gitea/modules/git/repo.go

321 lines
8.2 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2017 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"
"context"
"fmt"
"io"
"net/url"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"time"
"code.gitea.io/gitea/modules/proxy"
)
// 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 := NewCommandContext(ctx, "ls-remote", "-q", "-h", url, "HEAD").Run()
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 := NewCommandContext(ctx, "init")
if bare {
cmd.AddArguments("--bare")
}
_, err = cmd.RunInDir(repoPath)
return err
}
// IsEmpty Check if repository is empty.
func (repo *Repository) IsEmpty() (bool, error) {
var errbuf strings.Builder
if err := NewCommandContext(repo.Ctx, "log", "-1").RunInDirPipeline(repo.Path, nil, &errbuf); err != nil {
if strings.Contains(errbuf.String(), "fatal: bad default revision 'HEAD'") ||
strings.Contains(errbuf.String(), "fatal: your current branch 'master' does not have any commits yet") {
return true, nil
}
return true, fmt.Errorf("check empty: %v - %s", err, errbuf.String())
}
return false, 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
}
// Clone clones original repository to target path.
func Clone(ctx context.Context, from, to string, opts CloneRepoOptions) error {
cargs := make([]string, len(GlobalCommandArgs))
copy(cargs, GlobalCommandArgs)
return CloneWithArgs(ctx, from, to, cargs, opts)
}
// CloneWithArgs original repository to target path.
func CloneWithArgs(ctx context.Context, from, to string, args []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.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", strconv.Itoa(opts.Depth))
}
if opts.Filter != "" {
cmd.AddArguments("--filter", opts.Filter)
}
if len(opts.Branch) > 0 {
cmd.AddArguments("-b", opts.Branch)
}
cmd.AddArguments("--", from, to)
if opts.Timeout <= 0 {
opts.Timeout = -1
}
envs := os.Environ()
u, err := url.Parse(from)
if err == nil && (strings.EqualFold(u.Scheme, "http") || strings.EqualFold(u.Scheme, "https")) {
if proxy.Match(u.Host) {
envs = append(envs, fmt.Sprintf("https_proxy=%s", proxy.GetProxyURL()))
}
}
stderr := new(bytes.Buffer)
if err = cmd.RunWithContext(&RunContext{
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 := NewCommandContext(ctx, "push")
if opts.Force {
cmd.AddArguments("-f")
}
if opts.Mirror {
cmd.AddArguments("--mirror")
}
cmd.AddArguments("--", opts.Remote)
if len(opts.Branch) > 0 {
cmd.AddArguments(opts.Branch)
}
var outbuf, errbuf strings.Builder
if opts.Timeout == 0 {
opts.Timeout = -1
}
err := cmd.RunInDirTimeoutEnvPipeline(opts.Env, opts.Timeout, repoPath, &outbuf, &errbuf)
if err != nil {
if strings.Contains(errbuf.String(), "non-fast-forward") {
return &ErrPushOutOfDate{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
} else if strings.Contains(errbuf.String(), "! [remote rejected]") {
err := &ErrPushRejected{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
err.GenerateMessage()
return err
} else if strings.Contains(errbuf.String(), "matches more than one") {
err := &ErrMoreThanOne{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
return err
}
}
if errbuf.Len() > 0 && err != nil {
return fmt.Errorf("%v - %s", err, errbuf.String())
}
return err
}
// GetLatestCommitTime returns time for latest commit in repository (across all branches)
func GetLatestCommitTime(ctx context.Context, repoPath string) (time.Time, error) {
cmd := NewCommandContext(ctx, "for-each-ref", "--sort=-committerdate", BranchPrefix, "--count", "1", "--format=%(committerdate)")
stdout, err := cmd.RunInDir(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
}
func checkDivergence(ctx context.Context, repoPath, baseBranch, targetBranch string) (int, error) {
branches := fmt.Sprintf("%s..%s", baseBranch, targetBranch)
cmd := NewCommandContext(ctx, "rev-list", "--count", branches)
stdout, err := cmd.RunInDir(repoPath)
if err != nil {
return -1, err
}
outInteger, errInteger := strconv.Atoi(strings.Trim(stdout, "\n"))
if errInteger != nil {
return -1, errInteger
}
return outInteger, nil
}
// GetDivergingCommits returns the number of commits a targetBranch is ahead or behind a baseBranch
func GetDivergingCommits(ctx context.Context, repoPath, baseBranch, targetBranch string) (DivergeObject, error) {
// $(git rev-list --count master..feature) commits ahead of master
ahead, errorAhead := checkDivergence(ctx, repoPath, baseBranch, targetBranch)
if errorAhead != nil {
return DivergeObject{}, errorAhead
}
// $(git rev-list --count feature..master) commits behind master
behind, errorBehind := checkDivergence(ctx, repoPath, targetBranch, baseBranch)
if errorBehind != nil {
return DivergeObject{}, errorBehind
}
return DivergeObject{ahead, behind}, 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 = NewCommandContext(ctx, "init", "--bare").RunInDirWithEnv(tmp, env)
if err != nil {
return err
}
_, err = NewCommandContext(ctx, "reset", "--soft", commit).RunInDirWithEnv(tmp, env)
if err != nil {
return err
}
_, err = NewCommandContext(ctx, "branch", "-m", "bundle").RunInDirWithEnv(tmp, env)
if err != nil {
return err
}
tmpFile := filepath.Join(tmp, "bundle")
_, err = NewCommandContext(ctx, "bundle", "create", tmpFile, "bundle", "HEAD").RunInDirWithEnv(tmp, 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
}