5 static struct remote
**remotes
;
6 static int remotes_alloc
;
9 static struct branch
**branches
;
10 static int branches_alloc
;
11 static int branches_nr
;
13 static struct branch
*current_branch
;
14 static const char *default_remote_name
;
16 #define BUF_SIZE (2048)
17 static char buffer
[BUF_SIZE
];
19 static void add_push_refspec(struct remote
*remote
, const char *ref
)
21 ALLOC_GROW(remote
->push_refspec
,
22 remote
->push_refspec_nr
+ 1,
23 remote
->push_refspec_alloc
);
24 remote
->push_refspec
[remote
->push_refspec_nr
++] = ref
;
27 static void add_fetch_refspec(struct remote
*remote
, const char *ref
)
29 ALLOC_GROW(remote
->fetch_refspec
,
30 remote
->fetch_refspec_nr
+ 1,
31 remote
->fetch_refspec_alloc
);
32 remote
->fetch_refspec
[remote
->fetch_refspec_nr
++] = ref
;
35 static void add_url(struct remote
*remote
, const char *url
)
37 ALLOC_GROW(remote
->url
, remote
->url_nr
+ 1, remote
->url_alloc
);
38 remote
->url
[remote
->url_nr
++] = url
;
41 static struct remote
*make_remote(const char *name
, int len
)
46 for (i
= 0; i
< remotes_nr
; i
++) {
47 if (len
? (!strncmp(name
, remotes
[i
]->name
, len
) &&
48 !remotes
[i
]->name
[len
]) :
49 !strcmp(name
, remotes
[i
]->name
))
53 ret
= xcalloc(1, sizeof(struct remote
));
54 ALLOC_GROW(remotes
, remotes_nr
+ 1, remotes_alloc
);
55 remotes
[remotes_nr
++] = ret
;
57 ret
->name
= xstrndup(name
, len
);
59 ret
->name
= xstrdup(name
);
63 static void add_merge(struct branch
*branch
, const char *name
)
65 ALLOC_GROW(branch
->merge_name
, branch
->merge_nr
+ 1,
67 branch
->merge_name
[branch
->merge_nr
++] = name
;
70 static struct branch
*make_branch(const char *name
, int len
)
76 for (i
= 0; i
< branches_nr
; i
++) {
77 if (len
? (!strncmp(name
, branches
[i
]->name
, len
) &&
78 !branches
[i
]->name
[len
]) :
79 !strcmp(name
, branches
[i
]->name
))
83 ALLOC_GROW(branches
, branches_nr
+ 1, branches_alloc
);
84 ret
= xcalloc(1, sizeof(struct branch
));
85 branches
[branches_nr
++] = ret
;
87 ret
->name
= xstrndup(name
, len
);
89 ret
->name
= xstrdup(name
);
90 refname
= malloc(strlen(name
) + strlen("refs/heads/") + 1);
91 strcpy(refname
, "refs/heads/");
92 strcpy(refname
+ strlen("refs/heads/"), ret
->name
);
93 ret
->refname
= refname
;
98 static void read_remotes_file(struct remote
*remote
)
100 FILE *f
= fopen(git_path("remotes/%s", remote
->name
), "r");
104 while (fgets(buffer
, BUF_SIZE
, f
)) {
108 if (!prefixcmp(buffer
, "URL:")) {
111 } else if (!prefixcmp(buffer
, "Push:")) {
114 } else if (!prefixcmp(buffer
, "Pull:")) {
126 while (isspace(p
[-1]))
129 switch (value_list
) {
131 add_url(remote
, xstrdup(s
));
134 add_push_refspec(remote
, xstrdup(s
));
137 add_fetch_refspec(remote
, xstrdup(s
));
144 static void read_branches_file(struct remote
*remote
)
146 const char *slash
= strchr(remote
->name
, '/');
149 int n
= slash
? slash
- remote
->name
: 1000;
150 FILE *f
= fopen(git_path("branches/%.*s", n
, remote
->name
), "r");
156 s
= fgets(buffer
, BUF_SIZE
, f
);
165 while (isspace(p
[-1]))
169 len
+= strlen(slash
);
170 p
= xmalloc(len
+ 1);
174 frag
= strchr(p
, '#');
177 branch
= xmalloc(strlen(frag
) + 12);
178 strcpy(branch
, "refs/heads/");
179 strcat(branch
, frag
);
181 branch
= "refs/heads/master";
184 add_fetch_refspec(remote
, branch
);
185 remote
->fetch_tags
= 1; /* always auto-follow */
188 static int handle_config(const char *key
, const char *value
)
192 struct remote
*remote
;
193 struct branch
*branch
;
194 if (!prefixcmp(key
, "branch.")) {
196 subkey
= strrchr(name
, '.');
199 branch
= make_branch(name
, subkey
- name
);
200 if (!strcmp(subkey
, ".remote")) {
202 return config_error_nonbool(key
);
203 branch
->remote_name
= xstrdup(value
);
204 if (branch
== current_branch
)
205 default_remote_name
= branch
->remote_name
;
206 } else if (!strcmp(subkey
, ".merge")) {
208 return config_error_nonbool(key
);
209 add_merge(branch
, xstrdup(value
));
213 if (prefixcmp(key
, "remote."))
216 subkey
= strrchr(name
, '.');
218 return error("Config with no key for remote %s", name
);
219 if (*subkey
== '/') {
220 warning("Config remote shorthand cannot begin with '/': %s", name
);
223 remote
= make_remote(name
, subkey
- name
);
225 /* if we ever have a boolean variable, e.g. "remote.*.disabled"
228 * is a valid way to set it to true; we get NULL in value so
229 * we need to handle it here.
231 * if (!strcmp(subkey, ".disabled")) {
232 * val = git_config_bool(key, value);
237 return 0; /* ignore unknown booleans */
239 if (!strcmp(subkey
, ".url")) {
240 add_url(remote
, xstrdup(value
));
241 } else if (!strcmp(subkey
, ".push")) {
242 add_push_refspec(remote
, xstrdup(value
));
243 } else if (!strcmp(subkey
, ".fetch")) {
244 add_fetch_refspec(remote
, xstrdup(value
));
245 } else if (!strcmp(subkey
, ".receivepack")) {
246 if (!remote
->receivepack
)
247 remote
->receivepack
= xstrdup(value
);
249 error("more than one receivepack given, using the first");
250 } else if (!strcmp(subkey
, ".uploadpack")) {
251 if (!remote
->uploadpack
)
252 remote
->uploadpack
= xstrdup(value
);
254 error("more than one uploadpack given, using the first");
255 } else if (!strcmp(subkey
, ".tagopt")) {
256 if (!strcmp(value
, "--no-tags"))
257 remote
->fetch_tags
= -1;
258 } else if (!strcmp(subkey
, ".proxy")) {
259 remote
->http_proxy
= xstrdup(value
);
264 static void read_config(void)
266 unsigned char sha1
[20];
267 const char *head_ref
;
269 if (default_remote_name
) // did this already
271 default_remote_name
= xstrdup("origin");
272 current_branch
= NULL
;
273 head_ref
= resolve_ref("HEAD", sha1
, 0, &flag
);
274 if (head_ref
&& (flag
& REF_ISSYMREF
) &&
275 !prefixcmp(head_ref
, "refs/heads/")) {
277 make_branch(head_ref
+ strlen("refs/heads/"), 0);
279 git_config(handle_config
);
282 struct refspec
*parse_ref_spec(int nr_refspec
, const char **refspec
)
285 struct refspec
*rs
= xcalloc(sizeof(*rs
), nr_refspec
);
286 for (i
= 0; i
< nr_refspec
; i
++) {
287 const char *sp
, *ep
, *gp
;
293 gp
= strchr(sp
, '*');
294 ep
= strchr(sp
, ':');
295 if (gp
&& ep
&& gp
> ep
)
299 const char *glob
= strchr(ep
+ 1, '*');
303 rs
[i
].dst
= xstrndup(ep
+ 1,
306 rs
[i
].dst
= xstrdup(ep
+ 1);
309 ep
= sp
+ strlen(sp
);
315 rs
[i
].src
= xstrndup(sp
, ep
- sp
);
320 static int valid_remote_nick(const char *name
)
322 if (!name
[0] || /* not empty */
323 (name
[0] == '.' && /* not "." */
324 (!name
[1] || /* not ".." */
325 (name
[1] == '.' && !name
[2]))))
327 return !strchr(name
, '/'); /* no slash */
330 struct remote
*remote_get(const char *name
)
336 name
= default_remote_name
;
337 ret
= make_remote(name
, 0);
338 if (valid_remote_nick(name
)) {
340 read_remotes_file(ret
);
342 read_branches_file(ret
);
348 ret
->fetch
= parse_ref_spec(ret
->fetch_refspec_nr
, ret
->fetch_refspec
);
349 ret
->push
= parse_ref_spec(ret
->push_refspec_nr
, ret
->push_refspec
);
353 int for_each_remote(each_remote_fn fn
, void *priv
)
357 for (i
= 0; i
< remotes_nr
&& !result
; i
++) {
358 struct remote
*r
= remotes
[i
];
362 r
->fetch
= parse_ref_spec(r
->fetch_refspec_nr
,
365 r
->push
= parse_ref_spec(r
->push_refspec_nr
,
367 result
= fn(r
, priv
);
372 void ref_remove_duplicates(struct ref
*ref_map
)
376 for (; ref_map
; ref_map
= ref_map
->next
) {
377 if (!ref_map
->peer_ref
)
379 posn
= &ref_map
->next
;
381 if ((*posn
)->peer_ref
&&
382 !strcmp((*posn
)->peer_ref
->name
,
383 ref_map
->peer_ref
->name
)) {
384 if (strcmp((*posn
)->name
, ref_map
->name
))
385 die("%s tracks both %s and %s",
386 ref_map
->peer_ref
->name
,
387 (*posn
)->name
, ref_map
->name
);
388 next
= (*posn
)->next
;
389 free((*posn
)->peer_ref
);
393 posn
= &(*posn
)->next
;
399 int remote_has_url(struct remote
*remote
, const char *url
)
402 for (i
= 0; i
< remote
->url_nr
; i
++) {
403 if (!strcmp(remote
->url
[i
], url
))
409 int remote_find_tracking(struct remote
*remote
, struct refspec
*refspec
)
411 int find_src
= refspec
->src
== NULL
;
412 char *needle
, **result
;
417 return error("find_tracking: need either src or dst");
418 needle
= refspec
->dst
;
419 result
= &refspec
->src
;
421 needle
= refspec
->src
;
422 result
= &refspec
->dst
;
425 for (i
= 0; i
< remote
->fetch_refspec_nr
; i
++) {
426 struct refspec
*fetch
= &remote
->fetch
[i
];
427 const char *key
= find_src
? fetch
->dst
: fetch
->src
;
428 const char *value
= find_src
? fetch
->src
: fetch
->dst
;
431 if (fetch
->pattern
) {
432 if (!prefixcmp(needle
, key
)) {
433 *result
= xmalloc(strlen(value
) +
436 strcpy(*result
, value
);
437 strcpy(*result
+ strlen(value
),
438 needle
+ strlen(key
));
439 refspec
->force
= fetch
->force
;
442 } else if (!strcmp(needle
, key
)) {
443 *result
= xstrdup(value
);
444 refspec
->force
= fetch
->force
;
451 struct ref
*alloc_ref(unsigned namelen
)
453 struct ref
*ret
= xmalloc(sizeof(struct ref
) + namelen
);
454 memset(ret
, 0, sizeof(struct ref
) + namelen
);
458 static struct ref
*copy_ref(const struct ref
*ref
)
460 struct ref
*ret
= xmalloc(sizeof(struct ref
) + strlen(ref
->name
) + 1);
461 memcpy(ret
, ref
, sizeof(struct ref
) + strlen(ref
->name
) + 1);
466 struct ref
*copy_ref_list(const struct ref
*ref
)
468 struct ref
*ret
= NULL
;
469 struct ref
**tail
= &ret
;
471 *tail
= copy_ref(ref
);
473 tail
= &((*tail
)->next
);
478 void free_refs(struct ref
*ref
)
490 static int count_refspec_match(const char *pattern
,
492 struct ref
**matched_ref
)
494 int patlen
= strlen(pattern
);
495 struct ref
*matched_weak
= NULL
;
496 struct ref
*matched
= NULL
;
500 for (weak_match
= match
= 0; refs
; refs
= refs
->next
) {
501 char *name
= refs
->name
;
502 int namelen
= strlen(name
);
504 if (!refname_match(pattern
, name
, ref_rev_parse_rules
))
507 /* A match is "weak" if it is with refs outside
508 * heads or tags, and did not specify the pattern
509 * in full (e.g. "refs/remotes/origin/master") or at
510 * least from the toplevel (e.g. "remotes/origin/master");
511 * otherwise "git push $URL master" would result in
512 * ambiguity between remotes/origin/master and heads/master
513 * at the remote site.
515 if (namelen
!= patlen
&&
516 patlen
!= namelen
- 5 &&
517 prefixcmp(name
, "refs/heads/") &&
518 prefixcmp(name
, "refs/tags/")) {
519 /* We want to catch the case where only weak
520 * matches are found and there are multiple
521 * matches, and where more than one strong
522 * matches are found, as ambiguous. One
523 * strong match with zero or more weak matches
524 * are acceptable as a unique match.
535 *matched_ref
= matched_weak
;
539 *matched_ref
= matched
;
544 static void tail_link_ref(struct ref
*ref
, struct ref
***tail
)
552 static struct ref
*try_explicit_object_name(const char *name
)
554 unsigned char sha1
[20];
560 strcpy(ref
->name
, "(delete)");
561 hashclr(ref
->new_sha1
);
564 if (get_sha1(name
, sha1
))
566 len
= strlen(name
) + 1;
567 ref
= alloc_ref(len
);
568 memcpy(ref
->name
, name
, len
);
569 hashcpy(ref
->new_sha1
, sha1
);
573 static struct ref
*make_linked_ref(const char *name
, struct ref
***tail
)
578 len
= strlen(name
) + 1;
579 ret
= alloc_ref(len
);
580 memcpy(ret
->name
, name
, len
);
581 tail_link_ref(ret
, tail
);
585 static int match_explicit(struct ref
*src
, struct ref
*dst
,
586 struct ref
***dst_tail
,
590 struct ref
*matched_src
, *matched_dst
;
592 const char *dst_value
= rs
->dst
;
597 matched_src
= matched_dst
= NULL
;
598 switch (count_refspec_match(rs
->src
, src
, &matched_src
)) {
602 /* The source could be in the get_sha1() format
603 * not a reference name. :refs/other is a
604 * way to delete 'other' ref at the remote end.
606 matched_src
= try_explicit_object_name(rs
->src
);
608 error("src refspec %s does not match any.", rs
->src
);
612 error("src refspec %s matches more than one.", rs
->src
);
622 dst_value
= matched_src
->name
;
625 switch (count_refspec_match(dst_value
, dst
, &matched_dst
)) {
629 if (!memcmp(dst_value
, "refs/", 5))
630 matched_dst
= make_linked_ref(dst_value
, dst_tail
);
632 error("dst refspec %s does not match any "
633 "existing ref on the remote and does "
634 "not start with refs/.", dst_value
);
638 error("dst refspec %s matches more than one.",
642 if (errs
|| !matched_dst
)
644 if (matched_dst
->peer_ref
) {
646 error("dst ref %s receives from more than one src.",
650 matched_dst
->peer_ref
= matched_src
;
651 matched_dst
->force
= rs
->force
;
656 static int match_explicit_refs(struct ref
*src
, struct ref
*dst
,
657 struct ref
***dst_tail
, struct refspec
*rs
,
661 for (i
= errs
= 0; i
< rs_nr
; i
++)
662 errs
|= match_explicit(src
, dst
, dst_tail
, &rs
[i
], errs
);
666 static const struct refspec
*check_pattern_match(const struct refspec
*rs
,
668 const struct ref
*src
)
671 for (i
= 0; i
< rs_nr
; i
++) {
672 if (rs
[i
].pattern
&& !prefixcmp(src
->name
, rs
[i
].src
))
679 * Note. This is used only by "push"; refspec matching rules for
680 * push and fetch are subtly different, so do not try to reuse it
683 int match_refs(struct ref
*src
, struct ref
*dst
, struct ref
***dst_tail
,
684 int nr_refspec
, const char **refspec
, int flags
)
687 parse_ref_spec(nr_refspec
, (const char **) refspec
);
688 int send_all
= flags
& MATCH_REFS_ALL
;
689 int send_mirror
= flags
& MATCH_REFS_MIRROR
;
691 if (match_explicit_refs(src
, dst
, dst_tail
, rs
, nr_refspec
))
694 /* pick the remainder */
695 for ( ; src
; src
= src
->next
) {
696 struct ref
*dst_peer
;
697 const struct refspec
*pat
= NULL
;
702 pat
= check_pattern_match(rs
, nr_refspec
, src
);
706 else if (!send_mirror
&& prefixcmp(src
->name
, "refs/heads/"))
708 * "matching refs"; traditionally we pushed everything
709 * including refs outside refs/heads/ hierarchy, but
710 * that does not make much sense these days.
715 const char *dst_side
= pat
->dst
? pat
->dst
: pat
->src
;
716 dst_name
= xmalloc(strlen(dst_side
) +
718 strlen(pat
->src
) + 2);
719 strcpy(dst_name
, dst_side
);
720 strcat(dst_name
, src
->name
+ strlen(pat
->src
));
722 dst_name
= xstrdup(src
->name
);
723 dst_peer
= find_ref_by_name(dst
, dst_name
);
724 if (dst_peer
&& dst_peer
->peer_ref
)
725 /* We're already sending something to this ref. */
728 if (!dst_peer
&& !nr_refspec
&& !(send_all
|| send_mirror
))
730 * Remote doesn't have it, and we have no
731 * explicit pattern, and we don't have
732 * --all nor --mirror.
736 /* Create a new one and link it */
737 dst_peer
= make_linked_ref(dst_name
, dst_tail
);
738 hashcpy(dst_peer
->new_sha1
, src
->new_sha1
);
740 dst_peer
->peer_ref
= src
;
742 dst_peer
->force
= pat
->force
;
749 struct branch
*branch_get(const char *name
)
754 if (!name
|| !*name
|| !strcmp(name
, "HEAD"))
755 ret
= current_branch
;
757 ret
= make_branch(name
, 0);
758 if (ret
&& ret
->remote_name
) {
759 ret
->remote
= remote_get(ret
->remote_name
);
762 ret
->merge
= xcalloc(sizeof(*ret
->merge
),
764 for (i
= 0; i
< ret
->merge_nr
; i
++) {
765 ret
->merge
[i
] = xcalloc(1, sizeof(**ret
->merge
));
766 ret
->merge
[i
]->src
= xstrdup(ret
->merge_name
[i
]);
767 remote_find_tracking(ret
->remote
,
775 int branch_has_merge_config(struct branch
*branch
)
777 return branch
&& !!branch
->merge
;
780 int branch_merge_matches(struct branch
*branch
,
784 if (!branch
|| i
< 0 || i
>= branch
->merge_nr
)
786 return refname_match(branch
->merge
[i
]->src
, refname
, ref_fetch_rules
);
789 static struct ref
*get_expanded_map(const struct ref
*remote_refs
,
790 const struct refspec
*refspec
)
792 const struct ref
*ref
;
793 struct ref
*ret
= NULL
;
794 struct ref
**tail
= &ret
;
796 int remote_prefix_len
= strlen(refspec
->src
);
797 int local_prefix_len
= strlen(refspec
->dst
);
799 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
800 if (strchr(ref
->name
, '^'))
801 continue; /* a dereference item */
802 if (!prefixcmp(ref
->name
, refspec
->src
)) {
804 struct ref
*cpy
= copy_ref(ref
);
805 match
= ref
->name
+ remote_prefix_len
;
807 cpy
->peer_ref
= alloc_ref(local_prefix_len
+
809 sprintf(cpy
->peer_ref
->name
, "%s%s",
810 refspec
->dst
, match
);
812 cpy
->peer_ref
->force
= 1;
821 static const struct ref
*find_ref_by_name_abbrev(const struct ref
*refs
, const char *name
)
823 const struct ref
*ref
;
824 for (ref
= refs
; ref
; ref
= ref
->next
) {
825 if (refname_match(name
, ref
->name
, ref_fetch_rules
))
831 struct ref
*get_remote_ref(const struct ref
*remote_refs
, const char *name
)
833 const struct ref
*ref
= find_ref_by_name_abbrev(remote_refs
, name
);
838 return copy_ref(ref
);
841 static struct ref
*get_local_ref(const char *name
)
847 if (!prefixcmp(name
, "refs/")) {
848 ret
= alloc_ref(strlen(name
) + 1);
849 strcpy(ret
->name
, name
);
853 if (!prefixcmp(name
, "heads/") ||
854 !prefixcmp(name
, "tags/") ||
855 !prefixcmp(name
, "remotes/")) {
856 ret
= alloc_ref(strlen(name
) + 6);
857 sprintf(ret
->name
, "refs/%s", name
);
861 ret
= alloc_ref(strlen(name
) + 12);
862 sprintf(ret
->name
, "refs/heads/%s", name
);
866 int get_fetch_map(const struct ref
*remote_refs
,
867 const struct refspec
*refspec
,
871 struct ref
*ref_map
, *rm
;
873 if (refspec
->pattern
) {
874 ref_map
= get_expanded_map(remote_refs
, refspec
);
876 const char *name
= refspec
->src
[0] ? refspec
->src
: "HEAD";
878 ref_map
= get_remote_ref(remote_refs
, name
);
879 if (!missing_ok
&& !ref_map
)
880 die("Couldn't find remote ref %s", name
);
882 ref_map
->peer_ref
= get_local_ref(refspec
->dst
);
883 if (ref_map
->peer_ref
&& refspec
->force
)
884 ref_map
->peer_ref
->force
= 1;
888 for (rm
= ref_map
; rm
; rm
= rm
->next
) {
889 if (rm
->peer_ref
&& check_ref_format(rm
->peer_ref
->name
+ 5))
890 die("* refusing to create funny ref '%s' locally",
895 tail_link_ref(ref_map
, tail
);