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logger.go
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logger.go
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package minilog
import (
"fmt"
"runtime"
"strconv"
"strings"
)
type logger interface {
Println(...interface{})
}
type minilogger struct {
// embed
logger
Level Level
Color bool // print in color
filters []string
}
func (l *minilogger) prologue(level Level, name string) (msg string) {
switch level {
case DEBUG:
msg += "DEBUG "
case INFO:
msg += "INFO "
case WARN:
msg += "WARN "
case ERROR:
msg += "ERROR "
default:
msg += "FATAL "
}
if name == "" {
_, file, line, _ := runtime.Caller(4)
short := file
for i := len(file) - 1; i > 0; i-- {
if file[i] == '/' {
short = file[i+1:]
break
}
}
msg += short + ":" + strconv.Itoa(line) + ": "
} else {
msg += name + ": "
}
if l.Color {
msg = colorLine + msg
switch level {
case DEBUG:
msg += colorDebug
case INFO:
msg += colorInfo
case WARN:
msg += colorWarn
case ERROR:
msg += colorError
default:
msg += colorFatal
}
}
return
}
func (l *minilogger) epilogue() string {
if l.Color {
return Reset
}
return ""
}
func (l *minilogger) log(level Level, name, format string, arg ...interface{}) {
msg := l.prologue(level, name) + fmt.Sprintf(format, arg...) + l.epilogue()
for _, f := range l.filters {
if strings.Contains(msg, f) {
return
}
}
l.Println(msg)
}
func (l *minilogger) logln(level Level, name string, arg ...interface{}) {
msg := l.prologue(level, name) + fmt.Sprint(arg...) + l.epilogue()
for _, f := range l.filters {
if strings.Contains(msg, f) {
return
}
}
l.Println(msg)
}