Function print_path

builtin/rev-parse.c:656–703

};

static void print_path(const char *path, const char *prefix, enum format_type format, enum default_type def)
{
	char *cwd = NULL;
	/*
	 * We don't ever produce a relative path if prefix is NULL, so set the
	 * prefix to the current directory so that we can produce a relative
	 * path whenever possible.  If we're using RELATIVE_IF_SHARED mode, then
	 * we want an absolute path unless the two share a common prefix, so don't
	 * set it in that case, since doing so causes a relative path to always
	 * be produced if possible.
	 */
	if (!prefix && (format != FORMAT_DEFAULT || def != DEFAULT_RELATIVE_IF_SHARED))
		prefix = cwd = xgetcwd();
	if (format == FORMAT_DEFAULT && def == DEFAULT_UNMODIFIED) {
		puts(path);
	} else if (format == FORMAT_RELATIVE ||
		  (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE)) {
		/*
		 * In order for relative_path to work as expected, we need to
		 * make sure that both paths are absolute paths.  If we don't,
		 * we can end up with an unexpected absolute path that the user
		 * didn't want.
		 */
		struct strbuf buf = STRBUF_INIT, realbuf = STRBUF_INIT, prefixbuf = STRBUF_INIT;
		if (!is_absolute_path(path)) {
			strbuf_realpath_forgiving(&realbuf, path,  1);
			path = realbuf.buf;
		}
		if (!is_absolute_path(prefix)) {
			strbuf_realpath_forgiving(&prefixbuf, prefix, 1);
			prefix = prefixbuf.buf;
		}
		puts(relative_path(path, prefix, &buf));
		strbuf_release(&buf);
		strbuf_release(&realbuf);
		strbuf_release(&prefixbuf);
	} else if (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE_IF_SHARED) {
		struct strbuf buf = STRBUF_INIT;
		puts(relative_path(path, prefix, &buf));
		strbuf_release(&buf);
	} else {
		struct strbuf buf = STRBUF_INIT;
		strbuf_realpath_forgiving(&buf, path, 1);
		puts(buf.buf);
		strbuf_release(&buf);
	}
	free(cwd);
}

int cmd_rev_parse(int argc,
		  const char **argv,