MinGW: fix diff --no-index /dev/null ...
[git/spearce.git] / builtin-log.c
blob8549028817ac1a4add0a224ac2996bcbea9a6455
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"
21 /* Set a default date-time format for git log ("log.date" config variable) */
22 static const char *default_date_mode = NULL;
24 static int default_show_root = 1;
25 static const char *fmt_patch_subject_prefix = "PATCH";
26 static const char *fmt_pretty;
28 static void cmd_log_init(int argc, const char **argv, const char *prefix,
29 struct rev_info *rev)
31 int i;
33 rev->abbrev = DEFAULT_ABBREV;
34 rev->commit_format = CMIT_FMT_DEFAULT;
35 if (fmt_pretty)
36 get_commit_format(fmt_pretty, rev);
37 rev->verbose_header = 1;
38 DIFF_OPT_SET(&rev->diffopt, RECURSIVE);
39 rev->show_root_diff = default_show_root;
40 rev->subject_prefix = fmt_patch_subject_prefix;
41 DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
43 if (default_date_mode)
44 rev->date_mode = parse_date_format(default_date_mode);
46 argc = setup_revisions(argc, argv, rev, "HEAD");
48 if (rev->diffopt.pickaxe || rev->diffopt.filter)
49 rev->always_show_header = 0;
50 if (DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES)) {
51 rev->always_show_header = 0;
52 if (rev->diffopt.nr_paths != 1)
53 usage("git logs can only follow renames on one pathname at a time");
55 for (i = 1; i < argc; i++) {
56 const char *arg = argv[i];
57 if (!strcmp(arg, "--decorate")) {
58 load_ref_decorations();
59 rev->show_decorations = 1;
60 } else if (!strcmp(arg, "--source")) {
61 rev->show_source = 1;
62 } else
63 die("unrecognized argument: %s", arg);
68 * This gives a rough estimate for how many commits we
69 * will print out in the list.
71 static int estimate_commit_count(struct rev_info *rev, struct commit_list *list)
73 int n = 0;
75 while (list) {
76 struct commit *commit = list->item;
77 unsigned int flags = commit->object.flags;
78 list = list->next;
79 if (!(flags & (TREESAME | UNINTERESTING)))
80 n++;
82 return n;
85 static void show_early_header(struct rev_info *rev, const char *stage, int nr)
87 if (rev->shown_one) {
88 rev->shown_one = 0;
89 if (rev->commit_format != CMIT_FMT_ONELINE)
90 putchar(rev->diffopt.line_termination);
92 printf("Final output: %d %s\n", nr, stage);
95 struct itimerval early_output_timer;
97 static void log_show_early(struct rev_info *revs, struct commit_list *list)
99 int i = revs->early_output;
100 int show_header = 1;
102 sort_in_topological_order(&list, revs->lifo);
103 while (list && i) {
104 struct commit *commit = list->item;
105 switch (simplify_commit(revs, commit)) {
106 case commit_show:
107 if (show_header) {
108 int n = estimate_commit_count(revs, list);
109 show_early_header(revs, "incomplete", n);
110 show_header = 0;
112 log_tree_commit(revs, commit);
113 i--;
114 break;
115 case commit_ignore:
116 break;
117 case commit_error:
118 return;
120 list = list->next;
123 /* Did we already get enough commits for the early output? */
124 if (!i)
125 return;
128 * ..if no, then repeat it twice a second until we
129 * do.
131 * NOTE! We don't use "it_interval", because if the
132 * reader isn't listening, we want our output to be
133 * throttled by the writing, and not have the timer
134 * trigger every second even if we're blocked on a
135 * reader!
137 early_output_timer.it_value.tv_sec = 0;
138 early_output_timer.it_value.tv_usec = 500000;
139 setitimer(ITIMER_REAL, &early_output_timer, NULL);
142 static void early_output(int signal)
144 show_early_output = log_show_early;
147 static void setup_early_output(struct rev_info *rev)
149 struct sigaction sa;
152 * Set up the signal handler, minimally intrusively:
153 * we only set a single volatile integer word (not
154 * using sigatomic_t - trying to avoid unnecessary
155 * system dependencies and headers), and using
156 * SA_RESTART.
158 memset(&sa, 0, sizeof(sa));
159 sa.sa_handler = early_output;
160 sigemptyset(&sa.sa_mask);
161 sa.sa_flags = SA_RESTART;
162 sigaction(SIGALRM, &sa, NULL);
165 * If we can get the whole output in less than a
166 * tenth of a second, don't even bother doing the
167 * early-output thing..
169 * This is a one-time-only trigger.
171 early_output_timer.it_value.tv_sec = 0;
172 early_output_timer.it_value.tv_usec = 100000;
173 setitimer(ITIMER_REAL, &early_output_timer, NULL);
176 static void finish_early_output(struct rev_info *rev)
178 int n = estimate_commit_count(rev, rev->commits);
179 signal(SIGALRM, SIG_IGN);
180 show_early_header(rev, "done", n);
183 static int cmd_log_walk(struct rev_info *rev)
185 struct commit *commit;
187 if (rev->early_output)
188 setup_early_output(rev);
190 if (prepare_revision_walk(rev))
191 die("revision walk setup failed");
193 if (rev->early_output)
194 finish_early_output(rev);
197 * For --check and --exit-code, the exit code is based on CHECK_FAILED
198 * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to
199 * retain that state information if replacing rev->diffopt in this loop
201 while ((commit = get_revision(rev)) != NULL) {
202 log_tree_commit(rev, commit);
203 if (!rev->reflog_info) {
204 /* we allow cycles in reflog ancestry */
205 free(commit->buffer);
206 commit->buffer = NULL;
208 free_commit_list(commit->parents);
209 commit->parents = NULL;
211 if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
212 DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
213 return 02;
215 return diff_result_code(&rev->diffopt, 0);
218 static int git_log_config(const char *var, const char *value, void *cb)
220 if (!strcmp(var, "format.pretty"))
221 return git_config_string(&fmt_pretty, var, value);
222 if (!strcmp(var, "format.subjectprefix"))
223 return git_config_string(&fmt_patch_subject_prefix, var, value);
224 if (!strcmp(var, "log.date"))
225 return git_config_string(&default_date_mode, var, value);
226 if (!strcmp(var, "log.showroot")) {
227 default_show_root = git_config_bool(var, value);
228 return 0;
230 return git_diff_ui_config(var, value, cb);
233 int cmd_whatchanged(int argc, const char **argv, const char *prefix)
235 struct rev_info rev;
237 git_config(git_log_config, NULL);
239 if (diff_use_color_default == -1)
240 diff_use_color_default = git_use_color_default;
242 init_revisions(&rev, prefix);
243 rev.diff = 1;
244 rev.simplify_history = 0;
245 cmd_log_init(argc, argv, prefix, &rev);
246 if (!rev.diffopt.output_format)
247 rev.diffopt.output_format = DIFF_FORMAT_RAW;
248 return cmd_log_walk(&rev);
251 static void show_tagger(char *buf, int len, struct rev_info *rev)
253 struct strbuf out = STRBUF_INIT;
255 pp_user_info("Tagger", rev->commit_format, &out, buf, rev->date_mode,
256 git_log_output_encoding ?
257 git_log_output_encoding: git_commit_encoding);
258 printf("%s\n", out.buf);
259 strbuf_release(&out);
262 static int show_object(const unsigned char *sha1, int show_tag_object,
263 struct rev_info *rev)
265 unsigned long size;
266 enum object_type type;
267 char *buf = read_sha1_file(sha1, &type, &size);
268 int offset = 0;
270 if (!buf)
271 return error("Could not read object %s", sha1_to_hex(sha1));
273 if (show_tag_object)
274 while (offset < size && buf[offset] != '\n') {
275 int new_offset = offset + 1;
276 while (new_offset < size && buf[new_offset++] != '\n')
277 ; /* do nothing */
278 if (!prefixcmp(buf + offset, "tagger "))
279 show_tagger(buf + offset + 7,
280 new_offset - offset - 7, rev);
281 offset = new_offset;
284 if (offset < size)
285 fwrite(buf + offset, size - offset, 1, stdout);
286 free(buf);
287 return 0;
290 static int show_tree_object(const unsigned char *sha1,
291 const char *base, int baselen,
292 const char *pathname, unsigned mode, int stage, void *context)
294 printf("%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
295 return 0;
298 int cmd_show(int argc, const char **argv, const char *prefix)
300 struct rev_info rev;
301 struct object_array_entry *objects;
302 int i, count, ret = 0;
304 git_config(git_log_config, NULL);
306 if (diff_use_color_default == -1)
307 diff_use_color_default = git_use_color_default;
309 init_revisions(&rev, prefix);
310 rev.diff = 1;
311 rev.combine_merges = 1;
312 rev.dense_combined_merges = 1;
313 rev.always_show_header = 1;
314 rev.ignore_merges = 0;
315 rev.no_walk = 1;
316 cmd_log_init(argc, argv, prefix, &rev);
318 count = rev.pending.nr;
319 objects = rev.pending.objects;
320 for (i = 0; i < count && !ret; i++) {
321 struct object *o = objects[i].item;
322 const char *name = objects[i].name;
323 switch (o->type) {
324 case OBJ_BLOB:
325 ret = show_object(o->sha1, 0, NULL);
326 break;
327 case OBJ_TAG: {
328 struct tag *t = (struct tag *)o;
330 printf("%stag %s%s\n",
331 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
332 t->tag,
333 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
334 ret = show_object(o->sha1, 1, &rev);
335 if (ret)
336 break;
337 o = parse_object(t->tagged->sha1);
338 if (!o)
339 ret = error("Could not read object %s",
340 sha1_to_hex(t->tagged->sha1));
341 objects[i].item = o;
342 i--;
343 break;
345 case OBJ_TREE:
346 printf("%stree %s%s\n\n",
347 diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
348 name,
349 diff_get_color_opt(&rev.diffopt, DIFF_RESET));
350 read_tree_recursive((struct tree *)o, "", 0, 0, NULL,
351 show_tree_object, NULL);
352 break;
353 case OBJ_COMMIT:
354 rev.pending.nr = rev.pending.alloc = 0;
355 rev.pending.objects = NULL;
356 add_object_array(o, name, &rev.pending);
357 ret = cmd_log_walk(&rev);
358 break;
359 default:
360 ret = error("Unknown type: %d", o->type);
363 free(objects);
364 return ret;
368 * This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
370 int cmd_log_reflog(int argc, const char **argv, const char *prefix)
372 struct rev_info rev;
374 git_config(git_log_config, NULL);
376 if (diff_use_color_default == -1)
377 diff_use_color_default = git_use_color_default;
379 init_revisions(&rev, prefix);
380 init_reflog_walk(&rev.reflog_info);
381 rev.abbrev_commit = 1;
382 rev.verbose_header = 1;
383 cmd_log_init(argc, argv, prefix, &rev);
386 * This means that we override whatever commit format the user gave
387 * on the cmd line. Sad, but cmd_log_init() currently doesn't
388 * allow us to set a different default.
390 rev.commit_format = CMIT_FMT_ONELINE;
391 rev.use_terminator = 1;
392 rev.always_show_header = 1;
395 * We get called through "git reflog", so unlike the other log
396 * routines, we need to set up our pager manually..
398 setup_pager();
400 return cmd_log_walk(&rev);
403 int cmd_log(int argc, const char **argv, const char *prefix)
405 struct rev_info rev;
407 git_config(git_log_config, NULL);
409 if (diff_use_color_default == -1)
410 diff_use_color_default = git_use_color_default;
412 init_revisions(&rev, prefix);
413 rev.always_show_header = 1;
414 cmd_log_init(argc, argv, prefix, &rev);
415 return cmd_log_walk(&rev);
418 /* format-patch */
419 #define FORMAT_PATCH_NAME_MAX 64
421 static int istitlechar(char c)
423 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
424 (c >= '0' && c <= '9') || c == '.' || c == '_';
427 static const char *fmt_patch_suffix = ".patch";
428 static int numbered = 0;
429 static int auto_number = 1;
431 static char *default_attach = NULL;
433 static char **extra_hdr;
434 static int extra_hdr_nr;
435 static int extra_hdr_alloc;
437 static char **extra_to;
438 static int extra_to_nr;
439 static int extra_to_alloc;
441 static char **extra_cc;
442 static int extra_cc_nr;
443 static int extra_cc_alloc;
445 static void add_header(const char *value)
447 int len = strlen(value);
448 while (len && value[len - 1] == '\n')
449 len--;
450 if (!strncasecmp(value, "to: ", 4)) {
451 ALLOC_GROW(extra_to, extra_to_nr + 1, extra_to_alloc);
452 extra_to[extra_to_nr++] = xstrndup(value + 4, len - 4);
453 return;
455 if (!strncasecmp(value, "cc: ", 4)) {
456 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
457 extra_cc[extra_cc_nr++] = xstrndup(value + 4, len - 4);
458 return;
460 ALLOC_GROW(extra_hdr, extra_hdr_nr + 1, extra_hdr_alloc);
461 extra_hdr[extra_hdr_nr++] = xstrndup(value, len);
464 static int git_format_config(const char *var, const char *value, void *cb)
466 if (!strcmp(var, "format.headers")) {
467 if (!value)
468 die("format.headers without value");
469 add_header(value);
470 return 0;
472 if (!strcmp(var, "format.suffix"))
473 return git_config_string(&fmt_patch_suffix, var, value);
474 if (!strcmp(var, "format.cc")) {
475 if (!value)
476 return config_error_nonbool(var);
477 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
478 extra_cc[extra_cc_nr++] = xstrdup(value);
479 return 0;
481 if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff")) {
482 return 0;
484 if (!strcmp(var, "format.numbered")) {
485 if (value && !strcasecmp(value, "auto")) {
486 auto_number = 1;
487 return 0;
489 numbered = git_config_bool(var, value);
490 auto_number = auto_number && numbered;
491 return 0;
493 if (!strcmp(var, "format.attach")) {
494 if (value && *value)
495 default_attach = xstrdup(value);
496 else
497 default_attach = xstrdup(git_version_string);
498 return 0;
502 return git_log_config(var, value, cb);
506 static const char *get_oneline_for_filename(struct commit *commit,
507 int keep_subject)
509 static char filename[PATH_MAX];
510 char *sol;
511 int len = 0;
512 int suffix_len = strlen(fmt_patch_suffix) + 1;
514 sol = strstr(commit->buffer, "\n\n");
515 if (!sol)
516 filename[0] = '\0';
517 else {
518 int j, space = 0;
520 sol += 2;
521 /* strip [PATCH] or [PATCH blabla] */
522 if (!keep_subject && !prefixcmp(sol, "[PATCH")) {
523 char *eos = strchr(sol + 6, ']');
524 if (eos) {
525 while (isspace(*eos))
526 eos++;
527 sol = eos;
531 for (j = 0;
532 j < FORMAT_PATCH_NAME_MAX - suffix_len - 5 &&
533 len < sizeof(filename) - suffix_len &&
534 sol[j] && sol[j] != '\n';
535 j++) {
536 if (istitlechar(sol[j])) {
537 if (space) {
538 filename[len++] = '-';
539 space = 0;
541 filename[len++] = sol[j];
542 if (sol[j] == '.')
543 while (sol[j + 1] == '.')
544 j++;
545 } else
546 space = 1;
548 while (filename[len - 1] == '.'
549 || filename[len - 1] == '-')
550 len--;
551 filename[len] = '\0';
553 return filename;
556 static FILE *realstdout = NULL;
557 static const char *output_directory = NULL;
558 static int outdir_offset;
560 static int reopen_stdout(const char *oneline, int nr, int total)
562 char filename[PATH_MAX];
563 int len = 0;
564 int suffix_len = strlen(fmt_patch_suffix) + 1;
566 if (output_directory) {
567 len = snprintf(filename, sizeof(filename), "%s",
568 output_directory);
569 if (len >=
570 sizeof(filename) - FORMAT_PATCH_NAME_MAX - suffix_len)
571 return error("name of output directory is too long");
572 if (filename[len - 1] != '/')
573 filename[len++] = '/';
576 if (!oneline)
577 len += sprintf(filename + len, "%d", nr);
578 else {
579 len += sprintf(filename + len, "%04d-", nr);
580 len += snprintf(filename + len, sizeof(filename) - len - 1
581 - suffix_len, "%s", oneline);
582 strcpy(filename + len, fmt_patch_suffix);
585 fprintf(realstdout, "%s\n", filename + outdir_offset);
586 if (freopen(filename, "w", stdout) == NULL)
587 return error("Cannot open patch file %s",filename);
589 return 0;
592 static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids, const char *prefix)
594 struct rev_info check_rev;
595 struct commit *commit;
596 struct object *o1, *o2;
597 unsigned flags1, flags2;
599 if (rev->pending.nr != 2)
600 die("Need exactly one range.");
602 o1 = rev->pending.objects[0].item;
603 flags1 = o1->flags;
604 o2 = rev->pending.objects[1].item;
605 flags2 = o2->flags;
607 if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
608 die("Not a range.");
610 init_patch_ids(ids);
612 /* given a range a..b get all patch ids for b..a */
613 init_revisions(&check_rev, prefix);
614 o1->flags ^= UNINTERESTING;
615 o2->flags ^= UNINTERESTING;
616 add_pending_object(&check_rev, o1, "o1");
617 add_pending_object(&check_rev, o2, "o2");
618 if (prepare_revision_walk(&check_rev))
619 die("revision walk setup failed");
621 while ((commit = get_revision(&check_rev)) != NULL) {
622 /* ignore merges */
623 if (commit->parents && commit->parents->next)
624 continue;
626 add_commit_patch_id(commit, ids);
629 /* reset for next revision walk */
630 clear_commit_marks((struct commit *)o1,
631 SEEN | UNINTERESTING | SHOWN | ADDED);
632 clear_commit_marks((struct commit *)o2,
633 SEEN | UNINTERESTING | SHOWN | ADDED);
634 o1->flags = flags1;
635 o2->flags = flags2;
638 static void gen_message_id(struct rev_info *info, char *base)
640 const char *committer = git_committer_info(IDENT_WARN_ON_NO_NAME);
641 const char *email_start = strrchr(committer, '<');
642 const char *email_end = strrchr(committer, '>');
643 struct strbuf buf = STRBUF_INIT;
644 if (!email_start || !email_end || email_start > email_end - 1)
645 die("Could not extract email from committer identity.");
646 strbuf_addf(&buf, "%s.%lu.git.%.*s", base,
647 (unsigned long) time(NULL),
648 (int)(email_end - email_start - 1), email_start + 1);
649 info->message_id = strbuf_detach(&buf, NULL);
652 static void make_cover_letter(struct rev_info *rev, int use_stdout,
653 int numbered, int numbered_files,
654 struct commit *origin,
655 int nr, struct commit **list, struct commit *head)
657 const char *committer;
658 char *head_sha1;
659 const char *subject_start = NULL;
660 const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n";
661 const char *msg;
662 const char *extra_headers = rev->extra_headers;
663 struct shortlog log;
664 struct strbuf sb = STRBUF_INIT;
665 int i;
666 const char *encoding = "utf-8";
667 struct diff_options opts;
668 int need_8bit_cte = 0;
670 if (rev->commit_format != CMIT_FMT_EMAIL)
671 die("Cover letter needs email format");
673 if (!use_stdout && reopen_stdout(numbered_files ?
674 NULL : "cover-letter", 0, rev->total))
675 return;
677 head_sha1 = sha1_to_hex(head->object.sha1);
679 log_write_email_headers(rev, head_sha1, &subject_start, &extra_headers,
680 &need_8bit_cte);
682 committer = git_committer_info(0);
684 msg = body;
685 pp_user_info(NULL, CMIT_FMT_EMAIL, &sb, committer, DATE_RFC2822,
686 encoding);
687 pp_title_line(CMIT_FMT_EMAIL, &msg, &sb, subject_start, extra_headers,
688 encoding, need_8bit_cte);
689 pp_remainder(CMIT_FMT_EMAIL, &msg, &sb, 0);
690 printf("%s\n", sb.buf);
692 strbuf_release(&sb);
694 shortlog_init(&log);
695 log.wrap_lines = 1;
696 log.wrap = 72;
697 log.in1 = 2;
698 log.in2 = 4;
699 for (i = 0; i < nr; i++)
700 shortlog_add_commit(&log, list[i]);
702 shortlog_output(&log);
705 * We can only do diffstat with a unique reference point
707 if (!origin)
708 return;
710 memcpy(&opts, &rev->diffopt, sizeof(opts));
711 opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
713 diff_setup_done(&opts);
715 diff_tree_sha1(origin->tree->object.sha1,
716 head->tree->object.sha1,
717 "", &opts);
718 diffcore_std(&opts);
719 diff_flush(&opts);
721 printf("\n");
724 static const char *clean_message_id(const char *msg_id)
726 char ch;
727 const char *a, *z, *m;
729 m = msg_id;
730 while ((ch = *m) && (isspace(ch) || (ch == '<')))
731 m++;
732 a = m;
733 z = NULL;
734 while ((ch = *m)) {
735 if (!isspace(ch) && (ch != '>'))
736 z = m;
737 m++;
739 if (!z)
740 die("insane in-reply-to: %s", msg_id);
741 if (++z == m)
742 return a;
743 return xmemdupz(a, z - a);
746 static const char *set_outdir(const char *prefix, const char *output_directory)
748 if (output_directory && is_absolute_path(output_directory))
749 return output_directory;
751 if (!prefix || !*prefix) {
752 if (output_directory)
753 return output_directory;
754 /* The user did not explicitly ask for "./" */
755 outdir_offset = 2;
756 return "./";
759 outdir_offset = strlen(prefix);
760 if (!output_directory)
761 return prefix;
763 return xstrdup(prefix_filename(prefix, outdir_offset,
764 output_directory));
767 int cmd_format_patch(int argc, const char **argv, const char *prefix)
769 struct commit *commit;
770 struct commit **list = NULL;
771 struct rev_info rev;
772 int nr = 0, total, i, j;
773 int use_stdout = 0;
774 int start_number = -1;
775 int keep_subject = 0;
776 int numbered_files = 0; /* _just_ numbers */
777 int subject_prefix = 0;
778 int ignore_if_in_upstream = 0;
779 int thread = 0;
780 int cover_letter = 0;
781 int boundary_count = 0;
782 int no_binary_diff = 0;
783 struct commit *origin = NULL, *head = NULL;
784 const char *in_reply_to = NULL;
785 struct patch_ids ids;
786 char *add_signoff = NULL;
787 struct strbuf buf = STRBUF_INIT;
789 git_config(git_format_config, NULL);
790 init_revisions(&rev, prefix);
791 rev.commit_format = CMIT_FMT_EMAIL;
792 rev.verbose_header = 1;
793 rev.diff = 1;
794 rev.combine_merges = 0;
795 rev.ignore_merges = 1;
796 DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
798 rev.subject_prefix = fmt_patch_subject_prefix;
800 if (default_attach) {
801 rev.mime_boundary = default_attach;
802 rev.no_inline = 1;
806 * Parse the arguments before setup_revisions(), or something
807 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
808 * possibly a valid SHA1.
810 for (i = 1, j = 1; i < argc; i++) {
811 if (!strcmp(argv[i], "--stdout"))
812 use_stdout = 1;
813 else if (!strcmp(argv[i], "-n") ||
814 !strcmp(argv[i], "--numbered"))
815 numbered = 1;
816 else if (!strcmp(argv[i], "-N") ||
817 !strcmp(argv[i], "--no-numbered")) {
818 numbered = 0;
819 auto_number = 0;
821 else if (!prefixcmp(argv[i], "--start-number="))
822 start_number = strtol(argv[i] + 15, NULL, 10);
823 else if (!strcmp(argv[i], "--numbered-files"))
824 numbered_files = 1;
825 else if (!strcmp(argv[i], "--start-number")) {
826 i++;
827 if (i == argc)
828 die("Need a number for --start-number");
829 start_number = strtol(argv[i], NULL, 10);
831 else if (!prefixcmp(argv[i], "--cc=")) {
832 ALLOC_GROW(extra_cc, extra_cc_nr + 1, extra_cc_alloc);
833 extra_cc[extra_cc_nr++] = xstrdup(argv[i] + 5);
835 else if (!strcmp(argv[i], "-k") ||
836 !strcmp(argv[i], "--keep-subject")) {
837 keep_subject = 1;
838 rev.total = -1;
840 else if (!strcmp(argv[i], "--output-directory") ||
841 !strcmp(argv[i], "-o")) {
842 i++;
843 if (argc <= i)
844 die("Which directory?");
845 if (output_directory)
846 die("Two output directories?");
847 output_directory = argv[i];
849 else if (!strcmp(argv[i], "--signoff") ||
850 !strcmp(argv[i], "-s")) {
851 const char *committer;
852 const char *endpos;
853 committer = git_committer_info(IDENT_ERROR_ON_NO_NAME);
854 endpos = strchr(committer, '>');
855 if (!endpos)
856 die("bogus committer info %s", committer);
857 add_signoff = xmemdupz(committer, endpos - committer + 1);
859 else if (!strcmp(argv[i], "--attach")) {
860 rev.mime_boundary = git_version_string;
861 rev.no_inline = 1;
863 else if (!prefixcmp(argv[i], "--attach=")) {
864 rev.mime_boundary = argv[i] + 9;
865 rev.no_inline = 1;
867 else if (!strcmp(argv[i], "--no-attach")) {
868 rev.mime_boundary = NULL;
869 rev.no_inline = 0;
871 else if (!strcmp(argv[i], "--inline")) {
872 rev.mime_boundary = git_version_string;
873 rev.no_inline = 0;
875 else if (!prefixcmp(argv[i], "--inline=")) {
876 rev.mime_boundary = argv[i] + 9;
877 rev.no_inline = 0;
879 else if (!strcmp(argv[i], "--ignore-if-in-upstream"))
880 ignore_if_in_upstream = 1;
881 else if (!strcmp(argv[i], "--thread"))
882 thread = 1;
883 else if (!prefixcmp(argv[i], "--in-reply-to="))
884 in_reply_to = argv[i] + 14;
885 else if (!strcmp(argv[i], "--in-reply-to")) {
886 i++;
887 if (i == argc)
888 die("Need a Message-Id for --in-reply-to");
889 in_reply_to = argv[i];
890 } else if (!prefixcmp(argv[i], "--subject-prefix=")) {
891 subject_prefix = 1;
892 rev.subject_prefix = argv[i] + 17;
893 } else if (!prefixcmp(argv[i], "--suffix="))
894 fmt_patch_suffix = argv[i] + 9;
895 else if (!strcmp(argv[i], "--cover-letter"))
896 cover_letter = 1;
897 else if (!strcmp(argv[i], "--no-binary"))
898 no_binary_diff = 1;
899 else
900 argv[j++] = argv[i];
902 argc = j;
904 for (i = 0; i < extra_hdr_nr; i++) {
905 strbuf_addstr(&buf, extra_hdr[i]);
906 strbuf_addch(&buf, '\n');
909 if (extra_to_nr)
910 strbuf_addstr(&buf, "To: ");
911 for (i = 0; i < extra_to_nr; i++) {
912 if (i)
913 strbuf_addstr(&buf, " ");
914 strbuf_addstr(&buf, extra_to[i]);
915 if (i + 1 < extra_to_nr)
916 strbuf_addch(&buf, ',');
917 strbuf_addch(&buf, '\n');
920 if (extra_cc_nr)
921 strbuf_addstr(&buf, "Cc: ");
922 for (i = 0; i < extra_cc_nr; i++) {
923 if (i)
924 strbuf_addstr(&buf, " ");
925 strbuf_addstr(&buf, extra_cc[i]);
926 if (i + 1 < extra_cc_nr)
927 strbuf_addch(&buf, ',');
928 strbuf_addch(&buf, '\n');
931 rev.extra_headers = strbuf_detach(&buf, 0);
933 if (start_number < 0)
934 start_number = 1;
935 if (numbered && keep_subject)
936 die ("-n and -k are mutually exclusive.");
937 if (keep_subject && subject_prefix)
938 die ("--subject-prefix and -k are mutually exclusive.");
939 if (numbered_files && use_stdout)
940 die ("--numbered-files and --stdout are mutually exclusive.");
942 argc = setup_revisions(argc, argv, &rev, "HEAD");
943 if (argc > 1)
944 die ("unrecognized argument: %s", argv[1]);
946 if (!rev.diffopt.output_format
947 || rev.diffopt.output_format == DIFF_FORMAT_PATCH)
948 rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_PATCH;
950 if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
951 DIFF_OPT_SET(&rev.diffopt, BINARY);
953 if (!use_stdout)
954 output_directory = set_outdir(prefix, output_directory);
956 if (output_directory) {
957 if (use_stdout)
958 die("standard output, or directory, which one?");
959 if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
960 die("Could not create directory %s",
961 output_directory);
964 if (rev.pending.nr == 1) {
965 if (rev.max_count < 0 && !rev.show_root_diff) {
967 * This is traditional behaviour of "git format-patch
968 * origin" that prepares what the origin side still
969 * does not have.
971 rev.pending.objects[0].item->flags |= UNINTERESTING;
972 add_head_to_pending(&rev);
975 * Otherwise, it is "format-patch -22 HEAD", and/or
976 * "format-patch --root HEAD". The user wants
977 * get_revision() to do the usual traversal.
982 * We cannot move this anywhere earlier because we do want to
983 * know if --root was given explicitly from the comand line.
985 rev.show_root_diff = 1;
987 if (cover_letter) {
988 /* remember the range */
989 int i;
990 for (i = 0; i < rev.pending.nr; i++) {
991 struct object *o = rev.pending.objects[i].item;
992 if (!(o->flags & UNINTERESTING))
993 head = (struct commit *)o;
995 /* We can't generate a cover letter without any patches */
996 if (!head)
997 return 0;
1000 if (ignore_if_in_upstream)
1001 get_patch_ids(&rev, &ids, prefix);
1003 if (!use_stdout)
1004 realstdout = xfdopen(xdup(1), "w");
1006 if (prepare_revision_walk(&rev))
1007 die("revision walk setup failed");
1008 rev.boundary = 1;
1009 while ((commit = get_revision(&rev)) != NULL) {
1010 if (commit->object.flags & BOUNDARY) {
1011 boundary_count++;
1012 origin = (boundary_count == 1) ? commit : NULL;
1013 continue;
1016 /* ignore merges */
1017 if (commit->parents && commit->parents->next)
1018 continue;
1020 if (ignore_if_in_upstream &&
1021 has_commit_patch_id(commit, &ids))
1022 continue;
1024 nr++;
1025 list = xrealloc(list, nr * sizeof(list[0]));
1026 list[nr - 1] = commit;
1028 total = nr;
1029 if (!keep_subject && auto_number && total > 1)
1030 numbered = 1;
1031 if (numbered)
1032 rev.total = total + start_number - 1;
1033 if (in_reply_to)
1034 rev.ref_message_id = clean_message_id(in_reply_to);
1035 if (cover_letter) {
1036 if (thread)
1037 gen_message_id(&rev, "cover");
1038 make_cover_letter(&rev, use_stdout, numbered, numbered_files,
1039 origin, nr, list, head);
1040 total++;
1041 start_number--;
1043 rev.add_signoff = add_signoff;
1044 while (0 <= --nr) {
1045 int shown;
1046 commit = list[nr];
1047 rev.nr = total - nr + (start_number - 1);
1048 /* Make the second and subsequent mails replies to the first */
1049 if (thread) {
1050 /* Have we already had a message ID? */
1051 if (rev.message_id) {
1053 * If we've got the ID to be a reply
1054 * to, discard the current ID;
1055 * otherwise, make everything a reply
1056 * to that.
1058 if (rev.ref_message_id)
1059 free(rev.message_id);
1060 else
1061 rev.ref_message_id = rev.message_id;
1063 gen_message_id(&rev, sha1_to_hex(commit->object.sha1));
1065 if (!use_stdout && reopen_stdout(numbered_files ? NULL :
1066 get_oneline_for_filename(commit, keep_subject),
1067 rev.nr, rev.total))
1068 die("Failed to create output files");
1069 shown = log_tree_commit(&rev, commit);
1070 free(commit->buffer);
1071 commit->buffer = NULL;
1073 /* We put one extra blank line between formatted
1074 * patches and this flag is used by log-tree code
1075 * to see if it needs to emit a LF before showing
1076 * the log; when using one file per patch, we do
1077 * not want the extra blank line.
1079 if (!use_stdout)
1080 rev.shown_one = 0;
1081 if (shown) {
1082 if (rev.mime_boundary)
1083 printf("\n--%s%s--\n\n\n",
1084 mime_boundary_leader,
1085 rev.mime_boundary);
1086 else
1087 printf("-- \n%s\n\n", git_version_string);
1089 if (!use_stdout)
1090 fclose(stdout);
1092 free(list);
1093 if (ignore_if_in_upstream)
1094 free_patch_ids(&ids);
1095 return 0;
1098 static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
1100 unsigned char sha1[20];
1101 if (get_sha1(arg, sha1) == 0) {
1102 struct commit *commit = lookup_commit_reference(sha1);
1103 if (commit) {
1104 commit->object.flags |= flags;
1105 add_pending_object(revs, &commit->object, arg);
1106 return 0;
1109 return -1;
1112 static const char cherry_usage[] =
1113 "git cherry [-v] [<upstream> [<head> [<limit>]]]";
1114 int cmd_cherry(int argc, const char **argv, const char *prefix)
1116 struct rev_info revs;
1117 struct patch_ids ids;
1118 struct commit *commit;
1119 struct commit_list *list = NULL;
1120 struct branch *current_branch;
1121 const char *upstream;
1122 const char *head = "HEAD";
1123 const char *limit = NULL;
1124 int verbose = 0;
1126 if (argc > 1 && !strcmp(argv[1], "-v")) {
1127 verbose = 1;
1128 argc--;
1129 argv++;
1132 switch (argc) {
1133 case 4:
1134 limit = argv[3];
1135 /* FALLTHROUGH */
1136 case 3:
1137 head = argv[2];
1138 /* FALLTHROUGH */
1139 case 2:
1140 upstream = argv[1];
1141 break;
1142 default:
1143 current_branch = branch_get(NULL);
1144 if (!current_branch || !current_branch->merge
1145 || !current_branch->merge[0]
1146 || !current_branch->merge[0]->dst) {
1147 fprintf(stderr, "Could not find a tracked"
1148 " remote branch, please"
1149 " specify <upstream> manually.\n");
1150 usage(cherry_usage);
1153 upstream = current_branch->merge[0]->dst;
1156 init_revisions(&revs, prefix);
1157 revs.diff = 1;
1158 revs.combine_merges = 0;
1159 revs.ignore_merges = 1;
1160 DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
1162 if (add_pending_commit(head, &revs, 0))
1163 die("Unknown commit %s", head);
1164 if (add_pending_commit(upstream, &revs, UNINTERESTING))
1165 die("Unknown commit %s", upstream);
1167 /* Don't say anything if head and upstream are the same. */
1168 if (revs.pending.nr == 2) {
1169 struct object_array_entry *o = revs.pending.objects;
1170 if (hashcmp(o[0].item->sha1, o[1].item->sha1) == 0)
1171 return 0;
1174 get_patch_ids(&revs, &ids, prefix);
1176 if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
1177 die("Unknown commit %s", limit);
1179 /* reverse the list of commits */
1180 if (prepare_revision_walk(&revs))
1181 die("revision walk setup failed");
1182 while ((commit = get_revision(&revs)) != NULL) {
1183 /* ignore merges */
1184 if (commit->parents && commit->parents->next)
1185 continue;
1187 commit_list_insert(commit, &list);
1190 while (list) {
1191 char sign = '+';
1193 commit = list->item;
1194 if (has_commit_patch_id(commit, &ids))
1195 sign = '-';
1197 if (verbose) {
1198 struct strbuf buf = STRBUF_INIT;
1199 pretty_print_commit(CMIT_FMT_ONELINE, commit,
1200 &buf, 0, NULL, NULL, 0, 0);
1201 printf("%c %s %s\n", sign,
1202 sha1_to_hex(commit->object.sha1), buf.buf);
1203 strbuf_release(&buf);
1205 else {
1206 printf("%c %s\n", sign,
1207 sha1_to_hex(commit->object.sha1));
1210 list = list->next;
1213 free_patch_ids(&ids);
1214 return 0;