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find: Use walker.Walk

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This commit is contained in:
Alexander Neumann 2018-06-09 18:56:40 +02:00
parent 3a86f4852b
commit 081743d0a5
3 changed files with 62 additions and 71 deletions
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119
cmd/restic/cmd_find.go
View file

@ -3,7 +3,6 @@ package main
import (
"context"
"encoding/json"
"path"
"strings"
"time"
@ -11,7 +10,9 @@ import (
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/filter"
"github.com/restic/restic/internal/restic"
"github.com/restic/restic/internal/walker"
)
var cmdFind = &cobra.Command{
@ -94,7 +95,7 @@ type statefulOutput struct {
hits int
}
func (s *statefulOutput) PrintJSON(prefix string, node *restic.Node) {
func (s *statefulOutput) PrintJSON(path string, node *restic.Node) {
type findNode restic.Node
b, err := json.Marshal(struct {
// Add these attributes
@ -111,7 +112,7 @@ func (s *statefulOutput) PrintJSON(prefix string, node *restic.Node) {
Content byte `json:"content,omitempty"`
Subtree byte `json:"subtree,omitempty"`
}{
Path: path.Join(prefix, node.Name),
Path: path,
Permissions: node.Mode.String(),
findNode: (*findNode)(node),
})
@ -138,7 +139,7 @@ func (s *statefulOutput) PrintJSON(prefix string, node *restic.Node) {
s.hits++
}
func (s *statefulOutput) PrintNormal(prefix string, node *restic.Node) {
func (s *statefulOutput) PrintNormal(path string, node *restic.Node) {
if s.newsn != s.oldsn {
if s.oldsn != nil {
Verbosef("\n")
@ -146,14 +147,14 @@ func (s *statefulOutput) PrintNormal(prefix string, node *restic.Node) {
s.oldsn = s.newsn
Verbosef("Found matching entries in snapshot %s\n", s.oldsn.ID().Str())
}
Printf(formatNode(prefix, node, s.ListLong) + "\n")
Printf(formatNode(path, node, s.ListLong) + "\n")
}
func (s *statefulOutput) Print(prefix string, node *restic.Node) {
func (s *statefulOutput) Print(path string, node *restic.Node) {
if s.JSON {
s.PrintJSON(prefix, node)
s.PrintJSON(path, node)
} else {
s.PrintNormal(prefix, node)
s.PrintNormal(path, node)
}
}
@ -174,83 +175,75 @@ func (s *statefulOutput) Finish() {
// Finder bundles information needed to find a file or directory.
type Finder struct {
repo restic.Repository
pat findPattern
out statefulOutput
notfound restic.IDSet
repo restic.Repository
pat findPattern
out statefulOutput
ignoreTrees restic.IDSet
}
// findInTree traverses a tree and outputs matches. foundInSubtree is true if
// some match has been found within some subtree. If err is non-nil, the value
// of foundInSubtree is invalid.
func (f *Finder) findInTree(ctx context.Context, treeID restic.ID, prefix string) (foundInSubtree bool, err error) {
if f.notfound.Has(treeID) {
debug.Log("%v skipping tree %v, has already been checked", prefix, treeID)
return false, nil
func (f *Finder) findInSnapshot(ctx context.Context, sn *restic.Snapshot) error {
debug.Log("searching in snapshot %s\n for entries within [%s %s]", sn.ID(), f.pat.oldest, f.pat.newest)
if sn.Tree == nil {
return errors.Errorf("snapshot %v has no tree", sn.ID().Str())
}
debug.Log("%v checking tree %v\n", prefix, treeID)
f.out.newsn = sn
return walker.Walk(ctx, f.repo, *sn.Tree, f.ignoreTrees, func(nodepath string, node *restic.Node, err error) (bool, error) {
if err != nil {
return false, err
}
tree, err := f.repo.LoadTree(ctx, treeID)
if err != nil {
return false, err
}
var found bool
for _, node := range tree.Nodes {
debug.Log(" testing entry %q\n", node.Name)
if node == nil {
return false, nil
}
name := node.Name
if f.pat.ignoreCase {
name = strings.ToLower(name)
}
m, err := path.Match(f.pat.pattern, name)
foundMatch, err := filter.Match(f.pat.pattern, nodepath)
if err != nil {
return false, err
}
if m {
if !f.pat.oldest.IsZero() && node.ModTime.Before(f.pat.oldest) {
debug.Log(" ModTime is older than %s\n", f.pat.oldest)
continue
}
if !f.pat.newest.IsZero() && node.ModTime.After(f.pat.newest) {
debug.Log(" ModTime is newer than %s\n", f.pat.newest)
continue
}
debug.Log(" found match\n")
found = true
f.out.Print(prefix, node)
}
var (
ignoreIfNoMatch = true
errIfNoMatch error
)
if node.Type == "dir" {
foundSubtree, err := f.findInTree(ctx, *node.Subtree, path.Join(prefix, node.Name))
childMayMatch, err := filter.ChildMatch(f.pat.pattern, nodepath)
if err != nil {
return false, err
}
if foundSubtree {
found = true
if !childMayMatch {
ignoreIfNoMatch = true
errIfNoMatch = walker.SkipNode
} else {
ignoreIfNoMatch = false
}
}
}
if !found {
f.notfound.Insert(treeID)
}
if !foundMatch {
return ignoreIfNoMatch, errIfNoMatch
}
return found, nil
}
if !f.pat.oldest.IsZero() && node.ModTime.Before(f.pat.oldest) {
debug.Log(" ModTime is older than %s\n", f.pat.oldest)
return ignoreIfNoMatch, errIfNoMatch
}
func (f *Finder) findInSnapshot(ctx context.Context, sn *restic.Snapshot) error {
debug.Log("searching in snapshot %s\n for entries within [%s %s]", sn.ID(), f.pat.oldest, f.pat.newest)
if !f.pat.newest.IsZero() && node.ModTime.After(f.pat.newest) {
debug.Log(" ModTime is newer than %s\n", f.pat.newest)
return ignoreIfNoMatch, errIfNoMatch
}
f.out.newsn = sn
_, err := f.findInTree(ctx, *sn.Tree, "/")
return err
debug.Log(" found match\n")
f.out.Print(nodepath, node)
return false, nil
})
}
func runFind(opts FindOptions, gopts GlobalOptions, args []string) error {
@ -298,10 +291,10 @@ func runFind(opts FindOptions, gopts GlobalOptions, args []string) error {
defer cancel()
f := &Finder{
repo: repo,
pat: pat,
out: statefulOutput{ListLong: opts.ListLong, JSON: globalOptions.JSON},
notfound: restic.NewIDSet(),
repo: repo,
pat: pat,
out: statefulOutput{ListLong: opts.ListLong, JSON: globalOptions.JSON},
ignoreTrees: restic.NewIDSet(),
}
for sn := range FindFilteredSnapshots(ctx, repo, opts.Host, opts.Tags, opts.Paths, opts.Snapshots) {
if err = f.findInSnapshot(ctx, sn); err != nil {

6
cmd/restic/cmd_ls.go
View file

@ -2,7 +2,7 @@ package main
import (
"context"
"path/filepath"
"path"
"github.com/spf13/cobra"
@ -53,10 +53,10 @@ func printTree(ctx context.Context, repo *repository.Repository, id *restic.ID,
}
for _, entry := range tree.Nodes {
Printf("%s\n", formatNode(prefix, entry, lsOptions.ListLong))
entryPath := path.Join(prefix, entry.Name)
Printf("%s\n", formatNode(entryPath, entry, lsOptions.ListLong))
if entry.Type == "dir" && entry.Subtree != nil {
entryPath := prefix + string(filepath.Separator) + entry.Name
if err = printTree(ctx, repo, entry.Subtree, entryPath); err != nil {
return err
}

8
cmd/restic/format.go
View file

@ -3,7 +3,6 @@ package main
import (
"fmt"
"os"
"path"
"time"
"github.com/restic/restic/internal/restic"
@ -63,10 +62,9 @@ func formatDuration(d time.Duration) string {
return formatSeconds(sec)
}
func formatNode(prefix string, n *restic.Node, long bool) string {
nodepath := path.Join(prefix, n.Name)
func formatNode(path string, n *restic.Node, long bool) string {
if !long {
return nodepath
return path
}
var mode os.FileMode
@ -92,6 +90,6 @@ func formatNode(prefix string, n *restic.Node, long bool) string {
return fmt.Sprintf("%s %5d %5d %6d %s %s%s",
mode|n.Mode, n.UID, n.GID, n.Size,
n.ModTime.Format(TimeFormat), nodepath,
n.ModTime.Format(TimeFormat), path,
target)
}