🐛 fix: log file path parse maybe error on Windows

.gitignore

@@ -15,6 +15,7 @@
 # Test binary, build with `go test -c`
 *.test
 *.log.*
+*~
 
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out

rotatefile/writer.go

@@ -6,6 +6,7 @@ import (
 	"math/rand"
 	"os"
 	"path"
+	"path/filepath"
 	"sort"
 	"strings"
 	"sync"
@@ -62,7 +63,7 @@ func NewWriterWith(fns ...ConfigFn) (*Writer, error) {
 // init rotate dispatcher
 func (d *Writer) init() error {
 	logfile := d.cfg.Filepath
-	d.fileDir = path.Dir(logfile)
+	d.fileDir = filepath.Dir(logfile)
 	d.backupDur = d.cfg.backupDuration()
 
 	// if d.cfg.BackupNum > 0 {
@@ -314,10 +315,14 @@ func (d *Writer) Clean() (err error) {
 
 	// oldFiles: xx.log.yy files, no gz file
 	var oldFiles, gzFiles []fileInfo
-	fileDir, fileName := path.Split(d.cfg.Filepath)
+	fileDir, fileName := filepath.Split(d.cfg.Filepath)
+	if len(fileDir) > 0 {
+		// removes the trailing separator
+		fileDir = fileDir[:len(fileDir)-1]
+	}
 
 	// find and clean old files
-	err = fsutil.FindInDir(fileDir[:len(fileDir)-1], func(fPath string, ent fs.DirEntry) error {
+	err = fsutil.FindInDir(fileDir, func(fPath string, ent fs.DirEntry) error {
 		fi, err := ent.Info()
 		if err != nil {
 			return err

util.go

@@ -3,7 +3,7 @@ package slog
 import (
 	"fmt"
 	"os"
-	"path"
+	"path/filepath"
 	"runtime"
 	"strconv"
 	"strings"
@@ -47,7 +47,7 @@ func formatCaller(rf *runtime.Frame, flag uint8) (cs string) {
 	lineNum := strconv.FormatInt(int64(rf.Line), 10)
 	switch flag {
 	case CallerFlagFull:
-		return rf.Function + "," + path.Base(rf.File) + ":" + lineNum
+		return rf.Function + "," + filepath.Base(rf.File) + ":" + lineNum
 	case CallerFlagFunc:
 		return rf.Function
 	case CallerFlagFcLine:
@@ -59,12 +59,12 @@ func formatCaller(rf *runtime.Frame, flag uint8) (cs string) {
 	case CallerFlagPkgFnl:
 		i := strings.LastIndex(rf.Function, "/")
 		i += strings.IndexByte(rf.Function[i+1:], '.')
-		return rf.Function[:i+1] + "," + path.Base(rf.File) + ":" + lineNum
+		return rf.Function[:i+1] + "," + filepath.Base(rf.File) + ":" + lineNum
 	case CallerFlagFnlFcn:
 		ss := strings.Split(rf.Function, ".")
-		return path.Base(rf.File) + ":" + lineNum + "," + ss[len(ss)-1]
+		return filepath.Base(rf.File) + ":" + lineNum + "," + ss[len(ss)-1]
 	case CallerFlagFnLine:
-		return path.Base(rf.File) + ":" + lineNum
+		return filepath.Base(rf.File) + ":" + lineNum
 	case CallerFlagFcName:
 		ss := strings.Split(rf.Function, ".")
 		return ss[len(ss)-1]