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