5 static struct remote
**remotes
;
6 static int allocated_remotes
;
8 #define BUF_SIZE (2048)
9 static char buffer
[BUF_SIZE
];
11 static void add_push_refspec(struct remote
*remote
, const char *ref
)
13 int nr
= remote
->push_refspec_nr
+ 1;
14 remote
->push_refspec
=
15 xrealloc(remote
->push_refspec
, nr
* sizeof(char *));
16 remote
->push_refspec
[nr
-1] = ref
;
17 remote
->push_refspec_nr
= nr
;
20 static void add_fetch_refspec(struct remote
*remote
, const char *ref
)
22 int nr
= remote
->fetch_refspec_nr
+ 1;
23 remote
->fetch_refspec
=
24 xrealloc(remote
->fetch_refspec
, nr
* sizeof(char *));
25 remote
->fetch_refspec
[nr
-1] = ref
;
26 remote
->fetch_refspec_nr
= nr
;
29 static void add_uri(struct remote
*remote
, const char *uri
)
31 int nr
= remote
->uri_nr
+ 1;
33 xrealloc(remote
->uri
, nr
* sizeof(char *));
34 remote
->uri
[nr
-1] = uri
;
38 static struct remote
*make_remote(const char *name
, int len
)
42 for (i
= 0; i
< allocated_remotes
; i
++) {
47 if (len
? (!strncmp(name
, remotes
[i
]->name
, len
) &&
48 !remotes
[i
]->name
[len
]) :
49 !strcmp(name
, remotes
[i
]->name
))
55 empty
= allocated_remotes
;
56 allocated_remotes
+= allocated_remotes
? allocated_remotes
: 1;
57 remotes
= xrealloc(remotes
,
58 sizeof(*remotes
) * allocated_remotes
);
59 memset(remotes
+ empty
, 0,
60 (allocated_remotes
- empty
) * sizeof(*remotes
));
62 remotes
[empty
] = xcalloc(1, sizeof(struct remote
));
64 remotes
[empty
]->name
= xstrndup(name
, len
);
66 remotes
[empty
]->name
= xstrdup(name
);
67 return remotes
[empty
];
70 static void read_remotes_file(struct remote
*remote
)
72 FILE *f
= fopen(git_path("remotes/%s", remote
->name
), "r");
76 while (fgets(buffer
, BUF_SIZE
, f
)) {
80 if (!prefixcmp(buffer
, "URL:")) {
83 } else if (!prefixcmp(buffer
, "Push:")) {
86 } else if (!prefixcmp(buffer
, "Pull:")) {
98 while (isspace(p
[-1]))
101 switch (value_list
) {
103 add_uri(remote
, xstrdup(s
));
106 add_push_refspec(remote
, xstrdup(s
));
109 add_fetch_refspec(remote
, xstrdup(s
));
116 static void read_branches_file(struct remote
*remote
)
118 const char *slash
= strchr(remote
->name
, '/');
119 int n
= slash
? slash
- remote
->name
: 1000;
120 FILE *f
= fopen(git_path("branches/%.*s", n
, remote
->name
), "r");
126 s
= fgets(buffer
, BUF_SIZE
, f
);
135 while (isspace(p
[-1]))
139 len
+= strlen(slash
);
140 p
= xmalloc(len
+ 1);
147 static char *default_remote_name
= NULL
;
148 static const char *current_branch
= NULL
;
149 static int current_branch_len
= 0;
151 static int handle_config(const char *key
, const char *value
)
155 struct remote
*remote
;
156 if (!prefixcmp(key
, "branch.") && current_branch
&&
157 !strncmp(key
+ 7, current_branch
, current_branch_len
) &&
158 !strcmp(key
+ 7 + current_branch_len
, ".remote")) {
159 free(default_remote_name
);
160 default_remote_name
= xstrdup(value
);
162 if (prefixcmp(key
, "remote."))
165 subkey
= strrchr(name
, '.');
167 return error("Config with no key for remote %s", name
);
168 if (*subkey
== '/') {
169 warning("Config remote shorthand cannot begin with '/': %s", name
);
172 remote
= make_remote(name
, subkey
- name
);
174 /* if we ever have a boolean variable, e.g. "remote.*.disabled"
177 * is a valid way to set it to true; we get NULL in value so
178 * we need to handle it here.
180 * if (!strcmp(subkey, ".disabled")) {
181 * val = git_config_bool(key, value);
186 return 0; /* ignore unknown booleans */
188 if (!strcmp(subkey
, ".url")) {
189 add_uri(remote
, xstrdup(value
));
190 } else if (!strcmp(subkey
, ".push")) {
191 add_push_refspec(remote
, xstrdup(value
));
192 } else if (!strcmp(subkey
, ".fetch")) {
193 add_fetch_refspec(remote
, xstrdup(value
));
194 } else if (!strcmp(subkey
, ".receivepack")) {
195 if (!remote
->receivepack
)
196 remote
->receivepack
= xstrdup(value
);
198 error("more than one receivepack given, using the first");
203 static void read_config(void)
205 unsigned char sha1
[20];
206 const char *head_ref
;
208 if (default_remote_name
) // did this already
210 default_remote_name
= xstrdup("origin");
211 current_branch
= NULL
;
212 head_ref
= resolve_ref("HEAD", sha1
, 0, &flag
);
213 if (head_ref
&& (flag
& REF_ISSYMREF
) &&
214 !prefixcmp(head_ref
, "refs/heads/")) {
215 current_branch
= head_ref
+ strlen("refs/heads/");
216 current_branch_len
= strlen(current_branch
);
218 git_config(handle_config
);
221 static struct refspec
*parse_ref_spec(int nr_refspec
, const char **refspec
)
224 struct refspec
*rs
= xcalloc(sizeof(*rs
), nr_refspec
);
225 for (i
= 0; i
< nr_refspec
; i
++) {
226 const char *sp
, *ep
, *gp
;
232 gp
= strchr(sp
, '*');
233 ep
= strchr(sp
, ':');
234 if (gp
&& ep
&& gp
> ep
)
238 const char *glob
= strchr(ep
+ 1, '*');
242 rs
[i
].dst
= xstrndup(ep
+ 1,
245 rs
[i
].dst
= xstrdup(ep
+ 1);
248 ep
= sp
+ strlen(sp
);
254 rs
[i
].src
= xstrndup(sp
, ep
- sp
);
259 struct remote
*remote_get(const char *name
)
265 name
= default_remote_name
;
266 ret
= make_remote(name
, 0);
267 if (name
[0] != '/') {
269 read_remotes_file(ret
);
271 read_branches_file(ret
);
277 ret
->fetch
= parse_ref_spec(ret
->fetch_refspec_nr
, ret
->fetch_refspec
);
278 ret
->push
= parse_ref_spec(ret
->push_refspec_nr
, ret
->push_refspec
);
282 int remote_has_uri(struct remote
*remote
, const char *uri
)
285 for (i
= 0; i
< remote
->uri_nr
; i
++) {
286 if (!strcmp(remote
->uri
[i
], uri
))
292 int remote_find_tracking(struct remote
*remote
, struct refspec
*refspec
)
295 for (i
= 0; i
< remote
->fetch_refspec_nr
; i
++) {
296 struct refspec
*fetch
= &remote
->fetch
[i
];
299 if (fetch
->pattern
) {
300 if (!prefixcmp(refspec
->src
, fetch
->src
)) {
302 xmalloc(strlen(fetch
->dst
) +
303 strlen(refspec
->src
) -
304 strlen(fetch
->src
) + 1);
305 strcpy(refspec
->dst
, fetch
->dst
);
306 strcpy(refspec
->dst
+ strlen(fetch
->dst
),
307 refspec
->src
+ strlen(fetch
->src
));
308 refspec
->force
= fetch
->force
;
312 if (!strcmp(refspec
->src
, fetch
->src
)) {
313 refspec
->dst
= xstrdup(fetch
->dst
);
314 refspec
->force
= fetch
->force
;
323 struct ref
*alloc_ref(unsigned namelen
)
325 struct ref
*ret
= xmalloc(sizeof(struct ref
) + namelen
);
326 memset(ret
, 0, sizeof(struct ref
) + namelen
);
330 void free_refs(struct ref
*ref
)
342 static int count_refspec_match(const char *pattern
,
344 struct ref
**matched_ref
)
346 int patlen
= strlen(pattern
);
347 struct ref
*matched_weak
= NULL
;
348 struct ref
*matched
= NULL
;
352 for (weak_match
= match
= 0; refs
; refs
= refs
->next
) {
353 char *name
= refs
->name
;
354 int namelen
= strlen(name
);
356 if (namelen
< patlen
||
357 memcmp(name
+ namelen
- patlen
, pattern
, patlen
))
359 if (namelen
!= patlen
&& name
[namelen
- patlen
- 1] != '/')
362 /* A match is "weak" if it is with refs outside
363 * heads or tags, and did not specify the pattern
364 * in full (e.g. "refs/remotes/origin/master") or at
365 * least from the toplevel (e.g. "remotes/origin/master");
366 * otherwise "git push $URL master" would result in
367 * ambiguity between remotes/origin/master and heads/master
368 * at the remote site.
370 if (namelen
!= patlen
&&
371 patlen
!= namelen
- 5 &&
372 prefixcmp(name
, "refs/heads/") &&
373 prefixcmp(name
, "refs/tags/")) {
374 /* We want to catch the case where only weak
375 * matches are found and there are multiple
376 * matches, and where more than one strong
377 * matches are found, as ambiguous. One
378 * strong match with zero or more weak matches
379 * are acceptable as a unique match.
390 *matched_ref
= matched_weak
;
394 *matched_ref
= matched
;
399 static void link_dst_tail(struct ref
*ref
, struct ref
***tail
)
406 static struct ref
*try_explicit_object_name(const char *name
)
408 unsigned char sha1
[20];
414 strcpy(ref
->name
, "(delete)");
415 hashclr(ref
->new_sha1
);
418 if (get_sha1(name
, sha1
))
420 len
= strlen(name
) + 1;
421 ref
= alloc_ref(len
);
422 memcpy(ref
->name
, name
, len
);
423 hashcpy(ref
->new_sha1
, sha1
);
427 static struct ref
*make_dst(const char *name
, struct ref
***dst_tail
)
432 len
= strlen(name
) + 1;
433 dst
= alloc_ref(len
);
434 memcpy(dst
->name
, name
, len
);
435 link_dst_tail(dst
, dst_tail
);
439 static int match_explicit(struct ref
*src
, struct ref
*dst
,
440 struct ref
***dst_tail
,
444 struct ref
*matched_src
, *matched_dst
;
446 const char *dst_value
= rs
->dst
;
451 matched_src
= matched_dst
= NULL
;
452 switch (count_refspec_match(rs
->src
, src
, &matched_src
)) {
456 /* The source could be in the get_sha1() format
457 * not a reference name. :refs/other is a
458 * way to delete 'other' ref at the remote end.
460 matched_src
= try_explicit_object_name(rs
->src
);
463 error("src refspec %s does not match any.",
468 error("src refspec %s matches more than one.",
476 if (dst_value
== NULL
)
477 dst_value
= matched_src
->name
;
479 switch (count_refspec_match(dst_value
, dst
, &matched_dst
)) {
483 if (!memcmp(dst_value
, "refs/", 5))
484 matched_dst
= make_dst(dst_value
, dst_tail
);
486 error("dst refspec %s does not match any "
487 "existing ref on the remote and does "
488 "not start with refs/.", dst_value
);
492 error("dst refspec %s matches more than one.",
496 if (errs
|| matched_dst
== NULL
)
498 if (matched_dst
->peer_ref
) {
500 error("dst ref %s receives from more than one src.",
504 matched_dst
->peer_ref
= matched_src
;
505 matched_dst
->force
= rs
->force
;
510 static int match_explicit_refs(struct ref
*src
, struct ref
*dst
,
511 struct ref
***dst_tail
, struct refspec
*rs
,
515 for (i
= errs
= 0; i
< rs_nr
; i
++)
516 errs
|= match_explicit(src
, dst
, dst_tail
, &rs
[i
], errs
);
520 static struct ref
*find_ref_by_name(struct ref
*list
, const char *name
)
522 for ( ; list
; list
= list
->next
)
523 if (!strcmp(list
->name
, name
))
528 static const struct refspec
*check_pattern_match(const struct refspec
*rs
,
530 const struct ref
*src
)
533 for (i
= 0; i
< rs_nr
; i
++) {
534 if (rs
[i
].pattern
&& !prefixcmp(src
->name
, rs
[i
].src
))
541 * Note. This is used only by "push"; refspec matching rules for
542 * push and fetch are subtly different, so do not try to reuse it
545 int match_refs(struct ref
*src
, struct ref
*dst
, struct ref
***dst_tail
,
546 int nr_refspec
, char **refspec
, int all
)
549 parse_ref_spec(nr_refspec
, (const char **) refspec
);
551 if (match_explicit_refs(src
, dst
, dst_tail
, rs
, nr_refspec
))
554 /* pick the remainder */
555 for ( ; src
; src
= src
->next
) {
556 struct ref
*dst_peer
;
557 const struct refspec
*pat
= NULL
;
562 pat
= check_pattern_match(rs
, nr_refspec
, src
);
566 else if (prefixcmp(src
->name
, "refs/heads/"))
568 * "matching refs"; traditionally we pushed everything
569 * including refs outside refs/heads/ hierarchy, but
570 * that does not make much sense these days.
575 const char *dst_side
= pat
->dst
? pat
->dst
: pat
->src
;
576 dst_name
= xmalloc(strlen(dst_side
) +
578 strlen(pat
->src
) + 2);
579 strcpy(dst_name
, dst_side
);
580 strcat(dst_name
, src
->name
+ strlen(pat
->src
));
582 dst_name
= xstrdup(src
->name
);
583 dst_peer
= find_ref_by_name(dst
, dst_name
);
584 if (dst_peer
&& dst_peer
->peer_ref
)
585 /* We're already sending something to this ref. */
587 if (!dst_peer
&& !nr_refspec
&& !all
)
588 /* Remote doesn't have it, and we have no
589 * explicit pattern, and we don't have
593 /* Create a new one and link it */
594 dst_peer
= make_dst(dst_name
, dst_tail
);
595 hashcpy(dst_peer
->new_sha1
, src
->new_sha1
);
597 dst_peer
->peer_ref
= src
;