Use absolute paths

Thanks windows

main.go

@@ -44,6 +44,7 @@ func (dp *DateParserISO) Parse(s string) (time.Time, error) {
 func main() {
 	flag.Parse()
 	logger.InitFlag()
+	logger.Default = logger.Default.ToFile("dategrouper.log")
 
 	if flag.NArg() == 0 {
 		logger.Error("no files provided")
@@ -57,7 +58,6 @@ func main() {
 
 	files := flag.Args()
 
-
 	cyutils.WithWorkers(10, files, func(worker int, _ int, file string) {
 		workerlog := logger.Default.WithPrefix(fmt.Sprintf("worker=%d", worker))
 		filelog := workerlog.WithPrefix(fmt.Sprintf("file=%q", file))
@@ -69,25 +69,23 @@ func main() {
 		}
 		filelog.Info("date: %s", date)
 
-		datedir := fmt.Sprintf("%04d-%02d-%02d", date.Year(), date.Month(), date.Day())
+		dir := filepath.Dir(file)
-		dest := filepath.Join(datedir, file)
+		datedir := filepath.Join(dir, fmt.Sprintf("%04d-%02d-%02d", date.Year(), date.Month(), date.Day()))
+		dest := filepath.Join(datedir, filepath.Base(file))
 		filelog.Info("dest: %s", dest)
 		err = os.MkdirAll(datedir, 0755)
 		if err != nil {
 			filelog.Error("error creating directory: %s", err)
 			return
 		}
-		// Make sure file doesn't exist
 		destfile, err := os.Stat(dest)
 		if err == nil {
 			filelog.Info("dest file already exists: %s", destfile.Name())
 			return
-		} else {
+		} else if !os.IsNotExist(err) {
-			if !os.IsNotExist(err) {
 			filelog.Error("error checking dest file: %s", err)
 			return
 		}
-		}
 
 		filelog.Debug("opening input file")
 		in, err := os.Open(file)
@@ -99,16 +97,17 @@ func main() {
 		out, err := os.Create(dest)
 		if err != nil {
 			filelog.Error("error creating dest file: %s", err)
+			in.Close()
 			return
 		}
 		filelog.Info("copying file")
 		_, err = io.Copy(out, in)
+		in.Close()
+		out.Close()
 		if err != nil {
 			filelog.Error("error copying file: %s", err)
 			return
 		}
-		in.Close()
-		out.Close()
 
 		filelog.Info("removing original file")
 		err = os.Remove(file)