Implement normalize & try to implement unpack

main.go

@@ -1,11 +1,18 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"os"
+	"os/exec"
 	"path/filepath"
+	"strconv"
+	"strings"
 )
 
+var dryrun bool
+var execCmd string
+
 func main() {
 	args := os.Args[1:]
 	if len(args) == 0 {
@@ -13,32 +20,56 @@ func main() {
 		return
 	}
 
-	switch args[0] {
+	flag.BoolVar(&dryrun, "n", false, "Show what would have been done.")
+	flag.StringVar(&execCmd, "exec", "", "Run commant on matching file.")
+	flag.Parse()
+
+	fmt.Println(execCmd)
+	fmt.Println(dryrun)
+
+	switch flag.Arg(0) {
+	case "normalize":
+		fallthrough
+	case "n":
+		filepath.Walk(".", normalize)
 	case "removesuffix":
 		fallthrough
 	case "rs":
 		suffix := args[1]
+		filepath.Walk(".", removeSuffix(suffix))
 		removeSuffix(suffix)
 		break
+	case "unpack":
+		fallthrough
+	case "up":
+		filepath.Walk(".", unpack)
 	default:
 		fmt.Println("Invalid action specified")
 		return
 	}
 }
 
-func removeSuffix(suffix string) {
-	filepath.Walk(".", removeSuffixFunc(suffix))
+func skipDir(filename string) (bool, error) {
+	if filename == "." || filename == ".." {
+		return true, nil
+	}
+
+	if filename == "Bin" {
+		return true, filepath.SkipDir
+	}
+
+	return false, nil
 }
 
-func removeSuffixFunc(suffix string) filepath.WalkFunc {
+func removeSuffix(suffix string) filepath.WalkFunc {
 	return func(p string, f os.FileInfo, err error) error {
 		filename := f.Name()
-		if filename == "." || filename == ".." {
-			return nil
+		if skip, err := skipDir(filename); skip {
+			return err
 		}
 
 		element := newMediaElement(p)
-		fmt.Println(element.String())
+		fmt.Println(element.Path())
 
 		dir := filepath.Dir(p)
 		ext := filepath.Ext(filename)
@@ -58,3 +89,64 @@ func removeSuffixFunc(suffix string) filepath.WalkFunc {
 		return nil
 	}
 }
+
+func normalize(p string, f os.FileInfo, err error) error {
+	filename := f.Name()
+	if skip, err := skipDir(filename); skip {
+		return err
+	}
+
+	element := newMediaElement(p)
+	newPath := element.Path()
+	if newPath != p {
+		if dryrun {
+			fmt.Printf("Would move %s to %s\n", p, newPath)
+		} else {
+			os.Rename(p, newPath)
+			fmt.Printf("%s => %s\n", p, newPath)
+		}
+	}
+
+	return nil
+}
+
+func unpack(p string, f os.FileInfo, err error) error {
+	filename := f.Name()
+	if skip, err := skipDir(filename); skip {
+		return err
+	}
+
+	ext := filepath.Ext(filename)
+	ext = strings.ToLower(ext)
+	if ext != ".rar" {
+		return nil
+	}
+
+	cmd := exec.Command(execCmd, p)
+	filename = trimSuffix(filename, ext)
+	ext = filepath.Ext(filename)
+	if ext == "" {
+		fmt.Println(p)
+		err := cmd.Run()
+		if err != nil {
+			fmt.Printf("Error executing: %v\n", err)
+		}
+		fmt.Println(p)
+		return nil
+	}
+
+	if strings.HasPrefix(ext, ".part") {
+		ext = ext[5:]
+		part, err := strconv.Atoi(ext)
+		if err == nil && part == 1 {
+			fmt.Println(p)
+			err := cmd.Run()
+			if err != nil {
+				fmt.Printf("Error executing: %v\n", err)
+			}
+			fmt.Println(p)
+			return nil
+		}
+	}
+	return nil
+}