Example #1
0
static int check_changes_tracked_files(struct pathspec ps)
{
	int result;
	struct rev_info rev;
	struct object_id dummy;

	/* No initial commit. */
	if (get_oid("HEAD", &dummy))
		return -1;

	if (read_cache() < 0)
		return -1;

	init_revisions(&rev, NULL);
	rev.prune_data = ps;

	rev.diffopt.flags.quick = 1;
	rev.diffopt.flags.ignore_submodules = 1;
	rev.abbrev = 0;

	add_head_to_pending(&rev);
	diff_setup_done(&rev.diffopt);

	result = run_diff_index(&rev, 1);
	if (diff_result_code(&rev.diffopt, result))
		return 1;

	object_array_clear(&rev.pending);
	result = run_diff_files(&rev, 0);
	if (diff_result_code(&rev.diffopt, result))
		return 1;

	return 0;
}
Example #2
0
int cmd_shortlog(int argc, const char **argv, const char *prefix)
{
	static struct shortlog log;
	static struct rev_info rev;
	int nongit = !startup_info->have_repository;

	static const struct option options[] = {
		OPT_BOOL('n', "numbered", &log.sort_by_number,
			 N_("sort output according to the number of commits per author")),
		OPT_BOOL('s', "summary", &log.summary,
			 N_("Suppress commit descriptions, only provides commit count")),
		OPT_BOOL('e', "email", &log.email,
			 N_("Show the email address of each author")),
		{ OPTION_CALLBACK, 'w', NULL, &log, N_("w[,i1[,i2]]"),
			N_("Linewrap output"), PARSE_OPT_OPTARG, &parse_wrap_args },
		OPT_END(),
	};

	struct parse_opt_ctx_t ctx;

	git_config(git_default_config, NULL);
	shortlog_init(&log);
	init_revisions(&rev, prefix);
	parse_options_start(&ctx, argc, argv, prefix, options,
			    PARSE_OPT_KEEP_DASHDASH | PARSE_OPT_KEEP_ARGV0);

	for (;;) {
		switch (parse_options_step(&ctx, options, shortlog_usage)) {
		case PARSE_OPT_HELP:
			exit(129);
		case PARSE_OPT_DONE:
			goto parse_done;
		}
		parse_revision_opt(&rev, &ctx, options, shortlog_usage);
	}
parse_done:
	argc = parse_options_end(&ctx);

	if (setup_revisions(argc, argv, &rev, NULL) != 1) {
		error(_("unrecognized argument: %s"), argv[1]);
		usage_with_options(shortlog_usage, options);
	}

	log.user_format = rev.commit_format == CMIT_FMT_USERFORMAT;
	log.abbrev = rev.abbrev;

	/* assume HEAD if from a tty */
	if (!nongit && !rev.pending.nr && isatty(0))
		add_head_to_pending(&rev);
	if (rev.pending.nr == 0) {
		if (isatty(0))
			fprintf(stderr, _("(reading log message from standard input)\n"));
		read_from_stdin(&log);
	}
	else
		get_from_rev(&rev, &log);

	shortlog_output(&log);
	return 0;
}
Example #3
0
File: pull.c Project: 136357477/git
/**
 * Returns 1 if there are uncommitted changes, 0 otherwise.
 */
static int has_uncommitted_changes(const char *prefix)
{
	struct rev_info rev_info;
	int result;

	if (is_cache_unborn())
		return 0;

	init_revisions(&rev_info, prefix);
	DIFF_OPT_SET(&rev_info.diffopt, IGNORE_SUBMODULES);
	DIFF_OPT_SET(&rev_info.diffopt, QUICK);
	add_head_to_pending(&rev_info);
	diff_setup_done(&rev_info.diffopt);
	result = run_diff_index(&rev_info, 1);
	return diff_result_code(&rev_info.diffopt, result);
}
Example #4
0
int cmd_format_patch(int argc, const char **argv, const char *prefix)
{
	struct commit *commit;
	struct commit **list = NULL;
	struct rev_info rev;
	int nr = 0, total, i;
	int use_stdout = 0;
	int start_number = -1;
	int numbered_files = 0;		/* _just_ numbers */
	int ignore_if_in_upstream = 0;
	int cover_letter = 0;
	int boundary_count = 0;
	int no_binary_diff = 0;
	struct commit *origin = NULL, *head = NULL;
	const char *in_reply_to = NULL;
	struct patch_ids ids;
	char *add_signoff = NULL;
	struct strbuf buf = STRBUF_INIT;
	int use_patch_format = 0;
	const struct option builtin_format_patch_options[] = {
		{ OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
			    "use [PATCH n/m] even with a single patch",
			    PARSE_OPT_NOARG, numbered_callback },
		{ OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL,
			    "use [PATCH] even with multiple patches",
			    PARSE_OPT_NOARG, no_numbered_callback },
		OPT_BOOLEAN('s', "signoff", &do_signoff, "add Signed-off-by:"),
		OPT_BOOLEAN(0, "stdout", &use_stdout,
			    "print patches to standard out"),
		OPT_BOOLEAN(0, "cover-letter", &cover_letter,
			    "generate a cover letter"),
		OPT_BOOLEAN(0, "numbered-files", &numbered_files,
			    "use simple number sequence for output file names"),
		OPT_STRING(0, "suffix", &fmt_patch_suffix, "sfx",
			    "use <sfx> instead of '.patch'"),
		OPT_INTEGER(0, "start-number", &start_number,
			    "start numbering patches at <n> instead of 1"),
		{ OPTION_CALLBACK, 0, "subject-prefix", &rev, "prefix",
			    "Use [<prefix>] instead of [PATCH]",
			    PARSE_OPT_NONEG, subject_prefix_callback },
		{ OPTION_CALLBACK, 'o', "output-directory", &output_directory,
			    "dir", "store resulting files in <dir>",
			    PARSE_OPT_NONEG, output_directory_callback },
		{ OPTION_CALLBACK, 'k', "keep-subject", &rev, NULL,
			    "don't strip/add [PATCH]",
			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback },
		OPT_BOOLEAN(0, "no-binary", &no_binary_diff,
			    "don't output binary diffs"),
		OPT_BOOLEAN(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
			    "don't include a patch matching a commit upstream"),
		{ OPTION_BOOLEAN, 'p', "no-stat", &use_patch_format, NULL,
		  "show patch format instead of default (patch + stat)",
		  PARSE_OPT_NONEG | PARSE_OPT_NOARG },
		OPT_GROUP("Messaging"),
		{ OPTION_CALLBACK, 0, "add-header", NULL, "header",
			    "add email header", PARSE_OPT_NONEG,
			    header_callback },
		{ OPTION_CALLBACK, 0, "cc", NULL, "email", "add Cc: header",
			    PARSE_OPT_NONEG, cc_callback },
		OPT_STRING(0, "in-reply-to", &in_reply_to, "message-id",
			    "make first mail a reply to <message-id>"),
		{ OPTION_CALLBACK, 0, "attach", &rev, "boundary",
			    "attach the patch", PARSE_OPT_OPTARG,
			    attach_callback },
		{ OPTION_CALLBACK, 0, "inline", &rev, "boundary",
			    "inline the patch",
			    PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
			    inline_callback },
		{ OPTION_CALLBACK, 0, "thread", &thread, "style",
			    "enable message threading, styles: shallow, deep",
			    PARSE_OPT_OPTARG, thread_callback },
		OPT_END()
	};

	git_config(git_format_config, NULL);
	init_revisions(&rev, prefix);
	rev.commit_format = CMIT_FMT_EMAIL;
	rev.verbose_header = 1;
	rev.diff = 1;
	rev.combine_merges = 0;
	rev.ignore_merges = 1;
	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);

	rev.subject_prefix = fmt_patch_subject_prefix;

	if (default_attach) {
		rev.mime_boundary = default_attach;
		rev.no_inline = 1;
	}

	/*
	 * Parse the arguments before setup_revisions(), or something
	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
	 * possibly a valid SHA1.
	 */
	argc = parse_options(argc, argv, prefix, builtin_format_patch_options,
			     builtin_format_patch_usage,
			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
			     PARSE_OPT_KEEP_DASHDASH);

	if (do_signoff) {
		const char *committer;
		const char *endpos;
		committer = git_committer_info(IDENT_ERROR_ON_NO_NAME);
		endpos = strchr(committer, '>');
		if (!endpos)
			die("bogus committer info %s", committer);
		add_signoff = xmemdupz(committer, endpos - committer + 1);
	}

	for (i = 0; i < extra_hdr_nr; i++) {
		strbuf_addstr(&buf, extra_hdr[i]);
		strbuf_addch(&buf, '\n');
	}

	if (extra_to_nr)
		strbuf_addstr(&buf, "To: ");
	for (i = 0; i < extra_to_nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_to[i]);
		if (i + 1 < extra_to_nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	if (extra_cc_nr)
		strbuf_addstr(&buf, "Cc: ");
	for (i = 0; i < extra_cc_nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_cc[i]);
		if (i + 1 < extra_cc_nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	rev.extra_headers = strbuf_detach(&buf, NULL);

	if (start_number < 0)
		start_number = 1;

	/*
	 * If numbered is set solely due to format.numbered in config,
	 * and it would conflict with --keep-subject (-k) from the
	 * command line, reset "numbered".
	 */
	if (numbered && keep_subject && !numbered_cmdline_opt)
		numbered = 0;

	if (numbered && keep_subject)
		die ("-n and -k are mutually exclusive.");
	if (keep_subject && subject_prefix)
		die ("--subject-prefix and -k are mutually exclusive.");

	argc = setup_revisions(argc, argv, &rev, "HEAD");
	if (argc > 1)
		die ("unrecognized argument: %s", argv[1]);

	if (rev.diffopt.output_format & DIFF_FORMAT_NAME)
		die("--name-only does not make sense");
	if (rev.diffopt.output_format & DIFF_FORMAT_NAME_STATUS)
		die("--name-status does not make sense");
	if (rev.diffopt.output_format & DIFF_FORMAT_CHECKDIFF)
		die("--check does not make sense");

	if (!use_patch_format &&
		(!rev.diffopt.output_format ||
		 rev.diffopt.output_format == DIFF_FORMAT_PATCH))
		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY;

	/* Always generate a patch */
	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;

	if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
		DIFF_OPT_SET(&rev.diffopt, BINARY);

	if (!use_stdout)
		output_directory = set_outdir(prefix, output_directory);

	if (output_directory) {
		if (use_stdout)
			die("standard output, or directory, which one?");
		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
			die_errno("Could not create directory '%s'",
				  output_directory);
	}

	if (rev.pending.nr == 1) {
		if (rev.max_count < 0 && !rev.show_root_diff) {
			/*
			 * This is traditional behaviour of "git format-patch
			 * origin" that prepares what the origin side still
			 * does not have.
			 */
			rev.pending.objects[0].item->flags |= UNINTERESTING;
			add_head_to_pending(&rev);
		}
		/*
		 * Otherwise, it is "format-patch -22 HEAD", and/or
		 * "format-patch --root HEAD".  The user wants
		 * get_revision() to do the usual traversal.
		 */
	}

	/*
	 * We cannot move this anywhere earlier because we do want to
	 * know if --root was given explicitly from the comand line.
	 */
	rev.show_root_diff = 1;

	if (cover_letter) {
		/* remember the range */
		int i;
		for (i = 0; i < rev.pending.nr; i++) {
			struct object *o = rev.pending.objects[i].item;
			if (!(o->flags & UNINTERESTING))
				head = (struct commit *)o;
		}
		/* We can't generate a cover letter without any patches */
		if (!head)
			return 0;
	}

	if (ignore_if_in_upstream)
		get_patch_ids(&rev, &ids, prefix);

	if (!use_stdout)
		realstdout = xfdopen(xdup(1), "w");

	if (prepare_revision_walk(&rev))
		die("revision walk setup failed");
	rev.boundary = 1;
	while ((commit = get_revision(&rev)) != NULL) {
		if (commit->object.flags & BOUNDARY) {
			boundary_count++;
			origin = (boundary_count == 1) ? commit : NULL;
			continue;
		}

		/* ignore merges */
		if (commit->parents && commit->parents->next)
			continue;

		if (ignore_if_in_upstream &&
				has_commit_patch_id(commit, &ids))
			continue;

		nr++;
		list = xrealloc(list, nr * sizeof(list[0]));
		list[nr - 1] = commit;
	}
	total = nr;
	if (!keep_subject && auto_number && total > 1)
		numbered = 1;
	if (numbered)
		rev.total = total + start_number - 1;
	if (in_reply_to || thread || cover_letter)
		rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
	if (in_reply_to) {
		const char *msgid = clean_message_id(in_reply_to);
		string_list_append(msgid, rev.ref_message_ids);
	}
	rev.numbered_files = numbered_files;
	rev.patch_suffix = fmt_patch_suffix;
	if (cover_letter) {
		if (thread)
			gen_message_id(&rev, "cover");
		make_cover_letter(&rev, use_stdout, numbered, numbered_files,
				  origin, nr, list, head);
		total++;
		start_number--;
	}
	rev.add_signoff = add_signoff;
	while (0 <= --nr) {
		int shown;
		commit = list[nr];
		rev.nr = total - nr + (start_number - 1);
		/* Make the second and subsequent mails replies to the first */
		if (thread) {
			/* Have we already had a message ID? */
			if (rev.message_id) {
				/*
				 * For deep threading: make every mail
				 * a reply to the previous one, no
				 * matter what other options are set.
				 *
				 * For shallow threading:
				 *
				 * Without --cover-letter and
				 * --in-reply-to, make every mail a
				 * reply to the one before.
				 *
				 * With --in-reply-to but no
				 * --cover-letter, make every mail a
				 * reply to the <reply-to>.
				 *
				 * With --cover-letter, make every
				 * mail but the cover letter a reply
				 * to the cover letter.  The cover
				 * letter is a reply to the
				 * --in-reply-to, if specified.
				 */
				if (thread == THREAD_SHALLOW
				    && rev.ref_message_ids->nr > 0
				    && (!cover_letter || rev.nr > 1))
					free(rev.message_id);
				else
					string_list_append(rev.message_id,
							   rev.ref_message_ids);
			}
			gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
		}

		if (!use_stdout && reopen_stdout(numbered_files ? NULL : commit,
						 &rev))
			die("Failed to create output files");
		shown = log_tree_commit(&rev, commit);
		free(commit->buffer);
		commit->buffer = NULL;

		/* We put one extra blank line between formatted
		 * patches and this flag is used by log-tree code
		 * to see if it needs to emit a LF before showing
		 * the log; when using one file per patch, we do
		 * not want the extra blank line.
		 */
		if (!use_stdout)
			rev.shown_one = 0;
		if (shown) {
			if (rev.mime_boundary)
				printf("\n--%s%s--\n\n\n",
				       mime_boundary_leader,
				       rev.mime_boundary);
			else
				printf("-- \n%s\n\n", git_version_string);
		}
		if (!use_stdout)
			fclose(stdout);
	}
	free(list);
	if (ignore_if_in_upstream)
		free_patch_ids(&ids);
	return 0;
}
Example #5
0
File: diff.c Project: tnachen/git
int cmd_diff(int argc, const char **argv, const char *prefix)
{
	int i;
	struct rev_info rev;
	struct object_array_entry ent[100];
	int ents = 0, blobs = 0, paths = 0;
	const char *path = NULL;
	struct blobinfo blob[2];
	int nongit;
	int result = 0;

	/*
	 * We could get N tree-ish in the rev.pending_objects list.
	 * Also there could be M blobs there, and P pathspecs.
	 *
	 * N=0, M=0:
	 *	cache vs files (diff-files)
	 * N=0, M=2:
	 *      compare two random blobs.  P must be zero.
	 * N=0, M=1, P=1:
	 *	compare a blob with a working tree file.
	 *
	 * N=1, M=0:
	 *      tree vs cache (diff-index --cached)
	 *
	 * N=2, M=0:
	 *      tree vs tree (diff-tree)
	 *
	 * N=0, M=0, P=2:
	 *      compare two filesystem entities (aka --no-index).
	 *
	 * Other cases are errors.
	 */

	prefix = setup_git_directory_gently(&nongit);
	gitmodules_config();
	git_config(git_diff_ui_config, NULL);

	if (diff_use_color_default == -1)
		diff_use_color_default = git_use_color_default;

	init_revisions(&rev, prefix);

	/* If this is a no-index diff, just run it and exit there. */
	diff_no_index(&rev, argc, argv, nongit, prefix);

	/* Otherwise, we are doing the usual "git" diff */
	rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;

	/* Default to let external and textconv be used */
	DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
	DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);

	if (nongit)
		die("Not a git repository");
	argc = setup_revisions(argc, argv, &rev, NULL);
	if (!rev.diffopt.output_format) {
		rev.diffopt.output_format = DIFF_FORMAT_PATCH;
		if (diff_setup_done(&rev.diffopt) < 0)
			die("diff_setup_done failed");
	}

	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);

	/*
	 * If the user asked for our exit code then don't start a
	 * pager or we would end up reporting its exit code instead.
	 */
	if (!DIFF_OPT_TST(&rev.diffopt, EXIT_WITH_STATUS) &&
	    check_pager_config("diff") != 0)
		setup_pager();

	/*
	 * Do we have --cached and not have a pending object, then
	 * default to HEAD by hand.  Eek.
	 */
	if (!rev.pending.nr) {
		int i;
		for (i = 1; i < argc; i++) {
			const char *arg = argv[i];
			if (!strcmp(arg, "--"))
				break;
			else if (!strcmp(arg, "--cached") ||
				 !strcmp(arg, "--staged")) {
				add_head_to_pending(&rev);
				if (!rev.pending.nr) {
					struct tree *tree;
					tree = lookup_tree((const unsigned char*)EMPTY_TREE_SHA1_BIN);
					add_pending_object(&rev, &tree->object, "HEAD");
				}
				break;
			}
		}
	}

	for (i = 0; i < rev.pending.nr; i++) {
		struct object_array_entry *list = rev.pending.objects+i;
		struct object *obj = list->item;
		const char *name = list->name;
		int flags = (obj->flags & UNINTERESTING);
		if (!obj->parsed)
			obj = parse_object(obj->sha1);
		obj = deref_tag(obj, NULL, 0);
		if (!obj)
			die("invalid object '%s' given.", name);
		if (obj->type == OBJ_COMMIT)
			obj = &((struct commit *)obj)->tree->object;
		if (obj->type == OBJ_TREE) {
			if (ARRAY_SIZE(ent) <= ents)
				die("more than %d trees given: '%s'",
				    (int) ARRAY_SIZE(ent), name);
			obj->flags |= flags;
			ent[ents].item = obj;
			ent[ents].name = name;
			ents++;
			continue;
		}
		if (obj->type == OBJ_BLOB) {
			if (2 <= blobs)
				die("more than two blobs given: '%s'", name);
			hashcpy(blob[blobs].sha1, obj->sha1);
			blob[blobs].name = name;
			blob[blobs].mode = list->mode;
			blobs++;
			continue;

		}
		die("unhandled object '%s' given.", name);
	}
	if (rev.prune_data.nr) {
		if (!path)
			path = rev.prune_data.items[0].match;
		paths += rev.prune_data.nr;
	}

	/*
	 * Now, do the arguments look reasonable?
	 */
	if (!ents) {
		switch (blobs) {
		case 0:
			result = builtin_diff_files(&rev, argc, argv);
			break;
		case 1:
			if (paths != 1)
				usage(builtin_diff_usage);
			result = builtin_diff_b_f(&rev, argc, argv, blob, path);
			break;
		case 2:
			if (paths)
				usage(builtin_diff_usage);
			result = builtin_diff_blobs(&rev, argc, argv, blob);
			break;
		default:
			usage(builtin_diff_usage);
		}
	}
	else if (blobs)
		usage(builtin_diff_usage);
	else if (ents == 1)
		result = builtin_diff_index(&rev, argc, argv);
	else if (ents == 2)
		result = builtin_diff_tree(&rev, argc, argv, ent);
	else if (ent[0].item->flags & UNINTERESTING) {
		/*
		 * diff A...B where there is at least one merge base
		 * between A and B.  We have ent[0] == merge-base,
		 * ent[ents-2] == A, and ent[ents-1] == B.  Show diff
		 * between the base and B.  Note that we pick one
		 * merge base at random if there are more than one.
		 */
		ent[1] = ent[ents-1];
		result = builtin_diff_tree(&rev, argc, argv, ent);
	} else
		result = builtin_diff_combined(&rev, argc, argv,
					       ent, ents);
	result = diff_result_code(&rev.diffopt, result);
	if (1 < rev.diffopt.skip_stat_unmatch)
		refresh_index_quietly();
	return result;
}
Example #6
0
File: log.c Project: AbelTian/git
int cmd_format_patch(int argc, const char **argv, const char *prefix)
{
	struct commit *commit;
	struct commit **list = NULL;
	struct rev_info rev;
	struct setup_revision_opt s_r_opt;
	int nr = 0, total, i;
	int use_stdout = 0;
	int start_number = -1;
	int just_numbers = 0;
	int ignore_if_in_upstream = 0;
	int cover_letter = -1;
	int boundary_count = 0;
	int no_binary_diff = 0;
	struct commit *origin = NULL;
	const char *in_reply_to = NULL;
	struct patch_ids ids;
	struct strbuf buf = STRBUF_INIT;
	int use_patch_format = 0;
	int quiet = 0;
	int reroll_count = -1;
	char *branch_name = NULL;
	char *from = NULL;
	const struct option builtin_format_patch_options[] = {
		{ OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
			    N_("use [PATCH n/m] even with a single patch"),
			    PARSE_OPT_NOARG, numbered_callback },
		{ OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL,
			    N_("use [PATCH] even with multiple patches"),
			    PARSE_OPT_NOARG, no_numbered_callback },
		OPT_BOOL('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
		OPT_BOOL(0, "stdout", &use_stdout,
			    N_("print patches to standard out")),
		OPT_BOOL(0, "cover-letter", &cover_letter,
			    N_("generate a cover letter")),
		OPT_BOOL(0, "numbered-files", &just_numbers,
			    N_("use simple number sequence for output file names")),
		OPT_STRING(0, "suffix", &fmt_patch_suffix, N_("sfx"),
			    N_("use <sfx> instead of '.patch'")),
		OPT_INTEGER(0, "start-number", &start_number,
			    N_("start numbering patches at <n> instead of 1")),
		OPT_INTEGER('v', "reroll-count", &reroll_count,
			    N_("mark the series as Nth re-roll")),
		{ OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
			    N_("Use [<prefix>] instead of [PATCH]"),
			    PARSE_OPT_NONEG, subject_prefix_callback },
		{ OPTION_CALLBACK, 'o', "output-directory", &output_directory,
			    N_("dir"), N_("store resulting files in <dir>"),
			    PARSE_OPT_NONEG, output_directory_callback },
		{ OPTION_CALLBACK, 'k', "keep-subject", &rev, NULL,
			    N_("don't strip/add [PATCH]"),
			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback },
		OPT_BOOL(0, "no-binary", &no_binary_diff,
			 N_("don't output binary diffs")),
		OPT_BOOL(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
			 N_("don't include a patch matching a commit upstream")),
		{ OPTION_SET_INT, 'p', "no-stat", &use_patch_format, NULL,
		  N_("show patch format instead of default (patch + stat)"),
		  PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1},
		OPT_GROUP(N_("Messaging")),
		{ OPTION_CALLBACK, 0, "add-header", NULL, N_("header"),
			    N_("add email header"), 0, header_callback },
		{ OPTION_CALLBACK, 0, "to", NULL, N_("email"), N_("add To: header"),
			    0, to_callback },
		{ OPTION_CALLBACK, 0, "cc", NULL, N_("email"), N_("add Cc: header"),
			    0, cc_callback },
		{ OPTION_CALLBACK, 0, "from", &from, N_("ident"),
			    N_("set From address to <ident> (or committer ident if absent)"),
			    PARSE_OPT_OPTARG, from_callback },
		OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"),
			    N_("make first mail a reply to <message-id>")),
		{ OPTION_CALLBACK, 0, "attach", &rev, N_("boundary"),
			    N_("attach the patch"), PARSE_OPT_OPTARG,
			    attach_callback },
		{ OPTION_CALLBACK, 0, "inline", &rev, N_("boundary"),
			    N_("inline the patch"),
			    PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
			    inline_callback },
		{ OPTION_CALLBACK, 0, "thread", &thread, N_("style"),
			    N_("enable message threading, styles: shallow, deep"),
			    PARSE_OPT_OPTARG, thread_callback },
		OPT_STRING(0, "signature", &signature, N_("signature"),
			    N_("add a signature")),
		OPT_FILENAME(0, "signature-file", &signature_file,
				N_("add a signature from a file")),
		OPT__QUIET(&quiet, N_("don't print the patch filenames")),
		OPT_END()
	};

	extra_hdr.strdup_strings = 1;
	extra_to.strdup_strings = 1;
	extra_cc.strdup_strings = 1;
	init_grep_defaults();
	git_config(git_format_config, NULL);
	init_revisions(&rev, prefix);
	rev.commit_format = CMIT_FMT_EMAIL;
	rev.verbose_header = 1;
	rev.diff = 1;
	rev.max_parents = 1;
	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
	rev.subject_prefix = fmt_patch_subject_prefix;
	memset(&s_r_opt, 0, sizeof(s_r_opt));
	s_r_opt.def = "HEAD";
	s_r_opt.revarg_opt = REVARG_COMMITTISH;

	if (default_attach) {
		rev.mime_boundary = default_attach;
		rev.no_inline = 1;
	}

	/*
	 * Parse the arguments before setup_revisions(), or something
	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
	 * possibly a valid SHA1.
	 */
	argc = parse_options(argc, argv, prefix, builtin_format_patch_options,
			     builtin_format_patch_usage,
			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
			     PARSE_OPT_KEEP_DASHDASH);

	if (0 < reroll_count) {
		struct strbuf sprefix = STRBUF_INIT;
		strbuf_addf(&sprefix, "%s v%d",
			    rev.subject_prefix, reroll_count);
		rev.reroll_count = reroll_count;
		rev.subject_prefix = strbuf_detach(&sprefix, NULL);
	}

	for (i = 0; i < extra_hdr.nr; i++) {
		strbuf_addstr(&buf, extra_hdr.items[i].string);
		strbuf_addch(&buf, '\n');
	}

	if (extra_to.nr)
		strbuf_addstr(&buf, "To: ");
	for (i = 0; i < extra_to.nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_to.items[i].string);
		if (i + 1 < extra_to.nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	if (extra_cc.nr)
		strbuf_addstr(&buf, "Cc: ");
	for (i = 0; i < extra_cc.nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_cc.items[i].string);
		if (i + 1 < extra_cc.nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	rev.extra_headers = strbuf_detach(&buf, NULL);

	if (from) {
		if (split_ident_line(&rev.from_ident, from, strlen(from)))
			die(_("invalid ident line: %s"), from);
	}

	if (start_number < 0)
		start_number = 1;

	/*
	 * If numbered is set solely due to format.numbered in config,
	 * and it would conflict with --keep-subject (-k) from the
	 * command line, reset "numbered".
	 */
	if (numbered && keep_subject && !numbered_cmdline_opt)
		numbered = 0;

	if (numbered && keep_subject)
		die (_("-n and -k are mutually exclusive."));
	if (keep_subject && subject_prefix)
		die (_("--subject-prefix and -k are mutually exclusive."));
	rev.preserve_subject = keep_subject;

	argc = setup_revisions(argc, argv, &rev, &s_r_opt);
	if (argc > 1)
		die (_("unrecognized argument: %s"), argv[1]);

	if (rev.diffopt.output_format & DIFF_FORMAT_NAME)
		die(_("--name-only does not make sense"));
	if (rev.diffopt.output_format & DIFF_FORMAT_NAME_STATUS)
		die(_("--name-status does not make sense"));
	if (rev.diffopt.output_format & DIFF_FORMAT_CHECKDIFF)
		die(_("--check does not make sense"));

	if (!use_patch_format &&
		(!rev.diffopt.output_format ||
		 rev.diffopt.output_format == DIFF_FORMAT_PATCH))
		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY;

	/* Always generate a patch */
	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;

	if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
		DIFF_OPT_SET(&rev.diffopt, BINARY);

	if (rev.show_notes)
		init_display_notes(&rev.notes_opt);

	if (!use_stdout)
		output_directory = set_outdir(prefix, output_directory);
	else
		setup_pager();

	if (output_directory) {
		if (use_stdout)
			die(_("standard output, or directory, which one?"));
		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
			die_errno(_("Could not create directory '%s'"),
				  output_directory);
	}

	if (rev.pending.nr == 1) {
		int check_head = 0;

		if (rev.max_count < 0 && !rev.show_root_diff) {
			/*
			 * This is traditional behaviour of "git format-patch
			 * origin" that prepares what the origin side still
			 * does not have.
			 */
			rev.pending.objects[0].item->flags |= UNINTERESTING;
			add_head_to_pending(&rev);
			check_head = 1;
		}
		/*
		 * Otherwise, it is "format-patch -22 HEAD", and/or
		 * "format-patch --root HEAD".  The user wants
		 * get_revision() to do the usual traversal.
		 */

		if (!strcmp(rev.pending.objects[0].name, "HEAD"))
			check_head = 1;

		if (check_head) {
			unsigned char sha1[20];
			const char *ref, *v;
			ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
						 sha1, NULL);
			if (ref && skip_prefix(ref, "refs/heads/", &v))
				branch_name = xstrdup(v);
			else
				branch_name = xstrdup(""); /* no branch */
		}
	}

	/*
	 * We cannot move this anywhere earlier because we do want to
	 * know if --root was given explicitly from the command line.
	 */
	rev.show_root_diff = 1;

	if (ignore_if_in_upstream) {
		/* Don't say anything if head and upstream are the same. */
		if (rev.pending.nr == 2) {
			struct object_array_entry *o = rev.pending.objects;
			if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
				return 0;
		}
		get_patch_ids(&rev, &ids);
	}

	if (!use_stdout)
		realstdout = xfdopen(xdup(1), "w");

	if (prepare_revision_walk(&rev))
		die(_("revision walk setup failed"));
	rev.boundary = 1;
	while ((commit = get_revision(&rev)) != NULL) {
		if (commit->object.flags & BOUNDARY) {
			boundary_count++;
			origin = (boundary_count == 1) ? commit : NULL;
			continue;
		}

		if (ignore_if_in_upstream &&
				has_commit_patch_id(commit, &ids))
			continue;

		nr++;
		REALLOC_ARRAY(list, nr);
		list[nr - 1] = commit;
	}
	if (nr == 0)
		/* nothing to do */
		return 0;
	total = nr;
	if (!keep_subject && auto_number && total > 1)
		numbered = 1;
	if (numbered)
		rev.total = total + start_number - 1;
	if (cover_letter == -1) {
		if (config_cover_letter == COVER_AUTO)
			cover_letter = (total > 1);
		else
			cover_letter = (config_cover_letter == COVER_ON);
	}

	if (!signature) {
		; /* --no-signature inhibits all signatures */
	} else if (signature && signature != git_version_string) {
		; /* non-default signature already set */
	} else if (signature_file) {
		struct strbuf buf = STRBUF_INIT;

		if (strbuf_read_file(&buf, signature_file, 128) < 0)
			die_errno(_("unable to read signature file '%s'"), signature_file);
		signature = strbuf_detach(&buf, NULL);
	}

	if (in_reply_to || thread || cover_letter)
		rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
	if (in_reply_to) {
		const char *msgid = clean_message_id(in_reply_to);
		string_list_append(rev.ref_message_ids, msgid);
	}
	rev.numbered_files = just_numbers;
	rev.patch_suffix = fmt_patch_suffix;
	if (cover_letter) {
		if (thread)
			gen_message_id(&rev, "cover");
		make_cover_letter(&rev, use_stdout,
				  origin, nr, list, branch_name, quiet);
		total++;
		start_number--;
	}
	rev.add_signoff = do_signoff;
	while (0 <= --nr) {
		int shown;
		commit = list[nr];
		rev.nr = total - nr + (start_number - 1);
		/* Make the second and subsequent mails replies to the first */
		if (thread) {
			/* Have we already had a message ID? */
			if (rev.message_id) {
				/*
				 * For deep threading: make every mail
				 * a reply to the previous one, no
				 * matter what other options are set.
				 *
				 * For shallow threading:
				 *
				 * Without --cover-letter and
				 * --in-reply-to, make every mail a
				 * reply to the one before.
				 *
				 * With --in-reply-to but no
				 * --cover-letter, make every mail a
				 * reply to the <reply-to>.
				 *
				 * With --cover-letter, make every
				 * mail but the cover letter a reply
				 * to the cover letter.  The cover
				 * letter is a reply to the
				 * --in-reply-to, if specified.
				 */
				if (thread == THREAD_SHALLOW
				    && rev.ref_message_ids->nr > 0
				    && (!cover_letter || rev.nr > 1))
					free(rev.message_id);
				else
					string_list_append(rev.ref_message_ids,
							   rev.message_id);
			}
			gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
		}

		if (!use_stdout &&
		    reopen_stdout(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
			die(_("Failed to create output files"));
		shown = log_tree_commit(&rev, commit);
		free_commit_buffer(commit);

		/* We put one extra blank line between formatted
		 * patches and this flag is used by log-tree code
		 * to see if it needs to emit a LF before showing
		 * the log; when using one file per patch, we do
		 * not want the extra blank line.
		 */
		if (!use_stdout)
			rev.shown_one = 0;
		if (shown) {
			if (rev.mime_boundary)
				printf("\n--%s%s--\n\n\n",
				       mime_boundary_leader,
				       rev.mime_boundary);
			else
				print_signature();
		}
		if (!use_stdout)
			fclose(stdout);
	}
	free(list);
	free(branch_name);
	string_list_clear(&extra_to, 0);
	string_list_clear(&extra_cc, 0);
	string_list_clear(&extra_hdr, 0);
	if (ignore_if_in_upstream)
		free_patch_ids(&ids);
	return 0;
}
Example #7
0
int cmd_format_patch(int argc, const char **argv, const char *prefix)
{
	struct commit *commit;
	struct commit **list = NULL;
	struct rev_info rev;
	int nr = 0, total, i, j;
	int use_stdout = 0;
	int start_number = -1;
	int keep_subject = 0;
	int numbered_files = 0;		/* _just_ numbers */
	int subject_prefix = 0;
	int ignore_if_in_upstream = 0;
	int thread = 0;
	int cover_letter = 0;
	int boundary_count = 0;
	int no_binary_diff = 0;
	struct commit *origin = NULL, *head = NULL;
	const char *in_reply_to = NULL;
	struct patch_ids ids;
	char *add_signoff = NULL;
	struct strbuf buf = STRBUF_INIT;

	git_config(git_format_config, NULL);
	init_revisions(&rev, prefix);
	rev.commit_format = CMIT_FMT_EMAIL;
	rev.verbose_header = 1;
	rev.diff = 1;
	rev.combine_merges = 0;
	rev.ignore_merges = 1;
	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);

	rev.subject_prefix = fmt_patch_subject_prefix;

	/*
	 * Parse the arguments before setup_revisions(), or something
	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
	 * possibly a valid SHA1.
	 */
	for (i = 1, j = 1; i < argc; i++) {
		if (!strcmp(argv[i], "--stdout"))
			use_stdout = 1;
		else if (!strcmp(argv[i], "-n") ||
				!strcmp(argv[i], "--numbered"))
			numbered = 1;
		else if (!strcmp(argv[i], "-N") ||
				!strcmp(argv[i], "--no-numbered")) {
			numbered = 0;
			auto_number = 0;
		}
		else if (!prefixcmp(argv[i], "--start-number="))
			start_number = strtol(argv[i] + 15, NULL, 10);
		else if (!strcmp(argv[i], "--numbered-files"))
			numbered_files = 1;
		else if (!strcmp(argv[i], "--start-number")) {
			i++;
			if (i == argc)
				die("Need a number for --start-number");
			start_number = strtol(argv[i], NULL, 10);
		}
		else if (!prefixcmp(argv[i], "--cc=")) {
			ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
			extra_cc[extra_cc_nr++] = xstrdup(argv[i] + 5);
		}
		else if (!strcmp(argv[i], "-k") ||
				!strcmp(argv[i], "--keep-subject")) {
			keep_subject = 1;
			rev.total = -1;
		}
		else if (!strcmp(argv[i], "--output-directory") ||
			 !strcmp(argv[i], "-o")) {
			i++;
			if (argc <= i)
				die("Which directory?");
			if (output_directory)
				die("Two output directories?");
			output_directory = argv[i];
		}
		else if (!strcmp(argv[i], "--signoff") ||
			 !strcmp(argv[i], "-s")) {
			const char *committer;
			const char *endpos;
			committer = git_committer_info(IDENT_ERROR_ON_NO_NAME);
			endpos = strchr(committer, '>');
			if (!endpos)
				die("bogus committer info %s\n", committer);
			add_signoff = xmemdupz(committer, endpos - committer + 1);
		}
		else if (!strcmp(argv[i], "--attach")) {
			rev.mime_boundary = git_version_string;
			rev.no_inline = 1;
		}
		else if (!prefixcmp(argv[i], "--attach=")) {
			rev.mime_boundary = argv[i] + 9;
			rev.no_inline = 1;
		}
		else if (!strcmp(argv[i], "--inline")) {
			rev.mime_boundary = git_version_string;
			rev.no_inline = 0;
		}
		else if (!prefixcmp(argv[i], "--inline=")) {
			rev.mime_boundary = argv[i] + 9;
			rev.no_inline = 0;
		}
		else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
			ignore_if_in_upstream = 1;
		else if (!strcmp(argv[i], "--thread"))
			thread = 1;
		else if (!prefixcmp(argv[i], "--in-reply-to="))
			in_reply_to = argv[i] + 14;
		else if (!strcmp(argv[i], "--in-reply-to")) {
			i++;
			if (i == argc)
				die("Need a Message-Id for --in-reply-to");
			in_reply_to = argv[i];
		} else if (!prefixcmp(argv[i], "--subject-prefix=")) {
			subject_prefix = 1;
			rev.subject_prefix = argv[i] + 17;
		} else if (!prefixcmp(argv[i], "--suffix="))
			fmt_patch_suffix = argv[i] + 9;
		else if (!strcmp(argv[i], "--cover-letter"))
			cover_letter = 1;
		else if (!strcmp(argv[i], "--no-binary"))
			no_binary_diff = 1;
		else
			argv[j++] = argv[i];
	}
	argc = j;

	for (i = 0; i < extra_hdr_nr; i++) {
		strbuf_addstr(&buf, extra_hdr[i]);
		strbuf_addch(&buf, '\n');
	}

	if (extra_to_nr)
		strbuf_addstr(&buf, "To: ");
	for (i = 0; i < extra_to_nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_to[i]);
		if (i + 1 < extra_to_nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	if (extra_cc_nr)
		strbuf_addstr(&buf, "Cc: ");
	for (i = 0; i < extra_cc_nr; i++) {
		if (i)
			strbuf_addstr(&buf, "    ");
		strbuf_addstr(&buf, extra_cc[i]);
		if (i + 1 < extra_cc_nr)
			strbuf_addch(&buf, ',');
		strbuf_addch(&buf, '\n');
	}

	rev.extra_headers = strbuf_detach(&buf, 0);

	if (start_number < 0)
		start_number = 1;
	if (numbered && keep_subject)
		die ("-n and -k are mutually exclusive.");
	if (keep_subject && subject_prefix)
		die ("--subject-prefix and -k are mutually exclusive.");
	if (numbered_files && use_stdout)
		die ("--numbered-files and --stdout are mutually exclusive.");

	argc = setup_revisions(argc, argv, &rev, "HEAD");
	if (argc > 1)
		die ("unrecognized argument: %s", argv[1]);

	if (!rev.diffopt.output_format
		|| rev.diffopt.output_format == DIFF_FORMAT_PATCH)
		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;

	if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
		DIFF_OPT_SET(&rev.diffopt, BINARY);

	if (!output_directory && !use_stdout)
		output_directory = prefix;

	if (output_directory) {
		if (use_stdout)
			die("standard output, or directory, which one?");
		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
			die("Could not create directory %s",
			    output_directory);
	}

	if (rev.pending.nr == 1) {
		if (rev.max_count < 0 && !rev.show_root_diff) {
			/*
			 * This is traditional behaviour of "git format-patch
			 * origin" that prepares what the origin side still
			 * does not have.
			 */
			rev.pending.objects[0].item->flags |= UNINTERESTING;
			add_head_to_pending(&rev);
		}
		/*
		 * Otherwise, it is "format-patch -22 HEAD", and/or
		 * "format-patch --root HEAD".  The user wants
		 * get_revision() to do the usual traversal.
		 */
	}
	if (cover_letter) {
		/* remember the range */
		int i;
		for (i = 0; i < rev.pending.nr; i++) {
			struct object *o = rev.pending.objects[i].item;
			if (!(o->flags & UNINTERESTING))
				head = (struct commit *)o;
		}
		/* We can't generate a cover letter without any patches */
		if (!head)
			return 0;
	}

	if (ignore_if_in_upstream)
		get_patch_ids(&rev, &ids, prefix);

	if (!use_stdout)
		realstdout = xfdopen(xdup(1), "w");

	if (prepare_revision_walk(&rev))
		die("revision walk setup failed");
	rev.boundary = 1;
	while ((commit = get_revision(&rev)) != NULL) {
		if (commit->object.flags & BOUNDARY) {
			boundary_count++;
			origin = (boundary_count == 1) ? commit : NULL;
			continue;
		}

		/* ignore merges */
		if (commit->parents && commit->parents->next)
			continue;

		if (ignore_if_in_upstream &&
				has_commit_patch_id(commit, &ids))
			continue;

		nr++;
		list = xrealloc(list, nr * sizeof(list[0]));
		list[nr - 1] = commit;
	}
	total = nr;
	if (!keep_subject && auto_number && total > 1)
		numbered = 1;
	if (numbered)
		rev.total = total + start_number - 1;
	if (in_reply_to)
		rev.ref_message_id = clean_message_id(in_reply_to);
	if (cover_letter) {
		if (thread)
			gen_message_id(&rev, "cover");
		make_cover_letter(&rev, use_stdout, numbered, numbered_files,
				  origin, nr, list, head);
		total++;
		start_number--;
	}
	rev.add_signoff = add_signoff;
	while (0 <= --nr) {
		int shown;
		commit = list[nr];
		rev.nr = total - nr + (start_number - 1);
		/* Make the second and subsequent mails replies to the first */
		if (thread) {
			/* Have we already had a message ID? */
			if (rev.message_id) {
				/*
				 * If we've got the ID to be a reply
				 * to, discard the current ID;
				 * otherwise, make everything a reply
				 * to that.
				 */
				if (rev.ref_message_id)
					free(rev.message_id);
				else
					rev.ref_message_id = rev.message_id;
			}
			gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
		}
		if (!use_stdout && reopen_stdout(numbered_files ? NULL :
				get_oneline_for_filename(commit, keep_subject),
				rev.nr, rev.total))
			die("Failed to create output files");
		shown = log_tree_commit(&rev, commit);
		free(commit->buffer);
		commit->buffer = NULL;

		/* We put one extra blank line between formatted
		 * patches and this flag is used by log-tree code
		 * to see if it needs to emit a LF before showing
		 * the log; when using one file per patch, we do
		 * not want the extra blank line.
		 */
		if (!use_stdout)
			rev.shown_one = 0;
		if (shown) {
			if (rev.mime_boundary)
				printf("\n--%s%s--\n\n\n",
				       mime_boundary_leader,
				       rev.mime_boundary);
			else
				printf("-- \n%s\n\n", git_version_string);
		}
		if (!use_stdout)
			fclose(stdout);
	}
	free(list);
	if (ignore_if_in_upstream)
		free_patch_ids(&ids);
	return 0;
}
Example #8
0
File: diff.c Project: 136357477/git
int cmd_diff(int argc, const char **argv, const char *prefix)
{
	int i;
	struct rev_info rev;
	struct object_array ent = OBJECT_ARRAY_INIT;
	int blobs = 0, paths = 0;
	struct blobinfo blob[2];
	int nongit = 0, no_index = 0;
	int result = 0;

	/*
	 * We could get N tree-ish in the rev.pending_objects list.
	 * Also there could be M blobs there, and P pathspecs.
	 *
	 * N=0, M=0:
	 *	cache vs files (diff-files)
	 * N=0, M=2:
	 *      compare two random blobs.  P must be zero.
	 * N=0, M=1, P=1:
	 *	compare a blob with a working tree file.
	 *
	 * N=1, M=0:
	 *      tree vs cache (diff-index --cached)
	 *
	 * N=2, M=0:
	 *      tree vs tree (diff-tree)
	 *
	 * N=0, M=0, P=2:
	 *      compare two filesystem entities (aka --no-index).
	 *
	 * Other cases are errors.
	 */

	/* Were we asked to do --no-index explicitly? */
	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "--")) {
			i++;
			break;
		}
		if (!strcmp(argv[i], "--no-index"))
			no_index = DIFF_NO_INDEX_EXPLICIT;
		if (argv[i][0] != '-')
			break;
	}

	if (!no_index)
		prefix = setup_git_directory_gently(&nongit);

	/*
	 * Treat git diff with at least one path outside of the
	 * repo the same as if the command would have been executed
	 * outside of a git repository.  In this case it behaves
	 * the same way as "git diff --no-index <a> <b>", which acts
	 * as a colourful "diff" replacement.
	 */
	if (nongit || ((argc == i + 2) &&
		       (!path_inside_repo(prefix, argv[i]) ||
			!path_inside_repo(prefix, argv[i + 1]))))
		no_index = DIFF_NO_INDEX_IMPLICIT;

	if (!no_index)
		gitmodules_config();
	init_diff_ui_defaults();
	git_config(git_diff_ui_config, NULL);
	precompose_argv(argc, argv);

	init_revisions(&rev, prefix);

	if (no_index && argc != i + 2) {
		if (no_index == DIFF_NO_INDEX_IMPLICIT) {
			/*
			 * There was no --no-index and there were not two
			 * paths. It is possible that the user intended
			 * to do an inside-repository operation.
			 */
			fprintf(stderr, "Not a git repository\n");
			fprintf(stderr,
				"To compare two paths outside a working tree:\n");
		}
		/* Give the usage message for non-repository usage and exit. */
		usagef("git diff %s <path> <path>",
		       no_index == DIFF_NO_INDEX_EXPLICIT ?
		       "--no-index" : "[--no-index]");

	}
	if (no_index)
		/* If this is a no-index diff, just run it and exit there. */
		diff_no_index(&rev, argc, argv);

	/* Otherwise, we are doing the usual "git" diff */
	rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;

	/* Scale to real terminal size and respect statGraphWidth config */
	rev.diffopt.stat_width = -1;
	rev.diffopt.stat_graph_width = -1;

	/* Default to let external and textconv be used */
	DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
	DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);

	if (nongit)
		die(_("Not a git repository"));
	argc = setup_revisions(argc, argv, &rev, NULL);
	if (!rev.diffopt.output_format) {
		rev.diffopt.output_format = DIFF_FORMAT_PATCH;
		diff_setup_done(&rev.diffopt);
	}

	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);

	setup_diff_pager(&rev.diffopt);

	/*
	 * Do we have --cached and not have a pending object, then
	 * default to HEAD by hand.  Eek.
	 */
	if (!rev.pending.nr) {
		int i;
		for (i = 1; i < argc; i++) {
			const char *arg = argv[i];
			if (!strcmp(arg, "--"))
				break;
			else if (!strcmp(arg, "--cached") ||
				 !strcmp(arg, "--staged")) {
				add_head_to_pending(&rev);
				if (!rev.pending.nr) {
					struct tree *tree;
					tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
					add_pending_object(&rev, &tree->object, "HEAD");
				}
				break;
			}
		}
	}

	for (i = 0; i < rev.pending.nr; i++) {
		struct object_array_entry *entry = &rev.pending.objects[i];
		struct object *obj = entry->item;
		const char *name = entry->name;
		int flags = (obj->flags & UNINTERESTING);
		if (!obj->parsed)
			obj = parse_object(obj->oid.hash);
		obj = deref_tag(obj, NULL, 0);
		if (!obj)
			die(_("invalid object '%s' given."), name);
		if (obj->type == OBJ_COMMIT)
			obj = &((struct commit *)obj)->tree->object;

		if (obj->type == OBJ_TREE) {
			obj->flags |= flags;
			add_object_array(obj, name, &ent);
		} else if (obj->type == OBJ_BLOB) {
			if (2 <= blobs)
				die(_("more than two blobs given: '%s'"), name);
			hashcpy(blob[blobs].sha1, obj->oid.hash);
			blob[blobs].name = name;
			blob[blobs].mode = entry->mode;
			blobs++;

		} else {
			die(_("unhandled object '%s' given."), name);
		}
	}
	if (rev.prune_data.nr)
		paths += rev.prune_data.nr;

	/*
	 * Now, do the arguments look reasonable?
	 */
	if (!ent.nr) {
		switch (blobs) {
		case 0:
			result = builtin_diff_files(&rev, argc, argv);
			break;
		case 1:
			if (paths != 1)
				usage(builtin_diff_usage);
			result = builtin_diff_b_f(&rev, argc, argv, blob);
			break;
		case 2:
			if (paths)
				usage(builtin_diff_usage);
			result = builtin_diff_blobs(&rev, argc, argv, blob);
			break;
		default:
			usage(builtin_diff_usage);
		}
	}
	else if (blobs)
		usage(builtin_diff_usage);
	else if (ent.nr == 1)
		result = builtin_diff_index(&rev, argc, argv);
	else if (ent.nr == 2)
		result = builtin_diff_tree(&rev, argc, argv,
					   &ent.objects[0], &ent.objects[1]);
	else if (ent.objects[0].item->flags & UNINTERESTING) {
		/*
		 * diff A...B where there is at least one merge base
		 * between A and B.  We have ent.objects[0] ==
		 * merge-base, ent.objects[ents-2] == A, and
		 * ent.objects[ents-1] == B.  Show diff between the
		 * base and B.  Note that we pick one merge base at
		 * random if there are more than one.
		 */
		result = builtin_diff_tree(&rev, argc, argv,
					   &ent.objects[0],
					   &ent.objects[ent.nr-1]);
	} else
		result = builtin_diff_combined(&rev, argc, argv,
					       ent.objects, ent.nr);
	result = diff_result_code(&rev.diffopt, result);
	if (1 < rev.diffopt.skip_stat_unmatch)
		refresh_index_quietly();
	return result;
}
Example #9
0
int cmd_diff(int argc, const char **argv, const char *prefix)
{
	int i;
	struct rev_info rev;
	struct object_array ent = OBJECT_ARRAY_INIT;
	int blobs = 0, paths = 0;
	struct blobinfo blob[2];
	int nongit;
	int result = 0;

	/*
	 * We could get N tree-ish in the rev.pending_objects list.
	 * Also there could be M blobs there, and P pathspecs.
	 *
	 * N=0, M=0:
	 *	cache vs files (diff-files)
	 * N=0, M=2:
	 *      compare two random blobs.  P must be zero.
	 * N=0, M=1, P=1:
	 *	compare a blob with a working tree file.
	 *
	 * N=1, M=0:
	 *      tree vs cache (diff-index --cached)
	 *
	 * N=2, M=0:
	 *      tree vs tree (diff-tree)
	 *
	 * N=0, M=0, P=2:
	 *      compare two filesystem entities (aka --no-index).
	 *
	 * Other cases are errors.
	 */

	prefix = setup_git_directory_gently(&nongit);
	gitmodules_config();
	git_config(git_diff_ui_config, NULL);

	init_revisions(&rev, prefix);

	/* If this is a no-index diff, just run it and exit there. */
	diff_no_index(&rev, argc, argv, nongit, prefix);

	/* Otherwise, we are doing the usual "git" diff */
	rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;

	/* Scale to real terminal size and respect statGraphWidth config */
	rev.diffopt.stat_width = -1;
	rev.diffopt.stat_graph_width = -1;

	/* Default to let external and textconv be used */
	DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
	DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);

	if (nongit)
		die(_("Not a git repository"));
	argc = setup_revisions(argc, argv, &rev, NULL);
	if (!rev.diffopt.output_format) {
		rev.diffopt.output_format = DIFF_FORMAT_PATCH;
		diff_setup_done(&rev.diffopt);
	}

	DIFF_OPT_SET(&rev.diffopt, RECURSIVE);

	setup_diff_pager(&rev.diffopt);

	/*
	 * Do we have --cached and not have a pending object, then
	 * default to HEAD by hand.  Eek.
	 */
	if (!rev.pending.nr) {
		int i;
		for (i = 1; i < argc; i++) {
			const char *arg = argv[i];
			if (!strcmp(arg, "--"))
				break;
			else if (!strcmp(arg, "--cached") ||
				 !strcmp(arg, "--staged")) {
				add_head_to_pending(&rev);
				if (!rev.pending.nr) {
					struct tree *tree;
					tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
					add_pending_object(&rev, &tree->object, "HEAD");
				}
				break;
			}
		}
	}

	for (i = 0; i < rev.pending.nr; i++) {
		struct object_array_entry *entry = &rev.pending.objects[i];
		struct object *obj = entry->item;
		const char *name = entry->name;
		int flags = (obj->flags & UNINTERESTING);
		if (!obj->parsed)
			obj = parse_object(obj->sha1);
		obj = deref_tag(obj, NULL, 0);
		if (!obj)
			die(_("invalid object '%s' given."), name);
		if (obj->type == OBJ_COMMIT)
			obj = &((struct commit *)obj)->tree->object;

		if (obj->type == OBJ_TREE) {
			obj->flags |= flags;
			add_object_array(obj, name, &ent);
		} else if (obj->type == OBJ_BLOB) {
			if (2 <= blobs)
				die(_("more than two blobs given: '%s'"), name);
			hashcpy(blob[blobs].sha1, obj->sha1);
			blob[blobs].name = name;
			blob[blobs].mode = entry->mode;
			blobs++;

		} else {
			die(_("unhandled object '%s' given."), name);
		}
	}
	if (rev.prune_data.nr)
		paths += rev.prune_data.nr;

	/*
	 * Now, do the arguments look reasonable?
	 */
	if (!ent.nr) {
		switch (blobs) {
		case 0:
			result = builtin_diff_files(&rev, argc, argv);
			break;
		case 1:
			if (paths != 1)
				usage(builtin_diff_usage);
			result = builtin_diff_b_f(&rev, argc, argv, blob);
			break;
		case 2:
			if (paths)
				usage(builtin_diff_usage);
			result = builtin_diff_blobs(&rev, argc, argv, blob);
			break;
		default:
			usage(builtin_diff_usage);
		}
	}
	else if (blobs)
		usage(builtin_diff_usage);
	else if (ent.nr == 1)
		result = builtin_diff_index(&rev, argc, argv);
	else if (ent.nr == 2)
		result = builtin_diff_tree(&rev, argc, argv,
					   &ent.objects[0], &ent.objects[1]);
	else if (ent.objects[0].item->flags & UNINTERESTING) {
		/*
		 * diff A...B where there is at least one merge base
		 * between A and B.  We have ent.objects[0] ==
		 * merge-base, ent.objects[ents-2] == A, and
		 * ent.objects[ents-1] == B.  Show diff between the
		 * base and B.  Note that we pick one merge base at
		 * random if there are more than one.
		 */
		result = builtin_diff_tree(&rev, argc, argv,
					   &ent.objects[0],
					   &ent.objects[ent.nr-1]);
	} else
		result = builtin_diff_combined(&rev, argc, argv,
					       ent.objects, ent.nr);
	result = diff_result_code(&rev.diffopt, result);
	if (1 < rev.diffopt.skip_stat_unmatch)
		refresh_index_quietly();
	return result;
}