-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathcommit.c
1593 lines (1398 loc) · 45.4 KB
/
commit.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Builtin "git commit"
*
* Copyright (c) 2007 Kristian Høgsberg <[email protected]>
* Based on git-commit.sh by Junio C Hamano and Linus Torvalds
*/
#include "cache.h"
#include "cache-tree.h"
#include "color.h"
#include "dir.h"
#include "builtin.h"
#include "diff.h"
#include "diffcore.h"
#include "commit.h"
#include "revision.h"
#include "wt-status.h"
#include "run-command.h"
#include "refs.h"
#include "log-tree.h"
#include "strbuf.h"
#include "utf8.h"
#include "parse-options.h"
#include "string-list.h"
#include "rerere.h"
#include "unpack-trees.h"
#include "quote.h"
#include "submodule.h"
#include "gpg-interface.h"
#include "column.h"
#include "sequencer.h"
static const char * const builtin_commit_usage[] = {
N_("git commit [options] [--] <filepattern>..."),
NULL
};
static const char * const builtin_status_usage[] = {
N_("git status [options] [--] <filepattern>..."),
NULL
};
static const char implicit_ident_advice[] =
N_("Your name and email address were configured automatically based\n"
"on your username and hostname. Please check that they are accurate.\n"
"You can suppress this message by setting them explicitly:\n"
"\n"
" git config --global user.name \"Your Name\"\n"
" git config --global user.email [email protected]\n"
"\n"
"After doing this, you may fix the identity used for this commit with:\n"
"\n"
" git commit --amend --reset-author\n");
static const char empty_amend_advice[] =
N_("You asked to amend the most recent commit, but doing so would make\n"
"it empty. You can repeat your command with --allow-empty, or you can\n"
"remove the commit entirely with \"git reset HEAD^\".\n");
static const char empty_cherry_pick_advice[] =
N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\n"
"If you wish to commit it anyway, use:\n"
"\n"
" git commit --allow-empty\n"
"\n"
"Otherwise, please use 'git reset'\n");
static const char *use_message_buffer;
static const char commit_editmsg[] = "COMMIT_EDITMSG";
static struct lock_file index_lock; /* real index */
static struct lock_file false_lock; /* used only for partial commits */
static enum {
COMMIT_AS_IS = 1,
COMMIT_NORMAL,
COMMIT_PARTIAL
} commit_style;
static const char *logfile, *force_author;
static const char *template_file;
/*
* The _message variables are commit names from which to take
* the commit message and/or authorship.
*/
static const char *author_message, *author_message_buffer;
static char *edit_message, *use_message;
static char *fixup_message, *squash_message;
static int all, also, interactive, patch_interactive, only, amend, signoff;
static int edit_flag = -1; /* unspecified */
static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
static int no_post_rewrite, allow_empty_message;
static char *untracked_files_arg, *force_date, *ignore_submodule_arg;
static char *sign_commit;
/*
* The default commit message cleanup mode will remove the lines
* beginning with # (shell comments) and leading and trailing
* whitespaces (empty lines or containing only whitespaces)
* if editor is used, and only the whitespaces if the message
* is specified explicitly.
*/
static enum {
CLEANUP_SPACE,
CLEANUP_NONE,
CLEANUP_ALL
} cleanup_mode;
static char *cleanup_arg;
static enum commit_whence whence;
static int use_editor = 1, include_status = 1;
static int show_ignored_in_status;
static const char *only_include_assumed;
static struct strbuf message = STRBUF_INIT;
static enum {
STATUS_FORMAT_LONG,
STATUS_FORMAT_SHORT,
STATUS_FORMAT_PORCELAIN
} status_format = STATUS_FORMAT_LONG;
static int opt_parse_m(const struct option *opt, const char *arg, int unset)
{
struct strbuf *buf = opt->value;
if (unset)
strbuf_setlen(buf, 0);
else {
strbuf_addstr(buf, arg);
strbuf_addstr(buf, "\n\n");
}
return 0;
}
static void determine_whence(struct wt_status *s)
{
if (file_exists(git_path("MERGE_HEAD")))
whence = FROM_MERGE;
else if (file_exists(git_path("CHERRY_PICK_HEAD")))
whence = FROM_CHERRY_PICK;
else
whence = FROM_COMMIT;
if (s)
s->whence = whence;
}
static void rollback_index_files(void)
{
switch (commit_style) {
case COMMIT_AS_IS:
break; /* nothing to do */
case COMMIT_NORMAL:
rollback_lock_file(&index_lock);
break;
case COMMIT_PARTIAL:
rollback_lock_file(&index_lock);
rollback_lock_file(&false_lock);
break;
}
}
static int commit_index_files(void)
{
int err = 0;
switch (commit_style) {
case COMMIT_AS_IS:
break; /* nothing to do */
case COMMIT_NORMAL:
err = commit_lock_file(&index_lock);
break;
case COMMIT_PARTIAL:
err = commit_lock_file(&index_lock);
rollback_lock_file(&false_lock);
break;
}
return err;
}
/*
* Take a union of paths in the index and the named tree (typically, "HEAD"),
* and return the paths that match the given pattern in list.
*/
static int list_paths(struct string_list *list, const char *with_tree,
const char *prefix, const char **pattern)
{
int i;
char *m;
if (!pattern)
return 0;
for (i = 0; pattern[i]; i++)
;
m = xcalloc(1, i);
if (with_tree) {
char *max_prefix = common_prefix(pattern);
overlay_tree_on_cache(with_tree, max_prefix ? max_prefix : prefix);
free(max_prefix);
}
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
struct string_list_item *item;
if (ce->ce_flags & CE_UPDATE)
continue;
if (!match_pathspec(pattern, ce->name, ce_namelen(ce), 0, m))
continue;
item = string_list_insert(list, ce->name);
if (ce_skip_worktree(ce))
item->util = item; /* better a valid pointer than a fake one */
}
return report_path_error(m, pattern, prefix);
}
static void add_remove_files(struct string_list *list)
{
int i;
for (i = 0; i < list->nr; i++) {
struct stat st;
struct string_list_item *p = &(list->items[i]);
/* p->util is skip-worktree */
if (p->util)
continue;
if (!lstat(p->string, &st)) {
if (add_to_cache(p->string, &st, 0))
die(_("updating files failed"));
} else
remove_file_from_cache(p->string);
}
}
static void create_base_index(const struct commit *current_head)
{
struct tree *tree;
struct unpack_trees_options opts;
struct tree_desc t;
if (!current_head) {
discard_cache();
return;
}
memset(&opts, 0, sizeof(opts));
opts.head_idx = 1;
opts.index_only = 1;
opts.merge = 1;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.fn = oneway_merge;
tree = parse_tree_indirect(current_head->object.sha1);
if (!tree)
die(_("failed to unpack HEAD tree object"));
parse_tree(tree);
init_tree_desc(&t, tree->buffer, tree->size);
if (unpack_trees(1, &t, &opts))
exit(128); /* We've already reported the error, finish dying */
}
static void refresh_cache_or_die(int refresh_flags)
{
/*
* refresh_flags contains REFRESH_QUIET, so the only errors
* are for unmerged entries.
*/
if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
die_resolve_conflict("commit");
}
static char *prepare_index(int argc, const char **argv, const char *prefix,
const struct commit *current_head, int is_status)
{
int fd;
struct string_list partial;
const char **pathspec = NULL;
char *old_index_env = NULL;
int refresh_flags = REFRESH_QUIET;
if (is_status)
refresh_flags |= REFRESH_UNMERGED;
if (*argv)
pathspec = get_pathspec(prefix, argv);
if (read_cache_preload(pathspec) < 0)
die(_("index file corrupt"));
if (interactive) {
fd = hold_locked_index(&index_lock, 1);
refresh_cache_or_die(refresh_flags);
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&index_lock))
die(_("unable to create temporary index"));
old_index_env = getenv(INDEX_ENVIRONMENT);
setenv(INDEX_ENVIRONMENT, index_lock.filename, 1);
if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
die(_("interactive add failed"));
if (old_index_env && *old_index_env)
setenv(INDEX_ENVIRONMENT, old_index_env, 1);
else
unsetenv(INDEX_ENVIRONMENT);
discard_cache();
read_cache_from(index_lock.filename);
commit_style = COMMIT_NORMAL;
return index_lock.filename;
}
/*
* Non partial, non as-is commit.
*
* (1) get the real index;
* (2) update the_index as necessary;
* (3) write the_index out to the real index (still locked);
* (4) return the name of the locked index file.
*
* The caller should run hooks on the locked real index, and
* (A) if all goes well, commit the real index;
* (B) on failure, rollback the real index.
*/
if (all || (also && pathspec && *pathspec)) {
fd = hold_locked_index(&index_lock, 1);
add_files_to_cache(also ? prefix : NULL, pathspec, 0);
refresh_cache_or_die(refresh_flags);
update_main_cache_tree(WRITE_TREE_SILENT);
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&index_lock))
die(_("unable to write new_index file"));
commit_style = COMMIT_NORMAL;
return index_lock.filename;
}
/*
* As-is commit.
*
* (1) return the name of the real index file.
*
* The caller should run hooks on the real index,
* and create commit from the_index.
* We still need to refresh the index here.
*/
if (!only && (!pathspec || !*pathspec)) {
fd = hold_locked_index(&index_lock, 1);
refresh_cache_or_die(refresh_flags);
if (active_cache_changed) {
update_main_cache_tree(WRITE_TREE_SILENT);
if (write_cache(fd, active_cache, active_nr) ||
commit_locked_index(&index_lock))
die(_("unable to write new_index file"));
} else {
rollback_lock_file(&index_lock);
}
commit_style = COMMIT_AS_IS;
return get_index_file();
}
/*
* A partial commit.
*
* (0) find the set of affected paths;
* (1) get lock on the real index file;
* (2) update the_index with the given paths;
* (3) write the_index out to the real index (still locked);
* (4) get lock on the false index file;
* (5) reset the_index from HEAD;
* (6) update the_index the same way as (2);
* (7) write the_index out to the false index file;
* (8) return the name of the false index file (still locked);
*
* The caller should run hooks on the locked false index, and
* create commit from it. Then
* (A) if all goes well, commit the real index;
* (B) on failure, rollback the real index;
* In either case, rollback the false index.
*/
commit_style = COMMIT_PARTIAL;
if (whence != FROM_COMMIT) {
if (whence == FROM_MERGE)
die(_("cannot do a partial commit during a merge."));
else if (whence == FROM_CHERRY_PICK)
die(_("cannot do a partial commit during a cherry-pick."));
}
memset(&partial, 0, sizeof(partial));
partial.strdup_strings = 1;
if (list_paths(&partial, !current_head ? NULL : "HEAD", prefix, pathspec))
exit(1);
discard_cache();
if (read_cache() < 0)
die(_("cannot read the index"));
fd = hold_locked_index(&index_lock, 1);
add_remove_files(&partial);
refresh_cache(REFRESH_QUIET);
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&index_lock))
die(_("unable to write new_index file"));
fd = hold_lock_file_for_update(&false_lock,
git_path("next-index-%"PRIuMAX,
(uintmax_t) getpid()),
LOCK_DIE_ON_ERROR);
create_base_index(current_head);
add_remove_files(&partial);
refresh_cache(REFRESH_QUIET);
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&false_lock))
die(_("unable to write temporary index file"));
discard_cache();
read_cache_from(false_lock.filename);
return false_lock.filename;
}
static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
struct wt_status *s)
{
unsigned char sha1[20];
if (s->relative_paths)
s->prefix = prefix;
if (amend) {
s->amend = 1;
s->reference = "HEAD^1";
}
s->verbose = verbose;
s->index_file = index_file;
s->fp = fp;
s->nowarn = nowarn;
s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
wt_status_collect(s);
switch (status_format) {
case STATUS_FORMAT_SHORT:
wt_shortstatus_print(s);
break;
case STATUS_FORMAT_PORCELAIN:
wt_porcelain_print(s);
break;
case STATUS_FORMAT_LONG:
wt_status_print(s);
break;
}
return s->commitable;
}
static int is_a_merge(const struct commit *current_head)
{
return !!(current_head->parents && current_head->parents->next);
}
static void export_one(const char *var, const char *s, const char *e, int hack)
{
struct strbuf buf = STRBUF_INIT;
if (hack)
strbuf_addch(&buf, hack);
strbuf_addf(&buf, "%.*s", (int)(e - s), s);
setenv(var, buf.buf, 1);
strbuf_release(&buf);
}
static int sane_ident_split(struct ident_split *person)
{
if (!person->name_begin || !person->name_end ||
person->name_begin == person->name_end)
return 0; /* no human readable name */
if (!person->mail_begin || !person->mail_end ||
person->mail_begin == person->mail_end)
return 0; /* no usable mail */
if (!person->date_begin || !person->date_end ||
!person->tz_begin || !person->tz_end)
return 0;
return 1;
}
static void determine_author_info(struct strbuf *author_ident)
{
char *name, *email, *date;
struct ident_split author;
name = getenv("GIT_AUTHOR_NAME");
email = getenv("GIT_AUTHOR_EMAIL");
date = getenv("GIT_AUTHOR_DATE");
if (author_message) {
const char *a, *lb, *rb, *eol;
size_t len;
a = strstr(author_message_buffer, "\nauthor ");
if (!a)
die(_("invalid commit: %s"), author_message);
lb = strchrnul(a + strlen("\nauthor "), '<');
rb = strchrnul(lb, '>');
eol = strchrnul(rb, '\n');
if (!*lb || !*rb || !*eol)
die(_("invalid commit: %s"), author_message);
if (lb == a + strlen("\nauthor "))
/* \nauthor <[email protected]> */
name = xcalloc(1, 1);
else
name = xmemdupz(a + strlen("\nauthor "),
(lb - strlen(" ") -
(a + strlen("\nauthor "))));
email = xmemdupz(lb + strlen("<"), rb - (lb + strlen("<")));
date = xmemdupz(rb + strlen("> "), eol - (rb + strlen("> ")));
len = eol - (rb + strlen("> "));
date = xmalloc(len + 2);
*date = '@';
memcpy(date + 1, rb + strlen("> "), len);
date[len + 1] = '\0';
}
if (force_author) {
const char *lb = strstr(force_author, " <");
const char *rb = strchr(force_author, '>');
if (!lb || !rb)
die(_("malformed --author parameter"));
name = xstrndup(force_author, lb - force_author);
email = xstrndup(lb + 2, rb - (lb + 2));
}
if (force_date)
date = force_date;
strbuf_addstr(author_ident, fmt_ident(name, email, date, IDENT_STRICT));
if (!split_ident_line(&author, author_ident->buf, author_ident->len) &&
sane_ident_split(&author)) {
export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
}
}
static char *cut_ident_timestamp_part(char *string)
{
char *ket = strrchr(string, '>');
if (!ket || ket[1] != ' ')
die(_("Malformed ident string: '%s'"), string);
*++ket = '\0';
return ket;
}
static int prepare_to_commit(const char *index_file, const char *prefix,
struct commit *current_head,
struct wt_status *s,
struct strbuf *author_ident)
{
struct stat statbuf;
struct strbuf committer_ident = STRBUF_INIT;
int commitable, saved_color_setting;
struct strbuf sb = STRBUF_INIT;
char *buffer;
const char *hook_arg1 = NULL;
const char *hook_arg2 = NULL;
int ident_shown = 0;
int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
/* This checks and barfs if author is badly specified */
determine_author_info(author_ident);
if (!no_verify && run_hook(index_file, "pre-commit", NULL))
return 0;
if (squash_message) {
/*
* Insert the proper subject line before other commit
* message options add their content.
*/
if (use_message && !strcmp(use_message, squash_message))
strbuf_addstr(&sb, "squash! ");
else {
struct pretty_print_context ctx = {0};
struct commit *c;
c = lookup_commit_reference_by_name(squash_message);
if (!c)
die(_("could not lookup commit %s"), squash_message);
ctx.output_encoding = get_commit_output_encoding();
format_commit_message(c, "squash! %s\n\n", &sb,
&ctx);
}
}
if (message.len) {
strbuf_addbuf(&sb, &message);
hook_arg1 = "message";
} else if (logfile && !strcmp(logfile, "-")) {
if (isatty(0))
fprintf(stderr, _("(reading log message from standard input)\n"));
if (strbuf_read(&sb, 0, 0) < 0)
die_errno(_("could not read log from standard input"));
hook_arg1 = "message";
} else if (logfile) {
if (strbuf_read_file(&sb, logfile, 0) < 0)
die_errno(_("could not read log file '%s'"),
logfile);
hook_arg1 = "message";
} else if (use_message) {
buffer = strstr(use_message_buffer, "\n\n");
if (!use_editor && (!buffer || buffer[2] == '\0'))
die(_("commit has empty message"));
strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
hook_arg1 = "commit";
hook_arg2 = use_message;
} else if (fixup_message) {
struct pretty_print_context ctx = {0};
struct commit *commit;
commit = lookup_commit_reference_by_name(fixup_message);
if (!commit)
die(_("could not lookup commit %s"), fixup_message);
ctx.output_encoding = get_commit_output_encoding();
format_commit_message(commit, "fixup! %s\n\n",
&sb, &ctx);
hook_arg1 = "message";
} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
die_errno(_("could not read MERGE_MSG"));
hook_arg1 = "merge";
} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
die_errno(_("could not read SQUASH_MSG"));
hook_arg1 = "squash";
} else if (template_file) {
if (strbuf_read_file(&sb, template_file, 0) < 0)
die_errno(_("could not read '%s'"), template_file);
hook_arg1 = "template";
clean_message_contents = 0;
}
/*
* The remaining cases don't modify the template message, but
* just set the argument(s) to the prepare-commit-msg hook.
*/
else if (whence == FROM_MERGE)
hook_arg1 = "merge";
else if (whence == FROM_CHERRY_PICK) {
hook_arg1 = "commit";
hook_arg2 = "CHERRY_PICK_HEAD";
}
if (squash_message) {
/*
* If squash_commit was used for the commit subject,
* then we're possibly hijacking other commit log options.
* Reset the hook args to tell the real story.
*/
hook_arg1 = "message";
hook_arg2 = "";
}
s->fp = fopen(git_path(commit_editmsg), "w");
if (s->fp == NULL)
die_errno(_("could not open '%s'"), git_path(commit_editmsg));
if (clean_message_contents)
stripspace(&sb, 0);
if (signoff) {
/*
* See if we have a Conflicts: block at the end. If yes, count
* its size, so we can ignore it.
*/
int ignore_footer = 0;
int i, eol, previous = 0;
const char *nl;
for (i = 0; i < sb.len; i++) {
nl = memchr(sb.buf + i, '\n', sb.len - i);
if (nl)
eol = nl - sb.buf;
else
eol = sb.len;
if (!prefixcmp(sb.buf + previous, "\nConflicts:\n")) {
ignore_footer = sb.len - previous;
break;
}
while (i < eol)
i++;
previous = eol;
}
append_signoff(&sb, ignore_footer);
}
if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
die_errno(_("could not write commit template"));
strbuf_release(&sb);
/* This checks if committer ident is explicitly given */
strbuf_addstr(&committer_ident, git_committer_info(IDENT_STRICT));
if (use_editor && include_status) {
char *ai_tmp, *ci_tmp;
if (whence != FROM_COMMIT)
status_printf_ln(s, GIT_COLOR_NORMAL,
whence == FROM_MERGE
? _("\n"
"It looks like you may be committing a merge.\n"
"If this is not correct, please remove the file\n"
" %s\n"
"and try again.\n")
: _("\n"
"It looks like you may be committing a cherry-pick.\n"
"If this is not correct, please remove the file\n"
" %s\n"
"and try again.\n"),
git_path(whence == FROM_MERGE
? "MERGE_HEAD"
: "CHERRY_PICK_HEAD"));
fprintf(s->fp, "\n");
if (cleanup_mode == CLEANUP_ALL)
status_printf(s, GIT_COLOR_NORMAL,
_("Please enter the commit message for your changes."
" Lines starting\nwith '#' will be ignored, and an empty"
" message aborts the commit.\n"));
else /* CLEANUP_SPACE, that is. */
status_printf(s, GIT_COLOR_NORMAL,
_("Please enter the commit message for your changes."
" Lines starting\n"
"with '#' will be kept; you may remove them"
" yourself if you want to.\n"
"An empty message aborts the commit.\n"));
if (only_include_assumed)
status_printf_ln(s, GIT_COLOR_NORMAL,
"%s", only_include_assumed);
ai_tmp = cut_ident_timestamp_part(author_ident->buf);
ci_tmp = cut_ident_timestamp_part(committer_ident.buf);
if (strcmp(author_ident->buf, committer_ident.buf))
status_printf_ln(s, GIT_COLOR_NORMAL,
_("%s"
"Author: %s"),
ident_shown++ ? "" : "\n",
author_ident->buf);
if (!user_ident_sufficiently_given())
status_printf_ln(s, GIT_COLOR_NORMAL,
_("%s"
"Committer: %s"),
ident_shown++ ? "" : "\n",
committer_ident.buf);
if (ident_shown)
status_printf_ln(s, GIT_COLOR_NORMAL, "");
saved_color_setting = s->use_color;
s->use_color = 0;
commitable = run_status(s->fp, index_file, prefix, 1, s);
s->use_color = saved_color_setting;
*ai_tmp = ' ';
*ci_tmp = ' ';
} else {
unsigned char sha1[20];
const char *parent = "HEAD";
if (!active_nr && read_cache() < 0)
die(_("Cannot read index"));
if (amend)
parent = "HEAD^1";
if (get_sha1(parent, sha1))
commitable = !!active_nr;
else
commitable = index_differs_from(parent, 0);
}
strbuf_release(&committer_ident);
fclose(s->fp);
/*
* Reject an attempt to record a non-merge empty commit without
* explicit --allow-empty. In the cherry-pick case, it may be
* empty due to conflict resolution, which the user should okay.
*/
if (!commitable && whence != FROM_MERGE && !allow_empty &&
!(amend && is_a_merge(current_head))) {
run_status(stdout, index_file, prefix, 0, s);
if (amend)
fputs(_(empty_amend_advice), stderr);
else if (whence == FROM_CHERRY_PICK)
fputs(_(empty_cherry_pick_advice), stderr);
return 0;
}
/*
* Re-read the index as pre-commit hook could have updated it,
* and write it out as a tree. We must do this before we invoke
* the editor and after we invoke run_status above.
*/
discard_cache();
read_cache_from(index_file);
if (update_main_cache_tree(0)) {
error(_("Error building trees"));
return 0;
}
if (run_hook(index_file, "prepare-commit-msg",
git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
return 0;
if (use_editor) {
char index[PATH_MAX];
const char *env[2] = { NULL };
env[0] = index;
snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
if (launch_editor(git_path(commit_editmsg), NULL, env)) {
fprintf(stderr,
_("Please supply the message using either -m or -F option.\n"));
exit(1);
}
}
if (!no_verify &&
run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
return 0;
}
return 1;
}
static int rest_is_empty(struct strbuf *sb, int start)
{
int i, eol;
const char *nl;
/* Check if the rest is just whitespace and Signed-of-by's. */
for (i = start; i < sb->len; i++) {
nl = memchr(sb->buf + i, '\n', sb->len - i);
if (nl)
eol = nl - sb->buf;
else
eol = sb->len;
if (strlen(sign_off_header) <= eol - i &&
!prefixcmp(sb->buf + i, sign_off_header)) {
i = eol;
continue;
}
while (i < eol)
if (!isspace(sb->buf[i++]))
return 0;
}
return 1;
}
/*
* Find out if the message in the strbuf contains only whitespace and
* Signed-off-by lines.
*/
static int message_is_empty(struct strbuf *sb)
{
if (cleanup_mode == CLEANUP_NONE && sb->len)
return 0;
return rest_is_empty(sb, 0);
}
/*
* See if the user edited the message in the editor or left what
* was in the template intact
*/
static int template_untouched(struct strbuf *sb)
{
struct strbuf tmpl = STRBUF_INIT;
char *start;
if (cleanup_mode == CLEANUP_NONE && sb->len)
return 0;
if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
return 0;
stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
start = (char *)skip_prefix(sb->buf, tmpl.buf);
if (!start)
start = sb->buf;
strbuf_release(&tmpl);
return rest_is_empty(sb, start - sb->buf);
}
static const char *find_author_by_nickname(const char *name)
{
struct rev_info revs;
struct commit *commit;
struct strbuf buf = STRBUF_INIT;
const char *av[20];
int ac = 0;
init_revisions(&revs, NULL);
strbuf_addf(&buf, "--author=%s", name);
av[++ac] = "--all";
av[++ac] = "-i";
av[++ac] = buf.buf;
av[++ac] = NULL;
setup_revisions(ac, av, &revs, NULL);
prepare_revision_walk(&revs);
commit = get_revision(&revs);
if (commit) {
struct pretty_print_context ctx = {0};
ctx.date_mode = DATE_NORMAL;
strbuf_release(&buf);
format_commit_message(commit, "%an <%ae>", &buf, &ctx);
return strbuf_detach(&buf, NULL);
}
die(_("No existing author found with '%s'"), name);
}
static void handle_untracked_files_arg(struct wt_status *s)
{
if (!untracked_files_arg)
; /* default already initialized */
else if (!strcmp(untracked_files_arg, "no"))
s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
else if (!strcmp(untracked_files_arg, "normal"))
s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
else if (!strcmp(untracked_files_arg, "all"))
s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
else
die(_("Invalid untracked files mode '%s'"), untracked_files_arg);
}
static const char *read_commit_message(const char *name)
{
const char *out_enc, *out;
struct commit *commit;
commit = lookup_commit_reference_by_name(name);
if (!commit)
die(_("could not lookup commit %s"), name);
out_enc = get_commit_output_encoding();
out = logmsg_reencode(commit, out_enc);
/*
* If we failed to reencode the buffer, just copy it
* byte for byte so the user can try to fix it up.
* This also handles the case where input and output
* encodings are identical.
*/
if (out == NULL)
out = xstrdup(commit->buffer);
return out;
}
static int parse_and_validate_options(int argc, const char *argv[],
const struct option *options,
const char * const usage[],
const char *prefix,
struct commit *current_head,
struct wt_status *s)
{
int f = 0;
argc = parse_options(argc, argv, prefix, options, usage, 0);
if (force_author && !strchr(force_author, '>'))
force_author = find_author_by_nickname(force_author);
if (force_author && renew_authorship)
die(_("Using both --reset-author and --author does not make sense"));
if (logfile || message.len || use_message || fixup_message)
use_editor = 0;
if (0 <= edit_flag)
use_editor = edit_flag;
if (!use_editor)
setenv("GIT_EDITOR", ":", 1);
/* Sanity check options */
if (amend && !current_head)
die(_("You have nothing to amend."));
if (amend && whence != FROM_COMMIT) {
if (whence == FROM_MERGE)
die(_("You are in the middle of a merge -- cannot amend."));
else if (whence == FROM_CHERRY_PICK)
die(_("You are in the middle of a cherry-pick -- cannot amend."));
}
if (fixup_message && squash_message)