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dump: Properly handle file paths without / prefix

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filepath.Rel failed if the requested path did not start with a `/` e.g.
`restic` instead of `/restic`.
This commit is contained in:
Michael Eischer 2020-08-30 18:14:54 +02:00
parent e69449bf2c
commit bcf44a9c3f
1 changed files with 6 additions and 6 deletions
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12
cmd/restic/cmd_dump.go
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@ -63,7 +63,7 @@ func splitPath(p string) []string {
return append(s, f) return append(s, f)
} }
func printFromTree(ctx context.Context, tree *restic.Tree, repo restic.Repository, prefix string, pathComponents []string, pathToPrint string) error { func printFromTree(ctx context.Context, tree *restic.Tree, repo restic.Repository, prefix string, pathComponents []string) error {
if tree == nil { if tree == nil {
return fmt.Errorf("called with a nil tree") return fmt.Errorf("called with a nil tree")
@ -78,11 +78,11 @@ func printFromTree(ctx context.Context, tree *restic.Tree, repo restic.Repositor
// If we print / we need to assume that there are multiple nodes at that // If we print / we need to assume that there are multiple nodes at that
// level in the tree. // level in the tree.
if pathToPrint == "/" { if pathComponents[0] == "" {
if err := checkStdoutTar(); err != nil { if err := checkStdoutTar(); err != nil {
return err return err
} }
return dump.WriteTar(ctx, repo, tree, pathToPrint, os.Stdout) return dump.WriteTar(ctx, repo, tree, "/", os.Stdout)
} }
item := filepath.Join(prefix, pathComponents[0]) item := filepath.Join(prefix, pathComponents[0])
@ -98,7 +98,7 @@ func printFromTree(ctx context.Context, tree *restic.Tree, repo restic.Repositor
if err != nil { if err != nil {
return errors.Wrapf(err, "cannot load subtree for %q", item) return errors.Wrapf(err, "cannot load subtree for %q", item)
} }
return printFromTree(ctx, subtree, repo, item, pathComponents[1:], pathToPrint) return printFromTree(ctx, subtree, repo, item, pathComponents[1:])
case dump.IsDir(node): case dump.IsDir(node):
if err := checkStdoutTar(); err != nil { if err := checkStdoutTar(); err != nil {
return err return err
@ -107,7 +107,7 @@ func printFromTree(ctx context.Context, tree *restic.Tree, repo restic.Repositor
if err != nil { if err != nil {
return err return err
} }
return dump.WriteTar(ctx, repo, subtree, pathToPrint, os.Stdout) return dump.WriteTar(ctx, repo, subtree, item, os.Stdout)
case l > 1: case l > 1:
return fmt.Errorf("%q should be a dir, but is a %q", item, node.Type) return fmt.Errorf("%q should be a dir, but is a %q", item, node.Type)
case !dump.IsFile(node): case !dump.IsFile(node):
@ -174,7 +174,7 @@ func runDump(opts DumpOptions, gopts GlobalOptions, args []string) error {
Exitf(2, "loading tree for snapshot %q failed: %v", snapshotIDString, err) Exitf(2, "loading tree for snapshot %q failed: %v", snapshotIDString, err)
} }
err = printFromTree(ctx, tree, repo, "", splittedPath, pathToPrint) err = printFromTree(ctx, tree, repo, "/", splittedPath)
if err != nil { if err != nil {
Exitf(2, "cannot dump file: %v", err) Exitf(2, "cannot dump file: %v", err)
} }