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