11 #include "string-list.h"
12 #include "mergesort.h"
13 #include "argv-array.h"
15 enum map_direction
{ FROM_SRC
, FROM_DST
};
17 struct counted_string
{
24 struct counted_string
*instead_of
;
29 struct rewrite
**rewrite
;
34 static struct remote
**remotes
;
35 static int remotes_alloc
;
36 static int remotes_nr
;
37 static struct hashmap remotes_hash
;
39 static struct branch
**branches
;
40 static int branches_alloc
;
41 static int branches_nr
;
43 static struct branch
*current_branch
;
44 static const char *pushremote_name
;
46 static struct rewrites rewrites
;
47 static struct rewrites rewrites_push
;
49 static int valid_remote(const struct remote
*remote
)
51 return (!!remote
->url
) || (!!remote
->foreign_vcs
);
54 static const char *alias_url(const char *url
, struct rewrites
*r
)
57 struct counted_string
*longest
;
62 for (i
= 0; i
< r
->rewrite_nr
; i
++) {
65 for (j
= 0; j
< r
->rewrite
[i
]->instead_of_nr
; j
++) {
66 if (starts_with(url
, r
->rewrite
[i
]->instead_of
[j
].s
) &&
68 longest
->len
< r
->rewrite
[i
]->instead_of
[j
].len
)) {
69 longest
= &(r
->rewrite
[i
]->instead_of
[j
]);
77 return xstrfmt("%s%s", r
->rewrite
[longest_i
]->base
, url
+ longest
->len
);
80 static void add_push_refspec(struct remote
*remote
, const char *ref
)
82 ALLOC_GROW(remote
->push_refspec
,
83 remote
->push_refspec_nr
+ 1,
84 remote
->push_refspec_alloc
);
85 remote
->push_refspec
[remote
->push_refspec_nr
++] = ref
;
88 static void add_fetch_refspec(struct remote
*remote
, const char *ref
)
90 ALLOC_GROW(remote
->fetch_refspec
,
91 remote
->fetch_refspec_nr
+ 1,
92 remote
->fetch_refspec_alloc
);
93 remote
->fetch_refspec
[remote
->fetch_refspec_nr
++] = ref
;
96 void add_prune_tags_to_fetch_refspec(struct remote
*remote
)
98 int nr
= remote
->fetch_refspec_nr
;
100 int size
= sizeof(struct refspec_item
);
102 remote
->fetch
= xrealloc(remote
->fetch
, size
* bufsize
);
103 memcpy(&remote
->fetch
[nr
], tag_refspec
, size
);
104 add_fetch_refspec(remote
, xstrdup(TAG_REFSPEC
));
107 static void add_url(struct remote
*remote
, const char *url
)
109 ALLOC_GROW(remote
->url
, remote
->url_nr
+ 1, remote
->url_alloc
);
110 remote
->url
[remote
->url_nr
++] = url
;
113 static void add_pushurl(struct remote
*remote
, const char *pushurl
)
115 ALLOC_GROW(remote
->pushurl
, remote
->pushurl_nr
+ 1, remote
->pushurl_alloc
);
116 remote
->pushurl
[remote
->pushurl_nr
++] = pushurl
;
119 static void add_pushurl_alias(struct remote
*remote
, const char *url
)
121 const char *pushurl
= alias_url(url
, &rewrites_push
);
123 add_pushurl(remote
, pushurl
);
126 static void add_url_alias(struct remote
*remote
, const char *url
)
128 add_url(remote
, alias_url(url
, &rewrites
));
129 add_pushurl_alias(remote
, url
);
132 struct remotes_hash_key
{
137 static int remotes_hash_cmp(const void *unused_cmp_data
,
139 const void *entry_or_key
,
142 const struct remote
*a
= entry
;
143 const struct remote
*b
= entry_or_key
;
144 const struct remotes_hash_key
*key
= keydata
;
147 return strncmp(a
->name
, key
->str
, key
->len
) || a
->name
[key
->len
];
149 return strcmp(a
->name
, b
->name
);
152 static inline void init_remotes_hash(void)
154 if (!remotes_hash
.cmpfn
)
155 hashmap_init(&remotes_hash
, remotes_hash_cmp
, NULL
, 0);
158 static struct remote
*make_remote(const char *name
, int len
)
160 struct remote
*ret
, *replaced
;
161 struct remotes_hash_key lookup
;
162 struct hashmap_entry lookup_entry
;
170 hashmap_entry_init(&lookup_entry
, memhash(name
, len
));
172 if ((ret
= hashmap_get(&remotes_hash
, &lookup_entry
, &lookup
)) != NULL
)
175 ret
= xcalloc(1, sizeof(struct remote
));
176 ret
->prune
= -1; /* unspecified */
177 ret
->prune_tags
= -1; /* unspecified */
178 ALLOC_GROW(remotes
, remotes_nr
+ 1, remotes_alloc
);
179 remotes
[remotes_nr
++] = ret
;
180 ret
->name
= xstrndup(name
, len
);
182 hashmap_entry_init(ret
, lookup_entry
.hash
);
183 replaced
= hashmap_put(&remotes_hash
, ret
);
184 assert(replaced
== NULL
); /* no previous entry overwritten */
188 static void add_merge(struct branch
*branch
, const char *name
)
190 ALLOC_GROW(branch
->merge_name
, branch
->merge_nr
+ 1,
191 branch
->merge_alloc
);
192 branch
->merge_name
[branch
->merge_nr
++] = name
;
195 static struct branch
*make_branch(const char *name
, int len
)
200 for (i
= 0; i
< branches_nr
; i
++) {
201 if (len
? (!strncmp(name
, branches
[i
]->name
, len
) &&
202 !branches
[i
]->name
[len
]) :
203 !strcmp(name
, branches
[i
]->name
))
207 ALLOC_GROW(branches
, branches_nr
+ 1, branches_alloc
);
208 ret
= xcalloc(1, sizeof(struct branch
));
209 branches
[branches_nr
++] = ret
;
211 ret
->name
= xstrndup(name
, len
);
213 ret
->name
= xstrdup(name
);
214 ret
->refname
= xstrfmt("refs/heads/%s", ret
->name
);
219 static struct rewrite
*make_rewrite(struct rewrites
*r
, const char *base
, int len
)
224 for (i
= 0; i
< r
->rewrite_nr
; i
++) {
226 ? (len
== r
->rewrite
[i
]->baselen
&&
227 !strncmp(base
, r
->rewrite
[i
]->base
, len
))
228 : !strcmp(base
, r
->rewrite
[i
]->base
))
229 return r
->rewrite
[i
];
232 ALLOC_GROW(r
->rewrite
, r
->rewrite_nr
+ 1, r
->rewrite_alloc
);
233 ret
= xcalloc(1, sizeof(struct rewrite
));
234 r
->rewrite
[r
->rewrite_nr
++] = ret
;
236 ret
->base
= xstrndup(base
, len
);
240 ret
->base
= xstrdup(base
);
241 ret
->baselen
= strlen(base
);
246 static void add_instead_of(struct rewrite
*rewrite
, const char *instead_of
)
248 ALLOC_GROW(rewrite
->instead_of
, rewrite
->instead_of_nr
+ 1, rewrite
->instead_of_alloc
);
249 rewrite
->instead_of
[rewrite
->instead_of_nr
].s
= instead_of
;
250 rewrite
->instead_of
[rewrite
->instead_of_nr
].len
= strlen(instead_of
);
251 rewrite
->instead_of_nr
++;
254 static const char *skip_spaces(const char *s
)
261 static void read_remotes_file(struct remote
*remote
)
263 struct strbuf buf
= STRBUF_INIT
;
264 FILE *f
= fopen_or_warn(git_path("remotes/%s", remote
->name
), "r");
268 remote
->configured_in_repo
= 1;
269 remote
->origin
= REMOTE_REMOTES
;
270 while (strbuf_getline(&buf
, f
) != EOF
) {
275 if (skip_prefix(buf
.buf
, "URL:", &v
))
276 add_url_alias(remote
, xstrdup(skip_spaces(v
)));
277 else if (skip_prefix(buf
.buf
, "Push:", &v
))
278 add_push_refspec(remote
, xstrdup(skip_spaces(v
)));
279 else if (skip_prefix(buf
.buf
, "Pull:", &v
))
280 add_fetch_refspec(remote
, xstrdup(skip_spaces(v
)));
282 strbuf_release(&buf
);
286 static void read_branches_file(struct remote
*remote
)
289 struct strbuf buf
= STRBUF_INIT
;
290 FILE *f
= fopen_or_warn(git_path("branches/%s", remote
->name
), "r");
295 strbuf_getline_lf(&buf
, f
);
299 strbuf_release(&buf
);
303 remote
->configured_in_repo
= 1;
304 remote
->origin
= REMOTE_BRANCHES
;
307 * The branches file would have URL and optionally
308 * #branch specified. The "master" (or specified) branch is
309 * fetched and stored in the local branch matching the
312 frag
= strchr(buf
.buf
, '#');
318 add_url_alias(remote
, strbuf_detach(&buf
, NULL
));
319 add_fetch_refspec(remote
, xstrfmt("refs/heads/%s:refs/heads/%s",
320 frag
, remote
->name
));
323 * Cogito compatible push: push current HEAD to remote #branch
324 * (master if missing)
326 add_push_refspec(remote
, xstrfmt("HEAD:refs/heads/%s", frag
));
327 remote
->fetch_tags
= 1; /* always auto-follow */
330 static int handle_config(const char *key
, const char *value
, void *cb
)
335 struct remote
*remote
;
336 struct branch
*branch
;
337 if (parse_config_key(key
, "branch", &name
, &namelen
, &subkey
) >= 0) {
340 branch
= make_branch(name
, namelen
);
341 if (!strcmp(subkey
, "remote")) {
342 return git_config_string(&branch
->remote_name
, key
, value
);
343 } else if (!strcmp(subkey
, "pushremote")) {
344 return git_config_string(&branch
->pushremote_name
, key
, value
);
345 } else if (!strcmp(subkey
, "merge")) {
347 return config_error_nonbool(key
);
348 add_merge(branch
, xstrdup(value
));
352 if (parse_config_key(key
, "url", &name
, &namelen
, &subkey
) >= 0) {
353 struct rewrite
*rewrite
;
356 if (!strcmp(subkey
, "insteadof")) {
357 rewrite
= make_rewrite(&rewrites
, name
, namelen
);
359 return config_error_nonbool(key
);
360 add_instead_of(rewrite
, xstrdup(value
));
361 } else if (!strcmp(subkey
, "pushinsteadof")) {
362 rewrite
= make_rewrite(&rewrites_push
, name
, namelen
);
364 return config_error_nonbool(key
);
365 add_instead_of(rewrite
, xstrdup(value
));
369 if (parse_config_key(key
, "remote", &name
, &namelen
, &subkey
) < 0)
372 /* Handle remote.* variables */
373 if (!name
&& !strcmp(subkey
, "pushdefault"))
374 return git_config_string(&pushremote_name
, key
, value
);
378 /* Handle remote.<name>.* variables */
380 warning("Config remote shorthand cannot begin with '/': %s",
384 remote
= make_remote(name
, namelen
);
385 remote
->origin
= REMOTE_CONFIG
;
386 if (current_config_scope() == CONFIG_SCOPE_REPO
)
387 remote
->configured_in_repo
= 1;
388 if (!strcmp(subkey
, "mirror"))
389 remote
->mirror
= git_config_bool(key
, value
);
390 else if (!strcmp(subkey
, "skipdefaultupdate"))
391 remote
->skip_default_update
= git_config_bool(key
, value
);
392 else if (!strcmp(subkey
, "skipfetchall"))
393 remote
->skip_default_update
= git_config_bool(key
, value
);
394 else if (!strcmp(subkey
, "prune"))
395 remote
->prune
= git_config_bool(key
, value
);
396 else if (!strcmp(subkey
, "prunetags"))
397 remote
->prune_tags
= git_config_bool(key
, value
);
398 else if (!strcmp(subkey
, "url")) {
400 if (git_config_string(&v
, key
, value
))
403 } else if (!strcmp(subkey
, "pushurl")) {
405 if (git_config_string(&v
, key
, value
))
407 add_pushurl(remote
, v
);
408 } else if (!strcmp(subkey
, "push")) {
410 if (git_config_string(&v
, key
, value
))
412 add_push_refspec(remote
, v
);
413 } else if (!strcmp(subkey
, "fetch")) {
415 if (git_config_string(&v
, key
, value
))
417 add_fetch_refspec(remote
, v
);
418 } else if (!strcmp(subkey
, "receivepack")) {
420 if (git_config_string(&v
, key
, value
))
422 if (!remote
->receivepack
)
423 remote
->receivepack
= v
;
425 error("more than one receivepack given, using the first");
426 } else if (!strcmp(subkey
, "uploadpack")) {
428 if (git_config_string(&v
, key
, value
))
430 if (!remote
->uploadpack
)
431 remote
->uploadpack
= v
;
433 error("more than one uploadpack given, using the first");
434 } else if (!strcmp(subkey
, "tagopt")) {
435 if (!strcmp(value
, "--no-tags"))
436 remote
->fetch_tags
= -1;
437 else if (!strcmp(value
, "--tags"))
438 remote
->fetch_tags
= 2;
439 } else if (!strcmp(subkey
, "proxy")) {
440 return git_config_string((const char **)&remote
->http_proxy
,
442 } else if (!strcmp(subkey
, "proxyauthmethod")) {
443 return git_config_string((const char **)&remote
->http_proxy_authmethod
,
445 } else if (!strcmp(subkey
, "vcs")) {
446 return git_config_string(&remote
->foreign_vcs
, key
, value
);
451 static void alias_all_urls(void)
454 for (i
= 0; i
< remotes_nr
; i
++) {
455 int add_pushurl_aliases
;
458 for (j
= 0; j
< remotes
[i
]->pushurl_nr
; j
++) {
459 remotes
[i
]->pushurl
[j
] = alias_url(remotes
[i
]->pushurl
[j
], &rewrites
);
461 add_pushurl_aliases
= remotes
[i
]->pushurl_nr
== 0;
462 for (j
= 0; j
< remotes
[i
]->url_nr
; j
++) {
463 if (add_pushurl_aliases
)
464 add_pushurl_alias(remotes
[i
], remotes
[i
]->url
[j
]);
465 remotes
[i
]->url
[j
] = alias_url(remotes
[i
]->url
[j
], &rewrites
);
470 static void read_config(void)
479 current_branch
= NULL
;
480 if (startup_info
->have_repository
) {
481 const char *head_ref
= resolve_ref_unsafe("HEAD", 0, NULL
, &flag
);
482 if (head_ref
&& (flag
& REF_ISSYMREF
) &&
483 skip_prefix(head_ref
, "refs/heads/", &head_ref
)) {
484 current_branch
= make_branch(head_ref
, 0);
487 git_config(handle_config
, NULL
);
491 static int valid_remote_nick(const char *name
)
493 if (!name
[0] || is_dot_or_dotdot(name
))
496 /* remote nicknames cannot contain slashes */
498 if (is_dir_sep(*name
++))
503 const char *remote_for_branch(struct branch
*branch
, int *explicit)
505 if (branch
&& branch
->remote_name
) {
508 return branch
->remote_name
;
515 const char *pushremote_for_branch(struct branch
*branch
, int *explicit)
517 if (branch
&& branch
->pushremote_name
) {
520 return branch
->pushremote_name
;
522 if (pushremote_name
) {
525 return pushremote_name
;
527 return remote_for_branch(branch
, explicit);
530 const char *remote_ref_for_branch(struct branch
*branch
, int for_push
,
535 if (branch
->merge_nr
) {
538 return branch
->merge_name
[0];
541 const char *dst
, *remote_name
=
542 pushremote_for_branch(branch
, NULL
);
543 struct remote
*remote
= remote_get(remote_name
);
545 if (remote
&& remote
->push_refspec_nr
&&
546 (dst
= apply_refspecs(remote
->push
,
547 remote
->push_refspec_nr
,
560 static struct remote
*remote_get_1(const char *name
,
561 const char *(*get_default
)(struct branch
*, int *))
571 name
= get_default(current_branch
, &name_given
);
573 ret
= make_remote(name
, 0);
574 if (valid_remote_nick(name
) && have_git_dir()) {
575 if (!valid_remote(ret
))
576 read_remotes_file(ret
);
577 if (!valid_remote(ret
))
578 read_branches_file(ret
);
580 if (name_given
&& !valid_remote(ret
))
581 add_url_alias(ret
, name
);
582 if (!valid_remote(ret
))
584 ret
->fetch
= parse_fetch_refspec(ret
->fetch_refspec_nr
, ret
->fetch_refspec
);
585 ret
->push
= parse_push_refspec(ret
->push_refspec_nr
, ret
->push_refspec
);
589 struct remote
*remote_get(const char *name
)
591 return remote_get_1(name
, remote_for_branch
);
594 struct remote
*pushremote_get(const char *name
)
596 return remote_get_1(name
, pushremote_for_branch
);
599 int remote_is_configured(struct remote
*remote
, int in_repo
)
604 return remote
->configured_in_repo
;
605 return !!remote
->origin
;
608 int for_each_remote(each_remote_fn fn
, void *priv
)
612 for (i
= 0; i
< remotes_nr
&& !result
; i
++) {
613 struct remote
*r
= remotes
[i
];
617 r
->fetch
= parse_fetch_refspec(r
->fetch_refspec_nr
,
620 r
->push
= parse_push_refspec(r
->push_refspec_nr
,
622 result
= fn(r
, priv
);
627 static void handle_duplicate(struct ref
*ref1
, struct ref
*ref2
)
629 if (strcmp(ref1
->name
, ref2
->name
)) {
630 if (ref1
->fetch_head_status
!= FETCH_HEAD_IGNORE
&&
631 ref2
->fetch_head_status
!= FETCH_HEAD_IGNORE
) {
632 die(_("Cannot fetch both %s and %s to %s"),
633 ref1
->name
, ref2
->name
, ref2
->peer_ref
->name
);
634 } else if (ref1
->fetch_head_status
!= FETCH_HEAD_IGNORE
&&
635 ref2
->fetch_head_status
== FETCH_HEAD_IGNORE
) {
636 warning(_("%s usually tracks %s, not %s"),
637 ref2
->peer_ref
->name
, ref2
->name
, ref1
->name
);
638 } else if (ref1
->fetch_head_status
== FETCH_HEAD_IGNORE
&&
639 ref2
->fetch_head_status
== FETCH_HEAD_IGNORE
) {
640 die(_("%s tracks both %s and %s"),
641 ref2
->peer_ref
->name
, ref1
->name
, ref2
->name
);
644 * This last possibility doesn't occur because
645 * FETCH_HEAD_IGNORE entries always appear at
646 * the end of the list.
648 die(_("Internal error"));
651 free(ref2
->peer_ref
);
655 struct ref
*ref_remove_duplicates(struct ref
*ref_map
)
657 struct string_list refs
= STRING_LIST_INIT_NODUP
;
658 struct ref
*retval
= NULL
;
659 struct ref
**p
= &retval
;
662 struct ref
*ref
= ref_map
;
664 ref_map
= ref_map
->next
;
667 if (!ref
->peer_ref
) {
671 struct string_list_item
*item
=
672 string_list_insert(&refs
, ref
->peer_ref
->name
);
675 /* Entry already existed */
676 handle_duplicate((struct ref
*)item
->util
, ref
);
685 string_list_clear(&refs
, 0);
689 int remote_has_url(struct remote
*remote
, const char *url
)
692 for (i
= 0; i
< remote
->url_nr
; i
++) {
693 if (!strcmp(remote
->url
[i
], url
))
699 static int match_name_with_pattern(const char *key
, const char *name
,
700 const char *value
, char **result
)
702 const char *kstar
= strchr(key
, '*');
708 die("Key '%s' of pattern had no '*'", key
);
710 ksuffixlen
= strlen(kstar
+ 1);
711 namelen
= strlen(name
);
712 ret
= !strncmp(name
, key
, klen
) && namelen
>= klen
+ ksuffixlen
&&
713 !memcmp(name
+ namelen
- ksuffixlen
, kstar
+ 1, ksuffixlen
);
715 struct strbuf sb
= STRBUF_INIT
;
716 const char *vstar
= strchr(value
, '*');
718 die("Value '%s' of pattern has no '*'", value
);
719 strbuf_add(&sb
, value
, vstar
- value
);
720 strbuf_add(&sb
, name
+ klen
, namelen
- klen
- ksuffixlen
);
721 strbuf_addstr(&sb
, vstar
+ 1);
722 *result
= strbuf_detach(&sb
, NULL
);
727 static void query_refspecs_multiple(struct refspec_item
*refs
, int ref_count
, struct refspec_item
*query
, struct string_list
*results
)
730 int find_src
= !query
->src
;
732 if (find_src
&& !query
->dst
)
733 error("query_refspecs_multiple: need either src or dst");
735 for (i
= 0; i
< ref_count
; i
++) {
736 struct refspec_item
*refspec
= &refs
[i
];
737 const char *key
= find_src
? refspec
->dst
: refspec
->src
;
738 const char *value
= find_src
? refspec
->src
: refspec
->dst
;
739 const char *needle
= find_src
? query
->dst
: query
->src
;
740 char **result
= find_src
? &query
->src
: &query
->dst
;
744 if (refspec
->pattern
) {
745 if (match_name_with_pattern(key
, needle
, value
, result
))
746 string_list_append_nodup(results
, *result
);
747 } else if (!strcmp(needle
, key
)) {
748 string_list_append(results
, value
);
753 int query_refspecs(struct refspec_item
*refs
, int ref_count
, struct refspec_item
*query
)
756 int find_src
= !query
->src
;
757 const char *needle
= find_src
? query
->dst
: query
->src
;
758 char **result
= find_src
? &query
->src
: &query
->dst
;
760 if (find_src
&& !query
->dst
)
761 return error("query_refspecs: need either src or dst");
763 for (i
= 0; i
< ref_count
; i
++) {
764 struct refspec_item
*refspec
= &refs
[i
];
765 const char *key
= find_src
? refspec
->dst
: refspec
->src
;
766 const char *value
= find_src
? refspec
->src
: refspec
->dst
;
770 if (refspec
->pattern
) {
771 if (match_name_with_pattern(key
, needle
, value
, result
)) {
772 query
->force
= refspec
->force
;
775 } else if (!strcmp(needle
, key
)) {
776 *result
= xstrdup(value
);
777 query
->force
= refspec
->force
;
784 char *apply_refspecs(struct refspec_item
*refspecs
, int nr_refspec
,
787 struct refspec_item query
;
789 memset(&query
, 0, sizeof(struct refspec_item
));
790 query
.src
= (char *)name
;
792 if (query_refspecs(refspecs
, nr_refspec
, &query
))
798 int remote_find_tracking(struct remote
*remote
, struct refspec_item
*refspec
)
800 return query_refspecs(remote
->fetch
, remote
->fetch_refspec_nr
, refspec
);
803 static struct ref
*alloc_ref_with_prefix(const char *prefix
, size_t prefixlen
,
806 size_t len
= strlen(name
);
807 struct ref
*ref
= xcalloc(1, st_add4(sizeof(*ref
), prefixlen
, len
, 1));
808 memcpy(ref
->name
, prefix
, prefixlen
);
809 memcpy(ref
->name
+ prefixlen
, name
, len
);
813 struct ref
*alloc_ref(const char *name
)
815 return alloc_ref_with_prefix("", 0, name
);
818 struct ref
*copy_ref(const struct ref
*ref
)
824 len
= st_add3(sizeof(struct ref
), strlen(ref
->name
), 1);
826 memcpy(cpy
, ref
, len
);
828 cpy
->symref
= xstrdup_or_null(ref
->symref
);
829 cpy
->remote_status
= xstrdup_or_null(ref
->remote_status
);
830 cpy
->peer_ref
= copy_ref(ref
->peer_ref
);
834 struct ref
*copy_ref_list(const struct ref
*ref
)
836 struct ref
*ret
= NULL
;
837 struct ref
**tail
= &ret
;
839 *tail
= copy_ref(ref
);
841 tail
= &((*tail
)->next
);
846 static void free_ref(struct ref
*ref
)
850 free_ref(ref
->peer_ref
);
851 free(ref
->remote_status
);
856 void free_refs(struct ref
*ref
)
866 int ref_compare_name(const void *va
, const void *vb
)
868 const struct ref
*a
= va
, *b
= vb
;
869 return strcmp(a
->name
, b
->name
);
872 static void *ref_list_get_next(const void *a
)
874 return ((const struct ref
*)a
)->next
;
877 static void ref_list_set_next(void *a
, void *next
)
879 ((struct ref
*)a
)->next
= next
;
882 void sort_ref_list(struct ref
**l
, int (*cmp
)(const void *, const void *))
884 *l
= llist_mergesort(*l
, ref_list_get_next
, ref_list_set_next
, cmp
);
887 int count_refspec_match(const char *pattern
,
889 struct ref
**matched_ref
)
891 int patlen
= strlen(pattern
);
892 struct ref
*matched_weak
= NULL
;
893 struct ref
*matched
= NULL
;
897 for (weak_match
= match
= 0; refs
; refs
= refs
->next
) {
898 char *name
= refs
->name
;
899 int namelen
= strlen(name
);
901 if (!refname_match(pattern
, name
))
904 /* A match is "weak" if it is with refs outside
905 * heads or tags, and did not specify the pattern
906 * in full (e.g. "refs/remotes/origin/master") or at
907 * least from the toplevel (e.g. "remotes/origin/master");
908 * otherwise "git push $URL master" would result in
909 * ambiguity between remotes/origin/master and heads/master
910 * at the remote site.
912 if (namelen
!= patlen
&&
913 patlen
!= namelen
- 5 &&
914 !starts_with(name
, "refs/heads/") &&
915 !starts_with(name
, "refs/tags/")) {
916 /* We want to catch the case where only weak
917 * matches are found and there are multiple
918 * matches, and where more than one strong
919 * matches are found, as ambiguous. One
920 * strong match with zero or more weak matches
921 * are acceptable as a unique match.
933 *matched_ref
= matched_weak
;
938 *matched_ref
= matched
;
943 static void tail_link_ref(struct ref
*ref
, struct ref
***tail
)
951 static struct ref
*alloc_delete_ref(void)
953 struct ref
*ref
= alloc_ref("(delete)");
954 oidclr(&ref
->new_oid
);
958 static int try_explicit_object_name(const char *name
,
961 struct object_id oid
;
965 *match
= alloc_delete_ref();
969 if (get_oid(name
, &oid
))
973 *match
= alloc_ref(name
);
974 oidcpy(&(*match
)->new_oid
, &oid
);
979 static struct ref
*make_linked_ref(const char *name
, struct ref
***tail
)
981 struct ref
*ret
= alloc_ref(name
);
982 tail_link_ref(ret
, tail
);
986 static char *guess_ref(const char *name
, struct ref
*peer
)
988 struct strbuf buf
= STRBUF_INIT
;
990 const char *r
= resolve_ref_unsafe(peer
->name
, RESOLVE_REF_READING
,
995 if (starts_with(r
, "refs/heads/"))
996 strbuf_addstr(&buf
, "refs/heads/");
997 else if (starts_with(r
, "refs/tags/"))
998 strbuf_addstr(&buf
, "refs/tags/");
1002 strbuf_addstr(&buf
, name
);
1003 return strbuf_detach(&buf
, NULL
);
1006 static int match_explicit_lhs(struct ref
*src
,
1007 struct refspec_item
*rs
,
1009 int *allocated_match
)
1011 switch (count_refspec_match(rs
->src
, src
, match
)) {
1013 if (allocated_match
)
1014 *allocated_match
= 0;
1017 /* The source could be in the get_sha1() format
1018 * not a reference name. :refs/other is a
1019 * way to delete 'other' ref at the remote end.
1021 if (try_explicit_object_name(rs
->src
, match
) < 0)
1022 return error("src refspec %s does not match any.", rs
->src
);
1023 if (allocated_match
)
1024 *allocated_match
= 1;
1027 return error("src refspec %s matches more than one.", rs
->src
);
1031 static int match_explicit(struct ref
*src
, struct ref
*dst
,
1032 struct ref
***dst_tail
,
1033 struct refspec_item
*rs
)
1035 struct ref
*matched_src
, *matched_dst
;
1038 const char *dst_value
= rs
->dst
;
1041 if (rs
->pattern
|| rs
->matching
)
1044 matched_src
= matched_dst
= NULL
;
1045 if (match_explicit_lhs(src
, rs
, &matched_src
, &allocated_src
) < 0)
1051 dst_value
= resolve_ref_unsafe(matched_src
->name
,
1052 RESOLVE_REF_READING
,
1055 ((flag
& REF_ISSYMREF
) &&
1056 !starts_with(dst_value
, "refs/heads/")))
1057 die("%s cannot be resolved to branch.",
1061 switch (count_refspec_match(dst_value
, dst
, &matched_dst
)) {
1065 if (starts_with(dst_value
, "refs/"))
1066 matched_dst
= make_linked_ref(dst_value
, dst_tail
);
1067 else if (is_null_oid(&matched_src
->new_oid
))
1068 error("unable to delete '%s': remote ref does not exist",
1070 else if ((dst_guess
= guess_ref(dst_value
, matched_src
))) {
1071 matched_dst
= make_linked_ref(dst_guess
, dst_tail
);
1074 error("unable to push to unqualified destination: %s\n"
1075 "The destination refspec neither matches an "
1076 "existing ref on the remote nor\n"
1077 "begins with refs/, and we are unable to "
1078 "guess a prefix based on the source ref.",
1083 error("dst refspec %s matches more than one.",
1089 if (matched_dst
->peer_ref
)
1090 return error("dst ref %s receives from more than one src.",
1093 matched_dst
->peer_ref
= allocated_src
?
1095 copy_ref(matched_src
);
1096 matched_dst
->force
= rs
->force
;
1101 static int match_explicit_refs(struct ref
*src
, struct ref
*dst
,
1102 struct ref
***dst_tail
, struct refspec_item
*rs
,
1106 for (i
= errs
= 0; i
< rs_nr
; i
++)
1107 errs
+= match_explicit(src
, dst
, dst_tail
, &rs
[i
]);
1111 static char *get_ref_match(const struct refspec_item
*rs
, int rs_nr
, const struct ref
*ref
,
1112 int send_mirror
, int direction
, const struct refspec_item
**ret_pat
)
1114 const struct refspec_item
*pat
;
1117 int matching_refs
= -1;
1118 for (i
= 0; i
< rs_nr
; i
++) {
1119 if (rs
[i
].matching
&&
1120 (matching_refs
== -1 || rs
[i
].force
)) {
1125 if (rs
[i
].pattern
) {
1126 const char *dst_side
= rs
[i
].dst
? rs
[i
].dst
: rs
[i
].src
;
1128 if (direction
== FROM_SRC
)
1129 match
= match_name_with_pattern(rs
[i
].src
, ref
->name
, dst_side
, &name
);
1131 match
= match_name_with_pattern(dst_side
, ref
->name
, rs
[i
].src
, &name
);
1138 if (matching_refs
== -1)
1141 pat
= rs
+ matching_refs
;
1142 if (pat
->matching
) {
1144 * "matching refs"; traditionally we pushed everything
1145 * including refs outside refs/heads/ hierarchy, but
1146 * that does not make much sense these days.
1148 if (!send_mirror
&& !starts_with(ref
->name
, "refs/heads/"))
1150 name
= xstrdup(ref
->name
);
1157 static struct ref
**tail_ref(struct ref
**head
)
1159 struct ref
**tail
= head
;
1161 tail
= &((*tail
)->next
);
1166 struct commit
**tip
;
1170 static void add_to_tips(struct tips
*tips
, const struct object_id
*oid
)
1172 struct commit
*commit
;
1174 if (is_null_oid(oid
))
1176 commit
= lookup_commit_reference_gently(oid
, 1);
1177 if (!commit
|| (commit
->object
.flags
& TMP_MARK
))
1179 commit
->object
.flags
|= TMP_MARK
;
1180 ALLOC_GROW(tips
->tip
, tips
->nr
+ 1, tips
->alloc
);
1181 tips
->tip
[tips
->nr
++] = commit
;
1184 static void add_missing_tags(struct ref
*src
, struct ref
**dst
, struct ref
***dst_tail
)
1186 struct string_list dst_tag
= STRING_LIST_INIT_NODUP
;
1187 struct string_list src_tag
= STRING_LIST_INIT_NODUP
;
1188 struct string_list_item
*item
;
1190 struct tips sent_tips
;
1193 * Collect everything we know they would have at the end of
1194 * this push, and collect all tags they have.
1196 memset(&sent_tips
, 0, sizeof(sent_tips
));
1197 for (ref
= *dst
; ref
; ref
= ref
->next
) {
1198 if (ref
->peer_ref
&&
1199 !is_null_oid(&ref
->peer_ref
->new_oid
))
1200 add_to_tips(&sent_tips
, &ref
->peer_ref
->new_oid
);
1202 add_to_tips(&sent_tips
, &ref
->old_oid
);
1203 if (starts_with(ref
->name
, "refs/tags/"))
1204 string_list_append(&dst_tag
, ref
->name
);
1206 clear_commit_marks_many(sent_tips
.nr
, sent_tips
.tip
, TMP_MARK
);
1208 string_list_sort(&dst_tag
);
1210 /* Collect tags they do not have. */
1211 for (ref
= src
; ref
; ref
= ref
->next
) {
1212 if (!starts_with(ref
->name
, "refs/tags/"))
1213 continue; /* not a tag */
1214 if (string_list_has_string(&dst_tag
, ref
->name
))
1215 continue; /* they already have it */
1216 if (oid_object_info(&ref
->new_oid
, NULL
) != OBJ_TAG
)
1217 continue; /* be conservative */
1218 item
= string_list_append(&src_tag
, ref
->name
);
1221 string_list_clear(&dst_tag
, 0);
1224 * At this point, src_tag lists tags that are missing from
1225 * dst, and sent_tips lists the tips we are pushing or those
1226 * that we know they already have. An element in the src_tag
1227 * that is an ancestor of any of the sent_tips needs to be
1228 * sent to the other side.
1231 for_each_string_list_item(item
, &src_tag
) {
1232 struct ref
*ref
= item
->util
;
1233 struct ref
*dst_ref
;
1234 struct commit
*commit
;
1236 if (is_null_oid(&ref
->new_oid
))
1238 commit
= lookup_commit_reference_gently(&ref
->new_oid
,
1241 /* not pushing a commit, which is not an error */
1245 * Is this tag, which they do not have, reachable from
1246 * any of the commits we are sending?
1248 if (!in_merge_bases_many(commit
, sent_tips
.nr
, sent_tips
.tip
))
1252 dst_ref
= make_linked_ref(ref
->name
, dst_tail
);
1253 oidcpy(&dst_ref
->new_oid
, &ref
->new_oid
);
1254 dst_ref
->peer_ref
= copy_ref(ref
);
1257 string_list_clear(&src_tag
, 0);
1258 free(sent_tips
.tip
);
1261 struct ref
*find_ref_by_name(const struct ref
*list
, const char *name
)
1263 for ( ; list
; list
= list
->next
)
1264 if (!strcmp(list
->name
, name
))
1265 return (struct ref
*)list
;
1269 static void prepare_ref_index(struct string_list
*ref_index
, struct ref
*ref
)
1271 for ( ; ref
; ref
= ref
->next
)
1272 string_list_append_nodup(ref_index
, ref
->name
)->util
= ref
;
1274 string_list_sort(ref_index
);
1278 * Given only the set of local refs, sanity-check the set of push
1279 * refspecs. We can't catch all errors that match_push_refs would,
1280 * but we can catch some errors early before even talking to the
1283 int check_push_refs(struct ref
*src
, int nr_refspec
, const char **refspec_names
)
1285 struct refspec refspec
= REFSPEC_INIT_PUSH
;
1289 refspec_appendn(&refspec
, refspec_names
, nr_refspec
);
1291 for (i
= 0; i
< refspec
.nr
; i
++) {
1292 struct refspec_item
*rs
= &refspec
.items
[i
];
1294 if (rs
->pattern
|| rs
->matching
)
1297 ret
|= match_explicit_lhs(src
, rs
, NULL
, NULL
);
1300 refspec_clear(&refspec
);
1305 * Given the set of refs the local repository has, the set of refs the
1306 * remote repository has, and the refspec used for push, determine
1307 * what remote refs we will update and with what value by setting
1308 * peer_ref (which object is being pushed) and force (if the push is
1309 * forced) in elements of "dst". The function may add new elements to
1310 * dst (e.g. pushing to a new branch, done in match_explicit_refs).
1312 int match_push_refs(struct ref
*src
, struct ref
**dst
,
1313 int nr_refspec
, const char **refspec
, int flags
)
1315 struct refspec rs
= REFSPEC_INIT_PUSH
;
1316 int send_all
= flags
& MATCH_REFS_ALL
;
1317 int send_mirror
= flags
& MATCH_REFS_MIRROR
;
1318 int send_prune
= flags
& MATCH_REFS_PRUNE
;
1320 static const char *default_refspec
[] = { ":", NULL
};
1321 struct ref
*ref
, **dst_tail
= tail_ref(dst
);
1322 struct string_list dst_ref_index
= STRING_LIST_INIT_NODUP
;
1326 refspec
= default_refspec
;
1328 refspec_appendn(&rs
, refspec
, nr_refspec
);
1329 errs
= match_explicit_refs(src
, *dst
, &dst_tail
, rs
.items
, rs
.nr
);
1331 /* pick the remainder */
1332 for (ref
= src
; ref
; ref
= ref
->next
) {
1333 struct string_list_item
*dst_item
;
1334 struct ref
*dst_peer
;
1335 const struct refspec_item
*pat
= NULL
;
1338 dst_name
= get_ref_match(rs
.items
, rs
.nr
, ref
, send_mirror
, FROM_SRC
, &pat
);
1342 if (!dst_ref_index
.nr
)
1343 prepare_ref_index(&dst_ref_index
, *dst
);
1345 dst_item
= string_list_lookup(&dst_ref_index
, dst_name
);
1346 dst_peer
= dst_item
? dst_item
->util
: NULL
;
1348 if (dst_peer
->peer_ref
)
1349 /* We're already sending something to this ref. */
1352 if (pat
->matching
&& !(send_all
|| send_mirror
))
1354 * Remote doesn't have it, and we have no
1355 * explicit pattern, and we don't have
1356 * --all or --mirror.
1360 /* Create a new one and link it */
1361 dst_peer
= make_linked_ref(dst_name
, &dst_tail
);
1362 oidcpy(&dst_peer
->new_oid
, &ref
->new_oid
);
1363 string_list_insert(&dst_ref_index
,
1364 dst_peer
->name
)->util
= dst_peer
;
1366 dst_peer
->peer_ref
= copy_ref(ref
);
1367 dst_peer
->force
= pat
->force
;
1372 string_list_clear(&dst_ref_index
, 0);
1374 if (flags
& MATCH_REFS_FOLLOW_TAGS
)
1375 add_missing_tags(src
, dst
, &dst_tail
);
1378 struct string_list src_ref_index
= STRING_LIST_INIT_NODUP
;
1379 /* check for missing refs on the remote */
1380 for (ref
= *dst
; ref
; ref
= ref
->next
) {
1384 /* We're already sending something to this ref. */
1387 src_name
= get_ref_match(rs
.items
, rs
.nr
, ref
, send_mirror
, FROM_DST
, NULL
);
1389 if (!src_ref_index
.nr
)
1390 prepare_ref_index(&src_ref_index
, src
);
1391 if (!string_list_has_string(&src_ref_index
,
1393 ref
->peer_ref
= alloc_delete_ref();
1397 string_list_clear(&src_ref_index
, 0);
1407 void set_ref_status_for_push(struct ref
*remote_refs
, int send_mirror
,
1412 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
1413 int force_ref_update
= ref
->force
|| force_update
;
1414 int reject_reason
= 0;
1417 oidcpy(&ref
->new_oid
, &ref
->peer_ref
->new_oid
);
1418 else if (!send_mirror
)
1421 ref
->deletion
= is_null_oid(&ref
->new_oid
);
1422 if (!ref
->deletion
&&
1423 !oidcmp(&ref
->old_oid
, &ref
->new_oid
)) {
1424 ref
->status
= REF_STATUS_UPTODATE
;
1429 * If the remote ref has moved and is now different
1430 * from what we expect, reject any push.
1432 * It also is an error if the user told us to check
1433 * with the remote-tracking branch to find the value
1434 * to expect, but we did not have such a tracking
1437 if (ref
->expect_old_sha1
) {
1438 if (oidcmp(&ref
->old_oid
, &ref
->old_oid_expect
))
1439 reject_reason
= REF_STATUS_REJECT_STALE
;
1441 /* If the ref isn't stale then force the update. */
1442 force_ref_update
= 1;
1446 * If the update isn't already rejected then check
1447 * the usual "must fast-forward" rules.
1449 * Decide whether an individual refspec A:B can be
1450 * pushed. The push will succeed if any of the
1451 * following are true:
1453 * (1) the remote reference B does not exist
1455 * (2) the remote reference B is being removed (i.e.,
1456 * pushing :B where no source is specified)
1458 * (3) the destination is not under refs/tags/, and
1459 * if the old and new value is a commit, the new
1460 * is a descendant of the old.
1462 * (4) it is forced using the +A:B notation, or by
1463 * passing the --force argument
1466 if (!reject_reason
&& !ref
->deletion
&& !is_null_oid(&ref
->old_oid
)) {
1467 if (starts_with(ref
->name
, "refs/tags/"))
1468 reject_reason
= REF_STATUS_REJECT_ALREADY_EXISTS
;
1469 else if (!has_object_file(&ref
->old_oid
))
1470 reject_reason
= REF_STATUS_REJECT_FETCH_FIRST
;
1471 else if (!lookup_commit_reference_gently(&ref
->old_oid
, 1) ||
1472 !lookup_commit_reference_gently(&ref
->new_oid
, 1))
1473 reject_reason
= REF_STATUS_REJECT_NEEDS_FORCE
;
1474 else if (!ref_newer(&ref
->new_oid
, &ref
->old_oid
))
1475 reject_reason
= REF_STATUS_REJECT_NONFASTFORWARD
;
1479 * "--force" will defeat any rejection implemented
1480 * by the rules above.
1482 if (!force_ref_update
)
1483 ref
->status
= reject_reason
;
1484 else if (reject_reason
)
1485 ref
->forced_update
= 1;
1489 static void set_merge(struct branch
*ret
)
1491 struct remote
*remote
;
1493 struct object_id oid
;
1497 return; /* no branch */
1499 return; /* already run */
1500 if (!ret
->remote_name
|| !ret
->merge_nr
) {
1502 * no merge config; let's make sure we don't confuse callers
1503 * with a non-zero merge_nr but a NULL merge
1509 remote
= remote_get(ret
->remote_name
);
1511 ret
->merge
= xcalloc(ret
->merge_nr
, sizeof(*ret
->merge
));
1512 for (i
= 0; i
< ret
->merge_nr
; i
++) {
1513 ret
->merge
[i
] = xcalloc(1, sizeof(**ret
->merge
));
1514 ret
->merge
[i
]->src
= xstrdup(ret
->merge_name
[i
]);
1515 if (!remote_find_tracking(remote
, ret
->merge
[i
]) ||
1516 strcmp(ret
->remote_name
, "."))
1518 if (dwim_ref(ret
->merge_name
[i
], strlen(ret
->merge_name
[i
]),
1520 ret
->merge
[i
]->dst
= ref
;
1522 ret
->merge
[i
]->dst
= xstrdup(ret
->merge_name
[i
]);
1526 struct branch
*branch_get(const char *name
)
1531 if (!name
|| !*name
|| !strcmp(name
, "HEAD"))
1532 ret
= current_branch
;
1534 ret
= make_branch(name
, 0);
1539 int branch_has_merge_config(struct branch
*branch
)
1541 return branch
&& !!branch
->merge
;
1544 int branch_merge_matches(struct branch
*branch
,
1546 const char *refname
)
1548 if (!branch
|| i
< 0 || i
>= branch
->merge_nr
)
1550 return refname_match(branch
->merge
[i
]->src
, refname
);
1553 __attribute__((format (printf
,2,3)))
1554 static const char *error_buf(struct strbuf
*err
, const char *fmt
, ...)
1559 strbuf_vaddf(err
, fmt
, ap
);
1565 const char *branch_get_upstream(struct branch
*branch
, struct strbuf
*err
)
1568 return error_buf(err
, _("HEAD does not point to a branch"));
1570 if (!branch
->merge
|| !branch
->merge
[0]) {
1572 * no merge config; is it because the user didn't define any,
1573 * or because it is not a real branch, and get_branch
1576 if (!ref_exists(branch
->refname
))
1577 return error_buf(err
, _("no such branch: '%s'"),
1579 return error_buf(err
,
1580 _("no upstream configured for branch '%s'"),
1584 if (!branch
->merge
[0]->dst
)
1585 return error_buf(err
,
1586 _("upstream branch '%s' not stored as a remote-tracking branch"),
1587 branch
->merge
[0]->src
);
1589 return branch
->merge
[0]->dst
;
1592 static const char *tracking_for_push_dest(struct remote
*remote
,
1593 const char *refname
,
1598 ret
= apply_refspecs(remote
->fetch
, remote
->fetch_refspec_nr
, refname
);
1600 return error_buf(err
,
1601 _("push destination '%s' on remote '%s' has no local tracking branch"),
1602 refname
, remote
->name
);
1606 static const char *branch_get_push_1(struct branch
*branch
, struct strbuf
*err
)
1608 struct remote
*remote
;
1610 remote
= remote_get(pushremote_for_branch(branch
, NULL
));
1612 return error_buf(err
,
1613 _("branch '%s' has no remote for pushing"),
1616 if (remote
->push_refspec_nr
) {
1620 dst
= apply_refspecs(remote
->push
, remote
->push_refspec_nr
,
1623 return error_buf(err
,
1624 _("push refspecs for '%s' do not include '%s'"),
1625 remote
->name
, branch
->name
);
1627 ret
= tracking_for_push_dest(remote
, dst
, err
);
1633 return tracking_for_push_dest(remote
, branch
->refname
, err
);
1635 switch (push_default
) {
1636 case PUSH_DEFAULT_NOTHING
:
1637 return error_buf(err
, _("push has no destination (push.default is 'nothing')"));
1639 case PUSH_DEFAULT_MATCHING
:
1640 case PUSH_DEFAULT_CURRENT
:
1641 return tracking_for_push_dest(remote
, branch
->refname
, err
);
1643 case PUSH_DEFAULT_UPSTREAM
:
1644 return branch_get_upstream(branch
, err
);
1646 case PUSH_DEFAULT_UNSPECIFIED
:
1647 case PUSH_DEFAULT_SIMPLE
:
1649 const char *up
, *cur
;
1651 up
= branch_get_upstream(branch
, err
);
1654 cur
= tracking_for_push_dest(remote
, branch
->refname
, err
);
1657 if (strcmp(cur
, up
))
1658 return error_buf(err
,
1659 _("cannot resolve 'simple' push to a single destination"));
1664 die("BUG: unhandled push situation");
1667 const char *branch_get_push(struct branch
*branch
, struct strbuf
*err
)
1670 return error_buf(err
, _("HEAD does not point to a branch"));
1672 if (!branch
->push_tracking_ref
)
1673 branch
->push_tracking_ref
= branch_get_push_1(branch
, err
);
1674 return branch
->push_tracking_ref
;
1677 static int ignore_symref_update(const char *refname
)
1681 if (!resolve_ref_unsafe(refname
, 0, NULL
, &flag
))
1682 return 0; /* non-existing refs are OK */
1683 return (flag
& REF_ISSYMREF
);
1687 * Create and return a list of (struct ref) consisting of copies of
1688 * each remote_ref that matches refspec. refspec must be a pattern.
1689 * Fill in the copies' peer_ref to describe the local tracking refs to
1690 * which they map. Omit any references that would map to an existing
1691 * local symbolic ref.
1693 static struct ref
*get_expanded_map(const struct ref
*remote_refs
,
1694 const struct refspec_item
*refspec
)
1696 const struct ref
*ref
;
1697 struct ref
*ret
= NULL
;
1698 struct ref
**tail
= &ret
;
1700 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
1701 char *expn_name
= NULL
;
1703 if (strchr(ref
->name
, '^'))
1704 continue; /* a dereference item */
1705 if (match_name_with_pattern(refspec
->src
, ref
->name
,
1706 refspec
->dst
, &expn_name
) &&
1707 !ignore_symref_update(expn_name
)) {
1708 struct ref
*cpy
= copy_ref(ref
);
1710 cpy
->peer_ref
= alloc_ref(expn_name
);
1712 cpy
->peer_ref
->force
= 1;
1722 static const struct ref
*find_ref_by_name_abbrev(const struct ref
*refs
, const char *name
)
1724 const struct ref
*ref
;
1725 for (ref
= refs
; ref
; ref
= ref
->next
) {
1726 if (refname_match(name
, ref
->name
))
1732 struct ref
*get_remote_ref(const struct ref
*remote_refs
, const char *name
)
1734 const struct ref
*ref
= find_ref_by_name_abbrev(remote_refs
, name
);
1739 return copy_ref(ref
);
1742 static struct ref
*get_local_ref(const char *name
)
1744 if (!name
|| name
[0] == '\0')
1747 if (starts_with(name
, "refs/"))
1748 return alloc_ref(name
);
1750 if (starts_with(name
, "heads/") ||
1751 starts_with(name
, "tags/") ||
1752 starts_with(name
, "remotes/"))
1753 return alloc_ref_with_prefix("refs/", 5, name
);
1755 return alloc_ref_with_prefix("refs/heads/", 11, name
);
1758 int get_fetch_map(const struct ref
*remote_refs
,
1759 const struct refspec_item
*refspec
,
1763 struct ref
*ref_map
, **rmp
;
1765 if (refspec
->pattern
) {
1766 ref_map
= get_expanded_map(remote_refs
, refspec
);
1768 const char *name
= refspec
->src
[0] ? refspec
->src
: "HEAD";
1770 if (refspec
->exact_sha1
) {
1771 ref_map
= alloc_ref(name
);
1772 get_oid_hex(name
, &ref_map
->old_oid
);
1774 ref_map
= get_remote_ref(remote_refs
, name
);
1776 if (!missing_ok
&& !ref_map
)
1777 die("Couldn't find remote ref %s", name
);
1779 ref_map
->peer_ref
= get_local_ref(refspec
->dst
);
1780 if (ref_map
->peer_ref
&& refspec
->force
)
1781 ref_map
->peer_ref
->force
= 1;
1785 for (rmp
= &ref_map
; *rmp
; ) {
1786 if ((*rmp
)->peer_ref
) {
1787 if (!starts_with((*rmp
)->peer_ref
->name
, "refs/") ||
1788 check_refname_format((*rmp
)->peer_ref
->name
, 0)) {
1789 struct ref
*ignore
= *rmp
;
1790 error("* Ignoring funny ref '%s' locally",
1791 (*rmp
)->peer_ref
->name
);
1792 *rmp
= (*rmp
)->next
;
1793 free(ignore
->peer_ref
);
1798 rmp
= &((*rmp
)->next
);
1802 tail_link_ref(ref_map
, tail
);
1807 int resolve_remote_symref(struct ref
*ref
, struct ref
*list
)
1811 for (; list
; list
= list
->next
)
1812 if (!strcmp(ref
->symref
, list
->name
)) {
1813 oidcpy(&ref
->old_oid
, &list
->old_oid
);
1819 static void unmark_and_free(struct commit_list
*list
, unsigned int mark
)
1822 struct commit
*commit
= pop_commit(&list
);
1823 commit
->object
.flags
&= ~mark
;
1827 int ref_newer(const struct object_id
*new_oid
, const struct object_id
*old_oid
)
1830 struct commit
*old_commit
, *new_commit
;
1831 struct commit_list
*list
, *used
;
1835 * Both new_commit and old_commit must be commit-ish and new_commit is descendant of
1836 * old_commit. Otherwise we require --force.
1838 o
= deref_tag(parse_object(old_oid
), NULL
, 0);
1839 if (!o
|| o
->type
!= OBJ_COMMIT
)
1841 old_commit
= (struct commit
*) o
;
1843 o
= deref_tag(parse_object(new_oid
), NULL
, 0);
1844 if (!o
|| o
->type
!= OBJ_COMMIT
)
1846 new_commit
= (struct commit
*) o
;
1848 if (parse_commit(new_commit
) < 0)
1852 commit_list_insert(new_commit
, &list
);
1854 new_commit
= pop_most_recent_commit(&list
, TMP_MARK
);
1855 commit_list_insert(new_commit
, &used
);
1856 if (new_commit
== old_commit
) {
1861 unmark_and_free(list
, TMP_MARK
);
1862 unmark_and_free(used
, TMP_MARK
);
1867 * Lookup the upstream branch for the given branch and if present, optionally
1868 * compute the commit ahead/behind values for the pair.
1870 * If abf is AHEAD_BEHIND_FULL, compute the full ahead/behind and return the
1871 * counts in *num_ours and *num_theirs. If abf is AHEAD_BEHIND_QUICK, skip
1872 * the (potentially expensive) a/b computation (*num_ours and *num_theirs are
1875 * The name of the upstream branch (or NULL if no upstream is defined) is
1876 * returned via *upstream_name, if it is not itself NULL.
1878 * Returns -1 if num_ours and num_theirs could not be filled in (e.g., no
1879 * upstream defined, or ref does not exist). Returns 0 if the commits are
1880 * identical. Returns 1 if commits are different.
1882 int stat_tracking_info(struct branch
*branch
, int *num_ours
, int *num_theirs
,
1883 const char **upstream_name
, enum ahead_behind_flags abf
)
1885 struct object_id oid
;
1886 struct commit
*ours
, *theirs
;
1887 struct rev_info revs
;
1889 struct argv_array argv
= ARGV_ARRAY_INIT
;
1891 /* Cannot stat unless we are marked to build on top of somebody else. */
1892 base
= branch_get_upstream(branch
, NULL
);
1894 *upstream_name
= base
;
1898 /* Cannot stat if what we used to build on no longer exists */
1899 if (read_ref(base
, &oid
))
1901 theirs
= lookup_commit_reference(&oid
);
1905 if (read_ref(branch
->refname
, &oid
))
1907 ours
= lookup_commit_reference(&oid
);
1911 *num_theirs
= *num_ours
= 0;
1913 /* are we the same? */
1916 if (abf
== AHEAD_BEHIND_QUICK
)
1918 if (abf
!= AHEAD_BEHIND_FULL
)
1919 BUG("stat_tracking_info: invalid abf '%d'", abf
);
1921 /* Run "rev-list --left-right ours...theirs" internally... */
1922 argv_array_push(&argv
, ""); /* ignored */
1923 argv_array_push(&argv
, "--left-right");
1924 argv_array_pushf(&argv
, "%s...%s",
1925 oid_to_hex(&ours
->object
.oid
),
1926 oid_to_hex(&theirs
->object
.oid
));
1927 argv_array_push(&argv
, "--");
1929 init_revisions(&revs
, NULL
);
1930 setup_revisions(argv
.argc
, argv
.argv
, &revs
, NULL
);
1931 if (prepare_revision_walk(&revs
))
1932 die("revision walk setup failed");
1934 /* ... and count the commits on each side. */
1936 struct commit
*c
= get_revision(&revs
);
1939 if (c
->object
.flags
& SYMMETRIC_LEFT
)
1945 /* clear object flags smudged by the above traversal */
1946 clear_commit_marks(ours
, ALL_REV_FLAGS
);
1947 clear_commit_marks(theirs
, ALL_REV_FLAGS
);
1949 argv_array_clear(&argv
);
1954 * Return true when there is anything to report, otherwise false.
1956 int format_tracking_info(struct branch
*branch
, struct strbuf
*sb
,
1957 enum ahead_behind_flags abf
)
1959 int ours
, theirs
, sti
;
1960 const char *full_base
;
1962 int upstream_is_gone
= 0;
1964 sti
= stat_tracking_info(branch
, &ours
, &theirs
, &full_base
, abf
);
1968 upstream_is_gone
= 1;
1971 base
= shorten_unambiguous_ref(full_base
, 0);
1972 if (upstream_is_gone
) {
1974 _("Your branch is based on '%s', but the upstream is gone.\n"),
1976 if (advice_status_hints
)
1978 _(" (use \"git branch --unset-upstream\" to fixup)\n"));
1981 _("Your branch is up to date with '%s'.\n"),
1983 } else if (abf
== AHEAD_BEHIND_QUICK
) {
1985 _("Your branch and '%s' refer to different commits.\n"),
1987 if (advice_status_hints
)
1988 strbuf_addf(sb
, _(" (use \"%s\" for details)\n"),
1989 "git status --ahead-behind");
1990 } else if (!theirs
) {
1992 Q_("Your branch is ahead of '%s' by %d commit.\n",
1993 "Your branch is ahead of '%s' by %d commits.\n",
1996 if (advice_status_hints
)
1998 _(" (use \"git push\" to publish your local commits)\n"));
2001 Q_("Your branch is behind '%s' by %d commit, "
2002 "and can be fast-forwarded.\n",
2003 "Your branch is behind '%s' by %d commits, "
2004 "and can be fast-forwarded.\n",
2007 if (advice_status_hints
)
2009 _(" (use \"git pull\" to update your local branch)\n"));
2012 Q_("Your branch and '%s' have diverged,\n"
2013 "and have %d and %d different commit each, "
2015 "Your branch and '%s' have diverged,\n"
2016 "and have %d and %d different commits each, "
2019 base
, ours
, theirs
);
2020 if (advice_status_hints
)
2022 _(" (use \"git pull\" to merge the remote branch into yours)\n"));
2028 static int one_local_ref(const char *refname
, const struct object_id
*oid
,
2029 int flag
, void *cb_data
)
2031 struct ref
***local_tail
= cb_data
;
2034 /* we already know it starts with refs/ to get here */
2035 if (check_refname_format(refname
+ 5, 0))
2038 ref
= alloc_ref(refname
);
2039 oidcpy(&ref
->new_oid
, oid
);
2041 *local_tail
= &ref
->next
;
2045 struct ref
*get_local_heads(void)
2047 struct ref
*local_refs
= NULL
, **local_tail
= &local_refs
;
2049 for_each_ref(one_local_ref
, &local_tail
);
2053 struct ref
*guess_remote_head(const struct ref
*head
,
2054 const struct ref
*refs
,
2057 const struct ref
*r
;
2058 struct ref
*list
= NULL
;
2059 struct ref
**tail
= &list
;
2065 * Some transports support directly peeking at
2066 * where HEAD points; if that is the case, then
2067 * we don't have to guess.
2070 return copy_ref(find_ref_by_name(refs
, head
->symref
));
2072 /* If refs/heads/master could be right, it is. */
2074 r
= find_ref_by_name(refs
, "refs/heads/master");
2075 if (r
&& !oidcmp(&r
->old_oid
, &head
->old_oid
))
2079 /* Look for another ref that points there */
2080 for (r
= refs
; r
; r
= r
->next
) {
2082 starts_with(r
->name
, "refs/heads/") &&
2083 !oidcmp(&r
->old_oid
, &head
->old_oid
)) {
2084 *tail
= copy_ref(r
);
2085 tail
= &((*tail
)->next
);
2094 struct stale_heads_info
{
2095 struct string_list
*ref_names
;
2096 struct ref
**stale_refs_tail
;
2097 struct refspec_item
*refs
;
2101 static int get_stale_heads_cb(const char *refname
, const struct object_id
*oid
,
2102 int flags
, void *cb_data
)
2104 struct stale_heads_info
*info
= cb_data
;
2105 struct string_list matches
= STRING_LIST_INIT_DUP
;
2106 struct refspec_item query
;
2108 memset(&query
, 0, sizeof(struct refspec_item
));
2109 query
.dst
= (char *)refname
;
2111 query_refspecs_multiple(info
->refs
, info
->ref_count
, &query
, &matches
);
2112 if (matches
.nr
== 0)
2113 goto clean_exit
; /* No matches */
2116 * If we did find a suitable refspec and it's not a symref and
2117 * it's not in the list of refs that currently exist in that
2118 * remote, we consider it to be stale. In order to deal with
2119 * overlapping refspecs, we need to go over all of the
2122 if (flags
& REF_ISSYMREF
)
2125 for (i
= 0; stale
&& i
< matches
.nr
; i
++)
2126 if (string_list_has_string(info
->ref_names
, matches
.items
[i
].string
))
2130 struct ref
*ref
= make_linked_ref(refname
, &info
->stale_refs_tail
);
2131 oidcpy(&ref
->new_oid
, oid
);
2135 string_list_clear(&matches
, 0);
2139 struct ref
*get_stale_heads(struct refspec_item
*refs
, int ref_count
, struct ref
*fetch_map
)
2141 struct ref
*ref
, *stale_refs
= NULL
;
2142 struct string_list ref_names
= STRING_LIST_INIT_NODUP
;
2143 struct stale_heads_info info
;
2145 info
.ref_names
= &ref_names
;
2146 info
.stale_refs_tail
= &stale_refs
;
2148 info
.ref_count
= ref_count
;
2149 for (ref
= fetch_map
; ref
; ref
= ref
->next
)
2150 string_list_append(&ref_names
, ref
->name
);
2151 string_list_sort(&ref_names
);
2152 for_each_ref(get_stale_heads_cb
, &info
);
2153 string_list_clear(&ref_names
, 0);
2160 static void clear_cas_option(struct push_cas_option
*cas
)
2164 for (i
= 0; i
< cas
->nr
; i
++)
2165 free(cas
->entry
[i
].refname
);
2167 memset(cas
, 0, sizeof(*cas
));
2170 static struct push_cas
*add_cas_entry(struct push_cas_option
*cas
,
2171 const char *refname
,
2174 struct push_cas
*entry
;
2175 ALLOC_GROW(cas
->entry
, cas
->nr
+ 1, cas
->alloc
);
2176 entry
= &cas
->entry
[cas
->nr
++];
2177 memset(entry
, 0, sizeof(*entry
));
2178 entry
->refname
= xmemdupz(refname
, refnamelen
);
2182 static int parse_push_cas_option(struct push_cas_option
*cas
, const char *arg
, int unset
)
2185 struct push_cas
*entry
;
2188 /* "--no-<option>" */
2189 clear_cas_option(cas
);
2194 /* just "--<option>" */
2195 cas
->use_tracking_for_rest
= 1;
2199 /* "--<option>=refname" or "--<option>=refname:value" */
2200 colon
= strchrnul(arg
, ':');
2201 entry
= add_cas_entry(cas
, arg
, colon
- arg
);
2203 entry
->use_tracking
= 1;
2205 oidclr(&entry
->expect
);
2206 else if (get_oid(colon
+ 1, &entry
->expect
))
2207 return error("cannot parse expected object name '%s'", colon
+ 1);
2211 int parseopt_push_cas_option(const struct option
*opt
, const char *arg
, int unset
)
2213 return parse_push_cas_option(opt
->value
, arg
, unset
);
2216 int is_empty_cas(const struct push_cas_option
*cas
)
2218 return !cas
->use_tracking_for_rest
&& !cas
->nr
;
2222 * Look at remote.fetch refspec and see if we have a remote
2223 * tracking branch for the refname there. Fill its current
2225 * If we cannot do so, return negative to signal an error.
2227 static int remote_tracking(struct remote
*remote
, const char *refname
,
2228 struct object_id
*oid
)
2232 dst
= apply_refspecs(remote
->fetch
, remote
->fetch_refspec_nr
, refname
);
2234 return -1; /* no tracking ref for refname at remote */
2235 if (read_ref(dst
, oid
))
2236 return -1; /* we know what the tracking ref is but we cannot read it */
2240 static void apply_cas(struct push_cas_option
*cas
,
2241 struct remote
*remote
,
2246 /* Find an explicit --<option>=<name>[:<value>] entry */
2247 for (i
= 0; i
< cas
->nr
; i
++) {
2248 struct push_cas
*entry
= &cas
->entry
[i
];
2249 if (!refname_match(entry
->refname
, ref
->name
))
2251 ref
->expect_old_sha1
= 1;
2252 if (!entry
->use_tracking
)
2253 oidcpy(&ref
->old_oid_expect
, &entry
->expect
);
2254 else if (remote_tracking(remote
, ref
->name
, &ref
->old_oid_expect
))
2255 oidclr(&ref
->old_oid_expect
);
2259 /* Are we using "--<option>" to cover all? */
2260 if (!cas
->use_tracking_for_rest
)
2263 ref
->expect_old_sha1
= 1;
2264 if (remote_tracking(remote
, ref
->name
, &ref
->old_oid_expect
))
2265 oidclr(&ref
->old_oid_expect
);
2268 void apply_push_cas(struct push_cas_option
*cas
,
2269 struct remote
*remote
,
2270 struct ref
*remote_refs
)
2273 for (ref
= remote_refs
; ref
; ref
= ref
->next
)
2274 apply_cas(cas
, remote
, ref
);