Provide git_config with a callback-data parameter
[git/git.git] / builtin-log.c
1 /*
2 * Builtin "git log" and related commands (show, whatchanged)
3 *
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 "refs.h"
18 #include "run-command.h"
19 #include "shortlog.h"
20
21 static int default_show_root = 1;
22 static const char *fmt_patch_subject_prefix = "PATCH";
23 static const char *fmt_pretty;
24
25 static void add_name_decoration(const char *prefix, const char *name, struct object *obj)
26 {
27 int plen = strlen(prefix);
28 int nlen = strlen(name);
29 struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + plen + nlen);
30 memcpy(res->name, prefix, plen);
31 memcpy(res->name + plen, name, nlen + 1);
32 res->next = add_decoration(&name_decoration, obj, res);
33 }
34
35 static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
36 {
37 struct object *obj = parse_object(sha1);
38 if (!obj)
39 return 0;
40 add_name_decoration("", refname, obj);
41 while (obj->type == OBJ_TAG) {
42 obj = ((struct tag *)obj)->tagged;
43 if (!obj)
44 break;
45 add_name_decoration("tag: ", refname, obj);
46 }
47 return 0;
48 }
49
50 static void cmd_log_init(int argc, const char **argv, const char *prefix,
51 struct rev_info *rev)
52 {
53 int i;
54 int decorate = 0;
55
56 rev->abbrev = DEFAULT_ABBREV;
57 rev->commit_format = CMIT_FMT_DEFAULT;
58 if (fmt_pretty)
59 get_commit_format(fmt_pretty, rev);
60 rev->verbose_header = 1;
61 DIFF_OPT_SET(&rev->diffopt, RECURSIVE);
62 rev->show_root_diff = default_show_root;
63 rev->subject_prefix = fmt_patch_subject_prefix;
64 argc = setup_revisions(argc, argv, rev, "HEAD");
65 if (rev->diffopt.pickaxe || rev->diffopt.filter)
66 rev->always_show_header = 0;
67 if (DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES)) {
68 rev->always_show_header = 0;
69 if (rev->diffopt.nr_paths != 1)
70 usage("git logs can only follow renames on one pathname at a time");
71 }
72 for (i = 1; i < argc; i++) {
73 const char *arg = argv[i];
74 if (!strcmp(arg, "--decorate")) {
75 if (!decorate)
76 for_each_ref(add_ref_decoration, NULL);
77 decorate = 1;
78 } else
79 die("unrecognized argument: %s", arg);
80 }
81 }
82
83 /*
84 * This gives a rough estimate for how many commits we
85 * will print out in the list.
86 */
87 static int estimate_commit_count(struct rev_info *rev, struct commit_list *list)
88 {
89 int n = 0;
90
91 while (list) {
92 struct commit *commit = list->item;
93 unsigned int flags = commit->object.flags;
94 list = list->next;
95 if (!(flags & (TREESAME | UNINTERESTING)))
96 n++;
97 }
98 return n;
99 }
100
101 static void show_early_header(struct rev_info *rev, const char *stage, int nr)
102 {
103 if (rev->shown_one) {
104 rev->shown_one = 0;
105 if (rev->commit_format != CMIT_FMT_ONELINE)
106 putchar(rev->diffopt.line_termination);
107 }
108 printf("Final output: %d %s\n", nr, stage);
109 }
110
111 struct itimerval early_output_timer;
112
113 static void log_show_early(struct rev_info *revs, struct commit_list *list)
114 {
115 int i = revs->early_output;
116 int show_header = 1;
117
118 sort_in_topological_order(&list, revs->lifo);
119 while (list && i) {
120 struct commit *commit = list->item;
121 switch (simplify_commit(revs, commit)) {
122 case commit_show:
123 if (show_header) {
124 int n = estimate_commit_count(revs, list);
125 show_early_header(revs, "incomplete", n);
126 show_header = 0;
127 }
128 log_tree_commit(revs, commit);
129 i--;
130 break;
131 case commit_ignore:
132 break;
133 case commit_error:
134 return;
135 }
136 list = list->next;
137 }
138
139 /* Did we already get enough commits for the early output? */
140 if (!i)
141 return;
142
143 /*
144 * ..if no, then repeat it twice a second until we
145 * do.
146 *
147 * NOTE! We don't use "it_interval", because if the
148 * reader isn't listening, we want our output to be
149 * throttled by the writing, and not have the timer
150 * trigger every second even if we're blocked on a
151 * reader!
152 */
153 early_output_timer.it_value.tv_sec = 0;
154 early_output_timer.it_value.tv_usec = 500000;
155 setitimer(ITIMER_REAL, &early_output_timer, NULL);
156 }
157
158 static void early_output(int signal)
159 {
160 show_early_output = log_show_early;
161 }
162
163 static void setup_early_output(struct rev_info *rev)
164 {
165 struct sigaction sa;
166
167 /*
168 * Set up the signal handler, minimally intrusively:
169 * we only set a single volatile integer word (not
170 * using sigatomic_t - trying to avoid unnecessary
171 * system dependencies and headers), and using
172 * SA_RESTART.
173 */
174 memset(&sa, 0, sizeof(sa));
175 sa.sa_handler = early_output;
176 sigemptyset(&sa.sa_mask);
177 sa.sa_flags = SA_RESTART;
178 sigaction(SIGALRM, &sa, NULL);
179
180 /*
181 * If we can get the whole output in less than a
182 * tenth of a second, don't even bother doing the
183 * early-output thing..
184 *
185 * This is a one-time-only trigger.
186 */
187 early_output_timer.it_value.tv_sec = 0;
188 early_output_timer.it_value.tv_usec = 100000;
189 setitimer(ITIMER_REAL, &early_output_timer, NULL);
190 }
191
192 static void finish_early_output(struct rev_info *rev)
193 {
194 int n = estimate_commit_count(rev, rev->commits);
195 signal(SIGALRM, SIG_IGN);
196 show_early_header(rev, "done", n);
197 }
198
199 static int cmd_log_walk(struct rev_info *rev)
200 {
201 struct commit *commit;
202
203 if (rev->early_output)
204 setup_early_output(rev);
205
206 if (prepare_revision_walk(rev))
207 die("revision walk setup failed");
208
209 if (rev->early_output)
210 finish_early_output(rev);
211
212 while ((commit = get_revision(rev)) != NULL) {
213 log_tree_commit(rev, commit);
214 if (!rev->reflog_info) {
215 /* we allow cycles in reflog ancestry */
216 free(commit->buffer);
217 commit->buffer = NULL;
218 }
219 free_commit_list(commit->parents);
220 commit->parents = NULL;
221 }
222 return 0;
223 }
224
225 static int git_log_config(const char *var, const char *value, void *cb)
226 {
227 if (!strcmp(var, "format.pretty"))
228 return git_config_string(&fmt_pretty, var, value);
229 if (!strcmp(var, "format.subjectprefix")) {
230 if (!value)
231 config_error_nonbool(var);
232 fmt_patch_subject_prefix = xstrdup(value);
233 return 0;
234 }
235 if (!strcmp(var, "log.showroot")) {
236 default_show_root = git_config_bool(var, value);
237 return 0;
238 }
239 return git_diff_ui_config(var, value, cb);
240 }
241
242 int cmd_whatchanged(int argc, const char **argv, const char *prefix)
243 {
244 struct rev_info rev;
245
246 git_config(git_log_config, NULL);
247
248 if (diff_use_color_default == -1)
249 diff_use_color_default = git_use_color_default;
250
251 init_revisions(&rev, prefix);
252 rev.diff = 1;
253 rev.simplify_history = 0;
254 cmd_log_init(argc, argv, prefix, &rev);
255 if (!rev.diffopt.output_format)
256 rev.diffopt.output_format = DIFF_FORMAT_RAW;
257 return cmd_log_walk(&rev);
258 }
259
260 static void show_tagger(char *buf, int len, struct rev_info *rev)
261 {
262 char *email_end, *p;
263 unsigned long date;
264 int tz;
265
266 email_end = memchr(buf, '>', len);
267 if (!email_end)
268 return;
269 p = ++email_end;
270 while (isspace(*p))
271 p++;
272 date = strtoul(p, &p, 10);
273 while (isspace(*p))
274 p++;
275 tz = (int)strtol(p, NULL, 10);
276 printf("Tagger: %.*s\nDate: %s\n", (int)(email_end - buf), buf,
277 show_date(date, tz, rev->date_mode));
278 }
279
280 static int show_object(const unsigned char *sha1, int show_tag_object,
281 struct rev_info *rev)
282 {
283 unsigned long size;
284 enum object_type type;
285 char *buf = read_sha1_file(sha1, &type, &size);
286 int offset = 0;
287
288 if (!buf)
289 return error("Could not read object %s", sha1_to_hex(sha1));
290
291 if (show_tag_object)
292 while (offset < size && buf[offset] != '\n') {
293 int new_offset = offset + 1;
294 while (new_offset < size && buf[new_offset++] != '\n')
295 ; /* do nothing */
296 if (!prefixcmp(buf + offset, "tagger "))
297 show_tagger(buf + offset + 7,
298 new_offset - offset - 7, rev);
299 offset = new_offset;
300 }
301
302 if (offset < size)
303 fwrite(buf + offset, size - offset, 1, stdout);
304 free(buf);
305 return 0;
306 }
307
308 static int show_tree_object(const unsigned char *sha1,
309 const char *base, int baselen,
310 const char *pathname, unsigned mode, int stage)
311 {
312 printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
313 return 0;
314 }
315
316 int cmd_show(int argc, const char **argv, const char *prefix)
317 {
318 struct rev_info rev;
319 struct object_array_entry *objects;
320 int i, count, ret = 0;
321
322 git_config(git_log_config, NULL);
323
324 if (diff_use_color_default == -1)
325 diff_use_color_default = git_use_color_default;
326
327 init_revisions(&rev, prefix);
328 rev.diff = 1;
329 rev.combine_merges = 1;
330 rev.dense_combined_merges = 1;
331 rev.always_show_header = 1;
332 rev.ignore_merges = 0;
333 rev.no_walk = 1;
334 cmd_log_init(argc, argv, prefix, &rev);
335
336 count = rev.pending.nr;
337 objects = rev.pending.objects;
338 for (i = 0; i < count && !ret; i++) {
339 struct object *o = objects[i].item;
340 const char *name = objects[i].name;
341 switch (o->type) {
342 case OBJ_BLOB:
343 ret = show_object(o->sha1, 0, NULL);
344 break;
345 case OBJ_TAG: {
346 struct tag *t = (struct tag *)o;
347
348 printf("%stag %s%s\n",
349 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
350 t->tag,
351 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
352 ret = show_object(o->sha1, 1, &rev);
353 objects[i].item = (struct object *)t->tagged;
354 i--;
355 break;
356 }
357 case OBJ_TREE:
358 printf("%stree %s%s\n\n",
359 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
360 name,
361 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
362 read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
363 show_tree_object);
364 break;
365 case OBJ_COMMIT:
366 rev.pending.nr = rev.pending.alloc = 0;
367 rev.pending.objects = NULL;
368 add_object_array(o, name, &rev.pending);
369 ret = cmd_log_walk(&rev);
370 break;
371 default:
372 ret = error("Unknown type: %d", o->type);
373 }
374 }
375 free(objects);
376 return ret;
377 }
378
379 /*
380 * This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
381 */
382 int cmd_log_reflog(int argc, const char **argv, const char *prefix)
383 {
384 struct rev_info rev;
385
386 git_config(git_log_config, NULL);
387
388 if (diff_use_color_default == -1)
389 diff_use_color_default = git_use_color_default;
390
391 init_revisions(&rev, prefix);
392 init_reflog_walk(&rev.reflog_info);
393 rev.abbrev_commit = 1;
394 rev.verbose_header = 1;
395 cmd_log_init(argc, argv, prefix, &rev);
396
397 /*
398 * This means that we override whatever commit format the user gave
399 * on the cmd line. Sad, but cmd_log_init() currently doesn't
400 * allow us to set a different default.
401 */
402 rev.commit_format = CMIT_FMT_ONELINE;
403 rev.use_terminator = 1;
404 rev.always_show_header = 1;
405
406 /*
407 * We get called through "git reflog", so unlike the other log
408 * routines, we need to set up our pager manually..
409 */
410 setup_pager();
411
412 return cmd_log_walk(&rev);
413 }
414
415 int cmd_log(int argc, const char **argv, const char *prefix)
416 {
417 struct rev_info rev;
418
419 git_config(git_log_config, NULL);
420
421 if (diff_use_color_default == -1)
422 diff_use_color_default = git_use_color_default;
423
424 init_revisions(&rev, prefix);
425 rev.always_show_header = 1;
426 cmd_log_init(argc, argv, prefix, &rev);
427 return cmd_log_walk(&rev);
428 }
429
430 /* format-patch */
431 #define FORMAT_PATCH_NAME_MAX 64
432
433 static int istitlechar(char c)
434 {
435 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
436 (c >= '0' && c <= '9') || c == '.' || c == '_';
437 }
438
439 static const char *fmt_patch_suffix = ".patch";
440 static int numbered = 0;
441 static int auto_number = 0;
442
443 static char **extra_hdr;
444 static int extra_hdr_nr;
445 static int extra_hdr_alloc;
446
447 static char **extra_to;
448 static int extra_to_nr;
449 static int extra_to_alloc;
450
451 static char **extra_cc;
452 static int extra_cc_nr;
453 static int extra_cc_alloc;
454
455 static void add_header(const char *value)
456 {
457 int len = strlen(value);
458 while (value[len - 1] == '\n')
459 len--;
460 if (!strncasecmp(value, "to: ", 4)) {
461 ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
462 extra_to[extra_to_nr++] = xstrndup(value + 4, len - 4);
463 return;
464 }
465 if (!strncasecmp(value, "cc: ", 4)) {
466 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
467 extra_cc[extra_cc_nr++] = xstrndup(value + 4, len - 4);
468 return;
469 }
470 ALLOC_GROW(extra_hdr, extra_hdr_nr + 1, extra_hdr_alloc);
471 extra_hdr[extra_hdr_nr++] = xstrndup(value, len);
472 }
473
474 static int git_format_config(const char *var, const char *value, void *cb)
475 {
476 if (!strcmp(var, "format.headers")) {
477 if (!value)
478 die("format.headers without value");
479 add_header(value);
480 return 0;
481 }
482 if (!strcmp(var, "format.suffix")) {
483 if (!value)
484 return config_error_nonbool(var);
485 fmt_patch_suffix = xstrdup(value);
486 return 0;
487 }
488 if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
489 return 0;
490 }
491 if (!strcmp(var, "format.numbered")) {
492 if (value && !strcasecmp(value, "auto")) {
493 auto_number = 1;
494 return 0;
495 }
496 numbered = git_config_bool(var, value);
497 return 0;
498 }
499
500 return git_log_config(var, value, cb);
501 }
502
503
504 static const char *get_oneline_for_filename(struct commit *commit,
505 int keep_subject)
506 {
507 static char filename[PATH_MAX];
508 char *sol;
509 int len = 0;
510 int suffix_len = strlen(fmt_patch_suffix) + 1;
511
512 sol = strstr(commit->buffer, "\n\n");
513 if (!sol)
514 filename[0] = '\0';
515 else {
516 int j, space = 0;
517
518 sol += 2;
519 /* strip [PATCH] or [PATCH blabla] */
520 if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
521 char *eos = strchr(sol + 6, ']');
522 if (eos) {
523 while (isspace(*eos))
524 eos++;
525 sol = eos;
526 }
527 }
528
529 for (j = 0;
530 j < FORMAT_PATCH_NAME_MAX - suffix_len - 5 &&
531 len < sizeof(filename) - suffix_len &&
532 sol[j] && sol[j] != '\n';
533 j++) {
534 if (istitlechar(sol[j])) {
535 if (space) {
536 filename[len++] = '-';
537 space = 0;
538 }
539 filename[len++] = sol[j];
540 if (sol[j] == '.')
541 while (sol[j + 1] == '.')
542 j++;
543 } else
544 space = 1;
545 }
546 while (filename[len - 1] == '.'
547 || filename[len - 1] == '-')
548 len--;
549 filename[len] = '\0';
550 }
551 return filename;
552 }
553
554 static FILE *realstdout = NULL;
555 static const char *output_directory = NULL;
556
557 static int reopen_stdout(const char *oneline, int nr, int total)
558 {
559 char filename[PATH_MAX];
560 int len = 0;
561 int suffix_len = strlen(fmt_patch_suffix) + 1;
562
563 if (output_directory) {
564 len = snprintf(filename, sizeof(filename), "%s",
565 output_directory);
566 if (len >=
567 sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
568 return error("name of output directory is too long");
569 if (filename[len - 1] != '/')
570 filename[len++] = '/';
571 }
572
573 if (!oneline)
574 len += sprintf(filename + len, "%d", nr);
575 else {
576 len += sprintf(filename + len, "%04d-", nr);
577 len += snprintf(filename + len, sizeof(filename) - len - 1
578 - suffix_len, "%s", oneline);
579 strcpy(filename + len, fmt_patch_suffix);
580 }
581
582 fprintf(realstdout, "%s\n", filename);
583 if (freopen(filename, "w", stdout) == NULL)
584 return error("Cannot open patch file %s",filename);
585
586 return 0;
587 }
588
589 static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids, const char *prefix)
590 {
591 struct rev_info check_rev;
592 struct commit *commit;
593 struct object *o1, *o2;
594 unsigned flags1, flags2;
595
596 if (rev->pending.nr != 2)
597 die("Need exactly one range.");
598
599 o1 = rev->pending.objects[0].item;
600 flags1 = o1->flags;
601 o2 = rev->pending.objects[1].item;
602 flags2 = o2->flags;
603
604 if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
605 die("Not a range.");
606
607 init_patch_ids(ids);
608
609 /* given a range a..b get all patch ids for b..a */
610 init_revisions(&check_rev, prefix);
611 o1->flags ^= UNINTERESTING;
612 o2->flags ^= UNINTERESTING;
613 add_pending_object(&check_rev, o1, "o1");
614 add_pending_object(&check_rev, o2, "o2");
615 if (prepare_revision_walk(&check_rev))
616 die("revision walk setup failed");
617
618 while ((commit = get_revision(&check_rev)) != NULL) {
619 /* ignore merges */
620 if (commit->parents && commit->parents->next)
621 continue;
622
623 add_commit_patch_id(commit, ids);
624 }
625
626 /* reset for next revision walk */
627 clear_commit_marks((struct commit *)o1,
628 SEEN | UNINTERESTING | SHOWN | ADDED);
629 clear_commit_marks((struct commit *)o2,
630 SEEN | UNINTERESTING | SHOWN | ADDED);
631 o1->flags = flags1;
632 o2->flags = flags2;
633 }
634
635 static void gen_message_id(struct rev_info *info, char *base)
636 {
637 const char *committer = git_committer_info(IDENT_WARN_ON_NO_NAME);
638 const char *email_start = strrchr(committer, '<');
639 const char *email_end = strrchr(committer, '>');
640 struct strbuf buf;
641 if (!email_start || !email_end || email_start > email_end - 1)
642 die("Could not extract email from committer identity.");
643 strbuf_init(&buf, 0);
644 strbuf_addf(&buf, "%s.%lu.git.%.*s", base,
645 (unsigned long) time(NULL),
646 (int)(email_end - email_start - 1), email_start + 1);
647 info->message_id = strbuf_detach(&buf, NULL);
648 }
649
650 static void make_cover_letter(struct rev_info *rev, int use_stdout,
651 int numbered, int numbered_files,
652 struct commit *origin,
653 int nr, struct commit **list, struct commit *head)
654 {
655 const char *committer;
656 char *head_sha1;
657 const char *subject_start = NULL;
658 const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
659 const char *msg;
660 const char *extra_headers = rev->extra_headers;
661 struct shortlog log;
662 struct strbuf sb;
663 int i;
664 const char *encoding = "utf-8";
665 struct diff_options opts;
666 int need_8bit_cte = 0;
667
668 if (rev->commit_format != CMIT_FMT_EMAIL)
669 die("Cover letter needs email format");
670
671 if (!use_stdout && reopen_stdout(numbered_files ?
672 NULL : "cover-letter", 0, rev->total))
673 return;
674
675 head_sha1 = sha1_to_hex(head->object.sha1);
676
677 log_write_email_headers(rev, head_sha1, &subject_start, &extra_headers,
678 &need_8bit_cte);
679
680 committer = git_committer_info(0);
681
682 msg = body;
683 strbuf_init(&sb, 0);
684 pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
685 encoding);
686 pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
687 encoding, need_8bit_cte);
688 pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
689 printf("%s\n", sb.buf);
690
691 strbuf_release(&sb);
692
693 shortlog_init(&log);
694 log.wrap_lines = 1;
695 log.wrap = 72;
696 log.in1 = 2;
697 log.in2 = 4;
698 for (i = 0; i < nr; i++)
699 shortlog_add_commit(&log, list[i]);
700
701 shortlog_output(&log);
702
703 /*
704 * We can only do diffstat with a unique reference point
705 */
706 if (!origin)
707 return;
708
709 memcpy(&opts, &rev->diffopt, sizeof(opts));
710 opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
711
712 diff_setup_done(&opts);
713
714 diff_tree_sha1(origin->tree->object.sha1,
715 head->tree->object.sha1,
716 "", &opts);
717 diffcore_std(&opts);
718 diff_flush(&opts);
719
720 printf("\n");
721 }
722
723 static const char *clean_message_id(const char *msg_id)
724 {
725 char ch;
726 const char *a, *z, *m;
727
728 m = msg_id;
729 while ((ch = *m) && (isspace(ch) || (ch == '<')))
730 m++;
731 a = m;
732 z = NULL;
733 while ((ch = *m)) {
734 if (!isspace(ch) && (ch != '>'))
735 z = m;
736 m++;
737 }
738 if (!z)
739 die("insane in-reply-to: %s", msg_id);
740 if (++z == m)
741 return a;
742 return xmemdupz(a, z - a);
743 }
744
745 int cmd_format_patch(int argc, const char **argv, const char *prefix)
746 {
747 struct commit *commit;
748 struct commit **list = NULL;
749 struct rev_info rev;
750 int nr = 0, total, i, j;
751 int use_stdout = 0;
752 int start_number = -1;
753 int keep_subject = 0;
754 int numbered_files = 0; /* _just_ numbers */
755 int subject_prefix = 0;
756 int ignore_if_in_upstream = 0;
757 int thread = 0;
758 int cover_letter = 0;
759 int boundary_count = 0;
760 int no_binary_diff = 0;
761 struct commit *origin = NULL, *head = NULL;
762 const char *in_reply_to = NULL;
763 struct patch_ids ids;
764 char *add_signoff = NULL;
765 struct strbuf buf;
766
767 git_config(git_format_config, NULL);
768 init_revisions(&rev, prefix);
769 rev.commit_format = CMIT_FMT_EMAIL;
770 rev.verbose_header = 1;
771 rev.diff = 1;
772 rev.combine_merges = 0;
773 rev.ignore_merges = 1;
774 DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
775
776 rev.subject_prefix = fmt_patch_subject_prefix;
777
778 /*
779 * Parse the arguments before setup_revisions(), or something
780 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
781 * possibly a valid SHA1.
782 */
783 for (i = 1, j = 1; i < argc; i++) {
784 if (!strcmp(argv[i], "--stdout"))
785 use_stdout = 1;
786 else if (!strcmp(argv[i], "-n") ||
787 !strcmp(argv[i], "--numbered"))
788 numbered = 1;
789 else if (!strcmp(argv[i], "-N") ||
790 !strcmp(argv[i], "--no-numbered")) {
791 numbered = 0;
792 auto_number = 0;
793 }
794 else if (!prefixcmp(argv[i], "--start-number="))
795 start_number = strtol(argv[i] + 15, NULL, 10);
796 else if (!strcmp(argv[i], "--numbered-files"))
797 numbered_files = 1;
798 else if (!strcmp(argv[i], "--start-number")) {
799 i++;
800 if (i == argc)
801 die("Need a number for --start-number");
802 start_number = strtol(argv[i], NULL, 10);
803 }
804 else if (!prefixcmp(argv[i], "--cc=")) {
805 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
806 extra_cc[extra_cc_nr++] = xstrdup(argv[i] + 5);
807 }
808 else if (!strcmp(argv[i], "-k") ||
809 !strcmp(argv[i], "--keep-subject")) {
810 keep_subject = 1;
811 rev.total = -1;
812 }
813 else if (!strcmp(argv[i], "--output-directory") ||
814 !strcmp(argv[i], "-o")) {
815 i++;
816 if (argc <= i)
817 die("Which directory?");
818 if (output_directory)
819 die("Two output directories?");
820 output_directory = argv[i];
821 }
822 else if (!strcmp(argv[i], "--signoff") ||
823 !strcmp(argv[i], "-s")) {
824 const char *committer;
825 const char *endpos;
826 committer = git_committer_info(IDENT_ERROR_ON_NO_NAME);
827 endpos = strchr(committer, '>');
828 if (!endpos)
829 die("bogos committer info %s\n", committer);
830 add_signoff = xmemdupz(committer, endpos - committer + 1);
831 }
832 else if (!strcmp(argv[i], "--attach")) {
833 rev.mime_boundary = git_version_string;
834 rev.no_inline = 1;
835 }
836 else if (!prefixcmp(argv[i], "--attach=")) {
837 rev.mime_boundary = argv[i] + 9;
838 rev.no_inline = 1;
839 }
840 else if (!strcmp(argv[i], "--inline")) {
841 rev.mime_boundary = git_version_string;
842 rev.no_inline = 0;
843 }
844 else if (!prefixcmp(argv[i], "--inline=")) {
845 rev.mime_boundary = argv[i] + 9;
846 rev.no_inline = 0;
847 }
848 else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
849 ignore_if_in_upstream = 1;
850 else if (!strcmp(argv[i], "--thread"))
851 thread = 1;
852 else if (!prefixcmp(argv[i], "--in-reply-to="))
853 in_reply_to = argv[i] + 14;
854 else if (!strcmp(argv[i], "--in-reply-to")) {
855 i++;
856 if (i == argc)
857 die("Need a Message-Id for --in-reply-to");
858 in_reply_to = argv[i];
859 } else if (!prefixcmp(argv[i], "--subject-prefix=")) {
860 subject_prefix = 1;
861 rev.subject_prefix = argv[i] + 17;
862 } else if (!prefixcmp(argv[i], "--suffix="))
863 fmt_patch_suffix = argv[i] + 9;
864 else if (!strcmp(argv[i], "--cover-letter"))
865 cover_letter = 1;
866 else if (!strcmp(argv[i], "--no-binary"))
867 no_binary_diff = 1;
868 else
869 argv[j++] = argv[i];
870 }
871 argc = j;
872
873 strbuf_init(&buf, 0);
874
875 for (i = 0; i < extra_hdr_nr; i++) {
876 strbuf_addstr(&buf, extra_hdr[i]);
877 strbuf_addch(&buf, '\n');
878 }
879
880 if (extra_to_nr)
881 strbuf_addstr(&buf, "To: ");
882 for (i = 0; i < extra_to_nr; i++) {
883 if (i)
884 strbuf_addstr(&buf, " ");
885 strbuf_addstr(&buf, extra_to[i]);
886 if (i + 1 < extra_to_nr)
887 strbuf_addch(&buf, ',');
888 strbuf_addch(&buf, '\n');
889 }
890
891 if (extra_cc_nr)
892 strbuf_addstr(&buf, "Cc: ");
893 for (i = 0; i < extra_cc_nr; i++) {
894 if (i)
895 strbuf_addstr(&buf, " ");
896 strbuf_addstr(&buf, extra_cc[i]);
897 if (i + 1 < extra_cc_nr)
898 strbuf_addch(&buf, ',');
899 strbuf_addch(&buf, '\n');
900 }
901
902 rev.extra_headers = strbuf_detach(&buf, 0);
903
904 if (start_number < 0)
905 start_number = 1;
906 if (numbered && keep_subject)
907 die ("-n and -k are mutually exclusive.");
908 if (keep_subject && subject_prefix)
909 die ("--subject-prefix and -k are mutually exclusive.");
910 if (numbered_files && use_stdout)
911 die ("--numbered-files and --stdout are mutually exclusive.");
912
913 argc = setup_revisions(argc, argv, &rev, "HEAD");
914 if (argc > 1)
915 die ("unrecognized argument: %s", argv[1]);
916
917 if (!rev.diffopt.output_format)
918 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
919
920 if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
921 DIFF_OPT_SET(&rev.diffopt, BINARY);
922
923 if (!output_directory && !use_stdout)
924 output_directory = prefix;
925
926 if (output_directory) {
927 if (use_stdout)
928 die("standard output, or directory, which one?");
929 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
930 die("Could not create directory %s",
931 output_directory);
932 }
933
934 if (rev.pending.nr == 1) {
935 if (rev.max_count < 0 && !rev.show_root_diff) {
936 /*
937 * This is traditional behaviour of "git format-patch
938 * origin" that prepares what the origin side still
939 * does not have.
940 */
941 rev.pending.objects[0].item->flags |= UNINTERESTING;
942 add_head_to_pending(&rev);
943 }
944 /*
945 * Otherwise, it is "format-patch -22 HEAD", and/or
946 * "format-patch --root HEAD". The user wants
947 * get_revision() to do the usual traversal.
948 */
949 }
950 if (cover_letter) {
951 /* remember the range */
952 int i;
953 for (i = 0; i < rev.pending.nr; i++) {
954 struct object *o = rev.pending.objects[i].item;
955 if (!(o->flags & UNINTERESTING))
956 head = (struct commit *)o;
957 }
958 /* We can't generate a cover letter without any patches */
959 if (!head)
960 return 0;
961 }
962
963 if (ignore_if_in_upstream)
964 get_patch_ids(&rev, &ids, prefix);
965
966 if (!use_stdout)
967 realstdout = xfdopen(xdup(1), "w");
968
969 if (prepare_revision_walk(&rev))
970 die("revision walk setup failed");
971 rev.boundary = 1;
972 while ((commit = get_revision(&rev)) != NULL) {
973 if (commit->object.flags & BOUNDARY) {
974 boundary_count++;
975 origin = (boundary_count == 1) ? commit : NULL;
976 continue;
977 }
978
979 /* ignore merges */
980 if (commit->parents && commit->parents->next)
981 continue;
982
983 if (ignore_if_in_upstream &&
984 has_commit_patch_id(commit, &ids))
985 continue;
986
987 nr++;
988 list = xrealloc(list, nr * sizeof(list[0]));
989 list[nr - 1] = commit;
990 }
991 total = nr;
992 if (!keep_subject && auto_number && total > 1)
993 numbered = 1;
994 if (numbered)
995 rev.total = total + start_number - 1;
996 if (in_reply_to)
997 rev.ref_message_id = clean_message_id(in_reply_to);
998 if (cover_letter) {
999 if (thread)
1000 gen_message_id(&rev, "cover");
1001 make_cover_letter(&rev, use_stdout, numbered, numbered_files,
1002 origin, nr, list, head);
1003 total++;
1004 start_number--;
1005 }
1006 rev.add_signoff = add_signoff;
1007 while (0 <= --nr) {
1008 int shown;
1009 commit = list[nr];
1010 rev.nr = total - nr + (start_number - 1);
1011 /* Make the second and subsequent mails replies to the first */
1012 if (thread) {
1013 /* Have we already had a message ID? */
1014 if (rev.message_id) {
1015 /*
1016 * If we've got the ID to be a reply
1017 * to, discard the current ID;
1018 * otherwise, make everything a reply
1019 * to that.
1020 */
1021 if (rev.ref_message_id)
1022 free(rev.message_id);
1023 else
1024 rev.ref_message_id = rev.message_id;
1025 }
1026 gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
1027 }
1028 if (!use_stdout && reopen_stdout(numbered_files ? NULL :
1029 get_oneline_for_filename(commit, keep_subject),
1030 rev.nr, rev.total))
1031 die("Failed to create output files");
1032 shown = log_tree_commit(&rev, commit);
1033 free(commit->buffer);
1034 commit->buffer = NULL;
1035
1036 /* We put one extra blank line between formatted
1037 * patches and this flag is used by log-tree code
1038 * to see if it needs to emit a LF before showing
1039 * the log; when using one file per patch, we do
1040 * not want the extra blank line.
1041 */
1042 if (!use_stdout)
1043 rev.shown_one = 0;
1044 if (shown) {
1045 if (rev.mime_boundary)
1046 printf("\n--%s%s--\n\n\n",
1047 mime_boundary_leader,
1048 rev.mime_boundary);
1049 else
1050 printf("-- \n%s\n\n", git_version_string);
1051 }
1052 if (!use_stdout)
1053 fclose(stdout);
1054 }
1055 free(list);
1056 if (ignore_if_in_upstream)
1057 free_patch_ids(&ids);
1058 return 0;
1059 }
1060
1061 static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
1062 {
1063 unsigned char sha1[20];
1064 if (get_sha1(arg, sha1) == 0) {
1065 struct commit *commit = lookup_commit_reference(sha1);
1066 if (commit) {
1067 commit->object.flags |= flags;
1068 add_pending_object(revs, &commit->object, arg);
1069 return 0;
1070 }
1071 }
1072 return -1;
1073 }
1074
1075 static const char cherry_usage[] =
1076 "git-cherry [-v] <upstream> [<head>] [<limit>]";
1077 int cmd_cherry(int argc, const char **argv, const char *prefix)
1078 {
1079 struct rev_info revs;
1080 struct patch_ids ids;
1081 struct commit *commit;
1082 struct commit_list *list = NULL;
1083 const char *upstream;
1084 const char *head = "HEAD";
1085 const char *limit = NULL;
1086 int verbose = 0;
1087
1088 if (argc > 1 && !strcmp(argv[1], "-v")) {
1089 verbose = 1;
1090 argc--;
1091 argv++;
1092 }
1093
1094 switch (argc) {
1095 case 4:
1096 limit = argv[3];
1097 /* FALLTHROUGH */
1098 case 3:
1099 head = argv[2];
1100 /* FALLTHROUGH */
1101 case 2:
1102 upstream = argv[1];
1103 break;
1104 default:
1105 usage(cherry_usage);
1106 }
1107
1108 init_revisions(&revs, prefix);
1109 revs.diff = 1;
1110 revs.combine_merges = 0;
1111 revs.ignore_merges = 1;
1112 DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
1113
1114 if (add_pending_commit(head, &revs, 0))
1115 die("Unknown commit %s", head);
1116 if (add_pending_commit(upstream, &revs, UNINTERESTING))
1117 die("Unknown commit %s", upstream);
1118
1119 /* Don't say anything if head and upstream are the same. */
1120 if (revs.pending.nr == 2) {
1121 struct object_array_entry *o = revs.pending.objects;
1122 if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
1123 return 0;
1124 }
1125
1126 get_patch_ids(&revs, &ids, prefix);
1127
1128 if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
1129 die("Unknown commit %s", limit);
1130
1131 /* reverse the list of commits */
1132 if (prepare_revision_walk(&revs))
1133 die("revision walk setup failed");
1134 while ((commit = get_revision(&revs)) != NULL) {
1135 /* ignore merges */
1136 if (commit->parents && commit->parents->next)
1137 continue;
1138
1139 commit_list_insert(commit, &list);
1140 }
1141
1142 while (list) {
1143 char sign = '+';
1144
1145 commit = list->item;
1146 if (has_commit_patch_id(commit, &ids))
1147 sign = '-';
1148
1149 if (verbose) {
1150 struct strbuf buf;
1151 strbuf_init(&buf, 0);
1152 pretty_print_commit(CMIT_FMT_ONELINE, commit,
1153 &buf, 0, NULL, NULL, 0, 0);
1154 printf("%c %s %s\n", sign,
1155 sha1_to_hex(commit->object.sha1), buf.buf);
1156 strbuf_release(&buf);
1157 }
1158 else {
1159 printf("%c %s\n", sign,
1160 sha1_to_hex(commit->object.sha1));
1161 }
1162
1163 list = list->next;
1164 }
1165
1166 free_patch_ids(&ids);
1167 return 0;
1168 }