[thirdparty/git.git] / t / helper / test-ref-store.c

#include "test-tool.h"
#include "hex.h"
#include "refs.h"
#include "setup.h"
#include "worktree.h"
#include "object-store-ll.h"
#include "path.h"
#include "repository.h"
#include "strbuf.h"
#include "revision.h"

struct flag_definition {
	const char *name;
	uint64_t mask;
};

#define FLAG_DEF(x)     \
	{               \
#x, (x) \
	}

static unsigned int parse_flags(const char *str, struct flag_definition *defs)
{
	struct string_list masks = STRING_LIST_INIT_DUP;
	int i = 0;
	unsigned int result = 0;

	if (!strcmp(str, "0"))
		return 0;

	string_list_split(&masks, str, ',', 64);
	for (; i < masks.nr; i++) {
		const char *name = masks.items[i].string;
		struct flag_definition *def = defs;
		int found = 0;
		while (def->name) {
			if (!strcmp(def->name, name)) {
				result |= def->mask;
				found = 1;
				break;
			}
			def++;
		}
		if (!found)
			die("unknown flag \"%s\"", name);
	}

	string_list_clear(&masks, 0);
	return result;
}

static struct flag_definition empty_flags[] = { { NULL, 0 } };

static const char *notnull(const char *arg, const char *name)
{
	if (!arg)
		die("%s required", name);
	return arg;
}

static unsigned int arg_flags(const char *arg, const char *name,
			      struct flag_definition *defs)
{
	return parse_flags(notnull(arg, name), defs);
}

static const char **get_store(const char **argv, struct ref_store **refs)
{
	const char *gitdir;

	if (!argv[0]) {
		die("ref store required");
	} else if (!strcmp(argv[0], "main")) {
		*refs = get_main_ref_store(the_repository);
	} else if (skip_prefix(argv[0], "submodule:", &gitdir)) {
		struct strbuf sb = STRBUF_INIT;
		int ret;

		ret = strbuf_git_path_submodule(&sb, gitdir, "objects/");
		if (ret)
			die("strbuf_git_path_submodule failed: %d", ret);
		add_to_alternates_memory(sb.buf);
		strbuf_release(&sb);

		*refs = get_submodule_ref_store(gitdir);
	} else if (skip_prefix(argv[0], "worktree:", &gitdir)) {
		struct worktree **p, **worktrees = get_worktrees();

		for (p = worktrees; *p; p++) {
			struct worktree *wt = *p;

			if (!wt->id) {
				/* special case for main worktree */
				if (!strcmp(gitdir, "main"))
					break;
			} else if (!strcmp(gitdir, wt->id))
				break;
		}
		if (!*p)
			die("no such worktree: %s", gitdir);

		*refs = get_worktree_ref_store(*p);
		free_worktrees(worktrees);
	} else
		die("unknown backend %s", argv[0]);

	if (!*refs)
		die("no ref store");

	/* consume store-specific optional arguments if needed */

	return argv + 1;
}

static int cmd_create_symref(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");
	const char *target = notnull(*argv++, "target");
	const char *logmsg = *argv++;

	return refs_create_symref(refs, refname, target, logmsg);
}

static struct flag_definition transaction_flags[] = {
	FLAG_DEF(REF_NO_DEREF),
	FLAG_DEF(REF_FORCE_CREATE_REFLOG),
	FLAG_DEF(REF_SKIP_OID_VERIFICATION),
	FLAG_DEF(REF_SKIP_REFNAME_VERIFICATION),
	{ NULL, 0 }
};

static int cmd_delete_refs(struct ref_store *refs, const char **argv)
{
	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
	const char *msg = *argv++;
	struct string_list refnames = STRING_LIST_INIT_NODUP;
	int result;

	while (*argv)
		string_list_append(&refnames, *argv++);

	result = refs_delete_refs(refs, msg, &refnames, flags);
	string_list_clear(&refnames, 0);
	return result;
}

static int cmd_rename_ref(struct ref_store *refs, const char **argv)
{
	const char *oldref = notnull(*argv++, "oldref");
	const char *newref = notnull(*argv++, "newref");
	const char *logmsg = *argv++;

	return refs_rename_ref(refs, oldref, newref, logmsg);
}

static int each_ref(const char *refname, const struct object_id *oid,
		    int flags, void *cb_data UNUSED)
{
	printf("%s %s 0x%x\n", oid_to_hex(oid), refname, flags);
	return 0;
}

static int cmd_for_each_ref(struct ref_store *refs, const char **argv)
{
	const char *prefix = notnull(*argv++, "prefix");

	return refs_for_each_ref_in(refs, prefix, each_ref, NULL);
}

static int cmd_for_each_ref__exclude(struct ref_store *refs, const char **argv)
{
	const char *prefix = notnull(*argv++, "prefix");
	const char **exclude_patterns = argv;

	return refs_for_each_fullref_in(refs, prefix, exclude_patterns, each_ref,
					NULL);
}

static int cmd_resolve_ref(struct ref_store *refs, const char **argv)
{
	struct object_id oid = *null_oid();
	const char *refname = notnull(*argv++, "refname");
	int resolve_flags = arg_flags(*argv++, "resolve-flags", empty_flags);
	int flags;
	const char *ref;

	ref = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
				      &oid, &flags);
	printf("%s %s 0x%x\n", oid_to_hex(&oid), ref ? ref : "(null)", flags);
	return ref ? 0 : 1;
}

static int cmd_verify_ref(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");
	struct strbuf err = STRBUF_INIT;
	int ret;

	ret = refs_verify_refname_available(refs, refname, NULL, NULL, &err);
	if (err.len)
		puts(err.buf);
	return ret;
}

static int each_reflog(const char *refname, void *cb_data UNUSED)
{
	printf("%s\n", refname);
	return 0;
}

static int cmd_for_each_reflog(struct ref_store *refs,
			       const char **argv UNUSED)
{
	return refs_for_each_reflog(refs, each_reflog, NULL);
}

static int each_reflog_ent(struct object_id *old_oid, struct object_id *new_oid,
			   const char *committer, timestamp_t timestamp,
			   int tz, const char *msg, void *cb_data UNUSED)
{
	printf("%s %s %s %" PRItime " %+05d%s%s", oid_to_hex(old_oid),
	       oid_to_hex(new_oid), committer, timestamp, tz,
	       *msg == '\n' ? "" : "\t", msg);
	return 0;
}

static int cmd_for_each_reflog_ent(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");

	return refs_for_each_reflog_ent(refs, refname, each_reflog_ent, refs);
}

static int cmd_for_each_reflog_ent_reverse(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");

	return refs_for_each_reflog_ent_reverse(refs, refname, each_reflog_ent, refs);
}

static int cmd_reflog_exists(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");

	return !refs_reflog_exists(refs, refname);
}

static int cmd_create_reflog(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");
	struct strbuf err = STRBUF_INIT;
	int ret;

	ret = refs_create_reflog(refs, refname, &err);
	if (err.len)
		puts(err.buf);
	return ret;
}

static int cmd_delete_reflog(struct ref_store *refs, const char **argv)
{
	const char *refname = notnull(*argv++, "refname");

	return refs_delete_reflog(refs, refname);
}

static int cmd_delete_ref(struct ref_store *refs, const char **argv)
{
	const char *msg = notnull(*argv++, "msg");
	const char *refname = notnull(*argv++, "refname");
	const char *sha1_buf = notnull(*argv++, "old-sha1");
	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
	struct object_id old_oid;

	if (get_oid_hex(sha1_buf, &old_oid))
		die("cannot parse %s as %s", sha1_buf, the_hash_algo->name);

	return refs_delete_ref(refs, msg, refname, &old_oid, flags);
}

static int cmd_update_ref(struct ref_store *refs, const char **argv)
{
	const char *msg = notnull(*argv++, "msg");
	const char *refname = notnull(*argv++, "refname");
	const char *new_sha1_buf = notnull(*argv++, "new-sha1");
	const char *old_sha1_buf = notnull(*argv++, "old-sha1");
	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
	struct object_id old_oid, *old_oid_ptr = NULL;
	struct object_id new_oid;

	if (*old_sha1_buf) {
		if (get_oid_hex(old_sha1_buf, &old_oid))
			die("cannot parse %s as %s", old_sha1_buf, the_hash_algo->name);
		old_oid_ptr = &old_oid;
	}
	if (get_oid_hex(new_sha1_buf, &new_oid))
		die("cannot parse %s as %s", new_sha1_buf, the_hash_algo->name);

	return refs_update_ref(refs, msg, refname,
			       &new_oid, old_oid_ptr,
			       flags, UPDATE_REFS_DIE_ON_ERR);
}

struct command {
	const char *name;
	int (*func)(struct ref_store *refs, const char **argv);
};

static struct command commands[] = {
	{ "create-symref", cmd_create_symref },
	{ "delete-refs", cmd_delete_refs },
	{ "rename-ref", cmd_rename_ref },
	{ "for-each-ref", cmd_for_each_ref },
	{ "for-each-ref--exclude", cmd_for_each_ref__exclude },
	{ "resolve-ref", cmd_resolve_ref },
	{ "verify-ref", cmd_verify_ref },
	{ "for-each-reflog", cmd_for_each_reflog },
	{ "for-each-reflog-ent", cmd_for_each_reflog_ent },
	{ "for-each-reflog-ent-reverse", cmd_for_each_reflog_ent_reverse },
	{ "reflog-exists", cmd_reflog_exists },
	{ "create-reflog", cmd_create_reflog },
	{ "delete-reflog", cmd_delete_reflog },
	/*
	 * backend transaction functions can't be tested separately
	 */
	{ "delete-ref", cmd_delete_ref },
	{ "update-ref", cmd_update_ref },
	{ NULL, NULL }
};

int cmd__ref_store(int argc UNUSED, const char **argv)
{
	struct ref_store *refs;
	const char *func;
	struct command *cmd;

	setup_git_directory();

	argv = get_store(argv + 1, &refs);

	func = *argv++;
	if (!func)
		die("ref function required");
	for (cmd = commands; cmd->name; cmd++) {
		if (!strcmp(func, cmd->name))
			return cmd->func(refs, argv);
	}
	die("unknown function %s", func);
	return 0;
}
Commit	Line	Data
65370d81	1	#include "test-tool.h"
41771fa4	2	#include "hex.h"
80f2a609	3	#include "refs.h"
e38da487	4	#include "setup.h"
fa099d23	5	#include "worktree.h"
a034e910	6	#include "object-store-ll.h"
c339932b	7	#include "path.h"
23a3f0cb	8	#include "repository.h"
a034e910	9	#include "strbuf.h"
4fe42f32	10	#include "revision.h"
80f2a609	11
cd2d40fb HWN	12	struct flag_definition {
	13	const char *name;
	14	uint64_t mask;
	15	};
	16
	17	#define FLAG_DEF(x) \
	18	{ \
	19	#x, (x) \
	20	}
	21
	22	static unsigned int parse_flags(const char str, struct flag_definition defs)
	23	{
	24	struct string_list masks = STRING_LIST_INIT_DUP;
	25	int i = 0;
	26	unsigned int result = 0;
	27
	28	if (!strcmp(str, "0"))
	29	return 0;
	30
	31	string_list_split(&masks, str, ',', 64);
	32	for (; i < masks.nr; i++) {
	33	const char *name = masks.items[i].string;
	34	struct flag_definition *def = defs;
	35	int found = 0;
	36	while (def->name) {
	37	if (!strcmp(def->name, name)) {
	38	result \|= def->mask;
	39	found = 1;
	40	break;
	41	}
	42	def++;
	43	}
	44	if (!found)
	45	die("unknown flag \"%s\"", name);
	46	}
	47
	48	string_list_clear(&masks, 0);
	49	return result;
	50	}
	51
	52	static struct flag_definition empty_flags[] = { { NULL, 0 } };
	53
80f2a609 NTND	54	static const char notnull(const char arg, const char *name)
	55	{
	56	if (!arg)
	57	die("%s required", name);
	58	return arg;
	59	}
	60
cd2d40fb HWN	61	static unsigned int arg_flags(const char arg, const char name,
cd2d40fb HWN	62	struct flag_definition *defs)
80f2a609	63	{
cd2d40fb	64	return parse_flags(notnull(arg, name), defs);
80f2a609 NTND	65	}
	66
	67	static const char get_store(const char argv, struct ref_store **refs)
	68	{
	69	const char *gitdir;
	70
	71	if (!argv[0]) {
	72	die("ref store required");
	73	} else if (!strcmp(argv[0], "main")) {
23a3f0cb	74	*refs = get_main_ref_store(the_repository);
80f2a609 NTND	75	} else if (skip_prefix(argv[0], "submodule:", &gitdir)) {
	76	struct strbuf sb = STRBUF_INIT;
	77	int ret;
	78
	79	ret = strbuf_git_path_submodule(&sb, gitdir, "objects/");
	80	if (ret)
	81	die("strbuf_git_path_submodule failed: %d", ret);
	82	add_to_alternates_memory(sb.buf);
	83	strbuf_release(&sb);
	84
	85	*refs = get_submodule_ref_store(gitdir);
fa099d23	86	} else if (skip_prefix(argv[0], "worktree:", &gitdir)) {
03f2465b	87	struct worktree p, worktrees = get_worktrees();
fa099d23 NTND	88
	89	for (p = worktrees; *p; p++) {
	90	struct worktree wt = p;
	91
	92	if (!wt->id) {
	93	/* special case for main worktree */
	94	if (!strcmp(gitdir, "main"))
	95	break;
	96	} else if (!strcmp(gitdir, wt->id))
	97	break;
	98	}
	99	if (!*p)
	100	die("no such worktree: %s", gitdir);
	101
	102	refs = get_worktree_ref_store(p);
34e69128	103	free_worktrees(worktrees);
80f2a609 NTND	104	} else
	105	die("unknown backend %s", argv[0]);
	106
	107	if (!*refs)
	108	die("no ref store");
	109
	110	/* consume store-specific optional arguments if needed */
	111
	112	return argv + 1;
	113	}
	114
80f2a609 NTND	115	static int cmd_create_symref(struct ref_store refs, const char *argv)
	116	{
	117	const char refname = notnull(argv++, "refname");
	118	const char target = notnull(argv++, "target");
	119	const char logmsg = argv++;
	120
	121	return refs_create_symref(refs, refname, target, logmsg);
	122	}
	123
cd2d40fb HWN	124	static struct flag_definition transaction_flags[] = {
	125	FLAG_DEF(REF_NO_DEREF),
	126	FLAG_DEF(REF_FORCE_CREATE_REFLOG),
e9706a18	127	FLAG_DEF(REF_SKIP_OID_VERIFICATION),
3c966c7b	128	FLAG_DEF(REF_SKIP_REFNAME_VERIFICATION),
cd2d40fb HWN	129	{ NULL, 0 }
	130	};
	131
80f2a609 NTND	132	static int cmd_delete_refs(struct ref_store refs, const char *argv)
80f2a609 NTND	133	{
cd2d40fb	134	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
64da4199	135	const char msg = argv++;
80f2a609	136	struct string_list refnames = STRING_LIST_INIT_NODUP;
df25a19d	137	int result;
80f2a609 NTND	138
	139	while (*argv)
	140	string_list_append(&refnames, *argv++);
	141
df25a19d HWN	142	result = refs_delete_refs(refs, msg, &refnames, flags);
	143	string_list_clear(&refnames, 0);
	144	return result;
80f2a609 NTND	145	}
	146
	147	static int cmd_rename_ref(struct ref_store refs, const char *argv)
	148	{
	149	const char oldref = notnull(argv++, "oldref");
	150	const char newref = notnull(argv++, "newref");
	151	const char logmsg = argv++;
	152
	153	return refs_rename_ref(refs, oldref, newref, logmsg);
	154	}
	155
	156	static int each_ref(const char refname, const struct object_id oid,
5cf88fd8	157	int flags, void *cb_data UNUSED)
80f2a609 NTND	158	{
	159	printf("%s %s 0x%x\n", oid_to_hex(oid), refname, flags);
	160	return 0;
	161	}
	162
	163	static int cmd_for_each_ref(struct ref_store refs, const char *argv)
	164	{
	165	const char prefix = notnull(argv++, "prefix");
	166
	167	return refs_for_each_ref_in(refs, prefix, each_ref, NULL);
	168	}
	169
59c35fac TB	170	static int cmd_for_each_ref__exclude(struct ref_store refs, const char *argv)
	171	{
	172	const char prefix = notnull(argv++, "prefix");
	173	const char **exclude_patterns = argv;
	174
	175	return refs_for_each_fullref_in(refs, prefix, exclude_patterns, each_ref,
	176	NULL);
	177	}
	178
80f2a609 NTND	179	static int cmd_resolve_ref(struct ref_store refs, const char *argv)
80f2a609 NTND	180	{
0221eb86	181	struct object_id oid = *null_oid();
80f2a609	182	const char refname = notnull(argv++, "refname");
cd2d40fb	183	int resolve_flags = arg_flags(*argv++, "resolve-flags", empty_flags);
80f2a609 NTND	184	int flags;
	185	const char *ref;
	186
f1da24ca	187	ref = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
ce14de03	188	&oid, &flags);
e7e456f5	189	printf("%s %s 0x%x\n", oid_to_hex(&oid), ref ? ref : "(null)", flags);
80f2a609 NTND	190	return ref ? 0 : 1;
	191	}
	192
	193	static int cmd_verify_ref(struct ref_store refs, const char *argv)
	194	{
	195	const char refname = notnull(argv++, "refname");
	196	struct strbuf err = STRBUF_INIT;
	197	int ret;
	198
	199	ret = refs_verify_refname_available(refs, refname, NULL, NULL, &err);
	200	if (err.len)
	201	puts(err.buf);
	202	return ret;
	203	}
	204
31f89839 PS	205	static int each_reflog(const char refname, void cb_data UNUSED)
	206	{
	207	printf("%s\n", refname);
	208	return 0;
	209	}
	210
126e3b3d JK	211	static int cmd_for_each_reflog(struct ref_store *refs,
126e3b3d JK	212	const char **argv UNUSED)
80f2a609	213	{
31f89839	214	return refs_for_each_reflog(refs, each_reflog, NULL);
80f2a609 NTND	215	}
80f2a609 NTND	216
31f89839 PS	217	static int each_reflog_ent(struct object_id old_oid, struct object_id new_oid,
	218	const char *committer, timestamp_t timestamp,
	219	int tz, const char msg, void cb_data UNUSED)
80f2a609	220	{
3474b602 HWN	221	printf("%s %s %s %" PRItime " %+05d%s%s", oid_to_hex(old_oid),
	222	oid_to_hex(new_oid), committer, timestamp, tz,
	223	*msg == '\n' ? "" : "\t", msg);
80f2a609 NTND	224	return 0;
	225	}
	226
	227	static int cmd_for_each_reflog_ent(struct ref_store refs, const char *argv)
	228	{
	229	const char refname = notnull(argv++, "refname");
	230
31f89839	231	return refs_for_each_reflog_ent(refs, refname, each_reflog_ent, refs);
80f2a609 NTND	232	}
	233
	234	static int cmd_for_each_reflog_ent_reverse(struct ref_store refs, const char *argv)
	235	{
	236	const char refname = notnull(argv++, "refname");
	237
31f89839	238	return refs_for_each_reflog_ent_reverse(refs, refname, each_reflog_ent, refs);
80f2a609 NTND	239	}
	240
	241	static int cmd_reflog_exists(struct ref_store refs, const char *argv)
	242	{
	243	const char refname = notnull(argv++, "refname");
	244
	245	return !refs_reflog_exists(refs, refname);
	246	}
	247
	248	static int cmd_create_reflog(struct ref_store refs, const char *argv)
	249	{
	250	const char refname = notnull(argv++, "refname");
80f2a609 NTND	251	struct strbuf err = STRBUF_INIT;
	252	int ret;
	253
7b089120	254	ret = refs_create_reflog(refs, refname, &err);
80f2a609 NTND	255	if (err.len)
	256	puts(err.buf);
	257	return ret;
	258	}
	259
	260	static int cmd_delete_reflog(struct ref_store refs, const char *argv)
	261	{
	262	const char refname = notnull(argv++, "refname");
	263
	264	return refs_delete_reflog(refs, refname);
	265	}
	266
80f2a609 NTND	267	static int cmd_delete_ref(struct ref_store refs, const char *argv)
	268	{
	269	const char msg = notnull(argv++, "msg");
	270	const char refname = notnull(argv++, "refname");
	271	const char sha1_buf = notnull(argv++, "old-sha1");
cd2d40fb	272	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
2616a5e5	273	struct object_id old_oid;
80f2a609	274
2616a5e5	275	if (get_oid_hex(sha1_buf, &old_oid))
57eb3681	276	die("cannot parse %s as %s", sha1_buf, the_hash_algo->name);
80f2a609	277
2616a5e5	278	return refs_delete_ref(refs, msg, refname, &old_oid, flags);
80f2a609 NTND	279	}
	280
	281	static int cmd_update_ref(struct ref_store refs, const char *argv)
	282	{
	283	const char msg = notnull(argv++, "msg");
	284	const char refname = notnull(argv++, "refname");
3c27e2e0	285	const char new_sha1_buf = notnull(argv++, "new-sha1");
80f2a609	286	const char old_sha1_buf = notnull(argv++, "old-sha1");
cd2d40fb	287	unsigned int flags = arg_flags(*argv++, "flags", transaction_flags);
9ddd5b88	288	struct object_id old_oid, *old_oid_ptr = NULL;
ae077771	289	struct object_id new_oid;
80f2a609	290
9ddd5b88 PS	291	if (*old_sha1_buf) {
	292	if (get_oid_hex(old_sha1_buf, &old_oid))
	293	die("cannot parse %s as %s", old_sha1_buf, the_hash_algo->name);
	294	old_oid_ptr = &old_oid;
	295	}
57eb3681 HWN	296	if (get_oid_hex(new_sha1_buf, &new_oid))
57eb3681 HWN	297	die("cannot parse %s as %s", new_sha1_buf, the_hash_algo->name);
80f2a609 NTND	298
80f2a609 NTND	299	return refs_update_ref(refs, msg, refname,
9ddd5b88	300	&new_oid, old_oid_ptr,
80f2a609 NTND	301	flags, UPDATE_REFS_DIE_ON_ERR);
	302	}
	303
	304	struct command {
	305	const char *name;
	306	int (func)(struct ref_store refs, const char **argv);
	307	};
	308
	309	static struct command commands[] = {
80f2a609 NTND	310	{ "create-symref", cmd_create_symref },
	311	{ "delete-refs", cmd_delete_refs },
	312	{ "rename-ref", cmd_rename_ref },
	313	{ "for-each-ref", cmd_for_each_ref },
59c35fac	314	{ "for-each-ref--exclude", cmd_for_each_ref__exclude },
80f2a609 NTND	315	{ "resolve-ref", cmd_resolve_ref },
	316	{ "verify-ref", cmd_verify_ref },
	317	{ "for-each-reflog", cmd_for_each_reflog },
	318	{ "for-each-reflog-ent", cmd_for_each_reflog_ent },
	319	{ "for-each-reflog-ent-reverse", cmd_for_each_reflog_ent_reverse },
	320	{ "reflog-exists", cmd_reflog_exists },
	321	{ "create-reflog", cmd_create_reflog },
	322	{ "delete-reflog", cmd_delete_reflog },
80f2a609 NTND	323	/*
	324	* backend transaction functions can't be tested separately
	325	*/
	326	{ "delete-ref", cmd_delete_ref },
	327	{ "update-ref", cmd_update_ref },
	328	{ NULL, NULL }
	329	};
	330
126e3b3d	331	int cmd__ref_store(int argc UNUSED, const char **argv)
80f2a609 NTND	332	{
	333	struct ref_store *refs;
	334	const char *func;
	335	struct command *cmd;
	336
	337	setup_git_directory();
	338
	339	argv = get_store(argv + 1, &refs);
	340
	341	func = *argv++;
	342	if (!func)
	343	die("ref function required");
	344	for (cmd = commands; cmd->name; cmd++) {
	345	if (!strcmp(func, cmd->name))
	346	return cmd->func(refs, argv);
	347	}
	348	die("unknown function %s", func);
	349	return 0;
	350	}