forked from Shiloh/githaven
c08e42c47e
Close #20315 (fix the panic when parsing invalid input), Speed up #20231 (use ls-tree without size field) Introduce ListEntriesRecursiveFast (ls-tree without size) and ListEntriesRecursiveWithSize (ls-tree with size)
134 lines
3.2 KiB
Go
134 lines
3.2 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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//go:build !gogit
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package git
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import (
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"io"
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"math"
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"strings"
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)
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// Tree represents a flat directory listing.
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type Tree struct {
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ID SHA1
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ResolvedID SHA1
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repo *Repository
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// parent tree
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ptree *Tree
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entries Entries
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entriesParsed bool
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entriesRecursive Entries
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entriesRecursiveParsed bool
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}
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// ListEntries returns all entries of current tree.
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func (t *Tree) ListEntries() (Entries, error) {
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if t.entriesParsed {
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return t.entries, nil
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}
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if t.repo != nil {
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wr, rd, cancel := t.repo.CatFileBatch(t.repo.Ctx)
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defer cancel()
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_, _ = wr.Write([]byte(t.ID.String() + "\n"))
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_, typ, sz, err := ReadBatchLine(rd)
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if err != nil {
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return nil, err
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}
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if typ == "commit" {
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treeID, err := ReadTreeID(rd, sz)
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if err != nil && err != io.EOF {
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return nil, err
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}
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_, _ = wr.Write([]byte(treeID + "\n"))
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_, typ, sz, err = ReadBatchLine(rd)
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if err != nil {
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return nil, err
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}
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}
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if typ == "tree" {
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t.entries, err = catBatchParseTreeEntries(t, rd, sz)
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if err != nil {
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return nil, err
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}
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t.entriesParsed = true
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return t.entries, nil
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}
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// Not a tree just use ls-tree instead
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for sz > math.MaxInt32 {
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discarded, err := rd.Discard(math.MaxInt32)
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sz -= int64(discarded)
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if err != nil {
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return nil, err
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}
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}
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for sz > 0 {
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discarded, err := rd.Discard(int(sz))
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sz -= int64(discarded)
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if err != nil {
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return nil, err
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}
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}
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}
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stdout, _, runErr := NewCommand(t.repo.Ctx, "ls-tree", "-l", t.ID.String()).RunStdBytes(&RunOpts{Dir: t.repo.Path})
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if runErr != nil {
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if strings.Contains(runErr.Error(), "fatal: Not a valid object name") || strings.Contains(runErr.Error(), "fatal: not a tree object") {
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return nil, ErrNotExist{
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ID: t.ID.String(),
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}
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}
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return nil, runErr
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}
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var err error
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t.entries, err = parseTreeEntries(stdout, t)
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if err == nil {
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t.entriesParsed = true
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}
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return t.entries, err
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}
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// listEntriesRecursive returns all entries of current tree recursively including all subtrees
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// extraArgs could be "-l" to get the size, which is slower
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func (t *Tree) listEntriesRecursive(extraArgs ...string) (Entries, error) {
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if t.entriesRecursiveParsed {
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return t.entriesRecursive, nil
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}
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args := append([]string{"ls-tree", "-t", "-r"}, extraArgs...)
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args = append(args, t.ID.String())
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stdout, _, runErr := NewCommand(t.repo.Ctx, args...).RunStdBytes(&RunOpts{Dir: t.repo.Path})
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if runErr != nil {
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return nil, runErr
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}
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var err error
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t.entriesRecursive, err = parseTreeEntries(stdout, t)
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if err == nil {
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t.entriesRecursiveParsed = true
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}
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return t.entriesRecursive, err
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}
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// ListEntriesRecursiveFast returns all entries of current tree recursively including all subtrees, no size
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func (t *Tree) ListEntriesRecursiveFast() (Entries, error) {
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return t.listEntriesRecursive()
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}
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// ListEntriesRecursiveWithSize returns all entries of current tree recursively including all subtrees, with size
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func (t *Tree) ListEntriesRecursiveWithSize() (Entries, error) {
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return t.listEntriesRecursive("--long")
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}
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