gitweb: use new Git::Repo API, and add optional caching
[git/gitweb-caching.git] / builtin-rm.c
blob0ed26bb8f10062185b9476815f17c2902461e47d
1 /*
2 * "git rm" builtin command
4 * Copyright (C) Linus Torvalds 2006
5 */
6 #include "cache.h"
7 #include "builtin.h"
8 #include "dir.h"
9 #include "cache-tree.h"
10 #include "tree-walk.h"
11 #include "parse-options.h"
13 static const char * const builtin_rm_usage[] = {
14 "git rm [options] [--] <file>...",
15 NULL
18 static struct {
19 int nr, alloc;
20 const char **name;
21 } list;
23 static void add_list(const char *name)
25 if (list.nr >= list.alloc) {
26 list.alloc = alloc_nr(list.alloc);
27 list.name = xrealloc(list.name, list.alloc * sizeof(const char *));
29 list.name[list.nr++] = name;
32 static int remove_file(const char *name)
34 int ret;
35 char *slash;
37 ret = unlink(name);
38 if (ret && errno == ENOENT)
39 /* The user has removed it from the filesystem by hand */
40 ret = errno = 0;
42 if (!ret && (slash = strrchr(name, '/'))) {
43 char *n = xstrdup(name);
44 do {
45 n[slash - name] = 0;
46 name = n;
47 } while (!rmdir(name) && (slash = strrchr(name, '/')));
49 return ret;
52 static int check_local_mod(unsigned char *head, int index_only)
54 /* items in list are already sorted in the cache order,
55 * so we could do this a lot more efficiently by using
56 * tree_desc based traversal if we wanted to, but I am
57 * lazy, and who cares if removal of files is a tad
58 * slower than the theoretical maximum speed?
60 int i, no_head;
61 int errs = 0;
63 no_head = is_null_sha1(head);
64 for (i = 0; i < list.nr; i++) {
65 struct stat st;
66 int pos;
67 struct cache_entry *ce;
68 const char *name = list.name[i];
69 unsigned char sha1[20];
70 unsigned mode;
71 int local_changes = 0;
72 int staged_changes = 0;
74 pos = cache_name_pos(name, strlen(name));
75 if (pos < 0)
76 continue; /* removing unmerged entry */
77 ce = active_cache[pos];
79 if (lstat(ce->name, &st) < 0) {
80 if (errno != ENOENT)
81 fprintf(stderr, "warning: '%s': %s",
82 ce->name, strerror(errno));
83 /* It already vanished from the working tree */
84 continue;
86 else if (S_ISDIR(st.st_mode)) {
87 /* if a file was removed and it is now a
88 * directory, that is the same as ENOENT as
89 * far as git is concerned; we do not track
90 * directories.
92 continue;
94 if (ce_match_stat(ce, &st, 0))
95 local_changes = 1;
96 if (no_head
97 || get_tree_entry(head, name, sha1, &mode)
98 || ce->ce_mode != create_ce_mode(mode)
99 || hashcmp(ce->sha1, sha1))
100 staged_changes = 1;
102 if (local_changes && staged_changes)
103 errs = error("'%s' has staged content different "
104 "from both the file and the HEAD\n"
105 "(use -f to force removal)", name);
106 else if (!index_only) {
107 /* It's not dangerous to git-rm --cached a
108 * file if the index matches the file or the
109 * HEAD, since it means the deleted content is
110 * still available somewhere.
112 if (staged_changes)
113 errs = error("'%s' has changes staged in the index\n"
114 "(use --cached to keep the file, "
115 "or -f to force removal)", name);
116 if (local_changes)
117 errs = error("'%s' has local modifications\n"
118 "(use --cached to keep the file, "
119 "or -f to force removal)", name);
122 return errs;
125 static struct lock_file lock_file;
127 static int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0;
128 static int ignore_unmatch = 0;
130 static struct option builtin_rm_options[] = {
131 OPT__DRY_RUN(&show_only),
132 OPT__QUIET(&quiet),
133 OPT_BOOLEAN( 0 , "cached", &index_only, "only remove from the index"),
134 OPT_BOOLEAN('f', "force", &force, "override the up-to-date check"),
135 OPT_BOOLEAN('r', NULL, &recursive, "allow recursive removal"),
136 OPT_BOOLEAN( 0 , "ignore-unmatch", &ignore_unmatch,
137 "exit with a zero status even if nothing matched"),
138 OPT_END(),
141 int cmd_rm(int argc, const char **argv, const char *prefix)
143 int i, newfd;
144 const char **pathspec;
145 char *seen;
147 git_config(git_default_config, NULL);
149 argc = parse_options(argc, argv, builtin_rm_options, builtin_rm_usage, 0);
150 if (!argc)
151 usage_with_options(builtin_rm_usage, builtin_rm_options);
153 if (!index_only)
154 setup_work_tree();
156 newfd = hold_locked_index(&lock_file, 1);
158 if (read_cache() < 0)
159 die("index file corrupt");
161 pathspec = get_pathspec(prefix, argv);
162 seen = NULL;
163 for (i = 0; pathspec[i] ; i++)
164 /* nothing */;
165 seen = xcalloc(i, 1);
167 for (i = 0; i < active_nr; i++) {
168 struct cache_entry *ce = active_cache[i];
169 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
170 continue;
171 add_list(ce->name);
174 if (pathspec) {
175 const char *match;
176 int seen_any = 0;
177 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
178 if (!seen[i]) {
179 if (!ignore_unmatch) {
180 die("pathspec '%s' did not match any files",
181 match);
184 else {
185 seen_any = 1;
187 if (!recursive && seen[i] == MATCHED_RECURSIVELY)
188 die("not removing '%s' recursively without -r",
189 *match ? match : ".");
192 if (! seen_any)
193 exit(0);
197 * If not forced, the file, the index and the HEAD (if exists)
198 * must match; but the file can already been removed, since
199 * this sequence is a natural "novice" way:
201 * rm F; git rm F
203 * Further, if HEAD commit exists, "diff-index --cached" must
204 * report no changes unless forced.
206 if (!force) {
207 unsigned char sha1[20];
208 if (get_sha1("HEAD", sha1))
209 hashclr(sha1);
210 if (check_local_mod(sha1, index_only))
211 exit(1);
215 * First remove the names from the index: we won't commit
216 * the index unless all of them succeed.
218 for (i = 0; i < list.nr; i++) {
219 const char *path = list.name[i];
220 if (!quiet)
221 printf("rm '%s'\n", path);
223 if (remove_file_from_cache(path))
224 die("git-rm: unable to remove %s", path);
227 if (show_only)
228 return 0;
231 * Then, unless we used "--cached", remove the filenames from
232 * the workspace. If we fail to remove the first one, we
233 * abort the "git rm" (but once we've successfully removed
234 * any file at all, we'll go ahead and commit to it all:
235 * by then we've already committed ourselves and can't fail
236 * in the middle)
238 if (!index_only) {
239 int removed = 0;
240 for (i = 0; i < list.nr; i++) {
241 const char *path = list.name[i];
242 if (!remove_file(path)) {
243 removed = 1;
244 continue;
246 if (!removed)
247 die("git-rm: %s: %s", path, strerror(errno));
251 if (active_cache_changed) {
252 if (write_cache(newfd, active_cache, active_nr) ||
253 commit_locked_index(&lock_file))
254 die("Unable to write new index file");
257 return 0;