-
Notifications
You must be signed in to change notification settings - Fork 25.3k
/
fetch.c
2332 lines (2032 loc) · 64.5 KB
/
fetch.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
/*
* "git fetch"
*/
#include "cache.h"
#include "config.h"
#include "repository.h"
#include "refs.h"
#include "refspec.h"
#include "object-store.h"
#include "oidset.h"
#include "commit.h"
#include "builtin.h"
#include "string-list.h"
#include "remote.h"
#include "transport.h"
#include "run-command.h"
#include "parse-options.h"
#include "sigchain.h"
#include "submodule-config.h"
#include "submodule.h"
#include "connected.h"
#include "strvec.h"
#include "utf8.h"
#include "packfile.h"
#include "list-objects-filter-options.h"
#include "commit-reach.h"
#include "branch.h"
#include "promisor-remote.h"
#include "commit-graph.h"
#include "shallow.h"
#include "worktree.h"
#define FORCED_UPDATES_DELAY_WARNING_IN_MS (10 * 1000)
static const char * const builtin_fetch_usage[] = {
N_("git fetch [<options>] [<repository> [<refspec>...]]"),
N_("git fetch [<options>] <group>"),
N_("git fetch --multiple [<options>] [(<repository> | <group>)...]"),
N_("git fetch --all [<options>]"),
NULL
};
enum {
TAGS_UNSET = 0,
TAGS_DEFAULT = 1,
TAGS_SET = 2
};
static int fetch_prune_config = -1; /* unspecified */
static int fetch_show_forced_updates = 1;
static uint64_t forced_updates_ms = 0;
static int prefetch = 0;
static int prune = -1; /* unspecified */
#define PRUNE_BY_DEFAULT 0 /* do we prune by default? */
static int fetch_prune_tags_config = -1; /* unspecified */
static int prune_tags = -1; /* unspecified */
#define PRUNE_TAGS_BY_DEFAULT 0 /* do we prune tags by default? */
static int all, append, dry_run, force, keep, multiple, update_head_ok;
static int write_fetch_head = 1;
static int verbosity, deepen_relative, set_upstream, refetch;
static int progress = -1;
static int enable_auto_gc = 1;
static int tags = TAGS_DEFAULT, unshallow, update_shallow, deepen;
static int max_jobs = -1, submodule_fetch_jobs_config = -1;
static int fetch_parallel_config = 1;
static int atomic_fetch;
static enum transport_family family;
static const char *depth;
static const char *deepen_since;
static const char *upload_pack;
static struct string_list deepen_not = STRING_LIST_INIT_NODUP;
static struct strbuf default_rla = STRBUF_INIT;
static struct transport *gtransport;
static struct transport *gsecondary;
static const char *submodule_prefix = "";
static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
static int recurse_submodules_cli = RECURSE_SUBMODULES_DEFAULT;
static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
static int shown_url = 0;
static struct refspec refmap = REFSPEC_INIT_FETCH;
static struct list_objects_filter_options filter_options;
static struct string_list server_options = STRING_LIST_INIT_DUP;
static struct string_list negotiation_tip = STRING_LIST_INIT_NODUP;
static int fetch_write_commit_graph = -1;
static int stdin_refspecs = 0;
static int negotiate_only;
static int git_fetch_config(const char *k, const char *v, void *cb)
{
if (!strcmp(k, "fetch.prune")) {
fetch_prune_config = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "fetch.prunetags")) {
fetch_prune_tags_config = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "fetch.showforcedupdates")) {
fetch_show_forced_updates = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "submodule.recurse")) {
int r = git_config_bool(k, v) ?
RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
recurse_submodules = r;
}
if (!strcmp(k, "submodule.fetchjobs")) {
submodule_fetch_jobs_config = parse_submodule_fetchjobs(k, v);
return 0;
} else if (!strcmp(k, "fetch.recursesubmodules")) {
recurse_submodules = parse_fetch_recurse_submodules_arg(k, v);
return 0;
}
if (!strcmp(k, "fetch.parallel")) {
fetch_parallel_config = git_config_int(k, v);
if (fetch_parallel_config < 0)
die(_("fetch.parallel cannot be negative"));
return 0;
}
return git_default_config(k, v, cb);
}
static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
{
BUG_ON_OPT_NEG(unset);
/*
* "git fetch --refmap='' origin foo"
* can be used to tell the command not to store anywhere
*/
refspec_append(&refmap, arg);
return 0;
}
static struct option builtin_fetch_options[] = {
OPT__VERBOSITY(&verbosity),
OPT_BOOL(0, "all", &all,
N_("fetch from all remotes")),
OPT_BOOL(0, "set-upstream", &set_upstream,
N_("set upstream for git pull/fetch")),
OPT_BOOL('a', "append", &append,
N_("append to .git/FETCH_HEAD instead of overwriting")),
OPT_BOOL(0, "atomic", &atomic_fetch,
N_("use atomic transaction to update references")),
OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
N_("path to upload pack on remote end")),
OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
OPT_BOOL('m', "multiple", &multiple,
N_("fetch from multiple remotes")),
OPT_SET_INT('t', "tags", &tags,
N_("fetch all tags and associated objects"), TAGS_SET),
OPT_SET_INT('n', NULL, &tags,
N_("do not fetch all tags (--no-tags)"), TAGS_UNSET),
OPT_INTEGER('j', "jobs", &max_jobs,
N_("number of submodules fetched in parallel")),
OPT_BOOL(0, "prefetch", &prefetch,
N_("modify the refspec to place all refs within refs/prefetch/")),
OPT_BOOL('p', "prune", &prune,
N_("prune remote-tracking branches no longer on remote")),
OPT_BOOL('P', "prune-tags", &prune_tags,
N_("prune local tags no longer on remote and clobber changed tags")),
OPT_CALLBACK_F(0, "recurse-submodules", &recurse_submodules_cli, N_("on-demand"),
N_("control recursive fetching of submodules"),
PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules),
OPT_BOOL(0, "dry-run", &dry_run,
N_("dry run")),
OPT_BOOL(0, "write-fetch-head", &write_fetch_head,
N_("write fetched references to the FETCH_HEAD file")),
OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
OPT_BOOL('u', "update-head-ok", &update_head_ok,
N_("allow updating of HEAD ref")),
OPT_BOOL(0, "progress", &progress, N_("force progress reporting")),
OPT_STRING(0, "depth", &depth, N_("depth"),
N_("deepen history of shallow clone")),
OPT_STRING(0, "shallow-since", &deepen_since, N_("time"),
N_("deepen history of shallow repository based on time")),
OPT_STRING_LIST(0, "shallow-exclude", &deepen_not, N_("revision"),
N_("deepen history of shallow clone, excluding rev")),
OPT_INTEGER(0, "deepen", &deepen_relative,
N_("deepen history of shallow clone")),
OPT_SET_INT_F(0, "unshallow", &unshallow,
N_("convert to a complete repository"),
1, PARSE_OPT_NONEG),
OPT_SET_INT_F(0, "refetch", &refetch,
N_("re-fetch without negotiating common commits"),
1, PARSE_OPT_NONEG),
{ OPTION_STRING, 0, "submodule-prefix", &submodule_prefix, N_("dir"),
N_("prepend this to submodule path output"), PARSE_OPT_HIDDEN },
OPT_CALLBACK_F(0, "recurse-submodules-default",
&recurse_submodules_default, N_("on-demand"),
N_("default for recursive fetching of submodules "
"(lower priority than config files)"),
PARSE_OPT_HIDDEN, option_fetch_parse_recurse_submodules),
OPT_BOOL(0, "update-shallow", &update_shallow,
N_("accept refs that update .git/shallow")),
OPT_CALLBACK_F(0, "refmap", NULL, N_("refmap"),
N_("specify fetch refmap"), PARSE_OPT_NONEG, parse_refmap_arg),
OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
TRANSPORT_FAMILY_IPV4),
OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
TRANSPORT_FAMILY_IPV6),
OPT_STRING_LIST(0, "negotiation-tip", &negotiation_tip, N_("revision"),
N_("report that we have only objects reachable from this object")),
OPT_BOOL(0, "negotiate-only", &negotiate_only,
N_("do not fetch a packfile; instead, print ancestors of negotiation tips")),
OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
OPT_BOOL(0, "auto-maintenance", &enable_auto_gc,
N_("run 'maintenance --auto' after fetching")),
OPT_BOOL(0, "auto-gc", &enable_auto_gc,
N_("run 'maintenance --auto' after fetching")),
OPT_BOOL(0, "show-forced-updates", &fetch_show_forced_updates,
N_("check for forced-updates on all updated branches")),
OPT_BOOL(0, "write-commit-graph", &fetch_write_commit_graph,
N_("write the commit-graph after fetching")),
OPT_BOOL(0, "stdin", &stdin_refspecs,
N_("accept refspecs from stdin")),
OPT_END()
};
static void unlock_pack(unsigned int flags)
{
if (gtransport)
transport_unlock_pack(gtransport, flags);
if (gsecondary)
transport_unlock_pack(gsecondary, flags);
}
static void unlock_pack_atexit(void)
{
unlock_pack(0);
}
static void unlock_pack_on_signal(int signo)
{
unlock_pack(TRANSPORT_UNLOCK_PACK_IN_SIGNAL_HANDLER);
sigchain_pop(signo);
raise(signo);
}
static void add_merge_config(struct ref **head,
const struct ref *remote_refs,
struct branch *branch,
struct ref ***tail)
{
int i;
for (i = 0; i < branch->merge_nr; i++) {
struct ref *rm, **old_tail = *tail;
struct refspec_item refspec;
for (rm = *head; rm; rm = rm->next) {
if (branch_merge_matches(branch, i, rm->name)) {
rm->fetch_head_status = FETCH_HEAD_MERGE;
break;
}
}
if (rm)
continue;
/*
* Not fetched to a remote-tracking branch? We need to fetch
* it anyway to allow this branch's "branch.$name.merge"
* to be honored by 'git pull', but we do not have to
* fail if branch.$name.merge is misconfigured to point
* at a nonexisting branch. If we were indeed called by
* 'git pull', it will notice the misconfiguration because
* there is no entry in the resulting FETCH_HEAD marked
* for merging.
*/
memset(&refspec, 0, sizeof(refspec));
refspec.src = branch->merge[i]->src;
get_fetch_map(remote_refs, &refspec, tail, 1);
for (rm = *old_tail; rm; rm = rm->next)
rm->fetch_head_status = FETCH_HEAD_MERGE;
}
}
static void create_fetch_oidset(struct ref **head, struct oidset *out)
{
struct ref *rm = *head;
while (rm) {
oidset_insert(out, &rm->old_oid);
rm = rm->next;
}
}
struct refname_hash_entry {
struct hashmap_entry ent;
struct object_id oid;
int ignore;
char refname[FLEX_ARRAY];
};
static int refname_hash_entry_cmp(const void *hashmap_cmp_fn_data,
const struct hashmap_entry *eptr,
const struct hashmap_entry *entry_or_key,
const void *keydata)
{
const struct refname_hash_entry *e1, *e2;
e1 = container_of(eptr, const struct refname_hash_entry, ent);
e2 = container_of(entry_or_key, const struct refname_hash_entry, ent);
return strcmp(e1->refname, keydata ? keydata : e2->refname);
}
static struct refname_hash_entry *refname_hash_add(struct hashmap *map,
const char *refname,
const struct object_id *oid)
{
struct refname_hash_entry *ent;
size_t len = strlen(refname);
FLEX_ALLOC_MEM(ent, refname, refname, len);
hashmap_entry_init(&ent->ent, strhash(refname));
oidcpy(&ent->oid, oid);
hashmap_add(map, &ent->ent);
return ent;
}
static int add_one_refname(const char *refname,
const struct object_id *oid,
int flag, void *cbdata)
{
struct hashmap *refname_map = cbdata;
(void) refname_hash_add(refname_map, refname, oid);
return 0;
}
static void refname_hash_init(struct hashmap *map)
{
hashmap_init(map, refname_hash_entry_cmp, NULL, 0);
}
static int refname_hash_exists(struct hashmap *map, const char *refname)
{
return !!hashmap_get_from_hash(map, strhash(refname), refname);
}
static void clear_item(struct refname_hash_entry *item)
{
item->ignore = 1;
}
static void add_already_queued_tags(const char *refname,
const struct object_id *old_oid,
const struct object_id *new_oid,
void *cb_data)
{
struct hashmap *queued_tags = cb_data;
if (starts_with(refname, "refs/tags/") && new_oid)
(void) refname_hash_add(queued_tags, refname, new_oid);
}
static void find_non_local_tags(const struct ref *refs,
struct ref_transaction *transaction,
struct ref **head,
struct ref ***tail)
{
struct hashmap existing_refs;
struct hashmap remote_refs;
struct oidset fetch_oids = OIDSET_INIT;
struct string_list remote_refs_list = STRING_LIST_INIT_NODUP;
struct string_list_item *remote_ref_item;
const struct ref *ref;
struct refname_hash_entry *item = NULL;
const int quick_flags = OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT;
refname_hash_init(&existing_refs);
refname_hash_init(&remote_refs);
create_fetch_oidset(head, &fetch_oids);
for_each_ref(add_one_refname, &existing_refs);
/*
* If we already have a transaction, then we need to filter out all
* tags which have already been queued up.
*/
if (transaction)
ref_transaction_for_each_queued_update(transaction,
add_already_queued_tags,
&existing_refs);
for (ref = refs; ref; ref = ref->next) {
if (!starts_with(ref->name, "refs/tags/"))
continue;
/*
* The peeled ref always follows the matching base
* ref, so if we see a peeled ref that we don't want
* to fetch then we can mark the ref entry in the list
* as one to ignore by setting util to NULL.
*/
if (ends_with(ref->name, "^{}")) {
if (item &&
!has_object_file_with_flags(&ref->old_oid, quick_flags) &&
!oidset_contains(&fetch_oids, &ref->old_oid) &&
!has_object_file_with_flags(&item->oid, quick_flags) &&
!oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
item = NULL;
continue;
}
/*
* If item is non-NULL here, then we previously saw a
* ref not followed by a peeled reference, so we need
* to check if it is a lightweight tag that we want to
* fetch.
*/
if (item &&
!has_object_file_with_flags(&item->oid, quick_flags) &&
!oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
item = NULL;
/* skip duplicates and refs that we already have */
if (refname_hash_exists(&remote_refs, ref->name) ||
refname_hash_exists(&existing_refs, ref->name))
continue;
item = refname_hash_add(&remote_refs, ref->name, &ref->old_oid);
string_list_insert(&remote_refs_list, ref->name);
}
hashmap_clear_and_free(&existing_refs, struct refname_hash_entry, ent);
/*
* We may have a final lightweight tag that needs to be
* checked to see if it needs fetching.
*/
if (item &&
!has_object_file_with_flags(&item->oid, quick_flags) &&
!oidset_contains(&fetch_oids, &item->oid))
clear_item(item);
/*
* For all the tags in the remote_refs_list,
* add them to the list of refs to be fetched
*/
for_each_string_list_item(remote_ref_item, &remote_refs_list) {
const char *refname = remote_ref_item->string;
struct ref *rm;
unsigned int hash = strhash(refname);
item = hashmap_get_entry_from_hash(&remote_refs, hash, refname,
struct refname_hash_entry, ent);
if (!item)
BUG("unseen remote ref?");
/* Unless we have already decided to ignore this item... */
if (item->ignore)
continue;
rm = alloc_ref(item->refname);
rm->peer_ref = alloc_ref(item->refname);
oidcpy(&rm->old_oid, &item->oid);
**tail = rm;
*tail = &rm->next;
}
hashmap_clear_and_free(&remote_refs, struct refname_hash_entry, ent);
string_list_clear(&remote_refs_list, 0);
oidset_clear(&fetch_oids);
}
static void filter_prefetch_refspec(struct refspec *rs)
{
int i;
if (!prefetch)
return;
for (i = 0; i < rs->nr; i++) {
struct strbuf new_dst = STRBUF_INIT;
char *old_dst;
const char *sub = NULL;
if (rs->items[i].negative)
continue;
if (!rs->items[i].dst ||
(rs->items[i].src &&
!strncmp(rs->items[i].src, "refs/tags/", 10))) {
int j;
free(rs->items[i].src);
free(rs->items[i].dst);
for (j = i + 1; j < rs->nr; j++) {
rs->items[j - 1] = rs->items[j];
rs->raw[j - 1] = rs->raw[j];
}
rs->nr--;
i--;
continue;
}
old_dst = rs->items[i].dst;
strbuf_addstr(&new_dst, "refs/prefetch/");
/*
* If old_dst starts with "refs/", then place
* sub after that prefix. Otherwise, start at
* the beginning of the string.
*/
if (!skip_prefix(old_dst, "refs/", &sub))
sub = old_dst;
strbuf_addstr(&new_dst, sub);
rs->items[i].dst = strbuf_detach(&new_dst, NULL);
rs->items[i].force = 1;
free(old_dst);
}
}
static struct ref *get_ref_map(struct remote *remote,
const struct ref *remote_refs,
struct refspec *rs,
int tags, int *autotags)
{
int i;
struct ref *rm;
struct ref *ref_map = NULL;
struct ref **tail = &ref_map;
/* opportunistically-updated references: */
struct ref *orefs = NULL, **oref_tail = &orefs;
struct hashmap existing_refs;
int existing_refs_populated = 0;
filter_prefetch_refspec(rs);
if (remote)
filter_prefetch_refspec(&remote->fetch);
if (rs->nr) {
struct refspec *fetch_refspec;
for (i = 0; i < rs->nr; i++) {
get_fetch_map(remote_refs, &rs->items[i], &tail, 0);
if (rs->items[i].dst && rs->items[i].dst[0])
*autotags = 1;
}
/* Merge everything on the command line (but not --tags) */
for (rm = ref_map; rm; rm = rm->next)
rm->fetch_head_status = FETCH_HEAD_MERGE;
/*
* For any refs that we happen to be fetching via
* command-line arguments, the destination ref might
* have been missing or have been different than the
* remote-tracking ref that would be derived from the
* configured refspec. In these cases, we want to
* take the opportunity to update their configured
* remote-tracking reference. However, we do not want
* to mention these entries in FETCH_HEAD at all, as
* they would simply be duplicates of existing
* entries, so we set them FETCH_HEAD_IGNORE below.
*
* We compute these entries now, based only on the
* refspecs specified on the command line. But we add
* them to the list following the refspecs resulting
* from the tags option so that one of the latter,
* which has FETCH_HEAD_NOT_FOR_MERGE, is not removed
* by ref_remove_duplicates() in favor of one of these
* opportunistic entries with FETCH_HEAD_IGNORE.
*/
if (refmap.nr)
fetch_refspec = &refmap;
else
fetch_refspec = &remote->fetch;
for (i = 0; i < fetch_refspec->nr; i++)
get_fetch_map(ref_map, &fetch_refspec->items[i], &oref_tail, 1);
} else if (refmap.nr) {
die("--refmap option is only meaningful with command-line refspec(s)");
} else {
/* Use the defaults */
struct branch *branch = branch_get(NULL);
int has_merge = branch_has_merge_config(branch);
if (remote &&
(remote->fetch.nr ||
/* Note: has_merge implies non-NULL branch->remote_name */
(has_merge && !strcmp(branch->remote_name, remote->name)))) {
for (i = 0; i < remote->fetch.nr; i++) {
get_fetch_map(remote_refs, &remote->fetch.items[i], &tail, 0);
if (remote->fetch.items[i].dst &&
remote->fetch.items[i].dst[0])
*autotags = 1;
if (!i && !has_merge && ref_map &&
!remote->fetch.items[0].pattern)
ref_map->fetch_head_status = FETCH_HEAD_MERGE;
}
/*
* if the remote we're fetching from is the same
* as given in branch.<name>.remote, we add the
* ref given in branch.<name>.merge, too.
*
* Note: has_merge implies non-NULL branch->remote_name
*/
if (has_merge &&
!strcmp(branch->remote_name, remote->name))
add_merge_config(&ref_map, remote_refs, branch, &tail);
} else if (!prefetch) {
ref_map = get_remote_ref(remote_refs, "HEAD");
if (!ref_map)
die(_("couldn't find remote ref HEAD"));
ref_map->fetch_head_status = FETCH_HEAD_MERGE;
tail = &ref_map->next;
}
}
if (tags == TAGS_SET)
/* also fetch all tags */
get_fetch_map(remote_refs, tag_refspec, &tail, 0);
else if (tags == TAGS_DEFAULT && *autotags)
find_non_local_tags(remote_refs, NULL, &ref_map, &tail);
/* Now append any refs to be updated opportunistically: */
*tail = orefs;
for (rm = orefs; rm; rm = rm->next) {
rm->fetch_head_status = FETCH_HEAD_IGNORE;
tail = &rm->next;
}
/*
* apply negative refspecs first, before we remove duplicates. This is
* necessary as negative refspecs might remove an otherwise conflicting
* duplicate.
*/
if (rs->nr)
ref_map = apply_negative_refspecs(ref_map, rs);
else
ref_map = apply_negative_refspecs(ref_map, &remote->fetch);
ref_map = ref_remove_duplicates(ref_map);
for (rm = ref_map; rm; rm = rm->next) {
if (rm->peer_ref) {
const char *refname = rm->peer_ref->name;
struct refname_hash_entry *peer_item;
unsigned int hash = strhash(refname);
if (!existing_refs_populated) {
refname_hash_init(&existing_refs);
for_each_ref(add_one_refname, &existing_refs);
existing_refs_populated = 1;
}
peer_item = hashmap_get_entry_from_hash(&existing_refs,
hash, refname,
struct refname_hash_entry, ent);
if (peer_item) {
struct object_id *old_oid = &peer_item->oid;
oidcpy(&rm->peer_ref->old_oid, old_oid);
}
}
}
if (existing_refs_populated)
hashmap_clear_and_free(&existing_refs, struct refname_hash_entry, ent);
return ref_map;
}
#define STORE_REF_ERROR_OTHER 1
#define STORE_REF_ERROR_DF_CONFLICT 2
static int s_update_ref(const char *action,
struct ref *ref,
struct ref_transaction *transaction,
int check_old)
{
char *msg;
char *rla = getenv("GIT_REFLOG_ACTION");
struct ref_transaction *our_transaction = NULL;
struct strbuf err = STRBUF_INIT;
int ret;
if (dry_run)
return 0;
if (!rla)
rla = default_rla.buf;
msg = xstrfmt("%s: %s", rla, action);
/*
* If no transaction was passed to us, we manage the transaction
* ourselves. Otherwise, we trust the caller to handle the transaction
* lifecycle.
*/
if (!transaction) {
transaction = our_transaction = ref_transaction_begin(&err);
if (!transaction) {
ret = STORE_REF_ERROR_OTHER;
goto out;
}
}
ret = ref_transaction_update(transaction, ref->name, &ref->new_oid,
check_old ? &ref->old_oid : NULL,
0, msg, &err);
if (ret) {
ret = STORE_REF_ERROR_OTHER;
goto out;
}
if (our_transaction) {
switch (ref_transaction_commit(our_transaction, &err)) {
case 0:
break;
case TRANSACTION_NAME_CONFLICT:
ret = STORE_REF_ERROR_DF_CONFLICT;
goto out;
default:
ret = STORE_REF_ERROR_OTHER;
goto out;
}
}
out:
ref_transaction_free(our_transaction);
if (ret)
error("%s", err.buf);
strbuf_release(&err);
free(msg);
return ret;
}
static int refcol_width = 10;
static int compact_format;
static void adjust_refcol_width(const struct ref *ref)
{
int max, rlen, llen, len;
/* uptodate lines are only shown on high verbosity level */
if (verbosity <= 0 && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
return;
max = term_columns();
rlen = utf8_strwidth(prettify_refname(ref->name));
llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
/*
* rough estimation to see if the output line is too long and
* should not be counted (we can't do precise calculation
* anyway because we don't know if the error explanation part
* will be printed in update_local_ref)
*/
if (compact_format) {
llen = 0;
max = max * 2 / 3;
}
len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
if (len >= max)
return;
/*
* Not precise calculation for compact mode because '*' can
* appear on the left hand side of '->' and shrink the column
* back.
*/
if (refcol_width < rlen)
refcol_width = rlen;
}
static void prepare_format_display(struct ref *ref_map)
{
struct ref *rm;
const char *format = "full";
if (verbosity < 0)
return;
git_config_get_string_tmp("fetch.output", &format);
if (!strcasecmp(format, "full"))
compact_format = 0;
else if (!strcasecmp(format, "compact"))
compact_format = 1;
else
die(_("invalid value for '%s': '%s'"),
"fetch.output", format);
for (rm = ref_map; rm; rm = rm->next) {
if (rm->status == REF_STATUS_REJECT_SHALLOW ||
!rm->peer_ref ||
!strcmp(rm->name, "HEAD"))
continue;
adjust_refcol_width(rm);
}
}
static void print_remote_to_local(struct strbuf *display,
const char *remote, const char *local)
{
strbuf_addf(display, "%-*s -> %s", refcol_width, remote, local);
}
static int find_and_replace(struct strbuf *haystack,
const char *needle,
const char *placeholder)
{
const char *p = NULL;
int plen, nlen;
nlen = strlen(needle);
if (ends_with(haystack->buf, needle))
p = haystack->buf + haystack->len - nlen;
else
p = strstr(haystack->buf, needle);
if (!p)
return 0;
if (p > haystack->buf && p[-1] != '/')
return 0;
plen = strlen(p);
if (plen > nlen && p[nlen] != '/')
return 0;
strbuf_splice(haystack, p - haystack->buf, nlen,
placeholder, strlen(placeholder));
return 1;
}
static void print_compact(struct strbuf *display,
const char *remote, const char *local)
{
struct strbuf r = STRBUF_INIT;
struct strbuf l = STRBUF_INIT;
if (!strcmp(remote, local)) {
strbuf_addf(display, "%-*s -> *", refcol_width, remote);
return;
}
strbuf_addstr(&r, remote);
strbuf_addstr(&l, local);
if (!find_and_replace(&r, local, "*"))
find_and_replace(&l, remote, "*");
print_remote_to_local(display, r.buf, l.buf);
strbuf_release(&r);
strbuf_release(&l);
}
static void format_display(struct strbuf *display, char code,
const char *summary, const char *error,
const char *remote, const char *local,
int summary_width)
{
int width;
if (verbosity < 0)
return;
width = (summary_width + strlen(summary) - gettext_width(summary));
strbuf_addf(display, "%c %-*s ", code, width, summary);
if (!compact_format)
print_remote_to_local(display, remote, local);
else
print_compact(display, remote, local);
if (error)
strbuf_addf(display, " (%s)", error);
}
static int update_local_ref(struct ref *ref,
struct ref_transaction *transaction,
const char *remote, const struct ref *remote_ref,
struct strbuf *display, int summary_width,
struct worktree **worktrees)
{
struct commit *current = NULL, *updated;
const struct worktree *wt;
const char *pretty_ref = prettify_refname(ref->name);
int fast_forward = 0;
if (!repo_has_object_file(the_repository, &ref->new_oid))
die(_("object %s not found"), oid_to_hex(&ref->new_oid));
if (oideq(&ref->old_oid, &ref->new_oid)) {
if (verbosity > 0)
format_display(display, '=', _("[up to date]"), NULL,
remote, pretty_ref, summary_width);
return 0;
}
if (!update_head_ok &&
(wt = find_shared_symref(worktrees, "HEAD", ref->name)) &&
!wt->is_bare && !is_null_oid(&ref->old_oid)) {
/*
* If this is the head, and it's not okay to update
* the head, and the old value of the head isn't empty...
*/
format_display(display, '!', _("[rejected]"),
wt->is_current ?
_("can't fetch in current branch") :
_("checked out in another worktree"),
remote, pretty_ref, summary_width);
return 1;
}
if (!is_null_oid(&ref->old_oid) &&
starts_with(ref->name, "refs/tags/")) {
if (force || ref->force) {
int r;
r = s_update_ref("updating tag", ref, transaction, 0);
format_display(display, r ? '!' : 't', _("[tag update]"),
r ? _("unable to update local ref") : NULL,
remote, pretty_ref, summary_width);
return r;
} else {
format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
remote, pretty_ref, summary_width);
return 1;
}
}
current = lookup_commit_reference_gently(the_repository,
&ref->old_oid, 1);
updated = lookup_commit_reference_gently(the_repository,
&ref->new_oid, 1);
if (!current || !updated) {
const char *msg;
const char *what;
int r;
/*
* Nicely describe the new ref we're fetching.
* Base this on the remote's ref name, as it's
* more likely to follow a standard layout.
*/
const char *name = remote_ref ? remote_ref->name : "";
if (starts_with(name, "refs/tags/")) {
msg = "storing tag";
what = _("[new tag]");
} else if (starts_with(name, "refs/heads/")) {
msg = "storing head";
what = _("[new branch]");
} else {
msg = "storing ref";
what = _("[new ref]");
}
r = s_update_ref(msg, ref, transaction, 0);
format_display(display, r ? '!' : '*', what,
r ? _("unable to update local ref") : NULL,
remote, pretty_ref, summary_width);
return r;
}
if (fetch_show_forced_updates) {
uint64_t t_before = getnanotime();
fast_forward = in_merge_bases(current, updated);
forced_updates_ms += (getnanotime() - t_before) / 1000000;
} else {
fast_forward = 1;
}
if (fast_forward) {
struct strbuf quickref = STRBUF_INIT;
int r;
strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
strbuf_addstr(&quickref, "..");
strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
r = s_update_ref("fast-forward", ref, transaction, 1);
format_display(display, r ? '!' : ' ', quickref.buf,
r ? _("unable to update local ref") : NULL,
remote, pretty_ref, summary_width);
strbuf_release(&quickref);
return r;
} else if (force || ref->force) {
struct strbuf quickref = STRBUF_INIT;
int r;
strbuf_add_unique_abbrev(&quickref, ¤t->object.oid, DEFAULT_ABBREV);
strbuf_addstr(&quickref, "...");
strbuf_add_unique_abbrev(&quickref, &ref->new_oid, DEFAULT_ABBREV);
r = s_update_ref("forced-update", ref, transaction, 1);
format_display(display, r ? '!' : '+', quickref.buf,
r ? _("unable to update local ref") : _("forced update"),
remote, pretty_ref, summary_width);
strbuf_release(&quickref);
return r;
} else {
format_display(display, '!', _("[rejected]"), _("non-fast-forward"),
remote, pretty_ref, summary_width);