[thirdparty/git.git] / list-objects-filter-options.c

#include "git-compat-util.h"
#include "alloc.h"
#include "commit.h"
#include "config.h"
#include "gettext.h"
#include "revision.h"
#include "strvec.h"
#include "list-objects.h"
#include "list-objects-filter.h"
#include "list-objects-filter-options.h"
#include "promisor-remote.h"
#include "trace.h"
#include "url.h"
#include "parse-options.h"

static int parse_combine_filter(
	struct list_objects_filter_options *filter_options,
	const char *arg,
	struct strbuf *errbuf);

const char *list_object_filter_config_name(enum list_objects_filter_choice c)
{
	switch (c) {
	case LOFC_DISABLED:
		/* we have no name for "no filter at all" */
		break;
	case LOFC_BLOB_NONE:
		return "blob:none";
	case LOFC_BLOB_LIMIT:
		return "blob:limit";
	case LOFC_TREE_DEPTH:
		return "tree";
	case LOFC_SPARSE_OID:
		return "sparse:oid";
	case LOFC_OBJECT_TYPE:
		return "object:type";
	case LOFC_COMBINE:
		return "combine";
	case LOFC__COUNT:
		/* not a real filter type; just the count of all filters */
		break;
	}
	BUG("list_object_filter_config_name: invalid argument '%d'", c);
}

int gently_parse_list_objects_filter(
	struct list_objects_filter_options *filter_options,
	const char *arg,
	struct strbuf *errbuf)
{
	const char *v0;

	if (!arg)
		return 0;

	if (filter_options->choice)
		BUG("filter_options already populated");

	if (!strcmp(arg, "blob:none")) {
		filter_options->choice = LOFC_BLOB_NONE;
		return 0;

	} else if (skip_prefix(arg, "blob:limit=", &v0)) {
		if (git_parse_ulong(v0, &filter_options->blob_limit_value)) {
			filter_options->choice = LOFC_BLOB_LIMIT;
			return 0;
		}

	} else if (skip_prefix(arg, "tree:", &v0)) {
		if (!git_parse_ulong(v0, &filter_options->tree_exclude_depth)) {
			strbuf_addstr(errbuf, _("expected 'tree:<depth>'"));
			return 1;
		}
		filter_options->choice = LOFC_TREE_DEPTH;
		return 0;

	} else if (skip_prefix(arg, "sparse:oid=", &v0)) {
		filter_options->sparse_oid_name = xstrdup(v0);
		filter_options->choice = LOFC_SPARSE_OID;
		return 0;

	} else if (skip_prefix(arg, "sparse:path=", &v0)) {
		if (errbuf) {
			strbuf_addstr(
				errbuf,
				_("sparse:path filters support has been dropped"));
		}
		return 1;

	} else if (skip_prefix(arg, "object:type=", &v0)) {
		int type = type_from_string_gently(v0, strlen(v0), 1);
		if (type < 0) {
			strbuf_addf(errbuf, _("'%s' for 'object:type=<type>' is "
					      "not a valid object type"), v0);
			return 1;
		}

		filter_options->object_type = type;
		filter_options->choice = LOFC_OBJECT_TYPE;

		return 0;

	} else if (skip_prefix(arg, "combine:", &v0)) {
		return parse_combine_filter(filter_options, v0, errbuf);

	}
	/*
	 * Please update _git_fetch() in git-completion.bash when you
	 * add new filters
	 */

	strbuf_addf(errbuf, _("invalid filter-spec '%s'"), arg);

	list_objects_filter_init(filter_options);
	return 1;
}

static const char *RESERVED_NON_WS = "~`!@#$^&*()[]{}\\;'\",<>?";

static int has_reserved_character(
	struct strbuf *sub_spec, struct strbuf *errbuf)
{
	const char *c = sub_spec->buf;
	while (*c) {
		if (*c <= ' ' || strchr(RESERVED_NON_WS, *c)) {
			strbuf_addf(
				errbuf,
				_("must escape char in sub-filter-spec: '%c'"),
				*c);
			return 1;
		}
		c++;
	}

	return 0;
}

static int parse_combine_subfilter(
	struct list_objects_filter_options *filter_options,
	struct strbuf *subspec,
	struct strbuf *errbuf)
{
	size_t new_index = filter_options->sub_nr;
	char *decoded;
	int result;

	ALLOC_GROW_BY(filter_options->sub, filter_options->sub_nr, 1,
		      filter_options->sub_alloc);
	list_objects_filter_init(&filter_options->sub[new_index]);

	decoded = url_percent_decode(subspec->buf);

	result = has_reserved_character(subspec, errbuf) ||
		gently_parse_list_objects_filter(
			&filter_options->sub[new_index], decoded, errbuf);

	free(decoded);
	return result;
}

static int parse_combine_filter(
	struct list_objects_filter_options *filter_options,
	const char *arg,
	struct strbuf *errbuf)
{
	struct strbuf **subspecs = strbuf_split_str(arg, '+', 0);
	size_t sub;
	int result = 0;

	if (!subspecs[0]) {
		strbuf_addstr(errbuf, _("expected something after combine:"));
		result = 1;
		goto cleanup;
	}

	for (sub = 0; subspecs[sub] && !result; sub++) {
		if (subspecs[sub + 1]) {
			/*
			 * This is not the last subspec. Remove trailing "+" so
			 * we can parse it.
			 */
			size_t last = subspecs[sub]->len - 1;
			assert(subspecs[sub]->buf[last] == '+');
			strbuf_remove(subspecs[sub], last, 1);
		}
		result = parse_combine_subfilter(
			filter_options, subspecs[sub], errbuf);
	}

	filter_options->choice = LOFC_COMBINE;

cleanup:
	strbuf_list_free(subspecs);
	if (result)
		list_objects_filter_release(filter_options);
	return result;
}

static int allow_unencoded(char ch)
{
	if (ch <= ' ' || ch == '%' || ch == '+')
		return 0;
	return !strchr(RESERVED_NON_WS, ch);
}

static void filter_spec_append_urlencode(
	struct list_objects_filter_options *filter, const char *raw)
{
	size_t orig_len = filter->filter_spec.len;
	strbuf_addstr_urlencode(&filter->filter_spec, raw, allow_unencoded);
	trace_printf("Add to combine filter-spec: %s\n",
		     filter->filter_spec.buf + orig_len);
}

/*
 * Changes filter_options into an equivalent LOFC_COMBINE filter options
 * instance. Does not do anything if filter_options is already LOFC_COMBINE.
 */
static void transform_to_combine_type(
	struct list_objects_filter_options *filter_options)
{
	assert(filter_options->choice);
	if (filter_options->choice == LOFC_COMBINE)
		return;
	{
		const int initial_sub_alloc = 2;
		struct list_objects_filter_options *sub_array =
			xcalloc(initial_sub_alloc, sizeof(*sub_array));
		sub_array[0] = *filter_options;
		list_objects_filter_init(filter_options);
		filter_options->sub = sub_array;
		filter_options->sub_alloc = initial_sub_alloc;
	}
	filter_options->sub_nr = 1;
	filter_options->choice = LOFC_COMBINE;
	strbuf_addstr(&filter_options->filter_spec, "combine:");
	filter_spec_append_urlencode(
		filter_options,
		list_objects_filter_spec(&filter_options->sub[0]));
	/*
	 * We don't need the filter_spec strings for subfilter specs, only the
	 * top level.
	 */
	strbuf_release(&filter_options->sub[0].filter_spec);
}

void list_objects_filter_die_if_populated(
	struct list_objects_filter_options *filter_options)
{
	if (filter_options->choice)
		die(_("multiple filter-specs cannot be combined"));
}

void parse_list_objects_filter(
	struct list_objects_filter_options *filter_options,
	const char *arg)
{
	struct strbuf errbuf = STRBUF_INIT;
	int parse_error;

	if (!filter_options->filter_spec.buf)
		BUG("filter_options not properly initialized");

	if (!filter_options->choice) {
		strbuf_addstr(&filter_options->filter_spec, arg);

		parse_error = gently_parse_list_objects_filter(
			filter_options, arg, &errbuf);
	} else {
		struct list_objects_filter_options *sub;

		/*
		 * Make filter_options an LOFC_COMBINE spec so we can trivially
		 * add subspecs to it.
		 */
		transform_to_combine_type(filter_options);

		strbuf_addch(&filter_options->filter_spec, '+');
		filter_spec_append_urlencode(filter_options, arg);
		ALLOC_GROW_BY(filter_options->sub, filter_options->sub_nr, 1,
			      filter_options->sub_alloc);
		sub = &filter_options->sub[filter_options->sub_nr - 1];

		list_objects_filter_init(sub);
		parse_error = gently_parse_list_objects_filter(sub, arg,
							       &errbuf);
	}
	if (parse_error)
		die("%s", errbuf.buf);
}

int opt_parse_list_objects_filter(const struct option *opt,
				  const char *arg, int unset)
{
	struct list_objects_filter_options *filter_options = opt->value;

	if (unset || !arg)
		list_objects_filter_set_no_filter(filter_options);
	else
		parse_list_objects_filter(filter_options, arg);
	return 0;
}

const char *list_objects_filter_spec(struct list_objects_filter_options *filter)
{
	if (!filter->filter_spec.len)
		BUG("no filter_spec available for this filter");
	return filter->filter_spec.buf;
}

const char *expand_list_objects_filter_spec(
	struct list_objects_filter_options *filter)
{
	if (filter->choice == LOFC_BLOB_LIMIT) {
		strbuf_release(&filter->filter_spec);
		strbuf_addf(&filter->filter_spec, "blob:limit=%lu",
			    filter->blob_limit_value);
	}

	return list_objects_filter_spec(filter);
}

void list_objects_filter_release(
	struct list_objects_filter_options *filter_options)
{
	size_t sub;

	if (!filter_options)
		return;
	strbuf_release(&filter_options->filter_spec);
	free(filter_options->sparse_oid_name);
	for (sub = 0; sub < filter_options->sub_nr; sub++)
		list_objects_filter_release(&filter_options->sub[sub]);
	free(filter_options->sub);
	list_objects_filter_init(filter_options);
}

void partial_clone_register(
	const char *remote,
	struct list_objects_filter_options *filter_options)
{
	struct promisor_remote *promisor_remote;
	char *cfg_name;
	char *filter_name;

	/* Check if it is already registered */
	if ((promisor_remote = promisor_remote_find(remote))) {
		if (promisor_remote->partial_clone_filter)
			/*
			 * Remote is already registered and a filter is already
			 * set, so we don't need to do anything here.
			 */
			return;
	} else {
		if (upgrade_repository_format(1) < 0)
			die(_("unable to upgrade repository format to support partial clone"));

		/* Add promisor config for the remote */
		cfg_name = xstrfmt("remote.%s.promisor", remote);
		git_config_set(cfg_name, "true");
		free(cfg_name);
	}

	/*
	 * Record the initial filter-spec in the config as
	 * the default for subsequent fetches from this remote.
	 */
	filter_name = xstrfmt("remote.%s.partialclonefilter", remote);
	/* NEEDSWORK: 'expand' result leaking??? */
	git_config_set(filter_name,
		       expand_list_objects_filter_spec(filter_options));
	free(filter_name);

	/* Make sure the config info are reset */
	promisor_remote_reinit();
}

void partial_clone_get_default_filter_spec(
	struct list_objects_filter_options *filter_options,
	const char *remote)
{
	struct promisor_remote *promisor = promisor_remote_find(remote);
	struct strbuf errbuf = STRBUF_INIT;

	/*
	 * Parse default value, but silently ignore it if it is invalid.
	 */
	if (!promisor || !promisor->partial_clone_filter)
		return;

	strbuf_addstr(&filter_options->filter_spec,
		      promisor->partial_clone_filter);
	gently_parse_list_objects_filter(filter_options,
					 promisor->partial_clone_filter,
					 &errbuf);
	strbuf_release(&errbuf);
}

void list_objects_filter_copy(
	struct list_objects_filter_options *dest,
	const struct list_objects_filter_options *src)
{
	int i;

	/* Copy everything. We will overwrite the pointers shortly. */
	memcpy(dest, src, sizeof(struct list_objects_filter_options));

	strbuf_init(&dest->filter_spec, 0);
	strbuf_addbuf(&dest->filter_spec, &src->filter_spec);
	dest->sparse_oid_name = xstrdup_or_null(src->sparse_oid_name);

	ALLOC_ARRAY(dest->sub, dest->sub_alloc);
	for (i = 0; i < src->sub_nr; i++)
		list_objects_filter_copy(&dest->sub[i], &src->sub[i]);
}

void list_objects_filter_init(struct list_objects_filter_options *filter_options)
{
	struct list_objects_filter_options blank = LIST_OBJECTS_FILTER_INIT;
	memcpy(filter_options, &blank, sizeof(*filter_options));
}
Commit	Line	Data
36bf1958 EN	1	#include "git-compat-util.h"
36bf1958 EN	2	#include "alloc.h"
25ec7bca JH	3	#include "commit.h"
25ec7bca JH	4	#include "config.h"
36bf1958	5	#include "gettext.h"
25ec7bca	6	#include "revision.h"
dbbcd44f	7	#include "strvec.h"
25ec7bca JH	8	#include "list-objects.h"
	9	#include "list-objects-filter.h"
	10	#include "list-objects-filter-options.h"
b14ed5ad	11	#include "promisor-remote.h"
489fc9ee	12	#include "trace.h"
e987df5f	13	#include "url.h"
49fd5511	14	#include "parse-options.h"
e987df5f MD	15
	16	static int parse_combine_filter(
	17	struct list_objects_filter_options *filter_options,
	18	const char *arg,
	19	struct strbuf *errbuf);
25ec7bca	20
b9ea2147 TB	21	const char *list_object_filter_config_name(enum list_objects_filter_choice c)
	22	{
	23	switch (c) {
	24	case LOFC_DISABLED:
	25	/* we have no name for "no filter at all" */
	26	break;
	27	case LOFC_BLOB_NONE:
	28	return "blob:none";
	29	case LOFC_BLOB_LIMIT:
	30	return "blob:limit";
	31	case LOFC_TREE_DEPTH:
	32	return "tree";
	33	case LOFC_SPARSE_OID:
	34	return "sparse:oid";
b0c42a53 PS	35	case LOFC_OBJECT_TYPE:
b0c42a53 PS	36	return "object:type";
b9ea2147 TB	37	case LOFC_COMBINE:
	38	return "combine";
	39	case LOFC__COUNT:
	40	/* not a real filter type; just the count of all filters */
	41	break;
	42	}
5a923bb1	43	BUG("list_object_filter_config_name: invalid argument '%d'", c);
b9ea2147 TB	44	}
b9ea2147 TB	45
105c6f14	46	int gently_parse_list_objects_filter(
1e1e39b3 JH	47	struct list_objects_filter_options *filter_options,
	48	const char *arg,
	49	struct strbuf *errbuf)
25ec7bca JH	50	{
	51	const char *v0;
	52
fa3d1b63 CC	53	if (!arg)
	54	return 0;
	55
f56f7642 MD	56	if (filter_options->choice)
f56f7642 MD	57	BUG("filter_options already populated");
25ec7bca JH	58
	59	if (!strcmp(arg, "blob:none")) {
	60	filter_options->choice = LOFC_BLOB_NONE;
	61	return 0;
25ec7bca	62
1e1e39b3 JH	63	} else if (skip_prefix(arg, "blob:limit=", &v0)) {
	64	if (git_parse_ulong(v0, &filter_options->blob_limit_value)) {
	65	filter_options->choice = LOFC_BLOB_LIMIT;
	66	return 0;
	67	}
25ec7bca	68
bc5975d2	69	} else if (skip_prefix(arg, "tree:", &v0)) {
c813a7c3	70	if (!git_parse_ulong(v0, &filter_options->tree_exclude_depth)) {
842b0051	71	strbuf_addstr(errbuf, _("expected 'tree:<depth>'"));
bc5975d2 MD	72	return 1;
bc5975d2 MD	73	}
c813a7c3	74	filter_options->choice = LOFC_TREE_DEPTH;
bc5975d2 MD	75	return 0;
bc5975d2 MD	76
1e1e39b3	77	} else if (skip_prefix(arg, "sparse:oid=", &v0)) {
4c96a775	78	filter_options->sparse_oid_name = xstrdup(v0);
25ec7bca JH	79	filter_options->choice = LOFC_SPARSE_OID;
25ec7bca JH	80	return 0;
25ec7bca	81
1e1e39b3	82	} else if (skip_prefix(arg, "sparse:path=", &v0)) {
e693237e CC	83	if (errbuf) {
	84	strbuf_addstr(
	85	errbuf,
	86	_("sparse:path filters support has been dropped"));
	87	}
	88	return 1;
e987df5f	89
b0c42a53 PS	90	} else if (skip_prefix(arg, "object:type=", &v0)) {
	91	int type = type_from_string_gently(v0, strlen(v0), 1);
	92	if (type < 0) {
225f7fa8	93	strbuf_addf(errbuf, _("'%s' for 'object:type=<type>' is "
b0c42a53 PS	94	"not a valid object type"), v0);
	95	return 1;
	96	}
	97
	98	filter_options->object_type = type;
	99	filter_options->choice = LOFC_OBJECT_TYPE;
	100
	101	return 0;
	102
e987df5f MD	103	} else if (skip_prefix(arg, "combine:", &v0)) {
	104	return parse_combine_filter(filter_options, v0, errbuf);
	105
25ec7bca	106	}
5a59a230 NTND	107	/*
	108	* Please update _git_fetch() in git-completion.bash when you
	109	* add new filters
	110	*/
25ec7bca	111
842b0051	112	strbuf_addf(errbuf, _("invalid filter-spec '%s'"), arg);
cc0b05a4	113
2a01bded	114	list_objects_filter_init(filter_options);
1e1e39b3 JH	115	return 1;
	116	}
	117
e987df5f MD	118	static const char RESERVED_NON_WS = "~`!@#$^&()[]{}\\;'\",<>?";
	119
	120	static int has_reserved_character(
	121	struct strbuf sub_spec, struct strbuf errbuf)
1e1e39b3	122	{
e987df5f MD	123	const char *c = sub_spec->buf;
	124	while (*c) {
	125	if (c <= ' ' \|\| strchr(RESERVED_NON_WS, c)) {
	126	strbuf_addf(
	127	errbuf,
	128	_("must escape char in sub-filter-spec: '%c'"),
	129	*c);
	130	return 1;
	131	}
	132	c++;
	133	}
	134
25ec7bca JH	135	return 0;
	136	}
	137
e987df5f MD	138	static int parse_combine_subfilter(
	139	struct list_objects_filter_options *filter_options,
	140	struct strbuf *subspec,
	141	struct strbuf *errbuf)
	142	{
5a133e8a	143	size_t new_index = filter_options->sub_nr;
e987df5f MD	144	char *decoded;
	145	int result;
	146
5a133e8a MD	147	ALLOC_GROW_BY(filter_options->sub, filter_options->sub_nr, 1,
5a133e8a MD	148	filter_options->sub_alloc);
4eaed7c2	149	list_objects_filter_init(&filter_options->sub[new_index]);
e987df5f MD	150
	151	decoded = url_percent_decode(subspec->buf);
	152
	153	result = has_reserved_character(subspec, errbuf) \|\|
	154	gently_parse_list_objects_filter(
	155	&filter_options->sub[new_index], decoded, errbuf);
	156
	157	free(decoded);
	158	return result;
	159	}
	160
	161	static int parse_combine_filter(
	162	struct list_objects_filter_options *filter_options,
	163	const char *arg,
	164	struct strbuf *errbuf)
	165	{
	166	struct strbuf **subspecs = strbuf_split_str(arg, '+', 0);
	167	size_t sub;
	168	int result = 0;
	169
	170	if (!subspecs[0]) {
	171	strbuf_addstr(errbuf, _("expected something after combine:"));
	172	result = 1;
	173	goto cleanup;
	174	}
	175
	176	for (sub = 0; subspecs[sub] && !result; sub++) {
	177	if (subspecs[sub + 1]) {
	178	/*
	179	* This is not the last subspec. Remove trailing "+" so
	180	* we can parse it.
	181	*/
	182	size_t last = subspecs[sub]->len - 1;
	183	assert(subspecs[sub]->buf[last] == '+');
	184	strbuf_remove(subspecs[sub], last, 1);
	185	}
	186	result = parse_combine_subfilter(
	187	filter_options, subspecs[sub], errbuf);
	188	}
	189
	190	filter_options->choice = LOFC_COMBINE;
	191
	192	cleanup:
	193	strbuf_list_free(subspecs);
e40d9064	194	if (result)
e987df5f	195	list_objects_filter_release(filter_options);
e987df5f MD	196	return result;
	197	}
	198
489fc9ee MD	199	static int allow_unencoded(char ch)
	200	{
	201	if (ch <= ' ' \|\| ch == '%' \|\| ch == '+')
	202	return 0;
	203	return !strchr(RESERVED_NON_WS, ch);
	204	}
	205
	206	static void filter_spec_append_urlencode(
	207	struct list_objects_filter_options filter, const char raw)
1e1e39b3	208	{
c54980ab JK	209	size_t orig_len = filter->filter_spec.len;
	210	strbuf_addstr_urlencode(&filter->filter_spec, raw, allow_unencoded);
	211	trace_printf("Add to combine filter-spec: %s\n",
	212	filter->filter_spec.buf + orig_len);
489fc9ee MD	213	}
	214
	215	/*
	216	* Changes filter_options into an equivalent LOFC_COMBINE filter options
	217	* instance. Does not do anything if filter_options is already LOFC_COMBINE.
	218	*/
	219	static void transform_to_combine_type(
	220	struct list_objects_filter_options *filter_options)
	221	{
	222	assert(filter_options->choice);
	223	if (filter_options->choice == LOFC_COMBINE)
	224	return;
	225	{
	226	const int initial_sub_alloc = 2;
	227	struct list_objects_filter_options *sub_array =
	228	xcalloc(initial_sub_alloc, sizeof(*sub_array));
	229	sub_array[0] = *filter_options;
2a01bded	230	list_objects_filter_init(filter_options);
489fc9ee MD	231	filter_options->sub = sub_array;
	232	filter_options->sub_alloc = initial_sub_alloc;
	233	}
	234	filter_options->sub_nr = 1;
	235	filter_options->choice = LOFC_COMBINE;
c54980ab	236	strbuf_addstr(&filter_options->filter_spec, "combine:");
489fc9ee MD	237	filter_spec_append_urlencode(
	238	filter_options,
	239	list_objects_filter_spec(&filter_options->sub[0]));
	240	/*
	241	* We don't need the filter_spec strings for subfilter specs, only the
	242	* top level.
	243	*/
c54980ab	244	strbuf_release(&filter_options->sub[0].filter_spec);
489fc9ee MD	245	}
	246
	247	void list_objects_filter_die_if_populated(
	248	struct list_objects_filter_options *filter_options)
	249	{
f56f7642 MD	250	if (filter_options->choice)
f56f7642 MD	251	die(_("multiple filter-specs cannot be combined"));
489fc9ee MD	252	}
489fc9ee MD	253
90d21f9e	254	void parse_list_objects_filter(
489fc9ee MD	255	struct list_objects_filter_options *filter_options,
	256	const char *arg)
	257	{
	258	struct strbuf errbuf = STRBUF_INIT;
	259	int parse_error;
	260
c54980ab	261	if (!filter_options->filter_spec.buf)
2a01bded	262	BUG("filter_options not properly initialized");
7e2619d8	263
489fc9ee	264	if (!filter_options->choice) {
c54980ab	265	strbuf_addstr(&filter_options->filter_spec, arg);
489fc9ee MD	266
	267	parse_error = gently_parse_list_objects_filter(
	268	filter_options, arg, &errbuf);
	269	} else {
4eaed7c2 JK	270	struct list_objects_filter_options *sub;
4eaed7c2 JK	271
489fc9ee MD	272	/*
	273	* Make filter_options an LOFC_COMBINE spec so we can trivially
	274	* add subspecs to it.
	275	*/
	276	transform_to_combine_type(filter_options);
	277
c54980ab	278	strbuf_addch(&filter_options->filter_spec, '+');
489fc9ee	279	filter_spec_append_urlencode(filter_options, arg);
5a133e8a MD	280	ALLOC_GROW_BY(filter_options->sub, filter_options->sub_nr, 1,
5a133e8a MD	281	filter_options->sub_alloc);
4eaed7c2	282	sub = &filter_options->sub[filter_options->sub_nr - 1];
489fc9ee	283
4eaed7c2 JK	284	list_objects_filter_init(sub);
	285	parse_error = gently_parse_list_objects_filter(sub, arg,
	286	&errbuf);
489fc9ee MD	287	}
	288	if (parse_error)
	289	die("%s", errbuf.buf);
25ec7bca JH	290	}
	291
	292	int opt_parse_list_objects_filter(const struct option *opt,
	293	const char *arg, int unset)
	294	{
	295	struct list_objects_filter_options *filter_options = opt->value;
	296
90d21f9e	297	if (unset \|\| !arg)
aa57b871	298	list_objects_filter_set_no_filter(filter_options);
90d21f9e MD	299	else
	300	parse_list_objects_filter(filter_options, arg);
	301	return 0;
25ec7bca	302	}
4875c979	303
cf9ceb5a	304	const char list_objects_filter_spec(struct list_objects_filter_options filter)
87c2d9d3	305	{
c54980ab	306	if (!filter->filter_spec.len)
cf9ceb5a	307	BUG("no filter_spec available for this filter");
c54980ab	308	return filter->filter_spec.buf;
25ec7bca	309	}
4875c979	310
cf9ceb5a MD	311	const char *expand_list_objects_filter_spec(
cf9ceb5a MD	312	struct list_objects_filter_options *filter)
87c2d9d3	313	{
cf9ceb5a	314	if (filter->choice == LOFC_BLOB_LIMIT) {
c54980ab JK	315	strbuf_release(&filter->filter_spec);
c54980ab JK	316	strbuf_addf(&filter->filter_spec, "blob:limit=%lu",
87c2d9d3	317	filter->blob_limit_value);
cf9ceb5a MD	318	}
	319
	320	return list_objects_filter_spec(filter);
87c2d9d3 JS	321	}
87c2d9d3 JS	322
4875c979 JH	323	void list_objects_filter_release(
	324	struct list_objects_filter_options *filter_options)
	325	{
e987df5f MD	326	size_t sub;
	327
	328	if (!filter_options)
	329	return;
c54980ab	330	strbuf_release(&filter_options->filter_spec);
4c96a775	331	free(filter_options->sparse_oid_name);
e987df5f MD	332	for (sub = 0; sub < filter_options->sub_nr; sub++)
	333	list_objects_filter_release(&filter_options->sub[sub]);
	334	free(filter_options->sub);
2a01bded	335	list_objects_filter_init(filter_options);
4875c979	336	}
1e1e39b3 JH	337
	338	void partial_clone_register(
	339	const char *remote,
cf9ceb5a	340	struct list_objects_filter_options *filter_options)
1e1e39b3	341	{
23547c40	342	struct promisor_remote *promisor_remote;
b14ed5ad	343	char *cfg_name;
fa3d1b63	344	char *filter_name;
1e1e39b3	345
b14ed5ad	346	/* Check if it is already registered */
23547c40 JT	347	if ((promisor_remote = promisor_remote_find(remote))) {
	348	if (promisor_remote->partial_clone_filter)
	349	/*
	350	* Remote is already registered and a filter is already
	351	* set, so we don't need to do anything here.
	352	*/
	353	return;
	354	} else {
16af5f1a XL	355	if (upgrade_repository_format(1) < 0)
16af5f1a XL	356	die(_("unable to upgrade repository format to support partial clone"));
1e1e39b3	357
b14ed5ad CC	358	/* Add promisor config for the remote */
	359	cfg_name = xstrfmt("remote.%s.promisor", remote);
	360	git_config_set(cfg_name, "true");
	361	free(cfg_name);
	362	}
1e1e39b3 JH	363
	364	/*
	365	* Record the initial filter-spec in the config as
	366	* the default for subsequent fetches from this remote.
	367	*/
fa3d1b63	368	filter_name = xstrfmt("remote.%s.partialclonefilter", remote);
627b8268 JH	369	/* NEEDSWORK: 'expand' result leaking??? */
	370	git_config_set(filter_name,
	371	expand_list_objects_filter_spec(filter_options));
fa3d1b63	372	free(filter_name);
b14ed5ad CC	373
	374	/* Make sure the config info are reset */
	375	promisor_remote_reinit();
1e1e39b3 JH	376	}
	377
	378	void partial_clone_get_default_filter_spec(
fa3d1b63 CC	379	struct list_objects_filter_options *filter_options,
fa3d1b63 CC	380	const char *remote)
1e1e39b3	381	{
fa3d1b63	382	struct promisor_remote *promisor = promisor_remote_find(remote);
842b0051	383	struct strbuf errbuf = STRBUF_INIT;
fa3d1b63	384
1e1e39b3 JH	385	/*
	386	* Parse default value, but silently ignore it if it is invalid.
	387	*/
aff4bfcf	388	if (!promisor \|\| !promisor->partial_clone_filter)
cac1137d	389	return;
e987df5f	390
c54980ab JK	391	strbuf_addstr(&filter_options->filter_spec,
c54980ab JK	392	promisor->partial_clone_filter);
1e1e39b3	393	gently_parse_list_objects_filter(filter_options,
627b8268	394	promisor->partial_clone_filter,
842b0051 MD	395	&errbuf);
842b0051 MD	396	strbuf_release(&errbuf);
1e1e39b3	397	}
4a4c3f9b DS	398
	399	void list_objects_filter_copy(
	400	struct list_objects_filter_options *dest,
	401	const struct list_objects_filter_options *src)
	402	{
	403	int i;
4a4c3f9b DS	404
	405	/* Copy everything. We will overwrite the pointers shortly. */
	406	memcpy(dest, src, sizeof(struct list_objects_filter_options));
	407
c54980ab JK	408	strbuf_init(&dest->filter_spec, 0);
c54980ab JK	409	strbuf_addbuf(&dest->filter_spec, &src->filter_spec);
3fbfbbb7	410	dest->sparse_oid_name = xstrdup_or_null(src->sparse_oid_name);
4a4c3f9b DS	411
	412	ALLOC_ARRAY(dest->sub, dest->sub_alloc);
	413	for (i = 0; i < src->sub_nr; i++)
	414	list_objects_filter_copy(&dest->sub[i], &src->sub[i]);
	415	}
2a01bded JK	416
	417	void list_objects_filter_init(struct list_objects_filter_options *filter_options)
	418	{
	419	struct list_objects_filter_options blank = LIST_OBJECTS_FILTER_INIT;
	420	memcpy(filter_options, &blank, sizeof(*filter_options));
	421	}