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 lock_file lock_file;
  45
  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;
  52
  53         git_config(git_default_config);
  54
  55         newfd = hold_lock_file_for_update(&lock_file, get_index_file());
  56         if (newfd < 0)
  57                 die("unable to create new index file");
  58
  59         if (read_cache() < 0)
  60                 die("index file corrupt");
  61
  62         for (i = 1 ; i < argc ; i++) {
  63                 const char *arg = argv[i];
  64
  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);
  87
  88         pathspec = get_pathspec(prefix, argv + i);
  89         seen = NULL;
  90         for (i = 0; pathspec[i] ; i++)
  91                 /* nothing */;
  92         seen = xcalloc(i, 1);
  93
  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         }
 100
 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         }
 108
 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);
 116
 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         }
 121
 122         if (show_only)
 123                 return 0;
 124
 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         }
 145
 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         }
 151
 152         return 0;
 153 }