[thirdparty/git.git] / builtin / mv.c

/*
 * "git mv" builtin command
 *
 * Copyright (C) 2006 Johannes Schindelin
 */
#include "cache.h"
#include "builtin.h"
#include "dir.h"
#include "cache-tree.h"
#include "string-list.h"
#include "parse-options.h"
#include "submodule.h"

static const char * const builtin_mv_usage[] = {
	N_("git mv [options] <source>... <destination>"),
	NULL
};

#define DUP_BASENAME 1
#define KEEP_TRAILING_SLASH 2

static const char **internal_copy_pathspec(const char *prefix,
					   const char **pathspec,
					   int count, unsigned flags)
{
	int i;
	const char **result = xmalloc((count + 1) * sizeof(const char *));
	memcpy(result, pathspec, count * sizeof(const char *));
	result[count] = NULL;
	for (i = 0; i < count; i++) {
		int length = strlen(result[i]);
		int to_copy = length;
		while (!(flags & KEEP_TRAILING_SLASH) &&
		       to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
			to_copy--;
		if (to_copy != length || flags & DUP_BASENAME) {
			char *it = xmemdupz(result[i], to_copy);
			if (flags & DUP_BASENAME) {
				result[i] = xstrdup(basename(it));
				free(it);
			} else
				result[i] = it;
		}
	}
	return get_pathspec(prefix, result);
}

static const char *add_slash(const char *path)
{
	int len = strlen(path);
	if (path[len - 1] != '/') {
		char *with_slash = xmalloc(len + 2);
		memcpy(with_slash, path, len);
		with_slash[len++] = '/';
		with_slash[len] = 0;
		return with_slash;
	}
	return path;
}

static struct lock_file lock_file;
#define SUBMODULE_WITH_GITDIR ((const char *)1)

static void prepare_move_submodule(const char *src, int first,
				   const char **submodule_gitfile)
{
	struct strbuf submodule_dotgit = STRBUF_INIT;
	if (!S_ISGITLINK(active_cache[first]->ce_mode))
		die(_("Directory %s is in index and no submodule?"), src);
	if (!is_staging_gitmodules_ok())
		die(_("Please stage your changes to .gitmodules or stash them to proceed"));
	strbuf_addf(&submodule_dotgit, "%s/.git", src);
	*submodule_gitfile = read_gitfile(submodule_dotgit.buf);
	if (*submodule_gitfile)
		*submodule_gitfile = xstrdup(*submodule_gitfile);
	else
		*submodule_gitfile = SUBMODULE_WITH_GITDIR;
	strbuf_release(&submodule_dotgit);
}

static int index_range_of_same_dir(const char *src, int length,
				   int *first_p, int *last_p)
{
	const char *src_w_slash = add_slash(src);
	int first, last, len_w_slash = length + 1;

	first = cache_name_pos(src_w_slash, len_w_slash);
	if (first >= 0)
		die(_("%.*s is in index"), len_w_slash, src_w_slash);

	first = -1 - first;
	for (last = first; last < active_nr; last++) {
		const char *path = active_cache[last]->name;
		if (strncmp(path, src_w_slash, len_w_slash))
			break;
	}
	if (src_w_slash != src)
		free((char *)src_w_slash);
	*first_p = first;
	*last_p = last;
	return last - first;
}

int cmd_mv(int argc, const char **argv, const char *prefix)
{
	int i, gitmodules_modified = 0;
	int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
	struct option builtin_mv_options[] = {
		OPT__VERBOSE(&verbose, N_("be verbose")),
		OPT__DRY_RUN(&show_only, N_("dry run")),
		OPT__FORCE(&force, N_("force move/rename even if target exists")),
		OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
		OPT_END(),
	};
	const char **source, **destination, **dest_path, **submodule_gitfile;
	enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
	struct stat st;
	struct string_list src_for_dst = STRING_LIST_INIT_NODUP;

	gitmodules_config();
	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, builtin_mv_options,
			     builtin_mv_usage, 0);
	if (--argc < 1)
		usage_with_options(builtin_mv_usage, builtin_mv_options);

	hold_locked_index(&lock_file, 1);
	if (read_cache() < 0)
		die(_("index file corrupt"));

	source = internal_copy_pathspec(prefix, argv, argc, 0);
	modes = xcalloc(argc, sizeof(enum update_mode));
	/*
	 * Keep trailing slash, needed to let
	 * "git mv file no-such-dir/" error out.
	 */
	dest_path = internal_copy_pathspec(prefix, argv + argc, 1,
					   KEEP_TRAILING_SLASH);
	submodule_gitfile = xcalloc(argc, sizeof(char *));

	if (dest_path[0][0] == '\0')
		/* special case: "." was normalized to "" */
		destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	else if (!lstat(dest_path[0], &st) &&
			S_ISDIR(st.st_mode)) {
		dest_path[0] = add_slash(dest_path[0]);
		destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
	} else {
		if (argc != 1)
			die(_("destination '%s' is not a directory"), dest_path[0]);
		destination = dest_path;
	}

	/* Checking */
	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		int length, src_is_dir;
		const char *bad = NULL;

		if (show_only)
			printf(_("Checking rename of '%s' to '%s'\n"), src, dst);

		length = strlen(src);
		if (lstat(src, &st) < 0)
			bad = _("bad source");
		else if (!strncmp(src, dst, length) &&
				(dst[length] == 0 || dst[length] == '/')) {
			bad = _("can not move directory into itself");
		} else if ((src_is_dir = S_ISDIR(st.st_mode))
				&& lstat(dst, &st) == 0)
			bad = _("cannot move directory over file");
		else if (src_is_dir) {
			int first = cache_name_pos(src, length), last;

			if (first >= 0)
				prepare_move_submodule(src, first,
						       submodule_gitfile + i);
			else if (index_range_of_same_dir(src, length,
							 &first, &last) < 1)
				bad = _("source directory is empty");
			else { /* last - first >= 1 */
				int j, dst_len, n;

				modes[i] = WORKING_DIRECTORY;
				n = argc + last - first;
				REALLOC_ARRAY(source, n);
				REALLOC_ARRAY(destination, n);
				REALLOC_ARRAY(modes, n);
				REALLOC_ARRAY(submodule_gitfile, n);

				dst = add_slash(dst);
				dst_len = strlen(dst);

				for (j = 0; j < last - first; j++) {
					const char *path = active_cache[first + j]->name;
					source[argc + j] = path;
					destination[argc + j] =
						prefix_path(dst, dst_len, path + length + 1);
					modes[argc + j] = INDEX;
					submodule_gitfile[argc + j] = NULL;
				}
				argc += last - first;
			}
		} else if (cache_name_pos(src, length) < 0)
			bad = _("not under version control");
		else if (lstat(dst, &st) == 0 &&
			 (!ignore_case || strcasecmp(src, dst))) {
			bad = _("destination exists");
			if (force) {
				/*
				 * only files can overwrite each other:
				 * check both source and destination
				 */
				if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
					if (verbose)
						warning(_("overwriting '%s'"), dst);
					bad = NULL;
				} else
					bad = _("Cannot overwrite");
			}
		} else if (string_list_has_string(&src_for_dst, dst))
			bad = _("multiple sources for the same target");
		else if (is_dir_sep(dst[strlen(dst) - 1]))
			bad = _("destination directory does not exist");
		else
			string_list_insert(&src_for_dst, dst);

		if (!bad)
			continue;
		if (!ignore_errors)
			die(_("%s, source=%s, destination=%s"),
			     bad, src, dst);
		if (--argc > 0) {
			int n = argc - i;
			memmove(source + i, source + i + 1,
				n * sizeof(char *));
			memmove(destination + i, destination + i + 1,
				n * sizeof(char *));
			memmove(modes + i, modes + i + 1,
				n * sizeof(enum update_mode));
			memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
				n * sizeof(char *));
			i--;
		}
	}

	for (i = 0; i < argc; i++) {
		const char *src = source[i], *dst = destination[i];
		enum update_mode mode = modes[i];
		int pos;
		if (show_only || verbose)
			printf(_("Renaming %s to %s\n"), src, dst);
		if (!show_only && mode != INDEX) {
			if (rename(src, dst) < 0 && !ignore_errors)
				die_errno(_("renaming '%s' failed"), src);
			if (submodule_gitfile[i]) {
				if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
					connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
				if (!update_path_in_gitmodules(src, dst))
					gitmodules_modified = 1;
			}
		}

		if (mode == WORKING_DIRECTORY)
			continue;

		pos = cache_name_pos(src, strlen(src));
		assert(pos >= 0);
		if (!show_only)
			rename_cache_entry_at(pos, dst);
	}

	if (gitmodules_modified)
		stage_updated_gitmodules();

	if (active_cache_changed &&
	    write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
		die(_("Unable to write new index file"));

	return 0;
}
Commit	Line	Data
11be42a4 JS	1	/*
	2	* "git mv" builtin command
	3	*
	4	* Copyright (C) 2006 Johannes Schindelin
	5	*/
11be42a4 JS	6	#include "cache.h"
	7	#include "builtin.h"
	8	#include "dir.h"
	9	#include "cache-tree.h"
c455c87c	10	#include "string-list.h"
c7a20c11	11	#include "parse-options.h"
a88c915d	12	#include "submodule.h"
11be42a4	13
c7a20c11	14	static const char * const builtin_mv_usage[] = {
6c54dc46	15	N_("git mv [options] <source>... <destination>"),
c7a20c11 PH	16	NULL
c7a20c11 PH	17	};
11be42a4	18
c57f6281 MM	19	#define DUP_BASENAME 1
	20	#define KEEP_TRAILING_SLASH 2
	21
e4d92cdc NTND	22	static const char *internal_copy_pathspec(const char prefix,
e4d92cdc NTND	23	const char **pathspec,
c57f6281	24	int count, unsigned flags)
11be42a4	25	{
d78b0f3d	26	int i;
11be42a4 JS	27	const char *result = xmalloc((count + 1) sizeof(const char *));
	28	memcpy(result, pathspec, count * sizeof(const char *));
	29	result[count] = NULL;
d78b0f3d JS	30	for (i = 0; i < count; i++) {
d78b0f3d JS	31	int length = strlen(result[i]);
af82559b	32	int to_copy = length;
c57f6281 MM	33	while (!(flags & KEEP_TRAILING_SLASH) &&
c57f6281 MM	34	to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
af82559b	35	to_copy--;
c57f6281	36	if (to_copy != length \|\| flags & DUP_BASENAME) {
af82559b	37	char *it = xmemdupz(result[i], to_copy);
c57f6281	38	if (flags & DUP_BASENAME) {
0d0ff65c BC	39	result[i] = xstrdup(basename(it));
	40	free(it);
	41	} else
	42	result[i] = it;
af82559b	43	}
11be42a4	44	}
971dfa19	45	return get_pathspec(prefix, result);
11be42a4 JS	46	}
11be42a4 JS	47
ac64a722 JS	48	static const char add_slash(const char path)
	49	{
	50	int len = strlen(path);
	51	if (path[len - 1] != '/') {
	52	char *with_slash = xmalloc(len + 2);
	53	memcpy(with_slash, path, len);
329a3047 JH	54	with_slash[len++] = '/';
329a3047 JH	55	with_slash[len] = 0;
ac64a722 JS	56	return with_slash;
	57	}
	58	return path;
	59	}
	60
11be42a4	61	static struct lock_file lock_file;
04c1ee57	62	#define SUBMODULE_WITH_GITDIR ((const char *)1)
11be42a4	63
3af05a6d NTND	64	static void prepare_move_submodule(const char *src, int first,
	65	const char **submodule_gitfile)
	66	{
	67	struct strbuf submodule_dotgit = STRBUF_INIT;
	68	if (!S_ISGITLINK(active_cache[first]->ce_mode))
	69	die(_("Directory %s is in index and no submodule?"), src);
	70	if (!is_staging_gitmodules_ok())
	71	die(_("Please stage your changes to .gitmodules or stash them to proceed"));
	72	strbuf_addf(&submodule_dotgit, "%s/.git", src);
	73	*submodule_gitfile = read_gitfile(submodule_dotgit.buf);
	74	if (*submodule_gitfile)
	75	submodule_gitfile = xstrdup(submodule_gitfile);
	76	else
	77	*submodule_gitfile = SUBMODULE_WITH_GITDIR;
	78	strbuf_release(&submodule_dotgit);
	79	}
	80
e2b6cfa0 NTND	81	static int index_range_of_same_dir(const char *src, int length,
	82	int first_p, int last_p)
	83	{
	84	const char *src_w_slash = add_slash(src);
	85	int first, last, len_w_slash = length + 1;
	86
	87	first = cache_name_pos(src_w_slash, len_w_slash);
	88	if (first >= 0)
	89	die(_("%.*s is in index"), len_w_slash, src_w_slash);
	90
	91	first = -1 - first;
	92	for (last = first; last < active_nr; last++) {
	93	const char *path = active_cache[last]->name;
	94	if (strncmp(path, src_w_slash, len_w_slash))
	95	break;
	96	}
	97	if (src_w_slash != src)
	98	free((char *)src_w_slash);
	99	*first_p = first;
	100	*last_p = last;
	101	return last - first;
	102	}
	103
7061cf0f	104	int cmd_mv(int argc, const char *argv, const char prefix)
11be42a4	105	{
03b86647	106	int i, gitmodules_modified = 0;
11be42a4	107	int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
c7a20c11	108	struct option builtin_mv_options[] = {
6c54dc46 NTND	109	OPT__VERBOSE(&verbose, N_("be verbose")),
	110	OPT__DRY_RUN(&show_only, N_("dry run")),
	111	OPT__FORCE(&force, N_("force move/rename even if target exists")),
d5d09d47	112	OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
c7a20c11 PH	113	OPT_END(),
c7a20c11 PH	114	};
a88c915d	115	const char source, destination, dest_path, submodule_gitfile;
ac64a722	116	enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
11be42a4	117	struct stat st;
183113a5	118	struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
11be42a4	119
0656781f	120	gitmodules_config();
ef90d6d4	121	git_config(git_default_config, NULL);
11be42a4	122
37782920 SB	123	argc = parse_options(argc, argv, prefix, builtin_mv_options,
37782920 SB	124	builtin_mv_usage, 0);
c7a20c11 PH	125	if (--argc < 1)
c7a20c11 PH	126	usage_with_options(builtin_mv_usage, builtin_mv_options);
11be42a4	127
03b86647	128	hold_locked_index(&lock_file, 1);
99caeed0	129	if (read_cache() < 0)
431b049e	130	die(_("index file corrupt"));
99caeed0	131
e4d92cdc	132	source = internal_copy_pathspec(prefix, argv, argc, 0);
c7a20c11	133	modes = xcalloc(argc, sizeof(enum update_mode));
c57f6281 MM	134	/*
	135	* Keep trailing slash, needed to let
	136	* "git mv file no-such-dir/" error out.
	137	*/
	138	dest_path = internal_copy_pathspec(prefix, argv + argc, 1,
	139	KEEP_TRAILING_SLASH);
a88c915d	140	submodule_gitfile = xcalloc(argc, sizeof(char *));
11be42a4	141
c5203bdf JS	142	if (dest_path[0][0] == '\0')
c5203bdf JS	143	/* special case: "." was normalized to "" */
c57f6281	144	destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
c5203bdf	145	else if (!lstat(dest_path[0], &st) &&
ac64a722 JS	146	S_ISDIR(st.st_mode)) {
ac64a722 JS	147	dest_path[0] = add_slash(dest_path[0]);
c57f6281	148	destination = internal_copy_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
ac64a722	149	} else {
c7a20c11	150	if (argc != 1)
eac0ccc2	151	die(_("destination '%s' is not a directory"), dest_path[0]);
11be42a4 JS	152	destination = dest_path;
	153	}
	154
	155	/* Checking */
c7a20c11	156	for (i = 0; i < argc; i++) {
60a6bf5f JS	157	const char src = source[i], dst = destination[i];
60a6bf5f JS	158	int length, src_is_dir;
11be42a4 JS	159	const char *bad = NULL;
	160
	161	if (show_only)
431b049e	162	printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
11be42a4	163
60a6bf5f JS	164	length = strlen(src);
60a6bf5f JS	165	if (lstat(src, &st) < 0)
a7d5629f	166	bad = _("bad source");
60a6bf5f JS	167	else if (!strncmp(src, dst, length) &&
60a6bf5f JS	168	(dst[length] == 0 \|\| dst[length] == '/')) {
a7d5629f	169	bad = _("can not move directory into itself");
60a6bf5f JS	170	} else if ((src_is_dir = S_ISDIR(st.st_mode))
60a6bf5f JS	171	&& lstat(dst, &st) == 0)
a7d5629f	172	bad = _("cannot move directory over file");
60a6bf5f	173	else if (src_is_dir) {
b46b15de	174	int first = cache_name_pos(src, length), last;
3af05a6d NTND	175
	176	if (first >= 0)
	177	prepare_move_submodule(src, first,
	178	submodule_gitfile + i);
b46b15de NTND	179	else if (index_range_of_same_dir(src, length,
	180	&first, &last) < 1)
	181	bad = _("source directory is empty");
	182	else { /* last - first >= 1 */
	183	int j, dst_len, n;
11502468 JL	184
11502468 JL	185	modes[i] = WORKING_DIRECTORY;
b46b15de	186	n = argc + last - first;
2756ca43 RS	187	REALLOC_ARRAY(source, n);
	188	REALLOC_ARRAY(destination, n);
	189	REALLOC_ARRAY(modes, n);
	190	REALLOC_ARRAY(submodule_gitfile, n);
b46b15de NTND	191
	192	dst = add_slash(dst);
	193	dst_len = strlen(dst);
	194
	195	for (j = 0; j < last - first; j++) {
	196	const char *path = active_cache[first + j]->name;
	197	source[argc + j] = path;
	198	destination[argc + j] =
	199	prefix_path(dst, dst_len, path + length + 1);
	200	modes[argc + j] = INDEX;
	201	submodule_gitfile[argc + j] = NULL;
ac64a722	202	}
b46b15de	203	argc += last - first;
ac64a722	204	}
5aed3c6a	205	} else if (cache_name_pos(src, length) < 0)
a7d5629f	206	bad = _("not under version control");
baa37bff DT	207	else if (lstat(dst, &st) == 0 &&
baa37bff DT	208	(!ignore_case \|\| strcasecmp(src, dst))) {
a7d5629f	209	bad = _("destination exists");
11be42a4 JS	210	if (force) {
	211	/*
	212	* only files can overwrite each other:
	213	* check both source and destination
	214	*/
81dc2307	215	if (S_ISREG(st.st_mode) \|\| S_ISLNK(st.st_mode)) {
534376ca JK	216	if (verbose)
534376ca JK	217	warning(_("overwriting '%s'"), dst);
11be42a4	218	bad = NULL;
11be42a4	219	} else
a7d5629f	220	bad = _("Cannot overwrite");
11be42a4	221	}
5aed3c6a	222	} else if (string_list_has_string(&src_for_dst, dst))
a7d5629f	223	bad = _("multiple sources for the same target");
a8933469 JS	224	else if (is_dir_sep(dst[strlen(dst) - 1]))
a8933469 JS	225	bad = _("destination directory does not exist");
60a6bf5f	226	else
78a395d3	227	string_list_insert(&src_for_dst, dst);
11be42a4	228
ad1a19d0 NTND	229	if (!bad)
	230	continue;
	231	if (!ignore_errors)
4f1bbd23	232	die(_("%s, source=%s, destination=%s"),
ad1a19d0 NTND	233	bad, src, dst);
	234	if (--argc > 0) {
	235	int n = argc - i;
	236	memmove(source + i, source + i + 1,
	237	n * sizeof(char *));
	238	memmove(destination + i, destination + i + 1,
	239	n * sizeof(char *));
	240	memmove(modes + i, modes + i + 1,
	241	n * sizeof(enum update_mode));
	242	memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
	243	n * sizeof(char *));
	244	i--;
11be42a4 JS	245	}
	246	}
	247
c7a20c11	248	for (i = 0; i < argc; i++) {
60a6bf5f JS	249	const char src = source[i], dst = destination[i];
60a6bf5f JS	250	enum update_mode mode = modes[i];
81dc2307	251	int pos;
11be42a4	252	if (show_only \|\| verbose)
431b049e	253	printf(_("Renaming %s to %s\n"), src, dst);
a88c915d JL	254	if (!show_only && mode != INDEX) {
a88c915d JL	255	if (rename(src, dst) < 0 && !ignore_errors)
4f1bbd23	256	die_errno(_("renaming '%s' failed"), src);
04c1ee57 JL	257	if (submodule_gitfile[i]) {
	258	if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
	259	connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
	260	if (!update_path_in_gitmodules(src, dst))
	261	gitmodules_modified = 1;
	262	}
a88c915d	263	}
60a6bf5f JS	264
60a6bf5f JS	265	if (mode == WORKING_DIRECTORY)
ac64a722 JS	266	continue;
ac64a722 JS	267
81dc2307 PB	268	pos = cache_name_pos(src, strlen(src));
	269	assert(pos >= 0);
	270	if (!show_only)
	271	rename_cache_entry_at(pos, dst);
11be42a4 JS	272	}
11be42a4 JS	273
0656781f JL	274	if (gitmodules_modified)
	275	stage_updated_gitmodules();
	276
dcadc8b8 NTND	277	if (active_cache_changed &&
	278	write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
	279	die(_("Unable to write new index file"));
11be42a4 JS	280
	281	return 0;
	282	}