5 static struct remote
**remotes
;
6 static int allocated_remotes
;
8 static struct branch
**branches
;
9 static int allocated_branches
;
11 static struct branch
*current_branch
;
12 static const char *default_remote_name
;
14 #define BUF_SIZE (2048)
15 static char buffer
[BUF_SIZE
];
17 static void add_push_refspec(struct remote
*remote
, const char *ref
)
19 int nr
= remote
->push_refspec_nr
+ 1;
20 remote
->push_refspec
=
21 xrealloc(remote
->push_refspec
, nr
* sizeof(char *));
22 remote
->push_refspec
[nr
-1] = ref
;
23 remote
->push_refspec_nr
= nr
;
26 static void add_fetch_refspec(struct remote
*remote
, const char *ref
)
28 int nr
= remote
->fetch_refspec_nr
+ 1;
29 remote
->fetch_refspec
=
30 xrealloc(remote
->fetch_refspec
, nr
* sizeof(char *));
31 remote
->fetch_refspec
[nr
-1] = ref
;
32 remote
->fetch_refspec_nr
= nr
;
35 static void add_url(struct remote
*remote
, const char *url
)
37 int nr
= remote
->url_nr
+ 1;
39 xrealloc(remote
->url
, nr
* sizeof(char *));
40 remote
->url
[nr
-1] = url
;
44 static struct remote
*make_remote(const char *name
, int len
)
48 for (i
= 0; i
< allocated_remotes
; i
++) {
53 if (len
? (!strncmp(name
, remotes
[i
]->name
, len
) &&
54 !remotes
[i
]->name
[len
]) :
55 !strcmp(name
, remotes
[i
]->name
))
61 empty
= allocated_remotes
;
62 allocated_remotes
+= allocated_remotes
? allocated_remotes
: 1;
63 remotes
= xrealloc(remotes
,
64 sizeof(*remotes
) * allocated_remotes
);
65 memset(remotes
+ empty
, 0,
66 (allocated_remotes
- empty
) * sizeof(*remotes
));
68 remotes
[empty
] = xcalloc(1, sizeof(struct remote
));
70 remotes
[empty
]->name
= xstrndup(name
, len
);
72 remotes
[empty
]->name
= xstrdup(name
);
73 return remotes
[empty
];
76 static void add_merge(struct branch
*branch
, const char *name
)
78 int nr
= branch
->merge_nr
+ 1;
80 xrealloc(branch
->merge_name
, nr
* sizeof(char *));
81 branch
->merge_name
[nr
-1] = name
;
82 branch
->merge_nr
= nr
;
85 static struct branch
*make_branch(const char *name
, int len
)
90 for (i
= 0; i
< allocated_branches
; i
++) {
95 if (len
? (!strncmp(name
, branches
[i
]->name
, len
) &&
96 !branches
[i
]->name
[len
]) :
97 !strcmp(name
, branches
[i
]->name
))
103 empty
= allocated_branches
;
104 allocated_branches
+= allocated_branches
? allocated_branches
: 1;
105 branches
= xrealloc(branches
,
106 sizeof(*branches
) * allocated_branches
);
107 memset(branches
+ empty
, 0,
108 (allocated_branches
- empty
) * sizeof(*branches
));
110 branches
[empty
] = xcalloc(1, sizeof(struct branch
));
112 branches
[empty
]->name
= xstrndup(name
, len
);
114 branches
[empty
]->name
= xstrdup(name
);
115 refname
= malloc(strlen(name
) + strlen("refs/heads/") + 1);
116 strcpy(refname
, "refs/heads/");
117 strcpy(refname
+ strlen("refs/heads/"),
118 branches
[empty
]->name
);
119 branches
[empty
]->refname
= refname
;
121 return branches
[empty
];
124 static void read_remotes_file(struct remote
*remote
)
126 FILE *f
= fopen(git_path("remotes/%s", remote
->name
), "r");
130 while (fgets(buffer
, BUF_SIZE
, f
)) {
134 if (!prefixcmp(buffer
, "URL:")) {
137 } else if (!prefixcmp(buffer
, "Push:")) {
140 } else if (!prefixcmp(buffer
, "Pull:")) {
152 while (isspace(p
[-1]))
155 switch (value_list
) {
157 add_url(remote
, xstrdup(s
));
160 add_push_refspec(remote
, xstrdup(s
));
163 add_fetch_refspec(remote
, xstrdup(s
));
170 static void read_branches_file(struct remote
*remote
)
172 const char *slash
= strchr(remote
->name
, '/');
175 int n
= slash
? slash
- remote
->name
: 1000;
176 FILE *f
= fopen(git_path("branches/%.*s", n
, remote
->name
), "r");
182 s
= fgets(buffer
, BUF_SIZE
, f
);
191 while (isspace(p
[-1]))
195 len
+= strlen(slash
);
196 p
= xmalloc(len
+ 1);
200 frag
= strchr(p
, '#');
203 branch
= xmalloc(strlen(frag
) + 12);
204 strcpy(branch
, "refs/heads/");
205 strcat(branch
, frag
);
207 branch
= "refs/heads/master";
210 add_fetch_refspec(remote
, branch
);
211 remote
->fetch_tags
= 1; /* always auto-follow */
214 static int handle_config(const char *key
, const char *value
)
218 struct remote
*remote
;
219 struct branch
*branch
;
220 if (!prefixcmp(key
, "branch.")) {
222 subkey
= strrchr(name
, '.');
223 branch
= make_branch(name
, subkey
- name
);
228 if (!strcmp(subkey
, ".remote")) {
229 branch
->remote_name
= xstrdup(value
);
230 if (branch
== current_branch
)
231 default_remote_name
= branch
->remote_name
;
232 } else if (!strcmp(subkey
, ".merge"))
233 add_merge(branch
, xstrdup(value
));
236 if (prefixcmp(key
, "remote."))
239 subkey
= strrchr(name
, '.');
241 return error("Config with no key for remote %s", name
);
242 if (*subkey
== '/') {
243 warning("Config remote shorthand cannot begin with '/': %s", name
);
246 remote
= make_remote(name
, subkey
- name
);
248 /* if we ever have a boolean variable, e.g. "remote.*.disabled"
251 * is a valid way to set it to true; we get NULL in value so
252 * we need to handle it here.
254 * if (!strcmp(subkey, ".disabled")) {
255 * val = git_config_bool(key, value);
260 return 0; /* ignore unknown booleans */
262 if (!strcmp(subkey
, ".url")) {
263 add_url(remote
, xstrdup(value
));
264 } else if (!strcmp(subkey
, ".push")) {
265 add_push_refspec(remote
, xstrdup(value
));
266 } else if (!strcmp(subkey
, ".fetch")) {
267 add_fetch_refspec(remote
, xstrdup(value
));
268 } else if (!strcmp(subkey
, ".receivepack")) {
269 if (!remote
->receivepack
)
270 remote
->receivepack
= xstrdup(value
);
272 error("more than one receivepack given, using the first");
273 } else if (!strcmp(subkey
, ".uploadpack")) {
274 if (!remote
->uploadpack
)
275 remote
->uploadpack
= xstrdup(value
);
277 error("more than one uploadpack given, using the first");
278 } else if (!strcmp(subkey
, ".tagopt")) {
279 if (!strcmp(value
, "--no-tags"))
280 remote
->fetch_tags
= -1;
285 static void read_config(void)
287 unsigned char sha1
[20];
288 const char *head_ref
;
290 if (default_remote_name
) // did this already
292 default_remote_name
= xstrdup("origin");
293 current_branch
= NULL
;
294 head_ref
= resolve_ref("HEAD", sha1
, 0, &flag
);
295 if (head_ref
&& (flag
& REF_ISSYMREF
) &&
296 !prefixcmp(head_ref
, "refs/heads/")) {
298 make_branch(head_ref
+ strlen("refs/heads/"), 0);
300 git_config(handle_config
);
303 struct refspec
*parse_ref_spec(int nr_refspec
, const char **refspec
)
306 struct refspec
*rs
= xcalloc(sizeof(*rs
), nr_refspec
);
307 for (i
= 0; i
< nr_refspec
; i
++) {
308 const char *sp
, *ep
, *gp
;
314 gp
= strchr(sp
, '*');
315 ep
= strchr(sp
, ':');
316 if (gp
&& ep
&& gp
> ep
)
320 const char *glob
= strchr(ep
+ 1, '*');
324 rs
[i
].dst
= xstrndup(ep
+ 1,
327 rs
[i
].dst
= xstrdup(ep
+ 1);
330 ep
= sp
+ strlen(sp
);
336 rs
[i
].src
= xstrndup(sp
, ep
- sp
);
341 struct remote
*remote_get(const char *name
)
347 name
= default_remote_name
;
348 ret
= make_remote(name
, 0);
349 if (name
[0] != '/') {
351 read_remotes_file(ret
);
353 read_branches_file(ret
);
359 ret
->fetch
= parse_ref_spec(ret
->fetch_refspec_nr
, ret
->fetch_refspec
);
360 ret
->push
= parse_ref_spec(ret
->push_refspec_nr
, ret
->push_refspec
);
364 int for_each_remote(each_remote_fn fn
, void *priv
)
368 for (i
= 0; i
< allocated_remotes
&& !result
; i
++) {
369 struct remote
*r
= remotes
[i
];
373 r
->fetch
= parse_ref_spec(r
->fetch_refspec_nr
,
376 r
->push
= parse_ref_spec(r
->push_refspec_nr
,
378 result
= fn(r
, priv
);
383 int remote_has_url(struct remote
*remote
, const char *url
)
386 for (i
= 0; i
< remote
->url_nr
; i
++) {
387 if (!strcmp(remote
->url
[i
], url
))
394 * Returns true if, under the matching rules for fetching, name is the
395 * same as the given full name.
397 static int ref_matches_abbrev(const char *name
, const char *full
)
399 if (!prefixcmp(name
, "refs/") || !strcmp(name
, "HEAD"))
400 return !strcmp(name
, full
);
401 if (prefixcmp(full
, "refs/"))
403 if (!prefixcmp(name
, "heads/") ||
404 !prefixcmp(name
, "tags/") ||
405 !prefixcmp(name
, "remotes/"))
406 return !strcmp(name
, full
+ 5);
407 if (prefixcmp(full
+ 5, "heads/"))
409 return !strcmp(full
+ 11, name
);
412 int remote_find_tracking(struct remote
*remote
, struct refspec
*refspec
)
414 int find_src
= refspec
->src
== NULL
;
415 char *needle
, **result
;
420 return error("find_tracking: need either src or dst");
421 needle
= refspec
->dst
;
422 result
= &refspec
->src
;
424 needle
= refspec
->src
;
425 result
= &refspec
->dst
;
428 for (i
= 0; i
< remote
->fetch_refspec_nr
; i
++) {
429 struct refspec
*fetch
= &remote
->fetch
[i
];
430 const char *key
= find_src
? fetch
->dst
: fetch
->src
;
431 const char *value
= find_src
? fetch
->src
: fetch
->dst
;
434 if (fetch
->pattern
) {
435 if (!prefixcmp(needle
, key
)) {
436 *result
= xmalloc(strlen(value
) +
439 strcpy(*result
, value
);
440 strcpy(*result
+ strlen(value
),
441 needle
+ strlen(key
));
442 refspec
->force
= fetch
->force
;
445 } else if (!strcmp(needle
, key
)) {
446 *result
= xstrdup(value
);
447 refspec
->force
= fetch
->force
;
454 struct ref
*alloc_ref(unsigned namelen
)
456 struct ref
*ret
= xmalloc(sizeof(struct ref
) + namelen
);
457 memset(ret
, 0, sizeof(struct ref
) + namelen
);
461 static struct ref
*copy_ref(struct ref
*ref
)
463 struct ref
*ret
= xmalloc(sizeof(struct ref
) + strlen(ref
->name
) + 1);
464 memcpy(ret
, ref
, sizeof(struct ref
) + strlen(ref
->name
) + 1);
469 void free_refs(struct ref
*ref
)
481 static int count_refspec_match(const char *pattern
,
483 struct ref
**matched_ref
)
485 int patlen
= strlen(pattern
);
486 struct ref
*matched_weak
= NULL
;
487 struct ref
*matched
= NULL
;
491 for (weak_match
= match
= 0; refs
; refs
= refs
->next
) {
492 char *name
= refs
->name
;
493 int namelen
= strlen(name
);
495 if (namelen
< patlen
||
496 memcmp(name
+ namelen
- patlen
, pattern
, patlen
))
498 if (namelen
!= patlen
&& name
[namelen
- patlen
- 1] != '/')
501 /* A match is "weak" if it is with refs outside
502 * heads or tags, and did not specify the pattern
503 * in full (e.g. "refs/remotes/origin/master") or at
504 * least from the toplevel (e.g. "remotes/origin/master");
505 * otherwise "git push $URL master" would result in
506 * ambiguity between remotes/origin/master and heads/master
507 * at the remote site.
509 if (namelen
!= patlen
&&
510 patlen
!= namelen
- 5 &&
511 prefixcmp(name
, "refs/heads/") &&
512 prefixcmp(name
, "refs/tags/")) {
513 /* We want to catch the case where only weak
514 * matches are found and there are multiple
515 * matches, and where more than one strong
516 * matches are found, as ambiguous. One
517 * strong match with zero or more weak matches
518 * are acceptable as a unique match.
529 *matched_ref
= matched_weak
;
533 *matched_ref
= matched
;
538 static void tail_link_ref(struct ref
*ref
, struct ref
***tail
)
546 static struct ref
*try_explicit_object_name(const char *name
)
548 unsigned char sha1
[20];
554 strcpy(ref
->name
, "(delete)");
555 hashclr(ref
->new_sha1
);
558 if (get_sha1(name
, sha1
))
560 len
= strlen(name
) + 1;
561 ref
= alloc_ref(len
);
562 memcpy(ref
->name
, name
, len
);
563 hashcpy(ref
->new_sha1
, sha1
);
567 static struct ref
*make_linked_ref(const char *name
, struct ref
***tail
)
572 len
= strlen(name
) + 1;
573 ret
= alloc_ref(len
);
574 memcpy(ret
->name
, name
, len
);
575 tail_link_ref(ret
, tail
);
579 static int match_explicit(struct ref
*src
, struct ref
*dst
,
580 struct ref
***dst_tail
,
584 struct ref
*matched_src
, *matched_dst
;
586 const char *dst_value
= rs
->dst
;
591 matched_src
= matched_dst
= NULL
;
592 switch (count_refspec_match(rs
->src
, src
, &matched_src
)) {
596 /* The source could be in the get_sha1() format
597 * not a reference name. :refs/other is a
598 * way to delete 'other' ref at the remote end.
600 matched_src
= try_explicit_object_name(rs
->src
);
602 error("src refspec %s does not match any.", rs
->src
);
606 error("src refspec %s matches more than one.", rs
->src
);
614 dst_value
= matched_src
->name
;
616 switch (count_refspec_match(dst_value
, dst
, &matched_dst
)) {
620 if (!memcmp(dst_value
, "refs/", 5))
621 matched_dst
= make_linked_ref(dst_value
, dst_tail
);
623 error("dst refspec %s does not match any "
624 "existing ref on the remote and does "
625 "not start with refs/.", dst_value
);
629 error("dst refspec %s matches more than one.",
633 if (errs
|| !matched_dst
)
635 if (matched_dst
->peer_ref
) {
637 error("dst ref %s receives from more than one src.",
641 matched_dst
->peer_ref
= matched_src
;
642 matched_dst
->force
= rs
->force
;
647 static int match_explicit_refs(struct ref
*src
, struct ref
*dst
,
648 struct ref
***dst_tail
, struct refspec
*rs
,
652 for (i
= errs
= 0; i
< rs_nr
; i
++)
653 errs
|= match_explicit(src
, dst
, dst_tail
, &rs
[i
], errs
);
657 static struct ref
*find_ref_by_name(struct ref
*list
, const char *name
)
659 for ( ; list
; list
= list
->next
)
660 if (!strcmp(list
->name
, name
))
665 static const struct refspec
*check_pattern_match(const struct refspec
*rs
,
667 const struct ref
*src
)
670 for (i
= 0; i
< rs_nr
; i
++) {
671 if (rs
[i
].pattern
&& !prefixcmp(src
->name
, rs
[i
].src
))
678 * Note. This is used only by "push"; refspec matching rules for
679 * push and fetch are subtly different, so do not try to reuse it
682 int match_refs(struct ref
*src
, struct ref
*dst
, struct ref
***dst_tail
,
683 int nr_refspec
, char **refspec
, int all
)
686 parse_ref_spec(nr_refspec
, (const char **) refspec
);
688 if (match_explicit_refs(src
, dst
, dst_tail
, rs
, nr_refspec
))
691 /* pick the remainder */
692 for ( ; src
; src
= src
->next
) {
693 struct ref
*dst_peer
;
694 const struct refspec
*pat
= NULL
;
699 pat
= check_pattern_match(rs
, nr_refspec
, src
);
703 else if (prefixcmp(src
->name
, "refs/heads/"))
705 * "matching refs"; traditionally we pushed everything
706 * including refs outside refs/heads/ hierarchy, but
707 * that does not make much sense these days.
712 const char *dst_side
= pat
->dst
? pat
->dst
: pat
->src
;
713 dst_name
= xmalloc(strlen(dst_side
) +
715 strlen(pat
->src
) + 2);
716 strcpy(dst_name
, dst_side
);
717 strcat(dst_name
, src
->name
+ strlen(pat
->src
));
719 dst_name
= xstrdup(src
->name
);
720 dst_peer
= find_ref_by_name(dst
, dst_name
);
721 if (dst_peer
&& dst_peer
->peer_ref
)
722 /* We're already sending something to this ref. */
724 if (!dst_peer
&& !nr_refspec
&& !all
)
725 /* Remote doesn't have it, and we have no
726 * explicit pattern, and we don't have
730 /* Create a new one and link it */
731 dst_peer
= make_linked_ref(dst_name
, dst_tail
);
732 hashcpy(dst_peer
->new_sha1
, src
->new_sha1
);
734 dst_peer
->peer_ref
= src
;
741 struct branch
*branch_get(const char *name
)
746 if (!name
|| !*name
|| !strcmp(name
, "HEAD"))
747 ret
= current_branch
;
749 ret
= make_branch(name
, 0);
750 if (ret
&& ret
->remote_name
) {
751 ret
->remote
= remote_get(ret
->remote_name
);
754 ret
->merge
= xcalloc(sizeof(*ret
->merge
),
756 for (i
= 0; i
< ret
->merge_nr
; i
++) {
757 ret
->merge
[i
] = xcalloc(1, sizeof(**ret
->merge
));
758 ret
->merge
[i
]->src
= xstrdup(ret
->merge_name
[i
]);
759 remote_find_tracking(ret
->remote
,
767 int branch_has_merge_config(struct branch
*branch
)
769 return branch
&& !!branch
->merge
;
772 int branch_merge_matches(struct branch
*branch
,
776 if (!branch
|| i
< 0 || i
>= branch
->merge_nr
)
778 return ref_matches_abbrev(branch
->merge
[i
]->src
, refname
);
781 static struct ref
*get_expanded_map(struct ref
*remote_refs
,
782 const struct refspec
*refspec
)
785 struct ref
*ret
= NULL
;
786 struct ref
**tail
= &ret
;
788 int remote_prefix_len
= strlen(refspec
->src
);
789 int local_prefix_len
= strlen(refspec
->dst
);
791 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
792 if (strchr(ref
->name
, '^'))
793 continue; /* a dereference item */
794 if (!prefixcmp(ref
->name
, refspec
->src
)) {
796 struct ref
*cpy
= copy_ref(ref
);
797 match
= ref
->name
+ remote_prefix_len
;
799 cpy
->peer_ref
= alloc_ref(local_prefix_len
+
801 sprintf(cpy
->peer_ref
->name
, "%s%s",
802 refspec
->dst
, match
);
804 cpy
->peer_ref
->force
= 1;
813 static struct ref
*find_ref_by_name_abbrev(struct ref
*refs
, const char *name
)
816 for (ref
= refs
; ref
; ref
= ref
->next
) {
817 if (ref_matches_abbrev(name
, ref
->name
))
823 struct ref
*get_remote_ref(struct ref
*remote_refs
, const char *name
)
825 struct ref
*ref
= find_ref_by_name_abbrev(remote_refs
, name
);
828 die("Couldn't find remote ref %s\n", name
);
830 return copy_ref(ref
);
833 static struct ref
*get_local_ref(const char *name
)
839 if (!prefixcmp(name
, "refs/")) {
840 ret
= alloc_ref(strlen(name
) + 1);
841 strcpy(ret
->name
, name
);
845 if (!prefixcmp(name
, "heads/") ||
846 !prefixcmp(name
, "tags/") ||
847 !prefixcmp(name
, "remotes/")) {
848 ret
= alloc_ref(strlen(name
) + 6);
849 sprintf(ret
->name
, "refs/%s", name
);
853 ret
= alloc_ref(strlen(name
) + 12);
854 sprintf(ret
->name
, "refs/heads/%s", name
);
858 int get_fetch_map(struct ref
*remote_refs
,
859 const struct refspec
*refspec
,
862 struct ref
*ref_map
, *rm
;
864 if (refspec
->pattern
) {
865 ref_map
= get_expanded_map(remote_refs
, refspec
);
867 ref_map
= get_remote_ref(remote_refs
,
869 refspec
->src
: "HEAD");
871 ref_map
->peer_ref
= get_local_ref(refspec
->dst
);
872 if (ref_map
->peer_ref
&& refspec
->force
)
873 ref_map
->peer_ref
->force
= 1;
876 for (rm
= ref_map
; rm
; rm
= rm
->next
) {
877 if (rm
->peer_ref
&& check_ref_format(rm
->peer_ref
->name
+ 5))
878 die("* refusing to create funny ref '%s' locally",
882 tail_link_ref(ref_map
, tail
);