Move refspec parser from connect.c and cache.h to remote.{c,h}
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Daniel Barkalow
committed by
Junio C Hamano
Junio C Hamano
parent
5751f49010
commit
6b62816cb1
2
cache.h
2
cache.h
@ -467,8 +467,6 @@ struct ref {
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extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags);
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extern pid_t git_connect(int fd[2], char *url, const char *prog, int flags);
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extern int finish_connect(pid_t pid);
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extern int finish_connect(pid_t pid);
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extern int path_match(const char *path, int nr, char **match);
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extern int path_match(const char *path, int nr, char **match);
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extern int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
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int nr_refspec, char **refspec, int all);
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extern int get_ack(int fd, unsigned char *result_sha1);
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extern int get_ack(int fd, unsigned char *result_sha1);
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extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
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extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags);
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extern int server_supports(const char *feature);
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extern int server_supports(const char *feature);
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240
connect.c
240
connect.c
@ -4,6 +4,7 @@
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#include "quote.h"
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#include "quote.h"
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#include "refs.h"
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#include "refs.h"
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#include "run-command.h"
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#include "run-command.h"
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#include "remote.h"
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static char *server_capabilities;
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static char *server_capabilities;
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@ -128,245 +129,6 @@ int path_match(const char *path, int nr, char **match)
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return 0;
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return 0;
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}
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}
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struct refspec {
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char *src;
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char *dst;
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char force;
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};
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/*
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* A:B means fast forward remote B with local A.
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* +A:B means overwrite remote B with local A.
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* +A is a shorthand for +A:A.
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* A is a shorthand for A:A.
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* :B means delete remote B.
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*/
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static struct refspec *parse_ref_spec(int nr_refspec, char **refspec)
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{
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int i;
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struct refspec *rs = xcalloc(sizeof(*rs), (nr_refspec + 1));
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for (i = 0; i < nr_refspec; i++) {
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char *sp, *dp, *ep;
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sp = refspec[i];
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if (*sp == '+') {
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rs[i].force = 1;
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sp++;
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}
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ep = strchr(sp, ':');
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if (ep) {
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dp = ep + 1;
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*ep = 0;
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}
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else
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dp = sp;
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rs[i].src = sp;
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rs[i].dst = dp;
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}
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rs[nr_refspec].src = rs[nr_refspec].dst = NULL;
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return rs;
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}
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static int count_refspec_match(const char *pattern,
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struct ref *refs,
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struct ref **matched_ref)
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{
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int patlen = strlen(pattern);
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struct ref *matched_weak = NULL;
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struct ref *matched = NULL;
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int weak_match = 0;
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int match = 0;
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for (weak_match = match = 0; refs; refs = refs->next) {
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char *name = refs->name;
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int namelen = strlen(name);
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int weak_match;
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if (namelen < patlen ||
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memcmp(name + namelen - patlen, pattern, patlen))
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continue;
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if (namelen != patlen && name[namelen - patlen - 1] != '/')
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continue;
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/* A match is "weak" if it is with refs outside
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* heads or tags, and did not specify the pattern
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* in full (e.g. "refs/remotes/origin/master") or at
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* least from the toplevel (e.g. "remotes/origin/master");
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* otherwise "git push $URL master" would result in
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* ambiguity between remotes/origin/master and heads/master
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* at the remote site.
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*/
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if (namelen != patlen &&
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patlen != namelen - 5 &&
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prefixcmp(name, "refs/heads/") &&
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prefixcmp(name, "refs/tags/")) {
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/* We want to catch the case where only weak
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* matches are found and there are multiple
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* matches, and where more than one strong
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* matches are found, as ambiguous. One
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* strong match with zero or more weak matches
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* are acceptable as a unique match.
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*/
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matched_weak = refs;
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weak_match++;
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}
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else {
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matched = refs;
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match++;
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}
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}
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if (!matched) {
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*matched_ref = matched_weak;
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return weak_match;
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}
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else {
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*matched_ref = matched;
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return match;
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}
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}
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static void link_dst_tail(struct ref *ref, struct ref ***tail)
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{
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**tail = ref;
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*tail = &ref->next;
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**tail = NULL;
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}
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static struct ref *try_explicit_object_name(const char *name)
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{
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unsigned char sha1[20];
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struct ref *ref;
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int len;
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if (!*name) {
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ref = xcalloc(1, sizeof(*ref) + 20);
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strcpy(ref->name, "(delete)");
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hashclr(ref->new_sha1);
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return ref;
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}
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if (get_sha1(name, sha1))
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return NULL;
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len = strlen(name) + 1;
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ref = xcalloc(1, sizeof(*ref) + len);
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memcpy(ref->name, name, len);
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hashcpy(ref->new_sha1, sha1);
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return ref;
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}
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static int match_explicit_refs(struct ref *src, struct ref *dst,
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struct ref ***dst_tail, struct refspec *rs)
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{
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int i, errs;
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for (i = errs = 0; rs[i].src; i++) {
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struct ref *matched_src, *matched_dst;
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matched_src = matched_dst = NULL;
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switch (count_refspec_match(rs[i].src, src, &matched_src)) {
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case 1:
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break;
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case 0:
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/* The source could be in the get_sha1() format
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* not a reference name. :refs/other is a
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* way to delete 'other' ref at the remote end.
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*/
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matched_src = try_explicit_object_name(rs[i].src);
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if (matched_src)
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break;
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errs = 1;
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error("src refspec %s does not match any.",
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rs[i].src);
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break;
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default:
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errs = 1;
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error("src refspec %s matches more than one.",
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rs[i].src);
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break;
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}
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switch (count_refspec_match(rs[i].dst, dst, &matched_dst)) {
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case 1:
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break;
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case 0:
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if (!memcmp(rs[i].dst, "refs/", 5)) {
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int len = strlen(rs[i].dst) + 1;
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matched_dst = xcalloc(1, sizeof(*dst) + len);
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memcpy(matched_dst->name, rs[i].dst, len);
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link_dst_tail(matched_dst, dst_tail);
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}
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else if (!strcmp(rs[i].src, rs[i].dst) &&
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matched_src) {
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/* pushing "master:master" when
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* remote does not have master yet.
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*/
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int len = strlen(matched_src->name) + 1;
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matched_dst = xcalloc(1, sizeof(*dst) + len);
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memcpy(matched_dst->name, matched_src->name,
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len);
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link_dst_tail(matched_dst, dst_tail);
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}
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else {
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errs = 1;
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error("dst refspec %s does not match any "
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"existing ref on the remote and does "
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"not start with refs/.", rs[i].dst);
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}
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break;
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default:
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errs = 1;
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error("dst refspec %s matches more than one.",
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rs[i].dst);
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break;
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}
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if (errs)
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continue;
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if (matched_dst->peer_ref) {
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errs = 1;
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error("dst ref %s receives from more than one src.",
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matched_dst->name);
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}
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else {
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matched_dst->peer_ref = matched_src;
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matched_dst->force = rs[i].force;
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}
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}
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return -errs;
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}
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static struct ref *find_ref_by_name(struct ref *list, const char *name)
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{
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for ( ; list; list = list->next)
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if (!strcmp(list->name, name))
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return list;
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return NULL;
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}
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int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
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int nr_refspec, char **refspec, int all)
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{
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struct refspec *rs = parse_ref_spec(nr_refspec, refspec);
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if (nr_refspec)
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return match_explicit_refs(src, dst, dst_tail, rs);
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/* pick the remainder */
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for ( ; src; src = src->next) {
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struct ref *dst_peer;
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if (src->peer_ref)
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continue;
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dst_peer = find_ref_by_name(dst, src->name);
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if ((dst_peer && dst_peer->peer_ref) || (!dst_peer && !all))
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continue;
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if (!dst_peer) {
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/* Create a new one and link it */
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int len = strlen(src->name) + 1;
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dst_peer = xcalloc(1, sizeof(*dst_peer) + len);
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memcpy(dst_peer->name, src->name, len);
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hashcpy(dst_peer->new_sha1, src->new_sha1);
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link_dst_tail(dst_peer, dst_tail);
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}
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dst_peer->peer_ref = src;
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}
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return 0;
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}
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enum protocol {
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enum protocol {
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PROTO_LOCAL = 1,
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PROTO_LOCAL = 1,
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PROTO_SSH,
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PROTO_SSH,
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@ -9,6 +9,7 @@
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#include "diff.h"
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#include "diff.h"
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#include "revision.h"
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#include "revision.h"
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#include "exec_cmd.h"
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#include "exec_cmd.h"
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#include "remote.h"
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#include <expat.h>
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#include <expat.h>
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246
remote.c
246
remote.c
@ -201,6 +201,44 @@ static void read_config(void)
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git_config(handle_config);
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git_config(handle_config);
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}
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}
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static struct refspec *parse_ref_spec(int nr_refspec, const char **refspec)
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{
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int i;
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struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
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for (i = 0; i < nr_refspec; i++) {
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const char *sp, *ep, *gp;
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sp = refspec[i];
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if (*sp == '+') {
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rs[i].force = 1;
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sp++;
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}
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gp = strchr(sp, '*');
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ep = strchr(sp, ':');
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if (gp && ep && gp > ep)
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gp = NULL;
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if (ep) {
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if (ep[1]) {
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const char *glob = strchr(ep + 1, '*');
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if (!glob)
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gp = NULL;
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if (gp)
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rs[i].dst = xstrndup(ep + 1,
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glob - ep - 1);
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else
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rs[i].dst = xstrdup(ep + 1);
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}
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} else {
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ep = sp + strlen(sp);
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}
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if (gp) {
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rs[i].pattern = 1;
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ep = gp;
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}
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rs[i].src = xstrndup(sp, ep - sp);
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}
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return rs;
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}
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struct remote *remote_get(const char *name)
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struct remote *remote_get(const char *name)
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{
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{
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struct remote *ret;
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struct remote *ret;
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@ -219,5 +257,213 @@ struct remote *remote_get(const char *name)
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add_uri(ret, name);
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add_uri(ret, name);
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if (!ret->uri)
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if (!ret->uri)
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return NULL;
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return NULL;
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ret->push = parse_ref_spec(ret->push_refspec_nr, ret->push_refspec);
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return ret;
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return ret;
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}
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}
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static int count_refspec_match(const char *pattern,
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struct ref *refs,
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struct ref **matched_ref)
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{
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int patlen = strlen(pattern);
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struct ref *matched_weak = NULL;
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struct ref *matched = NULL;
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int weak_match = 0;
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int match = 0;
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for (weak_match = match = 0; refs; refs = refs->next) {
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char *name = refs->name;
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int namelen = strlen(name);
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int weak_match;
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if (namelen < patlen ||
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memcmp(name + namelen - patlen, pattern, patlen))
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continue;
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if (namelen != patlen && name[namelen - patlen - 1] != '/')
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continue;
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/* A match is "weak" if it is with refs outside
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* heads or tags, and did not specify the pattern
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* in full (e.g. "refs/remotes/origin/master") or at
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* least from the toplevel (e.g. "remotes/origin/master");
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* otherwise "git push $URL master" would result in
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* ambiguity between remotes/origin/master and heads/master
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* at the remote site.
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*/
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if (namelen != patlen &&
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patlen != namelen - 5 &&
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prefixcmp(name, "refs/heads/") &&
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prefixcmp(name, "refs/tags/")) {
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/* We want to catch the case where only weak
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* matches are found and there are multiple
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* matches, and where more than one strong
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|
* matches are found, as ambiguous. One
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* strong match with zero or more weak matches
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* are acceptable as a unique match.
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*/
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matched_weak = refs;
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weak_match++;
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}
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else {
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matched = refs;
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match++;
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}
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}
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if (!matched) {
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*matched_ref = matched_weak;
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return weak_match;
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}
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else {
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*matched_ref = matched;
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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 rs_nr)
|
||||||
|
{
|
||||||
|
int i, errs;
|
||||||
|
for (i = errs = 0; i < rs_nr; i++) {
|
||||||
|
struct ref *matched_src, *matched_dst;
|
||||||
|
|
||||||
|
const char *dst_value = rs[i].dst;
|
||||||
|
if (dst_value == NULL)
|
||||||
|
dst_value = rs[i].src;
|
||||||
|
|
||||||
|
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(dst_value, dst, &matched_dst)) {
|
||||||
|
case 1:
|
||||||
|
break;
|
||||||
|
case 0:
|
||||||
|
if (!memcmp(dst_value, "refs/", 5)) {
|
||||||
|
int len = strlen(dst_value) + 1;
|
||||||
|
matched_dst = xcalloc(1, sizeof(*dst) + len);
|
||||||
|
memcpy(matched_dst->name, dst_value, len);
|
||||||
|
link_dst_tail(matched_dst, dst_tail);
|
||||||
|
}
|
||||||
|
else if (!strcmp(rs[i].src, dst_value) &&
|
||||||
|
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/.", dst_value);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
errs = 1;
|
||||||
|
error("dst refspec %s matches more than one.",
|
||||||
|
dst_value);
|
||||||
|
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, (const char **) refspec);
|
||||||
|
|
||||||
|
if (nr_refspec)
|
||||||
|
return match_explicit_refs(src, dst, dst_tail, rs, nr_refspec);
|
||||||
|
|
||||||
|
/* 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;
|
||||||
|
}
|
||||||
|
|||||||
12
remote.h
12
remote.h
@ -8,6 +8,7 @@ struct remote {
|
|||||||
int uri_nr;
|
int uri_nr;
|
||||||
|
|
||||||
const char **push_refspec;
|
const char **push_refspec;
|
||||||
|
struct refspec *push;
|
||||||
int push_refspec_nr;
|
int push_refspec_nr;
|
||||||
|
|
||||||
const char *receivepack;
|
const char *receivepack;
|
||||||
@ -15,4 +16,15 @@ struct remote {
|
|||||||
|
|
||||||
struct remote *remote_get(const char *name);
|
struct remote *remote_get(const char *name);
|
||||||
|
|
||||||
|
struct refspec {
|
||||||
|
unsigned force : 1;
|
||||||
|
unsigned pattern : 1;
|
||||||
|
|
||||||
|
const char *src;
|
||||||
|
char *dst;
|
||||||
|
};
|
||||||
|
|
||||||
|
int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
|
||||||
|
int nr_refspec, char **refspec, int all);
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
@ -4,6 +4,7 @@
|
|||||||
#include "refs.h"
|
#include "refs.h"
|
||||||
#include "pkt-line.h"
|
#include "pkt-line.h"
|
||||||
#include "run-command.h"
|
#include "run-command.h"
|
||||||
|
#include "remote.h"
|
||||||
|
|
||||||
static const char send_pack_usage[] =
|
static const char send_pack_usage[] =
|
||||||
"git-send-pack [--all] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
|
"git-send-pack [--all] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
|
||||||
|
|||||||
Reference in New Issue
Block a user