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         "git add [options] [--] <filepattern>...",
  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 static void treat_gitlinks(const char **pathspec)
 125 {
 126         int i;
 127
 128         if (!pathspec || !*pathspec)
 129                 return;
 130
 131         for (i = 0; i < active_nr; i++) {
 132                 struct cache_entry *ce = active_cache[i];
 133                 if (S_ISGITLINK(ce->ce_mode)) {
 134                         int len = ce_namelen(ce), j;
 135                         for (j = 0; pathspec[j]; j++) {
 136                                 int len2 = strlen(pathspec[j]);
 137                                 if (len2 <= len || pathspec[j][len] != '/' ||
 138                                     memcmp(ce->name, pathspec[j], len))
 139                                         continue;
 140                                 if (len2 == len + 1)
 141                                         /* strip trailing slash */
 142                                         pathspec[j] = xstrndup(ce->name, len);
 143                                 else
 144                                         die (_("Path '%s' is in submodule '%.*s'"),
 145                                                 pathspec[j], len, ce->name);
 146                         }
 147                 }
 148         }
 149 }
 150
 151 static void refresh(int verbose, const char **pathspec)
 152 {
 153         char *seen;
 154         int i, specs;
 155
 156         for (specs = 0; pathspec[specs];  specs++)
 157                 /* nothing */;
 158         seen = xcalloc(specs, 1);
 159         refresh_index(&the_index, verbose ? REFRESH_IN_PORCELAIN : REFRESH_QUIET,
 160                       pathspec, seen, _("Unstaged changes after refreshing the index:"));
 161         for (i = 0; i < specs; i++) {
 162                 if (!seen[i])
 163                         die(_("pathspec '%s' did not match any files"), pathspec[i]);
 164         }
 165         free(seen);
 166 }
 167
 168 static const char **validate_pathspec(const char **argv, const char *prefix)
 169 {
 170         const char **pathspec = get_pathspec(prefix, argv);
 171
 172         if (pathspec) {
 173                 const char **p;
 174                 for (p = pathspec; *p; p++) {
 175                         if (has_symlink_leading_path(*p, strlen(*p))) {
 176                                 int len = prefix ? strlen(prefix) : 0;
 177                                 die(_("'%s' is beyond a symbolic link"), *p + len);
 178                         }
 179                 }
 180         }
 181
 182         return pathspec;
 183 }
 184
 185 int run_add_interactive(const char *revision, const char *patch_mode,
 186                         const char **pathspec)
 187 {
 188         int status, ac, pc = 0;
 189         const char **args;
 190
 191         if (pathspec)
 192                 while (pathspec[pc])
 193                         pc++;
 194
 195         args = xcalloc(sizeof(const char *), (pc + 5));
 196         ac = 0;
 197         args[ac++] = "add--interactive";
 198         if (patch_mode)
 199                 args[ac++] = patch_mode;
 200         if (revision)
 201                 args[ac++] = revision;
 202         args[ac++] = "--";
 203         if (pc) {
 204                 memcpy(&(args[ac]), pathspec, sizeof(const char *) * pc);
 205                 ac += pc;
 206         }
 207         args[ac] = NULL;
 208
 209         status = run_command_v_opt(args, RUN_GIT_CMD);
 210         free(args);
 211         return status;
 212 }
 213
 214 int interactive_add(int argc, const char **argv, const char *prefix, int patch)
 215 {
 216         const char **pathspec = NULL;
 217
 218         if (argc) {
 219                 pathspec = validate_pathspec(argv, prefix);
 220                 if (!pathspec)
 221                         return -1;
 222         }
 223
 224         return run_add_interactive(NULL,
 225                                    patch ? "--patch" : NULL,
 226                                    pathspec);
 227 }
 228
 229 static int edit_patch(int argc, const char **argv, const char *prefix)
 230 {
 231         char *file = xstrdup(git_path("ADD_EDIT.patch"));
 232         const char *apply_argv[] = { "apply", "--recount", "--cached",
 233                 NULL, NULL };
 234         struct child_process child;
 235         struct rev_info rev;
 236         int out;
 237         struct stat st;
 238
 239         apply_argv[3] = file;
 240
 241         git_config(git_diff_basic_config, NULL); /* no "diff" UI options */
 242
 243         if (read_cache() < 0)
 244                 die (_("Could not read the index"));
 245
 246         init_revisions(&rev, prefix);
 247         rev.diffopt.context = 7;
 248
 249         argc = setup_revisions(argc, argv, &rev, NULL);
 250         rev.diffopt.output_format = DIFF_FORMAT_PATCH;
 251         DIFF_OPT_SET(&rev.diffopt, IGNORE_DIRTY_SUBMODULES);
 252         out = open(file, O_CREAT | O_WRONLY, 0666);
 253         if (out < 0)
 254                 die (_("Could not open '%s' for writing."), file);
 255         rev.diffopt.file = xfdopen(out, "w");
 256         rev.diffopt.close_file = 1;
 257         if (run_diff_files(&rev, 0))
 258                 die (_("Could not write patch"));
 259
 260         launch_editor(file, NULL, NULL);
 261
 262         if (stat(file, &st))
 263                 die_errno(_("Could not stat '%s'"), file);
 264         if (!st.st_size)
 265                 die(_("Empty patch. Aborted."));
 266
 267         memset(&child, 0, sizeof(child));
 268         child.git_cmd = 1;
 269         child.argv = apply_argv;
 270         if (run_command(&child))
 271                 die (_("Could not apply '%s'"), file);
 272
 273         unlink(file);
 274         return 0;
 275 }
 276
 277 static struct lock_file lock_file;
 278
 279 static const char ignore_error[] =
 280 N_("The following paths are ignored by one of your .gitignore files:\n");
 281
 282 static int verbose = 0, show_only = 0, ignored_too = 0, refresh_only = 0;
 283 static int ignore_add_errors, addremove, intent_to_add, ignore_missing = 0;
 284
 285 static struct option builtin_add_options[] = {
 286         OPT__DRY_RUN(&show_only, "dry run"),
 287         OPT__VERBOSE(&verbose, "be verbose"),
 288         OPT_GROUP(""),
 289         OPT_BOOLEAN('i', "interactive", &add_interactive, "interactive picking"),
 290         OPT_BOOLEAN('p', "patch", &patch_interactive, "select hunks interactively"),
 291         OPT_BOOLEAN('e', "edit", &edit_interactive, "edit current diff and apply"),
 292         OPT__FORCE(&ignored_too, "allow adding otherwise ignored files"),
 293         OPT_BOOLEAN('u', "update", &take_worktree_changes, "update tracked files"),
 294         OPT_BOOLEAN('N', "intent-to-add", &intent_to_add, "record only the fact that the path will be added later"),
 295         OPT_BOOLEAN('A', "all", &addremove, "add changes from all tracked and untracked files"),
 296         OPT_BOOLEAN( 0 , "refresh", &refresh_only, "don't add, only refresh the index"),
 297         OPT_BOOLEAN( 0 , "ignore-errors", &ignore_add_errors, "just skip files which cannot be added because of errors"),
 298         OPT_BOOLEAN( 0 , "ignore-missing", &ignore_missing, "check if - even missing - files are ignored in dry run"),
 299         OPT_END(),
 300 };
 301
 302 static int add_config(const char *var, const char *value, void *cb)
 303 {
 304         if (!strcmp(var, "add.ignoreerrors") ||
 305             !strcmp(var, "add.ignore-errors")) {
 306                 ignore_add_errors = git_config_bool(var, value);
 307                 return 0;
 308         }
 309         return git_default_config(var, value, cb);
 310 }
 311
 312 static int add_files(struct dir_struct *dir, int flags)
 313 {
 314         int i, exit_status = 0;
 315
 316         if (dir->ignored_nr) {
 317                 fprintf(stderr, _(ignore_error));
 318                 for (i = 0; i < dir->ignored_nr; i++)
 319                         fprintf(stderr, "%s\n", dir->ignored[i]->name);
 320                 fprintf(stderr, _("Use -f if you really want to add them.\n"));
 321                 die(_("no files added"));
 322         }
 323
 324         for (i = 0; i < dir->nr; i++)
 325                 if (add_file_to_cache(dir->entries[i]->name, flags)) {
 326                         if (!ignore_add_errors)
 327                                 die(_("adding files failed"));
 328                         exit_status = 1;
 329                 }
 330         return exit_status;
 331 }
 332
 333 int cmd_add(int argc, const char **argv, const char *prefix)
 334 {
 335         int exit_status = 0;
 336         int newfd;
 337         const char **pathspec;
 338         struct dir_struct dir;
 339         int flags;
 340         int add_new_files;
 341         int require_pathspec;
 342         char *seen = NULL;
 343
 344         git_config(add_config, NULL);
 345
 346         argc = parse_options(argc, argv, prefix, builtin_add_options,
 347                           builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
 348         if (patch_interactive)
 349                 add_interactive = 1;
 350         if (add_interactive)
 351                 exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
 352
 353         if (edit_interactive)
 354                 return(edit_patch(argc, argv, prefix));
 355         argc--;
 356         argv++;
 357
 358         if (addremove && take_worktree_changes)
 359                 die(_("-A and -u are mutually incompatible"));
 360         if (!show_only && ignore_missing)
 361                 die(_("Option --ignore-missing can only be used together with --dry-run"));
 362         if ((addremove || take_worktree_changes) && !argc) {
 363                 static const char *here[2] = { ".", NULL };
 364                 argc = 1;
 365                 argv = here;
 366         }
 367
 368         add_new_files = !take_worktree_changes && !refresh_only;
 369         require_pathspec = !take_worktree_changes;
 370
 371         newfd = hold_locked_index(&lock_file, 1);
 372
 373         flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
 374                  (show_only ? ADD_CACHE_PRETEND : 0) |
 375                  (intent_to_add ? ADD_CACHE_INTENT : 0) |
 376                  (ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
 377                  (!(addremove || take_worktree_changes)
 378                   ? ADD_CACHE_IGNORE_REMOVAL : 0));
 379
 380         if (require_pathspec && argc == 0) {
 381                 fprintf(stderr, _("Nothing specified, nothing added.\n"));
 382                 fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
 383                 return 0;
 384         }
 385         pathspec = validate_pathspec(argv, prefix);
 386
 387         if (read_cache() < 0)
 388                 die(_("index file corrupt"));
 389         treat_gitlinks(pathspec);
 390
 391         if (add_new_files) {
 392                 int baselen;
 393
 394                 /* Set up the default git porcelain excludes */
 395                 memset(&dir, 0, sizeof(dir));
 396                 if (!ignored_too) {
 397                         dir.flags |= DIR_COLLECT_IGNORED;
 398                         setup_standard_excludes(&dir);
 399                 }
 400
 401                 /* This picks up the paths that are not tracked */
 402                 baselen = fill_directory(&dir, pathspec);
 403                 if (pathspec)
 404                         seen = prune_directory(&dir, pathspec, baselen);
 405         }
 406
 407         if (refresh_only) {
 408                 refresh(verbose, pathspec);
 409                 goto finish;
 410         }
 411
 412         if (pathspec) {
 413                 int i;
 414                 struct path_exclude_check check;
 415
 416                 path_exclude_check_init(&check, &dir);
 417                 if (!seen)
 418                         seen = find_pathspecs_matching_against_index(pathspec);
 419                 for (i = 0; pathspec[i]; i++) {
 420                         if (!seen[i] && pathspec[i][0]
 421                             && !file_exists(pathspec[i])) {
 422                                 if (ignore_missing) {
 423                                         int dtype = DT_UNKNOWN;
 424                                         if (is_path_excluded(&check, pathspec[i], -1, &dtype))
 425                                                 dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
 426                                 } else
 427                                         die(_("pathspec '%s' did not match any files"),
 428                                             pathspec[i]);
 429                         }
 430                 }
 431                 free(seen);
 432                 path_exclude_check_clear(&check);
 433         }
 434
 435         plug_bulk_checkin();
 436
 437         exit_status |= add_files_to_cache(prefix, pathspec, flags);
 438
 439         if (add_new_files)
 440                 exit_status |= add_files(&dir, flags);
 441
 442         unplug_bulk_checkin();
 443
 444  finish:
 445         if (active_cache_changed) {
 446                 if (write_cache(newfd, active_cache, active_nr) ||
 447                     commit_locked_index(&lock_file))
 448                         die(_("Unable to write new index file"));
 449         }
 450
 451         return exit_status;
 452 }