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restic/cmd/restic/cmd_ls.go
2017-12-06 05:48:39 -05:00

93 lines
2.6 KiB
Go

package main
import (
"context"
"path/filepath"
"github.com/spf13/cobra"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/repository"
"github.com/restic/restic/internal/restic"
)
var cmdLs = &cobra.Command{
Use: "ls [flags] [snapshot-ID ...]",
Short: "List files in a snapshot",
Long: `
The "ls" command allows listing files and directories in a snapshot.
The special snapshot-ID "latest" can be used to list files and directories of the latest snapshot in the repository.
`,
DisableAutoGenTag: true,
RunE: func(cmd *cobra.Command, args []string) error {
return runLs(lsOptions, globalOptions, args)
},
}
// LsOptions collects all options for the ls command.
type LsOptions struct {
ListLong bool
Host string
Tags restic.TagLists
Paths []string
}
var lsOptions LsOptions
func init() {
cmdRoot.AddCommand(cmdLs)
flags := cmdLs.Flags()
flags.BoolVarP(&lsOptions.ListLong, "long", "l", false, "use a long listing format showing size and mode")
flags.StringVarP(&lsOptions.Host, "host", "H", "", "only consider snapshots for this `host`, when no snapshot ID is given")
flags.Var(&lsOptions.Tags, "tag", "only consider snapshots which include this `taglist`, when no snapshot ID is given")
flags.StringArrayVar(&lsOptions.Paths, "path", nil, "only consider snapshots which include this (absolute) `path`, when no snapshot ID is given")
}
func printTree(ctx context.Context, repo *repository.Repository, id *restic.ID, prefix string) error {
tree, err := repo.LoadTree(ctx, *id)
if err != nil {
return err
}
for _, entry := range tree.Nodes {
Printf("%s\n", formatNode(prefix, entry, lsOptions.ListLong))
if entry.Type == "dir" && entry.Subtree != nil {
if err = printTree(ctx, repo, entry.Subtree, filepath.Join(prefix, entry.Name)); err != nil {
return err
}
}
}
return nil
}
func runLs(opts LsOptions, gopts GlobalOptions, args []string) error {
if len(args) == 0 && opts.Host == "" && len(opts.Tags) == 0 && len(opts.Paths) == 0 {
return errors.Fatal("Invalid arguments, either give one or more snapshot IDs or set filters.")
}
repo, err := OpenRepository(gopts)
if err != nil {
return err
}
if err = repo.LoadIndex(gopts.ctx); err != nil {
return err
}
ctx, cancel := context.WithCancel(gopts.ctx)
defer cancel()
for sn := range FindFilteredSnapshots(ctx, repo, opts.Host, opts.Tags, opts.Paths, args) {
Verbosef("snapshot %s of %v at %s):\n", sn.ID().Str(), sn.Paths, sn.Time)
if err = printTree(gopts.ctx, repo, sn.Tree, string(filepath.Separator)); err != nil {
return err
}
}
return nil
}