Function find_conflict_by_gitdir_cb

submodule.c:2311–2347

};

static int find_conflict_by_gitdir_cb(const char *var, const char *value,
				      const struct config_context *ctx UNUSED, void *data)
{
	struct submodule_from_gitdir_cb *cb = data;
	const char *submodule_name_start;
	size_t submodule_name_len;
	const char *suffix = ".gitdir";
	size_t suffix_len = strlen(suffix);

	if (!skip_prefix(var, "submodule.", &submodule_name_start))
		return 0;

	/* Check if submodule_name_start ends with ".gitdir" */
	submodule_name_len = strlen(submodule_name_start);
	if (submodule_name_len < suffix_len ||
	    strcmp(submodule_name_start + submodule_name_len - suffix_len, suffix) != 0)
		return 0; /* Does not end with ".gitdir" */

	submodule_name_len -= suffix_len;

	/*
	 * A conflict happens if:
	 * 1. The submodule names are different and
	 * 2. The gitdir paths resolve to the same absolute path
	 */
	if (value && strncmp(cb->submodule_name, submodule_name_start, submodule_name_len)) {
		char *abs_path_cb = absolute_pathdup(cb->gitdir);
		char *abs_path_value = absolute_pathdup(value);

		cb->conflict_found = !strcmp(abs_path_cb, abs_path_value);

		free(abs_path_cb);
		free(abs_path_value);
	}

	return cb->conflict_found;
}

static bool submodule_conflicts_with_existing(const char *gitdir, const char *submodule_name)
{