0
Fork 0
mirror of https://codeberg.org/forgejo/forgejo.git synced 2024-12-24 08:06:49 -05:00
forgejo/modules/git/parse.go
Filip Navara 2af67f6044 Improve listing performance by using go-git (#6478)
* Use go-git for tree reading and commit info lookup.

Signed-off-by: Filip Navara <navara@emclient.com>

* Use TreeEntry.IsRegular() instead of ObjectType that was removed.

Signed-off-by: Filip Navara <navara@emclient.com>

* Use the treePath to optimize commit info search.

Signed-off-by: Filip Navara <navara@emclient.com>

* Extract the latest commit at treePath along with the other commits.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix listing commit info for a directory that was created in one commit and never modified after.

Signed-off-by: Filip Navara <navara@emclient.com>

* Avoid nearly all external 'git' invocations when doing directory listing (.editorconfig code path is still hit).

Signed-off-by: Filip Navara <navara@emclient.com>

* Use go-git for reading blobs.

Signed-off-by: Filip Navara <navara@emclient.com>

* Make SHA1 type alias for plumbing.Hash in go-git.

Signed-off-by: Filip Navara <navara@emclient.com>

* Make Signature type alias for object.Signature in go-git.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix GetCommitsInfo for repository with only one commit.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix PGP signature verification.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix issues with walking commit graph across merges.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix typo in condition.

Signed-off-by: Filip Navara <navara@emclient.com>

* Speed up loading branch list by keeping the repository reference (and thus all the loaded packfile indexes).

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix lising submodules.

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix build

Signed-off-by: Filip Navara <navara@emclient.com>

* Add back commit cache because of name-rev

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix tests

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix code style

* Fix spelling

* Address PR feedback

Signed-off-by: Filip Navara <navara@emclient.com>

* Update vendor module list

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix getting trees by commit id

Signed-off-by: Filip Navara <navara@emclient.com>

* Fix remaining unit test failures

* Fix GetTreeBySHA

* Avoid running `git name-rev` if not necessary

Signed-off-by: Filip Navara <navara@emclient.com>

* Move Branch code to git module

* Clean up GPG signature verification and fix it for tagged commits

* Address PR feedback (import formatting, copyright headers)

* Make blob lookup by SHA working

* Update tests to use public API

* Allow getting content from any type of object through the blob interface

* Change test to actually expect the object content that is in the GIT repository

* Change one more test to actually expect the object content that is in the GIT repository

* Add comments
2019-04-19 20:17:27 +08:00

82 lines
2.4 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package git
import (
"bytes"
"fmt"
"strconv"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/filemode"
"gopkg.in/src-d/go-git.v4/plumbing/object"
)
// ParseTreeEntries parses the output of a `git ls-tree` command.
func ParseTreeEntries(data []byte) ([]*TreeEntry, error) {
return parseTreeEntries(data, nil)
}
func parseTreeEntries(data []byte, ptree *Tree) ([]*TreeEntry, error) {
entries := make([]*TreeEntry, 0, 10)
for pos := 0; pos < len(data); {
// expect line to be of the form "<mode> <type> <sha>\t<filename>"
entry := new(TreeEntry)
entry.gogitTreeEntry = &object.TreeEntry{}
entry.ptree = ptree
if pos+6 > len(data) {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
switch string(data[pos : pos+6]) {
case "100644":
entry.gogitTreeEntry.Mode = filemode.Regular
pos += 12 // skip over "100644 blob "
case "100755":
entry.gogitTreeEntry.Mode = filemode.Executable
pos += 12 // skip over "100755 blob "
case "120000":
entry.gogitTreeEntry.Mode = filemode.Symlink
pos += 12 // skip over "120000 blob "
case "160000":
entry.gogitTreeEntry.Mode = filemode.Submodule
pos += 14 // skip over "160000 object "
case "040000":
entry.gogitTreeEntry.Mode = filemode.Dir
pos += 12 // skip over "040000 tree "
default:
return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+6]))
}
if pos+40 > len(data) {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
id, err := NewIDFromString(string(data[pos : pos+40]))
if err != nil {
return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
}
entry.ID = id
entry.gogitTreeEntry.Hash = plumbing.Hash(id)
pos += 41 // skip over sha and trailing space
end := pos + bytes.IndexByte(data[pos:], '\n')
if end < pos {
return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
}
// In case entry name is surrounded by double quotes(it happens only in git-shell).
if data[pos] == '"' {
entry.gogitTreeEntry.Name, err = strconv.Unquote(string(data[pos:end]))
if err != nil {
return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
}
} else {
entry.gogitTreeEntry.Name = string(data[pos:end])
}
pos = end + 1
entries = append(entries, entry)
}
return entries, nil
}