-
Notifications
You must be signed in to change notification settings - Fork 28.1k
Expand file tree
/
Copy patham.c
More file actions
2562 lines (2143 loc) · 66 KB
/
Copy patham.c
File metadata and controls
2562 lines (2143 loc) · 66 KB
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 am"
*
* Based on git-am.sh by Junio C Hamano.
*/
#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "abspath.h"
#include "advice.h"
#include "config.h"
#include "editor.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "parse-options.h"
#include "dir.h"
#include "run-command.h"
#include "hook.h"
#include "quote.h"
#include "tempfile.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "refs.h"
#include "commit.h"
#include "diff.h"
#include "unpack-trees.h"
#include "branch.h"
#include "object-name.h"
#include "preload-index.h"
#include "sequencer.h"
#include "revision.h"
#include "merge-ort-wrappers.h"
#include "log-tree.h"
#include "notes-utils.h"
#include "rerere.h"
#include "mailinfo.h"
#include "apply.h"
#include "string-list.h"
#include "pager.h"
#include "path.h"
#include "pretty.h"
/**
* Returns the length of the first line of msg.
*/
static int linelen(const char *msg)
{
return strchrnul(msg, '\n') - msg;
}
/**
* Returns true if `str` consists of only whitespace, false otherwise.
*/
static int str_isspace(const char *str)
{
for (; *str; str++)
if (!isspace(*str))
return 0;
return 1;
}
enum patch_format {
PATCH_FORMAT_UNKNOWN = 0,
PATCH_FORMAT_MBOX,
PATCH_FORMAT_STGIT,
PATCH_FORMAT_STGIT_SERIES,
PATCH_FORMAT_HG,
PATCH_FORMAT_MBOXRD
};
enum keep_type {
KEEP_FALSE = 0,
KEEP_TRUE, /* pass -k flag to git-mailinfo */
KEEP_NON_PATCH /* pass -b flag to git-mailinfo */
};
enum scissors_type {
SCISSORS_UNSET = -1,
SCISSORS_FALSE = 0, /* pass --no-scissors to git-mailinfo */
SCISSORS_TRUE /* pass --scissors to git-mailinfo */
};
enum signoff_type {
SIGNOFF_FALSE = 0,
SIGNOFF_TRUE = 1,
SIGNOFF_EXPLICIT /* --signoff was set on the command-line */
};
enum resume_type {
RESUME_FALSE = 0,
RESUME_APPLY,
RESUME_RESOLVED,
RESUME_SKIP,
RESUME_ABORT,
RESUME_QUIT,
RESUME_SHOW_PATCH_RAW,
RESUME_SHOW_PATCH_DIFF,
RESUME_ALLOW_EMPTY,
};
enum empty_action {
STOP_ON_EMPTY_COMMIT = 0, /* output errors and stop in the middle of an am session */
DROP_EMPTY_COMMIT, /* skip with a notice message, unless "--quiet" has been passed */
KEEP_EMPTY_COMMIT, /* keep recording as empty commits */
};
struct am_state {
/* state directory path */
char *dir;
/* current and last patch numbers, 1-indexed */
int cur;
int last;
/* commit metadata and message */
char *author_name;
char *author_email;
char *author_date;
char *msg;
size_t msg_len;
/* when --rebasing, records the original commit the patch came from */
struct object_id orig_commit;
/* number of digits in patch filename */
int prec;
/* various operating modes and command line options */
int interactive;
int no_verify;
int threeway;
int quiet;
int signoff; /* enum signoff_type */
int utf8;
int keep; /* enum keep_type */
int message_id;
int scissors; /* enum scissors_type */
int quoted_cr; /* enum quoted_cr_action */
int empty_type; /* enum empty_action */
struct strvec git_apply_opts;
const char *resolvemsg;
int committer_date_is_author_date;
int ignore_date;
int allow_rerere_autoupdate;
const char *sign_commit;
int rebasing;
};
/**
* Initializes am_state with the default values.
*/
static void am_state_init(struct am_state *state)
{
int gpgsign;
memset(state, 0, sizeof(*state));
state->dir = repo_git_path(the_repository, "rebase-apply");
state->prec = 4;
repo_config_get_bool(the_repository, "am.threeway", &state->threeway);
state->utf8 = 1;
repo_config_get_bool(the_repository, "am.messageid", &state->message_id);
state->scissors = SCISSORS_UNSET;
state->quoted_cr = quoted_cr_unset;
strvec_init(&state->git_apply_opts);
if (!repo_config_get_bool(the_repository, "commit.gpgsign", &gpgsign))
state->sign_commit = gpgsign ? "" : NULL;
}
/**
* Releases memory allocated by an am_state.
*/
static void am_state_release(struct am_state *state)
{
free(state->dir);
free(state->author_name);
free(state->author_email);
free(state->author_date);
free(state->msg);
strvec_clear(&state->git_apply_opts);
}
static int am_option_parse_quoted_cr(const struct option *opt,
const char *arg, int unset)
{
BUG_ON_OPT_NEG(unset);
if (mailinfo_parse_quoted_cr_action(arg, opt->value) != 0)
return error(_("bad action '%s' for '%s'"), arg, "--quoted-cr");
return 0;
}
static int am_option_parse_empty(const struct option *opt,
const char *arg, int unset)
{
int *opt_value = opt->value;
BUG_ON_OPT_NEG(unset);
if (!strcmp(arg, "stop"))
*opt_value = STOP_ON_EMPTY_COMMIT;
else if (!strcmp(arg, "drop"))
*opt_value = DROP_EMPTY_COMMIT;
else if (!strcmp(arg, "keep"))
*opt_value = KEEP_EMPTY_COMMIT;
else
return error(_("invalid value for '%s': '%s'"), "--empty", arg);
return 0;
}
/**
* Returns path relative to the am_state directory.
*/
static inline const char *am_path(const struct am_state *state, const char *path)
{
return mkpath("%s/%s", state->dir, path);
}
/**
* For convenience to call write_file()
*/
static void write_state_text(const struct am_state *state,
const char *name, const char *string)
{
write_file(am_path(state, name), "%s", string);
}
static void write_state_count(const struct am_state *state,
const char *name, int value)
{
write_file(am_path(state, name), "%d", value);
}
static void write_state_bool(const struct am_state *state,
const char *name, int value)
{
write_state_text(state, name, value ? "t" : "f");
}
/**
* If state->quiet is false, calls fprintf(fp, fmt, ...), and appends a newline
* at the end.
*/
__attribute__((format (printf, 3, 4)))
static void say(const struct am_state *state, FILE *fp, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (!state->quiet) {
vfprintf(fp, fmt, ap);
putc('\n', fp);
}
va_end(ap);
}
/**
* Returns 1 if there is an am session in progress, 0 otherwise.
*/
static int am_in_progress(const struct am_state *state)
{
struct stat st;
if (lstat(state->dir, &st) < 0 || !S_ISDIR(st.st_mode))
return 0;
if (lstat(am_path(state, "last"), &st) || !S_ISREG(st.st_mode))
return 0;
if (lstat(am_path(state, "next"), &st) || !S_ISREG(st.st_mode))
return 0;
return 1;
}
/**
* Reads the contents of `file` in the `state` directory into `sb`. Returns the
* number of bytes read on success, -1 if the file does not exist. If `trim` is
* set, trailing whitespace will be removed.
*/
static int read_state_file(struct strbuf *sb, const struct am_state *state,
const char *file, int trim)
{
strbuf_reset(sb);
if (strbuf_read_file(sb, am_path(state, file), 0) >= 0) {
if (trim)
strbuf_trim(sb);
return sb->len;
}
if (errno == ENOENT)
return -1;
die_errno(_("could not read '%s'"), am_path(state, file));
}
/**
* Reads and parses the state directory's "author-script" file, and sets
* state->author_name, state->author_email and state->author_date accordingly.
* Returns 0 on success, -1 if the file could not be parsed.
*
* The author script is of the format:
*
* GIT_AUTHOR_NAME='$author_name'
* GIT_AUTHOR_EMAIL='$author_email'
* GIT_AUTHOR_DATE='$author_date'
*
* where $author_name, $author_email and $author_date are quoted. We are strict
* with our parsing, as the file was meant to be eval'd in the old git-am.sh
* script, and thus if the file differs from what this function expects, it is
* better to bail out than to do something that the user does not expect.
*/
static int read_am_author_script(struct am_state *state)
{
const char *filename = am_path(state, "author-script");
assert(!state->author_name);
assert(!state->author_email);
assert(!state->author_date);
return read_author_script(filename, &state->author_name,
&state->author_email, &state->author_date, 1);
}
/**
* Saves state->author_name, state->author_email and state->author_date in the
* state directory's "author-script" file.
*/
static void write_author_script(const struct am_state *state)
{
struct strbuf sb = STRBUF_INIT;
strbuf_addstr(&sb, "GIT_AUTHOR_NAME=");
sq_quote_buf(&sb, state->author_name);
strbuf_addch(&sb, '\n');
strbuf_addstr(&sb, "GIT_AUTHOR_EMAIL=");
sq_quote_buf(&sb, state->author_email);
strbuf_addch(&sb, '\n');
strbuf_addstr(&sb, "GIT_AUTHOR_DATE=");
sq_quote_buf(&sb, state->author_date);
strbuf_addch(&sb, '\n');
write_state_text(state, "author-script", sb.buf);
strbuf_release(&sb);
}
/**
* Reads the commit message from the state directory's "final-commit" file,
* setting state->msg to its contents and state->msg_len to the length of its
* contents in bytes.
*
* Returns 0 on success, -1 if the file does not exist.
*/
static int read_commit_msg(struct am_state *state)
{
struct strbuf sb = STRBUF_INIT;
assert(!state->msg);
if (read_state_file(&sb, state, "final-commit", 0) < 0) {
strbuf_release(&sb);
return -1;
}
state->msg = strbuf_detach(&sb, &state->msg_len);
return 0;
}
/**
* Saves state->msg in the state directory's "final-commit" file.
*/
static void write_commit_msg(const struct am_state *state)
{
const char *filename = am_path(state, "final-commit");
write_file_buf(filename, state->msg, state->msg_len);
}
/**
* Loads state from disk.
*/
static void am_load(struct am_state *state)
{
struct strbuf sb = STRBUF_INIT;
if (read_state_file(&sb, state, "next", 1) < 0)
BUG("state file 'next' does not exist");
state->cur = strtol(sb.buf, NULL, 10);
if (read_state_file(&sb, state, "last", 1) < 0)
BUG("state file 'last' does not exist");
state->last = strtol(sb.buf, NULL, 10);
if (read_am_author_script(state) < 0)
die(_("could not parse author script"));
read_commit_msg(state);
if (read_state_file(&sb, state, "original-commit", 1) < 0)
oidclr(&state->orig_commit, the_repository->hash_algo);
else if (get_oid_hex(sb.buf, &state->orig_commit) < 0)
die(_("could not parse %s"), am_path(state, "original-commit"));
read_state_file(&sb, state, "threeway", 1);
state->threeway = !strcmp(sb.buf, "t");
read_state_file(&sb, state, "quiet", 1);
state->quiet = !strcmp(sb.buf, "t");
read_state_file(&sb, state, "sign", 1);
state->signoff = !strcmp(sb.buf, "t");
read_state_file(&sb, state, "utf8", 1);
state->utf8 = !strcmp(sb.buf, "t");
if (file_exists(am_path(state, "rerere-autoupdate"))) {
read_state_file(&sb, state, "rerere-autoupdate", 1);
state->allow_rerere_autoupdate = strcmp(sb.buf, "t") ?
RERERE_NOAUTOUPDATE : RERERE_AUTOUPDATE;
} else {
state->allow_rerere_autoupdate = 0;
}
read_state_file(&sb, state, "keep", 1);
if (!strcmp(sb.buf, "t"))
state->keep = KEEP_TRUE;
else if (!strcmp(sb.buf, "b"))
state->keep = KEEP_NON_PATCH;
else
state->keep = KEEP_FALSE;
read_state_file(&sb, state, "messageid", 1);
state->message_id = !strcmp(sb.buf, "t");
read_state_file(&sb, state, "scissors", 1);
if (!strcmp(sb.buf, "t"))
state->scissors = SCISSORS_TRUE;
else if (!strcmp(sb.buf, "f"))
state->scissors = SCISSORS_FALSE;
else
state->scissors = SCISSORS_UNSET;
read_state_file(&sb, state, "quoted-cr", 1);
if (!*sb.buf)
state->quoted_cr = quoted_cr_unset;
else if (mailinfo_parse_quoted_cr_action(sb.buf, &state->quoted_cr) != 0)
die(_("could not parse %s"), am_path(state, "quoted-cr"));
read_state_file(&sb, state, "apply-opt", 1);
strvec_clear(&state->git_apply_opts);
if (sq_dequote_to_strvec(sb.buf, &state->git_apply_opts) < 0)
die(_("could not parse %s"), am_path(state, "apply-opt"));
state->rebasing = !!file_exists(am_path(state, "rebasing"));
strbuf_release(&sb);
}
/**
* Removes the am_state directory, forcefully terminating the current am
* session.
*/
static void am_destroy(const struct am_state *state)
{
struct strbuf sb = STRBUF_INIT;
strbuf_addstr(&sb, state->dir);
remove_dir_recursively(&sb, 0);
strbuf_release(&sb);
}
/**
* Runs applypatch-msg hook. Returns its exit code.
*/
static int run_applypatch_msg_hook(struct am_state *state)
{
int ret = 0;
assert(state->msg);
if (!state->no_verify) {
struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT_FORCE_SERIAL;
strvec_push(&opt.args, am_path(state, "final-commit"));
ret = run_hooks_opt(the_repository, "applypatch-msg", &opt);
}
if (!ret) {
FREE_AND_NULL(state->msg);
if (read_commit_msg(state) < 0)
die(_("'%s' was deleted by the applypatch-msg hook"),
am_path(state, "final-commit"));
}
return ret;
}
/**
* Runs post-rewrite hook. Returns it exit code.
*/
static int run_post_rewrite_hook(const struct am_state *state)
{
struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT;
strvec_push(&opt.args, "rebase");
opt.path_to_stdin = am_path(state, "rewritten");
return run_hooks_opt(the_repository, "post-rewrite", &opt);
}
/**
* Reads the state directory's "rewritten" file, and copies notes from the old
* commits listed in the file to their rewritten commits.
*
* Returns 0 on success, -1 on failure.
*/
static int copy_notes_for_rebase(const struct am_state *state)
{
struct notes_rewrite_cfg *c;
struct strbuf sb = STRBUF_INIT;
const char *invalid_line = _("Malformed input line: '%s'.");
const char *msg = "Notes added by 'git rebase'";
FILE *fp;
int ret = 0;
assert(state->rebasing);
c = init_copy_notes_for_rewrite("rebase");
if (!c)
return 0;
fp = xfopen(am_path(state, "rewritten"), "r");
while (!strbuf_getline_lf(&sb, fp)) {
struct object_id from_obj, to_obj;
const char *p;
if (sb.len != the_hash_algo->hexsz * 2 + 1) {
ret = error(invalid_line, sb.buf);
goto finish;
}
if (parse_oid_hex(sb.buf, &from_obj, &p)) {
ret = error(invalid_line, sb.buf);
goto finish;
}
if (*p != ' ') {
ret = error(invalid_line, sb.buf);
goto finish;
}
if (get_oid_hex(p + 1, &to_obj)) {
ret = error(invalid_line, sb.buf);
goto finish;
}
if (copy_note_for_rewrite(c, &from_obj, &to_obj))
ret = error(_("Failed to copy notes from '%s' to '%s'"),
oid_to_hex(&from_obj), oid_to_hex(&to_obj));
}
finish:
finish_copy_notes_for_rewrite(the_repository, c, msg);
fclose(fp);
strbuf_release(&sb);
return ret;
}
/**
* Determines if the file looks like a piece of RFC2822 mail by grabbing all
* non-indented lines and checking if they look like they begin with valid
* header field names.
*
* Returns 1 if the file looks like a piece of mail, 0 otherwise.
*/
static int is_mail(FILE *fp)
{
const char *header_regex = "^[!-9;-~]+:";
struct strbuf sb = STRBUF_INIT;
regex_t regex;
int ret = 1;
if (fseek(fp, 0L, SEEK_SET))
die_errno(_("fseek failed"));
if (regcomp(®ex, header_regex, REG_NOSUB | REG_EXTENDED))
die("invalid pattern: %s", header_regex);
while (!strbuf_getline(&sb, fp)) {
if (!sb.len)
break; /* End of header */
/* Ignore indented folded lines */
if (*sb.buf == '\t' || *sb.buf == ' ')
continue;
/* It's a header if it matches header_regex */
if (regexec(®ex, sb.buf, 0, NULL, 0)) {
ret = 0;
goto done;
}
}
done:
regfree(®ex);
strbuf_release(&sb);
return ret;
}
/**
* Attempts to detect the patch_format of the patches contained in `paths`,
* returning the PATCH_FORMAT_* enum value. Returns PATCH_FORMAT_UNKNOWN if
* detection fails.
*/
static int detect_patch_format(const char **paths)
{
enum patch_format ret = PATCH_FORMAT_UNKNOWN;
struct strbuf l1 = STRBUF_INIT;
struct strbuf l2 = STRBUF_INIT;
struct strbuf l3 = STRBUF_INIT;
FILE *fp;
/*
* We default to mbox format if input is from stdin and for directories
*/
if (!*paths || !strcmp(*paths, "-") || is_directory(*paths))
return PATCH_FORMAT_MBOX;
/*
* Otherwise, check the first few lines of the first patch, starting
* from the first non-blank line, to try to detect its format.
*/
fp = xfopen(*paths, "r");
while (!strbuf_getline(&l1, fp)) {
if (l1.len)
break;
}
if (starts_with(l1.buf, "From ") || starts_with(l1.buf, "From: ")) {
ret = PATCH_FORMAT_MBOX;
goto done;
}
if (starts_with(l1.buf, "# This series applies on GIT commit")) {
ret = PATCH_FORMAT_STGIT_SERIES;
goto done;
}
if (!strcmp(l1.buf, "# HG changeset patch")) {
ret = PATCH_FORMAT_HG;
goto done;
}
strbuf_getline(&l2, fp);
strbuf_getline(&l3, fp);
/*
* If the second line is empty and the third is a From, Author or Date
* entry, this is likely an StGit patch.
*/
if (l1.len && !l2.len &&
(starts_with(l3.buf, "From:") ||
starts_with(l3.buf, "Author:") ||
starts_with(l3.buf, "Date:"))) {
ret = PATCH_FORMAT_STGIT;
goto done;
}
if (l1.len && is_mail(fp)) {
ret = PATCH_FORMAT_MBOX;
goto done;
}
done:
fclose(fp);
strbuf_release(&l1);
strbuf_release(&l2);
strbuf_release(&l3);
return ret;
}
/**
* Splits out individual email patches from `paths`, where each path is either
* a mbox file or a Maildir. Returns 0 on success, -1 on failure.
*/
static int split_mail_mbox(struct am_state *state, const char **paths,
int keep_cr, int mboxrd)
{
struct child_process cp = CHILD_PROCESS_INIT;
struct strbuf last = STRBUF_INIT;
int ret;
cp.git_cmd = 1;
strvec_push(&cp.args, "mailsplit");
strvec_pushf(&cp.args, "-d%d", state->prec);
strvec_pushf(&cp.args, "-o%s", state->dir);
strvec_push(&cp.args, "-b");
if (keep_cr)
strvec_push(&cp.args, "--keep-cr");
if (mboxrd)
strvec_push(&cp.args, "--mboxrd");
strvec_push(&cp.args, "--");
strvec_pushv(&cp.args, paths);
ret = capture_command(&cp, &last, 8);
if (ret)
goto exit;
state->cur = 1;
state->last = strtol(last.buf, NULL, 10);
exit:
strbuf_release(&last);
return ret ? -1 : 0;
}
/**
* Callback signature for split_mail_conv(). The foreign patch should be
* read from `in`, and the converted patch (in RFC2822 mail format) should be
* written to `out`. Return 0 on success, or -1 on failure.
*/
typedef int (*mail_conv_fn)(FILE *out, FILE *in, int keep_cr);
/**
* Calls `fn` for each file in `paths` to convert the foreign patch to the
* RFC2822 mail format suitable for parsing with git-mailinfo.
*
* Returns 0 on success, -1 on failure.
*/
static int split_mail_conv(mail_conv_fn fn, struct am_state *state,
const char **paths, int keep_cr)
{
static const char *stdin_only[] = {"-", NULL};
int i;
if (!*paths)
paths = stdin_only;
for (i = 0; *paths; paths++, i++) {
FILE *in, *out;
const char *mail;
int ret;
if (!strcmp(*paths, "-"))
in = stdin;
else
in = fopen(*paths, "r");
if (!in)
return error_errno(_("could not open '%s' for reading"),
*paths);
mail = mkpath("%s/%0*d", state->dir, state->prec, i + 1);
out = fopen(mail, "w");
if (!out) {
if (in != stdin)
fclose(in);
return error_errno(_("could not open '%s' for writing"),
mail);
}
ret = fn(out, in, keep_cr);
fclose(out);
if (in != stdin)
fclose(in);
if (ret)
return error(_("could not parse patch '%s'"), *paths);
}
state->cur = 1;
state->last = i;
return 0;
}
/**
* A split_mail_conv() callback that converts an StGit patch to an RFC2822
* message suitable for parsing with git-mailinfo.
*/
static int stgit_patch_to_mail(FILE *out, FILE *in, int keep_cr UNUSED)
{
struct strbuf sb = STRBUF_INIT;
int subject_printed = 0;
while (!strbuf_getline_lf(&sb, in)) {
const char *str;
if (str_isspace(sb.buf))
continue;
else if (skip_prefix(sb.buf, "Author:", &str))
fprintf(out, "From:%s\n", str);
else if (starts_with(sb.buf, "From") || starts_with(sb.buf, "Date"))
fprintf(out, "%s\n", sb.buf);
else if (!subject_printed) {
fprintf(out, "Subject: %s\n", sb.buf);
subject_printed = 1;
} else {
fprintf(out, "\n%s\n", sb.buf);
break;
}
}
strbuf_reset(&sb);
while (strbuf_fread(&sb, 8192, in) > 0) {
fwrite(sb.buf, 1, sb.len, out);
strbuf_reset(&sb);
}
strbuf_release(&sb);
return 0;
}
/**
* This function only supports a single StGit series file in `paths`.
*
* Given an StGit series file, converts the StGit patches in the series into
* RFC2822 messages suitable for parsing with git-mailinfo, and queues them in
* the state directory.
*
* Returns 0 on success, -1 on failure.
*/
static int split_mail_stgit_series(struct am_state *state, const char **paths,
int keep_cr)
{
const char *series_dir;
char *series_dir_buf;
FILE *fp;
struct strvec patches = STRVEC_INIT;
struct strbuf sb = STRBUF_INIT;
int ret;
if (!paths[0] || paths[1])
return error(_("Only one StGIT patch series can be applied at once"));
series_dir_buf = xstrdup(*paths);
series_dir = dirname(series_dir_buf);
fp = fopen(*paths, "r");
if (!fp) {
free(series_dir_buf);
return error_errno(_("could not open '%s' for reading"), *paths);
}
while (!strbuf_getline_lf(&sb, fp)) {
if (*sb.buf == '#')
continue; /* skip comment lines */
strvec_push(&patches, mkpath("%s/%s", series_dir, sb.buf));
}
fclose(fp);
strbuf_release(&sb);
free(series_dir_buf);
ret = split_mail_conv(stgit_patch_to_mail, state, patches.v, keep_cr);
strvec_clear(&patches);
return ret;
}
/**
* A split_patches_conv() callback that converts a mercurial patch to a RFC2822
* message suitable for parsing with git-mailinfo.
*/
static int hg_patch_to_mail(FILE *out, FILE *in, int keep_cr UNUSED)
{
struct strbuf sb = STRBUF_INIT;
int rc = 0;
while (!strbuf_getline_lf(&sb, in)) {
const char *str;
if (skip_prefix(sb.buf, "# User ", &str))
fprintf(out, "From: %s\n", str);
else if (skip_prefix(sb.buf, "# Date ", &str)) {
timestamp_t timestamp;
long tz, tz2;
char *end;
errno = 0;
timestamp = parse_timestamp(str, &end, 10);
if (errno) {
rc = error(_("invalid timestamp"));
goto exit;
}
if (!skip_prefix(end, " ", &str)) {
rc = error(_("invalid Date line"));
goto exit;
}
errno = 0;
tz = strtol(str, &end, 10);
if (errno) {
rc = error(_("invalid timezone offset"));
goto exit;
}
if (*end) {
rc = error(_("invalid Date line"));
goto exit;
}
/*
* mercurial's timezone is in seconds west of UTC,
* however git's timezone is in hours + minutes east of
* UTC. Convert it.
*/
tz2 = labs(tz) / 3600 * 100 + labs(tz) % 3600 / 60;
if (tz > 0)
tz2 = -tz2;
fprintf(out, "Date: %s\n", show_date(timestamp, tz2, DATE_MODE(RFC2822)));
} else if (starts_with(sb.buf, "# ")) {
continue;
} else {
fprintf(out, "\n%s\n", sb.buf);
break;
}
}
strbuf_reset(&sb);
while (strbuf_fread(&sb, 8192, in) > 0) {
fwrite(sb.buf, 1, sb.len, out);
strbuf_reset(&sb);
}
exit:
strbuf_release(&sb);
return rc;
}
/**
* Splits a list of files/directories into individual email patches. Each path
* in `paths` must be a file/directory that is formatted according to
* `patch_format`.
*
* Once split out, the individual email patches will be stored in the state
* directory, with each patch's filename being its index, padded to state->prec
* digits.
*
* state->cur will be set to the index of the first mail, and state->last will
* be set to the index of the last mail.
*
* Set keep_cr to 0 to convert all lines ending with \r\n to end with \n, 1
* to disable this behavior, -1 to use the default configured setting.
*
* Returns 0 on success, -1 on failure.
*/
static int split_mail(struct am_state *state, enum patch_format patch_format,
const char **paths, int keep_cr)
{
if (keep_cr < 0) {
keep_cr = 0;
repo_config_get_bool(the_repository, "am.keepcr", &keep_cr);
}
switch (patch_format) {
case PATCH_FORMAT_MBOX:
return split_mail_mbox(state, paths, keep_cr, 0);
case PATCH_FORMAT_STGIT:
return split_mail_conv(stgit_patch_to_mail, state, paths, keep_cr);
case PATCH_FORMAT_STGIT_SERIES:
return split_mail_stgit_series(state, paths, keep_cr);
case PATCH_FORMAT_HG:
return split_mail_conv(hg_patch_to_mail, state, paths, keep_cr);
case PATCH_FORMAT_MBOXRD:
return split_mail_mbox(state, paths, keep_cr, 1);
default:
BUG("invalid patch_format");
}
return -1;
}
/**
* Setup a new am session for applying patches
*/
static void am_setup(struct am_state *state, enum patch_format patch_format,
const char **paths, int keep_cr)
{
struct object_id curr_head;
const char *str;
struct strbuf sb = STRBUF_INIT;
if (!patch_format)