gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / builtin-mv.c
blob4f65b5ae9baf66953e79886fd93fe31786b24d36
1 /*
2 * "git mv" builtin command
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"
13 static const char * const builtin_mv_usage[] = {
14 "git mv [options] <source>... <destination>",
15 NULL
18 static const char **copy_pathspec(const char *prefix, const char **pathspec,
19 int count, int base_name)
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 if (length > 0 && result[i][length - 1] == '/') {
28 result[i] = xmemdupz(result[i], length - 1);
30 if (base_name) {
31 const char *last_slash = strrchr(result[i], '/');
32 if (last_slash)
33 result[i] = last_slash + 1;
36 return get_pathspec(prefix, result);
39 static const char *add_slash(const char *path)
41 int len = strlen(path);
42 if (path[len - 1] != '/') {
43 char *with_slash = xmalloc(len + 2);
44 memcpy(with_slash, path, len);
45 with_slash[len++] = '/';
46 with_slash[len] = 0;
47 return with_slash;
49 return path;
52 static struct lock_file lock_file;
54 int cmd_mv(int argc, const char **argv, const char *prefix)
56 int i, newfd;
57 int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
58 struct option builtin_mv_options[] = {
59 OPT__DRY_RUN(&show_only),
60 OPT_BOOLEAN('f', NULL, &force, "force move/rename even if target exists"),
61 OPT_BOOLEAN('k', NULL, &ignore_errors, "skip move/rename errors"),
62 OPT_END(),
64 const char **source, **destination, **dest_path;
65 enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
66 struct stat st;
67 struct string_list src_for_dst = {NULL, 0, 0, 0};
69 git_config(git_default_config, NULL);
71 newfd = hold_locked_index(&lock_file, 1);
72 if (read_cache() < 0)
73 die("index file corrupt");
75 argc = parse_options(argc, argv, builtin_mv_options, builtin_mv_usage, 0);
76 if (--argc < 1)
77 usage_with_options(builtin_mv_usage, builtin_mv_options);
79 source = copy_pathspec(prefix, argv, argc, 0);
80 modes = xcalloc(argc, sizeof(enum update_mode));
81 dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
83 if (dest_path[0][0] == '\0')
84 /* special case: "." was normalized to "" */
85 destination = copy_pathspec(dest_path[0], argv, argc, 1);
86 else if (!lstat(dest_path[0], &st) &&
87 S_ISDIR(st.st_mode)) {
88 dest_path[0] = add_slash(dest_path[0]);
89 destination = copy_pathspec(dest_path[0], argv, argc, 1);
90 } else {
91 if (argc != 1)
92 usage_with_options(builtin_mv_usage, builtin_mv_options);
93 destination = dest_path;
96 /* Checking */
97 for (i = 0; i < argc; i++) {
98 const char *src = source[i], *dst = destination[i];
99 int length, src_is_dir;
100 const char *bad = NULL;
102 if (show_only)
103 printf("Checking rename of '%s' to '%s'\n", src, dst);
105 length = strlen(src);
106 if (lstat(src, &st) < 0)
107 bad = "bad source";
108 else if (!strncmp(src, dst, length) &&
109 (dst[length] == 0 || dst[length] == '/')) {
110 bad = "can not move directory into itself";
111 } else if ((src_is_dir = S_ISDIR(st.st_mode))
112 && lstat(dst, &st) == 0)
113 bad = "cannot move directory over file";
114 else if (src_is_dir) {
115 const char *src_w_slash = add_slash(src);
116 int len_w_slash = length + 1;
117 int first, last;
119 modes[i] = WORKING_DIRECTORY;
121 first = cache_name_pos(src_w_slash, len_w_slash);
122 if (first >= 0)
123 die ("Huh? %.*s is in index?",
124 len_w_slash, src_w_slash);
126 first = -1 - first;
127 for (last = first; last < active_nr; last++) {
128 const char *path = active_cache[last]->name;
129 if (strncmp(path, src_w_slash, len_w_slash))
130 break;
132 free((char *)src_w_slash);
134 if (last - first < 1)
135 bad = "source directory is empty";
136 else {
137 int j, dst_len;
139 if (last - first > 0) {
140 source = xrealloc(source,
141 (argc + last - first)
142 * sizeof(char *));
143 destination = xrealloc(destination,
144 (argc + last - first)
145 * sizeof(char *));
146 modes = xrealloc(modes,
147 (argc + last - first)
148 * sizeof(enum update_mode));
151 dst = add_slash(dst);
152 dst_len = strlen(dst);
154 for (j = 0; j < last - first; j++) {
155 const char *path =
156 active_cache[first + j]->name;
157 source[argc + j] = path;
158 destination[argc + j] =
159 prefix_path(dst, dst_len,
160 path + length + 1);
161 modes[argc + j] = INDEX;
163 argc += last - first;
165 } else if (lstat(dst, &st) == 0) {
166 bad = "destination exists";
167 if (force) {
169 * only files can overwrite each other:
170 * check both source and destination
172 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)) {
173 fprintf(stderr, "Warning: %s;"
174 " will overwrite!\n",
175 bad);
176 bad = NULL;
177 } else
178 bad = "Cannot overwrite";
180 } else if (cache_name_pos(src, length) < 0)
181 bad = "not under version control";
182 else if (string_list_has_string(&src_for_dst, dst))
183 bad = "multiple sources for the same target";
184 else
185 string_list_insert(dst, &src_for_dst);
187 if (bad) {
188 if (ignore_errors) {
189 if (--argc > 0) {
190 memmove(source + i, source + i + 1,
191 (argc - i) * sizeof(char *));
192 memmove(destination + i,
193 destination + i + 1,
194 (argc - i) * sizeof(char *));
196 } else
197 die ("%s, source=%s, destination=%s",
198 bad, src, dst);
202 for (i = 0; i < argc; i++) {
203 const char *src = source[i], *dst = destination[i];
204 enum update_mode mode = modes[i];
205 int pos;
206 if (show_only || verbose)
207 printf("Renaming %s to %s\n", src, dst);
208 if (!show_only && mode != INDEX &&
209 rename(src, dst) < 0 && !ignore_errors)
210 die ("renaming %s failed: %s", src, strerror(errno));
212 if (mode == WORKING_DIRECTORY)
213 continue;
215 pos = cache_name_pos(src, strlen(src));
216 assert(pos >= 0);
217 if (!show_only)
218 rename_cache_entry_at(pos, dst);
221 if (active_cache_changed) {
222 if (write_cache(newfd, active_cache, active_nr) ||
223 commit_locked_index(&lock_file))
224 die("Unable to write new index file");
227 return 0;