merge(third_party/git): Merge squashed git subtree at v2.23.0
Merge commit '1b593e1ea4' as 'third_party/git'
			
			
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					 3629 changed files with 1139935 additions and 0 deletions
				
			
		
							
								
								
									
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								third_party/git/builtin/fmt-merge-msg.c
									
										
									
									
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										719
									
								
								third_party/git/builtin/fmt-merge-msg.c
									
										
									
									
										vendored
									
									
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							|  | @ -0,0 +1,719 @@ | |||
| #include "builtin.h" | ||||
| #include "cache.h" | ||||
| #include "config.h" | ||||
| #include "refs.h" | ||||
| #include "object-store.h" | ||||
| #include "commit.h" | ||||
| #include "diff.h" | ||||
| #include "revision.h" | ||||
| #include "tag.h" | ||||
| #include "string-list.h" | ||||
| #include "branch.h" | ||||
| #include "fmt-merge-msg.h" | ||||
| #include "gpg-interface.h" | ||||
| #include "repository.h" | ||||
| #include "commit-reach.h" | ||||
| 
 | ||||
| static const char * const fmt_merge_msg_usage[] = { | ||||
| 	N_("git fmt-merge-msg [-m <message>] [--log[=<n>] | --no-log] [--file <file>]"), | ||||
| 	NULL | ||||
| }; | ||||
| 
 | ||||
| static int use_branch_desc; | ||||
| 
 | ||||
| int fmt_merge_msg_config(const char *key, const char *value, void *cb) | ||||
| { | ||||
| 	if (!strcmp(key, "merge.log") || !strcmp(key, "merge.summary")) { | ||||
| 		int is_bool; | ||||
| 		merge_log_config = git_config_bool_or_int(key, value, &is_bool); | ||||
| 		if (!is_bool && merge_log_config < 0) | ||||
| 			return error("%s: negative length %s", key, value); | ||||
| 		if (is_bool && merge_log_config) | ||||
| 			merge_log_config = DEFAULT_MERGE_LOG_LEN; | ||||
| 	} else if (!strcmp(key, "merge.branchdesc")) { | ||||
| 		use_branch_desc = git_config_bool(key, value); | ||||
| 	} else { | ||||
| 		return git_default_config(key, value, cb); | ||||
| 	} | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| /* merge data per repository where the merged tips came from */ | ||||
| struct src_data { | ||||
| 	struct string_list branch, tag, r_branch, generic; | ||||
| 	int head_status; | ||||
| }; | ||||
| 
 | ||||
| struct origin_data { | ||||
| 	struct object_id oid; | ||||
| 	unsigned is_local_branch:1; | ||||
| }; | ||||
| 
 | ||||
| static void init_src_data(struct src_data *data) | ||||
| { | ||||
| 	data->branch.strdup_strings = 1; | ||||
| 	data->tag.strdup_strings = 1; | ||||
| 	data->r_branch.strdup_strings = 1; | ||||
| 	data->generic.strdup_strings = 1; | ||||
| } | ||||
| 
 | ||||
| static struct string_list srcs = STRING_LIST_INIT_DUP; | ||||
| static struct string_list origins = STRING_LIST_INIT_DUP; | ||||
| 
 | ||||
| struct merge_parents { | ||||
| 	int alloc, nr; | ||||
| 	struct merge_parent { | ||||
| 		struct object_id given; | ||||
| 		struct object_id commit; | ||||
| 		unsigned char used; | ||||
| 	} *item; | ||||
| }; | ||||
| 
 | ||||
| /*
 | ||||
|  * I know, I know, this is inefficient, but you won't be pulling and merging | ||||
|  * hundreds of heads at a time anyway. | ||||
|  */ | ||||
| static struct merge_parent *find_merge_parent(struct merge_parents *table, | ||||
| 					      struct object_id *given, | ||||
| 					      struct object_id *commit) | ||||
| { | ||||
| 	int i; | ||||
| 	for (i = 0; i < table->nr; i++) { | ||||
| 		if (given && !oideq(&table->item[i].given, given)) | ||||
| 			continue; | ||||
| 		if (commit && !oideq(&table->item[i].commit, commit)) | ||||
| 			continue; | ||||
| 		return &table->item[i]; | ||||
| 	} | ||||
| 	return NULL; | ||||
| } | ||||
| 
 | ||||
| static void add_merge_parent(struct merge_parents *table, | ||||
| 			     struct object_id *given, | ||||
| 			     struct object_id *commit) | ||||
| { | ||||
| 	if (table->nr && find_merge_parent(table, given, commit)) | ||||
| 		return; | ||||
| 	ALLOC_GROW(table->item, table->nr + 1, table->alloc); | ||||
| 	oidcpy(&table->item[table->nr].given, given); | ||||
| 	oidcpy(&table->item[table->nr].commit, commit); | ||||
| 	table->item[table->nr].used = 0; | ||||
| 	table->nr++; | ||||
| } | ||||
| 
 | ||||
| static int handle_line(char *line, struct merge_parents *merge_parents) | ||||
| { | ||||
| 	int i, len = strlen(line); | ||||
| 	struct origin_data *origin_data; | ||||
| 	char *src; | ||||
| 	const char *origin; | ||||
| 	struct src_data *src_data; | ||||
| 	struct string_list_item *item; | ||||
| 	int pulling_head = 0; | ||||
| 	struct object_id oid; | ||||
| 	const unsigned hexsz = the_hash_algo->hexsz; | ||||
| 
 | ||||
| 	if (len < hexsz + 3 || line[hexsz] != '\t') | ||||
| 		return 1; | ||||
| 
 | ||||
| 	if (starts_with(line + hexsz + 1, "not-for-merge")) | ||||
| 		return 0; | ||||
| 
 | ||||
| 	if (line[hexsz + 1] != '\t') | ||||
| 		return 2; | ||||
| 
 | ||||
| 	i = get_oid_hex(line, &oid); | ||||
| 	if (i) | ||||
| 		return 3; | ||||
| 
 | ||||
| 	if (!find_merge_parent(merge_parents, &oid, NULL)) | ||||
| 		return 0; /* subsumed by other parents */ | ||||
| 
 | ||||
| 	origin_data = xcalloc(1, sizeof(struct origin_data)); | ||||
| 	oidcpy(&origin_data->oid, &oid); | ||||
| 
 | ||||
| 	if (line[len - 1] == '\n') | ||||
| 		line[len - 1] = 0; | ||||
| 	line += hexsz + 2; | ||||
| 
 | ||||
| 	/*
 | ||||
| 	 * At this point, line points at the beginning of comment e.g. | ||||
| 	 * "branch 'frotz' of git://that/repository.git". | ||||
| 	 * Find the repository name and point it with src. | ||||
| 	 */ | ||||
| 	src = strstr(line, " of "); | ||||
| 	if (src) { | ||||
| 		*src = 0; | ||||
| 		src += 4; | ||||
| 		pulling_head = 0; | ||||
| 	} else { | ||||
| 		src = line; | ||||
| 		pulling_head = 1; | ||||
| 	} | ||||
| 
 | ||||
| 	item = unsorted_string_list_lookup(&srcs, src); | ||||
| 	if (!item) { | ||||
| 		item = string_list_append(&srcs, src); | ||||
| 		item->util = xcalloc(1, sizeof(struct src_data)); | ||||
| 		init_src_data(item->util); | ||||
| 	} | ||||
| 	src_data = item->util; | ||||
| 
 | ||||
| 	if (pulling_head) { | ||||
| 		origin = src; | ||||
| 		src_data->head_status |= 1; | ||||
| 	} else if (starts_with(line, "branch ")) { | ||||
| 		origin_data->is_local_branch = 1; | ||||
| 		origin = line + 7; | ||||
| 		string_list_append(&src_data->branch, origin); | ||||
| 		src_data->head_status |= 2; | ||||
| 	} else if (starts_with(line, "tag ")) { | ||||
| 		origin = line; | ||||
| 		string_list_append(&src_data->tag, origin + 4); | ||||
| 		src_data->head_status |= 2; | ||||
| 	} else if (skip_prefix(line, "remote-tracking branch ", &origin)) { | ||||
| 		string_list_append(&src_data->r_branch, origin); | ||||
| 		src_data->head_status |= 2; | ||||
| 	} else { | ||||
| 		origin = src; | ||||
| 		string_list_append(&src_data->generic, line); | ||||
| 		src_data->head_status |= 2; | ||||
| 	} | ||||
| 
 | ||||
| 	if (!strcmp(".", src) || !strcmp(src, origin)) { | ||||
| 		int len = strlen(origin); | ||||
| 		if (origin[0] == '\'' && origin[len - 1] == '\'') | ||||
| 			origin = xmemdupz(origin + 1, len - 2); | ||||
| 	} else | ||||
| 		origin = xstrfmt("%s of %s", origin, src); | ||||
| 	if (strcmp(".", src)) | ||||
| 		origin_data->is_local_branch = 0; | ||||
| 	string_list_append(&origins, origin)->util = origin_data; | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static void print_joined(const char *singular, const char *plural, | ||||
| 		struct string_list *list, struct strbuf *out) | ||||
| { | ||||
| 	if (list->nr == 0) | ||||
| 		return; | ||||
| 	if (list->nr == 1) { | ||||
| 		strbuf_addf(out, "%s%s", singular, list->items[0].string); | ||||
| 	} else { | ||||
| 		int i; | ||||
| 		strbuf_addstr(out, plural); | ||||
| 		for (i = 0; i < list->nr - 1; i++) | ||||
| 			strbuf_addf(out, "%s%s", i > 0 ? ", " : "", | ||||
| 				    list->items[i].string); | ||||
| 		strbuf_addf(out, " and %s", list->items[list->nr - 1].string); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void add_branch_desc(struct strbuf *out, const char *name) | ||||
| { | ||||
| 	struct strbuf desc = STRBUF_INIT; | ||||
| 
 | ||||
| 	if (!read_branch_desc(&desc, name)) { | ||||
| 		const char *bp = desc.buf; | ||||
| 		while (*bp) { | ||||
| 			const char *ep = strchrnul(bp, '\n'); | ||||
| 			if (*ep) | ||||
| 				ep++; | ||||
| 			strbuf_addf(out, "  : %.*s", (int)(ep - bp), bp); | ||||
| 			bp = ep; | ||||
| 		} | ||||
| 		strbuf_complete_line(out); | ||||
| 	} | ||||
| 	strbuf_release(&desc); | ||||
| } | ||||
| 
 | ||||
| #define util_as_integral(elem) ((intptr_t)((elem)->util)) | ||||
| 
 | ||||
| static void record_person_from_buf(int which, struct string_list *people, | ||||
| 				   const char *buffer) | ||||
| { | ||||
| 	char *name_buf, *name, *name_end; | ||||
| 	struct string_list_item *elem; | ||||
| 	const char *field; | ||||
| 
 | ||||
| 	field = (which == 'a') ? "\nauthor " : "\ncommitter "; | ||||
| 	name = strstr(buffer, field); | ||||
| 	if (!name) | ||||
| 		return; | ||||
| 	name += strlen(field); | ||||
| 	name_end = strchrnul(name, '<'); | ||||
| 	if (*name_end) | ||||
| 		name_end--; | ||||
| 	while (isspace(*name_end) && name <= name_end) | ||||
| 		name_end--; | ||||
| 	if (name_end < name) | ||||
| 		return; | ||||
| 	name_buf = xmemdupz(name, name_end - name + 1); | ||||
| 
 | ||||
| 	elem = string_list_lookup(people, name_buf); | ||||
| 	if (!elem) { | ||||
| 		elem = string_list_insert(people, name_buf); | ||||
| 		elem->util = (void *)0; | ||||
| 	} | ||||
| 	elem->util = (void*)(util_as_integral(elem) + 1); | ||||
| 	free(name_buf); | ||||
| } | ||||
| 
 | ||||
| 
 | ||||
| static void record_person(int which, struct string_list *people, | ||||
| 			  struct commit *commit) | ||||
| { | ||||
| 	const char *buffer = get_commit_buffer(commit, NULL); | ||||
| 	record_person_from_buf(which, people, buffer); | ||||
| 	unuse_commit_buffer(commit, buffer); | ||||
| } | ||||
| 
 | ||||
| static int cmp_string_list_util_as_integral(const void *a_, const void *b_) | ||||
| { | ||||
| 	const struct string_list_item *a = a_, *b = b_; | ||||
| 	return util_as_integral(b) - util_as_integral(a); | ||||
| } | ||||
| 
 | ||||
| static void add_people_count(struct strbuf *out, struct string_list *people) | ||||
| { | ||||
| 	if (people->nr == 1) | ||||
| 		strbuf_addstr(out, people->items[0].string); | ||||
| 	else if (people->nr == 2) | ||||
| 		strbuf_addf(out, "%s (%d) and %s (%d)", | ||||
| 			    people->items[0].string, | ||||
| 			    (int)util_as_integral(&people->items[0]), | ||||
| 			    people->items[1].string, | ||||
| 			    (int)util_as_integral(&people->items[1])); | ||||
| 	else if (people->nr) | ||||
| 		strbuf_addf(out, "%s (%d) and others", | ||||
| 			    people->items[0].string, | ||||
| 			    (int)util_as_integral(&people->items[0])); | ||||
| } | ||||
| 
 | ||||
| static void credit_people(struct strbuf *out, | ||||
| 			  struct string_list *them, | ||||
| 			  int kind) | ||||
| { | ||||
| 	const char *label; | ||||
| 	const char *me; | ||||
| 
 | ||||
| 	if (kind == 'a') { | ||||
| 		label = "By"; | ||||
| 		me = git_author_info(IDENT_NO_DATE); | ||||
| 	} else { | ||||
| 		label = "Via"; | ||||
| 		me = git_committer_info(IDENT_NO_DATE); | ||||
| 	} | ||||
| 
 | ||||
| 	if (!them->nr || | ||||
| 	    (them->nr == 1 && | ||||
| 	     me && | ||||
| 	     skip_prefix(me, them->items->string, &me) && | ||||
| 	     starts_with(me, " <"))) | ||||
| 		return; | ||||
| 	strbuf_addf(out, "\n%c %s ", comment_line_char, label); | ||||
| 	add_people_count(out, them); | ||||
| } | ||||
| 
 | ||||
| static void add_people_info(struct strbuf *out, | ||||
| 			    struct string_list *authors, | ||||
| 			    struct string_list *committers) | ||||
| { | ||||
| 	QSORT(authors->items, authors->nr, | ||||
| 	      cmp_string_list_util_as_integral); | ||||
| 	QSORT(committers->items, committers->nr, | ||||
| 	      cmp_string_list_util_as_integral); | ||||
| 
 | ||||
| 	credit_people(out, authors, 'a'); | ||||
| 	credit_people(out, committers, 'c'); | ||||
| } | ||||
| 
 | ||||
| static void shortlog(const char *name, | ||||
| 		     struct origin_data *origin_data, | ||||
| 		     struct commit *head, | ||||
| 		     struct rev_info *rev, | ||||
| 		     struct fmt_merge_msg_opts *opts, | ||||
| 		     struct strbuf *out) | ||||
| { | ||||
| 	int i, count = 0; | ||||
| 	struct commit *commit; | ||||
| 	struct object *branch; | ||||
| 	struct string_list subjects = STRING_LIST_INIT_DUP; | ||||
| 	struct string_list authors = STRING_LIST_INIT_DUP; | ||||
| 	struct string_list committers = STRING_LIST_INIT_DUP; | ||||
| 	int flags = UNINTERESTING | TREESAME | SEEN | SHOWN | ADDED; | ||||
| 	struct strbuf sb = STRBUF_INIT; | ||||
| 	const struct object_id *oid = &origin_data->oid; | ||||
| 	int limit = opts->shortlog_len; | ||||
| 
 | ||||
| 	branch = deref_tag(the_repository, parse_object(the_repository, oid), | ||||
| 			   oid_to_hex(oid), | ||||
| 			   the_hash_algo->hexsz); | ||||
| 	if (!branch || branch->type != OBJ_COMMIT) | ||||
| 		return; | ||||
| 
 | ||||
| 	setup_revisions(0, NULL, rev, NULL); | ||||
| 	add_pending_object(rev, branch, name); | ||||
| 	add_pending_object(rev, &head->object, "^HEAD"); | ||||
| 	head->object.flags |= UNINTERESTING; | ||||
| 	if (prepare_revision_walk(rev)) | ||||
| 		die("revision walk setup failed"); | ||||
| 	while ((commit = get_revision(rev)) != NULL) { | ||||
| 		struct pretty_print_context ctx = {0}; | ||||
| 
 | ||||
| 		if (commit->parents && commit->parents->next) { | ||||
| 			/* do not list a merge but count committer */ | ||||
| 			if (opts->credit_people) | ||||
| 				record_person('c', &committers, commit); | ||||
| 			continue; | ||||
| 		} | ||||
| 		if (!count && opts->credit_people) | ||||
| 			/* the 'tip' committer */ | ||||
| 			record_person('c', &committers, commit); | ||||
| 		if (opts->credit_people) | ||||
| 			record_person('a', &authors, commit); | ||||
| 		count++; | ||||
| 		if (subjects.nr > limit) | ||||
| 			continue; | ||||
| 
 | ||||
| 		format_commit_message(commit, "%s", &sb, &ctx); | ||||
| 		strbuf_ltrim(&sb); | ||||
| 
 | ||||
| 		if (!sb.len) | ||||
| 			string_list_append(&subjects, | ||||
| 					   oid_to_hex(&commit->object.oid)); | ||||
| 		else | ||||
| 			string_list_append_nodup(&subjects, | ||||
| 						 strbuf_detach(&sb, NULL)); | ||||
| 	} | ||||
| 
 | ||||
| 	if (opts->credit_people) | ||||
| 		add_people_info(out, &authors, &committers); | ||||
| 	if (count > limit) | ||||
| 		strbuf_addf(out, "\n* %s: (%d commits)\n", name, count); | ||||
| 	else | ||||
| 		strbuf_addf(out, "\n* %s:\n", name); | ||||
| 
 | ||||
| 	if (origin_data->is_local_branch && use_branch_desc) | ||||
| 		add_branch_desc(out, name); | ||||
| 
 | ||||
| 	for (i = 0; i < subjects.nr; i++) | ||||
| 		if (i >= limit) | ||||
| 			strbuf_addstr(out, "  ...\n"); | ||||
| 		else | ||||
| 			strbuf_addf(out, "  %s\n", subjects.items[i].string); | ||||
| 
 | ||||
| 	clear_commit_marks((struct commit *)branch, flags); | ||||
| 	clear_commit_marks(head, flags); | ||||
| 	free_commit_list(rev->commits); | ||||
| 	rev->commits = NULL; | ||||
| 	rev->pending.nr = 0; | ||||
| 
 | ||||
| 	string_list_clear(&authors, 0); | ||||
| 	string_list_clear(&committers, 0); | ||||
| 	string_list_clear(&subjects, 0); | ||||
| } | ||||
| 
 | ||||
| static void fmt_merge_msg_title(struct strbuf *out, | ||||
| 				const char *current_branch) | ||||
| { | ||||
| 	int i = 0; | ||||
| 	char *sep = ""; | ||||
| 
 | ||||
| 	strbuf_addstr(out, "Merge "); | ||||
| 	for (i = 0; i < srcs.nr; i++) { | ||||
| 		struct src_data *src_data = srcs.items[i].util; | ||||
| 		const char *subsep = ""; | ||||
| 
 | ||||
| 		strbuf_addstr(out, sep); | ||||
| 		sep = "; "; | ||||
| 
 | ||||
| 		if (src_data->head_status == 1) { | ||||
| 			strbuf_addstr(out, srcs.items[i].string); | ||||
| 			continue; | ||||
| 		} | ||||
| 		if (src_data->head_status == 3) { | ||||
| 			subsep = ", "; | ||||
| 			strbuf_addstr(out, "HEAD"); | ||||
| 		} | ||||
| 		if (src_data->branch.nr) { | ||||
| 			strbuf_addstr(out, subsep); | ||||
| 			subsep = ", "; | ||||
| 			print_joined("branch ", "branches ", &src_data->branch, | ||||
| 					out); | ||||
| 		} | ||||
| 		if (src_data->r_branch.nr) { | ||||
| 			strbuf_addstr(out, subsep); | ||||
| 			subsep = ", "; | ||||
| 			print_joined("remote-tracking branch ", "remote-tracking branches ", | ||||
| 					&src_data->r_branch, out); | ||||
| 		} | ||||
| 		if (src_data->tag.nr) { | ||||
| 			strbuf_addstr(out, subsep); | ||||
| 			subsep = ", "; | ||||
| 			print_joined("tag ", "tags ", &src_data->tag, out); | ||||
| 		} | ||||
| 		if (src_data->generic.nr) { | ||||
| 			strbuf_addstr(out, subsep); | ||||
| 			print_joined("commit ", "commits ", &src_data->generic, | ||||
| 					out); | ||||
| 		} | ||||
| 		if (strcmp(".", srcs.items[i].string)) | ||||
| 			strbuf_addf(out, " of %s", srcs.items[i].string); | ||||
| 	} | ||||
| 
 | ||||
| 	if (!strcmp("master", current_branch)) | ||||
| 		strbuf_addch(out, '\n'); | ||||
| 	else | ||||
| 		strbuf_addf(out, " into %s\n", current_branch); | ||||
| } | ||||
| 
 | ||||
| static void fmt_tag_signature(struct strbuf *tagbuf, | ||||
| 			      struct strbuf *sig, | ||||
| 			      const char *buf, | ||||
| 			      unsigned long len) | ||||
| { | ||||
| 	const char *tag_body = strstr(buf, "\n\n"); | ||||
| 	if (tag_body) { | ||||
| 		tag_body += 2; | ||||
| 		strbuf_add(tagbuf, tag_body, buf + len - tag_body); | ||||
| 	} | ||||
| 	strbuf_complete_line(tagbuf); | ||||
| 	if (sig->len) { | ||||
| 		strbuf_addch(tagbuf, '\n'); | ||||
| 		strbuf_add_commented_lines(tagbuf, sig->buf, sig->len); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void fmt_merge_msg_sigs(struct strbuf *out) | ||||
| { | ||||
| 	int i, tag_number = 0, first_tag = 0; | ||||
| 	struct strbuf tagbuf = STRBUF_INIT; | ||||
| 
 | ||||
| 	for (i = 0; i < origins.nr; i++) { | ||||
| 		struct object_id *oid = origins.items[i].util; | ||||
| 		enum object_type type; | ||||
| 		unsigned long size, len; | ||||
| 		char *buf = read_object_file(oid, &type, &size); | ||||
| 		struct strbuf sig = STRBUF_INIT; | ||||
| 
 | ||||
| 		if (!buf || type != OBJ_TAG) | ||||
| 			goto next; | ||||
| 		len = parse_signature(buf, size); | ||||
| 
 | ||||
| 		if (size == len) | ||||
| 			; /* merely annotated */ | ||||
| 		else if (verify_signed_buffer(buf, len, buf + len, size - len, &sig, NULL)) { | ||||
| 			if (!sig.len) | ||||
| 				strbuf_addstr(&sig, "gpg verification failed.\n"); | ||||
| 		} | ||||
| 
 | ||||
| 		if (!tag_number++) { | ||||
| 			fmt_tag_signature(&tagbuf, &sig, buf, len); | ||||
| 			first_tag = i; | ||||
| 		} else { | ||||
| 			if (tag_number == 2) { | ||||
| 				struct strbuf tagline = STRBUF_INIT; | ||||
| 				strbuf_addch(&tagline, '\n'); | ||||
| 				strbuf_add_commented_lines(&tagline, | ||||
| 						origins.items[first_tag].string, | ||||
| 						strlen(origins.items[first_tag].string)); | ||||
| 				strbuf_insert(&tagbuf, 0, tagline.buf, | ||||
| 					      tagline.len); | ||||
| 				strbuf_release(&tagline); | ||||
| 			} | ||||
| 			strbuf_addch(&tagbuf, '\n'); | ||||
| 			strbuf_add_commented_lines(&tagbuf, | ||||
| 					origins.items[i].string, | ||||
| 					strlen(origins.items[i].string)); | ||||
| 			fmt_tag_signature(&tagbuf, &sig, buf, len); | ||||
| 		} | ||||
| 		strbuf_release(&sig); | ||||
| 	next: | ||||
| 		free(buf); | ||||
| 	} | ||||
| 	if (tagbuf.len) { | ||||
| 		strbuf_addch(out, '\n'); | ||||
| 		strbuf_addbuf(out, &tagbuf); | ||||
| 	} | ||||
| 	strbuf_release(&tagbuf); | ||||
| } | ||||
| 
 | ||||
| static void find_merge_parents(struct merge_parents *result, | ||||
| 			       struct strbuf *in, struct object_id *head) | ||||
| { | ||||
| 	struct commit_list *parents; | ||||
| 	struct commit *head_commit; | ||||
| 	int pos = 0, i, j; | ||||
| 
 | ||||
| 	parents = NULL; | ||||
| 	while (pos < in->len) { | ||||
| 		int len; | ||||
| 		char *p = in->buf + pos; | ||||
| 		char *newline = strchr(p, '\n'); | ||||
| 		const char *q; | ||||
| 		struct object_id oid; | ||||
| 		struct commit *parent; | ||||
| 		struct object *obj; | ||||
| 
 | ||||
| 		len = newline ? newline - p : strlen(p); | ||||
| 		pos += len + !!newline; | ||||
| 
 | ||||
| 		if (parse_oid_hex(p, &oid, &q) || | ||||
| 		    q[0] != '\t' || | ||||
| 		    q[1] != '\t') | ||||
| 			continue; /* skip not-for-merge */ | ||||
| 		/*
 | ||||
| 		 * Do not use get_merge_parent() here; we do not have | ||||
| 		 * "name" here and we do not want to contaminate its | ||||
| 		 * util field yet. | ||||
| 		 */ | ||||
| 		obj = parse_object(the_repository, &oid); | ||||
| 		parent = (struct commit *)peel_to_type(NULL, 0, obj, OBJ_COMMIT); | ||||
| 		if (!parent) | ||||
| 			continue; | ||||
| 		commit_list_insert(parent, &parents); | ||||
| 		add_merge_parent(result, &obj->oid, &parent->object.oid); | ||||
| 	} | ||||
| 	head_commit = lookup_commit(the_repository, head); | ||||
| 	if (head_commit) | ||||
| 		commit_list_insert(head_commit, &parents); | ||||
| 	reduce_heads_replace(&parents); | ||||
| 
 | ||||
| 	while (parents) { | ||||
| 		struct commit *cmit = pop_commit(&parents); | ||||
| 		for (i = 0; i < result->nr; i++) | ||||
| 			if (oideq(&result->item[i].commit, &cmit->object.oid)) | ||||
| 				result->item[i].used = 1; | ||||
| 	} | ||||
| 
 | ||||
| 	for (i = j = 0; i < result->nr; i++) { | ||||
| 		if (result->item[i].used) { | ||||
| 			if (i != j) | ||||
| 				result->item[j] = result->item[i]; | ||||
| 			j++; | ||||
| 		} | ||||
| 	} | ||||
| 	result->nr = j; | ||||
| } | ||||
| 
 | ||||
| int fmt_merge_msg(struct strbuf *in, struct strbuf *out, | ||||
| 		  struct fmt_merge_msg_opts *opts) | ||||
| { | ||||
| 	int i = 0, pos = 0; | ||||
| 	struct object_id head_oid; | ||||
| 	const char *current_branch; | ||||
| 	void *current_branch_to_free; | ||||
| 	struct merge_parents merge_parents; | ||||
| 
 | ||||
| 	memset(&merge_parents, 0, sizeof(merge_parents)); | ||||
| 
 | ||||
| 	/* get current branch */ | ||||
| 	current_branch = current_branch_to_free = | ||||
| 		resolve_refdup("HEAD", RESOLVE_REF_READING, &head_oid, NULL); | ||||
| 	if (!current_branch) | ||||
| 		die("No current branch"); | ||||
| 	if (starts_with(current_branch, "refs/heads/")) | ||||
| 		current_branch += 11; | ||||
| 
 | ||||
| 	find_merge_parents(&merge_parents, in, &head_oid); | ||||
| 
 | ||||
| 	/* get a line */ | ||||
| 	while (pos < in->len) { | ||||
| 		int len; | ||||
| 		char *newline, *p = in->buf + pos; | ||||
| 
 | ||||
| 		newline = strchr(p, '\n'); | ||||
| 		len = newline ? newline - p : strlen(p); | ||||
| 		pos += len + !!newline; | ||||
| 		i++; | ||||
| 		p[len] = 0; | ||||
| 		if (handle_line(p, &merge_parents)) | ||||
| 			die("error in line %d: %.*s", i, len, p); | ||||
| 	} | ||||
| 
 | ||||
| 	if (opts->add_title && srcs.nr) | ||||
| 		fmt_merge_msg_title(out, current_branch); | ||||
| 
 | ||||
| 	if (origins.nr) | ||||
| 		fmt_merge_msg_sigs(out); | ||||
| 
 | ||||
| 	if (opts->shortlog_len) { | ||||
| 		struct commit *head; | ||||
| 		struct rev_info rev; | ||||
| 
 | ||||
| 		head = lookup_commit_or_die(&head_oid, "HEAD"); | ||||
| 		repo_init_revisions(the_repository, &rev, NULL); | ||||
| 		rev.commit_format = CMIT_FMT_ONELINE; | ||||
| 		rev.ignore_merges = 1; | ||||
| 		rev.limited = 1; | ||||
| 
 | ||||
| 		strbuf_complete_line(out); | ||||
| 
 | ||||
| 		for (i = 0; i < origins.nr; i++) | ||||
| 			shortlog(origins.items[i].string, | ||||
| 				 origins.items[i].util, | ||||
| 				 head, &rev, opts, out); | ||||
| 	} | ||||
| 
 | ||||
| 	strbuf_complete_line(out); | ||||
| 	free(current_branch_to_free); | ||||
| 	free(merge_parents.item); | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| int cmd_fmt_merge_msg(int argc, const char **argv, const char *prefix) | ||||
| { | ||||
| 	const char *inpath = NULL; | ||||
| 	const char *message = NULL; | ||||
| 	int shortlog_len = -1; | ||||
| 	struct option options[] = { | ||||
| 		{ OPTION_INTEGER, 0, "log", &shortlog_len, N_("n"), | ||||
| 		  N_("populate log with at most <n> entries from shortlog"), | ||||
| 		  PARSE_OPT_OPTARG, NULL, DEFAULT_MERGE_LOG_LEN }, | ||||
| 		{ OPTION_INTEGER, 0, "summary", &shortlog_len, N_("n"), | ||||
| 		  N_("alias for --log (deprecated)"), | ||||
| 		  PARSE_OPT_OPTARG | PARSE_OPT_HIDDEN, NULL, | ||||
| 		  DEFAULT_MERGE_LOG_LEN }, | ||||
| 		OPT_STRING('m', "message", &message, N_("text"), | ||||
| 			N_("use <text> as start of message")), | ||||
| 		OPT_FILENAME('F', "file", &inpath, N_("file to read from")), | ||||
| 		OPT_END() | ||||
| 	}; | ||||
| 
 | ||||
| 	FILE *in = stdin; | ||||
| 	struct strbuf input = STRBUF_INIT, output = STRBUF_INIT; | ||||
| 	int ret; | ||||
| 	struct fmt_merge_msg_opts opts; | ||||
| 
 | ||||
| 	git_config(fmt_merge_msg_config, NULL); | ||||
| 	argc = parse_options(argc, argv, prefix, options, fmt_merge_msg_usage, | ||||
| 			     0); | ||||
| 	if (argc > 0) | ||||
| 		usage_with_options(fmt_merge_msg_usage, options); | ||||
| 	if (shortlog_len < 0) | ||||
| 		shortlog_len = (merge_log_config > 0) ? merge_log_config : 0; | ||||
| 
 | ||||
| 	if (inpath && strcmp(inpath, "-")) { | ||||
| 		in = fopen(inpath, "r"); | ||||
| 		if (!in) | ||||
| 			die_errno("cannot open '%s'", inpath); | ||||
| 	} | ||||
| 
 | ||||
| 	if (strbuf_read(&input, fileno(in), 0) < 0) | ||||
| 		die_errno("could not read input file"); | ||||
| 
 | ||||
| 	if (message) | ||||
| 		strbuf_addstr(&output, message); | ||||
| 
 | ||||
| 	memset(&opts, 0, sizeof(opts)); | ||||
| 	opts.add_title = !message; | ||||
| 	opts.credit_people = 1; | ||||
| 	opts.shortlog_len = shortlog_len; | ||||
| 
 | ||||
| 	ret = fmt_merge_msg(&input, &output, &opts); | ||||
| 	if (ret) | ||||
| 		return ret; | ||||
| 	write_in_full(STDOUT_FILENO, output.buf, output.len); | ||||
| 	return 0; | ||||
| } | ||||
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