Add CLI Entrance
Emmm Monster
4 years ago
parent
95f613481d
commit
96d3437ff4
@ -0,0 +1,134 @@
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package main
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import (
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"errors"
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"github.com/umlock-music/cli/algo/common"
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_ "github.com/umlock-music/cli/algo/kgm"
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_ "github.com/umlock-music/cli/algo/kwm"
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_ "github.com/umlock-music/cli/algo/ncm"
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_ "github.com/umlock-music/cli/algo/qmc"
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_ "github.com/umlock-music/cli/algo/tm"
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_ "github.com/umlock-music/cli/algo/xm"
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"github.com/umlock-music/cli/internal/logging"
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"github.com/urfave/cli/v2"
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"go.uber.org/zap"
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"log"
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"os"
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"path/filepath"
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"strings"
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)
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func main() {
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app := cli.App{
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Name: "Unlock Music CLI",
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HelpName: "um",
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Usage: "Unlock your encrypted music file https://github.com/unlock-music/cli",
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Version: "v0.0.1",
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Flags: []cli.Flag{
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&cli.StringFlag{Name: "input", Aliases: []string{"i"}, Usage: "path to input file or dir", Required: true},
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&cli.StringFlag{Name: "output", Aliases: []string{"o"}, Usage: "path to output dir", Required: true},
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},
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Action: appMain,
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Copyright: "Copyright (c) 2020 Unlock Music https://github.com/unlock-music/cli/blob/master/LICENSE",
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HideHelpCommand: true,
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UsageText: "um -i /path/to/input -o /path/to/output/dir",
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}
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err := app.Run(os.Args)
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if err != nil {
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log.Fatal(err)
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}
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}
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func appMain(c *cli.Context) error {
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input := c.String("input")
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output := c.String("output")
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inputStat, err := os.Stat(input)
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if err != nil {
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return err
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}
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outputStat, err := os.Stat(output)
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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err = os.MkdirAll(output, 0755)
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}
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if err != nil {
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return err
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}
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} else if !outputStat.IsDir() {
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return errors.New("output should be a writable directory")
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}
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if inputStat.IsDir() {
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return dealDirectory(input, output)
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} else {
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ext := strings.TrimLeft(filepath.Ext(inputStat.Name()), ".")
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allDec := common.GetDecoder(ext)
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if len(allDec) == 0 {
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logging.Log().Fatal("skipping while no suitable decoder")
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}
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return tryDecFile(input, output, allDec)
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}
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}
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func dealDirectory(inputDir string, outputDir string) error {
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items, err := os.ReadDir(inputDir)
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if err != nil {
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return err
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}
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for _, item := range items {
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if item.IsDir() {
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continue
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}
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ext := strings.TrimLeft(filepath.Ext(item.Name()), ".")
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allDec := common.GetDecoder(ext)
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if len(allDec) == 0 {
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logging.Log().Info("skipping while no suitable decoder", zap.String("file", item.Name()))
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continue
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}
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err := tryDecFile(filepath.Join(inputDir, item.Name()), outputDir, allDec)
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if err != nil {
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logging.Log().Error("conversion failed", zap.String("source", item.Name()))
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}
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}
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return nil
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}
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func tryDecFile(inputFile string, outputDir string, allDec []common.NewDecoderFunc) error {
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file, err := os.ReadFile(inputFile)
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if err != nil {
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return err
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}
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var dec common.Decoder
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for _, decFunc := range allDec {
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dec = decFunc(file)
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if err := dec.Validate(); err == nil {
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break
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}
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logging.Log().Warn("try decode failed", zap.Error(err))
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dec = nil
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}
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if dec == nil {
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return errors.New("no any decoder can resolve the file")
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}
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if err := dec.Decode(); err != nil {
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return errors.New("failed while decoding: " + err.Error())
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}
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outExt := dec.GetAudioExt()
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if outExt == "" {
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outExt = "mp3"
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}
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filenameOnly := strings.TrimSuffix(filepath.Base(inputFile), filepath.Ext(inputFile))
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outPath := filepath.Join(outputDir, filenameOnly+"."+outExt)
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err = os.WriteFile(outPath, dec.GetAudioData(), 0644)
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if err != nil {
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return err
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}
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logging.Log().Info("successfully converted",
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zap.String("source", inputFile), zap.String("destination", outPath))
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return nil
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}
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