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forgejo/modules/git/repo_commit_nogogit.go
zeripath 01087e9eef
Make Requests Processes and create process hierarchy. Associate OpenRepository with context. ()
This PR registers requests with the process manager and manages hierarchy within the processes.

Git repos are then associated with a context, (usually the request's context) - with sub commands using this context as their base context.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-11-30 20:06:32 +00:00

150 lines
3.5 KiB
Go

// Copyright 2020 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.
//go:build !gogit
// +build !gogit
package git
import (
"bufio"
"errors"
"io"
"strings"
"code.gitea.io/gitea/modules/log"
)
// ResolveReference resolves a name to a reference
func (repo *Repository) ResolveReference(name string) (string, error) {
stdout, err := NewCommandContext(repo.Ctx, "show-ref", "--hash", name).RunInDir(repo.Path)
if err != nil {
if strings.Contains(err.Error(), "not a valid ref") {
return "", ErrNotExist{name, ""}
}
return "", err
}
stdout = strings.TrimSpace(stdout)
if stdout == "" {
return "", ErrNotExist{name, ""}
}
return stdout, nil
}
// GetRefCommitID returns the last commit ID string of given reference (branch or tag).
func (repo *Repository) GetRefCommitID(name string) (string, error) {
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
defer cancel()
_, _ = wr.Write([]byte(name + "\n"))
shaBs, _, _, err := ReadBatchLine(rd)
if IsErrNotExist(err) {
return "", ErrNotExist{name, ""}
}
return string(shaBs), nil
}
// IsCommitExist returns true if given commit exists in current repository.
func (repo *Repository) IsCommitExist(name string) bool {
_, err := NewCommandContext(repo.Ctx, "cat-file", "-e", name).RunInDir(repo.Path)
return err == nil
}
func (repo *Repository) getCommit(id SHA1) (*Commit, error) {
wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
defer cancel()
_, _ = wr.Write([]byte(id.String() + "\n"))
return repo.getCommitFromBatchReader(rd, id)
}
func (repo *Repository) getCommitFromBatchReader(rd *bufio.Reader, id SHA1) (*Commit, error) {
_, typ, size, err := ReadBatchLine(rd)
if err != nil {
if errors.Is(err, io.EOF) || IsErrNotExist(err) {
return nil, ErrNotExist{ID: id.String()}
}
return nil, err
}
switch typ {
case "missing":
return nil, ErrNotExist{ID: id.String()}
case "tag":
// then we need to parse the tag
// and load the commit
data, err := io.ReadAll(io.LimitReader(rd, size))
if err != nil {
return nil, err
}
_, err = rd.Discard(1)
if err != nil {
return nil, err
}
tag, err := parseTagData(data)
if err != nil {
return nil, err
}
tag.repo = repo
commit, err := tag.Commit()
if err != nil {
return nil, err
}
commit.CommitMessage = strings.TrimSpace(tag.Message)
commit.Author = tag.Tagger
commit.Signature = tag.Signature
return commit, nil
case "commit":
commit, err := CommitFromReader(repo, id, io.LimitReader(rd, size))
if err != nil {
return nil, err
}
_, err = rd.Discard(1)
if err != nil {
return nil, err
}
return commit, nil
default:
log.Debug("Unknown typ: %s", typ)
_, err = rd.Discard(int(size) + 1)
if err != nil {
return nil, err
}
return nil, ErrNotExist{
ID: id.String(),
}
}
}
// ConvertToSHA1 returns a Hash object from a potential ID string
func (repo *Repository) ConvertToSHA1(commitID string) (SHA1, error) {
if len(commitID) == 40 && SHAPattern.MatchString(commitID) {
sha1, err := NewIDFromString(commitID)
if err == nil {
return sha1, nil
}
}
wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
defer cancel()
_, err := wr.Write([]byte(commitID + "\n"))
if err != nil {
return SHA1{}, err
}
sha, _, _, err := ReadBatchLine(rd)
if err != nil {
if IsErrNotExist(err) {
return SHA1{}, ErrNotExist{commitID, ""}
}
return SHA1{}, err
}
return MustIDFromString(string(sha)), nil
}