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 "pathspec.h"
  10 #include "exec_cmd.h"
  11 #include "cache-tree.h"
  12 #include "run-command.h"
  13 #include "parse-options.h"
  14 #include "diff.h"
  15 #include "diffcore.h"
  16 #include "revision.h"
  17 #include "bulk-checkin.h"
  18
  19 static const char * const builtin_add_usage[] = {
  20         N_("git add [options] [--] <pathspec>..."),
  21         NULL
  22 };
  23 static int patch_interactive, add_interactive, edit_interactive;
  24 static int take_worktree_changes;
  25
  26 struct update_callback_data {
  27         int flags;
  28         int add_errors;
  29 };
  30
  31 static int fix_unmerged_status(struct diff_filepair *p,
  32                                struct update_callback_data *data)
  33 {
  34         if (p->status != DIFF_STATUS_UNMERGED)
  35                 return p->status;
  36         if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
  37                 /*
  38                  * This is not an explicit add request, and the
  39                  * path is missing from the working tree (deleted)
  40                  */
  41                 return DIFF_STATUS_DELETED;
  42         else
  43                 /*
  44                  * Either an explicit add request, or path exists
  45                  * in the working tree.  An attempt to explicitly
  46                  * add a path that does not exist in the working tree
  47                  * will be caught as an error by the caller immediately.
  48                  */
  49                 return DIFF_STATUS_MODIFIED;
  50 }
  51
  52 static void update_callback(struct diff_queue_struct *q,
  53                             struct diff_options *opt, void *cbdata)
  54 {
  55         int i;
  56         struct update_callback_data *data = cbdata;
  57
  58         for (i = 0; i < q->nr; i++) {
  59                 struct diff_filepair *p = q->queue[i];
  60                 const char *path = p->one->path;
  61                 switch (fix_unmerged_status(p, data)) {
  62                 default:
  63                         die(_("unexpected diff status %c"), p->status);
  64                 case DIFF_STATUS_MODIFIED:
  65                 case DIFF_STATUS_TYPE_CHANGED:
  66                         if (add_file_to_index(&the_index, path, data->flags)) {
  67                                 if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
  68                                         die(_("updating files failed"));
  69                                 data->add_errors++;
  70                         }
  71                         break;
  72                 case DIFF_STATUS_DELETED:
  73                         if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
  74                                 break;
  75                         if (!(data->flags & ADD_CACHE_PRETEND))
  76                                 remove_file_from_index(&the_index, path);
  77                         if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
  78                                 printf(_("remove '%s'\n"), path);
  79                         break;
  80                 }
  81         }
  82 }
  83
  84 int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
  85 {
  86         struct update_callback_data data;
  87         struct rev_info rev;
  88         init_revisions(&rev, prefix);
  89         setup_revisions(0, NULL, &rev, NULL);
  90         init_pathspec(&rev.prune_data, pathspec);
  91         rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
  92         rev.diffopt.format_callback = update_callback;
  93         data.flags = flags;
  94         data.add_errors = 0;
  95         rev.diffopt.format_callback_data = &data;
  96         rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
  97         run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
  98         return !!data.add_errors;
  99 }
 100
 101 static char *prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
 102 {
 103         char *seen;
 104         int i, specs;
 105         struct dir_entry **src, **dst;
 106
 107         for (specs = 0; pathspec[specs];  specs++)
 108                 /* nothing */;
 109         seen = xcalloc(specs, 1);
 110
 111         src = dst = dir->entries;
 112         i = dir->nr;
 113         while (--i >= 0) {
 114                 struct dir_entry *entry = *src++;
 115                 if (match_pathspec(pathspec, entry->name, entry->len,
 116                                    prefix, seen))
 117                         *dst++ = entry;
 118         }
 119         dir->nr = dst - dir->entries;
 120         add_pathspec_matches_against_index(pathspec, seen, specs);
 121         return seen;
 122 }
 123
 124 /*
 125  * Checks the index to see whether any path in pathspec refers to
 126  * something inside a submodule.  If so, dies with an error message.
 127  */
 128 static void treat_gitlinks(const char **pathspec)
 129 {
 130         int i;
 131
 132         if (!pathspec || !*pathspec)
 133                 return;
 134
 135         for (i = 0; pathspec[i]; i++)
 136                 pathspec[i] = check_path_for_gitlink(pathspec[i]);
 137 }
 138
 139 static void refresh(int verbose, const char **pathspec)
 140 {
 141         char *seen;
 142         int i, specs;
 143
 144         for (specs = 0; pathspec[specs];  specs++)
 145                 /* nothing */;
 146         seen = xcalloc(specs, 1);
 147         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 148                       pathspec, seen, _("Unstaged changes after refreshing the index:"));
 149         for (i = 0; i < specs; i++) {
 150                 if (!seen[i])
 151                         die(_("pathspec '%s' did not match any files"), pathspec[i]);
 152         }
 153         free(seen);
 154 }
 155
 156 /*
 157  * Normalizes argv relative to prefix, via get_pathspec(), and then
 158  * runs die_if_path_beyond_symlink() on each path in the normalized
 159  * list.
 160  */
 161 static const char **validate_pathspec(const char **argv, const char *prefix)
 162 {
 163         const char **pathspec = get_pathspec(prefix, argv);
 164
 165         if (pathspec) {
 166                 const char **p;
 167                 for (p = pathspec; *p; p++) {
 168                         die_if_path_beyond_symlink(*p, prefix);
 169                 }
 170         }
 171
 172         return pathspec;
 173 }
 174
 175 int run_add_interactive(const char *revision, const char *patch_mode,
 176                         const char **pathspec)
 177 {
 178         int status, ac, pc = 0;
 179         const char **args;
 180
 181         if (pathspec)
 182                 while (pathspec[pc])
 183                         pc++;
 184
 185         args = xcalloc(sizeof(const char *), (pc + 5));
 186         ac = 0;
 187         args[ac++] = "add--interactive";
 188         if (patch_mode)
 189                 args[ac++] = patch_mode;
 190         if (revision)
 191                 args[ac++] = revision;
 192         args[ac++] = "--";
 193         if (pc) {
 194                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
 195                 ac += pc;
 196         }
 197         args[ac] = NULL;
 198
 199         status = run_command_v_opt(args, RUN_GIT_CMD);
 200         free(args);
 201         return status;
 202 }
 203
 204 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 205 {
 206         const char **pathspec = NULL;
 207
 208         if (argc) {
 209                 pathspec = validate_pathspec(argv, prefix);
 210                 if (!pathspec)
 211                         return -1;
 212         }
 213
 214         return run_add_interactive(NULL,
 215                                    patch ? "--patch" : NULL,
 216                                    pathspec);
 217 }
 218
 219 static int edit_patch(int argc, const char **argv, const char *prefix)
 220 {
 221         char *file = git_pathdup("ADD_EDIT.patch");
 222         const char *apply_argv[] = { "apply", "--recount", "--cached",
 223                 NULL, NULL };
 224         struct child_process child;
 225         struct rev_info rev;
 226         int out;
 227         struct stat st;
 228
 229         apply_argv[3] = file;
 230
 231         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 232
 233         if (read_cache() < 0)
 234                 die (_("Could not read the index"));
 235
 236         init_revisions(&rev, prefix);
 237         rev.diffopt.context = 7;
 238
 239         argc = setup_revisions(argc, argv, &rev, NULL);
 240         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 241         DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
 242         out = open(file, O_CREAT | O_WRONLY, 0666);
 243         if (out < 0)
 244                 die (_("Could not open '%s' for writing."), file);
 245         rev.diffopt.file = xfdopen(out, "w");
 246         rev.diffopt.close_file = 1;
 247         if (run_diff_files(&rev, 0))
 248                 die (_("Could not write patch"));
 249
 250         launch_editor(file, NULL, NULL);
 251
 252         if (stat(file, &st))
 253                 die_errno(_("Could not stat '%s'"), file);
 254         if (!st.st_size)
 255                 die(_("Empty patch. Aborted."));
 256
 257         memset(&child, 0, sizeof(child));
 258         child.git_cmd = 1;
 259         child.argv = apply_argv;
 260         if (run_command(&child))
 261                 die (_("Could not apply '%s'"), file);
 262
 263         unlink(file);
 264         free(file);
 265         return 0;
 266 }
 267
 268 static struct lock_file lock_file;
 269
 270 static const char ignore_error[] =
 271 N_("The following paths are ignored by one of your .gitignore files:\n");
 272
 273 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 274 static int ignore_add_errors, addremove, intent_to_add, ignore_missing = 0;
 275
 276 static struct option builtin_add_options[] = {
 277         OPT__DRY_RUN(&show_only, N_("dry run")),
 278         OPT__VERBOSE(&verbose, N_("be verbose")),
 279         OPT_GROUP(""),
 280         OPT_BOOLEAN('i', "interactive", &add_interactive, N_("interactive picking")),
 281         OPT_BOOLEAN('p', "patch", &patch_interactive, N_("select hunks interactively")),
 282         OPT_BOOLEAN('e', "edit", &edit_interactive, N_("edit current diff and apply")),
 283         OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files")),
 284         OPT_BOOLEAN('u', "update", &take_worktree_changes, N_("update tracked files")),
 285         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
 286         OPT_BOOLEAN('A', "all", &addremove, N_("add changes from all tracked and untracked files")),
 287         OPT_BOOLEAN( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
 288         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
 289         OPT_BOOLEAN( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
 290         OPT_END(),
 291 };
 292
 293 static int add_config(const char *var, const char *value, void *cb)
 294 {
 295         if (!strcmp(var, "add.ignoreerrors") ||
 296             !strcmp(var, "add.ignore-errors")) {
 297                 ignore_add_errors = git_config_bool(var, value);
 298                 return 0;
 299         }
 300         return git_default_config(var, value, cb);
 301 }
 302
 303 static int add_files(struct dir_struct *dir, int flags)
 304 {
 305         int i, exit_status = 0;
 306
 307         if (dir->ignored_nr) {
 308                 fprintf(stderr, _(ignore_error));
 309                 for (i = 0; i < dir->ignored_nr; i++)
 310                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 311                 fprintf(stderr, _("Use -f if you really want to add them.\n"));
 312                 die(_("no files added"));
 313         }
 314
 315         for (i = 0; i < dir->nr; i++)
 316                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
 317                         if (!ignore_add_errors)
 318                                 die(_("adding files failed"));
 319                         exit_status = 1;
 320                 }
 321         return exit_status;
 322 }
 323
 324 static void warn_pathless_add(const char *option_name, const char *short_name) {
 325         /*
 326          * To be consistent with "git add -p" and most Git
 327          * commands, we should default to being tree-wide, but
 328          * this is not the original behavior and can't be
 329          * changed until users trained themselves not to type
 330          * "git add -u" or "git add -A". For now, we warn and
 331          * keep the old behavior. Later, the behavior can be changed
 332          * to tree-wide, keeping the warning for a while, and
 333          * eventually we can drop the warning.
 334          */
 335         warning(_("The behavior of 'git add %s (or %s)' with no path argument from a\n"
 336                   "subdirectory of the tree will change in Git 2.0 and should not be used anymore.\n"
 337                   "To add content for the whole tree, run:\n"
 338                   "\n"
 339                   "  git add %s :/\n"
 340                   "  (or git add %s :/)\n"
 341                   "\n"
 342                   "To restrict the command to the current directory, run:\n"
 343                   "\n"
 344                   "  git add %s .\n"
 345                   "  (or git add %s .)\n"
 346                   "\n"
 347                   "With the current Git version, the command is restricted to the current directory."),
 348                 option_name, short_name,
 349                 option_name, short_name,
 350                 option_name, short_name);
 351 }
 352
 353 int cmd_add(int argc, const char **argv, const char *prefix)
 354 {
 355         int exit_status = 0;
 356         int newfd;
 357         const char **pathspec;
 358         struct dir_struct dir;
 359         int flags;
 360         int add_new_files;
 361         int require_pathspec;
 362         char *seen = NULL;
 363         const char *option_with_implicit_dot = NULL;
 364         const char *short_option_with_implicit_dot = NULL;
 365
 366         git_config(add_config, NULL);
 367
 368         argc = parse_options(argc, argv, prefix, builtin_add_options,
 369                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 370         if (patch_interactive)
 371                 add_interactive = 1;
 372         if (add_interactive)
 373                 exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
 374
 375         if (edit_interactive)
 376                 return(edit_patch(argc, argv, prefix));
 377         argc--;
 378         argv++;
 379
 380         if (addremove && take_worktree_changes)
 381                 die(_("-A and -u are mutually incompatible"));
 382         if (!show_only && ignore_missing)
 383                 die(_("Option --ignore-missing can only be used together with --dry-run"));
 384         if (addremove) {
 385                 option_with_implicit_dot = "--all";
 386                 short_option_with_implicit_dot = "-A";
 387         }
 388         if (take_worktree_changes) {
 389                 option_with_implicit_dot = "--update";
 390                 short_option_with_implicit_dot = "-u";
 391         }
 392         if (option_with_implicit_dot && !argc) {
 393                 static const char *here[2] = { ".", NULL };
 394                 if (prefix)
 395                         warn_pathless_add(option_with_implicit_dot,
 396                                           short_option_with_implicit_dot);
 397                 argc = 1;
 398                 argv = here;
 399         }
 400
 401         add_new_files = !take_worktree_changes && !refresh_only;
 402         require_pathspec = !take_worktree_changes;
 403
 404         newfd = hold_locked_index(&lock_file, 1);
 405
 406         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 407                  (show_only ? ADD_CACHE_PRETEND : 0) |
 408                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
 409                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 410                  (!(addremove || take_worktree_changes)
 411                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 412
 413         if (require_pathspec && argc == 0) {
 414                 fprintf(stderr, _("Nothing specified, nothing added.\n"));
 415                 fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
 416                 return 0;
 417         }
 418         pathspec = validate_pathspec(argv, prefix);
 419
 420         if (read_cache() < 0)
 421                 die(_("index file corrupt"));
 422         treat_gitlinks(pathspec);
 423
 424         if (add_new_files) {
 425                 int baselen;
 426
 427                 /* Set up the default git porcelain excludes */
 428                 memset(&dir, 0, sizeof(dir));
 429                 if (!ignored_too) {
 430                         dir.flags |= DIR_COLLECT_IGNORED;
 431                         setup_standard_excludes(&dir);
 432                 }
 433
 434                 /* This picks up the paths that are not tracked */
 435                 baselen = fill_directory(&dir, pathspec);
 436                 if (pathspec)
 437                         seen = prune_directory(&dir, pathspec, baselen);
 438         }
 439
 440         if (refresh_only) {
 441                 refresh(verbose, pathspec);
 442                 goto finish;
 443         }
 444
 445         if (pathspec) {
 446                 int i;
 447                 struct path_exclude_check check;
 448
 449                 path_exclude_check_init(&check, &dir);
 450                 if (!seen)
 451                         seen = find_pathspecs_matching_against_index(pathspec);
 452                 for (i = 0; pathspec[i]; i++) {
 453                         if (!seen[i] && pathspec[i][0]
 454                             && !file_exists(pathspec[i])) {
 455                                 if (ignore_missing) {
 456                                         int dtype = DT_UNKNOWN;
 457                                         if (is_path_excluded(&check, pathspec[i], -1, &dtype))
 458                                                 dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
 459                                 } else
 460                                         die(_("pathspec '%s' did not match any files"),
 461                                             pathspec[i]);
 462                         }
 463                 }
 464                 free(seen);
 465                 path_exclude_check_clear(&check);
 466         }
 467
 468         plug_bulk_checkin();
 469
 470         exit_status |= add_files_to_cache(prefix, pathspec, flags);
 471
 472         if (add_new_files)
 473                 exit_status |= add_files(&dir, flags);
 474
 475         unplug_bulk_checkin();
 476
 477  finish:
 478         if (active_cache_changed) {
 479                 if (write_cache(newfd, active_cache, active_nr) ||
 480                     commit_locked_index(&lock_file))
 481                         die(_("Unable to write new index file"));
 482         }
 483
 484         return exit_status;
 485 }