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 #include "diff.h"
  14 #include "diffcore.h"
  15 #include "revision.h"
  16 #include "bulk-checkin.h"
  17
  18 static const char * const builtin_add_usage[] = {
  19         "git add [options] [--] <filepattern>...",
  20         NULL
  21 };
  22 static int patch_interactive, add_interactive, edit_interactive;
  23 static int take_worktree_changes;
  24
  25 struct update_callback_data {
  26         int flags;
  27         int add_errors;
  28 };
  29
  30 static int fix_unmerged_status(struct diff_filepair *p,
  31                                struct update_callback_data *data)
  32 {
  33         if (p->status != DIFF_STATUS_UNMERGED)
  34                 return p->status;
  35         if (!(data->flags & ADD_CACHE_IGNORE_REMOVAL) && !p->two->mode)
  36                 /*
  37                  * This is not an explicit add request, and the
  38                  * path is missing from the working tree (deleted)
  39                  */
  40                 return DIFF_STATUS_DELETED;
  41         else
  42                 /*
  43                  * Either an explicit add request, or path exists
  44                  * in the working tree.  An attempt to explicitly
  45                  * add a path that does not exist in the working tree
  46                  * will be caught as an error by the caller immediately.
  47                  */
  48                 return DIFF_STATUS_MODIFIED;
  49 }
  50
  51 static void update_callback(struct diff_queue_struct *q,
  52                             struct diff_options *opt, void *cbdata)
  53 {
  54         int i;
  55         struct update_callback_data *data = cbdata;
  56
  57         for (i = 0; i < q->nr; i++) {
  58                 struct diff_filepair *p = q->queue[i];
  59                 const char *path = p->one->path;
  60                 switch (fix_unmerged_status(p, data)) {
  61                 default:
  62                         die(_("unexpected diff status %c"), p->status);
  63                 case DIFF_STATUS_MODIFIED:
  64                 case DIFF_STATUS_TYPE_CHANGED:
  65                         if (add_file_to_index(&the_index, path, data->flags)) {
  66                                 if (!(data->flags & ADD_CACHE_IGNORE_ERRORS))
  67                                         die(_("updating files failed"));
  68                                 data->add_errors++;
  69                         }
  70                         break;
  71                 case DIFF_STATUS_DELETED:
  72                         if (data->flags & ADD_CACHE_IGNORE_REMOVAL)
  73                                 break;
  74                         if (!(data->flags & ADD_CACHE_PRETEND))
  75                                 remove_file_from_index(&the_index, path);
  76                         if (data->flags & (ADD_CACHE_PRETEND|ADD_CACHE_VERBOSE))
  77                                 printf(_("remove '%s'\n"), path);
  78                         break;
  79                 }
  80         }
  81 }
  82
  83 int add_files_to_cache(const char *prefix, const char **pathspec, int flags)
  84 {
  85         struct update_callback_data data;
  86         struct rev_info rev;
  87         init_revisions(&rev, prefix);
  88         setup_revisions(0, NULL, &rev, NULL);
  89         init_pathspec(&rev.prune_data, pathspec);
  90         rev.diffopt.output_format = DIFF_FORMAT_CALLBACK;
  91         rev.diffopt.format_callback = update_callback;
  92         data.flags = flags;
  93         data.add_errors = 0;
  94         rev.diffopt.format_callback_data = &data;
  95         rev.max_count = 0; /* do not compare unmerged paths with stage #2 */
  96         run_diff_files(&rev, DIFF_RACY_IS_MODIFIED);
  97         return !!data.add_errors;
  98 }
  99
 100 static void fill_pathspec_matches(const char **pathspec, char *seen, int specs)
 101 {
 102         int num_unmatched = 0, i;
 103
 104         /*
 105          * Since we are walking the index as if we were walking the directory,
 106          * we have to mark the matched pathspec as seen; otherwise we will
 107          * mistakenly think that the user gave a pathspec that did not match
 108          * anything.
 109          */
 110         for (i = 0; i < specs; i++)
 111                 if (!seen[i])
 112                         num_unmatched++;
 113         if (!num_unmatched)
 114                 return;
 115         for (i = 0; i < active_nr; i++) {
 116                 struct cache_entry *ce = active_cache[i];
 117                 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
 118         }
 119 }
 120
 121 static char *find_used_pathspec(const char **pathspec)
 122 {
 123         char *seen;
 124         int i;
 125
 126         for (i = 0; pathspec[i];  i++)
 127                 ; /* just counting */
 128         seen = xcalloc(i, 1);
 129         fill_pathspec_matches(pathspec, seen, i);
 130         return seen;
 131 }
 132
 133 static char *prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
 134 {
 135         char *seen;
 136         int i, specs;
 137         struct dir_entry **src, **dst;
 138
 139         for (specs = 0; pathspec[specs];  specs++)
 140                 /* nothing */;
 141         seen = xcalloc(specs, 1);
 142
 143         src = dst = dir->entries;
 144         i = dir->nr;
 145         while (--i >= 0) {
 146                 struct dir_entry *entry = *src++;
 147                 if (match_pathspec(pathspec, entry->name, entry->len,
 148                                    prefix, seen))
 149                         *dst++ = entry;
 150         }
 151         dir->nr = dst - dir->entries;
 152         fill_pathspec_matches(pathspec, seen, specs);
 153         return seen;
 154 }
 155
 156 static void treat_gitlinks(const char **pathspec)
 157 {
 158         int i;
 159
 160         if (!pathspec || !*pathspec)
 161                 return;
 162
 163         for (i = 0; i < active_nr; i++) {
 164                 struct cache_entry *ce = active_cache[i];
 165                 if (S_ISGITLINK(ce->ce_mode)) {
 166                         int len = ce_namelen(ce), j;
 167                         for (j = 0; pathspec[j]; j++) {
 168                                 int len2 = strlen(pathspec[j]);
 169                                 if (len2 <= len || pathspec[j][len] != '/' ||
 170                                     memcmp(ce->name, pathspec[j], len))
 171                                         continue;
 172                                 if (len2 == len + 1)
 173                                         /* strip trailing slash */
 174                                         pathspec[j] = xstrndup(ce->name, len);
 175                                 else
 176                                         die (_("Path '%s' is in submodule '%.*s'"),
 177                                                 pathspec[j], len, ce->name);
 178                         }
 179                 }
 180         }
 181 }
 182
 183 static void refresh(int verbose, const char **pathspec)
 184 {
 185         char *seen;
 186         int i, specs;
 187
 188         for (specs = 0; pathspec[specs];  specs++)
 189                 /* nothing */;
 190         seen = xcalloc(specs, 1);
 191         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 192                       pathspec, seen, _("Unstaged changes after refreshing the index:"));
 193         for (i = 0; i < specs; i++) {
 194                 if (!seen[i])
 195                         die(_("pathspec '%s' did not match any files"), pathspec[i]);
 196         }
 197         free(seen);
 198 }
 199
 200 static const char **validate_pathspec(int argc, const char **argv, const char *prefix)
 201 {
 202         const char **pathspec = get_pathspec(prefix, argv);
 203
 204         if (pathspec) {
 205                 const char **p;
 206                 for (p = pathspec; *p; p++) {
 207                         if (has_symlink_leading_path(*p, strlen(*p))) {
 208                                 int len = prefix ? strlen(prefix) : 0;
 209                                 die(_("'%s' is beyond a symbolic link"), *p + len);
 210                         }
 211                 }
 212         }
 213
 214         return pathspec;
 215 }
 216
 217 int run_add_interactive(const char *revision, const char *patch_mode,
 218                         const char **pathspec)
 219 {
 220         int status, ac, pc = 0;
 221         const char **args;
 222
 223         if (pathspec)
 224                 while (pathspec[pc])
 225                         pc++;
 226
 227         args = xcalloc(sizeof(const char *), (pc + 5));
 228         ac = 0;
 229         args[ac++] = "add--interactive";
 230         if (patch_mode)
 231                 args[ac++] = patch_mode;
 232         if (revision)
 233                 args[ac++] = revision;
 234         args[ac++] = "--";
 235         if (pc) {
 236                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
 237                 ac += pc;
 238         }
 239         args[ac] = NULL;
 240
 241         status = run_command_v_opt(args, RUN_GIT_CMD);
 242         free(args);
 243         return status;
 244 }
 245
 246 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 247 {
 248         const char **pathspec = NULL;
 249
 250         if (argc) {
 251                 pathspec = validate_pathspec(argc, argv, prefix);
 252                 if (!pathspec)
 253                         return -1;
 254         }
 255
 256         return run_add_interactive(NULL,
 257                                    patch ? "--patch" : NULL,
 258                                    pathspec);
 259 }
 260
 261 static int edit_patch(int argc, const char **argv, const char *prefix)
 262 {
 263         char *file = xstrdup(git_path("ADD_EDIT.patch"));
 264         const char *apply_argv[] = { "apply", "--recount", "--cached",
 265                 NULL, NULL };
 266         struct child_process child;
 267         struct rev_info rev;
 268         int out;
 269         struct stat st;
 270
 271         apply_argv[3] = file;
 272
 273         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 274
 275         if (read_cache() < 0)
 276                 die (_("Could not read the index"));
 277
 278         init_revisions(&rev, prefix);
 279         rev.diffopt.context = 7;
 280
 281         argc = setup_revisions(argc, argv, &rev, NULL);
 282         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 283         DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
 284         out = open(file, O_CREAT | O_WRONLY, 0644);
 285         if (out < 0)
 286                 die (_("Could not open '%s' for writing."), file);
 287         rev.diffopt.file = xfdopen(out, "w");
 288         rev.diffopt.close_file = 1;
 289         if (run_diff_files(&rev, 0))
 290                 die (_("Could not write patch"));
 291
 292         launch_editor(file, NULL, NULL);
 293
 294         if (stat(file, &st))
 295                 die_errno(_("Could not stat '%s'"), file);
 296         if (!st.st_size)
 297                 die(_("Empty patch. Aborted."));
 298
 299         memset(&child, 0, sizeof(child));
 300         child.git_cmd = 1;
 301         child.argv = apply_argv;
 302         if (run_command(&child))
 303                 die (_("Could not apply '%s'"), file);
 304
 305         unlink(file);
 306         return 0;
 307 }
 308
 309 static struct lock_file lock_file;
 310
 311 static const char ignore_error[] =
 312 N_("The following paths are ignored by one of your .gitignore files:\n");
 313
 314 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 315 static int ignore_add_errors, addremove, intent_to_add, ignore_missing = 0;
 316
 317 static struct option builtin_add_options[] = {
 318         OPT__DRY_RUN(&show_only, "dry run"),
 319         OPT__VERBOSE(&verbose, "be verbose"),
 320         OPT_GROUP(""),
 321         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 322         OPT_BOOLEAN('p', "patch", &patch_interactive, "select hunks interactively"),
 323         OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
 324         OPT__FORCE(&ignored_too, "allow adding otherwise ignored files"),
 325         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 326         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
 327         OPT_BOOLEAN('A', "all", &addremove, "add changes from all tracked and untracked files"),
 328         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 329         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 330         OPT_BOOLEAN( 0 , "ignore-missing", &ignore_missing, "check if - even missing - files are ignored in dry run"),
 331         OPT_END(),
 332 };
 333
 334 static int add_config(const char *var, const char *value, void *cb)
 335 {
 336         if (!strcmp(var, "add.ignoreerrors") ||
 337             !strcmp(var, "add.ignore-errors")) {
 338                 ignore_add_errors = git_config_bool(var, value);
 339                 return 0;
 340         }
 341         return git_default_config(var, value, cb);
 342 }
 343
 344 static int add_files(struct dir_struct *dir, int flags)
 345 {
 346         int i, exit_status = 0;
 347
 348         if (dir->ignored_nr) {
 349                 fprintf(stderr, _(ignore_error));
 350                 for (i = 0; i < dir->ignored_nr; i++)
 351                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 352                 fprintf(stderr, _("Use -f if you really want to add them.\n"));
 353                 die(_("no files added"));
 354         }
 355
 356         for (i = 0; i < dir->nr; i++)
 357                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
 358                         if (!ignore_add_errors)
 359                                 die(_("adding files failed"));
 360                         exit_status = 1;
 361                 }
 362         return exit_status;
 363 }
 364
 365 int cmd_add(int argc, const char **argv, const char *prefix)
 366 {
 367         int exit_status = 0;
 368         int newfd;
 369         const char **pathspec;
 370         struct dir_struct dir;
 371         int flags;
 372         int add_new_files;
 373         int require_pathspec;
 374         char *seen = NULL;
 375
 376         git_config(add_config, NULL);
 377
 378         argc = parse_options(argc, argv, prefix, builtin_add_options,
 379                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 380         if (patch_interactive)
 381                 add_interactive = 1;
 382         if (add_interactive)
 383                 exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
 384
 385         if (edit_interactive)
 386                 return(edit_patch(argc, argv, prefix));
 387         argc--;
 388         argv++;
 389
 390         if (addremove && take_worktree_changes)
 391                 die(_("-A and -u are mutually incompatible"));
 392         if (!show_only && ignore_missing)
 393                 die(_("Option --ignore-missing can only be used together with --dry-run"));
 394         if ((addremove || take_worktree_changes) && !argc) {
 395                 static const char *here[2] = { ".", NULL };
 396                 argc = 1;
 397                 argv = here;
 398         }
 399
 400         add_new_files = !take_worktree_changes && !refresh_only;
 401         require_pathspec = !take_worktree_changes;
 402
 403         newfd = hold_locked_index(&lock_file, 1);
 404
 405         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 406                  (show_only ? ADD_CACHE_PRETEND : 0) |
 407                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
 408                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 409                  (!(addremove || take_worktree_changes)
 410                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 411
 412         if (require_pathspec && argc == 0) {
 413                 fprintf(stderr, _("Nothing specified, nothing added.\n"));
 414                 fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
 415                 return 0;
 416         }
 417         pathspec = validate_pathspec(argc, argv, prefix);
 418
 419         if (read_cache() < 0)
 420                 die(_("index file corrupt"));
 421         treat_gitlinks(pathspec);
 422
 423         if (add_new_files) {
 424                 int baselen;
 425
 426                 /* Set up the default git porcelain excludes */
 427                 memset(&dir, 0, sizeof(dir));
 428                 if (!ignored_too) {
 429                         dir.flags |= DIR_COLLECT_IGNORED;
 430                         setup_standard_excludes(&dir);
 431                 }
 432
 433                 /* This picks up the paths that are not tracked */
 434                 baselen = fill_directory(&dir, pathspec);
 435                 if (pathspec)
 436                         seen = prune_directory(&dir, pathspec, baselen);
 437         }
 438
 439         if (refresh_only) {
 440                 refresh(verbose, pathspec);
 441                 goto finish;
 442         }
 443
 444         if (pathspec) {
 445                 int i;
 446                 struct path_exclude_check check;
 447
 448                 path_exclude_check_init(&check, &dir);
 449                 if (!seen)
 450                         seen = find_used_pathspec(pathspec);
 451                 for (i = 0; pathspec[i]; i++) {
 452                         if (!seen[i] && pathspec[i][0]
 453                             && !file_exists(pathspec[i])) {
 454                                 if (ignore_missing) {
 455                                         int dtype = DT_UNKNOWN;
 456                                         if (path_excluded(&check, pathspec[i], -1, &dtype))
 457                                                 dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
 458                                 } else
 459                                         die(_("pathspec '%s' did not match any files"),
 460                                             pathspec[i]);
 461                         }
 462                 }
 463                 free(seen);
 464                 path_exclude_check_clear(&check);
 465         }
 466
 467         plug_bulk_checkin();
 468
 469         exit_status |= add_files_to_cache(prefix, pathspec, flags);
 470
 471         if (add_new_files)
 472                 exit_status |= add_files(&dir, flags);
 473
 474         unplug_bulk_checkin();
 475
 476  finish:
 477         if (active_cache_changed) {
 478                 if (write_cache(newfd, active_cache, active_nr) ||
 479                     commit_locked_index(&lock_file))
 480                         die(_("Unable to write new index file"));
 481         }
 482
 483         return exit_status;
 484 }