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gitea/modules/git/tree_nogogit.go
Lunny Xiao c03baab678
Refactor the usage of batch catfile (#31754)
When opening a repository, it will call `ensureValidRepository` and also
`CatFileBatch`. But sometimes these will not be used until repository
closed. So it's a waste of CPU to invoke 3 times git command for every
open repository.

This PR removed all of these from `OpenRepository` but only kept
checking whether the folder exists. When a batch is necessary, the
necessary functions will be invoked.
2024-08-20 17:04:57 +00:00

125 lines
3.0 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build !gogit
package git
import (
"io"
"strings"
)
// Tree represents a flat directory listing.
type Tree struct {
ID ObjectID
ResolvedID ObjectID
repo *Repository
// parent tree
ptree *Tree
entries Entries
entriesParsed bool
entriesRecursive Entries
entriesRecursiveParsed bool
}
// ListEntries returns all entries of current tree.
func (t *Tree) ListEntries() (Entries, error) {
if t.entriesParsed {
return t.entries, nil
}
if t.repo != nil {
wr, rd, cancel, err := t.repo.CatFileBatch(t.repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, _ = wr.Write([]byte(t.ID.String() + "\n"))
_, typ, sz, err := ReadBatchLine(rd)
if err != nil {
return nil, err
}
if typ == "commit" {
treeID, err := ReadTreeID(rd, sz)
if err != nil && err != io.EOF {
return nil, err
}
_, _ = wr.Write([]byte(treeID + "\n"))
_, typ, sz, err = ReadBatchLine(rd)
if err != nil {
return nil, err
}
}
if typ == "tree" {
t.entries, err = catBatchParseTreeEntries(t.ID.Type(), t, rd, sz)
if err != nil {
return nil, err
}
t.entriesParsed = true
return t.entries, nil
}
// Not a tree just use ls-tree instead
if err := DiscardFull(rd, sz+1); err != nil {
return nil, err
}
}
stdout, _, runErr := NewCommand(t.repo.Ctx, "ls-tree", "-l").AddDynamicArguments(t.ID.String()).RunStdBytes(&RunOpts{Dir: t.repo.Path})
if runErr != nil {
if strings.Contains(runErr.Error(), "fatal: Not a valid object name") || strings.Contains(runErr.Error(), "fatal: not a tree object") {
return nil, ErrNotExist{
ID: t.ID.String(),
}
}
return nil, runErr
}
var err error
t.entries, err = parseTreeEntries(stdout, t)
if err == nil {
t.entriesParsed = true
}
return t.entries, err
}
// listEntriesRecursive returns all entries of current tree recursively including all subtrees
// extraArgs could be "-l" to get the size, which is slower
func (t *Tree) listEntriesRecursive(extraArgs TrustedCmdArgs) (Entries, error) {
if t.entriesRecursiveParsed {
return t.entriesRecursive, nil
}
stdout, _, runErr := NewCommand(t.repo.Ctx, "ls-tree", "-t", "-r").
AddArguments(extraArgs...).
AddDynamicArguments(t.ID.String()).
RunStdBytes(&RunOpts{Dir: t.repo.Path})
if runErr != nil {
return nil, runErr
}
var err error
t.entriesRecursive, err = parseTreeEntries(stdout, t)
if err == nil {
t.entriesRecursiveParsed = true
}
return t.entriesRecursive, err
}
// ListEntriesRecursiveFast returns all entries of current tree recursively including all subtrees, no size
func (t *Tree) ListEntriesRecursiveFast() (Entries, error) {
return t.listEntriesRecursive(nil)
}
// ListEntriesRecursiveWithSize returns all entries of current tree recursively including all subtrees, with size
func (t *Tree) ListEntriesRecursiveWithSize() (Entries, error) {
return t.listEntriesRecursive(TrustedCmdArgs{"--long"})
}