[thirdparty/git.git] / builtin / submodule--helper.c

#include "builtin.h"
#include "cache.h"
#include "parse-options.h"
#include "quote.h"
#include "pathspec.h"
#include "dir.h"
#include "utf8.h"
#include "submodule.h"
#include "submodule-config.h"
#include "string-list.h"
#include "run-command.h"

struct module_list {
	const struct cache_entry **entries;
	int alloc, nr;
};
#define MODULE_LIST_INIT { NULL, 0, 0 }

static int module_list_compute(int argc, const char **argv,
			       const char *prefix,
			       struct pathspec *pathspec,
			       struct module_list *list)
{
	int i, result = 0;
	char *max_prefix, *ps_matched = NULL;
	int max_prefix_len;
	parse_pathspec(pathspec, 0,
		       PATHSPEC_PREFER_FULL |
		       PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
		       prefix, argv);

	/* Find common prefix for all pathspec's */
	max_prefix = common_prefix(pathspec);
	max_prefix_len = max_prefix ? strlen(max_prefix) : 0;

	if (pathspec->nr)
		ps_matched = xcalloc(pathspec->nr, 1);

	if (read_cache() < 0)
		die(_("index file corrupt"));

	for (i = 0; i < active_nr; i++) {
		const struct cache_entry *ce = active_cache[i];

		if (!S_ISGITLINK(ce->ce_mode) ||
		    !match_pathspec(pathspec, ce->name, ce_namelen(ce),
				    max_prefix_len, ps_matched, 1))
			continue;

		ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
		list->entries[list->nr++] = ce;
		while (i + 1 < active_nr &&
		       !strcmp(ce->name, active_cache[i + 1]->name))
			/*
			 * Skip entries with the same name in different stages
			 * to make sure an entry is returned only once.
			 */
			i++;
	}
	free(max_prefix);

	if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
		result = -1;

	free(ps_matched);

	return result;
}

static int module_list(int argc, const char **argv, const char *prefix)
{
	int i;
	struct pathspec pathspec;
	struct module_list list = MODULE_LIST_INIT;

	struct option module_list_options[] = {
		OPT_STRING(0, "prefix", &prefix,
			   N_("path"),
			   N_("alternative anchor for relative paths")),
		OPT_END()
	};

	const char *const git_submodule_helper_usage[] = {
		N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
		NULL
	};

	argc = parse_options(argc, argv, prefix, module_list_options,
			     git_submodule_helper_usage, 0);

	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) {
		printf("#unmatched\n");
		return 1;
	}

	for (i = 0; i < list.nr; i++) {
		const struct cache_entry *ce = list.entries[i];

		if (ce_stage(ce))
			printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
		else
			printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));

		utf8_fprintf(stdout, "%s\n", ce->name);
	}
	return 0;
}

static int module_name(int argc, const char **argv, const char *prefix)
{
	const struct submodule *sub;

	if (argc != 2)
		usage(_("git submodule--helper name <path>"));

	gitmodules_config();
	sub = submodule_from_path(null_sha1, argv[1]);

	if (!sub)
		die(_("no submodule mapping found in .gitmodules for path '%s'"),
		    argv[1]);

	printf("%s\n", sub->name);

	return 0;
}
static int clone_submodule(const char *path, const char *gitdir, const char *url,
			   const char *depth, const char *reference, int quiet)
{
	struct child_process cp;
	child_process_init(&cp);

	argv_array_push(&cp.args, "clone");
	argv_array_push(&cp.args, "--no-checkout");
	if (quiet)
		argv_array_push(&cp.args, "--quiet");
	if (depth && *depth)
		argv_array_pushl(&cp.args, "--depth", depth, NULL);
	if (reference && *reference)
		argv_array_pushl(&cp.args, "--reference", reference, NULL);
	if (gitdir && *gitdir)
		argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);

	argv_array_push(&cp.args, url);
	argv_array_push(&cp.args, path);

	cp.git_cmd = 1;
	cp.env = local_repo_env;
	cp.no_stdin = 1;

	return run_command(&cp);
}

static int module_clone(int argc, const char **argv, const char *prefix)
{
	const char *path = NULL, *name = NULL, *url = NULL;
	const char *reference = NULL, *depth = NULL;
	int quiet = 0;
	FILE *submodule_dot_git;
	char *sm_gitdir, *cwd, *p;
	struct strbuf rel_path = STRBUF_INIT;
	struct strbuf sb = STRBUF_INIT;

	struct option module_clone_options[] = {
		OPT_STRING(0, "prefix", &prefix,
			   N_("path"),
			   N_("alternative anchor for relative paths")),
		OPT_STRING(0, "path", &path,
			   N_("path"),
			   N_("where the new submodule will be cloned to")),
		OPT_STRING(0, "name", &name,
			   N_("string"),
			   N_("name of the new submodule")),
		OPT_STRING(0, "url", &url,
			   N_("string"),
			   N_("url where to clone the submodule from")),
		OPT_STRING(0, "reference", &reference,
			   N_("string"),
			   N_("reference repository")),
		OPT_STRING(0, "depth", &depth,
			   N_("string"),
			   N_("depth for shallow clones")),
		OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
		OPT_END()
	};

	const char *const git_submodule_helper_usage[] = {
		N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
		   "[--reference <repository>] [--name <name>] [--depth <depth>] "
		   "--url <url> --path <path>"),
		NULL
	};

	argc = parse_options(argc, argv, prefix, module_clone_options,
			     git_submodule_helper_usage, 0);

	if (argc || !url || !path)
		usage_with_options(git_submodule_helper_usage,
				   module_clone_options);

	strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
	sm_gitdir = strbuf_detach(&sb, NULL);

	if (!file_exists(sm_gitdir)) {
		if (safe_create_leading_directories_const(sm_gitdir) < 0)
			die(_("could not create directory '%s'"), sm_gitdir);
		if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
			die(_("clone of '%s' into submodule path '%s' failed"),
			    url, path);
	} else {
		if (safe_create_leading_directories_const(path) < 0)
			die(_("could not create directory '%s'"), path);
		strbuf_addf(&sb, "%s/index", sm_gitdir);
		unlink_or_warn(sb.buf);
		strbuf_reset(&sb);
	}

	/* Write a .git file in the submodule to redirect to the superproject. */
	if (safe_create_leading_directories_const(path) < 0)
		die(_("could not create directory '%s'"), path);

	if (path && *path)
		strbuf_addf(&sb, "%s/.git", path);
	else
		strbuf_addstr(&sb, ".git");

	if (safe_create_leading_directories_const(sb.buf) < 0)
		die(_("could not create leading directories of '%s'"), sb.buf);
	submodule_dot_git = fopen(sb.buf, "w");
	if (!submodule_dot_git)
		die_errno(_("cannot open file '%s'"), sb.buf);

	fprintf(submodule_dot_git, "gitdir: %s\n",
		relative_path(sm_gitdir, path, &rel_path));
	if (fclose(submodule_dot_git))
		die(_("could not close file %s"), sb.buf);
	strbuf_reset(&sb);
	strbuf_reset(&rel_path);

	cwd = xgetcwd();
	/* Redirect the worktree of the submodule in the superproject's config */
	if (!is_absolute_path(sm_gitdir)) {
		strbuf_addf(&sb, "%s/%s", cwd, sm_gitdir);
		free(sm_gitdir);
		sm_gitdir = strbuf_detach(&sb, NULL);
	}

	strbuf_addf(&sb, "%s/%s", cwd, path);
	p = git_pathdup_submodule(path, "config");
	if (!p)
		die(_("could not get submodule directory for '%s'"), path);
	git_config_set_in_file(p, "core.worktree",
			       relative_path(sb.buf, sm_gitdir, &rel_path));
	strbuf_release(&sb);
	strbuf_release(&rel_path);
	free(sm_gitdir);
	free(cwd);
	free(p);
	return 0;
}

struct cmd_struct {
	const char *cmd;
	int (*fn)(int, const char **, const char *);
};

static struct cmd_struct commands[] = {
	{"list", module_list},
	{"name", module_name},
	{"clone", module_clone},
};

int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
{
	int i;
	if (argc < 2)
		die(_("fatal: submodule--helper subcommand must be "
		      "called with a subcommand"));

	for (i = 0; i < ARRAY_SIZE(commands); i++)
		if (!strcmp(argv[1], commands[i].cmd))
			return commands[i].fn(argc - 1, argv + 1, prefix);

	die(_("fatal: '%s' is not a valid submodule--helper "
	      "subcommand"), argv[1]);
}
Commit	Line	Data
74703a1e SB	1	#include "builtin.h"
	2	#include "cache.h"
	3	#include "parse-options.h"
	4	#include "quote.h"
	5	#include "pathspec.h"
	6	#include "dir.h"
	7	#include "utf8.h"
0ea306ef SB	8	#include "submodule.h"
	9	#include "submodule-config.h"
	10	#include "string-list.h"
ee8838d1	11	#include "run-command.h"
74703a1e SB	12
	13	struct module_list {
	14	const struct cache_entry **entries;
	15	int alloc, nr;
	16	};
	17	#define MODULE_LIST_INIT { NULL, 0, 0 }
	18
	19	static int module_list_compute(int argc, const char **argv,
	20	const char *prefix,
	21	struct pathspec *pathspec,
	22	struct module_list *list)
	23	{
	24	int i, result = 0;
	25	char max_prefix, ps_matched = NULL;
	26	int max_prefix_len;
	27	parse_pathspec(pathspec, 0,
	28	PATHSPEC_PREFER_FULL \|
	29	PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
	30	prefix, argv);
	31
	32	/* Find common prefix for all pathspec's */
	33	max_prefix = common_prefix(pathspec);
	34	max_prefix_len = max_prefix ? strlen(max_prefix) : 0;
	35
	36	if (pathspec->nr)
	37	ps_matched = xcalloc(pathspec->nr, 1);
	38
	39	if (read_cache() < 0)
	40	die(_("index file corrupt"));
	41
	42	for (i = 0; i < active_nr; i++) {
	43	const struct cache_entry *ce = active_cache[i];
	44
	45	if (!S_ISGITLINK(ce->ce_mode) \|\|
	46	!match_pathspec(pathspec, ce->name, ce_namelen(ce),
	47	max_prefix_len, ps_matched, 1))
	48	continue;
	49
	50	ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
	51	list->entries[list->nr++] = ce;
	52	while (i + 1 < active_nr &&
	53	!strcmp(ce->name, active_cache[i + 1]->name))
	54	/*
	55	* Skip entries with the same name in different stages
	56	* to make sure an entry is returned only once.
	57	*/
	58	i++;
	59	}
	60	free(max_prefix);
	61
	62	if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
	63	result = -1;
	64
	65	free(ps_matched);
	66
	67	return result;
	68	}
	69
	70	static int module_list(int argc, const char *argv, const char prefix)
	71	{
	72	int i;
	73	struct pathspec pathspec;
	74	struct module_list list = MODULE_LIST_INIT;
	75
76	struct option module_list_options[] = {
77	OPT_STRING(0, "prefix", &prefix,
78	N_("path"),
79	N_("alternative anchor for relative paths")),
80	OPT_END()
81	};
82
83	const char *const git_submodule_helper_usage[] = {
84	N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
85	NULL
86	};
87
88	argc = parse_options(argc, argv, prefix, module_list_options,
89	git_submodule_helper_usage, 0);
90
91	if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) {
92	printf("#unmatched\n");
93	return 1;
94	}
95
96	for (i = 0; i < list.nr; i++) {
97	const struct cache_entry *ce = list.entries[i];
98
99	if (ce_stage(ce))
100	printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
101	else
102	printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
103
104	utf8_fprintf(stdout, "%s\n", ce->name);
105	}
106	return 0;
107	}
108
0ea306ef SB	109	static int module_name(int argc, const char *argv, const char prefix)
	110	{
	111	const struct submodule *sub;
	112
	113	if (argc != 2)
	114	usage(_("git submodule--helper name <path>"));
	115
	116	gitmodules_config();
	117	sub = submodule_from_path(null_sha1, argv[1]);
	118
	119	if (!sub)
	120	die(_("no submodule mapping found in .gitmodules for path '%s'"),
	121	argv[1]);
	122
	123	printf("%s\n", sub->name);
	124
	125	return 0;
	126	}
ee8838d1 SB	127	static int clone_submodule(const char path, const char gitdir, const char *url,
	128	const char depth, const char reference, int quiet)
	129	{
	130	struct child_process cp;
	131	child_process_init(&cp);
	132
	133	argv_array_push(&cp.args, "clone");
	134	argv_array_push(&cp.args, "--no-checkout");
	135	if (quiet)
	136	argv_array_push(&cp.args, "--quiet");
	137	if (depth && *depth)
	138	argv_array_pushl(&cp.args, "--depth", depth, NULL);
	139	if (reference && *reference)
	140	argv_array_pushl(&cp.args, "--reference", reference, NULL);
	141	if (gitdir && *gitdir)
	142	argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
	143
	144	argv_array_push(&cp.args, url);
	145	argv_array_push(&cp.args, path);
	146
	147	cp.git_cmd = 1;
	148	cp.env = local_repo_env;
	149	cp.no_stdin = 1;
	150
	151	return run_command(&cp);
	152	}
	153
	154	static int module_clone(int argc, const char *argv, const char prefix)
	155	{
	156	const char path = NULL, name = NULL, *url = NULL;
	157	const char reference = NULL, depth = NULL;
	158	int quiet = 0;
	159	FILE *submodule_dot_git;
	160	char sm_gitdir, cwd, *p;
	161	struct strbuf rel_path = STRBUF_INIT;
	162	struct strbuf sb = STRBUF_INIT;
	163
	164	struct option module_clone_options[] = {
	165	OPT_STRING(0, "prefix", &prefix,
	166	N_("path"),
	167	N_("alternative anchor for relative paths")),
	168	OPT_STRING(0, "path", &path,
	169	N_("path"),
	170	N_("where the new submodule will be cloned to")),
	171	OPT_STRING(0, "name", &name,
	172	N_("string"),
	173	N_("name of the new submodule")),
	174	OPT_STRING(0, "url", &url,
	175	N_("string"),
	176	N_("url where to clone the submodule from")),
	177	OPT_STRING(0, "reference", &reference,
	178	N_("string"),
	179	N_("reference repository")),
	180	OPT_STRING(0, "depth", &depth,
	181	N_("string"),
	182	N_("depth for shallow clones")),
	183	OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
	184	OPT_END()
	185	};
	186
	187	const char *const git_submodule_helper_usage[] = {
	188	N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
7dad2633 JK	189	"[--reference <repository>] [--name <name>] [--depth <depth>] "
7dad2633 JK	190	"--url <url> --path <path>"),
ee8838d1 SB	191	NULL
	192	};
	193
	194	argc = parse_options(argc, argv, prefix, module_clone_options,
	195	git_submodule_helper_usage, 0);
	196
7dad2633	197	if (argc \|\| !url \|\| !path)
08e0970a JK	198	usage_with_options(git_submodule_helper_usage,
	199	module_clone_options);
	200
ee8838d1 SB	201	strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
	202	sm_gitdir = strbuf_detach(&sb, NULL);
	203
	204	if (!file_exists(sm_gitdir)) {
	205	if (safe_create_leading_directories_const(sm_gitdir) < 0)
	206	die(_("could not create directory '%s'"), sm_gitdir);
	207	if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
	208	die(_("clone of '%s' into submodule path '%s' failed"),
	209	url, path);
	210	} else {
	211	if (safe_create_leading_directories_const(path) < 0)
	212	die(_("could not create directory '%s'"), path);
	213	strbuf_addf(&sb, "%s/index", sm_gitdir);
	214	unlink_or_warn(sb.buf);
	215	strbuf_reset(&sb);
	216	}
	217
	218	/* Write a .git file in the submodule to redirect to the superproject. */
	219	if (safe_create_leading_directories_const(path) < 0)
	220	die(_("could not create directory '%s'"), path);
	221
	222	if (path && *path)
	223	strbuf_addf(&sb, "%s/.git", path);
	224	else
	225	strbuf_addstr(&sb, ".git");
	226
	227	if (safe_create_leading_directories_const(sb.buf) < 0)
	228	die(_("could not create leading directories of '%s'"), sb.buf);
	229	submodule_dot_git = fopen(sb.buf, "w");
	230	if (!submodule_dot_git)
	231	die_errno(_("cannot open file '%s'"), sb.buf);
	232
	233	fprintf(submodule_dot_git, "gitdir: %s\n",
	234	relative_path(sm_gitdir, path, &rel_path));
	235	if (fclose(submodule_dot_git))
	236	die(_("could not close file %s"), sb.buf);
	237	strbuf_reset(&sb);
	238	strbuf_reset(&rel_path);
	239
	240	cwd = xgetcwd();
	241	/* Redirect the worktree of the submodule in the superproject's config */
	242	if (!is_absolute_path(sm_gitdir)) {
	243	strbuf_addf(&sb, "%s/%s", cwd, sm_gitdir);
	244	free(sm_gitdir);
	245	sm_gitdir = strbuf_detach(&sb, NULL);
	246	}
	247
	248	strbuf_addf(&sb, "%s/%s", cwd, path);
	249	p = git_pathdup_submodule(path, "config");
	250	if (!p)
	251	die(_("could not get submodule directory for '%s'"), path);
	252	git_config_set_in_file(p, "core.worktree",
	253	relative_path(sb.buf, sm_gitdir, &rel_path));
	254	strbuf_release(&sb);
	255	strbuf_release(&rel_path);
	256	free(sm_gitdir);
	257	free(cwd);
	258	free(p);
	259	return 0;
	260	}
74703a1e SB	261
	262	struct cmd_struct {
	263	const char *cmd;
	264	int (fn)(int, const char , const char );
	265	};
	266
	267	static struct cmd_struct commands[] = {
	268	{"list", module_list},
0ea306ef	269	{"name", module_name},
ee8838d1	270	{"clone", module_clone},
74703a1e SB	271	};
	272
	273	int cmd_submodule__helper(int argc, const char *argv, const char prefix)
	274	{
	275	int i;
	276	if (argc < 2)
	277	die(_("fatal: submodule--helper subcommand must be "
	278	"called with a subcommand"));
	279
	280	for (i = 0; i < ARRAY_SIZE(commands); i++)
	281	if (!strcmp(argv[1], commands[i].cmd))
	282	return commands[i].fn(argc - 1, argv + 1, prefix);
	283
	284	die(_("fatal: '%s' is not a valid submodule--helper "
	285	"subcommand"), argv[1]);
	286	}