Function prepare_index

builtin/commit.c:351–561

}

static const char *prepare_index(const char **argv, const char *prefix,
				 const struct commit *current_head, int is_status)
{
	struct string_list partial = STRING_LIST_INIT_DUP;
	struct pathspec pathspec;
	int refresh_flags = REFRESH_QUIET;
	const char *ret;
	char *path = NULL;

	if (interactive_opts.context < -1)
		die(_("'%s' cannot be negative"), "--unified");
	if (interactive_opts.interhunkcontext < -1)
		die(_("'%s' cannot be negative"), "--inter-hunk-context");

	if (is_status)
		refresh_flags |= REFRESH_UNMERGED;
	parse_pathspec(&pathspec, 0,
		       PATHSPEC_PREFER_FULL,
		       prefix, argv);

	if (pathspec_from_file) {
		if (interactive)
			die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--interactive/--patch");

		if (all)
			die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "-a");

		if (pathspec.nr)
			die(_("'%s' and pathspec arguments cannot be used together"), "--pathspec-from-file");

		parse_pathspec_file(&pathspec, 0,
				    PATHSPEC_PREFER_FULL,
				    prefix, pathspec_from_file, pathspec_file_nul);
	} else if (pathspec_file_nul) {
		die(_("the option '%s' requires '%s'"), "--pathspec-file-nul", "--pathspec-from-file");
	}

	if (!pathspec.nr && (also || (only && !allow_empty &&
	    (!amend || (fixup_message && strcmp(fixup_prefix, "amend"))))))
		die(_("No paths with --include/--only does not make sense."));

	if (repo_read_index_preload(the_repository, &pathspec, 0) < 0)
		die(_("index file corrupt"));

	if (interactive) {
		char *old_index_env = NULL, *old_repo_index_file;
		repo_hold_locked_index(the_repository, &index_lock,
				       LOCK_DIE_ON_ERROR);

		refresh_cache_or_die(refresh_flags);

		if (write_locked_index(the_repository->index, &index_lock, 0))
			die(_("unable to create temporary index"));

		old_repo_index_file = the_repository->index_file;
		the_repository->index_file =
			(char *)get_lock_file_path(&index_lock);
		old_index_env = xstrdup_or_null(getenv(INDEX_ENVIRONMENT));