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forgejo/modules/git/repo.go
wxiaoguang dfa4e5857f
Fix git 2.11 error when checking IsEmpty (again) (#27399)
Follow  #27393

Sorry that I made a mistake in #27393. The `errbuf` is not empty when
the err is `exit status 129`.
2023-10-02 15:59:39 +00:00

310 lines
8.7 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"bytes"
"context"
"fmt"
"io"
"net/url"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"time"
"code.gitea.io/gitea/modules/proxy"
"code.gitea.io/gitea/modules/util"
)
// GPGSettings represents the default GPG settings for this repository
type GPGSettings struct {
Sign bool
KeyID string
Email string
Name string
PublicKeyContent string
}
const prettyLogFormat = `--pretty=format:%H`
// GetAllCommitsCount returns count of all commits in repository
func (repo *Repository) GetAllCommitsCount() (int64, error) {
return AllCommitsCount(repo.Ctx, repo.Path, false)
}
func (repo *Repository) parsePrettyFormatLogToList(logs []byte) ([]*Commit, error) {
var commits []*Commit
if len(logs) == 0 {
return commits, nil
}
parts := bytes.Split(logs, []byte{'\n'})
for _, commitID := range parts {
commit, err := repo.GetCommit(string(commitID))
if err != nil {
return nil, err
}
commits = append(commits, commit)
}
return commits, nil
}
// IsRepoURLAccessible checks if given repository URL is accessible.
func IsRepoURLAccessible(ctx context.Context, url string) bool {
_, _, err := NewCommand(ctx, "ls-remote", "-q", "-h").AddDynamicArguments(url, "HEAD").RunStdString(nil)
return err == nil
}
// InitRepository initializes a new Git repository.
func InitRepository(ctx context.Context, repoPath string, bare bool) error {
err := os.MkdirAll(repoPath, os.ModePerm)
if err != nil {
return err
}
cmd := NewCommand(ctx, "init")
if bare {
cmd.AddArguments("--bare")
}
_, _, err = cmd.RunStdString(&RunOpts{Dir: repoPath})
return err
}
// IsEmpty Check if repository is empty.
func (repo *Repository) IsEmpty() (bool, error) {
var errbuf, output strings.Builder
if err := NewCommand(repo.Ctx).AddOptionFormat("--git-dir=%s", repo.Path).AddArguments("rev-list", "-n", "1", "--all").
Run(&RunOpts{
Dir: repo.Path,
Stdout: &output,
Stderr: &errbuf,
}); err != nil {
if (err.Error() == "exit status 1" && strings.TrimSpace(errbuf.String()) == "") || err.Error() == "exit status 129" {
// git 2.11 exits with 129 if the repo is empty
return true, nil
}
return true, fmt.Errorf("check empty: %w - %s", err, errbuf.String())
}
return strings.TrimSpace(output.String()) == "", nil
}
// CloneRepoOptions options when clone a repository
type CloneRepoOptions struct {
Timeout time.Duration
Mirror bool
Bare bool
Quiet bool
Branch string
Shared bool
NoCheckout bool
Depth int
Filter string
SkipTLSVerify bool
}
// Clone clones original repository to target path.
func Clone(ctx context.Context, from, to string, opts CloneRepoOptions) error {
return CloneWithArgs(ctx, globalCommandArgs, from, to, opts)
}
// CloneWithArgs original repository to target path.
func CloneWithArgs(ctx context.Context, args TrustedCmdArgs, from, to string, opts CloneRepoOptions) (err error) {
toDir := path.Dir(to)
if err = os.MkdirAll(toDir, os.ModePerm); err != nil {
return err
}
cmd := NewCommandContextNoGlobals(ctx, args...).AddArguments("clone")
if opts.SkipTLSVerify {
cmd.AddArguments("-c", "http.sslVerify=false")
}
if opts.Mirror {
cmd.AddArguments("--mirror")
}
if opts.Bare {
cmd.AddArguments("--bare")
}
if opts.Quiet {
cmd.AddArguments("--quiet")
}
if opts.Shared {
cmd.AddArguments("-s")
}
if opts.NoCheckout {
cmd.AddArguments("--no-checkout")
}
if opts.Depth > 0 {
cmd.AddArguments("--depth").AddDynamicArguments(strconv.Itoa(opts.Depth))
}
if opts.Filter != "" {
cmd.AddArguments("--filter").AddDynamicArguments(opts.Filter)
}
if len(opts.Branch) > 0 {
cmd.AddArguments("-b").AddDynamicArguments(opts.Branch)
}
cmd.AddDashesAndList(from, to)
if strings.Contains(from, "://") && strings.Contains(from, "@") {
cmd.SetDescription(fmt.Sprintf("clone branch %s from %s to %s (shared: %t, mirror: %t, depth: %d)", opts.Branch, util.SanitizeCredentialURLs(from), to, opts.Shared, opts.Mirror, opts.Depth))
} else {
cmd.SetDescription(fmt.Sprintf("clone branch %s from %s to %s (shared: %t, mirror: %t, depth: %d)", opts.Branch, from, to, opts.Shared, opts.Mirror, opts.Depth))
}
if opts.Timeout <= 0 {
opts.Timeout = -1
}
envs := os.Environ()
u, err := url.Parse(from)
if err == nil {
envs = proxy.EnvWithProxy(u)
}
stderr := new(bytes.Buffer)
if err = cmd.Run(&RunOpts{
Timeout: opts.Timeout,
Env: envs,
Stdout: io.Discard,
Stderr: stderr,
}); err != nil {
return ConcatenateError(err, stderr.String())
}
return nil
}
// PushOptions options when push to remote
type PushOptions struct {
Remote string
Branch string
Force bool
Mirror bool
Env []string
Timeout time.Duration
}
// Push pushs local commits to given remote branch.
func Push(ctx context.Context, repoPath string, opts PushOptions) error {
cmd := NewCommand(ctx, "push")
if opts.Force {
cmd.AddArguments("-f")
}
if opts.Mirror {
cmd.AddArguments("--mirror")
}
remoteBranchArgs := []string{opts.Remote}
if len(opts.Branch) > 0 {
remoteBranchArgs = append(remoteBranchArgs, opts.Branch)
}
cmd.AddDashesAndList(remoteBranchArgs...)
if strings.Contains(opts.Remote, "://") && strings.Contains(opts.Remote, "@") {
cmd.SetDescription(fmt.Sprintf("push branch %s to %s (force: %t, mirror: %t)", opts.Branch, util.SanitizeCredentialURLs(opts.Remote), opts.Force, opts.Mirror))
} else {
cmd.SetDescription(fmt.Sprintf("push branch %s to %s (force: %t, mirror: %t)", opts.Branch, opts.Remote, opts.Force, opts.Mirror))
}
stdout, stderr, err := cmd.RunStdString(&RunOpts{Env: opts.Env, Timeout: opts.Timeout, Dir: repoPath})
if err != nil {
if strings.Contains(stderr, "non-fast-forward") {
return &ErrPushOutOfDate{StdOut: stdout, StdErr: stderr, Err: err}
} else if strings.Contains(stderr, "! [remote rejected]") {
err := &ErrPushRejected{StdOut: stdout, StdErr: stderr, Err: err}
err.GenerateMessage()
return err
} else if strings.Contains(stderr, "matches more than one") {
return &ErrMoreThanOne{StdOut: stdout, StdErr: stderr, Err: err}
}
return fmt.Errorf("push failed: %w - %s\n%s", err, stderr, stdout)
}
return nil
}
// GetLatestCommitTime returns time for latest commit in repository (across all branches)
func GetLatestCommitTime(ctx context.Context, repoPath string) (time.Time, error) {
cmd := NewCommand(ctx, "for-each-ref", "--sort=-committerdate", BranchPrefix, "--count", "1", "--format=%(committerdate)")
stdout, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
if err != nil {
return time.Time{}, err
}
commitTime := strings.TrimSpace(stdout)
return time.Parse(GitTimeLayout, commitTime)
}
// DivergeObject represents commit count diverging commits
type DivergeObject struct {
Ahead int
Behind int
}
// GetDivergingCommits returns the number of commits a targetBranch is ahead or behind a baseBranch
func GetDivergingCommits(ctx context.Context, repoPath, baseBranch, targetBranch string) (do DivergeObject, err error) {
cmd := NewCommand(ctx, "rev-list", "--count", "--left-right").
AddDynamicArguments(baseBranch + "..." + targetBranch)
stdout, _, err := cmd.RunStdString(&RunOpts{Dir: repoPath})
if err != nil {
return do, err
}
left, right, found := strings.Cut(strings.Trim(stdout, "\n"), "\t")
if !found {
return do, fmt.Errorf("git rev-list output is missing a tab: %q", stdout)
}
do.Behind, err = strconv.Atoi(left)
if err != nil {
return do, err
}
do.Ahead, err = strconv.Atoi(right)
if err != nil {
return do, err
}
return do, nil
}
// CreateBundle create bundle content to the target path
func (repo *Repository) CreateBundle(ctx context.Context, commit string, out io.Writer) error {
tmp, err := os.MkdirTemp(os.TempDir(), "gitea-bundle")
if err != nil {
return err
}
defer os.RemoveAll(tmp)
env := append(os.Environ(), "GIT_OBJECT_DIRECTORY="+filepath.Join(repo.Path, "objects"))
_, _, err = NewCommand(ctx, "init", "--bare").RunStdString(&RunOpts{Dir: tmp, Env: env})
if err != nil {
return err
}
_, _, err = NewCommand(ctx, "reset", "--soft").AddDynamicArguments(commit).RunStdString(&RunOpts{Dir: tmp, Env: env})
if err != nil {
return err
}
_, _, err = NewCommand(ctx, "branch", "-m", "bundle").RunStdString(&RunOpts{Dir: tmp, Env: env})
if err != nil {
return err
}
tmpFile := filepath.Join(tmp, "bundle")
_, _, err = NewCommand(ctx, "bundle", "create").AddDynamicArguments(tmpFile, "bundle", "HEAD").RunStdString(&RunOpts{Dir: tmp, Env: env})
if err != nil {
return err
}
fi, err := os.Open(tmpFile)
if err != nil {
return err
}
defer fi.Close()
_, err = io.Copy(out, fi)
return err
}