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[thirdparty/git.git] / builtin / mv.c
CommitLineData
11be42a4
JS
1/*
2 * "git mv" builtin command
3 *
4 * Copyright (C) 2006 Johannes Schindelin
5 */
f8adbec9 6#define USE_THE_INDEX_COMPATIBILITY_MACROS
11be42a4 7#include "builtin.h"
b2141fc1 8#include "config.h"
2ec87741 9#include "pathspec.h"
697cc8ef 10#include "lockfile.h"
11be42a4
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11#include "dir.h"
12#include "cache-tree.h"
c455c87c 13#include "string-list.h"
c7a20c11 14#include "parse-options.h"
a88c915d 15#include "submodule.h"
11be42a4 16
c7a20c11 17static const char * const builtin_mv_usage[] = {
9c9b4f2f 18 N_("git mv [<options>] <source>... <destination>"),
c7a20c11
PH
19 NULL
20};
11be42a4 21
c57f6281
MM
22#define DUP_BASENAME 1
23#define KEEP_TRAILING_SLASH 2
24
2ec87741
BW
25static const char **internal_prefix_pathspec(const char *prefix,
26 const char **pathspec,
27 int count, unsigned flags)
11be42a4 28{
d78b0f3d 29 int i;
b32fa95f 30 const char **result;
2ec87741 31 int prefixlen = prefix ? strlen(prefix) : 0;
b32fa95f 32 ALLOC_ARRAY(result, count + 1);
2ec87741
BW
33
34 /* Create an intermediate copy of the pathspec based on the flags */
d78b0f3d 35 for (i = 0; i < count; i++) {
2ec87741 36 int length = strlen(pathspec[i]);
af82559b 37 int to_copy = length;
2ec87741 38 char *it;
c57f6281 39 while (!(flags & KEEP_TRAILING_SLASH) &&
2ec87741 40 to_copy > 0 && is_dir_sep(pathspec[i][to_copy - 1]))
af82559b 41 to_copy--;
2ec87741
BW
42
43 it = xmemdupz(pathspec[i], to_copy);
44 if (flags & DUP_BASENAME) {
45 result[i] = xstrdup(basename(it));
46 free(it);
47 } else {
48 result[i] = it;
af82559b 49 }
11be42a4 50 }
2ec87741
BW
51 result[count] = NULL;
52
53 /* Prefix the pathspec and free the old intermediate strings */
54 for (i = 0; i < count; i++) {
55 const char *match = prefix_path(prefix, prefixlen, result[i]);
56 free((char *) result[i]);
57 result[i] = match;
58 }
59
60 return result;
11be42a4
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61}
62
ac64a722
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63static const char *add_slash(const char *path)
64{
50a6c8ef 65 size_t len = strlen(path);
ac64a722 66 if (path[len - 1] != '/') {
50a6c8ef 67 char *with_slash = xmalloc(st_add(len, 2));
ac64a722 68 memcpy(with_slash, path, len);
329a3047
JH
69 with_slash[len++] = '/';
70 with_slash[len] = 0;
ac64a722
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71 return with_slash;
72 }
73 return path;
74}
75
04c1ee57 76#define SUBMODULE_WITH_GITDIR ((const char *)1)
11be42a4 77
3af05a6d
NTND
78static void prepare_move_submodule(const char *src, int first,
79 const char **submodule_gitfile)
80{
81 struct strbuf submodule_dotgit = STRBUF_INIT;
82 if (!S_ISGITLINK(active_cache[first]->ce_mode))
83 die(_("Directory %s is in index and no submodule?"), src);
91b83480 84 if (!is_staging_gitmodules_ok(&the_index))
3af05a6d
NTND
85 die(_("Please stage your changes to .gitmodules or stash them to proceed"));
86 strbuf_addf(&submodule_dotgit, "%s/.git", src);
87 *submodule_gitfile = read_gitfile(submodule_dotgit.buf);
88 if (*submodule_gitfile)
89 *submodule_gitfile = xstrdup(*submodule_gitfile);
90 else
91 *submodule_gitfile = SUBMODULE_WITH_GITDIR;
92 strbuf_release(&submodule_dotgit);
93}
94
e2b6cfa0
NTND
95static int index_range_of_same_dir(const char *src, int length,
96 int *first_p, int *last_p)
97{
98 const char *src_w_slash = add_slash(src);
99 int first, last, len_w_slash = length + 1;
100
101 first = cache_name_pos(src_w_slash, len_w_slash);
102 if (first >= 0)
103 die(_("%.*s is in index"), len_w_slash, src_w_slash);
104
105 first = -1 - first;
106 for (last = first; last < active_nr; last++) {
107 const char *path = active_cache[last]->name;
108 if (strncmp(path, src_w_slash, len_w_slash))
109 break;
110 }
111 if (src_w_slash != src)
112 free((char *)src_w_slash);
113 *first_p = first;
114 *last_p = last;
115 return last - first;
116}
117
7061cf0f 118int cmd_mv(int argc, const char **argv, const char *prefix)
11be42a4 119{
189d035e 120 int i, flags, gitmodules_modified = 0;
11be42a4 121 int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
c7a20c11 122 struct option builtin_mv_options[] = {
6c54dc46
NTND
123 OPT__VERBOSE(&verbose, N_("be verbose")),
124 OPT__DRY_RUN(&show_only, N_("dry run")),
61d15cd6
NTND
125 OPT__FORCE(&force, N_("force move/rename even if target exists"),
126 PARSE_OPT_NOCOMPLETE),
d5d09d47 127 OPT_BOOL('k', NULL, &ignore_errors, N_("skip move/rename errors")),
c7a20c11
PH
128 OPT_END(),
129 };
a88c915d 130 const char **source, **destination, **dest_path, **submodule_gitfile;
ac64a722 131 enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
11be42a4 132 struct stat st;
183113a5 133 struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
0fa5a2ed 134 struct lock_file lock_file = LOCK_INIT;
11be42a4 135
ef90d6d4 136 git_config(git_default_config, NULL);
11be42a4 137
37782920
SB
138 argc = parse_options(argc, argv, prefix, builtin_mv_options,
139 builtin_mv_usage, 0);
c7a20c11
PH
140 if (--argc < 1)
141 usage_with_options(builtin_mv_usage, builtin_mv_options);
11be42a4 142
b3e83cc7 143 hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
99caeed0 144 if (read_cache() < 0)
431b049e 145 die(_("index file corrupt"));
99caeed0 146
2ec87741 147 source = internal_prefix_pathspec(prefix, argv, argc, 0);
c7a20c11 148 modes = xcalloc(argc, sizeof(enum update_mode));
c57f6281
MM
149 /*
150 * Keep trailing slash, needed to let
189d035e
JS
151 * "git mv file no-such-dir/" error out, except in the case
152 * "git mv directory no-such-dir/".
c57f6281 153 */
189d035e
JS
154 flags = KEEP_TRAILING_SLASH;
155 if (argc == 1 && is_directory(argv[0]) && !is_directory(argv[1]))
156 flags = 0;
2ec87741 157 dest_path = internal_prefix_pathspec(prefix, argv + argc, 1, flags);
a88c915d 158 submodule_gitfile = xcalloc(argc, sizeof(char *));
11be42a4 159
c5203bdf
JS
160 if (dest_path[0][0] == '\0')
161 /* special case: "." was normalized to "" */
2ec87741 162 destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
c5203bdf 163 else if (!lstat(dest_path[0], &st) &&
ac64a722
JS
164 S_ISDIR(st.st_mode)) {
165 dest_path[0] = add_slash(dest_path[0]);
2ec87741 166 destination = internal_prefix_pathspec(dest_path[0], argv, argc, DUP_BASENAME);
ac64a722 167 } else {
c7a20c11 168 if (argc != 1)
eac0ccc2 169 die(_("destination '%s' is not a directory"), dest_path[0]);
11be42a4
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170 destination = dest_path;
171 }
172
173 /* Checking */
c7a20c11 174 for (i = 0; i < argc; i++) {
60a6bf5f
JS
175 const char *src = source[i], *dst = destination[i];
176 int length, src_is_dir;
11be42a4
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177 const char *bad = NULL;
178
179 if (show_only)
431b049e 180 printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
11be42a4 181
60a6bf5f
JS
182 length = strlen(src);
183 if (lstat(src, &st) < 0)
a7d5629f 184 bad = _("bad source");
60a6bf5f
JS
185 else if (!strncmp(src, dst, length) &&
186 (dst[length] == 0 || dst[length] == '/')) {
a7d5629f 187 bad = _("can not move directory into itself");
60a6bf5f
JS
188 } else if ((src_is_dir = S_ISDIR(st.st_mode))
189 && lstat(dst, &st) == 0)
a7d5629f 190 bad = _("cannot move directory over file");
60a6bf5f 191 else if (src_is_dir) {
b46b15de 192 int first = cache_name_pos(src, length), last;
3af05a6d
NTND
193
194 if (first >= 0)
195 prepare_move_submodule(src, first,
196 submodule_gitfile + i);
b46b15de
NTND
197 else if (index_range_of_same_dir(src, length,
198 &first, &last) < 1)
199 bad = _("source directory is empty");
200 else { /* last - first >= 1 */
201 int j, dst_len, n;
11502468
JL
202
203 modes[i] = WORKING_DIRECTORY;
b46b15de 204 n = argc + last - first;
2756ca43
RS
205 REALLOC_ARRAY(source, n);
206 REALLOC_ARRAY(destination, n);
207 REALLOC_ARRAY(modes, n);
208 REALLOC_ARRAY(submodule_gitfile, n);
b46b15de
NTND
209
210 dst = add_slash(dst);
211 dst_len = strlen(dst);
212
213 for (j = 0; j < last - first; j++) {
214 const char *path = active_cache[first + j]->name;
215 source[argc + j] = path;
216 destination[argc + j] =
217 prefix_path(dst, dst_len, path + length + 1);
218 modes[argc + j] = INDEX;
219 submodule_gitfile[argc + j] = NULL;
ac64a722 220 }
b46b15de 221 argc += last - first;
ac64a722 222 }
5aed3c6a 223 } else if (cache_name_pos(src, length) < 0)
a7d5629f 224 bad = _("not under version control");
baa37bff
DT
225 else if (lstat(dst, &st) == 0 &&
226 (!ignore_case || strcasecmp(src, dst))) {
a7d5629f 227 bad = _("destination exists");
11be42a4
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228 if (force) {
229 /*
230 * only files can overwrite each other:
231 * check both source and destination
232 */
81dc2307 233 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
534376ca
JK
234 if (verbose)
235 warning(_("overwriting '%s'"), dst);
11be42a4 236 bad = NULL;
11be42a4 237 } else
a7d5629f 238 bad = _("Cannot overwrite");
11be42a4 239 }
5aed3c6a 240 } else if (string_list_has_string(&src_for_dst, dst))
a7d5629f 241 bad = _("multiple sources for the same target");
a8933469
JS
242 else if (is_dir_sep(dst[strlen(dst) - 1]))
243 bad = _("destination directory does not exist");
60a6bf5f 244 else
78a395d3 245 string_list_insert(&src_for_dst, dst);
11be42a4 246
ad1a19d0
NTND
247 if (!bad)
248 continue;
249 if (!ignore_errors)
4f1bbd23 250 die(_("%s, source=%s, destination=%s"),
ad1a19d0
NTND
251 bad, src, dst);
252 if (--argc > 0) {
253 int n = argc - i;
254 memmove(source + i, source + i + 1,
255 n * sizeof(char *));
256 memmove(destination + i, destination + i + 1,
257 n * sizeof(char *));
258 memmove(modes + i, modes + i + 1,
259 n * sizeof(enum update_mode));
260 memmove(submodule_gitfile + i, submodule_gitfile + i + 1,
261 n * sizeof(char *));
262 i--;
11be42a4
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263 }
264 }
265
c7a20c11 266 for (i = 0; i < argc; i++) {
60a6bf5f
JS
267 const char *src = source[i], *dst = destination[i];
268 enum update_mode mode = modes[i];
81dc2307 269 int pos;
11be42a4 270 if (show_only || verbose)
431b049e 271 printf(_("Renaming %s to %s\n"), src, dst);
a127331c
SB
272 if (show_only)
273 continue;
274 if (mode != INDEX && rename(src, dst) < 0) {
275 if (ignore_errors)
276 continue;
277 die_errno(_("renaming '%s' failed"), src);
278 }
279 if (submodule_gitfile[i]) {
a127331c
SB
280 if (!update_path_in_gitmodules(src, dst))
281 gitmodules_modified = 1;
da62f786
SB
282 if (submodule_gitfile[i] != SUBMODULE_WITH_GITDIR)
283 connect_work_tree_and_git_dir(dst,
284 submodule_gitfile[i],
285 1);
a88c915d 286 }
60a6bf5f
JS
287
288 if (mode == WORKING_DIRECTORY)
ac64a722
JS
289 continue;
290
81dc2307
PB
291 pos = cache_name_pos(src, strlen(src));
292 assert(pos >= 0);
4cbe92fd 293 rename_cache_entry_at(pos, dst);
11be42a4
JS
294 }
295
0656781f 296 if (gitmodules_modified)
3b8317a9 297 stage_updated_gitmodules(&the_index);
0656781f 298
61000814
299 if (write_locked_index(&the_index, &lock_file,
300 COMMIT_LOCK | SKIP_IF_UNCHANGED))
dcadc8b8 301 die(_("Unable to write new index file"));
11be42a4
JS
302
303 return 0;
304}