Make git-remote a builtin
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-remote.c b/builtin-remote.c
new file mode 100644
index 0000000..25b0227
--- /dev/null
+++ b/builtin-remote.c
@@ -0,0 +1,547 @@
+#include "cache.h"
+#include "parse-options.h"
+#include "transport.h"
+#include "remote.h"
+#include "path-list.h"
+#include "strbuf.h"
+#include "run-command.h"
+#include "refs.h"
+
+static const char * const builtin_remote_usage[] = {
+ "git remote",
+ "git remote add <name> <url>",
+ "git remote rm <name>",
+ "git remote show <name>",
+ "git remote prune <name>",
+ "git remote update [group]",
+ NULL
+};
+
+static int verbose;
+
+static inline int postfixcmp(const char *string, const char *postfix)
+{
+ int len1 = strlen(string), len2 = strlen(postfix);
+ if (len1 < len2)
+ return 1;
+ return strcmp(string + len1 - len2, postfix);
+}
+
+static inline const char *skip_prefix(const char *name, const char *prefix)
+{
+ return !name ? "" :
+ prefixcmp(name, prefix) ? name : name + strlen(prefix);
+}
+
+static int opt_parse_track(const struct option *opt, const char *arg, int not)
+{
+ struct path_list *list = opt->value;
+ if (not)
+ path_list_clear(list, 0);
+ else
+ path_list_append(arg, list);
+ return 0;
+}
+
+static int fetch_remote(const char *name)
+{
+ const char *argv[] = { "fetch", name, NULL };
+ if (run_command_v_opt(argv, RUN_GIT_CMD))
+ return error("Could not fetch %s", name);
+ return 0;
+}
+
+static int add(int argc, const char **argv)
+{
+ int fetch = 0, mirror = 0;
+ struct path_list track = { NULL, 0, 0 };
+ const char *master = NULL;
+ struct remote *remote;
+ struct strbuf buf, buf2;
+ const char *name, *url;
+ int i;
+
+ struct option options[] = {
+ OPT_GROUP("add specific options"),
+ OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
+ OPT_CALLBACK('t', "track", &track, "branch",
+ "branch(es) to track", opt_parse_track),
+ OPT_STRING('m', "master", &master, "branch", "master branch"),
+ OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
+ OPT_END()
+ };
+
+ argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
+
+ if (argc < 2)
+ usage_with_options(builtin_remote_usage, options);
+
+ name = argv[0];
+ url = argv[1];
+
+ remote = remote_get(name);
+ if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
+ remote->fetch_refspec_nr))
+ die("remote %s already exists.", name);
+
+ strbuf_init(&buf, 0);
+ strbuf_init(&buf2, 0);
+
+ strbuf_addf(&buf, "remote.%s.url", name);
+ if (git_config_set(buf.buf, url))
+ return 1;
+
+ if (track.nr == 0)
+ path_list_append("*", &track);
+ for (i = 0; i < track.nr; i++) {
+ struct path_list_item *item = track.items + i;
+
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "remote.%s.fetch", name);
+
+ strbuf_reset(&buf2);
+ if (mirror)
+ strbuf_addf(&buf2, "refs/%s:refs/%s",
+ item->path, item->path);
+ else
+ strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
+ item->path, name, item->path);
+ if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
+ return 1;
+ }
+
+ if (fetch && fetch_remote(name))
+ return 1;
+
+ if (master) {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
+
+ strbuf_reset(&buf2);
+ strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
+
+ if (create_symref(buf.buf, buf2.buf, "remote add"))
+ return error("Could not setup master '%s'", master);
+ }
+
+ strbuf_release(&buf);
+ strbuf_release(&buf2);
+ path_list_clear(&track, 0);
+
+ return 0;
+}
+
+struct branch_info {
+ char *remote;
+ struct path_list merge;
+};
+
+static struct path_list branch_list;
+
+static int config_read_branches(const char *key, const char *value)
+{
+ if (!prefixcmp(key, "branch.")) {
+ char *name;
+ struct path_list_item *item;
+ struct branch_info *info;
+ enum { REMOTE, MERGE } type;
+
+ key += 7;
+ if (!postfixcmp(key, ".remote")) {
+ name = xstrndup(key, strlen(key) - 7);
+ type = REMOTE;
+ } else if (!postfixcmp(key, ".merge")) {
+ name = xstrndup(key, strlen(key) - 6);
+ type = MERGE;
+ } else
+ return 0;
+
+ item = path_list_insert(name, &branch_list);
+
+ if (!item->util)
+ item->util = xcalloc(sizeof(struct branch_info), 1);
+ info = item->util;
+ if (type == REMOTE) {
+ if (info->remote)
+ warning("more than one branch.%s", key);
+ info->remote = xstrdup(value);
+ } else {
+ char *space = strchr(value, ' ');
+ value = skip_prefix(value, "refs/heads/");
+ while (space) {
+ char *merge;
+ merge = xstrndup(value, space - value);
+ path_list_append(merge, &info->merge);
+ value = skip_prefix(space + 1, "refs/heads/");
+ space = strchr(value, ' ');
+ }
+ path_list_append(xstrdup(value), &info->merge);
+ }
+ }
+ return 0;
+}
+
+static void read_branches(void)
+{
+ if (branch_list.nr)
+ return;
+ git_config(config_read_branches);
+ sort_path_list(&branch_list);
+}
+
+struct ref_states {
+ struct remote *remote;
+ struct strbuf remote_prefix;
+ struct path_list new, stale, tracked;
+};
+
+static int handle_one_branch(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)) {
+ struct path_list_item *item;
+ const char *name = skip_prefix(refspec.src, "refs/heads/");
+ if (unsorted_path_list_has_path(&states->tracked, name) ||
+ unsorted_path_list_has_path(&states->new,
+ name))
+ return 0;
+ item = path_list_append(name, &states->stale);
+ item->util = xstrdup(refname);
+ }
+ return 0;
+}
+
+static int get_ref_states(const struct ref *ref, struct ref_states *states)
+{
+ struct ref *fetch_map = NULL, **tail = &fetch_map;
+ int i;
+
+ for (i = 0; i < states->remote->fetch_refspec_nr; i++)
+ if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
+ die("Could not get fetch map for refspec %s",
+ states->remote->fetch_refspec[i]);
+
+ states->new.strdup_paths = states->tracked.strdup_paths = 1;
+ for (ref = fetch_map; ref; ref = ref->next) {
+ struct path_list *target = &states->tracked;
+ unsigned char sha1[20];
+ void *util = NULL;
+
+ if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
+ target = &states->new;
+ else {
+ target = &states->tracked;
+ if (hashcmp(sha1, ref->new_sha1))
+ util = &states;
+ }
+ path_list_append(skip_prefix(ref->name, "refs/heads/"),
+ target)->util = util;
+ }
+ 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 branches_for_remote {
+ const char *prefix;
+ struct path_list *branches;
+};
+
+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;
+
+ if (!prefixcmp(refname, branches->prefix)) {
+ struct path_list_item *item;
+ item = path_list_append(refname, branches->branches);
+ item->util = xmalloc(20);
+ hashcpy(item->util, sha1);
+ }
+
+ return 0;
+}
+
+static int remove_branches(struct path_list *branches)
+{
+ int i, result = 0;
+ for (i = 0; i < branches->nr; i++) {
+ struct path_list_item *item = branches->items + i;
+ const char *refname = item->path;
+ unsigned char *sha1 = item->util;
+
+ if (delete_ref(refname, sha1))
+ result |= error("Could not remove branch %s", refname);
+ }
+ return result;
+}
+
+static int rm(int argc, const char **argv)
+{
+ struct option options[] = {
+ OPT_END()
+ };
+ struct remote *remote;
+ struct strbuf buf;
+ struct path_list branches = { NULL, 0, 0, 1 };
+ struct branches_for_remote cb_data = { NULL, &branches };
+ int i;
+
+ if (argc != 2)
+ usage_with_options(builtin_remote_usage, options);
+
+ remote = remote_get(argv[1]);
+ if (!remote)
+ die("No such remote: %s", argv[1]);
+
+ strbuf_init(&buf, 0);
+ strbuf_addf(&buf, "remote.%s", remote->name);
+ if (git_config_rename_section(buf.buf, NULL) < 1)
+ return error("Could not remove config section '%s'", buf.buf);
+
+ read_branches();
+ for (i = 0; i < branch_list.nr; i++) {
+ struct path_list_item *item = branch_list.items + i;
+ struct branch_info *info = item->util;
+ if (info->remote && !strcmp(info->remote, remote->name)) {
+ const char *keys[] = { "remote", "merge", NULL }, **k;
+ for (k = keys; *k; k++) {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "branch.%s.%s",
+ item->path, *k);
+ if (git_config_set(buf.buf, NULL)) {
+ strbuf_release(&buf);
+ return -1;
+ }
+ }
+ }
+ }
+
+ /*
+ * We cannot just pass a function to for_each_ref() which deletes
+ * 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;
+ i = for_each_ref(add_branch_for_removal, &cb_data);
+ strbuf_release(&buf);
+
+ if (!i)
+ i = remove_branches(&branches);
+ path_list_clear(&branches, 1);
+
+ return i;
+}
+
+static void show_list(const char *title, struct path_list *list)
+{
+ int i;
+
+ if (!list->nr)
+ return;
+
+ printf(title, list->nr > 1 ? "es" : "");
+ printf("\n ");
+ for (i = 0; i < list->nr; i++)
+ printf("%s%s", i ? " " : "", list->items[i].path);
+ printf("\n");
+}
+
+static int show_or_prune(int argc, const char **argv, int prune)
+{
+ int dry_run = 0, result = 0;
+ struct option options[] = {
+ OPT_GROUP("show 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++) {
+ 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);
+
+ 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;
+
+ strbuf_init(&buf, 0);
+ for (i = 0; i < states.stale.nr; i++) {
+ strbuf_reset(&buf);
+ strbuf_addf(&buf, "refs/remotes/%s/%s", *argv,
+ states.stale.items[i].path);
+ result |= delete_ref(buf.buf, NULL);
+ }
+
+ strbuf_release(&buf);
+ goto cleanup_states;
+ }
+
+ printf("* remote %s\n URL: %s\n", *argv,
+ states.remote->url_nr > 0 ?
+ states.remote->url[0] : "(no URL)");
+
+ for (i = 0; i < branch_list.nr; i++) {
+ struct path_list_item *branch = branch_list.items + i;
+ struct branch_info *info = branch->util;
+ int j;
+
+ if (!info->merge.nr || strcmp(*argv, info->remote))
+ continue;
+ printf(" Remote branch%s merged with 'git pull' "
+ "while on branch %s\n ",
+ info->merge.nr > 1 ? "es" : "",
+ branch->path);
+ for (j = 0; j < info->merge.nr; j++)
+ printf(" %s", info->merge.items[j].path);
+ 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 (states.remote->push_refspec_nr) {
+ printf(" Local branch%s pushed with 'git push'\n ",
+ states.remote->push_refspec_nr > 1 ?
+ "es" : "");
+ for (i = 0; i < states.remote->push_refspec_nr; i++) {
+ struct refspec *spec = states.remote->push + i;
+ printf(" %s%s%s%s", spec->force ? "+" : "",
+ skip_prefix(spec->src, "refs/heads/"),
+ spec->dst ? ":" : "",
+ skip_prefix(spec->dst, "refs/heads/"));
+ }
+ }
+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 update_one(struct remote *remote, void *priv)
+{
+ if (!remote->skip_default_update)
+ return fetch_remote(remote->name);
+ return 0;
+}
+
+static int update(int argc, const char **argv)
+{
+ int i;
+
+ if (argc < 2)
+ return for_each_remote(update_one, NULL);
+
+ for (i = 1; i < argc; i++)
+ if (fetch_remote(argv[i]))
+ return 1;
+ return 0;
+}
+
+static int get_one_entry(struct remote *remote, void *priv)
+{
+ struct path_list *list = priv;
+
+ path_list_append(remote->name, list)->util = remote->url_nr ?
+ (void *)remote->url[0] : NULL;
+ if (remote->url_nr > 1)
+ warning("Remote %s has more than one URL", remote->name);
+
+ return 0;
+}
+
+static int show_all(void)
+{
+ struct path_list list = { NULL, 0, 0 };
+ int result = for_each_remote(get_one_entry, &list);
+
+ if (!result) {
+ int i;
+
+ sort_path_list(&list);
+ for (i = 0; i < list.nr; i++) {
+ struct path_list_item *item = list.items + i;
+ printf("%s%s%s\n", item->path,
+ verbose ? "\t" : "",
+ verbose && item->util ?
+ (const char *)item->util : "");
+ }
+ }
+ return result;
+}
+
+int cmd_remote(int argc, const char **argv, const char *prefix)
+{
+ struct option options[] = {
+ OPT__VERBOSE(&verbose),
+ OPT_END()
+ };
+ int result;
+
+ argc = parse_options(argc, argv, options, builtin_remote_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+
+ if (argc < 1)
+ result = show_all();
+ else if (!strcmp(argv[0], "add"))
+ result = add(argc, argv);
+ else if (!strcmp(argv[0], "rm"))
+ result = rm(argc, argv);
+ else if (!strcmp(argv[0], "show"))
+ result = show_or_prune(argc, argv, 0);
+ else if (!strcmp(argv[0], "prune"))
+ result = show_or_prune(argc, argv, 1);
+ else if (!strcmp(argv[0], "update"))
+ result = update(argc, argv);
+ else {
+ error("Unknown subcommand: %s", argv[0]);
+ usage_with_options(builtin_remote_usage, options);
+ }
+
+ return result ? 1 : 0;
+}
