| #include "builtin.h" |
| #include "cache.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" |
| |
| 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 { |
| unsigned char sha1[20]; |
| 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 { |
| unsigned char given[20]; |
| unsigned char commit[20]; |
| 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, |
| unsigned char *given, |
| unsigned char *commit) |
| { |
| int i; |
| for (i = 0; i < table->nr; i++) { |
| if (given && hashcmp(table->item[i].given, given)) |
| continue; |
| if (commit && hashcmp(table->item[i].commit, commit)) |
| continue; |
| return &table->item[i]; |
| } |
| return NULL; |
| } |
| |
| static void add_merge_parent(struct merge_parents *table, |
| unsigned char *given, |
| unsigned char *commit) |
| { |
| if (table->nr && find_merge_parent(table, given, commit)) |
| return; |
| ALLOC_GROW(table->item, table->nr + 1, table->alloc); |
| hashcpy(table->item[table->nr].given, given); |
| hashcpy(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, *origin; |
| struct src_data *src_data; |
| struct string_list_item *item; |
| int pulling_head = 0; |
| unsigned char sha1[20]; |
| |
| if (len < 43 || line[40] != '\t') |
| return 1; |
| |
| if (starts_with(line + 41, "not-for-merge")) |
| return 0; |
| |
| if (line[41] != '\t') |
| return 2; |
| |
| i = get_sha1_hex(line, sha1); |
| if (i) |
| return 3; |
| |
| if (!find_merge_parent(merge_parents, sha1, NULL)) |
| return 0; /* subsumed by other parents */ |
| |
| origin_data = xcalloc(1, sizeof(struct origin_data)); |
| hashcpy(origin_data->sha1, sha1); |
| |
| if (line[len - 1] == '\n') |
| line[len - 1] = 0; |
| line += 42; |
| |
| /* |
| * 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 (starts_with(line, "remote-tracking branch ")) { |
| origin = line + strlen("remote-tracking branch "); |
| 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 { |
| char *new_origin = xmalloc(strlen(origin) + strlen(src) + 5); |
| sprintf(new_origin, "%s of %s", origin, src); |
| origin = new_origin; |
| } |
| 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; |
| } |
| if (out->buf[out->len - 1] != '\n') |
| strbuf_addch(out, '\n'); |
| } |
| strbuf_release(&desc); |
| } |
| |
| #define util_as_integral(elem) ((intptr_t)((elem)->util)) |
| |
| static void record_person(int which, struct string_list *people, |
| struct commit *commit) |
| { |
| char *name_buf, *name, *name_end; |
| struct string_list_item *elem; |
| const char *field; |
| |
| field = (which == 'a') ? "\nauthor " : "\ncommitter "; |
| name = strstr(commit->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 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_addf(out, "%s", 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 && |
| (me = skip_prefix(me, them->items->string)) != NULL && |
| skip_prefix(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) |
| { |
| if (authors->nr) |
| qsort(authors->items, |
| authors->nr, sizeof(authors->items[0]), |
| cmp_string_list_util_as_integral); |
| if (committers->nr) |
| qsort(committers->items, |
| committers->nr, sizeof(committers->items[0]), |
| 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 unsigned char *sha1 = origin_data->sha1; |
| int limit = opts->shortlog_len; |
| |
| branch = deref_tag(parse_object(sha1), sha1_to_hex(sha1), 40); |
| 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, |
| sha1_to_hex(commit->object.sha1)); |
| else |
| string_list_append(&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_addf(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++) { |
| unsigned char *sha1 = origins.items[i].util; |
| enum object_type type; |
| unsigned long size, len; |
| char *buf = read_sha1_file(sha1, &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, unsigned char *head) |
| { |
| struct commit_list *parents, *next; |
| 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'); |
| unsigned char sha1[20]; |
| struct commit *parent; |
| struct object *obj; |
| |
| len = newline ? newline - p : strlen(p); |
| pos += len + !!newline; |
| |
| if (len < 43 || |
| get_sha1_hex(p, sha1) || |
| p[40] != '\t' || |
| p[41] != '\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(sha1); |
| parent = (struct commit *)peel_to_type(NULL, 0, obj, OBJ_COMMIT); |
| if (!parent) |
| continue; |
| commit_list_insert(parent, &parents); |
| add_merge_parent(result, obj->sha1, parent->object.sha1); |
| } |
| head_commit = lookup_commit(head); |
| if (head_commit) |
| commit_list_insert(head_commit, &parents); |
| parents = reduce_heads(parents); |
| |
| while (parents) { |
| for (i = 0; i < result->nr; i++) |
| if (!hashcmp(result->item[i].commit, |
| parents->item->object.sha1)) |
| result->item[i].used = 1; |
| next = parents->next; |
| free(parents); |
| parents = next; |
| } |
| |
| 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; |
| unsigned char head_sha1[20]; |
| 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", head_sha1, 1, 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_sha1); |
| |
| /* 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_sha1, "HEAD"); |
| init_revisions(&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; |
| } |