git-daemon: produce output when ready
[gitweb.git] / remote.c
index ca42a126ad04514f0ed8378768ebce98cfc5a659..73a3809300c9e4589b71c486a531debfdc2cf056 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -482,7 +482,7 @@ static void read_config(void)
                return;
        default_remote_name = xstrdup("origin");
        current_branch = NULL;
-       head_ref = resolve_ref("HEAD", sha1, 0, &flag);
+       head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag);
        if (head_ref && (flag & REF_ISSYMREF) &&
            !prefixcmp(head_ref, "refs/heads/")) {
                current_branch =
@@ -492,23 +492,6 @@ static void read_config(void)
        alias_all_urls();
 }
 
-/*
- * We need to make sure the remote-tracking branches are well formed, but a
- * wildcard refspec in "struct refspec" must have a trailing slash. We
- * temporarily drop the trailing '/' while calling check_ref_format(),
- * and put it back.  The caller knows that a CHECK_REF_FORMAT_ONELEVEL
- * error return is Ok for a wildcard refspec.
- */
-static int verify_refname(char *name, int is_glob)
-{
-       int result;
-
-       result = check_ref_format(name);
-       if (is_glob && result == CHECK_REF_FORMAT_WILDCARD)
-               result = CHECK_REF_FORMAT_OK;
-       return result;
-}
-
 /*
  * This function frees a refspec array.
  * Warning: code paths should be checked to ensure that the src
@@ -532,13 +515,13 @@ static void free_refspecs(struct refspec *refspec, int nr_refspec)
 static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
 {
        int i;
-       int st;
        struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
 
        for (i = 0; i < nr_refspec; i++) {
                size_t llen;
                int is_glob;
                const char *lhs, *rhs;
+               int flags;
 
                is_glob = 0;
 
@@ -576,6 +559,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
 
                rs[i].pattern = is_glob;
                rs[i].src = xstrndup(lhs, llen);
+               flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
 
                if (fetch) {
                        /*
@@ -585,26 +569,20 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
                         */
                        if (!*rs[i].src)
                                ; /* empty is ok */
-                       else {
-                               st = verify_refname(rs[i].src, is_glob);
-                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
-                                       goto invalid;
-                       }
+                       else if (check_refname_format(rs[i].src, flags))
+                               goto invalid;
                        /*
                         * RHS
                         * - missing is ok, and is same as empty.
                         * - empty is ok; it means not to store.
                         * - otherwise it must be a valid looking ref.
                         */
-                       if (!rs[i].dst) {
+                       if (!rs[i].dst)
                                ; /* ok */
-                       } else if (!*rs[i].dst) {
+                       else if (!*rs[i].dst)
                                ; /* ok */
-                       } else {
-                               st = verify_refname(rs[i].dst, is_glob);
-                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
-                                       goto invalid;
-                       }
+                       else if (check_refname_format(rs[i].dst, flags))
+                               goto invalid;
                } else {
                        /*
                         * LHS
@@ -616,8 +594,7 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
                        if (!*rs[i].src)
                                ; /* empty is ok */
                        else if (is_glob) {
-                               st = verify_refname(rs[i].src, is_glob);
-                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                               if (check_refname_format(rs[i].src, flags))
                                        goto invalid;
                        }
                        else
@@ -630,14 +607,12 @@ static struct refspec *parse_refspec_internal(int nr_refspec, const char **refsp
                         * - otherwise it must be a valid looking ref.
                         */
                        if (!rs[i].dst) {
-                               st = verify_refname(rs[i].src, is_glob);
-                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                               if (check_refname_format(rs[i].src, flags))
                                        goto invalid;
                        } else if (!*rs[i].dst) {
                                goto invalid;
                        } else {
-                               st = verify_refname(rs[i].dst, is_glob);
-                               if (st && st != CHECK_REF_FORMAT_ONELEVEL)
+                               if (check_refname_format(rs[i].dst, flags))
                                        goto invalid;
                        }
                }
@@ -828,59 +803,56 @@ static int match_name_with_pattern(const char *key, const char *name,
        return ret;
 }
 
-char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
-                    const char *name)
+static int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
 {
        int i;
-       char *ret = NULL;
-       for (i = 0; i < nr_refspec; i++) {
-               struct refspec *refspec = refspecs + i;
-               if (refspec->pattern) {
-                       if (match_name_with_pattern(refspec->src, name,
-                                                   refspec->dst, &ret))
-                               return ret;
-               } else if (!strcmp(refspec->src, name))
-                       return strdup(refspec->dst);
-       }
-       return NULL;
-}
+       int find_src = !query->src;
 
-int remote_find_tracking(struct remote *remote, struct refspec *refspec)
-{
-       int find_src = refspec->src == NULL;
-       char *needle, **result;
-       int i;
+       if (find_src && !query->dst)
+               return error("query_refspecs: need either src or dst");
 
-       if (find_src) {
-               if (!refspec->dst)
-                       return error("find_tracking: need either src or dst");
-               needle = refspec->dst;
-               result = &refspec->src;
-       } else {
-               needle = refspec->src;
-               result = &refspec->dst;
-       }
+       for (i = 0; i < ref_count; i++) {
+               struct refspec *refspec = &refs[i];
+               const char *key = find_src ? refspec->dst : refspec->src;
+               const char *value = find_src ? refspec->src : refspec->dst;
+               const char *needle = find_src ? query->dst : query->src;
+               char **result = find_src ? &query->src : &query->dst;
 
-       for (i = 0; i < remote->fetch_refspec_nr; i++) {
-               struct refspec *fetch = &remote->fetch[i];
-               const char *key = find_src ? fetch->dst : fetch->src;
-               const char *value = find_src ? fetch->src : fetch->dst;
-               if (!fetch->dst)
+               if (!refspec->dst)
                        continue;
-               if (fetch->pattern) {
+               if (refspec->pattern) {
                        if (match_name_with_pattern(key, needle, value, result)) {
-                               refspec->force = fetch->force;
+                               query->force = refspec->force;
                                return 0;
                        }
                } else if (!strcmp(needle, key)) {
                        *result = xstrdup(value);
-                       refspec->force = fetch->force;
+                       query->force = refspec->force;
                        return 0;
                }
        }
        return -1;
 }
 
+char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
+                    const char *name)
+{
+       struct refspec query;
+
+       memset(&query, 0, sizeof(struct refspec));
+       query.src = (char *)name;
+
+       if (query_refspecs(refspecs, nr_refspec, &query))
+               return NULL;
+
+       return query.dst;
+}
+
+int remote_find_tracking(struct remote *remote, struct refspec *refspec)
+{
+       return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
+}
+
 static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
                const char *name)
 {
@@ -896,7 +868,7 @@ struct ref *alloc_ref(const char *name)
        return alloc_ref_with_prefix("", 0, name);
 }
 
-static struct ref *copy_ref(const struct ref *ref)
+struct ref *copy_ref(const struct ref *ref)
 {
        struct ref *cpy;
        size_t len;
@@ -1035,7 +1007,7 @@ static char *guess_ref(const char *name, struct ref *peer)
        struct strbuf buf = STRBUF_INIT;
        unsigned char sha1[20];
 
-       const char *r = resolve_ref(peer->name, sha1, 1, NULL);
+       const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL);
        if (!r)
                return NULL;
 
@@ -1086,7 +1058,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
                unsigned char sha1[20];
                int flag;
 
-               dst_value = resolve_ref(matched_src->name, sha1, 1, &flag);
+               dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag);
                if (!dst_value ||
                    ((flag & REF_ISSYMREF) &&
                     prefixcmp(dst_value, "refs/heads/")))
@@ -1170,12 +1142,15 @@ static struct ref **tail_ref(struct ref **head)
 }
 
 /*
- * Note. This is used only by "push"; refspec matching rules for
- * push and fetch are subtly different, so do not try to reuse it
- * without thinking.
+ * Given the set of refs the local repository has, the set of refs the
+ * remote repository has, and the refspec used for push, determine
+ * what remote refs we will update and with what value by setting
+ * peer_ref (which object is being pushed) and force (if the push is
+ * forced) in elements of "dst". The function may add new elements to
+ * dst (e.g. pushing to a new branch, done in match_explicit_refs).
  */
-int match_refs(struct ref *src, struct ref **dst,
-              int nr_refspec, const char **refspec, int flags)
+int match_push_refs(struct ref *src, struct ref **dst,
+                   int nr_refspec, const char **refspec, int flags)
 {
        struct refspec *rs;
        int send_all = flags & MATCH_REFS_ALL;
@@ -1427,8 +1402,8 @@ int get_fetch_map(const struct ref *remote_refs,
 
        for (rmp = &ref_map; *rmp; ) {
                if ((*rmp)->peer_ref) {
-                       int st = check_ref_format((*rmp)->peer_ref->name + 5);
-                       if (st && st != CHECK_REF_FORMAT_ONELEVEL) {
+                       if (check_refname_format((*rmp)->peer_ref->name + 5,
+                               REFNAME_ALLOW_ONELEVEL)) {
                                struct ref *ignore = *rmp;
                                error("* Ignoring funny ref '%s' locally",
                                      (*rmp)->peer_ref->name);
@@ -1532,13 +1507,13 @@ int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
         * nothing to report.
         */
        base = branch->merge[0]->dst;
-       if (!resolve_ref(base, sha1, 1, NULL))
+       if (read_ref(base, sha1))
                return 0;
        theirs = lookup_commit_reference(sha1);
        if (!theirs)
                return 0;
 
-       if (!resolve_ref(branch->refname, sha1, 1, NULL))
+       if (read_ref(branch->refname, sha1))
                return 0;
        ours = lookup_commit_reference(sha1);
        if (!ours)
@@ -1620,7 +1595,7 @@ static int one_local_ref(const char *refname, const unsigned char *sha1, int fla
        int len;
 
        /* we already know it starts with refs/ to get here */
-       if (check_ref_format(refname + 5))
+       if (check_refname_format(refname + 5, 0))
                return 0;
 
        len = strlen(refname) + 1;
@@ -1667,7 +1642,9 @@ struct ref *guess_remote_head(const struct ref *head,
 
        /* Look for another ref that points there */
        for (r = refs; r; r = r->next) {
-               if (r != head && !hashcmp(r->old_sha1, head->old_sha1)) {
+               if (r != head &&
+                   !prefixcmp(r->name, "refs/heads/") &&
+                   !hashcmp(r->old_sha1, head->old_sha1)) {
                        *tail = copy_ref(r);
                        tail = &((*tail)->next);
                        if (!all)
@@ -1679,36 +1656,47 @@ struct ref *guess_remote_head(const struct ref *head,
 }
 
 struct stale_heads_info {
-       struct remote *remote;
        struct string_list *ref_names;
        struct ref **stale_refs_tail;
+       struct refspec *refs;
+       int ref_count;
 };
 
 static int get_stale_heads_cb(const char *refname,
        const unsigned char *sha1, int flags, void *cb_data)
 {
        struct stale_heads_info *info = cb_data;
-       struct refspec refspec;
-       memset(&refspec, 0, sizeof(refspec));
-       refspec.dst = (char *)refname;
-       if (!remote_find_tracking(info->remote, &refspec)) {
-               if (!((flags & REF_ISSYMREF) ||
-                   string_list_has_string(info->ref_names, refspec.src))) {
-                       struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
-                       hashcpy(ref->new_sha1, sha1);
-               }
+       struct refspec query;
+       memset(&query, 0, sizeof(struct refspec));
+       query.dst = (char *)refname;
+
+       if (query_refspecs(info->refs, info->ref_count, &query))
+               return 0; /* No matches */
+
+       /*
+        * If we did find a suitable refspec and it's not a symref and
+        * it's not in the list of refs that currently exist in that
+        * remote we consider it to be stale.
+        */
+       if (!((flags & REF_ISSYMREF) ||
+             string_list_has_string(info->ref_names, query.src))) {
+               struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
+               hashcpy(ref->new_sha1, sha1);
        }
+
+       free(query.src);
        return 0;
 }
 
-struct ref *get_stale_heads(struct remote *remote, struct ref *fetch_map)
+struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
 {
        struct ref *ref, *stale_refs = NULL;
        struct string_list ref_names = STRING_LIST_INIT_NODUP;
        struct stale_heads_info info;
-       info.remote = remote;
        info.ref_names = &ref_names;
        info.stale_refs_tail = &stale_refs;
+       info.refs = refs;
+       info.ref_count = ref_count;
        for (ref = fetch_map; ref; ref = ref->next)
                string_list_append(&ref_names, ref->name);
        sort_string_list(&ref_names);