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Add a new flag --target to dump command 

Signed-off-by: lou <alex1988@outlook.com>
This commit is contained in:
lou 2024-02-04 17:19:18 +08:00
parent 96518d7c4a
commit 2e460f4fed
1 changed files with 15 additions and 5 deletions
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20
cmd/restic/cmd_dump.go
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@ -17,11 +17,11 @@ import (
var cmdDump = &cobra.Command{ var cmdDump = &cobra.Command{
Use: "dump [flags] snapshotID file", Use: "dump [flags] snapshotID file",
Short: "Print a backed-up file to stdout", Short: "Print a backed-up file to stdout or save it to a file",
Long: ` Long: `
The "dump" command extracts files from a snapshot from the repository. If a The "dump" command extracts files from a snapshot in the repository.
single file is selected, it prints its contents to stdout. Folders are output Use --target to specify the output file; defaults to stdout.
as a tar (default) or zip file containing the contents of the specified folder. Single files are printed directly, while folders are archived as tar (default) or zip.
Pass "/" as file name to dump the whole snapshot as an archive file. Pass "/" as file name to dump the whole snapshot as an archive file.
The special snapshotID "latest" can be used to use the latest snapshot in the The special snapshotID "latest" can be used to use the latest snapshot in the
@ -46,6 +46,7 @@ Exit status is 0 if the command was successful, and non-zero if there was any er
type DumpOptions struct { type DumpOptions struct {
restic.SnapshotFilter restic.SnapshotFilter
Archive string Archive string
Target string
} }
var dumpOptions DumpOptions var dumpOptions DumpOptions
@ -56,6 +57,7 @@ func init() {
flags := cmdDump.Flags() flags := cmdDump.Flags()
initSingleSnapshotFilter(flags, &dumpOptions.SnapshotFilter) initSingleSnapshotFilter(flags, &dumpOptions.SnapshotFilter)
flags.StringVarP(&dumpOptions.Archive, "archive", "a", "tar", "set archive `format` as \"tar\" or \"zip\"") flags.StringVarP(&dumpOptions.Archive, "archive", "a", "tar", "set archive `format` as \"tar\" or \"zip\"")
flags.StringVarP(&dumpOptions.Target, "target", "t", "", "file to write the backed-up file to")
} }
func splitPath(p string) []string { func splitPath(p string) []string {
@ -168,7 +170,15 @@ func runDump(ctx context.Context, opts DumpOptions, gopts GlobalOptions, args []
return errors.Fatalf("loading tree for snapshot %q failed: %v", snapshotIDString, err) return errors.Fatalf("loading tree for snapshot %q failed: %v", snapshotIDString, err)
} }
d := dump.New(opts.Archive, repo, os.Stdout) w := os.Stdout
if opts.Target != "" {
w, err = os.Create(opts.Target)
if err != nil {
return err
}
}
d := dump.New(opts.Archive, repo, w)
err = printFromTree(ctx, tree, repo, "/", splittedPath, d) err = printFromTree(ctx, tree, repo, "/", splittedPath, d)
if err != nil { if err != nil {
return errors.Fatalf("cannot dump file: %v", err) return errors.Fatalf("cannot dump file: %v", err)