Documentation: tweak use case in "git stash save --keep-index"
[gitweb.git] / builtin-remote.c
index 8b63619ef08a2ac3d96000908fe4986396ddd6a2..145dd8568c7a644344d8bb25ba395b10c5835c5c 100644 (file)
@@ -153,7 +153,7 @@ struct branch_info {
 
 static struct path_list branch_list;
 
-static int config_read_branches(const char *key, const char *value)
+static int config_read_branches(const char *key, const char *value, void *cb)
 {
        if (!prefixcmp(key, "branch.")) {
                char *name;
@@ -200,13 +200,12 @@ static void read_branches(void)
 {
        if (branch_list.nr)
                return;
-       git_config(config_read_branches);
+       git_config(config_read_branches, NULL);
        sort_path_list(&branch_list);
 }
 
 struct ref_states {
        struct remote *remote;
-       struct strbuf remote_prefix;
        struct path_list new, stale, tracked;
 };
 
@@ -262,35 +261,71 @@ static int get_ref_states(const struct ref *ref, struct ref_states *states)
        }
        free_refs(fetch_map);
 
-       strbuf_addf(&states->remote_prefix,
-               "refs/remotes/%s/", states->remote->name);
        for_each_ref(handle_one_branch, states);
        sort_path_list(&states->stale);
 
        return 0;
 }
 
+struct known_remote {
+       struct known_remote *next;
+       struct remote *remote;
+};
+
+struct known_remotes {
+       struct remote *to_delete;
+       struct known_remote *list;
+};
+
+static int add_known_remote(struct remote *remote, void *cb_data)
+{
+       struct known_remotes *all = cb_data;
+       struct known_remote *r;
+
+       if (!strcmp(all->to_delete->name, remote->name))
+               return 0;
+
+       r = xmalloc(sizeof(*r));
+       r->remote = remote;
+       r->next = all->list;
+       all->list = r;
+       return 0;
+}
+
 struct branches_for_remote {
-       const char *prefix;
+       struct remote *remote;
        struct path_list *branches;
+       struct known_remotes *keep;
 };
 
 static int add_branch_for_removal(const char *refname,
        const unsigned char *sha1, int flags, void *cb_data)
 {
        struct branches_for_remote *branches = cb_data;
+       struct refspec refspec;
+       struct path_list_item *item;
+       struct known_remote *kr;
 
-       if (!prefixcmp(refname, branches->prefix)) {
-               struct path_list_item *item;
+       memset(&refspec, 0, sizeof(refspec));
+       refspec.dst = (char *)refname;
+       if (remote_find_tracking(branches->remote, &refspec))
+               return 0;
+
+       /* don't delete a branch if another remote also uses it */
+       for (kr = branches->keep->list; kr; kr = kr->next) {
+               memset(&refspec, 0, sizeof(refspec));
+               refspec.dst = (char *)refname;
+               if (!remote_find_tracking(kr->remote, &refspec))
+                       return 0;
+       }
 
-               /* make sure that symrefs are deleted */
-               if (flags & REF_ISSYMREF)
-                       return unlink(git_path(refname));
+       /* make sure that symrefs are deleted */
+       if (flags & REF_ISSYMREF)
+               return unlink(git_path(refname));
 
-               item = path_list_append(refname, branches->branches);
-               item->util = xmalloc(20);
-               hashcpy(item->util, sha1);
-       }
+       item = path_list_append(refname, branches->branches);
+       item->util = xmalloc(20);
+       hashcpy(item->util, sha1);
 
        return 0;
 }
@@ -316,8 +351,9 @@ static int rm(int argc, const char **argv)
        };
        struct remote *remote;
        struct strbuf buf;
+       struct known_remotes known_remotes = { NULL, NULL };
        struct path_list branches = { NULL, 0, 0, 1 };
-       struct branches_for_remote cb_data = { NULL, &branches };
+       struct branches_for_remote cb_data = { NULL, &branches, &known_remotes };
        int i;
 
        if (argc != 2)
@@ -327,6 +363,9 @@ static int rm(int argc, const char **argv)
        if (!remote)
                die("No such remote: %s", argv[1]);
 
+       known_remotes.to_delete = remote;
+       for_each_remote(add_known_remote, &known_remotes);
+
        strbuf_init(&buf, 0);
        strbuf_addf(&buf, "remote.%s", remote->name);
        if (git_config_rename_section(buf.buf, NULL) < 1)
@@ -355,9 +394,7 @@ static int rm(int argc, const char **argv)
         * the branches one by one, since for_each_ref() relies on cached
         * refs, which are invalidated when deleting a branch.
         */
-       strbuf_reset(&buf);
-       strbuf_addf(&buf, "refs/remotes/%s/", remote->name);
-       cb_data.prefix = buf.buf;
+       cb_data.remote = remote;
        i = for_each_ref(add_branch_for_removal, &cb_data);
        strbuf_release(&buf);
 
@@ -382,69 +419,68 @@ static void show_list(const char *title, struct path_list *list)
        printf("\n");
 }
 
-static int show_or_prune(int argc, const char **argv, int prune)
+static int get_remote_ref_states(const char *name,
+                                struct ref_states *states,
+                                int query)
 {
-       int dry_run = 0, result = 0;
+       struct transport *transport;
+       const struct ref *ref;
+
+       states->remote = remote_get(name);
+       if (!states->remote)
+               return error("No such remote: %s", name);
+
+       read_branches();
+
+       if (query) {
+               transport = transport_get(NULL, states->remote->url_nr > 0 ?
+                       states->remote->url[0] : NULL);
+               ref = transport_get_remote_refs(transport);
+               transport_disconnect(transport);
+
+               get_ref_states(ref, states);
+       }
+
+       return 0;
+}
+
+static int append_ref_to_tracked_list(const char *refname,
+       const unsigned char *sha1, int flags, void *cb_data)
+{
+       struct ref_states *states = cb_data;
+       struct refspec refspec;
+
+       memset(&refspec, 0, sizeof(refspec));
+       refspec.dst = (char *)refname;
+       if (!remote_find_tracking(states->remote, &refspec)) {
+               path_list_append(skip_prefix(refspec.src, "refs/heads/"),
+                       &states->tracked);
+       }
+
+       return 0;
+}
+
+static int show(int argc, const char **argv)
+{
+       int no_query = 0, result = 0;
        struct option options[] = {
                OPT_GROUP("show specific options"),
-               OPT__DRY_RUN(&dry_run),
+               OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
                OPT_END()
        };
        struct ref_states states;
 
        argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 
-       if (argc < 1) {
-               if (!prune)
-                       return show_all();
-               usage_with_options(builtin_remote_usage, options);
-       }
+       if (argc < 1)
+               return show_all();
 
        memset(&states, 0, sizeof(states));
        for (; argc; argc--, argv++) {
-               struct transport *transport;
-               const struct ref *ref;
                struct strbuf buf;
-               int i, got_states;
-
-               states.remote = remote_get(*argv);
-               if (!states.remote)
-                       return error("No such remote: %s", *argv);
-               transport = transport_get(NULL, states.remote->url_nr > 0 ?
-                       states.remote->url[0] : NULL);
-               ref = transport_get_remote_refs(transport);
-               transport_disconnect(transport);
-
-               read_branches();
-               got_states = get_ref_states(ref, &states);
-               if (got_states)
-                       result = error("Error getting local info for '%s'",
-                                       states.remote->name);
-
-               if (prune) {
-                       struct strbuf buf;
-                       int prefix_len;
-
-                       strbuf_init(&buf, 0);
-                       if (states.remote->fetch_refspec_nr == 1 &&
-                                       states.remote->fetch->pattern &&
-                                       !strcmp(states.remote->fetch->src,
-                                               states.remote->fetch->dst))
-                               /* handle --mirror remote */
-                               strbuf_addstr(&buf, "refs/heads/");
-                       else
-                               strbuf_addf(&buf, "refs/remotes/%s/", *argv);
-                       prefix_len = buf.len;
-
-                       for (i = 0; i < states.stale.nr; i++) {
-                               strbuf_setlen(&buf, prefix_len);
-                               strbuf_addstr(&buf, states.stale.items[i].path);
-                               result |= delete_ref(buf.buf, NULL);
-                       }
+               int i;
 
-                       strbuf_release(&buf);
-                       goto cleanup_states;
-               }
+               get_remote_ref_states(*argv, &states, !no_query);
 
                printf("* remote %s\n  URL: %s\n", *argv,
                        states.remote->url_nr > 0 ?
@@ -466,17 +502,19 @@ static int show_or_prune(int argc, const char **argv, int prune)
                        printf("\n");
                }
 
-               if (got_states)
-                       continue;
-               strbuf_init(&buf, 0);
-               strbuf_addf(&buf, "  New remote branch%%s (next fetch will "
-                       "store in remotes/%s)", states.remote->name);
-               show_list(buf.buf, &states.new);
-               strbuf_release(&buf);
-               show_list("  Stale tracking branch%s (use 'git remote prune')",
-                               &states.stale);
-               show_list("  Tracked remote branch%s",
-                               &states.tracked);
+               if (!no_query) {
+                       strbuf_init(&buf, 0);
+                       strbuf_addf(&buf, "  New remote branch%%s (next fetch "
+                               "will store in remotes/%s)", states.remote->name);
+                       show_list(buf.buf, &states.new);
+                       strbuf_release(&buf);
+                       show_list("  Stale tracking branch%s (use 'git remote "
+                               "prune')", &states.stale);
+               }
+
+               if (no_query)
+                       for_each_ref(append_ref_to_tracked_list, &states);
+               show_list("  Tracked remote branch%s", &states.tracked);
 
                if (states.remote->push_refspec_nr) {
                        printf("  Local branch%s pushed with 'git push'\n   ",
@@ -491,7 +529,55 @@ static int show_or_prune(int argc, const char **argv, int prune)
                        }
                        printf("\n");
                }
-cleanup_states:
+
+               /* NEEDSWORK: free remote */
+               path_list_clear(&states.new, 0);
+               path_list_clear(&states.stale, 0);
+               path_list_clear(&states.tracked, 0);
+       }
+
+       return result;
+}
+
+static int prune(int argc, const char **argv)
+{
+       int dry_run = 0, result = 0;
+       struct option options[] = {
+               OPT_GROUP("prune specific options"),
+               OPT__DRY_RUN(&dry_run),
+               OPT_END()
+       };
+       struct ref_states states;
+
+       argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
+
+       if (argc < 1)
+               usage_with_options(builtin_remote_usage, options);
+
+       memset(&states, 0, sizeof(states));
+       for (; argc; argc--, argv++) {
+               int i;
+
+               get_remote_ref_states(*argv, &states, 1);
+
+               if (states.stale.nr) {
+                       printf("Pruning %s\n", *argv);
+                       printf("URL: %s\n",
+                              states.remote->url_nr
+                              ? states.remote->url[0]
+                              : "(no URL)");
+               }
+
+               for (i = 0; i < states.stale.nr; i++) {
+                       const char *refname = states.stale.items[i].util;
+
+                       if (!dry_run)
+                               result |= delete_ref(refname, NULL);
+
+                       printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
+                              skip_prefix(refname, "refs/remotes/"));
+               }
+
                /* NEEDSWORK: free remote */
                path_list_clear(&states.new, 0);
                path_list_clear(&states.stale, 0);
@@ -514,7 +600,7 @@ struct remote_group {
        struct path_list *list;
 } remote_group;
 
-static int get_remote_group(const char *key, const char *value)
+static int get_remote_group(const char *key, const char *value, void *cb)
 {
        if (!prefixcmp(key, "remotes.") &&
                        !strcmp(key + 8, remote_group.name)) {
@@ -546,7 +632,7 @@ static int update(int argc, const char **argv)
        remote_group.list = &list;
        for (i = 1; i < argc; i++) {
                remote_group.name = argv[i];
-               result = git_config(get_remote_group);
+               result = git_config(get_remote_group, NULL);
        }
 
        if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
@@ -612,9 +698,9 @@ int cmd_remote(int argc, const char **argv, const char *prefix)
        else if (!strcmp(argv[0], "rm"))
                result = rm(argc, argv);
        else if (!strcmp(argv[0], "show"))
-               result = show_or_prune(argc, argv, 0);
+               result = show(argc, argv);
        else if (!strcmp(argv[0], "prune"))
-               result = show_or_prune(argc, argv, 1);
+               result = prune(argc, argv);
        else if (!strcmp(argv[0], "update"))
                result = update(argc, argv);
        else {