Function parseDefaultBranchFromLsRemote

pkg/cli/add_interactive_git.go:343–358

parseDefaultBranchFromLsRemote extracts the default branch name from the output of `git ls-remote --symref origin HEAD`. Example output: ref: refs/heads/main abc123 abc123 HEAD Returns "" if the branch cannot be determined.

(output string)

//
// Returns "" if the branch cannot be determined.
func parseDefaultBranchFromLsRemote(output string) string {
	for line := range strings.SplitSeq(output, "\n") {
		if !strings.HasPrefix(line, "ref: refs/heads/") {
			continue
		}
		// line is e.g. "ref: refs/heads/main\tabc123"
		// Split on tab first to isolate the symref part from the hash.
		tabParts := strings.SplitN(line, "\t", 2)
		ref := strings.TrimPrefix(tabParts[0], "ref: refs/heads/")
		ref = strings.TrimSpace(ref)
		if ref != "" {
			return ref
		}
	}
	return ""
}