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