Files
gitea-tea/internal/git/discover.go
T
bircni 88b91faa54 refactor: add credential and Git packages (#1123)
- `internal/auth`: credentials in the OS keyring or a private file, OAuth login with token refresh, SSH HTTP-signature signers (key files with passphrase prompt, ssh-agent keys and certificates), and the Git credential helper protocol.
- `internal/git`: cancellable Git subprocesses, repository and remote discovery (tracked remote via `branch.<name>.remote`), PR checkout by full ref, AGit push, branch cleanup.

Nothing imports these packages yet.

Reviewed-on: https://gitea.com/gitea/tea/pulls/1123
Reviewed-by: TheFox0x7 <95654+thefox0x7@noreply.gitea.com>
2026-10-11 17:09:37 +00:00

64 lines
2.0 KiB
Go

// Copyright 2026 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"context"
"errors"
"slices"
"strings"
)
// ErrAmbiguousRemote reports that repository discovery cannot choose between several remotes.
var ErrAmbiguousRemote = errors.New("ambiguous repository: select --remote or --repo")
// DiscoverRemote names the remote used for repository discovery: preferred when set, otherwise
// the current branch's upstream remote, then upstream, origin, or the only remote.
func DiscoverRemote(ctx context.Context, runner Runner, dir, preferred string) (string, error) {
if preferred != "" {
return preferred, nil
}
if _, remote := CurrentUpstreamRemote(ctx, runner, dir); remote != "" {
return remote, nil
}
names, err := runner.Output(ctx, dir, false, "remote")
if err != nil {
return "", err
}
available := strings.Fields(names)
for _, name := range []string{"upstream", "origin"} {
if slices.Contains(available, name) {
return name, nil
}
}
if len(available) == 1 {
return available[0], nil
}
return "", ErrAmbiguousRemote
}
// CurrentUpstreamRemote names the checked-out branch and the remote it tracks; each is "" when
// HEAD is detached or the branch tracks no remote.
func CurrentUpstreamRemote(ctx context.Context, runner Runner, dir string) (branch, remote string) {
branch, err := runner.Output(ctx, dir, false, "symbolic-ref", "--short", "HEAD")
if err != nil {
return "", ""
}
return branch, UpstreamRemote(ctx, runner, dir, branch)
}
// UpstreamRemote names the remote branch tracks, or "" when it tracks none or a local branch.
// Unlike splitting @{upstream}, it keeps remote names with slashes, such as the
// pulls/<owner>/<repo> remotes pr checkout adds.
func UpstreamRemote(ctx context.Context, runner Runner, dir, branch string) string {
if branch == "" {
return ""
}
remote, err := runner.Output(ctx, dir, false, "config", "--get", "branch."+branch+".remote")
if err != nil || remote == "." {
return ""
}
return remote
}