forked from git-for-windows/git
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsubmodule.c
1898 lines (1622 loc) · 51.2 KB
/
submodule.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
#include "cache.h"
#include "submodule-config.h"
#include "submodule.h"
#include "dir.h"
#include "diff.h"
#include "commit.h"
#include "revision.h"
#include "run-command.h"
#include "diffcore.h"
#include "refs.h"
#include "string-list.h"
#include "sha1-array.h"
#include "argv-array.h"
#include "blob.h"
#include "thread-utils.h"
#include "quote.h"
#include "remote.h"
#include "worktree.h"
static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND;
static int config_update_recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
static int parallel_jobs = 1;
static struct string_list changed_submodule_paths = STRING_LIST_INIT_NODUP;
static int initialized_fetch_ref_tips;
static struct oid_array ref_tips_before_fetch;
static struct oid_array ref_tips_after_fetch;
/*
* The following flag is set if the .gitmodules file is unmerged. We then
* disable recursion for all submodules where .git/config doesn't have a
* matching config entry because we can't guess what might be configured in
* .gitmodules unless the user resolves the conflict. When a command line
* option is given (which always overrides configuration) this flag will be
* ignored.
*/
static int gitmodules_is_unmerged;
/*
* This flag is set if the .gitmodules file had unstaged modifications on
* startup. This must be checked before allowing modifications to the
* .gitmodules file with the intention to stage them later, because when
* continuing we would stage the modifications the user didn't stage herself
* too. That might change in a future version when we learn to stage the
* changes we do ourselves without staging any previous modifications.
*/
static int gitmodules_is_modified;
int is_staging_gitmodules_ok(void)
{
return !gitmodules_is_modified;
}
/*
* Try to update the "path" entry in the "submodule.<name>" section of the
* .gitmodules file. Return 0 only if a .gitmodules file was found, a section
* with the correct path=<oldpath> setting was found and we could update it.
*/
int update_path_in_gitmodules(const char *oldpath, const char *newpath)
{
struct strbuf entry = STRBUF_INIT;
const struct submodule *submodule;
if (!file_exists(".gitmodules")) /* Do nothing without .gitmodules */
return -1;
if (gitmodules_is_unmerged)
die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first"));
submodule = submodule_from_path(null_sha1, oldpath);
if (!submodule || !submodule->name) {
warning(_("Could not find section in .gitmodules where path=%s"), oldpath);
return -1;
}
strbuf_addstr(&entry, "submodule.");
strbuf_addstr(&entry, submodule->name);
strbuf_addstr(&entry, ".path");
if (git_config_set_in_file_gently(".gitmodules", entry.buf, newpath) < 0) {
/* Maybe the user already did that, don't error out here */
warning(_("Could not update .gitmodules entry %s"), entry.buf);
strbuf_release(&entry);
return -1;
}
strbuf_release(&entry);
return 0;
}
/*
* Try to remove the "submodule.<name>" section from .gitmodules where the given
* path is configured. Return 0 only if a .gitmodules file was found, a section
* with the correct path=<path> setting was found and we could remove it.
*/
int remove_path_from_gitmodules(const char *path)
{
struct strbuf sect = STRBUF_INIT;
const struct submodule *submodule;
if (!file_exists(".gitmodules")) /* Do nothing without .gitmodules */
return -1;
if (gitmodules_is_unmerged)
die(_("Cannot change unmerged .gitmodules, resolve merge conflicts first"));
submodule = submodule_from_path(null_sha1, path);
if (!submodule || !submodule->name) {
warning(_("Could not find section in .gitmodules where path=%s"), path);
return -1;
}
strbuf_addstr(§, "submodule.");
strbuf_addstr(§, submodule->name);
if (git_config_rename_section_in_file(".gitmodules", sect.buf, NULL) < 0) {
/* Maybe the user already did that, don't error out here */
warning(_("Could not remove .gitmodules entry for %s"), path);
strbuf_release(§);
return -1;
}
strbuf_release(§);
return 0;
}
void stage_updated_gitmodules(void)
{
if (add_file_to_cache(".gitmodules", 0))
die(_("staging updated .gitmodules failed"));
}
static int add_submodule_odb(const char *path)
{
struct strbuf objects_directory = STRBUF_INIT;
int ret = 0;
ret = strbuf_git_path_submodule(&objects_directory, path, "objects/");
if (ret)
goto done;
if (!is_directory(objects_directory.buf)) {
ret = -1;
goto done;
}
add_to_alternates_memory(objects_directory.buf);
done:
strbuf_release(&objects_directory);
return ret;
}
void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt,
const char *path)
{
const struct submodule *submodule = submodule_from_path(null_sha1, path);
if (submodule) {
if (submodule->ignore)
handle_ignore_submodules_arg(diffopt, submodule->ignore);
else if (gitmodules_is_unmerged)
DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES);
}
}
int submodule_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "submodule.fetchjobs")) {
parallel_jobs = git_config_int(var, value);
if (parallel_jobs < 0)
die(_("negative values not allowed for submodule.fetchJobs"));
return 0;
} else if (starts_with(var, "submodule."))
return parse_submodule_config_option(var, value);
else if (!strcmp(var, "fetch.recursesubmodules")) {
config_fetch_recurse_submodules = parse_fetch_recurse_submodules_arg(var, value);
return 0;
}
return 0;
}
void gitmodules_config(void)
{
const char *work_tree = get_git_work_tree();
if (work_tree) {
struct strbuf gitmodules_path = STRBUF_INIT;
int pos;
strbuf_addstr(&gitmodules_path, work_tree);
strbuf_addstr(&gitmodules_path, "/.gitmodules");
if (read_cache() < 0)
die("index file corrupt");
pos = cache_name_pos(".gitmodules", 11);
if (pos < 0) { /* .gitmodules not found or isn't merged */
pos = -1 - pos;
if (active_nr > pos) { /* there is a .gitmodules */
const struct cache_entry *ce = active_cache[pos];
if (ce_namelen(ce) == 11 &&
!memcmp(ce->name, ".gitmodules", 11))
gitmodules_is_unmerged = 1;
}
} else if (pos < active_nr) {
struct stat st;
if (lstat(".gitmodules", &st) == 0 &&
ce_match_stat(active_cache[pos], &st, 0) & DATA_CHANGED)
gitmodules_is_modified = 1;
}
if (!gitmodules_is_unmerged)
git_config_from_file(submodule_config, gitmodules_path.buf, NULL);
strbuf_release(&gitmodules_path);
}
}
void gitmodules_config_sha1(const unsigned char *commit_sha1)
{
struct strbuf rev = STRBUF_INIT;
unsigned char sha1[20];
if (gitmodule_sha1_from_commit(commit_sha1, sha1, &rev)) {
git_config_from_blob_sha1(submodule_config, rev.buf,
sha1, NULL);
}
strbuf_release(&rev);
}
/*
* NEEDSWORK: With the addition of different configuration options to determine
* if a submodule is of interests, the validity of this function's name comes
* into question. Once the dust has settled and more concrete terminology is
* decided upon, come up with a more proper name for this function. One
* potential candidate could be 'is_submodule_active()'.
*
* Determine if a submodule has been initialized at a given 'path'
*/
int is_submodule_initialized(const char *path)
{
int ret = 0;
char *key = NULL;
char *value = NULL;
const struct string_list *sl;
const struct submodule *module = submodule_from_path(null_sha1, path);
/* early return if there isn't a path->module mapping */
if (!module)
return 0;
/* submodule.<name>.active is set */
key = xstrfmt("submodule.%s.active", module->name);
if (!git_config_get_bool(key, &ret)) {
free(key);
return ret;
}
free(key);
/* submodule.active is set */
sl = git_config_get_value_multi("submodule.active");
if (sl) {
struct pathspec ps;
struct argv_array args = ARGV_ARRAY_INIT;
const struct string_list_item *item;
for_each_string_list_item(item, sl) {
argv_array_push(&args, item->string);
}
parse_pathspec(&ps, 0, 0, NULL, args.argv);
ret = match_pathspec(&ps, path, strlen(path), 0, NULL, 1);
argv_array_clear(&args);
clear_pathspec(&ps);
return ret;
}
/* fallback to checking if the URL is set */
key = xstrfmt("submodule.%s.url", module->name);
ret = !git_config_get_string(key, &value);
free(value);
free(key);
return ret;
}
int is_submodule_populated_gently(const char *path, int *return_error_code)
{
int ret = 0;
char *gitdir = xstrfmt("%s/.git", path);
if (resolve_gitdir_gently(gitdir, return_error_code))
ret = 1;
free(gitdir);
return ret;
}
int parse_submodule_update_strategy(const char *value,
struct submodule_update_strategy *dst)
{
free((void*)dst->command);
dst->command = NULL;
if (!strcmp(value, "none"))
dst->type = SM_UPDATE_NONE;
else if (!strcmp(value, "checkout"))
dst->type = SM_UPDATE_CHECKOUT;
else if (!strcmp(value, "rebase"))
dst->type = SM_UPDATE_REBASE;
else if (!strcmp(value, "merge"))
dst->type = SM_UPDATE_MERGE;
else if (skip_prefix(value, "!", &value)) {
dst->type = SM_UPDATE_COMMAND;
dst->command = xstrdup(value);
} else
return -1;
return 0;
}
const char *submodule_strategy_to_string(const struct submodule_update_strategy *s)
{
struct strbuf sb = STRBUF_INIT;
switch (s->type) {
case SM_UPDATE_CHECKOUT:
return "checkout";
case SM_UPDATE_MERGE:
return "merge";
case SM_UPDATE_REBASE:
return "rebase";
case SM_UPDATE_NONE:
return "none";
case SM_UPDATE_UNSPECIFIED:
return NULL;
case SM_UPDATE_COMMAND:
strbuf_addf(&sb, "!%s", s->command);
return strbuf_detach(&sb, NULL);
}
return NULL;
}
void handle_ignore_submodules_arg(struct diff_options *diffopt,
const char *arg)
{
DIFF_OPT_CLR(diffopt, IGNORE_SUBMODULES);
DIFF_OPT_CLR(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
DIFF_OPT_CLR(diffopt, IGNORE_DIRTY_SUBMODULES);
if (!strcmp(arg, "all"))
DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES);
else if (!strcmp(arg, "untracked"))
DIFF_OPT_SET(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES);
else if (!strcmp(arg, "dirty"))
DIFF_OPT_SET(diffopt, IGNORE_DIRTY_SUBMODULES);
else if (strcmp(arg, "none"))
die("bad --ignore-submodules argument: %s", arg);
}
static int prepare_submodule_summary(struct rev_info *rev, const char *path,
struct commit *left, struct commit *right,
struct commit_list *merge_bases)
{
struct commit_list *list;
init_revisions(rev, NULL);
setup_revisions(0, NULL, rev, NULL);
rev->left_right = 1;
rev->first_parent_only = 1;
left->object.flags |= SYMMETRIC_LEFT;
add_pending_object(rev, &left->object, path);
add_pending_object(rev, &right->object, path);
for (list = merge_bases; list; list = list->next) {
list->item->object.flags |= UNINTERESTING;
add_pending_object(rev, &list->item->object,
oid_to_hex(&list->item->object.oid));
}
return prepare_revision_walk(rev);
}
static void print_submodule_summary(struct rev_info *rev, FILE *f,
const char *line_prefix,
const char *del, const char *add, const char *reset)
{
static const char format[] = " %m %s";
struct strbuf sb = STRBUF_INIT;
struct commit *commit;
while ((commit = get_revision(rev))) {
struct pretty_print_context ctx = {0};
ctx.date_mode = rev->date_mode;
ctx.output_encoding = get_log_output_encoding();
strbuf_setlen(&sb, 0);
strbuf_addstr(&sb, line_prefix);
if (commit->object.flags & SYMMETRIC_LEFT) {
if (del)
strbuf_addstr(&sb, del);
}
else if (add)
strbuf_addstr(&sb, add);
format_commit_message(commit, format, &sb, &ctx);
if (reset)
strbuf_addstr(&sb, reset);
strbuf_addch(&sb, '\n');
fprintf(f, "%s", sb.buf);
}
strbuf_release(&sb);
}
static void prepare_submodule_repo_env_no_git_dir(struct argv_array *out)
{
const char * const *var;
for (var = local_repo_env; *var; var++) {
if (strcmp(*var, CONFIG_DATA_ENVIRONMENT))
argv_array_push(out, *var);
}
}
void prepare_submodule_repo_env(struct argv_array *out)
{
prepare_submodule_repo_env_no_git_dir(out);
argv_array_pushf(out, "%s=%s", GIT_DIR_ENVIRONMENT,
DEFAULT_GIT_DIR_ENVIRONMENT);
}
/* Helper function to display the submodule header line prior to the full
* summary output. If it can locate the submodule objects directory it will
* attempt to lookup both the left and right commits and put them into the
* left and right pointers.
*/
static void show_submodule_header(FILE *f, const char *path,
const char *line_prefix,
struct object_id *one, struct object_id *two,
unsigned dirty_submodule, const char *meta,
const char *reset,
struct commit **left, struct commit **right,
struct commit_list **merge_bases)
{
const char *message = NULL;
struct strbuf sb = STRBUF_INIT;
int fast_forward = 0, fast_backward = 0;
if (dirty_submodule & DIRTY_SUBMODULE_UNTRACKED)
fprintf(f, "%sSubmodule %s contains untracked content\n",
line_prefix, path);
if (dirty_submodule & DIRTY_SUBMODULE_MODIFIED)
fprintf(f, "%sSubmodule %s contains modified content\n",
line_prefix, path);
if (is_null_oid(one))
message = "(new submodule)";
else if (is_null_oid(two))
message = "(submodule deleted)";
if (add_submodule_odb(path)) {
if (!message)
message = "(not initialized)";
goto output_header;
}
/*
* Attempt to lookup the commit references, and determine if this is
* a fast forward or fast backwards update.
*/
*left = lookup_commit_reference(one->hash);
*right = lookup_commit_reference(two->hash);
/*
* Warn about missing commits in the submodule project, but only if
* they aren't null.
*/
if ((!is_null_oid(one) && !*left) ||
(!is_null_oid(two) && !*right))
message = "(commits not present)";
*merge_bases = get_merge_bases(*left, *right);
if (*merge_bases) {
if ((*merge_bases)->item == *left)
fast_forward = 1;
else if ((*merge_bases)->item == *right)
fast_backward = 1;
}
if (!oidcmp(one, two)) {
strbuf_release(&sb);
return;
}
output_header:
strbuf_addf(&sb, "%s%sSubmodule %s ", line_prefix, meta, path);
strbuf_add_unique_abbrev(&sb, one->hash, DEFAULT_ABBREV);
strbuf_addstr(&sb, (fast_backward || fast_forward) ? ".." : "...");
strbuf_add_unique_abbrev(&sb, two->hash, DEFAULT_ABBREV);
if (message)
strbuf_addf(&sb, " %s%s\n", message, reset);
else
strbuf_addf(&sb, "%s:%s\n", fast_backward ? " (rewind)" : "", reset);
fwrite(sb.buf, sb.len, 1, f);
strbuf_release(&sb);
}
void show_submodule_summary(FILE *f, const char *path,
const char *line_prefix,
struct object_id *one, struct object_id *two,
unsigned dirty_submodule, const char *meta,
const char *del, const char *add, const char *reset)
{
struct rev_info rev;
struct commit *left = NULL, *right = NULL;
struct commit_list *merge_bases = NULL;
show_submodule_header(f, path, line_prefix, one, two, dirty_submodule,
meta, reset, &left, &right, &merge_bases);
/*
* If we don't have both a left and a right pointer, there is no
* reason to try and display a summary. The header line should contain
* all the information the user needs.
*/
if (!left || !right)
goto out;
/* Treat revision walker failure the same as missing commits */
if (prepare_submodule_summary(&rev, path, left, right, merge_bases)) {
fprintf(f, "%s(revision walker failed)\n", line_prefix);
goto out;
}
print_submodule_summary(&rev, f, line_prefix, del, add, reset);
out:
if (merge_bases)
free_commit_list(merge_bases);
clear_commit_marks(left, ~0);
clear_commit_marks(right, ~0);
}
void show_submodule_inline_diff(FILE *f, const char *path,
const char *line_prefix,
struct object_id *one, struct object_id *two,
unsigned dirty_submodule, const char *meta,
const char *del, const char *add, const char *reset,
const struct diff_options *o)
{
const struct object_id *old = &empty_tree_oid, *new = &empty_tree_oid;
struct commit *left = NULL, *right = NULL;
struct commit_list *merge_bases = NULL;
struct strbuf submodule_dir = STRBUF_INIT;
struct child_process cp = CHILD_PROCESS_INIT;
show_submodule_header(f, path, line_prefix, one, two, dirty_submodule,
meta, reset, &left, &right, &merge_bases);
/* We need a valid left and right commit to display a difference */
if (!(left || is_null_oid(one)) ||
!(right || is_null_oid(two)))
goto done;
if (left)
old = one;
if (right)
new = two;
fflush(f);
cp.git_cmd = 1;
cp.dir = path;
cp.out = dup(fileno(f));
cp.no_stdin = 1;
/* TODO: other options may need to be passed here. */
argv_array_push(&cp.args, "diff");
argv_array_pushf(&cp.args, "--line-prefix=%s", line_prefix);
if (DIFF_OPT_TST(o, REVERSE_DIFF)) {
argv_array_pushf(&cp.args, "--src-prefix=%s%s/",
o->b_prefix, path);
argv_array_pushf(&cp.args, "--dst-prefix=%s%s/",
o->a_prefix, path);
} else {
argv_array_pushf(&cp.args, "--src-prefix=%s%s/",
o->a_prefix, path);
argv_array_pushf(&cp.args, "--dst-prefix=%s%s/",
o->b_prefix, path);
}
argv_array_push(&cp.args, oid_to_hex(old));
/*
* If the submodule has modified content, we will diff against the
* work tree, under the assumption that the user has asked for the
* diff format and wishes to actually see all differences even if they
* haven't yet been committed to the submodule yet.
*/
if (!(dirty_submodule & DIRTY_SUBMODULE_MODIFIED))
argv_array_push(&cp.args, oid_to_hex(new));
prepare_submodule_repo_env(&cp.env_array);
if (run_command(&cp))
fprintf(f, "(diff failed)\n");
done:
strbuf_release(&submodule_dir);
if (merge_bases)
free_commit_list(merge_bases);
if (left)
clear_commit_marks(left, ~0);
if (right)
clear_commit_marks(right, ~0);
}
void set_config_fetch_recurse_submodules(int value)
{
config_fetch_recurse_submodules = value;
}
void set_config_update_recurse_submodules(int value)
{
config_update_recurse_submodules = value;
}
int should_update_submodules(void)
{
return config_update_recurse_submodules == RECURSE_SUBMODULES_ON;
}
const struct submodule *submodule_from_ce(const struct cache_entry *ce)
{
if (!S_ISGITLINK(ce->ce_mode))
return NULL;
if (!should_update_submodules())
return NULL;
return submodule_from_path(null_sha1, ce->name);
}
static int has_remote(const char *refname, const struct object_id *oid,
int flags, void *cb_data)
{
return 1;
}
static int append_oid_to_argv(const struct object_id *oid, void *data)
{
struct argv_array *argv = data;
argv_array_push(argv, oid_to_hex(oid));
return 0;
}
static int check_has_commit(const struct object_id *oid, void *data)
{
int *has_commit = data;
if (!lookup_commit_reference(oid->hash))
*has_commit = 0;
return 0;
}
static int submodule_has_commits(const char *path, struct oid_array *commits)
{
int has_commit = 1;
if (add_submodule_odb(path))
return 0;
oid_array_for_each_unique(commits, check_has_commit, &has_commit);
return has_commit;
}
static int submodule_needs_pushing(const char *path, struct oid_array *commits)
{
if (!submodule_has_commits(path, commits))
/*
* NOTE: We do consider it safe to return "no" here. The
* correct answer would be "We do not know" instead of
* "No push needed", but it is quite hard to change
* the submodule pointer without having the submodule
* around. If a user did however change the submodules
* without having the submodule around, this indicates
* an expert who knows what they are doing or a
* maintainer integrating work from other people. In
* both cases it should be safe to skip this check.
*/
return 0;
if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) {
struct child_process cp = CHILD_PROCESS_INIT;
struct strbuf buf = STRBUF_INIT;
int needs_pushing = 0;
argv_array_push(&cp.args, "rev-list");
oid_array_for_each_unique(commits, append_oid_to_argv, &cp.args);
argv_array_pushl(&cp.args, "--not", "--remotes", "-n", "1" , NULL);
prepare_submodule_repo_env(&cp.env_array);
cp.git_cmd = 1;
cp.no_stdin = 1;
cp.out = -1;
cp.dir = path;
if (start_command(&cp))
die("Could not run 'git rev-list <commits> --not --remotes -n 1' command in submodule %s",
path);
if (strbuf_read(&buf, cp.out, 41))
needs_pushing = 1;
finish_command(&cp);
close(cp.out);
strbuf_release(&buf);
return needs_pushing;
}
return 0;
}
static struct oid_array *submodule_commits(struct string_list *submodules,
const char *path)
{
struct string_list_item *item;
item = string_list_insert(submodules, path);
if (item->util)
return (struct oid_array *) item->util;
/* NEEDSWORK: should we have oid_array_init()? */
item->util = xcalloc(1, sizeof(struct oid_array));
return (struct oid_array *) item->util;
}
static void collect_submodules_from_diff(struct diff_queue_struct *q,
struct diff_options *options,
void *data)
{
int i;
struct string_list *submodules = data;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
struct oid_array *commits;
if (!S_ISGITLINK(p->two->mode))
continue;
commits = submodule_commits(submodules, p->two->path);
oid_array_append(commits, &p->two->oid);
}
}
static void find_unpushed_submodule_commits(struct commit *commit,
struct string_list *needs_pushing)
{
struct rev_info rev;
init_revisions(&rev, NULL);
rev.diffopt.output_format |= DIFF_FORMAT_CALLBACK;
rev.diffopt.format_callback = collect_submodules_from_diff;
rev.diffopt.format_callback_data = needs_pushing;
diff_tree_combined_merge(commit, 1, &rev);
}
static void free_submodules_sha1s(struct string_list *submodules)
{
struct string_list_item *item;
for_each_string_list_item(item, submodules)
oid_array_clear((struct oid_array *) item->util);
string_list_clear(submodules, 1);
}
int find_unpushed_submodules(struct oid_array *commits,
const char *remotes_name, struct string_list *needs_pushing)
{
struct rev_info rev;
struct commit *commit;
struct string_list submodules = STRING_LIST_INIT_DUP;
struct string_list_item *submodule;
struct argv_array argv = ARGV_ARRAY_INIT;
init_revisions(&rev, NULL);
/* argv.argv[0] will be ignored by setup_revisions */
argv_array_push(&argv, "find_unpushed_submodules");
oid_array_for_each_unique(commits, append_oid_to_argv, &argv);
argv_array_push(&argv, "--not");
argv_array_pushf(&argv, "--remotes=%s", remotes_name);
setup_revisions(argv.argc, argv.argv, &rev, NULL);
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
while ((commit = get_revision(&rev)) != NULL)
find_unpushed_submodule_commits(commit, &submodules);
reset_revision_walk();
argv_array_clear(&argv);
for_each_string_list_item(submodule, &submodules) {
struct oid_array *commits = (struct oid_array *) submodule->util;
if (submodule_needs_pushing(submodule->string, commits))
string_list_insert(needs_pushing, submodule->string);
}
free_submodules_sha1s(&submodules);
return needs_pushing->nr;
}
static int push_submodule(const char *path,
const struct remote *remote,
const char **refspec, int refspec_nr,
const struct string_list *push_options,
int dry_run)
{
if (add_submodule_odb(path))
return 1;
if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) {
struct child_process cp = CHILD_PROCESS_INIT;
argv_array_push(&cp.args, "push");
if (dry_run)
argv_array_push(&cp.args, "--dry-run");
if (push_options && push_options->nr) {
const struct string_list_item *item;
for_each_string_list_item(item, push_options)
argv_array_pushf(&cp.args, "--push-option=%s",
item->string);
}
if (remote->origin != REMOTE_UNCONFIGURED) {
int i;
argv_array_push(&cp.args, remote->name);
for (i = 0; i < refspec_nr; i++)
argv_array_push(&cp.args, refspec[i]);
}
prepare_submodule_repo_env(&cp.env_array);
cp.git_cmd = 1;
cp.no_stdin = 1;
cp.dir = path;
if (run_command(&cp))
return 0;
close(cp.out);
}
return 1;
}
/*
* Perform a check in the submodule to see if the remote and refspec work.
* Die if the submodule can't be pushed.
*/
static void submodule_push_check(const char *path, const struct remote *remote,
const char **refspec, int refspec_nr)
{
struct child_process cp = CHILD_PROCESS_INIT;
int i;
argv_array_push(&cp.args, "submodule--helper");
argv_array_push(&cp.args, "push-check");
argv_array_push(&cp.args, remote->name);
for (i = 0; i < refspec_nr; i++)
argv_array_push(&cp.args, refspec[i]);
prepare_submodule_repo_env(&cp.env_array);
cp.git_cmd = 1;
cp.no_stdin = 1;
cp.no_stdout = 1;
cp.dir = path;
/*
* Simply indicate if 'submodule--helper push-check' failed.
* More detailed error information will be provided by the
* child process.
*/
if (run_command(&cp))
die("process for submodule '%s' failed", path);
}
int push_unpushed_submodules(struct oid_array *commits,
const struct remote *remote,
const char **refspec, int refspec_nr,
const struct string_list *push_options,
int dry_run)
{
int i, ret = 1;
struct string_list needs_pushing = STRING_LIST_INIT_DUP;
if (!find_unpushed_submodules(commits, remote->name, &needs_pushing))
return 1;
/*
* Verify that the remote and refspec can be propagated to all
* submodules. This check can be skipped if the remote and refspec
* won't be propagated due to the remote being unconfigured (e.g. a URL
* instead of a remote name).
*/
if (remote->origin != REMOTE_UNCONFIGURED)
for (i = 0; i < needs_pushing.nr; i++)
submodule_push_check(needs_pushing.items[i].string,
remote, refspec, refspec_nr);
/* Actually push the submodules */
for (i = 0; i < needs_pushing.nr; i++) {
const char *path = needs_pushing.items[i].string;
fprintf(stderr, "Pushing submodule '%s'\n", path);
if (!push_submodule(path, remote, refspec, refspec_nr,
push_options, dry_run)) {
fprintf(stderr, "Unable to push submodule '%s'\n", path);
ret = 0;
}
}
string_list_clear(&needs_pushing, 0);
return ret;
}
static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
{
int is_present = 0;
if (!add_submodule_odb(path) && lookup_commit_reference(sha1)) {
/* Even if the submodule is checked out and the commit is
* present, make sure it is reachable from a ref. */
struct child_process cp = CHILD_PROCESS_INIT;
const char *argv[] = {"rev-list", "-n", "1", NULL, "--not", "--all", NULL};
struct strbuf buf = STRBUF_INIT;
argv[3] = sha1_to_hex(sha1);
cp.argv = argv;
prepare_submodule_repo_env(&cp.env_array);
cp.git_cmd = 1;
cp.no_stdin = 1;
cp.dir = path;
if (!capture_command(&cp, &buf, 1024) && !buf.len)
is_present = 1;
strbuf_release(&buf);
}
return is_present;
}
static void submodule_collect_changed_cb(struct diff_queue_struct *q,
struct diff_options *options,
void *data)
{
int i;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
if (!S_ISGITLINK(p->two->mode))
continue;
if (S_ISGITLINK(p->one->mode)) {
/* NEEDSWORK: We should honor the name configured in
* the .gitmodules file of the commit we are examining
* here to be able to correctly follow submodules
* being moved around. */
struct string_list_item *path;
path = unsorted_string_list_lookup(&changed_submodule_paths, p->two->path);
if (!path && !is_submodule_commit_present(p->two->path, p->two->oid.hash))
string_list_append(&changed_submodule_paths, xstrdup(p->two->path));
} else {
/* Submodule is new or was moved here */
/* NEEDSWORK: When the .git directories of submodules
* live inside the superprojects .git directory some
* day we should fetch new submodules directly into
* that location too when config or options request
* that so they can be checked out from there. */
continue;
}
}
}
static int add_sha1_to_array(const char *ref, const struct object_id *oid,
int flags, void *data)
{
oid_array_append(data, oid);
return 0;
}
void check_for_new_submodule_commits(struct object_id *oid)
{
if (!initialized_fetch_ref_tips) {
for_each_ref(add_sha1_to_array, &ref_tips_before_fetch);
initialized_fetch_ref_tips = 1;
}
oid_array_append(&ref_tips_after_fetch, oid);
}
static int add_oid_to_argv(const struct object_id *oid, void *data)
{
argv_array_push(data, oid_to_hex(oid));
return 0;
}
static void calculate_changed_submodule_paths(void)
{
struct rev_info rev;
struct commit *commit;
struct argv_array argv = ARGV_ARRAY_INIT;
/* No need to check if there are no submodules configured */
if (!submodule_from_path(NULL, NULL))
return;
init_revisions(&rev, NULL);
argv_array_push(&argv, "--"); /* argv[0] program name */
oid_array_for_each_unique(&ref_tips_after_fetch,
add_oid_to_argv, &argv);
argv_array_push(&argv, "--not");
oid_array_for_each_unique(&ref_tips_before_fetch,
add_oid_to_argv, &argv);
setup_revisions(argv.argc, argv.argv, &rev, NULL);
if (prepare_revision_walk(&rev))
die("revision walk setup failed");
/*
* Collect all submodules (whether checked out or not) for which new
* commits have been recorded upstream in "changed_submodule_paths".