gc docs: note how --aggressive impacts --window & --depth
[gitweb.git] / remote.c
index 11b33d16259ccde4eb4b7af527296dc63f1361b9..9cc3b07d214a63271849243c5f823b8f87ad631b 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -13,6 +13,7 @@
 #include "mergesort.h"
 #include "argv-array.h"
 #include "commit-reach.h"
+#include "advice.h"
 
 enum map_direction { FROM_SRC, FROM_DST };
 
@@ -336,14 +337,14 @@ static int handle_config(const char *key, const char *value, void *cb)
                if (!name)
                        return 0;
                if (!strcmp(subkey, "insteadof")) {
-                       rewrite = make_rewrite(&rewrites, name, namelen);
                        if (!value)
                                return config_error_nonbool(key);
+                       rewrite = make_rewrite(&rewrites, name, namelen);
                        add_instead_of(rewrite, xstrdup(value));
                } else if (!strcmp(subkey, "pushinsteadof")) {
-                       rewrite = make_rewrite(&rewrites_push, name, namelen);
                        if (!value)
                                return config_error_nonbool(key);
+                       rewrite = make_rewrite(&rewrites_push, name, namelen);
                        add_instead_of(rewrite, xstrdup(value));
                }
        }
@@ -968,12 +969,13 @@ static char *guess_ref(const char *name, struct ref *peer)
        if (!r)
                return NULL;
 
-       if (starts_with(r, "refs/heads/"))
+       if (starts_with(r, "refs/heads/")) {
                strbuf_addstr(&buf, "refs/heads/");
-       else if (starts_with(r, "refs/tags/"))
+       } else if (starts_with(r, "refs/tags/")) {
                strbuf_addstr(&buf, "refs/tags/");
-       else
+       } else {
                return NULL;
+       }
 
        strbuf_addstr(&buf, name);
        return strbuf_detach(&buf, NULL);
@@ -1004,6 +1006,62 @@ static int match_explicit_lhs(struct ref *src,
        }
 }
 
+static void show_push_unqualified_ref_name_error(const char *dst_value,
+                                                const char *matched_src_name)
+{
+       struct object_id oid;
+       enum object_type type;
+
+       /*
+        * TRANSLATORS: "matches '%s'%" is the <dst> part of "git push
+        * <remote> <src>:<dst>" push, and "being pushed ('%s')" is
+        * the <src>.
+        */
+       error(_("The destination you provided is not a full refname (i.e.,\n"
+               "starting with \"refs/\"). We tried to guess what you meant by:\n"
+               "\n"
+               "- Looking for a ref that matches '%s' on the remote side.\n"
+               "- Checking if the <src> being pushed ('%s')\n"
+               "  is a ref in \"refs/{heads,tags}/\". If so we add a corresponding\n"
+               "  refs/{heads,tags}/ prefix on the remote side.\n"
+               "\n"
+               "Neither worked, so we gave up. You must fully qualify the ref."),
+             dst_value, matched_src_name);
+
+       if (!advice_push_unqualified_ref_name)
+               return;
+
+       if (get_oid(matched_src_name, &oid))
+               BUG("'%s' is not a valid object, "
+                   "match_explicit_lhs() should catch this!",
+                   matched_src_name);
+       type = oid_object_info(the_repository, &oid, NULL);
+       if (type == OBJ_COMMIT) {
+               advise(_("The <src> part of the refspec is a commit object.\n"
+                        "Did you mean to create a new branch by pushing to\n"
+                        "'%s:refs/heads/%s'?"),
+                      matched_src_name, dst_value);
+       } else if (type == OBJ_TAG) {
+               advise(_("The <src> part of the refspec is a tag object.\n"
+                        "Did you mean to create a new tag by pushing to\n"
+                        "'%s:refs/tags/%s'?"),
+                      matched_src_name, dst_value);
+       } else if (type == OBJ_TREE) {
+               advise(_("The <src> part of the refspec is a tree object.\n"
+                        "Did you mean to tag a new tree by pushing to\n"
+                        "'%s:refs/tags/%s'?"),
+                      matched_src_name, dst_value);
+       } else if (type == OBJ_BLOB) {
+               advise(_("The <src> part of the refspec is a blob object.\n"
+                        "Did you mean to tag a new blob by pushing to\n"
+                        "'%s:refs/tags/%s'?"),
+                      matched_src_name, dst_value);
+       } else {
+               BUG("'%s' should be commit/tag/tree/blob, is '%d'",
+                   matched_src_name, type);
+       }
+}
+
 static int match_explicit(struct ref *src, struct ref *dst,
                          struct ref ***dst_tail,
                          struct refspec_item *rs)
@@ -1038,21 +1096,18 @@ static int match_explicit(struct ref *src, struct ref *dst,
        case 1:
                break;
        case 0:
-               if (starts_with(dst_value, "refs/"))
+               if (starts_with(dst_value, "refs/")) {
                        matched_dst = make_linked_ref(dst_value, dst_tail);
-               else if (is_null_oid(&matched_src->new_oid))
+               } else if (is_null_oid(&matched_src->new_oid)) {
                        error(_("unable to delete '%s': remote ref does not exist"),
                              dst_value);
-               else if ((dst_guess = guess_ref(dst_value, matched_src))) {
+               else if ((dst_guess = guess_ref(dst_value, matched_src))) {
                        matched_dst = make_linked_ref(dst_guess, dst_tail);
                        free(dst_guess);
-               } else
-                       error(_("unable to push to unqualified destination: %s\n"
-                               "The destination refspec neither matches an "
-                               "existing ref on the remote nor\n"
-                               "begins with refs/, and we are unable to "
-                               "guess a prefix based on the source ref."),
-                             dst_value);
+               } else {
+                       show_push_unqualified_ref_name_error(dst_value,
+                                                            matched_src->name);
+               }
                break;
        default:
                matched_dst = NULL;
@@ -1205,9 +1260,36 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds
         * sent to the other side.
         */
        if (sent_tips.nr) {
+               const int reachable_flag = 1;
+               struct commit_list *found_commits;
+               struct commit **src_commits;
+               int nr_src_commits = 0, alloc_src_commits = 16;
+               ALLOC_ARRAY(src_commits, alloc_src_commits);
+
                for_each_string_list_item(item, &src_tag) {
                        struct ref *ref = item->util;
+                       struct commit *commit;
+
+                       if (is_null_oid(&ref->new_oid))
+                               continue;
+                       commit = lookup_commit_reference_gently(the_repository,
+                                                               &ref->new_oid,
+                                                               1);
+                       if (!commit)
+                               /* not pushing a commit, which is not an error */
+                               continue;
+
+                       ALLOC_GROW(src_commits, nr_src_commits + 1, alloc_src_commits);
+                       src_commits[nr_src_commits++] = commit;
+               }
+
+               found_commits = get_reachable_subset(sent_tips.tip, sent_tips.nr,
+                                                    src_commits, nr_src_commits,
+                                                    reachable_flag);
+
+               for_each_string_list_item(item, &src_tag) {
                        struct ref *dst_ref;
+                       struct ref *ref = item->util;
                        struct commit *commit;
 
                        if (is_null_oid(&ref->new_oid))
@@ -1223,7 +1305,7 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds
                         * Is this tag, which they do not have, reachable from
                         * any of the commits we are sending?
                         */
-                       if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
+                       if (!(commit->object.flags & reachable_flag))
                                continue;
 
                        /* Add it in */
@@ -1231,7 +1313,12 @@ static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***ds
                        oidcpy(&dst_ref->new_oid, &ref->new_oid);
                        dst_ref->peer_ref = copy_ref(ref);
                }
+
+               clear_commit_marks_many(nr_src_commits, src_commits, reachable_flag);
+               free(src_commits);
+               free_commit_list(found_commits);
        }
+
        string_list_clear(&src_tag, 0);
        free(sent_tips.tip);
 }