You've already forked agentic-coding-workflow
65 lines
1.8 KiB
Go
65 lines
1.8 KiB
Go
package git
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import (
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"bufio"
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"bytes"
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"context"
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"strings"
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)
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// FetchRemoteBranch fetches a single remote branch (origin/<branch>).
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// Lighter than Fetch --all when we only need one branch.
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func (r *DefaultRunner) FetchRemoteBranch(ctx context.Context, dir, branch string, cred *Credential) error {
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ctx, cancel := withCtx(ctx, r.cfg.FetchTimeout)
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defer cancel()
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env, cleanup, err := credentialEnv(r.cfg.TmpDir, cred)
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if err != nil {
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return err
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}
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defer cleanup()
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_, _, err = r.exec(ctx, dir, env, "fetch", "origin", branch)
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return err
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}
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// Checkout switches the working tree to the given branch.
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func (r *DefaultRunner) Checkout(ctx context.Context, dir, branch string) error {
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ctx, cancel := withCtx(ctx, r.cfg.OpsTimeout)
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defer cancel()
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_, _, err := r.exec(ctx, dir, nil, "checkout", branch)
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return err
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}
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// ListRemoteBranches queries the remote for all branch names via git ls-remote.
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// Returns branch names with refs/heads/ prefix stripped.
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func (r *DefaultRunner) ListRemoteBranches(ctx context.Context, dir string, cred *Credential) ([]string, error) {
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ctx, cancel := withCtx(ctx, r.cfg.FetchTimeout)
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defer cancel()
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env, cleanup, err := credentialEnv(r.cfg.TmpDir, cred)
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if err != nil {
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return nil, err
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}
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defer cleanup()
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out, _, err := r.exec(ctx, dir, env, "ls-remote", "--heads")
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if err != nil {
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return nil, err
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}
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return parseRemoteBranches(out), nil
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}
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// parseRemoteBranches parses git ls-remote --heads output.
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// Each line: "<sha>\trefs/heads/<branch>"
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func parseRemoteBranches(buf []byte) []string {
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var branches []string
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sc := bufio.NewScanner(bytes.NewReader(buf))
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for sc.Scan() {
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line := strings.TrimSpace(sc.Text())
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if idx := strings.Index(line, "\trefs/heads/"); idx >= 0 {
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name := line[idx+len("\trefs/heads/"):]
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if name != "" {
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branches = append(branches, name)
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}
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}
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}
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return branches
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}
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