[git/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
};

static const char **internal_copy_pathspec(const char *prefix,
					   const char **pathspec,
					   int count, int base_name)
{
	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 (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
			to_copy--;
		if (to_copy != length || base_name) {
			char *it = xmemdupz(result[i], to_copy);
			if (base_name) {
				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;

int cmd_mv(int argc, const char **argv, const char *prefix)
{
	int i, newfd, 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);

	newfd = 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));
	dest_path = internal_copy_pathspec(prefix, argv + argc, 1, 0);
	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, 1);
	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, 1);
	} 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);
			if (first >= 0) {
				struct strbuf submodule_dotgit = STRBUF_INIT;
				if (!S_ISGITLINK(active_cache[first]->ce_mode))
					die (_("Huh? 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[i] = read_gitfile(submodule_dotgit.buf);
				if (submodule_gitfile[i])
					submodule_gitfile[i] = xstrdup(submodule_gitfile[i]);
				strbuf_release(&submodule_dotgit);
			} else {
				const char *src_w_slash = add_slash(src);
				int last, len_w_slash = length + 1;

				modes[i] = WORKING_DIRECTORY;

				first = cache_name_pos(src_w_slash, len_w_slash);
				if (first >= 0)
					die (_("Huh? %.*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;
				}
				free((char *)src_w_slash);

				if (last - first < 1)
					bad = _("source directory is empty");
				else {
					int j, dst_len;

					if (last - first > 0) {
						source = xrealloc(source,
								(argc + last - first)
								* sizeof(char *));
						destination = xrealloc(destination,
								(argc + last - first)
								* sizeof(char *));
						modes = xrealloc(modes,
								(argc + last - first)
								* sizeof(enum update_mode));
					}

					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;
					}
					argc += last - first;
				}
			}
		} else if (cache_name_pos(src, length) < 0)
			bad = _("not under version control");
		else if (lstat(dst, &st) == 0) {
			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
			string_list_insert(&src_for_dst, dst);

		if (bad) {
			if (ignore_errors) {
				if (--argc > 0) {
					memmove(source + i, source + i + 1,
						(argc - i) * sizeof(char *));
					memmove(destination + i,
						destination + i + 1,
						(argc - i) * sizeof(char *));
					i--;
				}
			} else
				die (_("%s, source=%s, destination=%s"),
				     bad, src, dst);
		}
	}

	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])
				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) {
		if (write_cache(newfd, active_cache, active_nr) ||
		    commit_locked_index(&lock_file))
			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
e4d92cdc NTND	19	static const char *internal_copy_pathspec(const char prefix,
	20	const char **pathspec,
	21	int count, int base_name)
11be42a4	22	{
d78b0f3d	23	int i;
11be42a4 JS	24	const char *result = xmalloc((count + 1) sizeof(const char *));
	25	memcpy(result, pathspec, count * sizeof(const char *));
	26	result[count] = NULL;
d78b0f3d JS	27	for (i = 0; i < count; i++) {
d78b0f3d JS	28	int length = strlen(result[i]);
af82559b JH	29	int to_copy = length;
	30	while (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
	31	to_copy--;
	32	if (to_copy != length \|\| base_name) {
	33	char *it = xmemdupz(result[i], to_copy);
0d0ff65c BC	34	if (base_name) {
	35	result[i] = xstrdup(basename(it));
	36	free(it);
	37	} else
	38	result[i] = it;
af82559b	39	}
11be42a4	40	}
971dfa19	41	return get_pathspec(prefix, result);
11be42a4 JS	42	}
11be42a4 JS	43
ac64a722 JS	44	static const char add_slash(const char path)
	45	{
	46	int len = strlen(path);
	47	if (path[len - 1] != '/') {
	48	char *with_slash = xmalloc(len + 2);
	49	memcpy(with_slash, path, len);
329a3047 JH	50	with_slash[len++] = '/';
329a3047 JH	51	with_slash[len] = 0;
ac64a722 JS	52	return with_slash;
	53	}
	54	return path;
	55	}
	56
11be42a4 JS	57	static struct lock_file lock_file;
11be42a4 JS	58
7061cf0f	59	int cmd_mv(int argc, const char *argv, const char prefix)
11be42a4	60	{
0656781f	61	int i, newfd, gitmodules_modified = 0;
11be42a4	62	int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
c7a20c11	63	struct option builtin_mv_options[] = {
6c54dc46 NTND	64	OPT__VERBOSE(&verbose, N_("be verbose")),
	65	OPT__DRY_RUN(&show_only, N_("dry run")),
	66	OPT__FORCE(&force, N_("force move/rename even if target exists")),
d5d09d47	67	OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
c7a20c11 PH	68	OPT_END(),
c7a20c11 PH	69	};
a88c915d	70	const char source, destination, dest_path, submodule_gitfile;
ac64a722	71	enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
11be42a4	72	struct stat st;
183113a5	73	struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
11be42a4	74
0656781f	75	gitmodules_config();
ef90d6d4	76	git_config(git_default_config, NULL);
11be42a4	77
37782920 SB	78	argc = parse_options(argc, argv, prefix, builtin_mv_options,
37782920 SB	79	builtin_mv_usage, 0);
c7a20c11 PH	80	if (--argc < 1)
c7a20c11 PH	81	usage_with_options(builtin_mv_usage, builtin_mv_options);
11be42a4	82
99caeed0 JN	83	newfd = hold_locked_index(&lock_file, 1);
99caeed0 JN	84	if (read_cache() < 0)
431b049e	85	die(_("index file corrupt"));
99caeed0	86
e4d92cdc	87	source = internal_copy_pathspec(prefix, argv, argc, 0);
c7a20c11	88	modes = xcalloc(argc, sizeof(enum update_mode));
e4d92cdc	89	dest_path = internal_copy_pathspec(prefix, argv + argc, 1, 0);
a88c915d	90	submodule_gitfile = xcalloc(argc, sizeof(char *));
11be42a4	91
c5203bdf JS	92	if (dest_path[0][0] == '\0')
c5203bdf JS	93	/* special case: "." was normalized to "" */
e4d92cdc	94	destination = internal_copy_pathspec(dest_path[0], argv, argc, 1);
c5203bdf	95	else if (!lstat(dest_path[0], &st) &&
ac64a722 JS	96	S_ISDIR(st.st_mode)) {
ac64a722 JS	97	dest_path[0] = add_slash(dest_path[0]);
e4d92cdc	98	destination = internal_copy_pathspec(dest_path[0], argv, argc, 1);
ac64a722	99	} else {
c7a20c11	100	if (argc != 1)
77471646	101	die("destination '%s' is not a directory", dest_path[0]);
11be42a4 JS	102	destination = dest_path;
	103	}
	104
	105	/* Checking */
c7a20c11	106	for (i = 0; i < argc; i++) {
60a6bf5f JS	107	const char src = source[i], dst = destination[i];
60a6bf5f JS	108	int length, src_is_dir;
11be42a4 JS	109	const char *bad = NULL;
	110
	111	if (show_only)
431b049e	112	printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
11be42a4	113
60a6bf5f JS	114	length = strlen(src);
60a6bf5f JS	115	if (lstat(src, &st) < 0)
a7d5629f	116	bad = _("bad source");
60a6bf5f JS	117	else if (!strncmp(src, dst, length) &&
60a6bf5f JS	118	(dst[length] == 0 \|\| dst[length] == '/')) {
a7d5629f	119	bad = _("can not move directory into itself");
60a6bf5f JS	120	} else if ((src_is_dir = S_ISDIR(st.st_mode))
60a6bf5f JS	121	&& lstat(dst, &st) == 0)
a7d5629f	122	bad = _("cannot move directory over file");
60a6bf5f	123	else if (src_is_dir) {
11502468 JL	124	int first = cache_name_pos(src, length);
11502468 JL	125	if (first >= 0) {
a88c915d	126	struct strbuf submodule_dotgit = STRBUF_INIT;
11502468 JL	127	if (!S_ISGITLINK(active_cache[first]->ce_mode))
11502468 JL	128	die (_("Huh? Directory %s is in index and no submodule?"), src);
0656781f JL	129	if (!is_staging_gitmodules_ok())
0656781f JL	130	die (_("Please, stage your changes to .gitmodules or stash them to proceed"));
a88c915d JL	131	strbuf_addf(&submodule_dotgit, "%s/.git", src);
	132	submodule_gitfile[i] = read_gitfile(submodule_dotgit.buf);
	133	if (submodule_gitfile[i])
	134	submodule_gitfile[i] = xstrdup(submodule_gitfile[i]);
	135	strbuf_release(&submodule_dotgit);
11502468 JL	136	} else {
	137	const char *src_w_slash = add_slash(src);
	138	int last, len_w_slash = length + 1;
	139
	140	modes[i] = WORKING_DIRECTORY;
	141
	142	first = cache_name_pos(src_w_slash, len_w_slash);
	143	if (first >= 0)
	144	die (_("Huh? %.*s is in index?"),
	145	len_w_slash, src_w_slash);
	146
	147	first = -1 - first;
	148	for (last = first; last < active_nr; last++) {
	149	const char *path = active_cache[last]->name;
	150	if (strncmp(path, src_w_slash, len_w_slash))
	151	break;
ac64a722	152	}
11502468 JL	153	free((char *)src_w_slash);
	154
	155	if (last - first < 1)
	156	bad = _("source directory is empty");
	157	else {
	158	int j, dst_len;
ac64a722	159
11502468 JL	160	if (last - first > 0) {
	161	source = xrealloc(source,
	162	(argc + last - first)
	163	* sizeof(char *));
	164	destination = xrealloc(destination,
	165	(argc + last - first)
	166	* sizeof(char *));
	167	modes = xrealloc(modes,
	168	(argc + last - first)
	169	* sizeof(enum update_mode));
	170	}
	171
	172	dst = add_slash(dst);
	173	dst_len = strlen(dst);
	174
	175	for (j = 0; j < last - first; j++) {
	176	const char *path =
	177	active_cache[first + j]->name;
	178	source[argc + j] = path;
	179	destination[argc + j] =
	180	prefix_path(dst, dst_len,
	181	path + length + 1);
	182	modes[argc + j] = INDEX;
	183	}
	184	argc += last - first;
ac64a722	185	}
ac64a722	186	}
5aed3c6a	187	} else if (cache_name_pos(src, length) < 0)
a7d5629f	188	bad = _("not under version control");
5aed3c6a	189	else if (lstat(dst, &st) == 0) {
a7d5629f	190	bad = _("destination exists");
11be42a4 JS	191	if (force) {
	192	/*
	193	* only files can overwrite each other:
	194	* check both source and destination
	195	*/
81dc2307	196	if (S_ISREG(st.st_mode) \|\| S_ISLNK(st.st_mode)) {
534376ca JK	197	if (verbose)
534376ca JK	198	warning(_("overwriting '%s'"), dst);
11be42a4	199	bad = NULL;
11be42a4	200	} else
a7d5629f	201	bad = _("Cannot overwrite");
11be42a4	202	}
5aed3c6a	203	} else if (string_list_has_string(&src_for_dst, dst))
a7d5629f	204	bad = _("multiple sources for the same target");
60a6bf5f	205	else
78a395d3	206	string_list_insert(&src_for_dst, dst);
11be42a4	207
11be42a4 JS	208	if (bad) {
11be42a4 JS	209	if (ignore_errors) {
c7a20c11	210	if (--argc > 0) {
11be42a4	211	memmove(source + i, source + i + 1,
c7a20c11	212	(argc - i) * sizeof(char *));
11be42a4 JS	213	memmove(destination + i,
11be42a4 JS	214	destination + i + 1,
c7a20c11	215	(argc - i) * sizeof(char *));
be17262d	216	i--;
11be42a4 JS	217	}
11be42a4 JS	218	} else
431b049e	219	die (_("%s, source=%s, destination=%s"),
60a6bf5f	220	bad, src, dst);
11be42a4 JS	221	}
	222	}
	223
c7a20c11	224	for (i = 0; i < argc; i++) {
60a6bf5f JS	225	const char src = source[i], dst = destination[i];
60a6bf5f JS	226	enum update_mode mode = modes[i];
81dc2307	227	int pos;
11be42a4	228	if (show_only \|\| verbose)
431b049e	229	printf(_("Renaming %s to %s\n"), src, dst);
a88c915d JL	230	if (!show_only && mode != INDEX) {
	231	if (rename(src, dst) < 0 && !ignore_errors)
	232	die_errno (_("renaming '%s' failed"), src);
	233	if (submodule_gitfile[i])
	234	connect_work_tree_and_git_dir(dst, submodule_gitfile[i]);
0656781f JL	235	if (!update_path_in_gitmodules(src, dst))
0656781f JL	236	gitmodules_modified = 1;
a88c915d	237	}
60a6bf5f JS	238
60a6bf5f JS	239	if (mode == WORKING_DIRECTORY)
ac64a722 JS	240	continue;
ac64a722 JS	241
81dc2307 PB	242	pos = cache_name_pos(src, strlen(src));
	243	assert(pos >= 0);
	244	if (!show_only)
	245	rename_cache_entry_at(pos, dst);
11be42a4 JS	246	}
11be42a4 JS	247
0656781f JL	248	if (gitmodules_modified)
	249	stage_updated_gitmodules();
	250
81dc2307 PB	251	if (active_cache_changed) {
	252	if (write_cache(newfd, active_cache, active_nr) \|\|
	253	commit_locked_index(&lock_file))
431b049e	254	die(_("Unable to write new index file"));
11be42a4 JS	255	}
	256
	257	return 0;
	258	}