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[git.git] / builtin-rm.c
1 /*
2  * "git rm" builtin command
3  *
4  * Copyright (C) Linus Torvalds 2006
5  */
6 #include "cache.h"
7 #include "builtin.h"
8 #include "dir.h"
9 #include "cache-tree.h"
11 static const char builtin_rm_usage[] =
12 "git-rm [-n] [-v] [-f] <filepattern>...";
14 static struct {
15         int nr, alloc;
16         const char **name;
17 } list;
19 static void add_list(const char *name)
20 {
21         if (list.nr >= list.alloc) {
22                 list.alloc = alloc_nr(list.alloc);
23                 list.name = xrealloc(list.name, list.alloc * sizeof(const char *));
24         }
25         list.name[list.nr++] = name;
26 }
28 static int remove_file(const char *name)
29 {
30         int ret;
31         char *slash;
33         ret = unlink(name);
34         if (!ret && (slash = strrchr(name, '/'))) {
35                 char *n = strdup(name);
36                 do {
37                         n[slash - name] = 0;
38                         name = n;
39                 } while (!rmdir(name) && (slash = strrchr(name, '/')));
40         }
41         return ret;
42 }
44 static struct lock_file lock_file;
46 int cmd_rm(int argc, const char **argv, const char *prefix)
47 {
48         int i, newfd;
49         int verbose = 0, show_only = 0, force = 0;
50         const char **pathspec;
51         char *seen;
53         git_config(git_default_config);
55         newfd = hold_lock_file_for_update(&lock_file, get_index_file());
56         if (newfd < 0)
57                 die("unable to create new index file");
59         if (read_cache() < 0)
60                 die("index file corrupt");
62         for (i = 1 ; i < argc ; i++) {
63                 const char *arg = argv[i];
65                 if (*arg != '-')
66                         break;
67                 if (!strcmp(arg, "--")) {
68                         i++;
69                         break;
70                 }
71                 if (!strcmp(arg, "-n")) {
72                         show_only = 1;
73                         continue;
74                 }
75                 if (!strcmp(arg, "-v")) {
76                         verbose = 1;
77                         continue;
78                 }
79                 if (!strcmp(arg, "-f")) {
80                         force = 1;
81                         continue;
82                 }
83                 die(builtin_rm_usage);
84         }
85         if (argc <= i)
86                 usage(builtin_rm_usage);
88         pathspec = get_pathspec(prefix, argv + i);
89         seen = NULL;
90         for (i = 0; pathspec[i] ; i++)
91                 /* nothing */;
92         seen = xcalloc(i, 1);
94         for (i = 0; i < active_nr; i++) {
95                 struct cache_entry *ce = active_cache[i];
96                 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
97                         continue;
98                 add_list(ce->name);
99         }
101         if (pathspec) {
102                 const char *match;
103                 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
104                         if (*match && !seen[i])
105                                 die("pathspec '%s' did not match any files", match);
106                 }
107         }
109         /*
110          * First remove the names from the index: we won't commit
111          * the index unless all of them succeed
112          */
113         for (i = 0; i < list.nr; i++) {
114                 const char *path = list.name[i];
115                 printf("rm '%s'\n", path);
117                 if (remove_file_from_cache(path))
118                         die("git rm: unable to remove %s", path);
119                 cache_tree_invalidate_path(active_cache_tree, path);
120         }
122         if (show_only)
123                 return 0;
125         /*
126          * Then, if we used "-f", remove the filenames from the
127          * workspace. If we fail to remove the first one, we
128          * abort the "git rm" (but once we've successfully removed
129          * any file at all, we'll go ahead and commit to it all:
130          * by then we've already committed ourselves and can't fail
131          * in the middle)
132          */
133         if (force) {
134                 int removed = 0;
135                 for (i = 0; i < list.nr; i++) {
136                         const char *path = list.name[i];
137                         if (!remove_file(path)) {
138                                 removed = 1;
139                                 continue;
140                         }
141                         if (!removed)
142                                 die("git rm: %s: %s", path, strerror(errno));
143                 }
144         }
146         if (active_cache_changed) {
147                 if (write_cache(newfd, active_cache, active_nr) ||
148                     close(newfd) || commit_lock_file(&lock_file))
149                         die("Unable to write new index file");
150         }
152         return 0;