diff options
Diffstat (limited to 'connect.c')
| -rw-r--r-- | connect.c | 240 |
1 files changed, 1 insertions, 239 deletions
@@ -4,6 +4,7 @@ #include "quote.h" #include "refs.h" #include "run-command.h" +#include "remote.h" static char *server_capabilities; @@ -128,245 +129,6 @@ int path_match(const char *path, int nr, char **match) return 0; } -struct refspec { - char *src; - char *dst; - char force; -}; - -/* - * A:B means fast forward remote B with local A. - * +A:B means overwrite remote B with local A. - * +A is a shorthand for +A:A. - * A is a shorthand for A:A. - * :B means delete remote B. - */ -static struct refspec *parse_ref_spec(int nr_refspec, char **refspec) -{ - int i; - struct refspec *rs = xcalloc(sizeof(*rs), (nr_refspec + 1)); - for (i = 0; i < nr_refspec; i++) { - char *sp, *dp, *ep; - sp = refspec[i]; - if (*sp == '+') { - rs[i].force = 1; - sp++; - } - ep = strchr(sp, ':'); - if (ep) { - dp = ep + 1; - *ep = 0; - } - else - dp = sp; - rs[i].src = sp; - rs[i].dst = dp; - } - rs[nr_refspec].src = rs[nr_refspec].dst = NULL; - return rs; -} - -static int count_refspec_match(const char *pattern, - struct ref *refs, - struct ref **matched_ref) -{ - int patlen = strlen(pattern); - struct ref *matched_weak = NULL; - struct ref *matched = NULL; - int weak_match = 0; - int match = 0; - - for (weak_match = match = 0; refs; refs = refs->next) { - char *name = refs->name; - int namelen = strlen(name); - int weak_match; - - if (namelen < patlen || - memcmp(name + namelen - patlen, pattern, patlen)) - continue; - if (namelen != patlen && name[namelen - patlen - 1] != '/') - continue; - - /* A match is "weak" if it is with refs outside - * heads or tags, and did not specify the pattern - * in full (e.g. "refs/remotes/origin/master") or at - * least from the toplevel (e.g. "remotes/origin/master"); - * otherwise "git push $URL master" would result in - * ambiguity between remotes/origin/master and heads/master - * at the remote site. - */ - if (namelen != patlen && - patlen != namelen - 5 && - prefixcmp(name, "refs/heads/") && - prefixcmp(name, "refs/tags/")) { - /* We want to catch the case where only weak - * matches are found and there are multiple - * matches, and where more than one strong - * matches are found, as ambiguous. One - * strong match with zero or more weak matches - * are acceptable as a unique match. - */ - matched_weak = refs; - weak_match++; - } - else { - matched = refs; - match++; - } - } - if (!matched) { - *matched_ref = matched_weak; - return weak_match; - } - else { - *matched_ref = matched; - return match; - } -} - -static void link_dst_tail(struct ref *ref, struct ref ***tail) -{ - **tail = ref; - *tail = &ref->next; - **tail = NULL; -} - -static struct ref *try_explicit_object_name(const char *name) -{ - unsigned char sha1[20]; - struct ref *ref; - int len; - - if (!*name) { - ref = xcalloc(1, sizeof(*ref) + 20); - strcpy(ref->name, "(delete)"); - hashclr(ref->new_sha1); - return ref; - } - if (get_sha1(name, sha1)) - return NULL; - len = strlen(name) + 1; - ref = xcalloc(1, sizeof(*ref) + len); - memcpy(ref->name, name, len); - hashcpy(ref->new_sha1, sha1); - return ref; -} - -static int match_explicit_refs(struct ref *src, struct ref *dst, - struct ref ***dst_tail, struct refspec *rs) -{ - int i, errs; - for (i = errs = 0; rs[i].src; i++) { - struct ref *matched_src, *matched_dst; - - matched_src = matched_dst = NULL; - switch (count_refspec_match(rs[i].src, src, &matched_src)) { - case 1: - break; - case 0: - /* The source could be in the get_sha1() format - * not a reference name. :refs/other is a - * way to delete 'other' ref at the remote end. - */ - matched_src = try_explicit_object_name(rs[i].src); - if (matched_src) - break; - errs = 1; - error("src refspec %s does not match any.", - rs[i].src); - break; - default: - errs = 1; - error("src refspec %s matches more than one.", - rs[i].src); - break; - } - switch (count_refspec_match(rs[i].dst, dst, &matched_dst)) { - case 1: - break; - case 0: - if (!memcmp(rs[i].dst, "refs/", 5)) { - int len = strlen(rs[i].dst) + 1; - matched_dst = xcalloc(1, sizeof(*dst) + len); - memcpy(matched_dst->name, rs[i].dst, len); - link_dst_tail(matched_dst, dst_tail); - } - else if (!strcmp(rs[i].src, rs[i].dst) && - matched_src) { - /* pushing "master:master" when - * remote does not have master yet. - */ - int len = strlen(matched_src->name) + 1; - matched_dst = xcalloc(1, sizeof(*dst) + len); - memcpy(matched_dst->name, matched_src->name, - len); - link_dst_tail(matched_dst, dst_tail); - } - else { - errs = 1; - error("dst refspec %s does not match any " - "existing ref on the remote and does " - "not start with refs/.", rs[i].dst); - } - break; - default: - errs = 1; - error("dst refspec %s matches more than one.", - rs[i].dst); - break; - } - if (errs) - continue; - if (matched_dst->peer_ref) { - errs = 1; - error("dst ref %s receives from more than one src.", - matched_dst->name); - } - else { - matched_dst->peer_ref = matched_src; - matched_dst->force = rs[i].force; - } - } - return -errs; -} - -static struct ref *find_ref_by_name(struct ref *list, const char *name) -{ - for ( ; list; list = list->next) - if (!strcmp(list->name, name)) - return list; - return NULL; -} - -int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail, - int nr_refspec, char **refspec, int all) -{ - struct refspec *rs = parse_ref_spec(nr_refspec, refspec); - - if (nr_refspec) - return match_explicit_refs(src, dst, dst_tail, rs); - - /* pick the remainder */ - for ( ; src; src = src->next) { - struct ref *dst_peer; - if (src->peer_ref) - continue; - dst_peer = find_ref_by_name(dst, src->name); - if ((dst_peer && dst_peer->peer_ref) || (!dst_peer && !all)) - continue; - if (!dst_peer) { - /* Create a new one and link it */ - int len = strlen(src->name) + 1; - dst_peer = xcalloc(1, sizeof(*dst_peer) + len); - memcpy(dst_peer->name, src->name, len); - hashcpy(dst_peer->new_sha1, src->new_sha1); - link_dst_tail(dst_peer, dst_tail); - } - dst_peer->peer_ref = src; - } - return 0; -} - enum protocol { PROTO_LOCAL = 1, PROTO_SSH, |