v1.0.0

.gitignore

@@ -1,2 +1,3 @@
 .idea/
 test/
+*.log

README.md

@@ -1 +1,2 @@
 # ScuroLogger (slog)
+

examples/main.go

@@ -0,0 +1,21 @@
+package main
+
+import "git.nix13.pw/scuroneko/slog"
+
+func main() {
+	logger := slog.CreateLogger().JsonPretty(false)
+	defer logger.Close()
+	logger.AddWriter(logger.CreateTextStdoutWriter())
+	f, err := logger.CreateJsonFileWriter("main.log")
+	if err != nil {
+		panic(err)
+	}
+	logger.AddWriter(f)
+	logger.Infoln("Test")
+	logger.Warnln("Test")
+	logger.Errorln("Test")
+	logger.Debugln("Test") // No output
+	logger.Level(slog.DEBUG)
+	logger.Debugln("Test") // Now we have output
+	logger.Fatalln("Test") // Exit code 1
+}

go.sum

@@ -1,13 +1,9 @@
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
 github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
-github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
-github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
 github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
-github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
-golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
 golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=

io.go

@@ -0,0 +1,91 @@
+package slog
+
+import (
+	"fmt"
+	"os"
+)
+
+func (l *Logger) Infof(format string, args ...any) {
+	l.print(INFO, fmt.Sprintf(format, args...))
+}
+func (l *Logger) Info(m ...any) {
+	l.print(INFO, m...)
+}
+func (l *Logger) Infoln(m ...any) {
+	l.println(INFO, m...)
+}
+
+func (l *Logger) Warnf(format string, args ...any) {
+	l.print(WARN, fmt.Sprintf(format, args...))
+}
+func (l *Logger) Warn(m ...any) {
+	l.print(WARN, m...)
+}
+func (l *Logger) Warnln(m ...any) {
+	l.println(WARN, m...)
+}
+
+func (l *Logger) Errorf(format string, args ...any) {
+	l.print(ERROR, fmt.Sprintf(format, args...))
+}
+func (l *Logger) Error(m ...any) {
+	l.print(ERROR, m...)
+}
+func (l *Logger) Errorln(m ...any) {
+	l.println(ERROR, m...)
+}
+
+func (l *Logger) Fatalf(format string, args ...any) {
+	l.print(FATAL, fmt.Sprintf(format, args...))
+	os.Exit(1)
+}
+func (l *Logger) Fatal(m ...any) {
+	l.print(FATAL, m...)
+	os.Exit(1)
+}
+func (l *Logger) Fatalln(m ...any) {
+	l.println(FATAL, m...)
+	os.Exit(1)
+}
+
+func (l *Logger) Debugf(format string, args ...any) {
+	l.print(DEBUG, fmt.Sprintf(format, args...))
+}
+func (l *Logger) Debug(m ...any) {
+	l.print(DEBUG, m...)
+}
+func (l *Logger) Debugln(m ...any) {
+	l.println(DEBUG, m...)
+}
+
+// Write message without trailing "\n"
+// Good for database
+func (l *Logger) print(level LogLevel, m ...any) {
+	if l.level.n < level.n {
+		return
+	}
+
+	tb := getFullTraceback(0)
+	for _, writer := range l.writers {
+		err := writer.Print(level, l.prefix, tb, m...)
+		if err != nil {
+			l.Error(err)
+		}
+	}
+}
+
+// Docker requires "\n" at end to write to log.
+// print not work for docker, otherwise it will work and write into stdout
+func (l *Logger) println(level LogLevel, m ...any) {
+	if l.level.n < level.n {
+		return
+	}
+
+	tb := getFullTraceback(0)
+	for _, writer := range l.writers {
+		err := writer.Print(level, l.prefix, tb, append(m, "\n")...)
+		if err != nil {
+			l.Error(err)
+		}
+	}
+}

logger.go

@@ -1,105 +1,22 @@
-package laniakea
+package slog
 
 import (
-	"bufio"
-	"encoding/json"
 	"fmt"
 	"io"
-	"os"
-	"path/filepath"
-	"runtime"
-	"sort"
 	"strings"
 	"time"
 
 	"github.com/fatih/color"
 )
 
-type LoggerWriter interface {
-	Close() error
-	Write(p []byte) (n int, err error)
-	Print(level LogLevel, prefix string, traceback []*MethodTraceback, messages ...any) error
-}
-type LoggerTextWriter struct {
-	LoggerWriter
-	writer         io.Writer
-	printTraceback bool
-	printTime      bool
-}
-
-func (w *LoggerTextWriter) Write(p []byte) (n int, err error) {
-	n, err = w.writer.Write(p)
-	if err != nil {
-		return n, err
-	}
-	err = bufio.NewWriter(w.writer).Flush()
-	return n, err
-}
-func (w *LoggerTextWriter) Print(level LogLevel, prefix string, tb []*MethodTraceback, messages ...any) error {
-	s := buildString(level, prefix, true, w.printTraceback, w.printTime, messages...)
-	_, err := w.Write([]byte(s))
-	return err
-}
-func (w *LoggerTextWriter) Close() error {
-	return w.writer.(io.Closer).Close()
-}
-
-type LoggerJsonWriter struct {
-	LoggerWriter
-	writer io.Writer
-	pretty bool
-}
-type LoggerJsonMessage struct {
-	Time      time.Time          `json:"time"`
-	Level     string             `json:"level"`
-	Prefix    string             `json:"prefix"`
-	Message   string             `json:"message"`
-	Traceback []*MethodTraceback `json:"traceback"`
-}
-
-func (w *LoggerJsonWriter) Write(data []byte) (int, error) {
-	n, err := w.writer.Write(data)
-	if err != nil {
-		return n, err
-	}
-	err = bufio.NewWriter(w.writer).Flush()
-	return n, err
-}
-func (w *LoggerJsonWriter) Print(level LogLevel, prefix string, traceback []*MethodTraceback, messages ...any) error {
-	msg := Map(messages, func(el any) string {
-		return fmt.Sprintf("%v", el)
-	})
-	m := LoggerJsonMessage{
-		Time:      time.Now(),
-		Level:     level.GetName(),
-		Prefix:    prefix,
-		Message:   strings.Join(msg, " "),
-		Traceback: traceback,
-	}
-	var data []byte
-	var err error
-	if w.pretty {
-		data, err = json.MarshalIndent(m, "", "  ")
-	} else {
-		data, err = json.Marshal(m)
-	}
-	if err != nil {
-		return err
-	}
-	_, err = w.Write(append(data, []byte("\n")...))
-	return err
-}
-func (w *LoggerJsonWriter) Close() error {
-	return w.writer.(io.Closer).Close()
-}
-
 type Logger struct {
 	prefix  string
 	level   LogLevel
+	writers []LoggerWriter
+
 	printTraceback bool
 	printTime      bool
 	jsonPretty     bool
-	writers        []LoggerWriter
 }
 
 type LogLevel struct {
@@ -113,12 +30,11 @@ func (l *LogLevel) GetName() string {
 }
 
 type MethodTraceback struct {
-	Package   string `json:"package"`
 	Method    string `json:"method"`
-	fullPath  string
-	signature string
 	Filename  string `json:"filename"`
 	Line      int    `json:"line"`
+	Signature string `json:"signature"`
+	FullPath  string `json:"fullPath"`
 }
 
 var (
@@ -138,60 +54,6 @@ func CreateLogger() *Logger {
 	}
 }
 
-func (l *Logger) CreateTextFileWriter(path string) (*LoggerTextWriter, error) {
-	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
-	if err != nil {
-		return nil, err
-	}
-	file, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
-	if err != nil {
-		return nil, err
-	}
-
-	writer := &LoggerTextWriter{
-		writer: file, printTraceback: l.printTraceback, printTime: l.printTime,
-	}
-	return writer, nil
-}
-func (l *Logger) CreateTextStdoutWriter() *LoggerTextWriter {
-	writer := &LoggerTextWriter{
-		writer: os.Stdout, printTraceback: l.printTraceback, printTime: l.printTime,
-	}
-	return writer
-}
-func (l *Logger) CreateJsonStdoutWriter() *LoggerJsonWriter {
-	writer := &LoggerJsonWriter{
-		writer: os.Stdout, pretty: l.jsonPretty,
-	}
-	return writer
-}
-func (l *Logger) CreateJsonFileWriter(path string) (*LoggerJsonWriter, error) {
-	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
-	if err != nil {
-		return nil, err
-	}
-	file, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
-	if err != nil {
-		return nil, err
-	}
-	writer := &LoggerJsonWriter{
-		writer: file, pretty: l.jsonPretty,
-	}
-	return writer, nil
-}
-func (l *Logger) CreateTextWriter(w io.Writer) *LoggerTextWriter {
-	writer := &LoggerTextWriter{
-		writer: w, printTraceback: l.printTraceback, printTime: l.printTime,
-	}
-	return writer
-}
-func (l *Logger) CreateJsonWriter(w io.Writer) *LoggerJsonWriter {
-	writer := &LoggerJsonWriter{
-		writer: w, pretty: l.jsonPretty,
-	}
-	return writer
-}
-
 func (l *Logger) Prefix(prefix string) *Logger {
 	l.prefix = prefix
 	return l
@@ -220,153 +82,65 @@ func (l *Logger) AddWriter(writer LoggerWriter) *Logger {
 	l.writers = append(l.writers, writer)
 	return l
 }
-
-func (l *Logger) Infof(format string, args ...any) {
-	l.print(INFO, fmt.Sprintf(format, args...))
+func (l *Logger) Close() error {
+	for _, writer := range l.writers {
+		err := writer.Close()
+		if err != nil {
+			l.Error(err)
 		}
-func (l *Logger) Info(m ...any) {
-	l.println(INFO, m...)
+	}
+	return nil
 }
 
-func (l *Logger) Warnf(format string, args ...any) {
-	l.print(WARN, fmt.Sprintf(format, args...))
+func (l *Logger) CreateTextWriter(w io.Writer) *LoggerTextWriter {
+	return CreateTextWriter(w, l.printTraceback, l.printTime)
 }
-func (l *Logger) Warn(m ...any) {
-	l.println(WARN, m...)
+func (l *Logger) CreateTextStdoutWriter() *LoggerTextWriter {
+	return CreateTextStdoutWriter(l.printTraceback, l.printTime)
+}
+func (l *Logger) CreateTextFileWriter(filename string) (*LoggerTextWriter, error) {
+	return CreateTextFileWriter(filename, l.printTraceback, l.printTime)
+}
+func (l *Logger) CreateJsonWriter(w io.Writer) *LoggerJsonWriter {
+	return CreateJsonWriter(w, l.jsonPretty)
+}
+func (l *Logger) CreateJsonStdoutWriter() *LoggerJsonWriter {
+	return CreateJsonStdoutWriter(l.jsonPretty)
+}
+func (l *Logger) CreateJsonFileWriter(filename string) (*LoggerJsonWriter, error) {
+	return CreateJsonFileWriter(filename, l.jsonPretty)
 }
 
-func (l *Logger) Error(m ...any) {
-	l.println(ERROR, m...)
-}
-
-func (l *Logger) Fatal(m ...any) {
-	l.println(FATAL, m...)
-	os.Exit(1)
-}
-
-func (l *Logger) Debug(m ...any) {
-	l.println(DEBUG, m...)
-}
-
-func formatTime(t time.Time) string {
+func FormatTime(t time.Time) string {
 	return fmt.Sprintf("%02d.%02d.%02d %02d:%02d:%02d", t.Day(), t.Month(), t.Year(), t.Hour(), t.Minute(), t.Second())
 }
-func formatTraceback(mt *MethodTraceback) string {
+func FormatTraceback(mt *MethodTraceback) string {
 	return fmt.Sprintf("%s:%s:%d", mt.Filename, mt.Method, mt.Line)
 }
 func FormatFullTraceback(tracebacks []*MethodTraceback) string {
 	formatted := make([]string, 0)
 	for _, tb := range tracebacks {
-		formatted = append(formatted, formatTraceback(tb))
+		formatted = append(formatted, FormatTraceback(tb))
 	}
 	return strings.Join(formatted, "->")
 }
-
-func getTraceback() *MethodTraceback {
-	caller, _, _, _ := runtime.Caller(4)
-	details := runtime.FuncForPC(caller)
-	signature := details.Name()
-	path, line := details.FileLine(caller)
-	splitPath := strings.Split(path, "/")
-
-	splitSignature := strings.Split(signature, ".")
-	pkg, method := splitSignature[0], splitSignature[len(splitSignature)-1]
-
-	tb := &MethodTraceback{
-		Filename:  splitPath[len(splitPath)-1],
-		fullPath:  path,
-		Line:      line,
-		signature: signature,
-		Package:   pkg,
-		Method:    method,
-	}
-
-	return tb
-}
-func getFullTraceback(skip int) []*MethodTraceback {
-	pc := make([]uintptr, 15)
-	runtime.Callers(skip, pc)
-	list := make([]*MethodTraceback, 0)
-	frames := runtime.CallersFrames(pc)
-	for {
-		frame, more := frames.Next()
-		if !more {
-			break
-		}
-		details := runtime.FuncForPC(frame.PC)
-		signature := details.Name()
-		path, line := details.FileLine(frame.PC)
-		splitPath := strings.Split(path, "/")
-
-		splitSignature := strings.Split(signature, ".")
-		pkg, method := splitSignature[0], splitSignature[len(splitSignature)-1]
-
-		tb := &MethodTraceback{
-			Filename:  splitPath[len(splitPath)-1],
-			fullPath:  path,
-			Line:      line,
-			signature: signature,
-			Package:   pkg,
-			Method:    method,
-		}
-		list = append(list, tb)
-	}
-	sort.Slice(list, func(i, j int) bool {
-		return j < i
-	})
-	return list
-}
-
-func buildString(level LogLevel, prefix string, newline, printTime, printTraceback bool, m ...any) string {
+func BuildString(level LogLevel, prefix string, printTime, printTraceback bool, m ...any) string {
 	args := []string{
 		fmt.Sprintf("[%s]", prefix),
 		fmt.Sprintf("[%s]", strings.ToUpper(level.t)),
 	}
 
 	if printTraceback {
-		args = append(args, fmt.Sprintf("[%s]", formatTraceback(getTraceback())))
+		args = append(args, fmt.Sprintf("[%s]", FormatTraceback(getTraceback())))
 	}
 
 	if printTime {
-		args = append(args, fmt.Sprintf("[%s]", formatTime(time.Now())))
+		args = append(args, fmt.Sprintf("[%s]", FormatTime(time.Now())))
 	}
 
 	msg := Map(m, func(el any) string {
 		return fmt.Sprintf("%v", el)
 	})
 	s := fmt.Sprintf("%s %s", strings.Join(args, " "), strings.Join(msg, " "))
-	if newline {
-		s += "\n"
-	}
 	return s
 }
-
-func (l *Logger) print(level LogLevel, m ...any) {
-	if l.level.n < level.n {
-		return
-	}
-
-	tb := getFullTraceback(0)
-	for _, writer := range l.writers {
-		err := writer.Print(level, l.prefix, tb, m...)
-		if err != nil {
-			l.Error(err)
-		}
-	}
-}
-
-// Docker requires "\n" at end to write to log.
-// print not work for docker, otherwise it will work and write into stdout
-func (l *Logger) println(level LogLevel, m ...any) {
-	if l.level.n < level.n {
-		return
-	}
-
-	tb := getFullTraceback(0)
-	for _, writer := range l.writers {
-		err := writer.Print(level, l.prefix, tb, m...)
-		if err != nil {
-			l.Error(err)
-		}
-	}
-}

traceback.go

@@ -0,0 +1,60 @@
+package slog
+
+import (
+	"runtime"
+	"sort"
+	"strings"
+)
+
+func getTraceback() *MethodTraceback {
+	caller, _, _, _ := runtime.Caller(5)
+	details := runtime.FuncForPC(caller)
+	signature := details.Name()
+	path, line := details.FileLine(caller)
+	splitPath := strings.Split(path, "/")
+
+	splitSignature := strings.Split(signature, ".")
+	method := splitSignature[len(splitSignature)-1]
+
+	tb := &MethodTraceback{
+		Filename:  splitPath[len(splitPath)-1],
+		FullPath:  path,
+		Line:      line,
+		Signature: signature,
+		Method:    method,
+	}
+
+	return tb
+}
+func getFullTraceback(skip int) []*MethodTraceback {
+	pc := make([]uintptr, 15)
+	runtime.Callers(skip, pc)
+	list := make([]*MethodTraceback, 0)
+	frames := runtime.CallersFrames(pc)
+	for {
+		frame, more := frames.Next()
+		if !more {
+			break
+		}
+		details := runtime.FuncForPC(frame.PC)
+		signature := details.Name()
+		path, line := details.FileLine(frame.PC)
+		splitPath := strings.Split(path, "/")
+
+		splitSignature := strings.Split(signature, ".")
+		method := splitSignature[len(splitSignature)-1]
+
+		tb := &MethodTraceback{
+			Filename:  splitPath[len(splitPath)-1],
+			FullPath:  path,
+			Line:      line,
+			Signature: signature,
+			Method:    method,
+		}
+		list = append(list, tb)
+	}
+	sort.Slice(list, func(i, j int) bool {
+		return j < i
+	})
+	return list
+}

utils.go

@@ -0,0 +1,9 @@
+package slog
+
+func Map[T, R any](s []T, f func(T) R) []R {
+	out := make([]R, len(s))
+	for i, el := range s {
+		out[i] = f(el)
+	}
+	return out
+}

writers.go

@@ -0,0 +1,134 @@
+package slog
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+type LoggerWriter interface {
+	Close() error
+	Write(p []byte) (n int, err error)
+	Print(level LogLevel, prefix string, traceback []*MethodTraceback, messages ...any) error
+}
+
+type LoggerTextWriter struct {
+	LoggerWriter
+	writer         io.Writer
+	printTraceback bool
+	printTime      bool
+}
+
+func (w *LoggerTextWriter) Write(p []byte) (n int, err error) {
+	n, err = w.writer.Write(p)
+	if err != nil {
+		return n, err
+	}
+	err = bufio.NewWriter(w.writer).Flush()
+	return n, err
+}
+func (w *LoggerTextWriter) Print(level LogLevel, prefix string, _ []*MethodTraceback, messages ...any) error {
+	s := BuildString(level, prefix, w.printTime, w.printTraceback, messages...)
+	_, err := w.Write([]byte(s))
+	return err
+}
+func (w *LoggerTextWriter) Close() error {
+	return w.writer.(io.Closer).Close()
+}
+
+// LoggerJsonWriter write into writer JSON
+type LoggerJsonWriter struct {
+	LoggerWriter
+	writer io.Writer
+	pretty bool
+}
+type LoggerJsonMessage struct {
+	Time      time.Time          `json:"time"`
+	Level     string             `json:"level"`
+	Prefix    string             `json:"prefix"`
+	Message   string             `json:"message"`
+	Traceback []*MethodTraceback `json:"traceback"`
+}
+
+func (w *LoggerJsonWriter) Write(data []byte) (int, error) {
+	n, err := w.writer.Write(data)
+	if err != nil {
+		return n, err
+	}
+	err = bufio.NewWriter(w.writer).Flush()
+	return n, err
+}
+func (w *LoggerJsonWriter) Print(level LogLevel, prefix string, traceback []*MethodTraceback, messages ...any) error {
+	msg := Map(messages, func(el any) string {
+		return fmt.Sprintf("%v", el)
+	})
+	m := LoggerJsonMessage{
+		Time:      time.Now(),
+		Level:     level.GetName(),
+		Prefix:    prefix,
+		Message:   strings.Join(msg, " "),
+		Traceback: traceback,
+	}
+	var data []byte
+	var err error
+	if w.pretty {
+		data, err = json.MarshalIndent(m, "", "  ")
+	} else {
+		data, err = json.Marshal(m)
+	}
+	if err != nil {
+		return err
+	}
+	_, err = w.Write(append(data, []byte("\n")...))
+	return err
+}
+func (w *LoggerJsonWriter) Close() error {
+	return w.writer.(io.Closer).Close()
+}
+
+func CreateTextWriter(w io.Writer, printTraceback, printTime bool) *LoggerTextWriter {
+	writer := &LoggerTextWriter{
+		writer: w, printTraceback: printTraceback, printTime: printTime,
+	}
+	return writer
+}
+func CreateTextFileWriter(path string, printTraceback, printTime bool) (*LoggerTextWriter, error) {
+	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
+	if err != nil {
+		return nil, err
+	}
+	file, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, err
+	}
+	return CreateTextWriter(file, printTraceback, printTime), nil
+}
+func CreateTextStdoutWriter(printTraceback, printTime bool) *LoggerTextWriter {
+	return CreateTextWriter(os.Stdout, printTraceback, printTime)
+}
+
+func CreateJsonWriter(w io.Writer, pretty bool) *LoggerJsonWriter {
+	writer := &LoggerJsonWriter{
+		writer: w, pretty: pretty,
+	}
+	return writer
+}
+func CreateJsonStdoutWriter(pretty bool) *LoggerJsonWriter {
+	return CreateJsonWriter(os.Stdout, pretty)
+}
+func CreateJsonFileWriter(path string, pretty bool) (*LoggerJsonWriter, error) {
+	err := os.MkdirAll(filepath.Dir(path), os.ModePerm)
+	if err != nil {
+		return nil, err
+	}
+	file, err := os.OpenFile(path, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return nil, err
+	}
+	return CreateJsonWriter(file, pretty), nil
+}