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   1 /*
   2  * "git add" builtin command
   3  *
   4  * Copyright (C) 2006 Linus Torvalds
   5  */
   6 #include "cache.h"
   7 #include "builtin.h"
   8 #include "lockfile.h"
   9 #include "dir.h"
  10 #include "pathspec.h"
  11 #include "exec_cmd.h"
  12 #include "cache-tree.h"
  13 #include "run-command.h"
  14 #include "parse-options.h"
  15 #include "diff.h"
  16 #include "diffcore.h"
  17 #include "revision.h"
  18 #include "bulk-checkin.h"
  19 #include "argv-array.h"
  20
  21 static const char * const builtin_add_usage[] = {
  22         N_("git add [<options>] [--] <pathspec>..."),
  23         NULL
  24 };
  25 static int patch_interactive, add_interactive, edit_interactive;
  26 static int take_worktree_changes;
  27
  28 struct update_callback_data {
  29         int flags;
  30         int add_errors;
  31 };
  32
  33 static void chmod_pathspec(struct pathspec *pathspec, int force_mode)
  34 {
  35         int i;
  36
  37         for (i = 0; i < active_nr; i++) {
  38                 struct cache_entry *ce = active_cache[i];
  39
  40                 if (pathspec && !ce_path_match(ce, pathspec, NULL))
  41                         continue;
  42
  43                 if (chmod_cache_entry(ce, force_mode) < 0)
  44                         fprintf(stderr, "cannot chmod '%s'", ce->name);
  45         }
  46 }
  47
  48 static int fix_unmerged_status(struct diff_filepair *p,
  49                                struct update_callback_data *data)
  50 {
  51         if (p->status != DIFF_STATUS_UNMERGED)
  52                 return p->status;
  53         if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
  54                 /*
  55                  * This is not an explicit add request, and the
  56                  * path is missing from the working tree (deleted)
  57                  */
  58                 return DIFF_STATUS_DELETED;
  59         else
  60                 /*
  61                  * Either an explicit add request, or path exists
  62                  * in the working tree.  An attempt to explicitly
  63                  * add a path that does not exist in the working tree
  64                  * will be caught as an error by the caller immediately.
  65                  */
  66                 return DIFF_STATUS_MODIFIED;
  67 }
  68
  69 static void update_callback(struct diff_queue_struct *q,
  70                             struct diff_options *opt, void *cbdata)
  71 {
  72         int i;
  73         struct update_callback_data *data = cbdata;
  74
  75         for (i = 0; i < q->nr; i++) {
  76                 struct diff_filepair *p = q->queue[i];
  77                 const char *path = p->one->path;
  78                 switch (fix_unmerged_status(p, data)) {
  79                 default:
  80                         die(_("unexpected diff status %c"), p->status);
  81                 case DIFF_STATUS_MODIFIED:
  82                 case DIFF_STATUS_TYPE_CHANGED:
  83                         if (add_file_to_index(&the_index, path, data->flags)) {
  84                                 if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
  85                                         die(_("updating files failed"));
  86                                 data->add_errors++;
  87                         }
  88                         break;
  89                 case DIFF_STATUS_DELETED:
  90                         if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
  91                                 break;
  92                         if (!(data->flags & ADD_CACHE_PRETEND))
  93                                 remove_file_from_index(&the_index, path);
  94                         if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
  95                                 printf(_("remove '%s'\n"), path);
  96                         break;
  97                 }
  98         }
  99 }
 100
 101 int add_files_to_cache(const char *prefix,
 102                        const struct pathspec *pathspec, int flags)
 103 {
 104         struct update_callback_data data;
 105         struct rev_info rev;
 106
 107         memset(&data, 0, sizeof(data));
 108         data.flags = flags;
 109
 110         init_revisions(&rev, prefix);
 111         setup_revisions(0, NULL, &rev, NULL);
 112         if (pathspec)
 113                 copy_pathspec(&rev.prune_data, pathspec);
 114         rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
 115         rev.diffopt.format_callback = update_callback;
 116         rev.diffopt.format_callback_data = &data;
 117         rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
 118         run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
 119         return !!data.add_errors;
 120 }
 121
 122 static char *prune_directory(struct dir_struct *dir, struct pathspec *pathspec, int prefix)
 123 {
 124         char *seen;
 125         int i;
 126         struct dir_entry **src, **dst;
 127
 128         seen = xcalloc(pathspec->nr, 1);
 129
 130         src = dst = dir->entries;
 131         i = dir->nr;
 132         while (--i >= 0) {
 133                 struct dir_entry *entry = *src++;
 134                 if (dir_path_match(entry, pathspec, prefix, seen))
 135                         *dst++ = entry;
 136         }
 137         dir->nr = dst - dir->entries;
 138         add_pathspec_matches_against_index(pathspec, seen);
 139         return seen;
 140 }
 141
 142 static void refresh(int verbose, const struct pathspec *pathspec)
 143 {
 144         char *seen;
 145         int i;
 146
 147         seen = xcalloc(pathspec->nr, 1);
 148         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 149                       pathspec, seen, _("Unstaged changes after refreshing the index:"));
 150         for (i = 0; i < pathspec->nr; i++) {
 151                 if (!seen[i])
 152                         die(_("pathspec '%s' did not match any files"),
 153                             pathspec->items[i].match);
 154         }
 155         free(seen);
 156 }
 157
 158 int run_add_interactive(const char *revision, const char *patch_mode,
 159                         const struct pathspec *pathspec)
 160 {
 161         int status, i;
 162         struct argv_array argv = ARGV_ARRAY_INIT;
 163
 164         argv_array_push(&argv, "add--interactive");
 165         if (patch_mode)
 166                 argv_array_push(&argv, patch_mode);
 167         if (revision)
 168                 argv_array_push(&argv, revision);
 169         argv_array_push(&argv, "--");
 170         for (i = 0; i < pathspec->nr; i++)
 171                 /* pass original pathspec, to be re-parsed */
 172                 argv_array_push(&argv, pathspec->items[i].original);
 173
 174         status = run_command_v_opt(argv.argv, RUN_GIT_CMD);
 175         argv_array_clear(&argv);
 176         return status;
 177 }
 178
 179 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 180 {
 181         struct pathspec pathspec;
 182
 183         parse_pathspec(&pathspec, 0,
 184                        PATHSPEC_PREFER_FULL |
 185                        PATHSPEC_SYMLINK_LEADING_PATH |
 186                        PATHSPEC_PREFIX_ORIGIN,
 187                        prefix, argv);
 188
 189         return run_add_interactive(NULL,
 190                                    patch ? "--patch" : NULL,
 191                                    &pathspec);
 192 }
 193
 194 static int edit_patch(int argc, const char **argv, const char *prefix)
 195 {
 196         char *file = git_pathdup("ADD_EDIT.patch");
 197         const char *apply_argv[] = { "apply", "--recount", "--cached",
 198                 NULL, NULL };
 199         struct child_process child = CHILD_PROCESS_INIT;
 200         struct rev_info rev;
 201         int out;
 202         struct stat st;
 203
 204         apply_argv[3] = file;
 205
 206         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 207
 208         if (read_cache() < 0)
 209                 die(_("Could not read the index"));
 210
 211         init_revisions(&rev, prefix);
 212         rev.diffopt.context = 7;
 213
 214         argc = setup_revisions(argc, argv, &rev, NULL);
 215         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 216         rev.diffopt.use_color = 0;
 217         DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
 218         out = open(file, O_CREAT | O_WRONLY, 0666);
 219         if (out < 0)
 220                 die(_("Could not open '%s' for writing."), file);
 221         rev.diffopt.file = xfdopen(out, "w");
 222         rev.diffopt.close_file = 1;
 223         if (run_diff_files(&rev, 0))
 224                 die(_("Could not write patch"));
 225
 226         if (launch_editor(file, NULL, NULL))
 227                 die(_("editing patch failed"));
 228
 229         if (stat(file, &st))
 230                 die_errno(_("Could not stat '%s'"), file);
 231         if (!st.st_size)
 232                 die(_("Empty patch. Aborted."));
 233
 234         child.git_cmd = 1;
 235         child.argv = apply_argv;
 236         if (run_command(&child))
 237                 die(_("Could not apply '%s'"), file);
 238
 239         unlink(file);
 240         free(file);
 241         return 0;
 242 }
 243
 244 static struct lock_file lock_file;
 245
 246 static const char ignore_error[] =
 247 N_("The following paths are ignored by one of your .gitignore files:\n");
 248
 249 static int verbose, show_only, ignored_too, refresh_only;
 250 static int ignore_add_errors, intent_to_add, ignore_missing;
 251
 252 #define ADDREMOVE_DEFAULT 1
 253 static int addremove = ADDREMOVE_DEFAULT;
 254 static int addremove_explicit = -1; /* unspecified */
 255
 256 static char *chmod_arg;
 257
 258 static int ignore_removal_cb(const struct option *opt, const char *arg, int unset)
 259 {
 260         /* if we are told to ignore, we are not adding removals */
 261         *(int *)opt->value = !unset ? 0 : 1;
 262         return 0;
 263 }
 264
 265 static struct option builtin_add_options[] = {
 266         OPT__DRY_RUN(&show_only, N_("dry run")),
 267         OPT__VERBOSE(&verbose, N_("be verbose")),
 268         OPT_GROUP(""),
 269         OPT_BOOL('i', "interactive", &add_interactive, N_("interactive picking")),
 270         OPT_BOOL('p', "patch", &patch_interactive, N_("select hunks interactively")),
 271         OPT_BOOL('e', "edit", &edit_interactive, N_("edit current diff and apply")),
 272         OPT__FORCE(&ignored_too, N_("allow adding otherwise ignored files")),
 273         OPT_BOOL('u', "update", &take_worktree_changes, N_("update tracked files")),
 274         OPT_BOOL('N', "intent-to-add", &intent_to_add, N_("record only the fact that the path will be added later")),
 275         OPT_BOOL('A', "all", &addremove_explicit, N_("add changes from all tracked and untracked files")),
 276         { OPTION_CALLBACK, 0, "ignore-removal", &addremove_explicit,
 277           NULL /* takes no arguments */,
 278           N_("ignore paths removed in the working tree (same as --no-all)"),
 279           PARSE_OPT_NOARG, ignore_removal_cb },
 280         OPT_BOOL( 0 , "refresh", &refresh_only, N_("don't add, only refresh the index")),
 281         OPT_BOOL( 0 , "ignore-errors", &ignore_add_errors, N_("just skip files which cannot be added because of errors")),
 282         OPT_BOOL( 0 , "ignore-missing", &ignore_missing, N_("check if - even missing - files are ignored in dry run")),
 283         OPT_STRING( 0 , "chmod", &chmod_arg, N_("(+/-)x"), N_("override the executable bit of the listed files")),
 284         OPT_END(),
 285 };
 286
 287 static int add_config(const char *var, const char *value, void *cb)
 288 {
 289         if (!strcmp(var, "add.ignoreerrors") ||
 290             !strcmp(var, "add.ignore-errors")) {
 291                 ignore_add_errors = git_config_bool(var, value);
 292                 return 0;
 293         }
 294         return git_default_config(var, value, cb);
 295 }
 296
 297 static int add_files(struct dir_struct *dir, int flags)
 298 {
 299         int i, exit_status = 0;
 300
 301         if (dir->ignored_nr) {
 302                 fprintf(stderr, _(ignore_error));
 303                 for (i = 0; i < dir->ignored_nr; i++)
 304                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 305                 fprintf(stderr, _("Use -f if you really want to add them.\n"));
 306                 exit_status = 1;
 307         }
 308
 309         for (i = 0; i < dir->nr; i++)
 310                 if (add_file_to_index(&the_index, dir->entries[i]->name, flags)) {
 311                         if (!ignore_add_errors)
 312                                 die(_("adding files failed"));
 313                         exit_status = 1;
 314                 }
 315         return exit_status;
 316 }
 317
 318 int cmd_add(int argc, const char **argv, const char *prefix)
 319 {
 320         int exit_status = 0;
 321         struct pathspec pathspec;
 322         struct dir_struct dir;
 323         int flags;
 324         int add_new_files;
 325         int require_pathspec;
 326         char *seen = NULL;
 327
 328         git_config(add_config, NULL);
 329
 330         argc = parse_options(argc, argv, prefix, builtin_add_options,
 331                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 332         if (patch_interactive)
 333                 add_interactive = 1;
 334         if (add_interactive)
 335                 exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
 336
 337         if (edit_interactive)
 338                 return(edit_patch(argc, argv, prefix));
 339         argc--;
 340         argv++;
 341
 342         if (0 <= addremove_explicit)
 343                 addremove = addremove_explicit;
 344         else if (take_worktree_changes && ADDREMOVE_DEFAULT)
 345                 addremove = 0; /* "-u" was given but not "-A" */
 346
 347         if (addremove && take_worktree_changes)
 348                 die(_("-A and -u are mutually incompatible"));
 349
 350         if (!take_worktree_changes && addremove_explicit < 0 && argc)
 351                 /* Turn "git add pathspec..." to "git add -A pathspec..." */
 352                 addremove = 1;
 353
 354         if (!show_only && ignore_missing)
 355                 die(_("Option --ignore-missing can only be used together with --dry-run"));
 356
 357         if (chmod_arg && ((chmod_arg[0] != '-' && chmod_arg[0] != '+') ||
 358                           chmod_arg[1] != 'x' || chmod_arg[2]))
 359                 die(_("--chmod param '%s' must be either -x or +x"), chmod_arg);
 360
 361         add_new_files = !take_worktree_changes && !refresh_only;
 362         require_pathspec = !(take_worktree_changes || (0 < addremove_explicit));
 363
 364         hold_locked_index(&lock_file, 1);
 365
 366         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 367                  (show_only ? ADD_CACHE_PRETEND : 0) |
 368                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
 369                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 370                  (!(addremove || take_worktree_changes)
 371                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 372
 373         if (require_pathspec && argc == 0) {
 374                 fprintf(stderr, _("Nothing specified, nothing added.\n"));
 375                 fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
 376                 return 0;
 377         }
 378
 379         if (read_cache() < 0)
 380                 die(_("index file corrupt"));
 381
 382         /*
 383          * Check the "pathspec '%s' did not match any files" block
 384          * below before enabling new magic.
 385          */
 386         parse_pathspec(&pathspec, 0,
 387                        PATHSPEC_PREFER_FULL |
 388                        PATHSPEC_SYMLINK_LEADING_PATH |
 389                        PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
 390                        prefix, argv);
 391
 392         if (add_new_files) {
 393                 int baselen;
 394
 395                 /* Set up the default git porcelain excludes */
 396                 memset(&dir, 0, sizeof(dir));
 397                 if (!ignored_too) {
 398                         dir.flags |= DIR_COLLECT_IGNORED;
 399                         setup_standard_excludes(&dir);
 400                 }
 401
 402                 /* This picks up the paths that are not tracked */
 403                 baselen = fill_directory(&dir, &pathspec);
 404                 if (pathspec.nr)
 405                         seen = prune_directory(&dir, &pathspec, baselen);
 406         }
 407
 408         if (refresh_only) {
 409                 refresh(verbose, &pathspec);
 410                 goto finish;
 411         }
 412
 413         if (pathspec.nr) {
 414                 int i;
 415
 416                 if (!seen)
 417                         seen = find_pathspecs_matching_against_index(&pathspec);
 418
 419                 /*
 420                  * file_exists() assumes exact match
 421                  */
 422                 GUARD_PATHSPEC(&pathspec,
 423                                PATHSPEC_FROMTOP |
 424                                PATHSPEC_LITERAL |
 425                                PATHSPEC_GLOB |
 426                                PATHSPEC_ICASE |
 427                                PATHSPEC_EXCLUDE);
 428
 429                 for (i = 0; i < pathspec.nr; i++) {
 430                         const char *path = pathspec.items[i].match;
 431                         if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
 432                                 continue;
 433                         if (!seen[i] && path[0] &&
 434                             ((pathspec.items[i].magic &
 435                               (PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
 436                              !file_exists(path))) {
 437                                 if (ignore_missing) {
 438                                         int dtype = DT_UNKNOWN;
 439                                         if (is_excluded(&dir, path, &dtype))
 440                                                 dir_add_ignored(&dir, path, pathspec.items[i].len);
 441                                 } else
 442                                         die(_("pathspec '%s' did not match any files"),
 443                                             pathspec.items[i].original);
 444                         }
 445                 }
 446                 free(seen);
 447         }
 448
 449         plug_bulk_checkin();
 450
 451         exit_status |= add_files_to_cache(prefix, &pathspec, flags);
 452
 453         if (add_new_files)
 454                 exit_status |= add_files(&dir, flags);
 455
 456         if (chmod_arg && pathspec.nr)
 457                 chmod_pathspec(&pathspec, chmod_arg[0]);
 458         unplug_bulk_checkin();
 459
 460 finish:
 461         if (active_cache_changed) {
 462                 if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
 463                         die(_("Unable to write new index file"));
 464         }
 465
 466         return exit_status;
 467 }