[thirdparty/git.git] / builtin-remote.c

#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 int show_all(void);

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 };
	printf("Updating %s\n", name);
	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(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
	if (!valid_fetch_refspec(buf2.buf))
		die("'%s' is not a valid remote name", name);

	strbuf_addf(&buf, "remote.%s.url", name);
	if (git_config_set(buf.buf, url))
		return 1;

	strbuf_reset(&buf);
	strbuf_addf(&buf, "remote.%s.fetch", name);

	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(&buf2);
		strbuf_addch(&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 (mirror) {
		strbuf_reset(&buf);
		strbuf_addf(&buf, "remote.%s.mirror", name);
		if (git_config_set(buf.buf, "yes"))
			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, void *cb)
{
	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, NULL);
	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/");
		/* symbolic refs pointing nowhere were handled already */
		if ((flags & REF_ISSYMREF) ||
				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;

		/* 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);
	}

	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) {
		if (!prune)
			return show_all();
		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);
		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);
			}

			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/"));
			}
			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 get_one_remote_for_update(struct remote *remote, void *priv)
{
	struct path_list *list = priv;
	if (!remote->skip_default_update)
		path_list_append(xstrdup(remote->name), list);
	return 0;
}

struct remote_group {
	const char *name;
	struct path_list *list;
} remote_group;

static int get_remote_group(const char *key, const char *value, void *cb)
{
	if (!prefixcmp(key, "remotes.") &&
			!strcmp(key + 8, remote_group.name)) {
		/* split list by white space */
		int space = strcspn(value, " \t\n");
		while (*value) {
			if (space > 1)
				path_list_append(xstrndup(value, space),
						remote_group.list);
			value += space + (value[space] != '\0');
			space = strcspn(value, " \t\n");
		}
	}

	return 0;
}

static int update(int argc, const char **argv)
{
	int i, result = 0;
	struct path_list list = { NULL, 0, 0, 0 };
	static const char *default_argv[] = { NULL, "default", NULL };

	if (argc < 2) {
		argc = 2;
		argv = default_argv;
	}

	remote_group.list = &list;
	for (i = 1; i < argc; i++) {
		remote_group.name = argv[i];
		result = git_config(get_remote_group, NULL);
	}

	if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
		result = for_each_remote(get_one_remote_for_update, &list);

	for (i = 0; i < list.nr; i++)
		result |= fetch_remote(list.items[i].path);

	/* all names were strdup()ed or strndup()ed */
	list.strdup_paths = 1;
	path_list_clear(&list, 0);

	return result;
}

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;
}
Commit	Line	Data
211c8968 JS	1	#include "cache.h"
	2	#include "parse-options.h"
	3	#include "transport.h"
	4	#include "remote.h"
	5	#include "path-list.h"
	6	#include "strbuf.h"
	7	#include "run-command.h"
	8	#include "refs.h"
	9
	10	static const char * const builtin_remote_usage[] = {
	11	"git remote",
	12	"git remote add <name> <url>",
	13	"git remote rm <name>",
	14	"git remote show <name>",
	15	"git remote prune <name>",
	16	"git remote update [group]",
	17	NULL
	18	};
	19
	20	static int verbose;
	21
c4112bb6 JK	22	static int show_all(void);
c4112bb6 JK	23
211c8968 JS	24	static inline int postfixcmp(const char string, const char postfix)
	25	{
	26	int len1 = strlen(string), len2 = strlen(postfix);
	27	if (len1 < len2)
	28	return 1;
	29	return strcmp(string + len1 - len2, postfix);
	30	}
	31
	32	static inline const char skip_prefix(const char name, const char *prefix)
	33	{
	34	return !name ? "" :
	35	prefixcmp(name, prefix) ? name : name + strlen(prefix);
	36	}
	37
	38	static int opt_parse_track(const struct option opt, const char arg, int not)
	39	{
	40	struct path_list *list = opt->value;
	41	if (not)
	42	path_list_clear(list, 0);
	43	else
	44	path_list_append(arg, list);
	45	return 0;
	46	}
	47
	48	static int fetch_remote(const char *name)
	49	{
	50	const char *argv[] = { "fetch", name, NULL };
3000658f	51	printf("Updating %s\n", name);
211c8968 JS	52	if (run_command_v_opt(argv, RUN_GIT_CMD))
	53	return error("Could not fetch %s", name);
	54	return 0;
	55	}
	56
	57	static int add(int argc, const char **argv)
	58	{
	59	int fetch = 0, mirror = 0;
	60	struct path_list track = { NULL, 0, 0 };
	61	const char *master = NULL;
	62	struct remote *remote;
	63	struct strbuf buf, buf2;
	64	const char name, url;
	65	int i;
	66
	67	struct option options[] = {
	68	OPT_GROUP("add specific options"),
	69	OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
	70	OPT_CALLBACK('t', "track", &track, "branch",
	71	"branch(es) to track", opt_parse_track),
	72	OPT_STRING('m', "master", &master, "branch", "master branch"),
	73	OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
	74	OPT_END()
	75	};
	76
	77	argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
	78
	79	if (argc < 2)
	80	usage_with_options(builtin_remote_usage, options);
	81
	82	name = argv[0];
	83	url = argv[1];
	84
	85	remote = remote_get(name);
	86	if (remote && (remote->url_nr > 1 \|\| strcmp(name, remote->url[0]) \|\|
	87	remote->fetch_refspec_nr))
	88	die("remote %s already exists.", name);
	89
	90	strbuf_init(&buf, 0);
	91	strbuf_init(&buf2, 0);
	92
24b6177e JF	93	strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
	94	if (!valid_fetch_refspec(buf2.buf))
	95	die("'%s' is not a valid remote name", name);
	96
211c8968 JS	97	strbuf_addf(&buf, "remote.%s.url", name);
	98	if (git_config_set(buf.buf, url))
	99	return 1;
	100
24b6177e JF	101	strbuf_reset(&buf);
	102	strbuf_addf(&buf, "remote.%s.fetch", name);
	103
211c8968 JS	104	if (track.nr == 0)
	105	path_list_append("*", &track);
	106	for (i = 0; i < track.nr; i++) {
	107	struct path_list_item *item = track.items + i;
	108
211c8968	109	strbuf_reset(&buf2);
1ce89cc4	110	strbuf_addch(&buf2, '+');
211c8968 JS	111	if (mirror)
	112	strbuf_addf(&buf2, "refs/%s:refs/%s",
	113	item->path, item->path);
	114	else
	115	strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
	116	item->path, name, item->path);
	117	if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
	118	return 1;
	119	}
	120
84bb2dfd PB	121	if (mirror) {
	122	strbuf_reset(&buf);
	123	strbuf_addf(&buf, "remote.%s.mirror", name);
	124	if (git_config_set(buf.buf, "yes"))
	125	return 1;
	126	}
	127
211c8968 JS	128	if (fetch && fetch_remote(name))
	129	return 1;
	130
	131	if (master) {
	132	strbuf_reset(&buf);
	133	strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
	134
	135	strbuf_reset(&buf2);
	136	strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
	137
	138	if (create_symref(buf.buf, buf2.buf, "remote add"))
	139	return error("Could not setup master '%s'", master);
	140	}
	141
	142	strbuf_release(&buf);
	143	strbuf_release(&buf2);
	144	path_list_clear(&track, 0);
	145
	146	return 0;
	147	}
	148
	149	struct branch_info {
	150	char *remote;
	151	struct path_list merge;
	152	};
	153
	154	static struct path_list branch_list;
	155
ef90d6d4	156	static int config_read_branches(const char key, const char value, void *cb)
211c8968 JS	157	{
	158	if (!prefixcmp(key, "branch.")) {
	159	char *name;
	160	struct path_list_item *item;
	161	struct branch_info *info;
	162	enum { REMOTE, MERGE } type;
	163
	164	key += 7;
	165	if (!postfixcmp(key, ".remote")) {
	166	name = xstrndup(key, strlen(key) - 7);
	167	type = REMOTE;
	168	} else if (!postfixcmp(key, ".merge")) {
	169	name = xstrndup(key, strlen(key) - 6);
	170	type = MERGE;
	171	} else
	172	return 0;
	173
	174	item = path_list_insert(name, &branch_list);
	175
	176	if (!item->util)
	177	item->util = xcalloc(sizeof(struct branch_info), 1);
	178	info = item->util;
	179	if (type == REMOTE) {
	180	if (info->remote)
	181	warning("more than one branch.%s", key);
	182	info->remote = xstrdup(value);
	183	} else {
	184	char *space = strchr(value, ' ');
	185	value = skip_prefix(value, "refs/heads/");
	186	while (space) {
	187	char *merge;
	188	merge = xstrndup(value, space - value);
	189	path_list_append(merge, &info->merge);
	190	value = skip_prefix(space + 1, "refs/heads/");
	191	space = strchr(value, ' ');
	192	}
	193	path_list_append(xstrdup(value), &info->merge);
	194	}
	195	}
	196	return 0;
	197	}
	198
	199	static void read_branches(void)
	200	{
	201	if (branch_list.nr)
	202	return;
ef90d6d4	203	git_config(config_read_branches, NULL);
211c8968 JS	204	sort_path_list(&branch_list);
	205	}
	206
	207	struct ref_states {
	208	struct remote *remote;
	209	struct strbuf remote_prefix;
	210	struct path_list new, stale, tracked;
	211	};
	212
	213	static int handle_one_branch(const char *refname,
	214	const unsigned char sha1, int flags, void cb_data)
	215	{
	216	struct ref_states *states = cb_data;
	217	struct refspec refspec;
	218
	219	memset(&refspec, 0, sizeof(refspec));
	220	refspec.dst = (char *)refname;
	221	if (!remote_find_tracking(states->remote, &refspec)) {
	222	struct path_list_item *item;
	223	const char *name = skip_prefix(refspec.src, "refs/heads/");
740fdd27 JS	224	/* symbolic refs pointing nowhere were handled already */
	225	if ((flags & REF_ISSYMREF) \|\|
	226	unsorted_path_list_has_path(&states->tracked,
	227	name) \|\|
211c8968 JS	228	unsorted_path_list_has_path(&states->new,
	229	name))
	230	return 0;
	231	item = path_list_append(name, &states->stale);
	232	item->util = xstrdup(refname);
	233	}
	234	return 0;
	235	}
	236
	237	static int get_ref_states(const struct ref ref, struct ref_states states)
	238	{
	239	struct ref fetch_map = NULL, *tail = &fetch_map;
	240	int i;
	241
	242	for (i = 0; i < states->remote->fetch_refspec_nr; i++)
	243	if (get_fetch_map(ref, states->remote->fetch + i, &tail, 1))
	244	die("Could not get fetch map for refspec %s",
	245	states->remote->fetch_refspec[i]);
	246
	247	states->new.strdup_paths = states->tracked.strdup_paths = 1;
	248	for (ref = fetch_map; ref; ref = ref->next) {
	249	struct path_list *target = &states->tracked;
	250	unsigned char sha1[20];
	251	void *util = NULL;
	252
	253	if (!ref->peer_ref \|\| read_ref(ref->peer_ref->name, sha1))
	254	target = &states->new;
	255	else {
	256	target = &states->tracked;
	257	if (hashcmp(sha1, ref->new_sha1))
	258	util = &states;
	259	}
	260	path_list_append(skip_prefix(ref->name, "refs/heads/"),
	261	target)->util = util;
	262	}
	263	free_refs(fetch_map);
	264
	265	strbuf_addf(&states->remote_prefix,
	266	"refs/remotes/%s/", states->remote->name);
	267	for_each_ref(handle_one_branch, states);
	268	sort_path_list(&states->stale);
	269
	270	return 0;
	271	}
	272
	273	struct branches_for_remote {
	274	const char *prefix;
	275	struct path_list *branches;
	276	};
	277
	278	static int add_branch_for_removal(const char *refname,
	279	const unsigned char sha1, int flags, void cb_data)
	280	{
	281	struct branches_for_remote *branches = cb_data;
	282
	283	if (!prefixcmp(refname, branches->prefix)) {
	284	struct path_list_item *item;
3b9dcff5 JS	285
	286	/* make sure that symrefs are deleted */
	287	if (flags & REF_ISSYMREF)
	288	return unlink(git_path(refname));
	289
211c8968 JS	290	item = path_list_append(refname, branches->branches);
	291	item->util = xmalloc(20);
	292	hashcpy(item->util, sha1);
	293	}
	294
	295	return 0;
	296	}
	297
	298	static int remove_branches(struct path_list *branches)
	299	{
	300	int i, result = 0;
	301	for (i = 0; i < branches->nr; i++) {
	302	struct path_list_item *item = branches->items + i;
	303	const char *refname = item->path;
	304	unsigned char *sha1 = item->util;
	305
	306	if (delete_ref(refname, sha1))
	307	result \|= error("Could not remove branch %s", refname);
	308	}
	309	return result;
	310	}
	311
	312	static int rm(int argc, const char **argv)
	313	{
	314	struct option options[] = {
	315	OPT_END()
	316	};
	317	struct remote *remote;
	318	struct strbuf buf;
	319	struct path_list branches = { NULL, 0, 0, 1 };
	320	struct branches_for_remote cb_data = { NULL, &branches };
	321	int i;
	322
	323	if (argc != 2)
	324	usage_with_options(builtin_remote_usage, options);
	325
	326	remote = remote_get(argv[1]);
	327	if (!remote)
	328	die("No such remote: %s", argv[1]);
	329
	330	strbuf_init(&buf, 0);
	331	strbuf_addf(&buf, "remote.%s", remote->name);
	332	if (git_config_rename_section(buf.buf, NULL) < 1)
	333	return error("Could not remove config section '%s'", buf.buf);
	334
	335	read_branches();
	336	for (i = 0; i < branch_list.nr; i++) {
	337	struct path_list_item *item = branch_list.items + i;
	338	struct branch_info *info = item->util;
	339	if (info->remote && !strcmp(info->remote, remote->name)) {
	340	const char keys[] = { "remote", "merge", NULL }, *k;
	341	for (k = keys; *k; k++) {
	342	strbuf_reset(&buf);
	343	strbuf_addf(&buf, "branch.%s.%s",
	344	item->path, *k);
	345	if (git_config_set(buf.buf, NULL)) {
	346	strbuf_release(&buf);
	347	return -1;
	348	}
	349	}
	350	}
	351	}
	352
	353	/*
354	* We cannot just pass a function to for_each_ref() which deletes
355	* the branches one by one, since for_each_ref() relies on cached
356	* refs, which are invalidated when deleting a branch.
357	*/
358	strbuf_reset(&buf);
359	strbuf_addf(&buf, "refs/remotes/%s/", remote->name);
360	cb_data.prefix = buf.buf;
361	i = for_each_ref(add_branch_for_removal, &cb_data);
362	strbuf_release(&buf);
363
364	if (!i)
365	i = remove_branches(&branches);
366	path_list_clear(&branches, 1);
367
368	return i;
369	}
370
371	static void show_list(const char title, struct path_list list)
372	{
373	int i;
374
375	if (!list->nr)
376	return;
377
378	printf(title, list->nr > 1 ? "es" : "");
379	printf("\n ");
380	for (i = 0; i < list->nr; i++)
381	printf("%s%s", i ? " " : "", list->items[i].path);
382	printf("\n");
383	}
384
385	static int show_or_prune(int argc, const char **argv, int prune)
386	{
387	int dry_run = 0, result = 0;
388	struct option options[] = {
389	OPT_GROUP("show specific options"),
390	OPT__DRY_RUN(&dry_run),
391	OPT_END()
392	};
393	struct ref_states states;
394
395	argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
396
c4112bb6 JK	397	if (argc < 1) {
	398	if (!prune)
	399	return show_all();
211c8968	400	usage_with_options(builtin_remote_usage, options);
c4112bb6	401	}
211c8968 JS	402
	403	memset(&states, 0, sizeof(states));
	404	for (; argc; argc--, argv++) {
	405	struct transport *transport;
	406	const struct ref *ref;
	407	struct strbuf buf;
	408	int i, got_states;
	409
	410	states.remote = remote_get(*argv);
	411	if (!states.remote)
	412	return error("No such remote: %s", *argv);
	413	transport = transport_get(NULL, states.remote->url_nr > 0 ?
	414	states.remote->url[0] : NULL);
	415	ref = transport_get_remote_refs(transport);
62173678	416	transport_disconnect(transport);
211c8968 JS	417
	418	read_branches();
	419	got_states = get_ref_states(ref, &states);
	420	if (got_states)
	421	result = error("Error getting local info for '%s'",
	422	states.remote->name);
	423
	424	if (prune) {
	425	struct strbuf buf;
4ebc914c	426	int prefix_len;
211c8968 JS	427
211c8968 JS	428	strbuf_init(&buf, 0);
4ebc914c JS	429	if (states.remote->fetch_refspec_nr == 1 &&
	430	states.remote->fetch->pattern &&
	431	!strcmp(states.remote->fetch->src,
	432	states.remote->fetch->dst))
	433	/* handle --mirror remote */
	434	strbuf_addstr(&buf, "refs/heads/");
	435	else
	436	strbuf_addf(&buf, "refs/remotes/%s/", *argv);
	437	prefix_len = buf.len;
	438
211c8968	439	for (i = 0; i < states.stale.nr; i++) {
4ebc914c JS	440	strbuf_setlen(&buf, prefix_len);
4ebc914c JS	441	strbuf_addstr(&buf, states.stale.items[i].path);
211c8968 JS	442	result \|= delete_ref(buf.buf, NULL);
	443	}
	444
	445	strbuf_release(&buf);
	446	goto cleanup_states;
	447	}
	448
	449	printf("* remote %s\n URL: %s\n", *argv,
	450	states.remote->url_nr > 0 ?
	451	states.remote->url[0] : "(no URL)");
	452
	453	for (i = 0; i < branch_list.nr; i++) {
	454	struct path_list_item *branch = branch_list.items + i;
	455	struct branch_info *info = branch->util;
	456	int j;
	457
	458	if (!info->merge.nr \|\| strcmp(*argv, info->remote))
	459	continue;
	460	printf(" Remote branch%s merged with 'git pull' "
	461	"while on branch %s\n ",
	462	info->merge.nr > 1 ? "es" : "",
	463	branch->path);
	464	for (j = 0; j < info->merge.nr; j++)
	465	printf(" %s", info->merge.items[j].path);
	466	printf("\n");
	467	}
	468
	469	if (got_states)
	470	continue;
	471	strbuf_init(&buf, 0);
	472	strbuf_addf(&buf, " New remote branch%%s (next fetch will "
	473	"store in remotes/%s)", states.remote->name);
	474	show_list(buf.buf, &states.new);
	475	strbuf_release(&buf);
	476	show_list(" Stale tracking branch%s (use 'git remote prune')",
	477	&states.stale);
	478	show_list(" Tracked remote branch%s",
	479	&states.tracked);
	480
	481	if (states.remote->push_refspec_nr) {
	482	printf(" Local branch%s pushed with 'git push'\n ",
	483	states.remote->push_refspec_nr > 1 ?
	484	"es" : "");
	485	for (i = 0; i < states.remote->push_refspec_nr; i++) {
	486	struct refspec *spec = states.remote->push + i;
	487	printf(" %s%s%s%s", spec->force ? "+" : "",
	488	skip_prefix(spec->src, "refs/heads/"),
	489	spec->dst ? ":" : "",
	490	skip_prefix(spec->dst, "refs/heads/"));
	491	}
ec31b0ce	492	printf("\n");
211c8968 JS	493	}
	494	cleanup_states:
	495	/* NEEDSWORK: free remote */
	496	path_list_clear(&states.new, 0);
	497	path_list_clear(&states.stale, 0);
	498	path_list_clear(&states.tracked, 0);
	499	}
	500
	501	return result;
	502	}
	503
84521ed6	504	static int get_one_remote_for_update(struct remote remote, void priv)
211c8968	505	{
84521ed6	506	struct path_list *list = priv;
211c8968	507	if (!remote->skip_default_update)
84521ed6 JS	508	path_list_append(xstrdup(remote->name), list);
	509	return 0;
	510	}
	511
	512	struct remote_group {
	513	const char *name;
	514	struct path_list *list;
	515	} remote_group;
	516
ef90d6d4	517	static int get_remote_group(const char key, const char value, void *cb)
84521ed6 JS	518	{
	519	if (!prefixcmp(key, "remotes.") &&
	520	!strcmp(key + 8, remote_group.name)) {
	521	/* split list by white space */
	522	int space = strcspn(value, " \t\n");
	523	while (*value) {
	524	if (space > 1)
	525	path_list_append(xstrndup(value, space),
	526	remote_group.list);
	527	value += space + (value[space] != '\0');
	528	space = strcspn(value, " \t\n");
	529	}
	530	}
	531
211c8968 JS	532	return 0;
	533	}
	534
	535	static int update(int argc, const char **argv)
	536	{
84521ed6 JS	537	int i, result = 0;
	538	struct path_list list = { NULL, 0, 0, 0 };
	539	static const char *default_argv[] = { NULL, "default", NULL };
211c8968	540
84521ed6 JS	541	if (argc < 2) {
	542	argc = 2;
	543	argv = default_argv;
	544	}
211c8968	545
84521ed6 JS	546	remote_group.list = &list;
	547	for (i = 1; i < argc; i++) {
	548	remote_group.name = argv[i];
ef90d6d4	549	result = git_config(get_remote_group, NULL);
84521ed6 JS	550	}
	551
	552	if (!result && !list.nr && argc == 2 && !strcmp(argv[1], "default"))
	553	result = for_each_remote(get_one_remote_for_update, &list);
	554
	555	for (i = 0; i < list.nr; i++)
	556	result \|= fetch_remote(list.items[i].path);
	557
	558	/* all names were strdup()ed or strndup()ed */
	559	list.strdup_paths = 1;
	560	path_list_clear(&list, 0);
	561
	562	return result;
211c8968 JS	563	}
	564
	565	static int get_one_entry(struct remote remote, void priv)
	566	{
	567	struct path_list *list = priv;
	568
	569	path_list_append(remote->name, list)->util = remote->url_nr ?
	570	(void *)remote->url[0] : NULL;
	571	if (remote->url_nr > 1)
	572	warning("Remote %s has more than one URL", remote->name);
	573
	574	return 0;
	575	}
	576
	577	static int show_all(void)
	578	{
	579	struct path_list list = { NULL, 0, 0 };
	580	int result = for_each_remote(get_one_entry, &list);
	581
	582	if (!result) {
	583	int i;
	584
	585	sort_path_list(&list);
	586	for (i = 0; i < list.nr; i++) {
	587	struct path_list_item *item = list.items + i;
	588	printf("%s%s%s\n", item->path,
	589	verbose ? "\t" : "",
	590	verbose && item->util ?
	591	(const char *)item->util : "");
	592	}
	593	}
	594	return result;
	595	}
	596
	597	int cmd_remote(int argc, const char *argv, const char prefix)
	598	{
	599	struct option options[] = {
	600	OPT__VERBOSE(&verbose),
	601	OPT_END()
	602	};
	603	int result;
	604
	605	argc = parse_options(argc, argv, options, builtin_remote_usage,
	606	PARSE_OPT_STOP_AT_NON_OPTION);
	607
	608	if (argc < 1)
	609	result = show_all();
	610	else if (!strcmp(argv[0], "add"))
	611	result = add(argc, argv);
	612	else if (!strcmp(argv[0], "rm"))
	613	result = rm(argc, argv);
	614	else if (!strcmp(argv[0], "show"))
	615	result = show_or_prune(argc, argv, 0);
	616	else if (!strcmp(argv[0], "prune"))
	617	result = show_or_prune(argc, argv, 1);
	618	else if (!strcmp(argv[0], "update"))
	619	result = update(argc, argv);
	620	else {
	621	error("Unknown subcommand: %s", argv[0]);
	622	usage_with_options(builtin_remote_usage, options);
	623	}
	624
	625	return result ? 1 : 0;
	626	}