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
  10 static const char builtin_rm_usage[] =
  11 "git-rm [-n] [-v] [-f] <filepattern>...";
  12
  13 static struct {
  14         int nr, alloc;
  15         const char **name;
  16 } list;
  17
  18 static void add_list(const char *name)
  19 {
  20         if (list.nr >= list.alloc) {
  21                 list.alloc = alloc_nr(list.alloc);
  22                 list.name = xrealloc(list.name, list.alloc * sizeof(const char *));
  23         }
  24         list.name[list.nr++] = name;
  25 }
  26
  27 static int remove_file(const char *name)
  28 {
  29         int ret;
  30         char *slash;
  31
  32         ret = unlink(name);
  33         if (!ret && (slash = strrchr(name, '/'))) {
  34                 char *n = strdup(name);
  35                 do {
  36                         n[slash - name] = 0;
  37                         name = n;
  38                 } while (!rmdir(name) && (slash = strrchr(name, '/')));
  39         }
  40         return ret;
  41 }
  42
  43 static struct cache_file cache_file;
  44
  45 int cmd_rm(int argc, const char **argv, char **envp)
  46 {
  47         int i, newfd;
  48         int verbose = 0, show_only = 0, force = 0;
  49         const char *prefix = setup_git_directory();
  50         const char **pathspec;
  51         char *seen;
  52
  53         git_config(git_default_config);
  54
  55         newfd = hold_index_file_for_update(&cache_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         pathspec = get_pathspec(prefix, argv + i);
  86
  87         seen = NULL;
  88         if (pathspec) {
  89                 for (i = 0; pathspec[i] ; i++)
  90                         /* nothing */;
  91                 seen = xmalloc(i);
  92                 memset(seen, 0, i);
  93         }
  94
  95         for (i = 0; i < active_nr; i++) {
  96                 struct cache_entry *ce = active_cache[i];
  97                 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen))
  98                         continue;
  99                 add_list(ce->name);
 100         }
 101
 102         if (pathspec) {
 103                 const char *match;
 104                 for (i = 0; (match = pathspec[i]) != NULL ; i++) {
 105                         if (*match && !seen[i])
 106                                 die("pathspec '%s' did not match any files", match);
 107                 }
 108         }
 109
 110         /*
 111          * First remove the names from the index: we won't commit
 112          * the index unless all of them succeed
 113          */
 114         for (i = 0; i < list.nr; i++) {
 115                 const char *path = list.name[i];
 116                 printf("rm '%s'\n", path);
 117
 118                 if (remove_file_from_cache(path))
 119                         die("git rm: unable to remove %s", path);
 120         }
 121
 122         /*
 123          * Then, if we used "-f", remove the filenames from the
 124          * workspace. If we fail to remove the first one, we
 125          * abort the "git rm" (but once we've successfully removed
 126          * any file at all, we'll go ahead and commit to it all:
 127          * by then we've already committed ourself and can't fail
 128          * in the middle)
 129          */
 130         if (force) {
 131                 int removed = 0;
 132                 for (i = 0; i < list.nr; i++) {
 133                         const char *path = list.name[i];
 134                         if (!remove_file(path)) {
 135                                 removed = 1;
 136                                 continue;
 137                         }
 138                         if (!removed)
 139                                 die("git rm: %s: %s", path, strerror(errno));
 140                 }
 141         }
 142
 143         if (active_cache_changed) {
 144                 if (write_cache(newfd, active_cache, active_nr) ||
 145                     commit_index_file(&cache_file))
 146                         die("Unable to write new index file");
 147         }
 148
 149         return 0;
 150 }