[thirdparty/git.git] / builtin / sparse-checkout.c

#include "builtin.h"
#include "config.h"
#include "dir.h"
#include "parse-options.h"
#include "pathspec.h"
#include "repository.h"
#include "run-command.h"
#include "strbuf.h"
#include "string-list.h"
#include "cache.h"
#include "cache-tree.h"
#include "lockfile.h"
#include "resolve-undo.h"
#include "unpack-trees.h"
#include "wt-status.h"

static const char *empty_base = "";

static char const * const builtin_sparse_checkout_usage[] = {
	N_("git sparse-checkout (init|list|set|disable) <options>"),
	NULL
};

static char *get_sparse_checkout_filename(void)
{
	return git_pathdup("info/sparse-checkout");
}

static void write_patterns_to_file(FILE *fp, struct pattern_list *pl)
{
	int i;

	for (i = 0; i < pl->nr; i++) {
		struct path_pattern *p = pl->patterns[i];

		if (p->flags & PATTERN_FLAG_NEGATIVE)
			fprintf(fp, "!");

		fprintf(fp, "%s", p->pattern);

		if (p->flags & PATTERN_FLAG_MUSTBEDIR)
			fprintf(fp, "/");

		fprintf(fp, "\n");
	}
}

static int sparse_checkout_list(int argc, const char **argv)
{
	struct pattern_list pl;
	char *sparse_filename;
	int res;

	memset(&pl, 0, sizeof(pl));

	pl.use_cone_patterns = core_sparse_checkout_cone;

	sparse_filename = get_sparse_checkout_filename();
	res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL);
	free(sparse_filename);

	if (res < 0) {
		warning(_("this worktree is not sparse (sparse-checkout file may not exist)"));
		return 0;
	}

	if (pl.use_cone_patterns) {
		int i;
		struct pattern_entry *pe;
		struct hashmap_iter iter;
		struct string_list sl = STRING_LIST_INIT_DUP;

		hashmap_for_each_entry(&pl.recursive_hashmap, &iter, pe, ent) {
			/* pe->pattern starts with "/", skip it */
			string_list_insert(&sl, pe->pattern + 1);
		}

		string_list_sort(&sl);

		for (i = 0; i < sl.nr; i++)
			printf("%s\n", sl.items[i].string);

		return 0;
	}

	write_patterns_to_file(stdout, &pl);
	clear_pattern_list(&pl);

	return 0;
}

static int update_working_directory(struct pattern_list *pl)
{
	int result = 0;
	struct unpack_trees_options o;
	struct lock_file lock_file = LOCK_INIT;
	struct object_id oid;
	struct tree *tree;
	struct tree_desc t;
	struct repository *r = the_repository;

	if (repo_read_index_unmerged(r))
		die(_("you need to resolve your current index first"));

	if (get_oid("HEAD", &oid))
		return 0;

	tree = parse_tree_indirect(&oid);
	parse_tree(tree);
	init_tree_desc(&t, tree->buffer, tree->size);

	memset(&o, 0, sizeof(o));
	o.verbose_update = isatty(2);
	o.merge = 1;
	o.update = 1;
	o.fn = oneway_merge;
	o.head_idx = -1;
	o.src_index = r->index;
	o.dst_index = r->index;
	o.skip_sparse_checkout = 0;
	o.pl = pl;
	o.keep_pattern_list = !!pl;

	resolve_undo_clear_index(r->index);
	setup_work_tree();

	cache_tree_free(&r->index->cache_tree);

	repo_hold_locked_index(r, &lock_file, LOCK_DIE_ON_ERROR);

	core_apply_sparse_checkout = 1;
	result = unpack_trees(1, &t, &o);

	if (!result) {
		prime_cache_tree(r, r->index, tree);
		write_locked_index(r->index, &lock_file, COMMIT_LOCK);
	} else
		rollback_lock_file(&lock_file);

	return result;
}

static void write_cone_to_file(FILE *fp, struct pattern_list *pl)
{
	int i;
	struct pattern_entry *pe;
	struct hashmap_iter iter;
	struct string_list sl = STRING_LIST_INIT_DUP;
	struct strbuf parent_pattern = STRBUF_INIT;

	hashmap_for_each_entry(&pl->parent_hashmap, &iter, pe, ent) {
		if (hashmap_get_entry(&pl->recursive_hashmap, pe, ent, NULL))
			continue;

		if (!hashmap_contains_parent(&pl->recursive_hashmap,
					     pe->pattern,
					     &parent_pattern))
			string_list_insert(&sl, pe->pattern);
	}

	string_list_sort(&sl);
	string_list_remove_duplicates(&sl, 0);

	fprintf(fp, "/*\n!/*/\n");

	for (i = 0; i < sl.nr; i++) {
		char *pattern = sl.items[i].string;

		if (strlen(pattern))
			fprintf(fp, "%s/\n!%s/*/\n", pattern, pattern);
	}

	string_list_clear(&sl, 0);

	hashmap_for_each_entry(&pl->recursive_hashmap, &iter, pe, ent) {
		if (!hashmap_contains_parent(&pl->recursive_hashmap,
					     pe->pattern,
					     &parent_pattern))
			string_list_insert(&sl, pe->pattern);
	}

	strbuf_release(&parent_pattern);

	string_list_sort(&sl);
	string_list_remove_duplicates(&sl, 0);

	for (i = 0; i < sl.nr; i++) {
		char *pattern = sl.items[i].string;
		fprintf(fp, "%s/\n", pattern);
	}
}

static int write_patterns_and_update(struct pattern_list *pl)
{
	char *sparse_filename;
	FILE *fp;
	int fd;
	struct lock_file lk = LOCK_INIT;
	int result;

	sparse_filename = get_sparse_checkout_filename();

	if (safe_create_leading_directories(sparse_filename))
		die(_("failed to create directory for sparse-checkout file"));

	fd = hold_lock_file_for_update(&lk, sparse_filename,
				      LOCK_DIE_ON_ERROR);

	result = update_working_directory(pl);
	if (result) {
		rollback_lock_file(&lk);
		free(sparse_filename);
		clear_pattern_list(pl);
		update_working_directory(NULL);
		return result;
	}

	fp = xfdopen(fd, "w");

	if (core_sparse_checkout_cone)
		write_cone_to_file(fp, pl);
	else
		write_patterns_to_file(fp, pl);

	fflush(fp);
	commit_lock_file(&lk);

	free(sparse_filename);
	clear_pattern_list(pl);

	return 0;
}

enum sparse_checkout_mode {
	MODE_NO_PATTERNS = 0,
	MODE_ALL_PATTERNS = 1,
	MODE_CONE_PATTERNS = 2,
};

static int set_config(enum sparse_checkout_mode mode)
{
	const char *config_path;

	if (git_config_set_gently("extensions.worktreeConfig", "true")) {
		error(_("failed to set extensions.worktreeConfig setting"));
		return 1;
	}

	config_path = git_path("config.worktree");
	git_config_set_in_file_gently(config_path,
				      "core.sparseCheckout",
				      mode ? "true" : NULL);

	git_config_set_in_file_gently(config_path,
				      "core.sparseCheckoutCone",
				      mode == MODE_CONE_PATTERNS ? "true" : NULL);

	return 0;
}

static char const * const builtin_sparse_checkout_init_usage[] = {
	N_("git sparse-checkout init [--cone]"),
	NULL
};

static struct sparse_checkout_init_opts {
	int cone_mode;
} init_opts;

static int sparse_checkout_init(int argc, const char **argv)
{
	struct pattern_list pl;
	char *sparse_filename;
	int res;
	struct object_id oid;
	int mode;
	struct strbuf pattern = STRBUF_INIT;

	static struct option builtin_sparse_checkout_init_options[] = {
		OPT_BOOL(0, "cone", &init_opts.cone_mode,
			 N_("initialize the sparse-checkout in cone mode")),
		OPT_END(),
	};

	repo_read_index(the_repository);
	require_clean_work_tree(the_repository,
				N_("initialize sparse-checkout"), NULL, 1, 0);

	argc = parse_options(argc, argv, NULL,
			     builtin_sparse_checkout_init_options,
			     builtin_sparse_checkout_init_usage, 0);

	if (init_opts.cone_mode) {
		mode = MODE_CONE_PATTERNS;
		core_sparse_checkout_cone = 1;
	} else
		mode = MODE_ALL_PATTERNS;

	if (set_config(mode))
		return 1;

	memset(&pl, 0, sizeof(pl));

	sparse_filename = get_sparse_checkout_filename();
	res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL);

	/* If we already have a sparse-checkout file, use it. */
	if (res >= 0) {
		free(sparse_filename);
		core_apply_sparse_checkout = 1;
		return update_working_directory(NULL);
	}

	if (get_oid("HEAD", &oid)) {
		FILE *fp;

		/* assume we are in a fresh repo, but update the sparse-checkout file */
		fp = xfopen(sparse_filename, "w");
		if (!fp)
			die(_("failed to open '%s'"), sparse_filename);

		free(sparse_filename);
		fprintf(fp, "/*\n!/*/\n");
		fclose(fp);
		return 0;
	}

	strbuf_addstr(&pattern, "/*");
	add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
	strbuf_addstr(&pattern, "!/*/");
	add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);

	return write_patterns_and_update(&pl);
}

static void insert_recursive_pattern(struct pattern_list *pl, struct strbuf *path)
{
	struct pattern_entry *e = xmalloc(sizeof(*e));
	e->patternlen = path->len;
	e->pattern = strbuf_detach(path, NULL);
	hashmap_entry_init(&e->ent,
			   ignore_case ?
			   strihash(e->pattern) :
			   strhash(e->pattern));

	hashmap_add(&pl->recursive_hashmap, &e->ent);

	while (e->patternlen) {
		char *slash = strrchr(e->pattern, '/');
		char *oldpattern = e->pattern;
		size_t newlen;

		if (slash == e->pattern)
			break;

		newlen = slash - e->pattern;
		e = xmalloc(sizeof(struct pattern_entry));
		e->patternlen = newlen;
		e->pattern = xstrndup(oldpattern, newlen);
		hashmap_entry_init(&e->ent,
				   ignore_case ?
				   strihash(e->pattern) :
				   strhash(e->pattern));

		if (!hashmap_get_entry(&pl->parent_hashmap, e, ent, NULL))
			hashmap_add(&pl->parent_hashmap, &e->ent);
	}
}

static void strbuf_to_cone_pattern(struct strbuf *line, struct pattern_list *pl)
{
	strbuf_trim(line);

	strbuf_trim_trailing_dir_sep(line);

	if (!line->len)
		return;

	if (line->buf[0] != '/')
		strbuf_insert(line, 0, "/", 1);

	insert_recursive_pattern(pl, line);
}

static char const * const builtin_sparse_checkout_set_usage[] = {
	N_("git sparse-checkout set (--stdin | <patterns>)"),
	NULL
};

static struct sparse_checkout_set_opts {
	int use_stdin;
} set_opts;

static int sparse_checkout_set(int argc, const char **argv, const char *prefix)
{
	int i;
	struct pattern_list pl;
	int result;
	int changed_config = 0;

	static struct option builtin_sparse_checkout_set_options[] = {
		OPT_BOOL(0, "stdin", &set_opts.use_stdin,
			 N_("read patterns from standard in")),
		OPT_END(),
	};

	repo_read_index(the_repository);
	require_clean_work_tree(the_repository,
				N_("set sparse-checkout patterns"), NULL, 1, 0);

	memset(&pl, 0, sizeof(pl));

	argc = parse_options(argc, argv, prefix,
			     builtin_sparse_checkout_set_options,
			     builtin_sparse_checkout_set_usage,
			     PARSE_OPT_KEEP_UNKNOWN);

	if (core_sparse_checkout_cone) {
		struct strbuf line = STRBUF_INIT;

		hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
		hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
		pl.use_cone_patterns = 1;

		if (set_opts.use_stdin) {
			while (!strbuf_getline(&line, stdin))
				strbuf_to_cone_pattern(&line, &pl);
		} else {
			for (i = 0; i < argc; i++) {
				strbuf_setlen(&line, 0);
				strbuf_addstr(&line, argv[i]);
				strbuf_to_cone_pattern(&line, &pl);
			}
		}
	} else {
		if (set_opts.use_stdin) {
			struct strbuf line = STRBUF_INIT;

			while (!strbuf_getline(&line, stdin)) {
				size_t len;
				char *buf = strbuf_detach(&line, &len);
				add_pattern(buf, empty_base, 0, &pl, 0);
			}
		} else {
			for (i = 0; i < argc; i++)
				add_pattern(argv[i], empty_base, 0, &pl, 0);
		}
	}

	if (!core_apply_sparse_checkout) {
		set_config(MODE_ALL_PATTERNS);
		core_apply_sparse_checkout = 1;
		changed_config = 1;
	}

	result = write_patterns_and_update(&pl);

	if (result && changed_config)
		set_config(MODE_NO_PATTERNS);

	clear_pattern_list(&pl);
	return result;
}

static int sparse_checkout_disable(int argc, const char **argv)
{
	struct pattern_list pl;
	struct strbuf match_all = STRBUF_INIT;

	repo_read_index(the_repository);
	require_clean_work_tree(the_repository,
				N_("disable sparse-checkout"), NULL, 1, 0);

	memset(&pl, 0, sizeof(pl));
	hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
	hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
	pl.use_cone_patterns = 0;
	core_apply_sparse_checkout = 1;

	strbuf_addstr(&match_all, "/*");
	add_pattern(strbuf_detach(&match_all, NULL), empty_base, 0, &pl, 0);

	if (update_working_directory(&pl))
		die(_("error while refreshing working directory"));

	clear_pattern_list(&pl);
	return set_config(MODE_NO_PATTERNS);
}

int cmd_sparse_checkout(int argc, const char **argv, const char *prefix)
{
	static struct option builtin_sparse_checkout_options[] = {
		OPT_END(),
	};

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_sparse_checkout_usage,
				   builtin_sparse_checkout_options);

	argc = parse_options(argc, argv, prefix,
			     builtin_sparse_checkout_options,
			     builtin_sparse_checkout_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);

	git_config(git_default_config, NULL);

	if (argc > 0) {
		if (!strcmp(argv[0], "list"))
			return sparse_checkout_list(argc, argv);
		if (!strcmp(argv[0], "init"))
			return sparse_checkout_init(argc, argv);
		if (!strcmp(argv[0], "set"))
			return sparse_checkout_set(argc, argv, prefix);
		if (!strcmp(argv[0], "disable"))
			return sparse_checkout_disable(argc, argv);
	}

	usage_with_options(builtin_sparse_checkout_usage,
			   builtin_sparse_checkout_options);
}
Commit	Line	Data
94c0956b DS	1	#include "builtin.h"
	2	#include "config.h"
	3	#include "dir.h"
	4	#include "parse-options.h"
	5	#include "pathspec.h"
	6	#include "repository.h"
	7	#include "run-command.h"
	8	#include "strbuf.h"
af09ce24	9	#include "string-list.h"
e091228e DS	10	#include "cache.h"
	11	#include "cache-tree.h"
	12	#include "lockfile.h"
	13	#include "resolve-undo.h"
	14	#include "unpack-trees.h"
cff4e913	15	#include "wt-status.h"
94c0956b	16
416adc87 DS	17	static const char *empty_base = "";
416adc87 DS	18
94c0956b	19	static char const * const builtin_sparse_checkout_usage[] = {
72918c1a	20	N_("git sparse-checkout (init\|list\|set\|disable) <options>"),
94c0956b DS	21	NULL
	22	};
	23
	24	static char *get_sparse_checkout_filename(void)
	25	{
	26	return git_pathdup("info/sparse-checkout");
	27	}
	28
	29	static void write_patterns_to_file(FILE fp, struct pattern_list pl)
	30	{
	31	int i;
	32
	33	for (i = 0; i < pl->nr; i++) {
	34	struct path_pattern *p = pl->patterns[i];
	35
	36	if (p->flags & PATTERN_FLAG_NEGATIVE)
	37	fprintf(fp, "!");
	38
	39	fprintf(fp, "%s", p->pattern);
	40
	41	if (p->flags & PATTERN_FLAG_MUSTBEDIR)
	42	fprintf(fp, "/");
	43
	44	fprintf(fp, "\n");
	45	}
	46	}
	47
	48	static int sparse_checkout_list(int argc, const char **argv)
	49	{
	50	struct pattern_list pl;
	51	char *sparse_filename;
	52	int res;
	53
	54	memset(&pl, 0, sizeof(pl));
	55
de11951b DS	56	pl.use_cone_patterns = core_sparse_checkout_cone;
de11951b DS	57
94c0956b DS	58	sparse_filename = get_sparse_checkout_filename();
	59	res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL);
	60	free(sparse_filename);
	61
	62	if (res < 0) {
	63	warning(_("this worktree is not sparse (sparse-checkout file may not exist)"));
	64	return 0;
	65	}
	66
de11951b DS	67	if (pl.use_cone_patterns) {
	68	int i;
	69	struct pattern_entry *pe;
	70	struct hashmap_iter iter;
	71	struct string_list sl = STRING_LIST_INIT_DUP;
	72
	73	hashmap_for_each_entry(&pl.recursive_hashmap, &iter, pe, ent) {
	74	/* pe->pattern starts with "/", skip it */
	75	string_list_insert(&sl, pe->pattern + 1);
	76	}
	77
	78	string_list_sort(&sl);
	79
	80	for (i = 0; i < sl.nr; i++)
	81	printf("%s\n", sl.items[i].string);
	82
	83	return 0;
	84	}
	85
94c0956b DS	86	write_patterns_to_file(stdout, &pl);
	87	clear_pattern_list(&pl);
	88
	89	return 0;
	90	}
	91
e091228e	92	static int update_working_directory(struct pattern_list *pl)
bab3c359	93	{
bab3c359	94	int result = 0;
e091228e DS	95	struct unpack_trees_options o;
	96	struct lock_file lock_file = LOCK_INIT;
	97	struct object_id oid;
	98	struct tree *tree;
	99	struct tree_desc t;
	100	struct repository *r = the_repository;
bab3c359	101
e091228e DS	102	if (repo_read_index_unmerged(r))
	103	die(_("you need to resolve your current index first"));
	104
	105	if (get_oid("HEAD", &oid))
	106	return 0;
	107
	108	tree = parse_tree_indirect(&oid);
	109	parse_tree(tree);
	110	init_tree_desc(&t, tree->buffer, tree->size);
	111
	112	memset(&o, 0, sizeof(o));
	113	o.verbose_update = isatty(2);
	114	o.merge = 1;
	115	o.update = 1;
	116	o.fn = oneway_merge;
	117	o.head_idx = -1;
	118	o.src_index = r->index;
	119	o.dst_index = r->index;
	120	o.skip_sparse_checkout = 0;
	121	o.pl = pl;
	122	o.keep_pattern_list = !!pl;
	123
	124	resolve_undo_clear_index(r->index);
	125	setup_work_tree();
	126
	127	cache_tree_free(&r->index->cache_tree);
	128
	129	repo_hold_locked_index(r, &lock_file, LOCK_DIE_ON_ERROR);
	130
	131	core_apply_sparse_checkout = 1;
	132	result = unpack_trees(1, &t, &o);
	133
	134	if (!result) {
	135	prime_cache_tree(r, r->index, tree);
	136	write_locked_index(r->index, &lock_file, COMMIT_LOCK);
	137	} else
	138	rollback_lock_file(&lock_file);
bab3c359	139
bab3c359 DS	140	return result;
	141	}
	142
af09ce24 DS	143	static void write_cone_to_file(FILE fp, struct pattern_list pl)
	144	{
	145	int i;
	146	struct pattern_entry *pe;
	147	struct hashmap_iter iter;
	148	struct string_list sl = STRING_LIST_INIT_DUP;
e9de487a	149	struct strbuf parent_pattern = STRBUF_INIT;
af09ce24	150
e9de487a DS	151	hashmap_for_each_entry(&pl->parent_hashmap, &iter, pe, ent) {
	152	if (hashmap_get_entry(&pl->recursive_hashmap, pe, ent, NULL))
	153	continue;
	154
	155	if (!hashmap_contains_parent(&pl->recursive_hashmap,
	156	pe->pattern,
	157	&parent_pattern))
	158	string_list_insert(&sl, pe->pattern);
	159	}
af09ce24 DS	160
	161	string_list_sort(&sl);
	162	string_list_remove_duplicates(&sl, 0);
	163
	164	fprintf(fp, "/\n!//\n");
	165
	166	for (i = 0; i < sl.nr; i++) {
	167	char *pattern = sl.items[i].string;
	168
	169	if (strlen(pattern))
	170	fprintf(fp, "%s/\n!%s/*/\n", pattern, pattern);
	171	}
	172
	173	string_list_clear(&sl, 0);
	174
e9de487a DS	175	hashmap_for_each_entry(&pl->recursive_hashmap, &iter, pe, ent) {
	176	if (!hashmap_contains_parent(&pl->recursive_hashmap,
	177	pe->pattern,
	178	&parent_pattern))
	179	string_list_insert(&sl, pe->pattern);
	180	}
	181
	182	strbuf_release(&parent_pattern);
af09ce24 DS	183
	184	string_list_sort(&sl);
	185	string_list_remove_duplicates(&sl, 0);
	186
	187	for (i = 0; i < sl.nr; i++) {
	188	char *pattern = sl.items[i].string;
	189	fprintf(fp, "%s/\n", pattern);
	190	}
	191	}
	192
	193	static int write_patterns_and_update(struct pattern_list *pl)
	194	{
	195	char *sparse_filename;
	196	FILE *fp;
fb10ca5b DS	197	int fd;
fb10ca5b DS	198	struct lock_file lk = LOCK_INIT;
e091228e DS	199	int result;
e091228e DS	200
fb10ca5b	201	sparse_filename = get_sparse_checkout_filename();
3c754067 DS	202
	203	if (safe_create_leading_directories(sparse_filename))
	204	die(_("failed to create directory for sparse-checkout file"));
	205
fb10ca5b DS	206	fd = hold_lock_file_for_update(&lk, sparse_filename,
fb10ca5b DS	207	LOCK_DIE_ON_ERROR);
e091228e	208
fb10ca5b	209	result = update_working_directory(pl);
e091228e	210	if (result) {
fb10ca5b DS	211	rollback_lock_file(&lk);
fb10ca5b DS	212	free(sparse_filename);
e091228e DS	213	clear_pattern_list(pl);
	214	update_working_directory(NULL);
	215	return result;
	216	}
af09ce24	217
fb10ca5b	218	fp = xfdopen(fd, "w");
af09ce24 DS	219
	220	if (core_sparse_checkout_cone)
	221	write_cone_to_file(fp, pl);
	222	else
	223	write_patterns_to_file(fp, pl);
	224
fb10ca5b DS	225	fflush(fp);
fb10ca5b DS	226	commit_lock_file(&lk);
e091228e	227
af09ce24	228	free(sparse_filename);
e091228e	229	clear_pattern_list(pl);
af09ce24	230
e091228e	231	return 0;
af09ce24 DS	232	}
af09ce24 DS	233
bab3c359 DS	234	enum sparse_checkout_mode {
	235	MODE_NO_PATTERNS = 0,
	236	MODE_ALL_PATTERNS = 1,
af09ce24	237	MODE_CONE_PATTERNS = 2,
bab3c359 DS	238	};
	239
	240	static int set_config(enum sparse_checkout_mode mode)
	241	{
	242	const char *config_path;
	243
	244	if (git_config_set_gently("extensions.worktreeConfig", "true")) {
	245	error(_("failed to set extensions.worktreeConfig setting"));
	246	return 1;
	247	}
	248
	249	config_path = git_path("config.worktree");
	250	git_config_set_in_file_gently(config_path,
	251	"core.sparseCheckout",
	252	mode ? "true" : NULL);
	253
af09ce24 DS	254	git_config_set_in_file_gently(config_path,
	255	"core.sparseCheckoutCone",
	256	mode == MODE_CONE_PATTERNS ? "true" : NULL);
	257
bab3c359 DS	258	return 0;
	259	}
	260
af09ce24 DS	261	static char const * const builtin_sparse_checkout_init_usage[] = {
	262	N_("git sparse-checkout init [--cone]"),
	263	NULL
	264	};
	265
	266	static struct sparse_checkout_init_opts {
	267	int cone_mode;
	268	} init_opts;
	269
bab3c359 DS	270	static int sparse_checkout_init(int argc, const char **argv)
	271	{
	272	struct pattern_list pl;
	273	char *sparse_filename;
bab3c359	274	int res;
d89f09c8	275	struct object_id oid;
af09ce24	276	int mode;
416adc87	277	struct strbuf pattern = STRBUF_INIT;
bab3c359	278
af09ce24 DS	279	static struct option builtin_sparse_checkout_init_options[] = {
	280	OPT_BOOL(0, "cone", &init_opts.cone_mode,
	281	N_("initialize the sparse-checkout in cone mode")),
	282	OPT_END(),
	283	};
	284
cff4e913 DS	285	repo_read_index(the_repository);
	286	require_clean_work_tree(the_repository,
	287	N_("initialize sparse-checkout"), NULL, 1, 0);
	288
af09ce24 DS	289	argc = parse_options(argc, argv, NULL,
	290	builtin_sparse_checkout_init_options,
	291	builtin_sparse_checkout_init_usage, 0);
	292
e091228e DS	293	if (init_opts.cone_mode) {
	294	mode = MODE_CONE_PATTERNS;
	295	core_sparse_checkout_cone = 1;
	296	} else
	297	mode = MODE_ALL_PATTERNS;
af09ce24 DS	298
af09ce24 DS	299	if (set_config(mode))
bab3c359 DS	300	return 1;
	301
	302	memset(&pl, 0, sizeof(pl));
	303
	304	sparse_filename = get_sparse_checkout_filename();
	305	res = add_patterns_from_file_to_list(sparse_filename, "", 0, &pl, NULL);
	306
	307	/* If we already have a sparse-checkout file, use it. */
	308	if (res >= 0) {
	309	free(sparse_filename);
416adc87 DS	310	core_apply_sparse_checkout = 1;
416adc87 DS	311	return update_working_directory(NULL);
bab3c359 DS	312	}
bab3c359 DS	313
416adc87 DS	314	if (get_oid("HEAD", &oid)) {
416adc87 DS	315	FILE *fp;
bab3c359	316
416adc87 DS	317	/* assume we are in a fresh repo, but update the sparse-checkout file */
	318	fp = xfopen(sparse_filename, "w");
	319	if (!fp)
	320	die(_("failed to open '%s'"), sparse_filename);
bab3c359	321
416adc87 DS	322	free(sparse_filename);
	323	fprintf(fp, "/\n!//\n");
	324	fclose(fp);
d89f09c8 DS	325	return 0;
	326	}
	327
416adc87 DS	328	strbuf_addstr(&pattern, "/*");
	329	add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
	330	strbuf_addstr(&pattern, "!/*/");
	331	add_pattern(strbuf_detach(&pattern, NULL), empty_base, 0, &pl, 0);
	332
	333	return write_patterns_and_update(&pl);
bab3c359 DS	334	}
bab3c359 DS	335
af09ce24	336	static void insert_recursive_pattern(struct pattern_list pl, struct strbuf path)
f6039a94	337	{
af09ce24 DS	338	struct pattern_entry e = xmalloc(sizeof(e));
	339	e->patternlen = path->len;
	340	e->pattern = strbuf_detach(path, NULL);
190a65f9 DS	341	hashmap_entry_init(&e->ent,
	342	ignore_case ?
	343	strihash(e->pattern) :
	344	strhash(e->pattern));
f6039a94	345
af09ce24	346	hashmap_add(&pl->recursive_hashmap, &e->ent);
f6039a94	347
af09ce24 DS	348	while (e->patternlen) {
	349	char *slash = strrchr(e->pattern, '/');
	350	char *oldpattern = e->pattern;
	351	size_t newlen;
	352
	353	if (slash == e->pattern)
	354	break;
	355
	356	newlen = slash - e->pattern;
	357	e = xmalloc(sizeof(struct pattern_entry));
	358	e->patternlen = newlen;
	359	e->pattern = xstrndup(oldpattern, newlen);
190a65f9 DS	360	hashmap_entry_init(&e->ent,
	361	ignore_case ?
	362	strihash(e->pattern) :
	363	strhash(e->pattern));
af09ce24 DS	364
	365	if (!hashmap_get_entry(&pl->parent_hashmap, e, ent, NULL))
	366	hashmap_add(&pl->parent_hashmap, &e->ent);
	367	}
	368	}
	369
	370	static void strbuf_to_cone_pattern(struct strbuf line, struct pattern_list pl)
	371	{
	372	strbuf_trim(line);
	373
	374	strbuf_trim_trailing_dir_sep(line);
	375
	376	if (!line->len)
	377	return;
	378
	379	if (line->buf[0] != '/')
	380	strbuf_insert(line, 0, "/", 1);
	381
	382	insert_recursive_pattern(pl, line);
f6039a94 DS	383	}
f6039a94 DS	384
7bffca95 DS	385	static char const * const builtin_sparse_checkout_set_usage[] = {
	386	N_("git sparse-checkout set (--stdin \| <patterns>)"),
	387	NULL
	388	};
	389
	390	static struct sparse_checkout_set_opts {
	391	int use_stdin;
	392	} set_opts;
	393
f6039a94 DS	394	static int sparse_checkout_set(int argc, const char *argv, const char prefix)
f6039a94 DS	395	{
f6039a94 DS	396	int i;
	397	struct pattern_list pl;
	398	int result;
	399	int changed_config = 0;
7bffca95 DS	400
	401	static struct option builtin_sparse_checkout_set_options[] = {
	402	OPT_BOOL(0, "stdin", &set_opts.use_stdin,
	403	N_("read patterns from standard in")),
	404	OPT_END(),
	405	};
	406
cff4e913 DS	407	repo_read_index(the_repository);
	408	require_clean_work_tree(the_repository,
	409	N_("set sparse-checkout patterns"), NULL, 1, 0);
	410
f6039a94 DS	411	memset(&pl, 0, sizeof(pl));
f6039a94 DS	412
7bffca95 DS	413	argc = parse_options(argc, argv, prefix,
	414	builtin_sparse_checkout_set_options,
	415	builtin_sparse_checkout_set_usage,
	416	PARSE_OPT_KEEP_UNKNOWN);
	417
af09ce24	418	if (core_sparse_checkout_cone) {
7bffca95 DS	419	struct strbuf line = STRBUF_INIT;
7bffca95 DS	420
af09ce24 DS	421	hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
af09ce24 DS	422	hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
e091228e	423	pl.use_cone_patterns = 1;
af09ce24 DS	424
	425	if (set_opts.use_stdin) {
	426	while (!strbuf_getline(&line, stdin))
	427	strbuf_to_cone_pattern(&line, &pl);
	428	} else {
	429	for (i = 0; i < argc; i++) {
	430	strbuf_setlen(&line, 0);
	431	strbuf_addstr(&line, argv[i]);
	432	strbuf_to_cone_pattern(&line, &pl);
	433	}
7bffca95 DS	434	}
7bffca95 DS	435	} else {
af09ce24 DS	436	if (set_opts.use_stdin) {
	437	struct strbuf line = STRBUF_INIT;
	438
	439	while (!strbuf_getline(&line, stdin)) {
	440	size_t len;
	441	char *buf = strbuf_detach(&line, &len);
	442	add_pattern(buf, empty_base, 0, &pl, 0);
	443	}
	444	} else {
	445	for (i = 0; i < argc; i++)
	446	add_pattern(argv[i], empty_base, 0, &pl, 0);
	447	}
7bffca95	448	}
f6039a94 DS	449
	450	if (!core_apply_sparse_checkout) {
	451	set_config(MODE_ALL_PATTERNS);
	452	core_apply_sparse_checkout = 1;
	453	changed_config = 1;
	454	}
	455
	456	result = write_patterns_and_update(&pl);
	457
	458	if (result && changed_config)
	459	set_config(MODE_NO_PATTERNS);
	460
	461	clear_pattern_list(&pl);
	462	return result;
	463	}
	464
72918c1a DS	465	static int sparse_checkout_disable(int argc, const char **argv)
72918c1a DS	466	{
99dfa6f9 DS	467	struct pattern_list pl;
99dfa6f9 DS	468	struct strbuf match_all = STRBUF_INIT;
72918c1a	469
cff4e913 DS	470	repo_read_index(the_repository);
	471	require_clean_work_tree(the_repository,
	472	N_("disable sparse-checkout"), NULL, 1, 0);
	473
99dfa6f9 DS	474	memset(&pl, 0, sizeof(pl));
	475	hashmap_init(&pl.recursive_hashmap, pl_hashmap_cmp, NULL, 0);
	476	hashmap_init(&pl.parent_hashmap, pl_hashmap_cmp, NULL, 0);
	477	pl.use_cone_patterns = 0;
	478	core_apply_sparse_checkout = 1;
72918c1a	479
99dfa6f9 DS	480	strbuf_addstr(&match_all, "/*");
99dfa6f9 DS	481	add_pattern(strbuf_detach(&match_all, NULL), empty_base, 0, &pl, 0);
72918c1a	482
99dfa6f9	483	if (update_working_directory(&pl))
72918c1a DS	484	die(_("error while refreshing working directory"));
72918c1a DS	485
99dfa6f9	486	clear_pattern_list(&pl);
72918c1a DS	487	return set_config(MODE_NO_PATTERNS);
	488	}
	489
94c0956b DS	490	int cmd_sparse_checkout(int argc, const char *argv, const char prefix)
	491	{
	492	static struct option builtin_sparse_checkout_options[] = {
	493	OPT_END(),
	494	};
	495
	496	if (argc == 2 && !strcmp(argv[1], "-h"))
	497	usage_with_options(builtin_sparse_checkout_usage,
	498	builtin_sparse_checkout_options);
	499
	500	argc = parse_options(argc, argv, prefix,
	501	builtin_sparse_checkout_options,
	502	builtin_sparse_checkout_usage,
	503	PARSE_OPT_STOP_AT_NON_OPTION);
	504
	505	git_config(git_default_config, NULL);
	506
	507	if (argc > 0) {
	508	if (!strcmp(argv[0], "list"))
	509	return sparse_checkout_list(argc, argv);
bab3c359 DS	510	if (!strcmp(argv[0], "init"))
bab3c359 DS	511	return sparse_checkout_init(argc, argv);
f6039a94 DS	512	if (!strcmp(argv[0], "set"))
f6039a94 DS	513	return sparse_checkout_set(argc, argv, prefix);
72918c1a DS	514	if (!strcmp(argv[0], "disable"))
72918c1a DS	515	return sparse_checkout_disable(argc, argv);
94c0956b DS	516	}
	517
	518	usage_with_options(builtin_sparse_checkout_usage,
	519	builtin_sparse_checkout_options);
	520	}