Function cmd_diff_pairs

builtin/diff-pairs.c:30–207

}

int cmd_diff_pairs(int argc, const char **argv, const char *prefix,
		   struct repository *repo)
{
	struct strbuf path_dst = STRBUF_INIT;
	struct strbuf path = STRBUF_INIT;
	struct strbuf meta = STRBUF_INIT;
	struct option *parseopts;
	struct rev_info revs;
	int line_term = '\0';
	int ret;

	const char * const builtin_diff_pairs_usage[] = {
		N_("git diff-pairs -z [<diff-options>]"),
		NULL
	};
	struct option builtin_diff_pairs_options[] = {
		OPT_END()
	};

	repo_init_revisions(repo, &revs, prefix);

	/*
	 * Diff options are usually parsed implicitly as part of
	 * setup_revisions(). Explicitly handle parsing to ensure options are
	 * printed in the usage message.
	 */
	parseopts = add_diff_options(builtin_diff_pairs_options, &revs.diffopt);
	show_usage_with_options_if_asked(argc, argv, builtin_diff_pairs_usage, parseopts);

	repo_config(repo, git_diff_basic_config, NULL);
	revs.diffopt.no_free = 1;
	revs.disable_stdin = 1;
	revs.abbrev = 0;
	revs.diff = 1;

	argc = parse_options(argc, argv, prefix, parseopts, builtin_diff_pairs_usage,
			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_DASHDASH);

	if (setup_revisions(argc, argv, &revs, NULL) > 1)
		usagef(_("unrecognized argument: %s"), argv[0]);

	/*
	 * With the -z option, both command input and raw output are
	 * NUL-delimited (this mode does not affect patch output). At present
	 * only NUL-delimited raw diff formatted input is supported.
	 */
	if (revs.diffopt.line_termination)
		usage(_("working without -z is not supported"));

	if (revs.prune_data.nr)
		usage(_("pathspec arguments not supported"));

	if (revs.pending.nr || revs.max_count != -1 ||
	    revs.min_age != (timestamp_t)-1 ||
	    revs.max_age != (timestamp_t)-1)
		usage(_("revision arguments not allowed"));

	if (!revs.diffopt.output_format)