Rename radio shows downloaded from BBC iPlayer with get_iplayer to have human-friendly filenames

mviplayer.go

package main

// This is a quick Go program to rename radio shows downloaded from BBC iPlayer
// by removing the program IDs and _original from the end of the filename
// and converting underscores to spaces.

// Copyright status: WTFPL http://www.wtfpl.net

import (
	"fmt"
	"os"
	"path/filepath"
	"regexp"
	"strings"
)

var crudRemove = regexp.MustCompile(`_[a-z0-9]+_(original|default)`)

func renamer(fspc string, info os.FileInfo, err error) error {
	if err != nil {
		fmt.Printf("%s: %s", fspc, err)
		return err
	}
	if crudRemove.FindString(fspc) != "" {
		x := crudRemove.ReplaceAllString(fspc, "")
		newfspc := strings.Replace(x, "_", " ", -1)
		fmt.Printf("%s → %s\n", fspc, newfspc)
		err := os.Rename(fspc, newfspc)
		return err
	}
	return nil
}

func main() {
	for _, fspc := range os.Args[1:] {
		err := filepath.Walk(fspc, renamer)
		if err != nil {
			fmt.Printf("%s: %s", fspc, err)
		}
	}
}