git-svnimport: Improved detection of merges.
[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"
10
11 static const char builtin_rm_usage[] =
12 "git-rm [-n] [-v] [-f] <filepattern>...";
13
14 static struct {
15         int nr, alloc;
16         const char **name;
17 } list;
18
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 }
27
28 static int remove_file(const char *name)
29 {
30         int ret;
31         char *slash;
32
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 }
43
44 static struct cache_file cache_file;
45
46 int cmd_rm(int argc, const char **argv, char **envp)
47 {
48         int i, newfd;
49         int verbose = 0, show_only = 0, force = 0;
50         const char *prefix = setup_git_directory();
51         const char **pathspec;
52         char *seen;
53
54         git_config(git_default_config);
55
56         newfd = hold_index_file_for_update(&cache_file, get_index_file());
57         if (newfd < 0)
58                 die("unable to create new index file");
59
60         if (read_cache() < 0)
61                 die("index file corrupt");
62
63         for (i = 1 ; i < argc ; i++) {
64                 const char *arg = argv[i];
65
66                 if (*arg != '-')
67                         break;
68                 if (!strcmp(arg, "--")) {
69                         i++;
70                         break;
71                 }
72                 if (!strcmp(arg, "-n")) {
73                         show_only = 1;
74                         continue;
75                 }
76                 if (!strcmp(arg, "-v")) {
77                         verbose = 1;
78                         continue;
79                 }
80                 if (!strcmp(arg, "-f")) {
81                         force = 1;
82                         continue;
83                 }
84                 die(builtin_rm_usage);
85         }
86         pathspec = get_pathspec(prefix, argv + i);
87
88         seen = NULL;
89         if (pathspec) {
90                 for (i = 0; pathspec[i] ; i++)
91                         /* nothing */;
92                 seen = xmalloc(i);
93                 memset(seen, 0, i);
94         }
95
96         for (i = 0; i < active_nr; i++) {
97                 struct cache_entry *ce = active_cache[i];
98                 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
99                         continue;
100                 add_list(ce->name);
101         }
102
103         if (pathspec) {
104                 const char *match;
105                 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
106                         if (*match && !seen[i])
107                                 die("pathspec '%s' did not match any files", match);
108                 }
109         }
110
111         /*
112          * First remove the names from the index: we won't commit
113          * the index unless all of them succeed
114          */
115         for (i = 0; i < list.nr; i++) {
116                 const char *path = list.name[i];
117                 printf("rm '%s'\n", path);
118
119                 if (remove_file_from_cache(path))
120                         die("git rm: unable to remove %s", path);
121                 cache_tree_invalidate_path(active_cache_tree, path);
122         }
123
124         /*
125          * Then, if we used "-f", remove the filenames from the
126          * workspace. If we fail to remove the first one, we
127          * abort the "git rm" (but once we've successfully removed
128          * any file at all, we'll go ahead and commit to it all:
129          * by then we've already committed ourself and can't fail
130          * in the middle)
131          */
132         if (force) {
133                 int removed = 0;
134                 for (i = 0; i < list.nr; i++) {
135                         const char *path = list.name[i];
136                         if (!remove_file(path)) {
137                                 removed = 1;
138                                 continue;
139                         }
140                         if (!removed)
141                                 die("git rm: %s: %s", path, strerror(errno));
142                 }
143         }
144
145         if (active_cache_changed) {
146                 if (write_cache(newfd, active_cache, active_nr) ||
147                     commit_index_file(&cache_file))
148                         die("Unable to write new index file");
149         }
150
151         return 0;
152 }