starlog/core.go

package starlog

import (
	"context"
	"errors"
	"fmt"
	"io"
	"os"
	"path/filepath"
	"runtime"
	"sort"
	"strconv"
	"strings"
	"sync/atomic"
	"time"
	"unicode"
	"unicode/utf8"
)

func generateCoreLogStr(skip int, logstr string) string {
	var line int = 0
	var funcname, fileName string
	now := time.Now()

	pc, fName, codeln, ok := runtime.Caller(skip)
	if !ok {
		return ""
	}
	line = codeln
	funcname = runtime.FuncForPC(pc).Name()
	funcname = filepath.Ext(funcname)
	funcname = strings.TrimPrefix(funcname, ".")
	fileName = filepath.Base(fName)

	y, m, d := now.Date()
	h, i, s := now.Clock()
	micro := now.Nanosecond() / 1e3
	logStr := fmt.Sprintf("%04d-%02d-%02d %02d:%02d:%02d.%06d", y, m, d, h, i, s, micro)
	logStr += " " + fileName + ":" + strconv.Itoa(line)
	logStr += " <" + funcname + ">"
	logStr += " " + logstr
	return logStr
}

func (logger *starlog) levelName(level int) string {
	levelName, ok := levels[level]
	if !ok {
		return strconv.Itoa(level)
	}
	return levelName
}

func (logger *starlog) levelColor(level int) *Color {
	color, ok := logger.colorMe[level]
	if ok && color != nil {
		return color
	}
	return NewColor(FgWhite)
}

func (logger *starlog) levelAttrs(level int) []Attr {
	attrs, ok := logger.colorList[level]
	if !ok {
		return []Attr{FgWhite}
	}
	cloned := make([]Attr, len(attrs))
	copy(cloned, attrs)
	return cloned
}

func cloneLevelAttrsMap(source map[int][]Attr) map[int][]Attr {
	if len(source) == 0 {
		return map[int][]Attr{}
	}
	cloned := make(map[int][]Attr, len(source))
	for level, attrs := range source {
		attrCopy := make([]Attr, len(attrs))
		copy(attrCopy, attrs)
		cloned[level] = attrCopy
	}
	return cloned
}

func cloneLevelColorMap(source map[int][]Attr) map[int]*Color {
	if len(source) == 0 {
		return map[int]*Color{}
	}
	cloned := make(map[int]*Color, len(source))
	for level, attrs := range source {
		cloned[level] = NewColor(attrs...)
	}
	return cloned
}

func cloneStringSlice(source []string) []string {
	if len(source) == 0 {
		return nil
	}
	cloned := make([]string, len(source))
	copy(cloned, source)
	return cloned
}

func cloneKeywordColorizers(source map[string]*Color) map[string]*Color {
	if len(source) == 0 {
		return nil
	}
	cloned := make(map[string]*Color, len(source))
	for key, colorizer := range source {
		cloned[key] = colorizer
	}
	return cloned
}

type keywordPattern struct {
	keyword      string
	keywordLower string
	byteLen      int
	colorizer    *Color
}

type keywordMatcher struct {
	byFirstRune     map[rune][]keywordPattern
	byFirstRuneFold map[rune][]keywordPattern
}

func buildKeywordMatcher(order []string, colorizers map[string]*Color) *keywordMatcher {
	if len(order) == 0 {
		return nil
	}
	matcher := &keywordMatcher{
		byFirstRune:     make(map[rune][]keywordPattern),
		byFirstRuneFold: make(map[rune][]keywordPattern),
	}
	for _, keyword := range order {
		if keyword == "" {
			continue
		}
		colorizer := colorizers[keyword]
		if colorizer == nil {
			continue
		}
		firstRune, _ := utf8.DecodeRuneInString(keyword)
		if firstRune == utf8.RuneError {
			continue
		}
		pattern := keywordPattern{
			keyword:      keyword,
			keywordLower: strings.ToLower(keyword),
			byteLen:      len(keyword),
			colorizer:    colorizer,
		}
		matcher.byFirstRune[firstRune] = append(matcher.byFirstRune[firstRune], pattern)
		matcher.byFirstRuneFold[unicode.ToLower(firstRune)] = append(matcher.byFirstRuneFold[unicode.ToLower(firstRune)], pattern)
	}
	if len(matcher.byFirstRune) == 0 {
		return nil
	}
	return matcher
}

func (logger *starlog) rebuildKeywordCachesLocked() {
	if logger.keywordColors == nil {
		logger.keywordColors = make(map[string][]Attr)
	}
	keywords := make([]string, 0, len(logger.keywordColors))
	var colorizers map[string]*Color
	for keyword, attrs := range logger.keywordColors {
		if keyword == "" {
			continue
		}
		keywords = append(keywords, keyword)
		if len(attrs) > 0 {
			if colorizers == nil {
				colorizers = make(map[string]*Color, len(logger.keywordColors))
			}
			colorizers[keyword] = NewColor(attrs...)
		}
	}
	sort.Slice(keywords, func(i, j int) bool {
		return len(keywords[i]) > len(keywords[j])
	})
	if len(keywords) == 0 {
		keywords = nil
	}
	logger.keywordOrder = keywords
	logger.keywordColorizers = colorizers
	logger.keywordMatcher = buildKeywordMatcher(keywords, colorizers)
}

func (logger *starlog) snapshotForBuildLocked() *starlog {
	colorAttrs := cloneLevelAttrsMap(logger.colorList)
	return &starlog{
		minLevel:            logger.minLevel,
		errOutputLevel:      logger.errOutputLevel,
		showFuncName:        logger.showFuncName,
		showThread:          logger.showThread,
		showLevel:           logger.showLevel,
		showDeatilFile:      logger.showDeatilFile,
		showColor:           logger.showColor,
		onlyColorLevel:      logger.onlyColorLevel,
		autoAppendNewline:   logger.autoAppendNewline,
		stopWriter:          logger.stopWriter,
		name:                logger.name,
		colorList:           colorAttrs,
		colorMe:             cloneLevelColorMap(colorAttrs),
		keywordColors:       nil,
		keywordOrder:        nil,
		keywordColorizers:   nil,
		keywordMatcher:      logger.keywordMatcher,
		keywordMatchOptions: logger.keywordMatchOptions,
		showFieldColor:      logger.showFieldColor,
		fieldKeyColor:       cloneAttrs(logger.fieldKeyColor),
		fieldTypeColors:     cloneColorMap(logger.fieldTypeColors),
		fieldValueColors:    cloneColorMap(logger.fieldValueColors),
		entryHandler:        logger.entryHandler,
		redactor:            logger.redactor,
		redactRules:         cloneRedactRules(logger.redactRules),
		redactFailMode:      logger.redactFailMode,
		redactMaskToken:     logger.redactMaskToken,
		entryHandlerTimeout: logger.entryHandlerTimeout,
		formatter:           logger.formatter,
		contextFields:       logger.contextFields,
	}
}

func (logger *starlog) formatTime(now time.Time) string {
	y, m, d := now.Date()
	h, i, s := now.Clock()
	micro := now.Nanosecond() / 1e3
	return fmt.Sprintf("%04d-%02d-%02d %02d:%02d:%02d.%06d", y, m, d, h, i, s, micro)
}

func (logger *starlog) buildMeta(fileName string, line int, funcname string, thread string) string {
	parts := make([]string, 0, 3)
	if logger.showDeatilFile {
		parts = append(parts, fileName+":"+strconv.Itoa(line))
	}
	if logger.showFuncName {
		parts = append(parts, "<"+funcname+">")
	}
	if logger.showThread {
		parts = append(parts, "|"+thread+"|")
	}
	return strings.Join(parts, " ")
}

func (logger *starlog) composeLine(timestamp string, meta string, levelTag string, message string) string {
	parts := make([]string, 0, 4)
	parts = append(parts, timestamp)
	if meta != "" {
		parts = append(parts, meta)
	}
	if logger.showLevel && levelTag != "" {
		parts = append(parts, levelTag)
	}
	parts = append(parts, message)
	return strings.Join(parts, " ")
}

func appendNewlineIfNeeded(text string, autoAppend bool) string {
	if !autoAppend || text == "" {
		return text
	}
	if strings.HasSuffix(text, "\n") {
		return text
	}
	return text + "\n"
}

func (logger *starlog) highlightKeywords(text string) string {
	if logger.keywordMatcher != nil {
		if highlighted, changed := logger.keywordMatcher.highlight(text, logger.keywordMatchOptions); changed {
			return highlighted
		}
		return text
	}
	if len(logger.keywordColors) == 0 {
		return text
	}
	keywords := logger.keywordOrder
	if len(keywords) == 0 {
		keywords = make([]string, 0, len(logger.keywordColors))
		for keyword := range logger.keywordColors {
			if keyword == "" {
				continue
			}
			keywords = append(keywords, keyword)
		}
		if len(keywords) == 0 {
			return text
		}
		sort.Slice(keywords, func(i, j int) bool {
			return len(keywords[i]) > len(keywords[j])
		})
	}

	highlighted := text
	for _, keyword := range keywords {
		attrs := logger.keywordColors[keyword]
		if len(attrs) == 0 {
			continue
		}
		colorizer := logger.keywordColorizers[keyword]
		highlighted = highlightKeywordText(highlighted, keyword, attrs, logger.keywordMatchOptions, colorizer)
	}
	return highlighted
}

func isWordRune(r rune) bool {
	return r == '_' || unicode.IsLetter(r) || unicode.IsDigit(r)
}

func hasWordBoundary(text string, start int, end int) bool {
	if start < 0 || end < start || end > len(text) {
		return false
	}
	leftBoundary := true
	if start > 0 {
		r, _ := utf8.DecodeLastRuneInString(text[:start])
		leftBoundary = !isWordRune(r)
	}
	rightBoundary := true
	if end < len(text) {
		r, _ := utf8.DecodeRuneInString(text[end:])
		rightBoundary = !isWordRune(r)
	}
	return leftBoundary && rightBoundary
}

func (matcher *keywordMatcher) highlight(text string, opts KeywordMatchOptions) (string, bool) {
	if matcher == nil || text == "" {
		return text, false
	}

	var builder strings.Builder
	builder.Grow(len(text) + 32)
	last := 0
	changed := false

	for idx := 0; idx < len(text); {
		r, size := utf8.DecodeRuneInString(text[idx:])
		if size <= 0 {
			size = 1
		}
		next := idx + size

		var patterns []keywordPattern
		if opts.IgnoreCase {
			patterns = matcher.byFirstRuneFold[unicode.ToLower(r)]
		} else {
			patterns = matcher.byFirstRune[r]
		}

		matched := false
		for _, pattern := range patterns {
			matchEnd := idx + pattern.byteLen
			if matchEnd > len(text) {
				continue
			}
			candidate := text[idx:matchEnd]

			ok := false
			if opts.IgnoreCase {
				ok = strings.EqualFold(candidate, pattern.keyword)
			} else {
				ok = candidate == pattern.keyword
			}
			if !ok {
				continue
			}
			if opts.WholeWord && !hasWordBoundary(text, idx, matchEnd) {
				continue
			}

			builder.WriteString(text[last:idx])
			if pattern.colorizer != nil {
				builder.WriteString(pattern.colorizer.Sprint(candidate))
			} else {
				builder.WriteString(candidate)
			}
			last = matchEnd
			idx = matchEnd
			matched = true
			changed = true
			break
		}

		if matched {
			continue
		}

		if r == utf8.RuneError && size == 1 {
			idx++
			continue
		}
		idx = next
	}

	if !changed {
		return text, false
	}
	builder.WriteString(text[last:])
	return builder.String(), true
}

func highlightKeywordText(text string, keyword string, attrs []Attr, opts KeywordMatchOptions, colorizer *Color) string {
	if text == "" || keyword == "" || len(attrs) == 0 {
		return text
	}
	if colorizer == nil {
		colorizer = NewColor(attrs...)
	}
	if !opts.IgnoreCase && !opts.WholeWord {
		return strings.ReplaceAll(text, keyword, colorizer.Sprint(keyword))
	}

	var builder strings.Builder
	builder.Grow(len(text) + 32)
	changed := false
	last := 0

	for idx := 0; idx < len(text); {
		r, size := utf8.DecodeRuneInString(text[idx:])
		if size <= 0 {
			size = 1
		}
		next := idx + size

		matchEnd := idx + len(keyword)
		if matchEnd <= len(text) {
			candidate := text[idx:matchEnd]
			matched := false
			if opts.IgnoreCase {
				matched = strings.EqualFold(candidate, keyword)
			} else {
				matched = candidate == keyword
			}
			if matched {
				if !opts.WholeWord || hasWordBoundary(text, idx, matchEnd) {
					builder.WriteString(text[last:idx])
					builder.WriteString(colorizer.Sprint(candidate))
					last = matchEnd
					idx = matchEnd
					changed = true
					continue
				}
			}
		}

		if r == utf8.RuneError && size == 1 {
			idx++
			continue
		}
		idx = next
	}

	if !changed {
		return text
	}
	builder.WriteString(text[last:])
	return builder.String()
}

func (logger *starlog) formatPlainFromEntry(entry *Entry, defaultLine string) string {
	if logger.formatter == nil {
		return defaultLine
	}
	formatted, err := logger.formatter.Format(entry)
	if err != nil || len(formatted) == 0 {
		return defaultLine
	}
	return string(formatted)
}

func (logger *starlog) renderEntryMessage(entry *Entry) string {
	if entry == nil {
		return ""
	}
	parts := make([]string, 0, 3)
	if entry.Message != "" {
		parts = append(parts, entry.Message)
	}
	if entry.Err != nil {
		parts = append(parts, "error="+entry.Err.Error())
	}
	fieldText := renderFields(entry.Fields)
	if fieldText != "" {
		parts = append(parts, fieldText)
	}
	return strings.Join(parts, " ")
}

func fieldTypeName(value interface{}) string {
	switch value.(type) {
	case nil:
		return FieldTypeNil
	case bool:
		return FieldTypeBool
	case string:
		return FieldTypeString
	case error:
		return FieldTypeError
	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64:
		return FieldTypeNumber
	default:
		return FieldTypeOther
	}
}

func (logger *starlog) renderDisplayFieldValue(key string, value interface{}) string {
	raw := fmt.Sprintf("%v", value)
	if !logger.showFieldColor {
		return raw
	}
	if attrs, ok := logger.fieldValueColors[key]; ok && len(attrs) > 0 {
		return NewColor(attrs...).Sprint(raw)
	}
	typeName := fieldTypeName(value)
	if attrs, ok := logger.fieldTypeColors[typeName]; ok && len(attrs) > 0 {
		return NewColor(attrs...).Sprint(raw)
	}
	return raw
}

func (logger *starlog) renderDisplayFields(fields Fields) string {
	if len(fields) == 0 {
		return ""
	}
	keys := make([]string, 0, len(fields))
	for key := range fields {
		keys = append(keys, key)
	}
	sort.Strings(keys)
	items := make([]string, 0, len(keys))
	for _, key := range keys {
		keyText := key
		if logger.showFieldColor && len(logger.fieldKeyColor) > 0 {
			keyText = NewColor(logger.fieldKeyColor...).Sprint(keyText)
		}
		valueText := logger.renderDisplayFieldValue(key, fields[key])
		items = append(items, keyText+"="+valueText)
	}
	return strings.Join(items, " ")
}

func (logger *starlog) renderDisplayMessage(entry *Entry) string {
	if entry == nil {
		return ""
	}
	parts := make([]string, 0, 2)
	base := entry.Message
	if entry.Err != nil {
		if base != "" {
			base += " "
		}
		base += "error=" + entry.Err.Error()
	}
	if base != "" {
		parts = append(parts, logger.highlightKeywords(base))
	}
	fieldText := logger.renderDisplayFields(entry.Fields)
	if fieldText != "" {
		parts = append(parts, fieldText)
	}
	return strings.Join(parts, " ")
}

func (logger *starlog) flushPendingWritesLocked(name string, colors []Attr) {
	if logger.switching {
		return
	}
	for len(logger.pendingWrites) > 0 {
		if logger.switching {
			return
		}
		logStr := logger.pendingWrites[0]
		logger.pendingWrites = logger.pendingWrites[1:]
		logger.signalPendingCondLocked()
		if err := logger.writeDirect(logStr); err != nil {
			reportWriteError(err, LogData{
				Name:   name,
				Log:    logStr,
				Colors: colors,
			})
		}
	}
}

func (logger *starlog) signalPendingCondLocked() {
	if logger.pendingCond != nil {
		logger.pendingCond.Broadcast()
	}
}

func (logger *starlog) updatePendingPeakLocked() {
	current := uint64(len(logger.pendingWrites))
	for {
		peak := atomic.LoadUint64(&logger.pendingPeakLen)
		if current <= peak {
			return
		}
		if atomic.CompareAndSwapUint64(&logger.pendingPeakLen, peak, current) {
			return
		}
	}
}

func (logger *starlog) writeDirect(logStr string) error {
	if logger.sink != nil {
		return logger.sink.Write([]byte(logStr))
	}
	if logger.output == nil {
		return nil
	}
	_, err := logger.output.Write([]byte(logStr))
	return err
}

func (logger *starlog) enqueuePendingWriteLocked(logStr string, data LogData) bool {
	for logger.switching && logger.pendingWriteLimit > 0 && len(logger.pendingWrites) >= logger.pendingWriteLimit {
		switch logger.pendingDropPolicy {
		case PendingDropNewest:
			atomic.AddUint64(&logger.pendingDropCount, 1)
			reportWriteError(ErrPendingWriteDropped, data)
			return true
		case PendingBlock:
			atomic.AddUint64(&logger.pendingBlockCount, 1)
			if logger.pendingCond == nil {
				atomic.AddUint64(&logger.pendingDropCount, 1)
				reportWriteError(ErrPendingWriteDropped, data)
				return true
			}
			logger.pendingCond.Wait()
		default:
			atomic.AddUint64(&logger.pendingDropCount, 1)
			dropData := data
			dropData.Log = logger.pendingWrites[0]
			logger.pendingWrites = logger.pendingWrites[1:]
			logger.signalPendingCondLocked()
			reportWriteError(ErrPendingWriteDropped, dropData)
		}
	}
	if !logger.switching {
		return false
	}
	logger.pendingWrites = append(logger.pendingWrites, logStr)
	logger.updatePendingPeakLocked()
	return true
}

func (logger *starlog) invokeEntryHandler(handler Handler, timeout time.Duration, entry *Entry, data LogData) {
	if handler == nil || entry == nil {
		return
	}
	handlerCtx := entry.Context
	if handlerCtx == nil {
		handlerCtx = context.Background()
	}
	run := func() {
		defer func() {
			if panicErr := recover(); panicErr != nil {
				reportAsyncDrop(fmt.Errorf("%w: %v", ErrAsyncHandlerPanic, panicErr), data)
			}
		}()
		if err := handler.Handle(handlerCtx, entry); err != nil {
			reportWriteError(err, data)
		}
	}
	if timeout <= 0 {
		run()
		return
	}
	done := make(chan struct{}, 1)
	go func() {
		run()
		done <- struct{}{}
	}()
	select {
	case <-done:
	case <-time.After(timeout):
		reportAsyncDrop(ErrAsyncHandlerTimeout, data)
	}
}

func (logger *starlog) enqueueAsyncTransfer(transfer logTransfer, fallbackSync bool) {
	StartStacks()
	if stacks == nil {
		reportAsyncDrop(io.ErrClosedPipe, transfer.LogData)
		if fallbackSync && GetAsyncFallbackToSync() {
			invokeAsyncHandlerSafely(transfer.handlerFunc, transfer.LogData)
		}
		return
	}
	if err := stacks.TryPush(transfer); err != nil {
		if errors.Is(err, errStackFull) {
			reportAsyncDrop(ErrAsyncQueueFull, transfer.LogData)
		} else {
			reportAsyncDrop(err, transfer.LogData)
		}
		if fallbackSync && GetAsyncFallbackToSync() {
			invokeAsyncHandlerSafely(transfer.handlerFunc, transfer.LogData)
		}
	}
}

func (logger *starlog) build(thread string, isStd bool, isShow bool, handler func(data LogData), level int, logDetail string, fields Fields, logErr error, ctx context.Context) {
	logger.mu.Lock()
	snapshot := logger.snapshotForBuildLocked()
	logger.mu.Unlock()
	if level < snapshot.minLevel {
		return
	}

	var skip, line int = 3, 0
	var funcname, fileName string
	now := time.Now()
	if isStd {
		skip++
	}
	if snapshot.showDeatilFile || snapshot.showFuncName {
		pc, fName, codeln, ok := runtime.Caller(skip)
		if !ok {
			return
		}
		line = codeln
		funcname = runtime.FuncForPC(pc).Name()
		funcname = filepath.Ext(funcname)
		funcname = strings.TrimPrefix(funcname, ".")
		fileName = filepath.Base(fName)
	}

	levelName := snapshot.levelName(level)
	levelTag := "[" + levelName + "]"
	timestamp := snapshot.formatTime(now)
	meta := snapshot.buildMeta(fileName, line, funcname, thread)

	contextFields := Fields(nil)
	if ctx != nil && snapshot.contextFields != nil {
		contextFields = snapshot.contextFields(ctx)
	}
	mergedFields := mergeFields(fields, contextFields)

	entry := &Entry{
		Time:       now,
		Level:      level,
		LevelName:  levelName,
		LoggerName: snapshot.name,
		Thread:     thread,
		File:       fileName,
		Line:       line,
		Func:       funcname,
		Message:    logDetail,
		Fields:     mergedFields,
		Err:        logErr,
		Context:    ctx,
	}
	if !logger.applyRedaction(snapshot, entry) {
		return
	}
	if !logger.allowByDedup(entry) {
		return
	}
	if !logger.allowBySampling(entry) {
		return
	}
	if !logger.allowByRateLimit(entry) {
		return
	}
	messageText := snapshot.renderEntryMessage(entry)
	defaultPlain := snapshot.composeLine(timestamp, meta, levelTag, messageText)
	plainLine := snapshot.formatPlainFromEntry(entry, defaultPlain)
	plainLine = appendNewlineIfNeeded(plainLine, snapshot.autoAppendNewline)
	displayLine := plainLine
	logData := LogData{
		Log:    plainLine,
		Colors: snapshot.levelAttrs(level),
		Name:   snapshot.name,
	}

	if isShow && snapshot.showColor {
		if snapshot.onlyColorLevel && snapshot.formatter == nil {
			levelSegment := levelTag
			if snapshot.showLevel {
				levelSegment = snapshot.levelColor(level).Sprint(levelTag)
			}
			messageSegment := snapshot.renderDisplayMessage(entry)
			displayLine = snapshot.composeLine(timestamp, meta, levelSegment, messageSegment)
		} else {
			displayLine = snapshot.levelColor(level).Sprint(plainLine)
		}
	}

	if isShow {
		if level < snapshot.errOutputLevel {
			if snapshot.showColor {
				if _, err := fmt.Fprint(stdScreen, displayLine); err != nil {
					reportWriteError(err, logData)
				}
			} else {
				if _, err := fmt.Fprint(os.Stdout, displayLine); err != nil {
					reportWriteError(err, logData)
				}
			}
		} else {
			if snapshot.showColor {
				if _, err := fmt.Fprint(errScreen, displayLine); err != nil {
					reportWriteError(err, logData)
				}
			} else {
				if _, err := fmt.Fprint(os.Stderr, displayLine); err != nil {
					reportWriteError(err, logData)
				}
			}
		}
	}
	if handler != nil {
		logger.enqueueAsyncTransfer(logTransfer{
			handlerFunc: handler,
			LogData:     logData,
		}, true)
	}
	if snapshot.entryHandler != nil {
		entryCopy := *entry
		logger.enqueueAsyncTransfer(logTransfer{
			handlerFunc: func(data LogData) {
				entryVal := entryCopy
				logger.invokeEntryHandler(snapshot.entryHandler, snapshot.entryHandlerTimeout, &entryVal, data)
			},
			LogData: logData,
		}, false)
	}
	if !snapshot.stopWriter {
		logger.writeWithData(plainLine, logData)
	}
}

func (logger *starlog) write(logStr string) {
	logger.writeWithData(logStr, LogData{Log: logStr})
}

func (logger *starlog) writeWithData(logStr string, data LogData) {
	logger.mu.Lock()
	defer logger.mu.Unlock()

	if logger.stopWriter {
		return
	}
	if data.Name == "" {
		data.Name = logger.name
	}
	logStr = appendNewlineIfNeeded(logStr, logger.autoAppendNewline)
	data.Log = logStr
	if logger.switching {
		if logger.enqueuePendingWriteLocked(logStr, data) {
			return
		}
	}
	logger.flushPendingWritesLocked(data.Name, data.Colors)
	if err := logger.writeDirect(logStr); err != nil {
		reportWriteError(err, data)
	}
}

func (logger *starlog) writePendingLocked() {
	if logger.stopWriter {
		logger.pendingWrites = nil
		logger.signalPendingCondLocked()
		return
	}
	logger.flushPendingWritesLocked(logger.name, nil)
	logger.signalPendingCondLocked()
}

func (logger *starlog) print(str ...interface{}) string {
	return fmt.Sprint(str...)
}

func (logger *starlog) printf(format string, str ...interface{}) string {
	return fmt.Sprintf(format, str...)
}

func (logger *starlog) println(str ...interface{}) string {
	return fmt.Sprintln(str...)
}

func (logger *starlog) Debug(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvDebug, strs, nil, nil, nil)
}

func (logger *starlog) Debugf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvDebug, strs, nil, nil, nil)
}

func (logger *starlog) Debugln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvDebug, strs, nil, nil, nil)
}

func (logger *starlog) Info(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvInfo, strs, nil, nil, nil)
}

func (logger *starlog) Infof(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvInfo, strs, nil, nil, nil)
}

func (logger *starlog) Infoln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvInfo, strs, nil, nil, nil)
}

func (logger *starlog) Notice(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvNotice, strs, nil, nil, nil)
}

func (logger *starlog) Noticef(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvNotice, strs, nil, nil, nil)
}

func (logger *starlog) Noticeln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvNotice, strs, nil, nil, nil)
}

func (logger *starlog) Warning(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvWarning, strs, nil, nil, nil)
}

func (logger *starlog) Warningf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvWarning, strs, nil, nil, nil)
}

func (logger *starlog) Warningln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvWarning, strs, nil, nil, nil)
}

func (logger *starlog) Error(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvError, strs, nil, nil, nil)
}

func (logger *starlog) Errorf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvError, strs, nil, nil, nil)
}

func (logger *starlog) Errorln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvError, strs, nil, nil, nil)
}

func (logger *starlog) Critical(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvCritical, strs, nil, nil, nil)
}

func (logger *starlog) Criticalf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvCritical, strs, nil, nil, nil)
}

func (logger *starlog) Criticalln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvCritical, strs, nil, nil, nil)
}

func (logger *starlog) Fatal(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvFatal, strs, nil, nil, nil)
	os.Exit(9)
}

func (logger *starlog) Fatalf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvFatal, strs, nil, nil, nil)
	os.Exit(9)
}

func (logger *starlog) Fatalln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvFatal, strs, nil, nil, nil)
	os.Exit(9)
}

func (logger *starlog) Panic(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvPanic, strs, nil, nil, nil)
	panic(str)
}

func (logger *starlog) Panicf(thread string, isStd bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, logger.showStd, handler, LvPanic, strs, nil, nil, nil)
	panic(fmt.Sprintf(format, str...))
}

func (logger *starlog) Panicln(thread string, isStd bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, logger.showStd, handler, LvPanic, strs, nil, nil, nil)
	panic(fmt.Sprintln(str...))
}

func (logger *starlog) Print(thread string, isStd bool, isShow bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	if isShow {
		fmt.Print(strs)
	}
	logger.write(strs)
}

func (logger *starlog) Printf(thread string, isStd bool, isShow bool, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	if isShow {
		fmt.Print(strs)
	}
	logger.write(strs)
}

func (logger *starlog) Println(thread string, isStd bool, isShow bool, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	if isShow {
		fmt.Print(strs)
	}
	logger.write(strs)
}

func (logger *starlog) Log(thread string, isStd bool, isShow bool, level int, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.build(thread, isStd, isShow, handler, level, strs, nil, nil, nil)
}

func (logger *starlog) Logf(thread string, isStd bool, isShow bool, level int, handler func(LogData), format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.build(thread, isStd, isShow, handler, level, strs, nil, nil, nil)
}

func (logger *starlog) Logln(thread string, isStd bool, isShow bool, level int, handler func(LogData), str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.build(thread, isStd, isShow, handler, level, strs, nil, nil, nil)
}

func (logger *starlog) Write(str ...interface{}) {
	strs := fmt.Sprint(str...)
	logger.write(strs)
}

func (logger *starlog) Writef(format string, str ...interface{}) {
	strs := fmt.Sprintf(format, str...)
	logger.Write(strs)
}

func (logger *starlog) Writeln(str ...interface{}) {
	strs := fmt.Sprintln(str...)
	logger.Write(strs)
}