0.1.0

README.md

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+RNMR
+====
+
+Easily rename files based on its creation date.
+
+```
+git clone https://github.com/fmartingr/rnmr.git
+go build
+./rnmr -h
+```

main.go

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+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+const defaultAllowedExtensions = "jpg,jpeg,png,gif,avi,mp4,mov"
+
+var extensions = flag.String("extensions", defaultAllowedExtensions, "Comma separated extensions to allow")
+
+func stringInSlice(a string, list []string) bool {
+	for _, b := range list {
+		if b == a {
+			return true
+		}
+	}
+	return false
+}
+
+func isValidFile(extension string) bool {
+	allowedExtensions := strings.Split(*extensions, ",")
+	return stringInSlice(extension[1:], allowedExtensions)
+}
+
+func readDir(path string, f os.FileInfo, err error) error {
+	extension := filepath.Ext(f.Name())
+	if !f.IsDir() && extension != "" && isValidFile(extension) {
+		filenameDate := f.ModTime().Format("2006-01-02_15-04-05")
+		newPath := filepath.Dir(path) + "/" + filenameDate + extension
+		if path != newPath {
+			fmt.Printf("%s => %s\n", path, newPath)
+			err := os.Rename(path, newPath)
+			if err != nil {
+				panic(err)
+			}
+		}
+	}
+	return nil
+}
+
+func main() {
+	flag.Parse()
+
+	path, err := filepath.Abs(filepath.Dir(os.Args[0]))
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Printf("Walking by %s...\n", path)
+
+	err2 := filepath.Walk(path, readDir)
+	if err2 != nil {
+		panic(err2)
+	}
+}