rebase -i: squash should retain the authorship of the _first_ commit
[alt-git.git] / builtin-rm.c
blob9a808c1bf96ec52d836b0a69816f6118f0291a45
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"
12 static const char builtin_rm_usage[] =
13 "git-rm [-f] [-n] [-r] [--cached] [--ignore-unmatch] [--quiet] [--] <file>...";
15 static struct {
16 int nr, alloc;
17 const char **name;
18 } list;
20 static void add_list(const char *name)
22 if (list.nr >= list.alloc) {
23 list.alloc = alloc_nr(list.alloc);
24 list.name = xrealloc(list.name, list.alloc * sizeof(const char *));
26 list.name[list.nr++] = name;
29 static int remove_file(const char *name)
31 int ret;
32 char *slash;
34 ret = unlink(name);
35 if (ret && errno == ENOENT)
36 /* The user has removed it from the filesystem by hand */
37 ret = errno = 0;
39 if (!ret && (slash = strrchr(name, '/'))) {
40 char *n = xstrdup(name);
41 do {
42 n[slash - name] = 0;
43 name = n;
44 } while (!rmdir(name) && (slash = strrchr(name, '/')));
46 return ret;
49 static int check_local_mod(unsigned char *head, int index_only)
51 /* items in list are already sorted in the cache order,
52 * so we could do this a lot more efficiently by using
53 * tree_desc based traversal if we wanted to, but I am
54 * lazy, and who cares if removal of files is a tad
55 * slower than the theoretical maximum speed?
57 int i, no_head;
58 int errs = 0;
60 no_head = is_null_sha1(head);
61 for (i = 0; i < list.nr; i++) {
62 struct stat st;
63 int pos;
64 struct cache_entry *ce;
65 const char *name = list.name[i];
66 unsigned char sha1[20];
67 unsigned mode;
68 int local_changes = 0;
69 int staged_changes = 0;
71 pos = cache_name_pos(name, strlen(name));
72 if (pos < 0)
73 continue; /* removing unmerged entry */
74 ce = active_cache[pos];
76 if (lstat(ce->name, &st) < 0) {
77 if (errno != ENOENT)
78 fprintf(stderr, "warning: '%s': %s",
79 ce->name, strerror(errno));
80 /* It already vanished from the working tree */
81 continue;
83 else if (S_ISDIR(st.st_mode)) {
84 /* if a file was removed and it is now a
85 * directory, that is the same as ENOENT as
86 * far as git is concerned; we do not track
87 * directories.
89 continue;
91 if (ce_match_stat(ce, &st, 0))
92 local_changes = 1;
93 if (no_head
94 || get_tree_entry(head, name, sha1, &mode)
95 || ce->ce_mode != create_ce_mode(mode)
96 || hashcmp(ce->sha1, sha1))
97 staged_changes = 1;
99 if (local_changes && staged_changes)
100 errs = error("'%s' has staged content different "
101 "from both the file and the HEAD\n"
102 "(use -f to force removal)", name);
103 else if (!index_only) {
104 /* It's not dangerous to git-rm --cached a
105 * file if the index matches the file or the
106 * HEAD, since it means the deleted content is
107 * still available somewhere.
109 if (staged_changes)
110 errs = error("'%s' has changes staged in the index\n"
111 "(use --cached to keep the file, "
112 "or -f to force removal)", name);
113 if (local_changes)
114 errs = error("'%s' has local modifications\n"
115 "(use --cached to keep the file, "
116 "or -f to force removal)", name);
119 return errs;
122 static struct lock_file lock_file;
124 int cmd_rm(int argc, const char **argv, const char *prefix)
126 int i, newfd;
127 int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0;
128 int ignore_unmatch = 0;
129 const char **pathspec;
130 char *seen;
132 git_config(git_default_config);
134 newfd = hold_locked_index(&lock_file, 1);
136 if (read_cache() < 0)
137 die("index file corrupt");
139 for (i = 1 ; i < argc ; i++) {
140 const char *arg = argv[i];
142 if (*arg != '-')
143 break;
144 else if (!strcmp(arg, "--")) {
145 i++;
146 break;
148 else if (!strcmp(arg, "-n"))
149 show_only = 1;
150 else if (!strcmp(arg, "--cached"))
151 index_only = 1;
152 else if (!strcmp(arg, "-f"))
153 force = 1;
154 else if (!strcmp(arg, "-r"))
155 recursive = 1;
156 else if (!strcmp(arg, "--quiet"))
157 quiet = 1;
158 else if (!strcmp(arg, "--ignore-unmatch"))
159 ignore_unmatch = 1;
160 else
161 usage(builtin_rm_usage);
163 if (argc <= i)
164 usage(builtin_rm_usage);
166 pathspec = get_pathspec(prefix, argv + i);
167 seen = NULL;
168 for (i = 0; pathspec[i] ; i++)
169 /* nothing */;
170 seen = xcalloc(i, 1);
172 for (i = 0; i < active_nr; i++) {
173 struct cache_entry *ce = active_cache[i];
174 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
175 continue;
176 add_list(ce->name);
179 if (pathspec) {
180 const char *match;
181 int seen_any = 0;
182 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
183 if (!seen[i]) {
184 if (!ignore_unmatch) {
185 die("pathspec '%s' did not match any files",
186 match);
189 else {
190 seen_any = 1;
192 if (!recursive && seen[i] == MATCHED_RECURSIVELY)
193 die("not removing '%s' recursively without -r",
194 *match ? match : ".");
197 if (! seen_any)
198 exit(0);
202 * If not forced, the file, the index and the HEAD (if exists)
203 * must match; but the file can already been removed, since
204 * this sequence is a natural "novice" way:
206 * rm F; git rm F
208 * Further, if HEAD commit exists, "diff-index --cached" must
209 * report no changes unless forced.
211 if (!force) {
212 unsigned char sha1[20];
213 if (get_sha1("HEAD", sha1))
214 hashclr(sha1);
215 if (check_local_mod(sha1, index_only))
216 exit(1);
220 * First remove the names from the index: we won't commit
221 * the index unless all of them succeed.
223 for (i = 0; i < list.nr; i++) {
224 const char *path = list.name[i];
225 if (!quiet)
226 printf("rm '%s'\n", path);
228 if (remove_file_from_cache(path))
229 die("git-rm: unable to remove %s", path);
230 cache_tree_invalidate_path(active_cache_tree, path);
233 if (show_only)
234 return 0;
237 * Then, unless we used "--cached", remove the filenames from
238 * the workspace. If we fail to remove the first one, we
239 * abort the "git rm" (but once we've successfully removed
240 * any file at all, we'll go ahead and commit to it all:
241 * by then we've already committed ourselves and can't fail
242 * in the middle)
244 if (!index_only) {
245 int removed = 0;
246 for (i = 0; i < list.nr; i++) {
247 const char *path = list.name[i];
248 if (!remove_file(path)) {
249 removed = 1;
250 continue;
252 if (!removed)
253 die("git-rm: %s: %s", path, strerror(errno));
257 if (active_cache_changed) {
258 if (write_cache(newfd, active_cache, active_nr) ||
259 close(newfd) || commit_locked_index(&lock_file))
260 die("Unable to write new index file");
263 return 0;