Function remote_default_branch

scalar.c:341–390

}

static char *remote_default_branch(const char *url)
{
	struct child_process cp = CHILD_PROCESS_INIT;
	struct strbuf out = STRBUF_INIT;

	cp.git_cmd = 1;
	strvec_pushl(&cp.args, "ls-remote", "--symref", url, "HEAD", NULL);
	if (!pipe_command(&cp, NULL, 0, &out, 0, NULL, 0)) {
		const char *line = out.buf;

		while (*line) {
			const char *eol = strchrnul(line, '\n'), *p;
			size_t len = eol - line;
			char *branch;

			if (!skip_prefix(line, "ref: ", &p) ||
			    !strip_suffix_mem(line, &len, "\tHEAD")) {
				line = eol + (*eol == '\n');
				continue;
			}

			eol = line + len;
			if (skip_prefix(p, "refs/heads/", &p)) {
				branch = xstrndup(p, eol - p);
				strbuf_release(&out);
				return branch;
			}

			error(_("remote HEAD is not a branch: '%.*s'"),
			      (int)(eol - p), p);
			strbuf_release(&out);
			return NULL;
		}
	}
	warning(_("failed to get default branch name from remote; "
		  "using local default"));
	strbuf_reset(&out);

	child_process_init(&cp);
	cp.git_cmd = 1;
	strvec_pushl(&cp.args, "symbolic-ref", "--short", "HEAD", NULL);
	if (!pipe_command(&cp, NULL, 0, &out, 0, NULL, 0)) {
		strbuf_trim(&out);
		return strbuf_detach(&out, NULL);
	}

	strbuf_release(&out);
	error(_("failed to get default branch name"));
	return NULL;
}

static int delete_enlistment(struct strbuf *enlistment)
{