _test\.go
+    # deprecated
-      - linters:
+      - interfacer
-          - err113
+      - structcheck
-          - lll
+      - varcheck
-        path: _example_test\.go
+      - golint
-      - linters:
+      - deadcode
-          - lll
+      - scopelint
-          - mnd
+      - exhaustivestruct
-        path: example/*
+      - ifshort
-    paths:
+      - nosnakecase
-      - third_party$
+      - maligned
-      - builtin$
+
-      - examples$
+      - depguard # need configure
-formatters:
+      - nolintlint # use with space
-  enable:
+
-    - gci
+issues:
-    - gofmt
+  # Excluding configuration per-path, per-linter, per-text and per-source
-    - gofumpt
+  exclude-rules:
-    - goimports
+    - path: _test\.go
-  exclusions:
+      linters:
-    generated: lax
+        - gomnd
-    paths:
+        - ireturn
-      - third_party$
+        - exhaustruct
-      - builtin$
+        - gochecknoglobals
-      - examples$
+    - path: _example_test\.go
+      linters:
+        - lll
+        - goerr113
+    - path: example/*
+      linters:
+        - gomnd
+        - lll

README.md

@@ -1,5 +1,5 @@
 # log
 
-![Build Status](https://gitoa.ru/go-4devs/log/actions/workflows/goaction.yml/badge.svg)
+[![Build Status](https://drone.gitoa.ru/api/badges/go-4devs/log/status.svg)](https://drone.gitoa.ru/go-4devs/log)
 [![Go Report Card](https://goreportcard.com/badge/gitoa.ru/go-4devs/log)](https://goreportcard.com/report/gitoa.ru/go-4devs/log)
 [![GoDoc](https://godoc.org/gitoa.ru/go-4devs/log?status.svg)](http://godoc.org/gitoa.ru/go-4devs/log)

bench_test.go

@@ -69,10 +69,10 @@ func getMessage(iter int) string {
 	return _messages[iter%1000]
 }
 
-func fakeFmtArgs() []any {
+func fakeFmtArgs() []interface{} {
 	// Need to keep this a function instead of a package-global var so that we
 	// pay the cast-to-interface{} penalty on each call.
-	return []any{
+	return []interface{}{
 		_tenInts[0],
 		_tenInts,
 		_tenStrings[0],
@@ -101,8 +101,8 @@ func fakeFields() []field.Field {
 	}
 }
 
-func fakeSugarFields() []any {
+func fakeSugarFields() []interface{} {
-	return []any{
+	return []interface{}{
 		"int", _tenInts[0],
 		"ints", _tenInts,
 		"string", _tenStrings[0],

entry/caller.go

@@ -8,7 +8,6 @@ import (
 
 func Caller(depth int, full bool) string {
 	const offset = 3
-
 	_, file, line, has := runtime.Caller(depth + offset)
 
 	if !has {

entry/entry.go

@@ -32,7 +32,7 @@ func WithMessage(msg string) Option {
 	}
 }
 
-func WithMessagef(format string, args ...any) Option {
+func WithMessagef(format string, args ...interface{}) Option {
 	return func(e *Entry) {
 		e.format = format
 		e.args = args
@@ -50,7 +50,7 @@ func New(opts ...Option) *Entry {
 		fields: make(field.Fields, 0, defaultCap+1),
 		level:  level.Debug,
 		format: "",
-		args:   make([]any, 0, defaultCap+1),
+		args:   make([]interface{}, 0, defaultCap+1),
 	}
 
 	for _, opt := range opts {
@@ -63,7 +63,7 @@ func New(opts ...Option) *Entry {
 // Entry slice field.
 type Entry struct {
 	format string
-	args   []any
+	args   []interface{}
 	level  level.Level
 	fields field.Fields
 }
@@ -133,7 +133,7 @@ func (e *Entry) SetMessage(msg string) *Entry {
 	return e
 }
 
-func (e *Entry) SetMessagef(format string, args ...any) *Entry {
+func (e *Entry) SetMessagef(format string, args ...interface{}) *Entry {
 	if e == nil {
 		return New().SetMessagef(format, args...)
 	}
@@ -154,7 +154,7 @@ func (e *Entry) Add(fields ...field.Field) *Entry {
 	return e
 }
 
-func (e *Entry) AddAny(key string, value any) *Entry {
+func (e *Entry) AddAny(key string, value interface{}) *Entry {
 	return e.Add(field.Any(key, value))
 }
 

entry/pool.go

@@ -4,7 +4,7 @@ import "sync"
 
 //nolint:gochecknoglobals
 var pool = sync.Pool{
-	New: func() any {
+	New: func() interface{} {
 		return New()
 	},
 }

field.go

@@ -5,7 +5,7 @@ import (
 )
 
 // Field create field.
-func Field(key string, value any) field.Field {
+func Field(key string, value interface{}) field.Field {
 	return field.Any(key, value)
 }
 

field/encoder.go

@@ -1,3 +1,4 @@
+//nolint:gomnd
 package field
 
 import (
@@ -103,6 +104,46 @@ func (b BaseEncoder) AppendDelimiter(dst []byte, deli byte) []byte {
 	return append(dst, deli)
 }
 
+//nolint:gocyclo,cyclop
+func (b BaseEncoder) appendValue(dst []byte, val Value, prefix string, deli byte) []byte {
+	switch val.Kind {
+	case KindGroup:
+		return b.appendGroup(dst, val.AsGroup(), prefix)
+	case KindClosure:
+		return b.appendValue(dst, AnyValue(val.Resolve()), prefix, deli)
+	case KindArray:
+		return b.AppendArray(b.AppendDelimiter(dst, deli), val.AsArray())
+	case KindNil:
+		return b.AppendNull(b.AppendDelimiter(dst, deli))
+	case KindBool:
+		return b.AppendBool(b.AppendDelimiter(dst, deli), val.AsBool())
+	case KindBinary:
+		return b.AppendBytes(b.AppendDelimiter(dst, deli), val.AsBinary())
+	case KindComplex128:
+		return b.AppendComplex(b.AppendDelimiter(dst, deli), val.AsComplex128())
+	case KindInt64:
+		return b.AppendInt(b.AppendDelimiter(dst, deli), val.AsInt64())
+	case KindFloat32:
+		return b.AppendFloat(b.AppendDelimiter(dst, deli), float64(val.AsFloat32()), 32)
+	case KindFloat64:
+		return b.AppendFloat(b.AppendDelimiter(dst, deli), val.AsFloat64(), 64)
+	case KindUint64:
+		return b.AppendUint(b.AppendDelimiter(dst, deli), val.AsUint64())
+	case KindError:
+		return b.AppendString(b.AppendDelimiter(dst, deli), val.AsError().Error())
+	case KindString:
+		return b.AppendString(b.AppendDelimiter(dst, deli), val.AsString())
+	case KindDuration:
+		return b.AppendDuration(b.AppendDelimiter(dst, deli), val.AsDuration())
+	case KindTime:
+		return b.AppendTime(b.AppendDelimiter(dst, deli), val.AsTime())
+	case KindAny:
+		return b.DefaultValue(b.AppendDelimiter(dst, deli), b, val)
+	}
+
+	return b.DefaultValue(b.AppendDelimiter(dst, deli), b, val)
+}
+
 func (b BaseEncoder) AppendDuration(dst []byte, d time.Duration) []byte {
 	return b.AppendString(dst, d.String())
 }
@@ -163,6 +204,12 @@ func (b BaseEncoder) AppendField(dst []byte, field Field) []byte {
 	return b.appendField(dst, field, prefix, b.delimeter)
 }
 
+func (b BaseEncoder) appendField(dst []byte, field Field, prefix string, deli byte) []byte {
+	dst = b.AppendKey(dst, field.Key, prefix)
+
+	return b.appendValue(dst, field.Value, field.Key+".", deli)
+}
+
 func (b BaseEncoder) AppendKey(dst []byte, key string, prefix string) []byte {
 	if prefix != "" {
 		dst = append(dst, prefix...)
@@ -171,7 +218,6 @@ func (b BaseEncoder) AppendKey(dst []byte, key string, prefix string) []byte {
 	return b.AppendString(dst, key)
 }
 
-//nolint:mnd
 func (b BaseEncoder) AppendComplex(dst []byte, c complex128) []byte {
 	cmplx := strconv.FormatComplex(c, 'g', -1, 128)
 
@@ -182,7 +228,6 @@ func (b BaseEncoder) AppendFloat(dst []byte, f float64, bitSize int) []byte {
 	return strconv.AppendFloat(dst, f, 'g', -1, bitSize)
 }
 
-//nolint:mnd
 func (b BaseEncoder) AppendUint(dst []byte, u uint64) []byte {
 	return strconv.AppendUint(dst, u, 10)
 }
@@ -191,7 +236,6 @@ func (b BaseEncoder) AppendNull(dst []byte) []byte {
 	return append(dst, b.nullValue...)
 }
 
-//nolint:mnd
 func (b BaseEncoder) AppendInt(dst []byte, val int64) []byte {
 	return strconv.AppendInt(dst, val, 10)
 }
@@ -207,6 +251,17 @@ func (b BaseEncoder) AppendGroup(dst []byte, fields []Field) []byte {
 	return append(dst, b.group.end)
 }
 
+func (b BaseEncoder) appendGroup(dst []byte, fields []Field, prefix string) []byte {
+	if len(fields) > 0 {
+		dst = b.appendField(dst, fields[0], ".", b.delimeter)
+		for _, field := range fields[1:] {
+			dst = b.appendField(append(dst, b.group.deli), field, prefix, b.delimeter)
+		}
+	}
+
+	return dst
+}
+
 func (b BaseEncoder) AppendArray(dst []byte, in []Value) []byte {
 	dst = append(dst, b.array.start)
 	if len(in) > 0 {
@@ -225,60 +280,3 @@ func (b BaseEncoder) AppendBytes(dst, in []byte) []byte {
 
 	return append(dst, '"')
 }
-
-func (b BaseEncoder) appendGroup(dst []byte, fields []Field, prefix string) []byte {
-	if len(fields) > 0 {
-		dst = b.appendField(dst, fields[0], ".", b.delimeter)
-		for _, field := range fields[1:] {
-			dst = b.appendField(append(dst, b.group.deli), field, prefix, b.delimeter)
-		}
-	}
-
-	return dst
-}
-
-func (b BaseEncoder) appendField(dst []byte, field Field, prefix string, deli byte) []byte {
-	dst = b.AppendKey(dst, field.Key, prefix)
-
-	return b.appendValue(dst, field.Value, field.Key+".", deli)
-}
-
-//nolint:mnd,gocyclo,cyclop
-func (b BaseEncoder) appendValue(dst []byte, val Value, prefix string, deli byte) []byte {
-	switch val.Kind {
-	case KindGroup:
-		return b.appendGroup(dst, val.AsGroup(), prefix)
-	case KindClosure:
-		return b.appendValue(dst, AnyValue(val.Resolve()), prefix, deli)
-	case KindArray:
-		return b.AppendArray(b.AppendDelimiter(dst, deli), val.AsArray())
-	case KindNil:
-		return b.AppendNull(b.AppendDelimiter(dst, deli))
-	case KindBool:
-		return b.AppendBool(b.AppendDelimiter(dst, deli), val.AsBool())
-	case KindBinary:
-		return b.AppendBytes(b.AppendDelimiter(dst, deli), val.AsBinary())
-	case KindComplex128:
-		return b.AppendComplex(b.AppendDelimiter(dst, deli), val.AsComplex128())
-	case KindInt64:
-		return b.AppendInt(b.AppendDelimiter(dst, deli), val.AsInt64())
-	case KindFloat32:
-		return b.AppendFloat(b.AppendDelimiter(dst, deli), float64(val.AsFloat32()), 32)
-	case KindFloat64:
-		return b.AppendFloat(b.AppendDelimiter(dst, deli), val.AsFloat64(), 64)
-	case KindUint64:
-		return b.AppendUint(b.AppendDelimiter(dst, deli), val.AsUint64())
-	case KindError:
-		return b.AppendString(b.AppendDelimiter(dst, deli), val.AsError().Error())
-	case KindString:
-		return b.AppendString(b.AppendDelimiter(dst, deli), val.AsString())
-	case KindDuration:
-		return b.AppendDuration(b.AppendDelimiter(dst, deli), val.AsDuration())
-	case KindTime:
-		return b.AppendTime(b.AppendDelimiter(dst, deli), val.AsTime())
-	case KindAny:
-		return b.DefaultValue(b.AppendDelimiter(dst, deli), b, val)
-	}
-
-	return b.DefaultValue(b.AppendDelimiter(dst, deli), b, val)
-}

field/encoder_json_test.go

@@ -15,7 +15,6 @@ func TestEncoderJSONAppendField_string(t *testing.T) {
 	encode := field.NewEncoderJSON()
 
 	buf := buffer.New()
-
 	defer func() {
 		buf.Free()
 	}()

field/field.go

@@ -2,7 +2,6 @@ package field
 
 import (
 	"fmt"
-	"slices"
 	"time"
 )
 
@@ -503,6 +502,13 @@ func (f Field) String() string {
 	return fmt.Sprintf("%s=%+v", f.Key, f.Value)
 }
 
+// String implent stringer.
 func (f Field) IsKey(keys ...string) bool {
-	return slices.Contains(keys, f.Key)
+	for _, key := range keys {
+		if key == f.Key {
+			return true
+		}
+	}
+
+	return false
 }

field/value.go

@@ -1,4 +1,4 @@
-//nolint:exhaustruct
+// nolint: exhaustruct
 package field
 
 import (
@@ -27,7 +27,7 @@ func StringpValue(value *string) Value {
 	return StringValue(*value)
 }
 
-// StringsValue returns a new Value for a string.
+// StringpValue returns a new Value for a string.
 func StringsValue(value []string) Value {
 	return Value{
 		Kind: KindArray,
@@ -115,7 +115,7 @@ func Uint8sValue(values []uint8) Value {
 	}
 }
 
-// Uint64pValue returns a Value for a []uint64.
+// Uint64sValue returns a Value for a []uint64.
 func Uint64pValue(v *uint64) Value {
 	if v == nil {
 		return NilValue()
@@ -145,7 +145,7 @@ func Int64sValue(value []int64) Value {
 	}
 }
 
-// Int64pValue returns a Value for an *int64.
+// Int64sValue returns a Value for an *int64.
 func Int64pValue(value *int64) Value {
 	if value == nil {
 		return NilValue()
@@ -159,7 +159,7 @@ func Float64Value(v float64) Value {
 	return Value{num: math.Float64bits(v), Kind: KindFloat64}
 }
 
-// Float64sValue returns a Value for a floating-points number.
+// Float64Value returns a Value for a floating-points number.
 func Float64sValue(values []float64) Value {
 	return Value{
 		Kind: KindArray,
@@ -175,7 +175,7 @@ func Float64sValue(values []float64) Value {
 	}
 }
 
-// Float64pValue returns a Value for a floating-points number.
+// Float64Value returns a Value for a floating-points number.
 func Float64pValue(v *float64) Value {
 	if v == nil {
 		return NilValue()
@@ -208,7 +208,7 @@ func Complex128Value(v complex128) Value {
 	}
 }
 
-// Complex128sValue returns a Value for a []complex128.
+// Complex128Value returns a Value for a []complex128.
 func Complex128sValue(values []complex128) Value {
 	return Value{
 		Kind: KindArray,
@@ -224,7 +224,7 @@ func Complex128sValue(values []complex128) Value {
 	}
 }
 
-// Complex128pValue returns a Value for a *complex128.
+// Complex128Value returns a Value for a *complex128.
 func Complex128pValue(v *complex128) Value {
 	if v == nil {
 		return NilValue()
@@ -275,7 +275,7 @@ func DurationValue(v time.Duration) Value {
 	return Value{inum: v.Nanoseconds(), Kind: KindDuration}
 }
 
-// DurationpValue returns a Value for a *time.Duration.
+// DurationValue returns a Value for a *time.Duration.
 func DurationpValue(v *time.Duration) Value {
 	if v == nil {
 		return NilValue()
@@ -284,7 +284,7 @@ func DurationpValue(v *time.Duration) Value {
 	return DurationValue(*v)
 }
 
-// DurationsValue returns a Value for a *time.Duration.
+// DurationValue returns a Value for a *time.Duration.
 func DurationsValue(values []time.Duration) Value {
 	return Value{
 		Kind: KindArray,
@@ -469,7 +469,42 @@ func (v Value) String() string {
 	return string(v.append(buf))
 }
 
-//nolint:gocyclo,cyclop
+// append appends a text representation of v to dst.
+// v is formatted as with fmt.Sprint.
+//
+//nolint:gomnd,cyclop
+func (v Value) append(dst []byte) []byte {
+	switch v.Kind {
+	case KindString:
+		return append(dst, v.AsString()...)
+	case KindInt64:
+		return strconv.AppendInt(dst, v.inum, 10)
+	case KindUint64:
+		return strconv.AppendUint(dst, v.num, 10)
+	case KindFloat64:
+		return strconv.AppendFloat(dst, v.AsFloat64(), 'g', -1, 64)
+	case KindFloat32:
+		return strconv.AppendFloat(dst, float64(v.AsFloat32()), 'g', -1, 32)
+	case KindBool:
+		return strconv.AppendBool(dst, v.AsBool())
+	case KindDuration:
+		return append(dst, v.AsDuration().String()...)
+	case KindTime:
+		return append(dst, v.AsTime().String()...)
+	case KindError:
+		return append(dst, v.AsError().Error()...)
+	case KindGroup:
+		return fmt.Append(dst, v.AsGroup())
+	case KindClosure:
+		return fmt.Append(dst, v.Resolve())
+	case KindAny:
+		return fmt.Append(dst, v.any)
+	default:
+		return fmt.Appendf(dst, "%+v", v.any)
+	}
+}
+
+// nolint: gocyclo,cyclop
 func (v Value) Any() any {
 	switch v.Kind {
 	case KindAny, KindBinary:
@@ -507,7 +542,7 @@ func (v Value) Any() any {
 	return v.any
 }
 
-//nolint:forcetypeassert
+// nolint: forcetypeassert
 func (v Value) AsString() string {
 	if v.Kind != KindString {
 		return ""
@@ -532,7 +567,6 @@ func (v Value) AsUint64() uint64 {
 	return v.num
 }
 
-//nolint:gosec
 func (v Value) AsFloat32() float32 {
 	return math.Float32frombits(uint32(v.num))
 }
@@ -615,38 +649,3 @@ func (v Value) AsArray() Values {
 		return nil
 	}
 }
-
-// append appends a text representation of v to dst.
-// v is formatted as with fmt.Sprint.
-//
-//nolint:mnd,cyclop
-func (v Value) append(dst []byte) []byte {
-	switch v.Kind {
-	case KindString:
-		return append(dst, v.AsString()...)
-	case KindInt64:
-		return strconv.AppendInt(dst, v.inum, 10)
-	case KindUint64:
-		return strconv.AppendUint(dst, v.num, 10)
-	case KindFloat64:
-		return strconv.AppendFloat(dst, v.AsFloat64(), 'g', -1, 64)
-	case KindFloat32:
-		return strconv.AppendFloat(dst, float64(v.AsFloat32()), 'g', -1, 32)
-	case KindBool:
-		return strconv.AppendBool(dst, v.AsBool())
-	case KindDuration:
-		return append(dst, v.AsDuration().String()...)
-	case KindTime:
-		return append(dst, v.AsTime().String()...)
-	case KindError:
-		return append(dst, v.AsError().Error()...)
-	case KindGroup:
-		return fmt.Append(dst, v.AsGroup())
-	case KindClosure:
-		return fmt.Append(dst, v.Resolve())
-	case KindAny:
-		return fmt.Append(dst, v.any)
-	default:
-		return fmt.Appendf(dst, "%+v", v.any)
-	}
-}

global.go

@@ -9,7 +9,7 @@ import (
 	"gitoa.ru/go-4devs/log/level"
 )
 
-//nolint:gochecknoglobals
+//nolint:gochecknoglobals,gomnd
 var global = With(New(),
 	WithTime(KeyTime, time.RFC3339),
 	WithLevel(KeyLevel, level.Debug),
@@ -28,112 +28,112 @@ func Log() Logger {
 }
 
 // Emerg log by emergency level.
-func Emerg(ctx context.Context, args ...any) {
+func Emerg(ctx context.Context, args ...interface{}) {
 	global.Emerg(ctx, args...)
 }
 
 // Alert log by alert level.
-func Alert(ctx context.Context, args ...any) {
+func Alert(ctx context.Context, args ...interface{}) {
 	global.Alert(ctx, args...)
 }
 
 // Crit log by critical level.
-func Crit(ctx context.Context, args ...any) {
+func Crit(ctx context.Context, args ...interface{}) {
 	global.Crit(ctx, args...)
 }
 
 // Err log by error level.
-func Err(ctx context.Context, args ...any) {
+func Err(ctx context.Context, args ...interface{}) {
 	global.Err(ctx, args...)
 }
 
 // Warn logs by warning level.
-func Warn(ctx context.Context, args ...any) {
+func Warn(ctx context.Context, args ...interface{}) {
 	global.Warn(ctx, args...)
 }
 
 // Notice log by notice level.
-func Notice(ctx context.Context, args ...any) {
+func Notice(ctx context.Context, args ...interface{}) {
 	global.Notice(ctx, args...)
 }
 
 // Info log by info level.
-func Info(ctx context.Context, args ...any) {
+func Info(ctx context.Context, args ...interface{}) {
 	global.Info(ctx, args...)
 }
 
 // Debug log by debug level.
-func Debug(ctx context.Context, args ...any) {
+func Debug(ctx context.Context, args ...interface{}) {
 	global.Debug(ctx, args...)
 }
 
 // Print log by info level and arguments.
-func Print(args ...any) {
+func Print(args ...interface{}) {
 	global.Print(args...)
 }
 
 // Fatal log by alert level and arguments.
-func Fatal(args ...any) {
+func Fatal(args ...interface{}) {
 	global.Fatal(args...)
 }
 
 // Panic log by emergency level and arguments.
-func Panic(args ...any) {
+func Panic(args ...interface{}) {
 	global.Panic(args...)
 }
 
 // Println log by info level and arguments.
-func Println(args ...any) {
+func Println(args ...interface{}) {
 	global.Println(args...)
 }
 
 // Fatalln log by alert level and arguments.
-func Fatalln(args ...any) {
+func Fatalln(args ...interface{}) {
 	global.Fatalln(args...)
 }
 
 // Panicln log by emergency level and arguments.
-func Panicln(args ...any) {
+func Panicln(args ...interface{}) {
 	global.Panicln(args...)
 }
 
 // EmergKVs sugared log by emergency level and key-values.
-func EmergKVs(ctx context.Context, msg string, args ...any) {
+func EmergKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.EmergKVs(ctx, msg, args...)
 }
 
 // AlertKVs sugared log by alert level and key-values.
-func AlertKVs(ctx context.Context, msg string, args ...any) {
+func AlertKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.AlertKVs(ctx, msg, args...)
 }
 
 // CritKVs sugared log by critcal level and key-values.
-func CritKVs(ctx context.Context, msg string, args ...any) {
+func CritKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.CritKVs(ctx, msg, args...)
 }
 
 // ErrKVs sugared log by error level and key-values.
-func ErrKVs(ctx context.Context, msg string, args ...any) {
+func ErrKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.ErrKVs(ctx, msg, args...)
 }
 
 // WarnKVs sugared log by warning level and key-values.
-func WarnKVs(ctx context.Context, msg string, args ...any) {
+func WarnKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.WarnKVs(ctx, msg, args...)
 }
 
 // NoticeKVs sugared log by notice level and key-values.
-func NoticeKVs(ctx context.Context, msg string, args ...any) {
+func NoticeKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.NoticeKVs(ctx, msg, args...)
 }
 
 // InfoKVs sugared log by info level and key-values.
-func InfoKVs(ctx context.Context, msg string, args ...any) {
+func InfoKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.InfoKVs(ctx, msg, args...)
 }
 
 // DebugKVs sugared log by debug level and key-values.
-func DebugKVs(ctx context.Context, msg string, args ...any) {
+func DebugKVs(ctx context.Context, msg string, args ...interface{}) {
 	global.DebugKVs(ctx, msg, args...)
 }
 
@@ -178,57 +178,57 @@ func DebugKV(ctx context.Context, msg string, args ...field.Field) {
 }
 
 // Emergf log by emergency level by format and arguments.
-func Emergf(ctx context.Context, format string, args ...any) {
+func Emergf(ctx context.Context, format string, args ...interface{}) {
 	global.Emergf(ctx, format, args...)
 }
 
 // Alertf log by alert level by format and arguments.
-func Alertf(ctx context.Context, format string, args ...any) {
+func Alertf(ctx context.Context, format string, args ...interface{}) {
 	global.Alertf(ctx, format, args...)
 }
 
 // Critf log by critical level by format and arguments.
-func Critf(ctx context.Context, format string, args ...any) {
+func Critf(ctx context.Context, format string, args ...interface{}) {
 	global.Critf(ctx, format, args...)
 }
 
 // Errf log by error level by format and arguments.
-func Errf(ctx context.Context, format string, args ...any) {
+func Errf(ctx context.Context, format string, args ...interface{}) {
 	global.Errf(ctx, format, args...)
 }
 
 // Warnf log by warning level by format and arguments.
-func Warnf(ctx context.Context, format string, args ...any) {
+func Warnf(ctx context.Context, format string, args ...interface{}) {
 	global.Warnf(ctx, format, args...)
 }
 
 // Noticef log by notice level by format and arguments.
-func Noticef(ctx context.Context, format string, args ...any) {
+func Noticef(ctx context.Context, format string, args ...interface{}) {
 	global.Noticef(ctx, format, args...)
 }
 
 // Infof log by info level by format and arguments.
-func Infof(ctx context.Context, format string, args ...any) {
+func Infof(ctx context.Context, format string, args ...interface{}) {
 	global.Noticef(ctx, format, args...)
 }
 
 // Debugf log by debug level by format and arguments.
-func Debugf(ctx context.Context, format string, args ...any) {
+func Debugf(ctx context.Context, format string, args ...interface{}) {
 	global.Debugf(ctx, format, args...)
 }
 
 // Printf log by info level by format and arguments without context.
-func Printf(format string, args ...any) {
+func Printf(format string, args ...interface{}) {
 	global.Printf(format, args...)
 }
 
 // Fatalf log by alert level by format and arguments without context.
-func Fatalf(format string, args ...any) {
+func Fatalf(format string, args ...interface{}) {
 	global.Fatalf(format, args...)
 }
 
 // Panicf log by emergency level and arguments without context.
-func Panicf(format string, args ...any) {
+func Panicf(format string, args ...interface{}) {
 	global.Panicf(format, args...)
 }
 

go.mod

@@ -1,3 +1,3 @@
 module gitoa.ru/go-4devs/log
 
-go 1.22
+go 1.20

level/level_test.go

@@ -51,9 +51,7 @@ func TestUnmarshalJSON(t *testing.T) {
 	for expect, actuals := range levels {
 		for _, actual := range actuals {
 			var level level.Level
-
+			if err := level.UnmarshalJSON([]byte(actual)); err != nil {
-			err := level.UnmarshalJSON([]byte(actual))
-			if err != nil {
 				t.Errorf("%s got err: %s", level, err)
 
 				continue

logger.go

@@ -28,118 +28,172 @@ func (l Logger) Write(in []byte) (int, error) {
 	return l.write(context.Background(), level.Info, string(in))
 }
 
+func (l Logger) write(ctx context.Context, level level.Level, msg string, fields ...field.Field) (int, error) {
+	data := entry.Get()
+
+	defer func() {
+		entry.Put(data)
+	}()
+
+	return l(ctx, data.SetLevel(level).SetMessage(msg).Add(fields...))
+}
+
+func (l Logger) writef(ctx context.Context, level level.Level, format string, args ...interface{}) (int, error) {
+	data := entry.Get()
+
+	defer func() {
+		entry.Put(data)
+	}()
+
+	return l(ctx, data.SetLevel(level).SetMessagef(format, args...))
+}
+
+func (l Logger) kv(_ context.Context, args ...interface{}) field.Fields {
+	kvEntry := entry.Get()
+
+	defer func() {
+		entry.Put(kvEntry)
+	}()
+
+	for i := 0; i < len(args); i++ {
+		if f, ok := args[i].(field.Field); ok {
+			kvEntry = kvEntry.Add(f)
+
+			continue
+		}
+
+		if i == len(args)-1 {
+			kvEntry = kvEntry.AddAny(badKey, args[i])
+
+			break
+		}
+
+		key, val := args[i], args[i+1]
+		if keyStr, ok := key.(string); ok {
+			kvEntry = kvEntry.AddAny(keyStr, val)
+			i++
+
+			continue
+		}
+
+		kvEntry = kvEntry.AddAny(badKey, args[i])
+	}
+
+	return kvEntry.Fields()
+}
+
 // With adds middlewares to logger.
 func (l Logger) With(mw ...Middleware) Logger {
 	return With(l, mw...)
 }
 
 // Emerg log by emergency level.
-func (l Logger) Emerg(ctx context.Context, args ...any) {
+func (l Logger) Emerg(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Emergency, "", args...))
 }
 
 // Alert log by alert level.
-func (l Logger) Alert(ctx context.Context, args ...any) {
+func (l Logger) Alert(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Alert, "", args...))
 }
 
 // Crit log by critical level.
-func (l Logger) Crit(ctx context.Context, args ...any) {
+func (l Logger) Crit(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Critical, "", args...))
 }
 
 // Err log by error level.
-func (l Logger) Err(ctx context.Context, args ...any) {
+func (l Logger) Err(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Error, "", args...))
 }
 
 // Warn log by warning level.
-func (l Logger) Warn(ctx context.Context, args ...any) {
+func (l Logger) Warn(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Warning, "", args...))
 }
 
 // Notice log by notice level.
-func (l Logger) Notice(ctx context.Context, args ...any) {
+func (l Logger) Notice(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Notice, "", args...))
 }
 
 // Info log by info level.
-func (l Logger) Info(ctx context.Context, args ...any) {
+func (l Logger) Info(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Info, "", args...))
 }
 
 // Debug log by debug level.
-func (l Logger) Debug(ctx context.Context, args ...any) {
+func (l Logger) Debug(ctx context.Context, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Debug, "", args...))
 }
 
 // Print log by info level and arguments.
-func (l Logger) Print(args ...any) {
+func (l Logger) Print(args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Info, "", args...))
 }
 
 // Fatal log by alert level and arguments.
-func (l Logger) Fatal(args ...any) {
+func (l Logger) Fatal(args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Alert, "", args...))
 }
 
 // Panic log by emergency level and arguments.
-func (l Logger) Panic(args ...any) {
+func (l Logger) Panic(args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Emergency, "", args...))
 }
 
 // Println log by info level and arguments.
-func (l Logger) Println(args ...any) {
+func (l Logger) Println(args ...interface{}) {
 	writeOutput(l.write(context.Background(), level.Info, fmt.Sprintln(args...)))
 }
 
 // Fatalln log by alert level and arguments.
-func (l Logger) Fatalln(args ...any) {
+func (l Logger) Fatalln(args ...interface{}) {
 	writeOutput(l.write(context.Background(), level.Alert, fmt.Sprintln(args...)))
 }
 
 // Panicln log by emergency level and arguments.
-func (l Logger) Panicln(args ...any) {
+func (l Logger) Panicln(args ...interface{}) {
 	writeOutput(l.write(context.Background(), level.Emergency, fmt.Sprintln(args...)))
 }
 
 // EmergKVs sugared log by emergency level and key-values.
-func (l Logger) EmergKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) EmergKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Emergency, msg, l.kv(ctx, args...)...))
 }
 
 // AlertKVs sugared log by alert level and key-values.
-func (l Logger) AlertKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) AlertKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Alert, msg, l.kv(ctx, args...)...))
 }
 
 // CritKVs sugared log by critcal level and key-values.
-func (l Logger) CritKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) CritKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Critical, msg, l.kv(ctx, args...)...))
 }
 
 // ErrKVs sugared log by error level and key-values.
-func (l Logger) ErrKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) ErrKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Error, msg, l.kv(ctx, args...)...))
 }
 
 // WarnKVs sugared log by warning level and key-values.
-func (l Logger) WarnKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) WarnKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Warning, msg, l.kv(ctx, args...)...))
 }
 
 // NoticeKVs sugared log by notice level and key-values.
-func (l Logger) NoticeKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) NoticeKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Notice, msg, l.kv(ctx, args...)...))
 }
 
 // InfoKVs sugared log by info level and key-values.
-func (l Logger) InfoKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) InfoKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Info, msg, l.kv(ctx, args...)...))
 }
 
 // DebugKVs sugared log by debug level and key-values.
-func (l Logger) DebugKVs(ctx context.Context, msg string, args ...any) {
+func (l Logger) DebugKVs(ctx context.Context, msg string, args ...interface{}) {
 	writeOutput(l.write(ctx, level.Debug, msg, l.kv(ctx, args...)...))
 }
 
@@ -184,57 +238,57 @@ func (l Logger) DebugKV(ctx context.Context, msg string, args ...field.Field) {
 }
 
 // Emergf log by emergency level by format and arguments.
-func (l Logger) Emergf(ctx context.Context, format string, args ...any) {
+func (l Logger) Emergf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Emergency, format, args...))
 }
 
 // Alertf log by alert level by format and arguments.
-func (l Logger) Alertf(ctx context.Context, format string, args ...any) {
+func (l Logger) Alertf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Alert, format, args...))
 }
 
 // Critf log by critical level by format and arguments.
-func (l Logger) Critf(ctx context.Context, format string, args ...any) {
+func (l Logger) Critf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Critical, format, args...))
 }
 
 // Errf log by error level by format and arguments.
-func (l Logger) Errf(ctx context.Context, format string, args ...any) {
+func (l Logger) Errf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Error, format, args...))
 }
 
 // Warnf log by warning level by format and arguments.
-func (l Logger) Warnf(ctx context.Context, format string, args ...any) {
+func (l Logger) Warnf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Warning, format, args...))
 }
 
 // Noticef log by notice level by format and arguments.
-func (l Logger) Noticef(ctx context.Context, format string, args ...any) {
+func (l Logger) Noticef(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Notice, format, args...))
 }
 
 // Infof log by info level by format and arguments.
-func (l Logger) Infof(ctx context.Context, format string, args ...any) {
+func (l Logger) Infof(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Info, format, args...))
 }
 
 // Debugf log by debug level by format and arguments.
-func (l Logger) Debugf(ctx context.Context, format string, args ...any) {
+func (l Logger) Debugf(ctx context.Context, format string, args ...interface{}) {
 	writeOutput(l.writef(ctx, level.Debug, format, args...))
 }
 
 // Printf log by info level by format and arguments without context.
-func (l Logger) Printf(format string, args ...any) {
+func (l Logger) Printf(format string, args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Info, format, args...))
 }
 
 // Fatalf log by alert level by format and arguments without context.
-func (l Logger) Fatalf(format string, args ...any) {
+func (l Logger) Fatalf(format string, args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Alert, format, args...))
 }
 
 // Panicf log by emergency level and arguments without context.
-func (l Logger) Panicf(format string, args ...any) {
+func (l Logger) Panicf(format string, args ...interface{}) {
 	writeOutput(l.writef(context.Background(), level.Emergency, format, args...))
 }
 
@@ -247,67 +301,12 @@ func (l Logger) Writer(ctx context.Context, level level.Level, fields ...field.F
 	}
 }
 
-func (l Logger) kv(_ context.Context, args ...any) field.Fields {
-	kvEntry := entry.Get()
-
-	defer func() {
-		entry.Put(kvEntry)
-	}()
-
-	for i := 0; i < len(args); i++ {
-		if f, ok := args[i].(field.Field); ok {
-			kvEntry = kvEntry.Add(f)
-
-			continue
-		}
-
-		if i == len(args)-1 {
-			kvEntry = kvEntry.AddAny(badKey, args[i])
-
-			break
-		}
-
-		key, val := args[i], args[i+1]
-		if keyStr, ok := key.(string); ok {
-			kvEntry = kvEntry.AddAny(keyStr, val)
-			i++
-
-			continue
-		}
-
-		kvEntry = kvEntry.AddAny(badKey, args[i])
-	}
-
-	return kvEntry.Fields()
-}
-
-func (l Logger) write(ctx context.Context, level level.Level, msg string, fields ...field.Field) (int, error) {
-	data := entry.Get()
-
-	defer func() {
-		entry.Put(data)
-	}()
-
-	return l(ctx, data.SetLevel(level).SetMessage(msg).Add(fields...))
-}
-
-func (l Logger) writef(ctx context.Context, level level.Level, format string, args ...any) (int, error) {
-	data := entry.Get()
-
-	defer func() {
-		entry.Put(data)
-	}()
-
-	return l(ctx, data.SetLevel(level).SetMessagef(format, args...))
-}
-
 //nolint:containedctx
 type writer struct {
-	Logger
-
 	ctx    context.Context
 	level  level.Level
 	fields []field.Field
+	Logger
 }
 
 func (w writer) WithLevel(level level.Level) writer {

logger_example_test.go

@@ -213,8 +213,8 @@ func ExampleNew_jsonFormat() {
 	logger.Err(ctx, "same error message")
 	logger.WarnKVs(ctx, "same warn message", "obj", Obj{Name: "obj name"})
 	// Output:
-	// {"msg":"same error message","level":"error","go-version":"go1.25.5"}
+	// {"msg":"same error message","level":"error","go-version":"go1.22.2"}
-	// {"msg":"same warn message","obj":{"Name":"obj name","IsEnable":false},"level":"warning","go-version":"go1.25.5"}
+	// {"msg":"same warn message","obj":{"Name":"obj name","IsEnable":false},"level":"warning","go-version":"go1.22.2"}
 }
 
 func ExampleNew_textEncoding() {
@@ -227,8 +227,8 @@ func ExampleNew_textEncoding() {
 	logger.InfoKVs(ctx, "same info message", "api-version", 0.1, "obj", Obj{Name: "text value", IsEnable: true})
 
 	// Output:
-	// msg="same error message" level=error go-version=go1.25.5
+	// msg="same error message" level=error go-version=go1.22.2
-	// msg="same info message" api-version=0.1 obj={Name:text value IsEnable:true} level=info go-version=go1.25.5
+	// msg="same info message" api-version=0.1 obj={Name:text value IsEnable:true} level=info go-version=go1.22.2
 }
 
 type ctxKey string
@@ -243,7 +243,6 @@ func levelInfo(ctx context.Context, entry *entry.Entry, handler log.Logger) (int
 
 func ExampleWith() {
 	var requestID ctxKey = "requestID"
-
 	vctx := context.WithValue(ctx, requestID, "6a5fa048-7181-11ea-bc55-0242ac130003")
 
 	logger := log.New(log.WithStdout()).With(
@@ -253,7 +252,7 @@ func ExampleWith() {
 		log.GoVersion("go"),
 	)
 	logger.Info(vctx, "same message")
-	// Output: msg="same message" level=info requestID=6a5fa048-7181-11ea-bc55-0242ac130003 api=0.1.0 go=go1.25.5
+	// Output: msg="same message" level=info requestID=6a5fa048-7181-11ea-bc55-0242ac130003 api=0.1.0 go=go1.22.2
 }
 
 func ExampleLogger_Print() {
@@ -264,7 +263,7 @@ func ExampleLogger_Print() {
 		log.GoVersion("go"),
 	)
 	logger.Print("same message")
-	// Output: msg="same message" level=info client=http api=0.1.0 go=go1.25.5
+	// Output: msg="same message" level=info client=http api=0.1.0 go=go1.22.2
 }
 
 func ExamplePrint() {

middleware.go

@@ -62,7 +62,7 @@ func WithLevel(key string, lvl level.Level) Middleware {
 }
 
 // KeyValue add field by const key value.
-func KeyValue(key string, value any) Middleware {
+func KeyValue(key string, value interface{}) Middleware {
 	return func(ctx context.Context, e *entry.Entry, handler Logger) (int, error) {
 		return handler(ctx, e.AddAny(key, value))
 	}
@@ -75,7 +75,7 @@ func GoVersion(key string) Middleware {
 	}
 }
 
-// WithContextValue add field by context key.
+// WithContext add field by context key.
 func WithContextValue(keys ...fmt.Stringer) Middleware {
 	return func(ctx context.Context, e *entry.Entry, handler Logger) (int, error) {
 		for _, key := range keys {
@@ -93,7 +93,6 @@ func WithName(name string) Middleware {
 }
 
 // WithCaller adds called file.
-//
 // Deprecated: use WithSource.
 func WithCaller(key string, depth int, full bool) Middleware {
 	const offset = 2

source.go

@@ -82,13 +82,13 @@ type Source struct {
 }
 
 func (l Source) MarshalText() ([]byte, error) {
-	return fmt.Appendf(nil, "%s:%d", l.File, l.Line), nil
+	return []byte(fmt.Sprintf("%s:%d", l.File, l.Line)), nil
 }
 
 func (l Source) MarshalJSON() ([]byte, error) {
 	return fmt.Appendf([]byte{}, `{"file":"%s","line":%d,"func":"%s"}`, l.File, l.Line, l.Func), nil
 }
 
-func errSourceField(skip, mframe int) field.Field {
+func errSourceField(skip, max int) field.Field {
-	return field.String(KeySource, fmt.Sprintf("source not found by frames[%d:%d]", skip, mframe))
+	return field.String(KeySource, fmt.Sprintf("source not found by frames[%d:%d]", skip, max))
 }

writter.go

@@ -13,16 +13,16 @@ import (
 
 // Keys for "built-in" attributes.
 const (
-	// KeyTime is the key used by the built-in handlers for the time
+	// TimeKey is the key used by the built-in handlers for the time
 	// when the log method is called. The associated Value is a [time.Time].
 	KeyTime = "time"
-	// KeyLevel is the key used by the built-in handlers for the level
+	// LevelKey is the key used by the built-in handlers for the level
 	// of the log call. The associated value is a [Level].
 	KeyLevel = "level"
-	// KeyMessage is the key used by the built-in handlers for the
+	// MessageKey is the key used by the built-in handlers for the
 	// message of the log call. The associated value is a string.
 	KeyMessage = "msg"
-	// KeySource is the key used by the built-in handlers for the source file
+	// SourceKey is the key used by the built-in handlers for the source file
 	// and line of the log call. The associated value is a string.
 	KeySource = "source"
 	// KeyName logger name.
@@ -104,7 +104,6 @@ func FormatWithBracket(enc Encoder) func(io.Writer, *entry.Entry) (int, error) {
 
 	return func(w io.Writer, data *entry.Entry) (int, error) {
 		buf := buffer.New()
-
 		defer func() {
 			buf.Free()
 		}()
@@ -140,7 +139,6 @@ func FormatWithBracket(enc Encoder) func(io.Writer, *entry.Entry) (int, error) {
 func FormatString(enc Encoder) func(io.Writer, *entry.Entry) (int, error) {
 	return func(w io.Writer, entry *entry.Entry) (int, error) {
 		buf := buffer.New()
-
 		defer func() {
 			buf.Free()
 		}()
@@ -165,7 +163,6 @@ func FormatString(enc Encoder) func(io.Writer, *entry.Entry) (int, error) {
 func FormatJSON(enc Encoder) func(w io.Writer, entry *entry.Entry) (int, error) {
 	return func(w io.Writer, entry *entry.Entry) (int, error) {
 		buf := buffer.New()
-
 		defer func() {
 			buf.Free()
 		}()