add 'git credential' plumbing command
[git/git.git] / builtin / mv.c
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
13 static const char * const builtin_mv_usage[] = {
14 "git mv [options] <source>... <destination>",
15 NULL
16 };
17
18 static const char **copy_pathspec(const char *prefix, const char **pathspec,
19 int count, int base_name)
20 {
21 int i;
22 const char **result = xmalloc((count + 1) * sizeof(const char *));
23 memcpy(result, pathspec, count * sizeof(const char *));
24 result[count] = NULL;
25 for (i = 0; i < count; i++) {
26 int length = strlen(result[i]);
27 int to_copy = length;
28 while (to_copy > 0 && is_dir_sep(result[i][to_copy - 1]))
29 to_copy--;
30 if (to_copy != length || base_name) {
31 char *it = xmemdupz(result[i], to_copy);
32 if (base_name) {
33 result[i] = xstrdup(basename(it));
34 free(it);
35 } else
36 result[i] = it;
37 }
38 }
39 return get_pathspec(prefix, result);
40 }
41
42 static const char *add_slash(const char *path)
43 {
44 int len = strlen(path);
45 if (path[len - 1] != '/') {
46 char *with_slash = xmalloc(len + 2);
47 memcpy(with_slash, path, len);
48 with_slash[len++] = '/';
49 with_slash[len] = 0;
50 return with_slash;
51 }
52 return path;
53 }
54
55 static struct lock_file lock_file;
56
57 int cmd_mv(int argc, const char **argv, const char *prefix)
58 {
59 int i, newfd;
60 int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
61 struct option builtin_mv_options[] = {
62 OPT__VERBOSE(&verbose, "be verbose"),
63 OPT__DRY_RUN(&show_only, "dry run"),
64 OPT__FORCE(&force, "force move/rename even if target exists"),
65 OPT_BOOLEAN('k', NULL, &ignore_errors, "skip move/rename errors"),
66 OPT_END(),
67 };
68 const char **source, **destination, **dest_path;
69 enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
70 struct stat st;
71 struct string_list src_for_dst = STRING_LIST_INIT_NODUP;
72
73 git_config(git_default_config, NULL);
74
75 argc = parse_options(argc, argv, prefix, builtin_mv_options,
76 builtin_mv_usage, 0);
77 if (--argc < 1)
78 usage_with_options(builtin_mv_usage, builtin_mv_options);
79
80 newfd = hold_locked_index(&lock_file, 1);
81 if (read_cache() < 0)
82 die(_("index file corrupt"));
83
84 source = copy_pathspec(prefix, argv, argc, 0);
85 modes = xcalloc(argc, sizeof(enum update_mode));
86 dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
87
88 if (dest_path[0][0] == '\0')
89 /* special case: "." was normalized to "" */
90 destination = copy_pathspec(dest_path[0], argv, argc, 1);
91 else if (!lstat(dest_path[0], &st) &&
92 S_ISDIR(st.st_mode)) {
93 dest_path[0] = add_slash(dest_path[0]);
94 destination = copy_pathspec(dest_path[0], argv, argc, 1);
95 } else {
96 if (argc != 1)
97 die("destination '%s' is not a directory", dest_path[0]);
98 destination = dest_path;
99 }
100
101 /* Checking */
102 for (i = 0; i < argc; i++) {
103 const char *src = source[i], *dst = destination[i];
104 int length, src_is_dir;
105 const char *bad = NULL;
106
107 if (show_only)
108 printf(_("Checking rename of '%s' to '%s'\n"), src, dst);
109
110 length = strlen(src);
111 if (lstat(src, &st) < 0)
112 bad = _("bad source");
113 else if (!strncmp(src, dst, length) &&
114 (dst[length] == 0 || dst[length] == '/')) {
115 bad = _("can not move directory into itself");
116 } else if ((src_is_dir = S_ISDIR(st.st_mode))
117 && lstat(dst, &st) == 0)
118 bad = _("cannot move directory over file");
119 else if (src_is_dir) {
120 const char *src_w_slash = add_slash(src);
121 int len_w_slash = length + 1;
122 int first, last;
123
124 modes[i] = WORKING_DIRECTORY;
125
126 first = cache_name_pos(src_w_slash, len_w_slash);
127 if (first >= 0)
128 die (_("Huh? %.*s is in index?"),
129 len_w_slash, src_w_slash);
130
131 first = -1 - first;
132 for (last = first; last < active_nr; last++) {
133 const char *path = active_cache[last]->name;
134 if (strncmp(path, src_w_slash, len_w_slash))
135 break;
136 }
137 free((char *)src_w_slash);
138
139 if (last - first < 1)
140 bad = _("source directory is empty");
141 else {
142 int j, dst_len;
143
144 if (last - first > 0) {
145 source = xrealloc(source,
146 (argc + last - first)
147 * sizeof(char *));
148 destination = xrealloc(destination,
149 (argc + last - first)
150 * sizeof(char *));
151 modes = xrealloc(modes,
152 (argc + last - first)
153 * sizeof(enum update_mode));
154 }
155
156 dst = add_slash(dst);
157 dst_len = strlen(dst);
158
159 for (j = 0; j < last - first; j++) {
160 const char *path =
161 active_cache[first + j]->name;
162 source[argc + j] = path;
163 destination[argc + j] =
164 prefix_path(dst, dst_len,
165 path + length + 1);
166 modes[argc + j] = INDEX;
167 }
168 argc += last - first;
169 }
170 } else if (cache_name_pos(src, length) < 0)
171 bad = _("not under version control");
172 else if (lstat(dst, &st) == 0) {
173 bad = _("destination exists");
174 if (force) {
175 /*
176 * only files can overwrite each other:
177 * check both source and destination
178 */
179 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
180 if (verbose)
181 warning(_("overwriting '%s'"), dst);
182 bad = NULL;
183 } else
184 bad = _("Cannot overwrite");
185 }
186 } else if (string_list_has_string(&src_for_dst, dst))
187 bad = _("multiple sources for the same target");
188 else
189 string_list_insert(&src_for_dst, dst);
190
191 if (bad) {
192 if (ignore_errors) {
193 if (--argc > 0) {
194 memmove(source + i, source + i + 1,
195 (argc - i) * sizeof(char *));
196 memmove(destination + i,
197 destination + i + 1,
198 (argc - i) * sizeof(char *));
199 i--;
200 }
201 } else
202 die (_("%s, source=%s, destination=%s"),
203 bad, src, dst);
204 }
205 }
206
207 for (i = 0; i < argc; i++) {
208 const char *src = source[i], *dst = destination[i];
209 enum update_mode mode = modes[i];
210 int pos;
211 if (show_only || verbose)
212 printf(_("Renaming %s to %s\n"), src, dst);
213 if (!show_only && mode != INDEX &&
214 rename(src, dst) < 0 && !ignore_errors)
215 die_errno (_("renaming '%s' failed"), src);
216
217 if (mode == WORKING_DIRECTORY)
218 continue;
219
220 pos = cache_name_pos(src, strlen(src));
221 assert(pos >= 0);
222 if (!show_only)
223 rename_cache_entry_at(pos, dst);
224 }
225
226 if (active_cache_changed) {
227 if (write_cache(newfd, active_cache, active_nr) ||
228 commit_locked_index(&lock_file))
229 die(_("Unable to write new index file"));
230 }
231
232 return 0;
233 }