Function cmd_diff_tree

builtin/diff-tree.c:112–238

}

int cmd_diff_tree(int argc,
		  const char **argv,
		  const char *prefix,
		  struct repository *repo UNUSED)
{
	char line[1000];
	struct object *tree1, *tree2;
	static struct rev_info *opt = &log_tree_opt;
	struct setup_revision_opt s_r_opt;
	struct userformat_want w;
	int read_stdin = 0;
	int merge_base = 0;

	show_usage_if_asked(argc, argv, diff_tree_usage);

	repo_config(the_repository, git_diff_basic_config, NULL); /* no "diff" UI options */

	prepare_repo_settings(the_repository);
	the_repository->settings.command_requires_full_index = 0;

	repo_init_revisions(the_repository, opt, prefix);
	if (repo_read_index(the_repository) < 0)
		die(_("index file corrupt"));
	opt->abbrev = 0;
	opt->diff = 1;
	opt->disable_stdin = 1;
	memset(&s_r_opt, 0, sizeof(s_r_opt));
	s_r_opt.tweak = diff_tree_tweak_rev;

	prefix = precompose_argv_prefix(argc, argv, prefix);
	argc = setup_revisions(argc, argv, opt, &s_r_opt);

	memset(&w, 0, sizeof(w));
	userformat_find_requirements(NULL, &w);

	if (!opt->show_notes_given && w.notes)
		opt->show_notes = 1;
	if (opt->show_notes)
		load_display_notes(&opt->notes_opt);

	while (--argc > 0) {
		const char *arg = *++argv;

		if (!strcmp(arg, "--stdin")) {
			read_stdin = 1;
			continue;
		}
		if (!strcmp(arg, "--merge-base")) {
			merge_base = 1;
			continue;
		}
		usage(diff_tree_usage);
	}

	if (read_stdin && merge_base)
		die(_("options '%s' and '%s' cannot be used together"), "--stdin", "--merge-base");
	if (merge_base && opt->pending.nr != 2)
		die(_("--merge-base only works with two commits"));