builtin-add.c

   1 /*
   2  * "git add" builtin command
   3  *
   4  * Copyright (C) 2006 Linus Torvalds
   5  */
   6 #include "cache.h"
   7 #include "builtin.h"
   8 #include "dir.h"
   9 #include "exec_cmd.h"
  10 #include "cache-tree.h"
  11 #include "run-command.h"
  12 #include "parse-options.h"
  13
  14 static const char * const builtin_add_usage[] = {
  15         "git add [options] [--] <filepattern>...",
  16         NULL
  17 };
  18 static int patch_interactive = 0, add_interactive = 0;
  19 static int take_worktree_changes;
  20
  21 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
  22 {
  23         int num_unmatched = 0, i;
  24
  25         /*
  26          * Since we are walking the index as if we are warlking the directory,
  27          * we have to mark the matched pathspec as seen; otherwise we will
  28          * mistakenly think that the user gave a pathspec that did not match
  29          * anything.
  30          */
  31         for (i = 0; i < specs; i++)
  32                 if (!seen[i])
  33                         num_unmatched++;
  34         if (!num_unmatched)
  35                 return;
  36         for (i = 0; i < active_nr; i++) {
  37                 struct cache_entry *ce = active_cache[i];
  38                 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
  39         }
  40 }
  41
  42 static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
  43 {
  44         char *seen;
  45         int i, specs;
  46         struct dir_entry **src, **dst;
  47
  48         for (specs = 0; pathspec[specs];  specs++)
  49                 /* nothing */;
  50         seen = xcalloc(specs, 1);
  51
  52         src = dst = dir->entries;
  53         i = dir->nr;
  54         while (--i >= 0) {
  55                 struct dir_entry *entry = *src++;
  56                 if (match_pathspec(pathspec, entry->name, entry->len,
  57                                    prefix, seen))
  58                         *dst++ = entry;
  59         }
  60         dir->nr = dst - dir->entries;
  61         fill_pathspec_matches(pathspec, seen, specs);
  62
  63         for (i = 0; i < specs; i++) {
  64                 if (!seen[i] && !file_exists(pathspec[i]))
  65                         die("pathspec '%s' did not match any files",
  66                                         pathspec[i]);
  67         }
  68         free(seen);
  69 }
  70
  71 static void fill_directory(struct dir_struct *dir, const char **pathspec,
  72                 int ignored_too)
  73 {
  74         const char *path, *base;
  75         int baselen;
  76
  77         /* Set up the default git porcelain excludes */
  78         memset(dir, 0, sizeof(*dir));
  79         if (!ignored_too) {
  80                 dir->collect_ignored = 1;
  81                 setup_standard_excludes(dir);
  82         }
  83
  84         /*
  85          * Calculate common prefix for the pathspec, and
  86          * use that to optimize the directory walk
  87          */
  88         baselen = common_prefix(pathspec);
  89         path = ".";
  90         base = "";
  91         if (baselen)
  92                 path = base = xmemdupz(*pathspec, baselen);
  93
  94         /* Read the directory and prune it */
  95         read_directory(dir, path, base, baselen, pathspec);
  96         if (pathspec)
  97                 prune_directory(dir, pathspec, baselen);
  98 }
  99
 100 static void refresh(int verbose, const char **pathspec)
 101 {
 102         char *seen;
 103         int i, specs;
 104
 105         for (specs = 0; pathspec[specs];  specs++)
 106                 /* nothing */;
 107         seen = xcalloc(specs, 1);
 108         refresh_index(&the_index, verbose ? REFRESH_SAY_CHANGED : REFRESH_QUIET,
 109                       pathspec, seen);
 110         for (i = 0; i < specs; i++) {
 111                 if (!seen[i])
 112                         die("pathspec '%s' did not match any files", pathspec[i]);
 113         }
 114         free(seen);
 115 }
 116
 117 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 118 {
 119         const char **pathspec = get_pathspec(prefix, argv);
 120
 121         if (pathspec) {
 122                 const char **p;
 123                 for (p = pathspec; *p; p++) {
 124                         if (has_symlink_leading_path(strlen(*p), *p)) {
 125                                 int len = prefix ? strlen(prefix) : 0;
 126                                 die("'%s' is beyond a symbolic link", *p + len);
 127                         }
 128                 }
 129         }
 130
 131         return pathspec;
 132 }
 133
 134 int interactive_add(int argc, const char **argv, const char *prefix)
 135 {
 136         int status, ac;
 137         const char **args;
 138         const char **pathspec = NULL;
 139
 140         if (argc) {
 141                 pathspec = validate_pathspec(argc, argv, prefix);
 142                 if (!pathspec)
 143                         return -1;
 144         }
 145
 146         args = xcalloc(sizeof(const char *), (argc + 4));
 147         ac = 0;
 148         args[ac++] = "add--interactive";
 149         if (patch_interactive)
 150                 args[ac++] = "--patch";
 151         args[ac++] = "--";
 152         if (argc) {
 153                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * argc);
 154                 ac += argc;
 155         }
 156         args[ac] = NULL;
 157
 158         status = run_command_v_opt(args, RUN_GIT_CMD);
 159         free(args);
 160         return status;
 161 }
 162
 163 static struct lock_file lock_file;
 164
 165 static const char ignore_error[] =
 166 "The following paths are ignored by one of your .gitignore files:\n";
 167
 168 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 169 static int ignore_add_errors, addremove;
 170
 171 static struct option builtin_add_options[] = {
 172         OPT__DRY_RUN(&show_only),
 173         OPT__VERBOSE(&verbose),
 174         OPT_GROUP(""),
 175         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 176         OPT_BOOLEAN('p', "patch", &patch_interactive, "interactive patching"),
 177         OPT_BOOLEAN('f', "force", &ignored_too, "allow adding otherwise ignored files"),
 178         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 179         OPT_BOOLEAN('A', "all", &addremove, "add all, noticing removal of tracked files"),
 180         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 181         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 182         OPT_END(),
 183 };
 184
 185 static int add_config(const char *var, const char *value, void *cb)
 186 {
 187         if (!strcasecmp(var, "add.ignore-errors")) {
 188                 ignore_add_errors = git_config_bool(var, value);
 189                 return 0;
 190         }
 191         return git_default_config(var, value, cb);
 192 }
 193
 194 static int add_files(struct dir_struct *dir, int flags)
 195 {
 196         int i, exit_status = 0;
 197
 198         if (dir->ignored_nr) {
 199                 fprintf(stderr, ignore_error);
 200                 for (i = 0; i < dir->ignored_nr; i++)
 201                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 202                 fprintf(stderr, "Use -f if you really want to add them.\n");
 203                 die("no files added");
 204         }
 205
 206         for (i = 0; i < dir->nr; i++)
 207                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
 208                         if (!ignore_add_errors)
 209                                 die("adding files failed");
 210                         exit_status = 1;
 211                 }
 212         return exit_status;
 213 }
 214
 215 int cmd_add(int argc, const char **argv, const char *prefix)
 216 {
 217         int exit_status = 0;
 218         int newfd;
 219         const char **pathspec;
 220         struct dir_struct dir;
 221         int flags;
 222         int add_new_files;
 223         int require_pathspec;
 224
 225         argc = parse_options(argc, argv, builtin_add_options,
 226                           builtin_add_usage, 0);
 227         if (patch_interactive)
 228                 add_interactive = 1;
 229         if (add_interactive)
 230                 exit(interactive_add(argc, argv, prefix));
 231
 232         git_config(add_config, NULL);
 233
 234         if (addremove && take_worktree_changes)
 235                 die("-A and -u are mutually incompatible");
 236         if ((addremove || take_worktree_changes) && !argc) {
 237                 static const char *here[2] = { ".", NULL };
 238                 argc = 1;
 239                 argv = here;
 240         }
 241
 242         add_new_files = !take_worktree_changes && !refresh_only;
 243         require_pathspec = !take_worktree_changes;
 244
 245         newfd = hold_locked_index(&lock_file, 1);
 246
 247         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 248                  (show_only ? ADD_CACHE_PRETEND : 0) |
 249                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 250                  (!(addremove || take_worktree_changes)
 251                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 252
 253         if (require_pathspec && argc == 0) {
 254                 fprintf(stderr, "Nothing specified, nothing added.\n");
 255                 fprintf(stderr, "Maybe you wanted to say 'git add .'?\n");
 256                 return 0;
 257         }
 258         pathspec = validate_pathspec(argc, argv, prefix);
 259
 260         if (read_cache() < 0)
 261                 die("index file corrupt");
 262
 263         if (add_new_files)
 264                 /* This picks up the paths that are not tracked */
 265                 fill_directory(&dir, pathspec, ignored_too);
 266
 267         if (refresh_only) {
 268                 refresh(verbose, pathspec);
 269                 goto finish;
 270         }
 271
 272         exit_status |= add_files_to_cache(prefix, pathspec, flags);
 273
 274         if (add_new_files)
 275                 exit_status |= add_files(&dir, flags);
 276
 277  finish:
 278         if (active_cache_changed) {
 279                 if (write_cache(newfd, active_cache, active_nr) ||
 280                     commit_locked_index(&lock_file))
 281                         die("Unable to write new index file");
 282         }
 283
 284         return exit_status;
 285 }