/
main.go
232 lines (208 loc) · 4.8 KB
/
main.go
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package main
import (
"context"
"fmt"
"log"
"os"
"github.com/urfave/cli/v2"
)
// Custom key for *runner in WithValue context.
type key int
const runnerKey = key(iota)
// readable returns a slice of readable files in the input slice.
func readable(fnames []string) []string {
var ret []string
for _, f := range fnames {
if _, err := os.Stat(f); err == nil {
ret = append(ret, f)
} else {
log.Printf("Note: File %q is not readable. Skipping.", f)
}
}
return ret
}
func main() {
var (
// Command runner.
runCmd runCommand
// Dry-run command runner (only print commands).
fakeRunCmd fakeRunCommand
// This is overriden to fakeRunCmd when using dry-run.
run runner = runCmd
dryrun bool
)
if err := requirements(); err != nil {
log.Fatalf("Requirements check: %v", err)
}
// Plain logs.
log.SetFlags(0)
app := &cli.App{
Name: "mkvtool",
Authors: []*cli.Author{
{
Name: "Marco Paganini",
Email: "paganini@paganini.net",
},
},
Usage: "Easy operations on Matroska containers.",
Version: BuildVersion,
// Global Flags
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "dry-run",
Aliases: []string{"n"},
Value: false,
Usage: "Dry-run mode (only show commands)",
Destination: &dryrun,
},
},
Action: func(c *cli.Context) error {
cli.ShowCommandHelp(c, "")
return nil
},
Before: func(c *cli.Context) error {
// Run will resolve to a print-only version when dry-run is chosen.
if dryrun {
fmt.Println("Dry-run mode: Will not modify any files.")
run = fakeRunCmd
c.Context = context.WithValue(c.Context, runnerKey, &run)
}
return nil
},
}
// Commands.
app.Commands = []*cli.Command{
// merge
{
Name: "merge",
Usage: "Merge input tracks and files (A/V/S) into an output file",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "output",
Aliases: []string{"o"},
Usage: "Output file",
Required: true,
},
&cli.BoolFlag{
Name: "subs",
Usage: "Copy subtitles from original video file",
Value: true,
},
},
Action: actionMerge,
},
// only
{
Name: "only",
Usage: "Remove all subtitle tracks, except one",
ArgsUsage: "input_file output_file",
Flags: []cli.Flag{
&cli.IntFlag{
Name: "track",
Aliases: []string{"t"},
Usage: "Track number to keep",
Required: true,
},
&cli.BoolFlag{
Name: "subs",
Usage: "Copy subtitles from original video file",
Value: true,
},
},
Action: actionOnly,
},
// print
{
Name: "print",
Usage: "Parse input filename and print scene information using a printf style mask.",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "format",
Aliases: []string{"f"},
Value: "%{title}.mkv",
Usage: "Formating mask",
},
},
Action: actionPrint,
},
// remux
{
Name: "remux",
Usage: "Remux input file into an output file",
ArgsUsage: "input_file output_file",
Action: actionRemux,
},
// rename
{
Name: "rename",
Usage: "Rename file based on scene information in filename.",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "format",
Aliases: []string{"f"},
Value: "%{title}.%{container}",
Usage: "Formating mask",
},
},
Action: actionRename,
},
// setdefault
{
Name: "setdefault",
Usage: "Set the default subtitle tag on a track.",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.IntFlag{
Name: "track",
Aliases: []string{"t"},
Usage: "Track Number",
Required: true,
},
},
Action: actionSetDefault,
},
// setdefaultbylang
{
Name: "setdefaultbylang",
Usage: "Set default subtitle track by language.",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.StringSliceFlag{
Name: "lang",
Aliases: []string{"l"},
Usage: "Preferred languages (Use multiple times. Use 'default' for tracks with no language set.)",
Required: true,
},
&cli.StringSliceFlag{
Name: "ignore",
Aliases: []string{"i"},
Usage: "Ignore tracks with this string in the name (can be used multiple times.)",
},
},
Action: actionSetDefaultByLang,
},
// show
{
Name: "show",
Usage: "Show information about files",
ArgsUsage: "FILE(s)...",
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "uid",
Aliases: []string{"u"},
Usage: "Include track UIDs in the output",
},
},
Action: actionShow,
},
}
ctx := context.Background()
ctx = context.WithValue(ctx, runnerKey, &run)
err := app.RunContext(ctx, os.Args)
if err != nil {
log.Fatalln("Execution failed:", err)
}
}