Merge commit 'git/master'
[git/git-bigfiles.git] / builtin-log.c
blobc7a57725948553a955f49ab891aed3fbdd3aa33d
1 /*
2 * Builtin "git log" and related commands (show, whatchanged)
4 * (C) Copyright 2006 Linus Torvalds
5 * 2006 Junio Hamano
6 */
7 #include "cache.h"
8 #include "color.h"
9 #include "commit.h"
10 #include "diff.h"
11 #include "revision.h"
12 #include "log-tree.h"
13 #include "builtin.h"
14 #include "tag.h"
15 #include "reflog-walk.h"
16 #include "patch-ids.h"
17 #include "run-command.h"
18 #include "shortlog.h"
19 #include "remote.h"
20 #include "string-list.h"
22 /* Set a default date-time format for git log ("log.date" config variable) */
23 static const char *default_date_mode = NULL;
25 static int default_show_root = 1;
26 static const char *fmt_patch_subject_prefix = "PATCH";
27 static const char *fmt_pretty;
29 static void cmd_log_init(int argc, const char **argv, const char *prefix,
30 struct rev_info *rev)
32 int i;
34 rev->abbrev = DEFAULT_ABBREV;
35 rev->commit_format = CMIT_FMT_DEFAULT;
36 if (fmt_pretty)
37 get_commit_format(fmt_pretty, rev);
38 rev->verbose_header = 1;
39 DIFF_OPT_SET(&rev->diffopt, RECURSIVE);
40 rev->show_root_diff = default_show_root;
41 rev->subject_prefix = fmt_patch_subject_prefix;
42 DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
44 if (default_date_mode)
45 rev->date_mode = parse_date_format(default_date_mode);
47 argc = setup_revisions(argc, argv, rev, "HEAD");
49 if (rev->diffopt.pickaxe || rev->diffopt.filter)
50 rev->always_show_header = 0;
51 if (DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES)) {
52 rev->always_show_header = 0;
53 if (rev->diffopt.nr_paths != 1)
54 usage("git logs can only follow renames on one pathname at a time");
56 for (i = 1; i < argc; i++) {
57 const char *arg = argv[i];
58 if (!strcmp(arg, "--decorate")) {
59 load_ref_decorations();
60 rev->show_decorations = 1;
61 } else if (!strcmp(arg, "--source")) {
62 rev->show_source = 1;
63 } else
64 die("unrecognized argument: %s", arg);
69 * This gives a rough estimate for how many commits we
70 * will print out in the list.
72 static int estimate_commit_count(struct rev_info *rev, struct commit_list *list)
74 int n = 0;
76 while (list) {
77 struct commit *commit = list->item;
78 unsigned int flags = commit->object.flags;
79 list = list->next;
80 if (!(flags & (TREESAME | UNINTERESTING)))
81 n++;
83 return n;
86 static void show_early_header(struct rev_info *rev, const char *stage, int nr)
88 if (rev->shown_one) {
89 rev->shown_one = 0;
90 if (rev->commit_format != CMIT_FMT_ONELINE)
91 putchar(rev->diffopt.line_termination);
93 printf("Final output: %d %s\n", nr, stage);
96 struct itimerval early_output_timer;
98 static void log_show_early(struct rev_info *revs, struct commit_list *list)
100 int i = revs->early_output;
101 int show_header = 1;
103 sort_in_topological_order(&list, revs->lifo);
104 while (list && i) {
105 struct commit *commit = list->item;
106 switch (simplify_commit(revs, commit)) {
107 case commit_show:
108 if (show_header) {
109 int n = estimate_commit_count(revs, list);
110 show_early_header(revs, "incomplete", n);
111 show_header = 0;
113 log_tree_commit(revs, commit);
114 i--;
115 break;
116 case commit_ignore:
117 break;
118 case commit_error:
119 return;
121 list = list->next;
124 /* Did we already get enough commits for the early output? */
125 if (!i)
126 return;
129 * ..if no, then repeat it twice a second until we
130 * do.
132 * NOTE! We don't use "it_interval", because if the
133 * reader isn't listening, we want our output to be
134 * throttled by the writing, and not have the timer
135 * trigger every second even if we're blocked on a
136 * reader!
138 early_output_timer.it_value.tv_sec = 0;
139 early_output_timer.it_value.tv_usec = 500000;
140 setitimer(ITIMER_REAL, &early_output_timer, NULL);
143 static void early_output(int signal)
145 show_early_output = log_show_early;
148 static void setup_early_output(struct rev_info *rev)
150 struct sigaction sa;
153 * Set up the signal handler, minimally intrusively:
154 * we only set a single volatile integer word (not
155 * using sigatomic_t - trying to avoid unnecessary
156 * system dependencies and headers), and using
157 * SA_RESTART.
159 memset(&sa, 0, sizeof(sa));
160 sa.sa_handler = early_output;
161 sigemptyset(&sa.sa_mask);
162 sa.sa_flags = SA_RESTART;
163 sigaction(SIGALRM, &sa, NULL);
166 * If we can get the whole output in less than a
167 * tenth of a second, don't even bother doing the
168 * early-output thing..
170 * This is a one-time-only trigger.
172 early_output_timer.it_value.tv_sec = 0;
173 early_output_timer.it_value.tv_usec = 100000;
174 setitimer(ITIMER_REAL, &early_output_timer, NULL);
177 static void finish_early_output(struct rev_info *rev)
179 int n = estimate_commit_count(rev, rev->commits);
180 signal(SIGALRM, SIG_IGN);
181 show_early_header(rev, "done", n);
184 static int cmd_log_walk(struct rev_info *rev)
186 struct commit *commit;
188 if (rev->early_output)
189 setup_early_output(rev);
191 if (prepare_revision_walk(rev))
192 die("revision walk setup failed");
194 if (rev->early_output)
195 finish_early_output(rev);
198 * For --check and --exit-code, the exit code is based on CHECK_FAILED
199 * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to
200 * retain that state information if replacing rev->diffopt in this loop
202 while ((commit = get_revision(rev)) != NULL) {
203 log_tree_commit(rev, commit);
204 if (!rev->reflog_info) {
205 /* we allow cycles in reflog ancestry */
206 free(commit->buffer);
207 commit->buffer = NULL;
209 free_commit_list(commit->parents);
210 commit->parents = NULL;
212 if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
213 DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
214 return 02;
216 return diff_result_code(&rev->diffopt, 0);
219 static int git_log_config(const char *var, const char *value, void *cb)
221 if (!strcmp(var, "format.pretty"))
222 return git_config_string(&fmt_pretty, var, value);
223 if (!strcmp(var, "format.subjectprefix"))
224 return git_config_string(&fmt_patch_subject_prefix, var, value);
225 if (!strcmp(var, "log.date"))
226 return git_config_string(&default_date_mode, var, value);
227 if (!strcmp(var, "log.showroot")) {
228 default_show_root = git_config_bool(var, value);
229 return 0;
231 return git_diff_ui_config(var, value, cb);
234 int cmd_whatchanged(int argc, const char **argv, const char *prefix)
236 struct rev_info rev;
238 git_config(git_log_config, NULL);
240 if (diff_use_color_default == -1)
241 diff_use_color_default = git_use_color_default;
243 init_revisions(&rev, prefix);
244 rev.diff = 1;
245 rev.simplify_history = 0;
246 cmd_log_init(argc, argv, prefix, &rev);
247 if (!rev.diffopt.output_format)
248 rev.diffopt.output_format = DIFF_FORMAT_RAW;
249 return cmd_log_walk(&rev);
252 static void show_tagger(char *buf, int len, struct rev_info *rev)
254 struct strbuf out = STRBUF_INIT;
256 pp_user_info("Tagger", rev->commit_format, &out, buf, rev->date_mode,
257 git_log_output_encoding ?
258 git_log_output_encoding: git_commit_encoding);
259 printf("%s\n", out.buf);
260 strbuf_release(&out);
263 static int show_object(const unsigned char *sha1, int show_tag_object,
264 struct rev_info *rev)
266 unsigned long size;
267 enum object_type type;
268 char *buf = read_sha1_file(sha1, &type, &size);
269 int offset = 0;
271 if (!buf)
272 return error("Could not read object %s", sha1_to_hex(sha1));
274 if (show_tag_object)
275 while (offset < size && buf[offset] != '\n') {
276 int new_offset = offset + 1;
277 while (new_offset < size && buf[new_offset++] != '\n')
278 ; /* do nothing */
279 if (!prefixcmp(buf + offset, "tagger "))
280 show_tagger(buf + offset + 7,
281 new_offset - offset - 7, rev);
282 offset = new_offset;
285 if (offset < size)
286 fwrite(buf + offset, size - offset, 1, stdout);
287 free(buf);
288 return 0;
291 static int show_tree_object(const unsigned char *sha1,
292 const char *base, int baselen,
293 const char *pathname, unsigned mode, int stage, void *context)
295 printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
296 return 0;
299 int cmd_show(int argc, const char **argv, const char *prefix)
301 struct rev_info rev;
302 struct object_array_entry *objects;
303 int i, count, ret = 0;
305 git_config(git_log_config, NULL);
307 if (diff_use_color_default == -1)
308 diff_use_color_default = git_use_color_default;
310 init_revisions(&rev, prefix);
311 rev.diff = 1;
312 rev.combine_merges = 1;
313 rev.dense_combined_merges = 1;
314 rev.always_show_header = 1;
315 rev.ignore_merges = 0;
316 rev.no_walk = 1;
317 cmd_log_init(argc, argv, prefix, &rev);
319 count = rev.pending.nr;
320 objects = rev.pending.objects;
321 for (i = 0; i < count && !ret; i++) {
322 struct object *o = objects[i].item;
323 const char *name = objects[i].name;
324 switch (o->type) {
325 case OBJ_BLOB:
326 ret = show_object(o->sha1, 0, NULL);
327 break;
328 case OBJ_TAG: {
329 struct tag *t = (struct tag *)o;
331 printf("%stag %s%s\n",
332 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
333 t->tag,
334 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
335 ret = show_object(o->sha1, 1, &rev);
336 if (ret)
337 break;
338 o = parse_object(t->tagged->sha1);
339 if (!o)
340 ret = error("Could not read object %s",
341 sha1_to_hex(t->tagged->sha1));
342 objects[i].item = o;
343 i--;
344 break;
346 case OBJ_TREE:
347 printf("%stree %s%s\n\n",
348 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
349 name,
350 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
351 read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
352 show_tree_object, NULL);
353 break;
354 case OBJ_COMMIT:
355 rev.pending.nr = rev.pending.alloc = 0;
356 rev.pending.objects = NULL;
357 add_object_array(o, name, &rev.pending);
358 ret = cmd_log_walk(&rev);
359 break;
360 default:
361 ret = error("Unknown type: %d", o->type);
364 free(objects);
365 return ret;
369 * This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
371 int cmd_log_reflog(int argc, const char **argv, const char *prefix)
373 struct rev_info rev;
375 git_config(git_log_config, NULL);
377 if (diff_use_color_default == -1)
378 diff_use_color_default = git_use_color_default;
380 init_revisions(&rev, prefix);
381 init_reflog_walk(&rev.reflog_info);
382 rev.abbrev_commit = 1;
383 rev.verbose_header = 1;
384 cmd_log_init(argc, argv, prefix, &rev);
387 * This means that we override whatever commit format the user gave
388 * on the cmd line. Sad, but cmd_log_init() currently doesn't
389 * allow us to set a different default.
391 rev.commit_format = CMIT_FMT_ONELINE;
392 rev.use_terminator = 1;
393 rev.always_show_header = 1;
396 * We get called through "git reflog", so unlike the other log
397 * routines, we need to set up our pager manually..
399 setup_pager();
401 return cmd_log_walk(&rev);
404 int cmd_log(int argc, const char **argv, const char *prefix)
406 struct rev_info rev;
408 git_config(git_log_config, NULL);
410 if (diff_use_color_default == -1)
411 diff_use_color_default = git_use_color_default;
413 init_revisions(&rev, prefix);
414 rev.always_show_header = 1;
415 cmd_log_init(argc, argv, prefix, &rev);
416 return cmd_log_walk(&rev);
419 /* format-patch */
420 #define FORMAT_PATCH_NAME_MAX 64
422 static int istitlechar(char c)
424 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
425 (c >= '0' && c <= '9') || c == '.' || c == '_';
428 static const char *fmt_patch_suffix = ".patch";
429 static int numbered = 0;
430 static int auto_number = 1;
432 static char *default_attach = NULL;
434 static char **extra_hdr;
435 static int extra_hdr_nr;
436 static int extra_hdr_alloc;
438 static char **extra_to;
439 static int extra_to_nr;
440 static int extra_to_alloc;
442 static char **extra_cc;
443 static int extra_cc_nr;
444 static int extra_cc_alloc;
446 static void add_header(const char *value)
448 int len = strlen(value);
449 while (len && value[len - 1] == '\n')
450 len--;
451 if (!strncasecmp(value, "to: ", 4)) {
452 ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
453 extra_to[extra_to_nr++] = xstrndup(value + 4, len - 4);
454 return;
456 if (!strncasecmp(value, "cc: ", 4)) {
457 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
458 extra_cc[extra_cc_nr++] = xstrndup(value + 4, len - 4);
459 return;
461 ALLOC_GROW(extra_hdr, extra_hdr_nr + 1, extra_hdr_alloc);
462 extra_hdr[extra_hdr_nr++] = xstrndup(value, len);
465 #define THREAD_SHALLOW 1
466 #define THREAD_DEEP 2
467 static int thread = 0;
469 static int git_format_config(const char *var, const char *value, void *cb)
471 if (!strcmp(var, "format.headers")) {
472 if (!value)
473 die("format.headers without value");
474 add_header(value);
475 return 0;
477 if (!strcmp(var, "format.suffix"))
478 return git_config_string(&fmt_patch_suffix, var, value);
479 if (!strcmp(var, "format.cc")) {
480 if (!value)
481 return config_error_nonbool(var);
482 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
483 extra_cc[extra_cc_nr++] = xstrdup(value);
484 return 0;
486 if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
487 return 0;
489 if (!strcmp(var, "format.numbered")) {
490 if (value && !strcasecmp(value, "auto")) {
491 auto_number = 1;
492 return 0;
494 numbered = git_config_bool(var, value);
495 auto_number = auto_number && numbered;
496 return 0;
498 if (!strcmp(var, "format.attach")) {
499 if (value && *value)
500 default_attach = xstrdup(value);
501 else
502 default_attach = xstrdup(git_version_string);
503 return 0;
505 if (!strcmp(var, "format.thread")) {
506 if (value && !strcasecmp(value, "deep")) {
507 thread = THREAD_DEEP;
508 return 0;
510 if (value && !strcasecmp(value, "shallow")) {
511 thread = THREAD_SHALLOW;
512 return 0;
514 thread = git_config_bool(var, value) && THREAD_SHALLOW;
515 return 0;
518 return git_log_config(var, value, cb);
522 static const char *get_oneline_for_filename(struct commit *commit,
523 int keep_subject)
525 static char filename[PATH_MAX];
526 char *sol;
527 int len = 0;
528 int suffix_len = strlen(fmt_patch_suffix) + 1;
530 sol = strstr(commit->buffer, "\n\n");
531 if (!sol)
532 filename[0] = '\0';
533 else {
534 int j, space = 0;
536 sol += 2;
537 /* strip [PATCH] or [PATCH blabla] */
538 if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
539 char *eos = strchr(sol + 6, ']');
540 if (eos) {
541 while (isspace(*eos))
542 eos++;
543 sol = eos;
547 for (j = 0;
548 j < FORMAT_PATCH_NAME_MAX - suffix_len - 5 &&
549 len < sizeof(filename) - suffix_len &&
550 sol[j] && sol[j] != '\n';
551 j++) {
552 if (istitlechar(sol[j])) {
553 if (space) {
554 filename[len++] = '-';
555 space = 0;
557 filename[len++] = sol[j];
558 if (sol[j] == '.')
559 while (sol[j + 1] == '.')
560 j++;
561 } else
562 space = 1;
564 while (filename[len - 1] == '.'
565 || filename[len - 1] == '-')
566 len--;
567 filename[len] = '\0';
569 return filename;
572 static FILE *realstdout = NULL;
573 static const char *output_directory = NULL;
574 static int outdir_offset;
576 static int reopen_stdout(const char *oneline, int nr, struct rev_info *rev)
578 char filename[PATH_MAX];
579 int len = 0;
580 int suffix_len = strlen(fmt_patch_suffix) + 1;
582 if (output_directory) {
583 len = snprintf(filename, sizeof(filename), "%s",
584 output_directory);
585 if (len >=
586 sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
587 return error("name of output directory is too long");
588 if (filename[len - 1] != '/')
589 filename[len++] = '/';
592 if (!oneline)
593 len += sprintf(filename + len, "%d", nr);
594 else {
595 len += sprintf(filename + len, "%04d-", nr);
596 len += snprintf(filename + len, sizeof(filename) - len - 1
597 - suffix_len, "%s", oneline);
598 strcpy(filename + len, fmt_patch_suffix);
601 if (!DIFF_OPT_TST(&rev->diffopt, QUIET))
602 fprintf(realstdout, "%s\n", filename + outdir_offset);
604 if (freopen(filename, "w", stdout) == NULL)
605 return error("Cannot open patch file %s",filename);
607 return 0;
610 static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids, const char *prefix)
612 struct rev_info check_rev;
613 struct commit *commit;
614 struct object *o1, *o2;
615 unsigned flags1, flags2;
617 if (rev->pending.nr != 2)
618 die("Need exactly one range.");
620 o1 = rev->pending.objects[0].item;
621 flags1 = o1->flags;
622 o2 = rev->pending.objects[1].item;
623 flags2 = o2->flags;
625 if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
626 die("Not a range.");
628 init_patch_ids(ids);
630 /* given a range a..b get all patch ids for b..a */
631 init_revisions(&check_rev, prefix);
632 o1->flags ^= UNINTERESTING;
633 o2->flags ^= UNINTERESTING;
634 add_pending_object(&check_rev, o1, "o1");
635 add_pending_object(&check_rev, o2, "o2");
636 if (prepare_revision_walk(&check_rev))
637 die("revision walk setup failed");
639 while ((commit = get_revision(&check_rev)) != NULL) {
640 /* ignore merges */
641 if (commit->parents && commit->parents->next)
642 continue;
644 add_commit_patch_id(commit, ids);
647 /* reset for next revision walk */
648 clear_commit_marks((struct commit *)o1,
649 SEEN | UNINTERESTING | SHOWN | ADDED);
650 clear_commit_marks((struct commit *)o2,
651 SEEN | UNINTERESTING | SHOWN | ADDED);
652 o1->flags = flags1;
653 o2->flags = flags2;
656 static void gen_message_id(struct rev_info *info, char *base)
658 const char *committer = git_committer_info(IDENT_WARN_ON_NO_NAME);
659 const char *email_start = strrchr(committer, '<');
660 const char *email_end = strrchr(committer, '>');
661 struct strbuf buf = STRBUF_INIT;
662 if (!email_start || !email_end || email_start > email_end - 1)
663 die("Could not extract email from committer identity.");
664 strbuf_addf(&buf, "%s.%lu.git.%.*s", base,
665 (unsigned long) time(NULL),
666 (int)(email_end - email_start - 1), email_start + 1);
667 info->message_id = strbuf_detach(&buf, NULL);
670 static void make_cover_letter(struct rev_info *rev, int use_stdout,
671 int numbered, int numbered_files,
672 struct commit *origin,
673 int nr, struct commit **list, struct commit *head)
675 const char *committer;
676 char *head_sha1;
677 const char *subject_start = NULL;
678 const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
679 const char *msg;
680 const char *extra_headers = rev->extra_headers;
681 struct shortlog log;
682 struct strbuf sb = STRBUF_INIT;
683 int i;
684 const char *encoding = "utf-8";
685 struct diff_options opts;
686 int need_8bit_cte = 0;
688 if (rev->commit_format != CMIT_FMT_EMAIL)
689 die("Cover letter needs email format");
691 if (!use_stdout && reopen_stdout(numbered_files ?
692 NULL : "cover-letter", 0, rev))
693 return;
695 head_sha1 = sha1_to_hex(head->object.sha1);
697 log_write_email_headers(rev, head_sha1, &subject_start, &extra_headers,
698 &need_8bit_cte);
700 committer = git_committer_info(0);
702 msg = body;
703 pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
704 encoding);
705 pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
706 encoding, need_8bit_cte);
707 pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
708 printf("%s\n", sb.buf);
710 strbuf_release(&sb);
712 shortlog_init(&log);
713 log.wrap_lines = 1;
714 log.wrap = 72;
715 log.in1 = 2;
716 log.in2 = 4;
717 for (i = 0; i < nr; i++)
718 shortlog_add_commit(&log, list[i]);
720 shortlog_output(&log);
723 * We can only do diffstat with a unique reference point
725 if (!origin)
726 return;
728 memcpy(&opts, &rev->diffopt, sizeof(opts));
729 opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
731 diff_setup_done(&opts);
733 diff_tree_sha1(origin->tree->object.sha1,
734 head->tree->object.sha1,
735 "", &opts);
736 diffcore_std(&opts);
737 diff_flush(&opts);
739 printf("\n");
742 static const char *clean_message_id(const char *msg_id)
744 char ch;
745 const char *a, *z, *m;
747 m = msg_id;
748 while ((ch = *m) && (isspace(ch) || (ch == '<')))
749 m++;
750 a = m;
751 z = NULL;
752 while ((ch = *m)) {
753 if (!isspace(ch) && (ch != '>'))
754 z = m;
755 m++;
757 if (!z)
758 die("insane in-reply-to: %s", msg_id);
759 if (++z == m)
760 return a;
761 return xmemdupz(a, z - a);
764 static const char *set_outdir(const char *prefix, const char *output_directory)
766 if (output_directory && is_absolute_path(output_directory))
767 return output_directory;
769 if (!prefix || !*prefix) {
770 if (output_directory)
771 return output_directory;
772 /* The user did not explicitly ask for "./" */
773 outdir_offset = 2;
774 return "./";
777 outdir_offset = strlen(prefix);
778 if (!output_directory)
779 return prefix;
781 return xstrdup(prefix_filename(prefix, outdir_offset,
782 output_directory));
785 int cmd_format_patch(int argc, const char **argv, const char *prefix)
787 struct commit *commit;
788 struct commit **list = NULL;
789 struct rev_info rev;
790 int nr = 0, total, i, j;
791 int use_stdout = 0;
792 int start_number = -1;
793 int keep_subject = 0;
794 int numbered_files = 0; /* _just_ numbers */
795 int subject_prefix = 0;
796 int ignore_if_in_upstream = 0;
797 int cover_letter = 0;
798 int boundary_count = 0;
799 int no_binary_diff = 0;
800 struct commit *origin = NULL, *head = NULL;
801 const char *in_reply_to = NULL;
802 struct patch_ids ids;
803 char *add_signoff = NULL;
804 struct strbuf buf = STRBUF_INIT;
806 git_config(git_format_config, NULL);
807 init_revisions(&rev, prefix);
808 rev.commit_format = CMIT_FMT_EMAIL;
809 rev.verbose_header = 1;
810 rev.diff = 1;
811 rev.combine_merges = 0;
812 rev.ignore_merges = 1;
813 DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
815 rev.subject_prefix = fmt_patch_subject_prefix;
817 if (default_attach) {
818 rev.mime_boundary = default_attach;
819 rev.no_inline = 1;
823 * Parse the arguments before setup_revisions(), or something
824 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
825 * possibly a valid SHA1.
827 for (i = 1, j = 1; i < argc; i++) {
828 if (!strcmp(argv[i], "--stdout"))
829 use_stdout = 1;
830 else if (!strcmp(argv[i], "-n") ||
831 !strcmp(argv[i], "--numbered"))
832 numbered = 1;
833 else if (!strcmp(argv[i], "-N") ||
834 !strcmp(argv[i], "--no-numbered")) {
835 numbered = 0;
836 auto_number = 0;
838 else if (!prefixcmp(argv[i], "--start-number="))
839 start_number = strtol(argv[i] + 15, NULL, 10);
840 else if (!strcmp(argv[i], "--numbered-files"))
841 numbered_files = 1;
842 else if (!strcmp(argv[i], "--start-number")) {
843 i++;
844 if (i == argc)
845 die("Need a number for --start-number");
846 start_number = strtol(argv[i], NULL, 10);
848 else if (!prefixcmp(argv[i], "--cc=")) {
849 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
850 extra_cc[extra_cc_nr++] = xstrdup(argv[i] + 5);
852 else if (!strcmp(argv[i], "-k") ||
853 !strcmp(argv[i], "--keep-subject")) {
854 keep_subject = 1;
855 rev.total = -1;
857 else if (!strcmp(argv[i], "--output-directory") ||
858 !strcmp(argv[i], "-o")) {
859 i++;
860 if (argc <= i)
861 die("Which directory?");
862 if (output_directory)
863 die("Two output directories?");
864 output_directory = argv[i];
866 else if (!strcmp(argv[i], "--signoff") ||
867 !strcmp(argv[i], "-s")) {
868 const char *committer;
869 const char *endpos;
870 committer = git_committer_info(IDENT_ERROR_ON_NO_NAME);
871 endpos = strchr(committer, '>');
872 if (!endpos)
873 die("bogus committer info %s", committer);
874 add_signoff = xmemdupz(committer, endpos - committer + 1);
876 else if (!strcmp(argv[i], "--attach")) {
877 rev.mime_boundary = git_version_string;
878 rev.no_inline = 1;
880 else if (!prefixcmp(argv[i], "--attach=")) {
881 rev.mime_boundary = argv[i] + 9;
882 rev.no_inline = 1;
884 else if (!strcmp(argv[i], "--no-attach")) {
885 rev.mime_boundary = NULL;
886 rev.no_inline = 0;
888 else if (!strcmp(argv[i], "--inline")) {
889 rev.mime_boundary = git_version_string;
890 rev.no_inline = 0;
892 else if (!prefixcmp(argv[i], "--inline=")) {
893 rev.mime_boundary = argv[i] + 9;
894 rev.no_inline = 0;
896 else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
897 ignore_if_in_upstream = 1;
898 else if (!strcmp(argv[i], "--thread")
899 || !strcmp(argv[i], "--thread=shallow"))
900 thread = THREAD_SHALLOW;
901 else if (!strcmp(argv[i], "--thread=deep"))
902 thread = THREAD_DEEP;
903 else if (!strcmp(argv[i], "--no-thread"))
904 thread = 0;
905 else if (!prefixcmp(argv[i], "--in-reply-to="))
906 in_reply_to = argv[i] + 14;
907 else if (!strcmp(argv[i], "--in-reply-to")) {
908 i++;
909 if (i == argc)
910 die("Need a Message-Id for --in-reply-to");
911 in_reply_to = argv[i];
912 } else if (!prefixcmp(argv[i], "--subject-prefix=")) {
913 subject_prefix = 1;
914 rev.subject_prefix = argv[i] + 17;
915 } else if (!prefixcmp(argv[i], "--suffix="))
916 fmt_patch_suffix = argv[i] + 9;
917 else if (!strcmp(argv[i], "--cover-letter"))
918 cover_letter = 1;
919 else if (!strcmp(argv[i], "--no-binary"))
920 no_binary_diff = 1;
921 else
922 argv[j++] = argv[i];
924 argc = j;
926 for (i = 0; i < extra_hdr_nr; i++) {
927 strbuf_addstr(&buf, extra_hdr[i]);
928 strbuf_addch(&buf, '\n');
931 if (extra_to_nr)
932 strbuf_addstr(&buf, "To: ");
933 for (i = 0; i < extra_to_nr; i++) {
934 if (i)
935 strbuf_addstr(&buf, " ");
936 strbuf_addstr(&buf, extra_to[i]);
937 if (i + 1 < extra_to_nr)
938 strbuf_addch(&buf, ',');
939 strbuf_addch(&buf, '\n');
942 if (extra_cc_nr)
943 strbuf_addstr(&buf, "Cc: ");
944 for (i = 0; i < extra_cc_nr; i++) {
945 if (i)
946 strbuf_addstr(&buf, " ");
947 strbuf_addstr(&buf, extra_cc[i]);
948 if (i + 1 < extra_cc_nr)
949 strbuf_addch(&buf, ',');
950 strbuf_addch(&buf, '\n');
953 rev.extra_headers = strbuf_detach(&buf, 0);
955 if (start_number < 0)
956 start_number = 1;
957 if (numbered && keep_subject)
958 die ("-n and -k are mutually exclusive.");
959 if (keep_subject && subject_prefix)
960 die ("--subject-prefix and -k are mutually exclusive.");
962 argc = setup_revisions(argc, argv, &rev, "HEAD");
963 if (argc > 1)
964 die ("unrecognized argument: %s", argv[1]);
966 if (!rev.diffopt.output_format
967 || rev.diffopt.output_format == DIFF_FORMAT_PATCH)
968 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
970 if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
971 DIFF_OPT_SET(&rev.diffopt, BINARY);
973 if (!use_stdout)
974 output_directory = set_outdir(prefix, output_directory);
976 if (output_directory) {
977 if (use_stdout)
978 die("standard output, or directory, which one?");
979 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
980 die("Could not create directory %s",
981 output_directory);
984 if (rev.pending.nr == 1) {
985 if (rev.max_count < 0 && !rev.show_root_diff) {
987 * This is traditional behaviour of "git format-patch
988 * origin" that prepares what the origin side still
989 * does not have.
991 rev.pending.objects[0].item->flags |= UNINTERESTING;
992 add_head_to_pending(&rev);
995 * Otherwise, it is "format-patch -22 HEAD", and/or
996 * "format-patch --root HEAD". The user wants
997 * get_revision() to do the usual traversal.
1002 * We cannot move this anywhere earlier because we do want to
1003 * know if --root was given explicitly from the comand line.
1005 rev.show_root_diff = 1;
1007 if (cover_letter) {
1008 /* remember the range */
1009 int i;
1010 for (i = 0; i < rev.pending.nr; i++) {
1011 struct object *o = rev.pending.objects[i].item;
1012 if (!(o->flags & UNINTERESTING))
1013 head = (struct commit *)o;
1015 /* We can't generate a cover letter without any patches */
1016 if (!head)
1017 return 0;
1020 if (ignore_if_in_upstream)
1021 get_patch_ids(&rev, &ids, prefix);
1023 if (!use_stdout)
1024 realstdout = xfdopen(xdup(1), "w");
1026 if (prepare_revision_walk(&rev))
1027 die("revision walk setup failed");
1028 rev.boundary = 1;
1029 while ((commit = get_revision(&rev)) != NULL) {
1030 if (commit->object.flags & BOUNDARY) {
1031 boundary_count++;
1032 origin = (boundary_count == 1) ? commit : NULL;
1033 continue;
1036 /* ignore merges */
1037 if (commit->parents && commit->parents->next)
1038 continue;
1040 if (ignore_if_in_upstream &&
1041 has_commit_patch_id(commit, &ids))
1042 continue;
1044 nr++;
1045 list = xrealloc(list, nr * sizeof(list[0]));
1046 list[nr - 1] = commit;
1048 total = nr;
1049 if (!keep_subject && auto_number && total > 1)
1050 numbered = 1;
1051 if (numbered)
1052 rev.total = total + start_number - 1;
1053 if (in_reply_to || thread || cover_letter)
1054 rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
1055 if (in_reply_to) {
1056 const char *msgid = clean_message_id(in_reply_to);
1057 string_list_append(msgid, rev.ref_message_ids);
1059 if (cover_letter) {
1060 if (thread)
1061 gen_message_id(&rev, "cover");
1062 make_cover_letter(&rev, use_stdout, numbered, numbered_files,
1063 origin, nr, list, head);
1064 total++;
1065 start_number--;
1067 rev.add_signoff = add_signoff;
1068 while (0 <= --nr) {
1069 int shown;
1070 commit = list[nr];
1071 rev.nr = total - nr + (start_number - 1);
1072 /* Make the second and subsequent mails replies to the first */
1073 if (thread) {
1074 /* Have we already had a message ID? */
1075 if (rev.message_id) {
1077 * For deep threading: make every mail
1078 * a reply to the previous one, no
1079 * matter what other options are set.
1081 * For shallow threading:
1083 * Without --cover-letter and
1084 * --in-reply-to, make every mail a
1085 * reply to the one before.
1087 * With --in-reply-to but no
1088 * --cover-letter, make every mail a
1089 * reply to the <reply-to>.
1091 * With --cover-letter, make every
1092 * mail but the cover letter a reply
1093 * to the cover letter. The cover
1094 * letter is a reply to the
1095 * --in-reply-to, if specified.
1097 if (thread == THREAD_SHALLOW
1098 && rev.ref_message_ids->nr > 0
1099 && (!cover_letter || rev.nr > 1))
1100 free(rev.message_id);
1101 else
1102 string_list_append(rev.message_id,
1103 rev.ref_message_ids);
1105 gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
1107 if (!use_stdout && reopen_stdout(numbered_files ? NULL :
1108 get_oneline_for_filename(commit, keep_subject),
1109 rev.nr, &rev))
1110 die("Failed to create output files");
1111 shown = log_tree_commit(&rev, commit);
1112 free(commit->buffer);
1113 commit->buffer = NULL;
1115 /* We put one extra blank line between formatted
1116 * patches and this flag is used by log-tree code
1117 * to see if it needs to emit a LF before showing
1118 * the log; when using one file per patch, we do
1119 * not want the extra blank line.
1121 if (!use_stdout)
1122 rev.shown_one = 0;
1123 if (shown) {
1124 if (rev.mime_boundary)
1125 printf("\n--%s%s--\n\n\n",
1126 mime_boundary_leader,
1127 rev.mime_boundary);
1128 else
1129 printf("-- \n%s\n\n", git_version_string);
1131 if (!use_stdout)
1132 fclose(stdout);
1134 free(list);
1135 if (ignore_if_in_upstream)
1136 free_patch_ids(&ids);
1137 return 0;
1140 static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
1142 unsigned char sha1[20];
1143 if (get_sha1(arg, sha1) == 0) {
1144 struct commit *commit = lookup_commit_reference(sha1);
1145 if (commit) {
1146 commit->object.flags |= flags;
1147 add_pending_object(revs, &commit->object, arg);
1148 return 0;
1151 return -1;
1154 static const char cherry_usage[] =
1155 "git cherry [-v] [<upstream> [<head> [<limit>]]]";
1156 int cmd_cherry(int argc, const char **argv, const char *prefix)
1158 struct rev_info revs;
1159 struct patch_ids ids;
1160 struct commit *commit;
1161 struct commit_list *list = NULL;
1162 struct branch *current_branch;
1163 const char *upstream;
1164 const char *head = "HEAD";
1165 const char *limit = NULL;
1166 int verbose = 0;
1168 if (argc > 1 && !strcmp(argv[1], "-v")) {
1169 verbose = 1;
1170 argc--;
1171 argv++;
1174 switch (argc) {
1175 case 4:
1176 limit = argv[3];
1177 /* FALLTHROUGH */
1178 case 3:
1179 head = argv[2];
1180 /* FALLTHROUGH */
1181 case 2:
1182 upstream = argv[1];
1183 break;
1184 default:
1185 current_branch = branch_get(NULL);
1186 if (!current_branch || !current_branch->merge
1187 || !current_branch->merge[0]
1188 || !current_branch->merge[0]->dst) {
1189 fprintf(stderr, "Could not find a tracked"
1190 " remote branch, please"
1191 " specify <upstream> manually.\n");
1192 usage(cherry_usage);
1195 upstream = current_branch->merge[0]->dst;
1198 init_revisions(&revs, prefix);
1199 revs.diff = 1;
1200 revs.combine_merges = 0;
1201 revs.ignore_merges = 1;
1202 DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
1204 if (add_pending_commit(head, &revs, 0))
1205 die("Unknown commit %s", head);
1206 if (add_pending_commit(upstream, &revs, UNINTERESTING))
1207 die("Unknown commit %s", upstream);
1209 /* Don't say anything if head and upstream are the same. */
1210 if (revs.pending.nr == 2) {
1211 struct object_array_entry *o = revs.pending.objects;
1212 if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
1213 return 0;
1216 get_patch_ids(&revs, &ids, prefix);
1218 if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
1219 die("Unknown commit %s", limit);
1221 /* reverse the list of commits */
1222 if (prepare_revision_walk(&revs))
1223 die("revision walk setup failed");
1224 while ((commit = get_revision(&revs)) != NULL) {
1225 /* ignore merges */
1226 if (commit->parents && commit->parents->next)
1227 continue;
1229 commit_list_insert(commit, &list);
1232 while (list) {
1233 char sign = '+';
1235 commit = list->item;
1236 if (has_commit_patch_id(commit, &ids))
1237 sign = '-';
1239 if (verbose) {
1240 struct strbuf buf = STRBUF_INIT;
1241 pretty_print_commit(CMIT_FMT_ONELINE, commit,
1242 &buf, 0, NULL, NULL, 0, 0);
1243 printf("%c %s %s\n", sign,
1244 sha1_to_hex(commit->object.sha1), buf.buf);
1245 strbuf_release(&buf);
1247 else {
1248 printf("%c %s\n", sign,
1249 sha1_to_hex(commit->object.sha1));
1252 list = list->next;
1255 free_patch_ids(&ids);
1256 return 0;