git-send-email: Add --thread option
[git/aroben.git] / builtin-rm.c
blob4a0bd93c8b3b644fb86ce05686b09d79b180bffc
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)
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;
69 pos = cache_name_pos(name, strlen(name));
70 if (pos < 0)
71 continue; /* removing unmerged entry */
72 ce = active_cache[pos];
74 if (lstat(ce->name, &st) < 0) {
75 if (errno != ENOENT)
76 fprintf(stderr, "warning: '%s': %s",
77 ce->name, strerror(errno));
78 /* It already vanished from the working tree */
79 continue;
81 else if (S_ISDIR(st.st_mode)) {
82 /* if a file was removed and it is now a
83 * directory, that is the same as ENOENT as
84 * far as git is concerned; we do not track
85 * directories.
87 continue;
89 if (ce_match_stat(ce, &st, 0))
90 errs = error("'%s' has local modifications "
91 "(hint: try -f)", ce->name);
92 if (no_head
93 || get_tree_entry(head, name, sha1, &mode)
94 || ce->ce_mode != create_ce_mode(mode)
95 || hashcmp(ce->sha1, sha1))
96 errs = error("'%s' has changes staged in the index "
97 "(hint: try -f)", name);
99 return errs;
102 static struct lock_file lock_file;
104 int cmd_rm(int argc, const char **argv, const char *prefix)
106 int i, newfd;
107 int show_only = 0, force = 0, index_only = 0, recursive = 0, quiet = 0;
108 int ignore_unmatch = 0;
109 const char **pathspec;
110 char *seen;
112 git_config(git_default_config);
114 newfd = hold_locked_index(&lock_file, 1);
116 if (read_cache() < 0)
117 die("index file corrupt");
119 for (i = 1 ; i < argc ; i++) {
120 const char *arg = argv[i];
122 if (*arg != '-')
123 break;
124 else if (!strcmp(arg, "--")) {
125 i++;
126 break;
128 else if (!strcmp(arg, "-n"))
129 show_only = 1;
130 else if (!strcmp(arg, "--cached"))
131 index_only = 1;
132 else if (!strcmp(arg, "-f"))
133 force = 1;
134 else if (!strcmp(arg, "-r"))
135 recursive = 1;
136 else if (!strcmp(arg, "--quiet"))
137 quiet = 1;
138 else if (!strcmp(arg, "--ignore-unmatch"))
139 ignore_unmatch = 1;
140 else
141 usage(builtin_rm_usage);
143 if (argc <= i)
144 usage(builtin_rm_usage);
146 pathspec = get_pathspec(prefix, argv + i);
147 seen = NULL;
148 for (i = 0; pathspec[i] ; i++)
149 /* nothing */;
150 seen = xcalloc(i, 1);
152 for (i = 0; i < active_nr; i++) {
153 struct cache_entry *ce = active_cache[i];
154 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
155 continue;
156 add_list(ce->name);
159 if (pathspec) {
160 const char *match;
161 int seen_any = 0;
162 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
163 if (!seen[i]) {
164 if (!ignore_unmatch) {
165 die("pathspec '%s' did not match any files",
166 match);
169 else {
170 seen_any = 1;
172 if (!recursive && seen[i] == MATCHED_RECURSIVELY)
173 die("not removing '%s' recursively without -r",
174 *match ? match : ".");
177 if (! seen_any)
178 exit(0);
182 * If not forced, the file, the index and the HEAD (if exists)
183 * must match; but the file can already been removed, since
184 * this sequence is a natural "novice" way:
186 * rm F; git rm F
188 * Further, if HEAD commit exists, "diff-index --cached" must
189 * report no changes unless forced.
191 if (!force) {
192 unsigned char sha1[20];
193 if (get_sha1("HEAD", sha1))
194 hashclr(sha1);
195 if (check_local_mod(sha1))
196 exit(1);
200 * First remove the names from the index: we won't commit
201 * the index unless all of them succeed.
203 for (i = 0; i < list.nr; i++) {
204 const char *path = list.name[i];
205 if (!quiet)
206 printf("rm '%s'\n", path);
208 if (remove_file_from_cache(path))
209 die("git-rm: unable to remove %s", path);
210 cache_tree_invalidate_path(active_cache_tree, path);
213 if (show_only)
214 return 0;
217 * Then, unless we used "--cached", remove the filenames from
218 * the workspace. If we fail to remove the first one, we
219 * abort the "git rm" (but once we've successfully removed
220 * any file at all, we'll go ahead and commit to it all:
221 * by then we've already committed ourselves and can't fail
222 * in the middle)
224 if (!index_only) {
225 int removed = 0;
226 for (i = 0; i < list.nr; i++) {
227 const char *path = list.name[i];
228 if (!remove_file(path)) {
229 removed = 1;
230 continue;
232 if (!removed)
233 die("git-rm: %s: %s", path, strerror(errno));
237 if (active_cache_changed) {
238 if (write_cache(newfd, active_cache, active_nr) ||
239 close(newfd) || commit_locked_index(&lock_file))
240 die("Unable to write new index file");
243 return 0;