builtin/ls-files.c

   1 /*
   2  * This merges the file listing in the directory cache index
   3  * with the actual working directory list, and shows different
   4  * combinations of the two.
   5  *
   6  * Copyright (C) Linus Torvalds, 2005
   7  */
   8 #include "cache.h"
   9 #include "quote.h"
  10 #include "dir.h"
  11 #include "builtin.h"
  12 #include "tree.h"
  13 #include "parse-options.h"
  14 #include "resolve-undo.h"
  15 #include "string-list.h"
  16 #include "pathspec.h"
  17
  18 static int abbrev;
  19 static int show_deleted;
  20 static int show_cached;
  21 static int show_others;
  22 static int show_stage;
  23 static int show_unmerged;
  24 static int show_resolve_undo;
  25 static int show_modified;
  26 static int show_killed;
  27 static int show_valid_bit;
  28 static int line_terminator = '\n';
  29 static int debug_mode;
  30 static int show_eol;
  31
  32 static const char *prefix;
  33 static int max_prefix_len;
  34 static int prefix_len;
  35 static struct pathspec pathspec;
  36 static int error_unmatch;
  37 static char *ps_matched;
  38 static const char *with_tree;
  39 static int exc_given;
  40 static int exclude_args;
  41
  42 static const char *tag_cached = "";
  43 static const char *tag_unmerged = "";
  44 static const char *tag_removed = "";
  45 static const char *tag_other = "";
  46 static const char *tag_killed = "";
  47 static const char *tag_modified = "";
  48 static const char *tag_skip_worktree = "";
  49 static const char *tag_resolve_undo = "";
  50
  51 static void write_eolinfo(const struct cache_entry *ce, const char *path)
  52 {
  53         if (!show_eol)
  54                 return;
  55         else {
  56                 struct stat st;
  57                 const char *i_txt = "";
  58                 const char *w_txt = "";
  59                 const char *a_txt = get_convert_attr_ascii(path);
  60                 if (ce && S_ISREG(ce->ce_mode))
  61                         i_txt = get_cached_convert_stats_ascii(ce->name);
  62                 if (!lstat(path, &st) && S_ISREG(st.st_mode))
  63                         w_txt = get_wt_convert_stats_ascii(path);
  64                 printf("i/%-5s w/%-5s attr/%-17s\t", i_txt, w_txt, a_txt);
  65         }
  66 }
  67
  68 static void write_name(const char *name)
  69 {
  70         /*
  71          * With "--full-name", prefix_len=0; this caller needs to pass
  72          * an empty string in that case (a NULL is good for "").
  73          */
  74         write_name_quoted_relative(name, prefix_len ? prefix : NULL,
  75                                    stdout, line_terminator);
  76 }
  77
  78 static void show_dir_entry(const char *tag, struct dir_entry *ent)
  79 {
  80         int len = max_prefix_len;
  81
  82         if (len >= ent->len)
  83                 die("git ls-files: internal error - directory entry not superset of prefix");
  84
  85         if (!dir_path_match(ent, &pathspec, len, ps_matched))
  86                 return;
  87
  88         fputs(tag, stdout);
  89         write_eolinfo(NULL, ent->name);
  90         write_name(ent->name);
  91 }
  92
  93 static void show_other_files(struct dir_struct *dir)
  94 {
  95         int i;
  96
  97         for (i = 0; i < dir->nr; i++) {
  98                 struct dir_entry *ent = dir->entries[i];
  99                 if (!cache_name_is_other(ent->name, ent->len))
 100                         continue;
 101                 show_dir_entry(tag_other, ent);
 102         }
 103 }
 104
 105 static void show_killed_files(struct dir_struct *dir)
 106 {
 107         int i;
 108         for (i = 0; i < dir->nr; i++) {
 109                 struct dir_entry *ent = dir->entries[i];
 110                 char *cp, *sp;
 111                 int pos, len, killed = 0;
 112
 113                 for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
 114                         sp = strchr(cp, '/');
 115                         if (!sp) {
 116                                 /* If ent->name is prefix of an entry in the
 117                                  * cache, it will be killed.
 118                                  */
 119                                 pos = cache_name_pos(ent->name, ent->len);
 120                                 if (0 <= pos)
 121                                         die("bug in show-killed-files");
 122                                 pos = -pos - 1;
 123                                 while (pos < active_nr &&
 124                                        ce_stage(active_cache[pos]))
 125                                         pos++; /* skip unmerged */
 126                                 if (active_nr <= pos)
 127                                         break;
 128                                 /* pos points at a name immediately after
 129                                  * ent->name in the cache.  Does it expect
 130                                  * ent->name to be a directory?
 131                                  */
 132                                 len = ce_namelen(active_cache[pos]);
 133                                 if ((ent->len < len) &&
 134                                     !strncmp(active_cache[pos]->name,
 135                                              ent->name, ent->len) &&
 136                                     active_cache[pos]->name[ent->len] == '/')
 137                                         killed = 1;
 138                                 break;
 139                         }
 140                         if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
 141                                 /* If any of the leading directories in
 142                                  * ent->name is registered in the cache,
 143                                  * ent->name will be killed.
 144                                  */
 145                                 killed = 1;
 146                                 break;
 147                         }
 148                 }
 149                 if (killed)
 150                         show_dir_entry(tag_killed, dir->entries[i]);
 151         }
 152 }
 153
 154 static void show_ce_entry(const char *tag, const struct cache_entry *ce)
 155 {
 156         int len = max_prefix_len;
 157
 158         if (len >= ce_namelen(ce))
 159                 die("git ls-files: internal error - cache entry not superset of prefix");
 160
 161         if (!match_pathspec(&pathspec, ce->name, ce_namelen(ce),
 162                             len, ps_matched,
 163                             S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode)))
 164                 return;
 165
 166         if (tag && *tag && show_valid_bit &&
 167             (ce->ce_flags & CE_VALID)) {
 168                 static char alttag[4];
 169                 memcpy(alttag, tag, 3);
 170                 if (isalpha(tag[0]))
 171                         alttag[0] = tolower(tag[0]);
 172                 else if (tag[0] == '?')
 173                         alttag[0] = '!';
 174                 else {
 175                         alttag[0] = 'v';
 176                         alttag[1] = tag[0];
 177                         alttag[2] = ' ';
 178                         alttag[3] = 0;
 179                 }
 180                 tag = alttag;
 181         }
 182
 183         if (!show_stage) {
 184                 fputs(tag, stdout);
 185         } else {
 186                 printf("%s%06o %s %d\t",
 187                        tag,
 188                        ce->ce_mode,
 189                        find_unique_abbrev(ce->sha1,abbrev),
 190                        ce_stage(ce));
 191         }
 192         write_eolinfo(ce, ce->name);
 193         write_name(ce->name);
 194         if (debug_mode) {
 195                 const struct stat_data *sd = &ce->ce_stat_data;
 196
 197                 printf("  ctime: %d:%d\n", sd->sd_ctime.sec, sd->sd_ctime.nsec);
 198                 printf("  mtime: %d:%d\n", sd->sd_mtime.sec, sd->sd_mtime.nsec);
 199                 printf("  dev: %d\tino: %d\n", sd->sd_dev, sd->sd_ino);
 200                 printf("  uid: %d\tgid: %d\n", sd->sd_uid, sd->sd_gid);
 201                 printf("  size: %d\tflags: %x\n", sd->sd_size, ce->ce_flags);
 202         }
 203 }
 204
 205 static void show_ru_info(void)
 206 {
 207         struct string_list_item *item;
 208
 209         if (!the_index.resolve_undo)
 210                 return;
 211
 212         for_each_string_list_item(item, the_index.resolve_undo) {
 213                 const char *path = item->string;
 214                 struct resolve_undo_info *ui = item->util;
 215                 int i, len;
 216
 217                 len = strlen(path);
 218                 if (len < max_prefix_len)
 219                         continue; /* outside of the prefix */
 220                 if (!match_pathspec(&pathspec, path, len,
 221                                     max_prefix_len, ps_matched, 0))
 222                         continue; /* uninterested */
 223                 for (i = 0; i < 3; i++) {
 224                         if (!ui->mode[i])
 225                                 continue;
 226                         printf("%s%06o %s %d\t", tag_resolve_undo, ui->mode[i],
 227                                find_unique_abbrev(ui->sha1[i], abbrev),
 228                                i + 1);
 229                         write_name(path);
 230                 }
 231         }
 232 }
 233
 234 static int ce_excluded(struct dir_struct *dir, const struct cache_entry *ce)
 235 {
 236         int dtype = ce_to_dtype(ce);
 237         return is_excluded(dir, ce->name, &dtype);
 238 }
 239
 240 static void show_files(struct dir_struct *dir)
 241 {
 242         int i;
 243
 244         /* For cached/deleted files we don't need to even do the readdir */
 245         if (show_others || show_killed) {
 246                 if (!show_others)
 247                         dir->flags |= DIR_COLLECT_KILLED_ONLY;
 248                 fill_directory(dir, &pathspec);
 249                 if (show_others)
 250                         show_other_files(dir);
 251                 if (show_killed)
 252                         show_killed_files(dir);
 253         }
 254         if (show_cached || show_stage) {
 255                 for (i = 0; i < active_nr; i++) {
 256                         const struct cache_entry *ce = active_cache[i];
 257                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 258                             !ce_excluded(dir, ce))
 259                                 continue;
 260                         if (show_unmerged && !ce_stage(ce))
 261                                 continue;
 262                         if (ce->ce_flags & CE_UPDATE)
 263                                 continue;
 264                         show_ce_entry(ce_stage(ce) ? tag_unmerged :
 265                                 (ce_skip_worktree(ce) ? tag_skip_worktree : tag_cached), ce);
 266                 }
 267         }
 268         if (show_deleted || show_modified) {
 269                 for (i = 0; i < active_nr; i++) {
 270                         const struct cache_entry *ce = active_cache[i];
 271                         struct stat st;
 272                         int err;
 273                         if ((dir->flags & DIR_SHOW_IGNORED) &&
 274                             !ce_excluded(dir, ce))
 275                                 continue;
 276                         if (ce->ce_flags & CE_UPDATE)
 277                                 continue;
 278                         if (ce_skip_worktree(ce))
 279                                 continue;
 280                         err = lstat(ce->name, &st);
 281                         if (show_deleted && err)
 282                                 show_ce_entry(tag_removed, ce);
 283                         if (show_modified && ce_modified(ce, &st, 0))
 284                                 show_ce_entry(tag_modified, ce);
 285                 }
 286         }
 287 }
 288
 289 /*
 290  * Prune the index to only contain stuff starting with "prefix"
 291  */
 292 static void prune_cache(const char *prefix)
 293 {
 294         int pos = cache_name_pos(prefix, max_prefix_len);
 295         unsigned int first, last;
 296
 297         if (pos < 0)
 298                 pos = -pos-1;
 299         memmove(active_cache, active_cache + pos,
 300                 (active_nr - pos) * sizeof(struct cache_entry *));
 301         active_nr -= pos;
 302         first = 0;
 303         last = active_nr;
 304         while (last > first) {
 305                 int next = (last + first) >> 1;
 306                 const struct cache_entry *ce = active_cache[next];
 307                 if (!strncmp(ce->name, prefix, max_prefix_len)) {
 308                         first = next+1;
 309                         continue;
 310                 }
 311                 last = next;
 312         }
 313         active_nr = last;
 314 }
 315
 316 /*
 317  * Read the tree specified with --with-tree option
 318  * (typically, HEAD) into stage #1 and then
 319  * squash them down to stage #0.  This is used for
 320  * --error-unmatch to list and check the path patterns
 321  * that were given from the command line.  We are not
 322  * going to write this index out.
 323  */
 324 void overlay_tree_on_cache(const char *tree_name, const char *prefix)
 325 {
 326         struct tree *tree;
 327         unsigned char sha1[20];
 328         struct pathspec pathspec;
 329         struct cache_entry *last_stage0 = NULL;
 330         int i;
 331
 332         if (get_sha1(tree_name, sha1))
 333                 die("tree-ish %s not found.", tree_name);
 334         tree = parse_tree_indirect(sha1);
 335         if (!tree)
 336                 die("bad tree-ish %s", tree_name);
 337
 338         /* Hoist the unmerged entries up to stage #3 to make room */
 339         for (i = 0; i < active_nr; i++) {
 340                 struct cache_entry *ce = active_cache[i];
 341                 if (!ce_stage(ce))
 342                         continue;
 343                 ce->ce_flags |= CE_STAGEMASK;
 344         }
 345
 346         if (prefix) {
 347                 static const char *(matchbuf[1]);
 348                 matchbuf[0] = NULL;
 349                 parse_pathspec(&pathspec, PATHSPEC_ALL_MAGIC,
 350                                PATHSPEC_PREFER_CWD, prefix, matchbuf);
 351         } else
 352                 memset(&pathspec, 0, sizeof(pathspec));
 353         if (read_tree(tree, 1, &pathspec))
 354                 die("unable to read tree entries %s", tree_name);
 355
 356         for (i = 0; i < active_nr; i++) {
 357                 struct cache_entry *ce = active_cache[i];
 358                 switch (ce_stage(ce)) {
 359                 case 0:
 360                         last_stage0 = ce;
 361                         /* fallthru */
 362                 default:
 363                         continue;
 364                 case 1:
 365                         /*
 366                          * If there is stage #0 entry for this, we do not
 367                          * need to show it.  We use CE_UPDATE bit to mark
 368                          * such an entry.
 369                          */
 370                         if (last_stage0 &&
 371                             !strcmp(last_stage0->name, ce->name))
 372                                 ce->ce_flags |= CE_UPDATE;
 373                 }
 374         }
 375 }
 376
 377 static const char * const ls_files_usage[] = {
 378         N_("git ls-files [<options>] [<file>...]"),
 379         NULL
 380 };
 381
 382 static int option_parse_exclude(const struct option *opt,
 383                                 const char *arg, int unset)
 384 {
 385         struct string_list *exclude_list = opt->value;
 386
 387         exc_given = 1;
 388         string_list_append(exclude_list, arg);
 389
 390         return 0;
 391 }
 392
 393 static int option_parse_exclude_from(const struct option *opt,
 394                                      const char *arg, int unset)
 395 {
 396         struct dir_struct *dir = opt->value;
 397
 398         exc_given = 1;
 399         add_excludes_from_file(dir, arg);
 400
 401         return 0;
 402 }
 403
 404 static int option_parse_exclude_standard(const struct option *opt,
 405                                          const char *arg, int unset)
 406 {
 407         struct dir_struct *dir = opt->value;
 408
 409         exc_given = 1;
 410         setup_standard_excludes(dir);
 411
 412         return 0;
 413 }
 414
 415 int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix)
 416 {
 417         int require_work_tree = 0, show_tag = 0, i;
 418         const char *max_prefix;
 419         struct dir_struct dir;
 420         struct exclude_list *el;
 421         struct string_list exclude_list = STRING_LIST_INIT_NODUP;
 422         struct option builtin_ls_files_options[] = {
 423                 /* Think twice before adding "--nul" synonym to this */
 424                 OPT_SET_INT('z', NULL, &line_terminator,
 425                         N_("paths are separated with NUL character"), '\0'),
 426                 OPT_BOOL('t', NULL, &show_tag,
 427                         N_("identify the file status with tags")),
 428                 OPT_BOOL('v', NULL, &show_valid_bit,
 429                         N_("use lowercase letters for 'assume unchanged' files")),
 430                 OPT_BOOL('c', "cached", &show_cached,
 431                         N_("show cached files in the output (default)")),
 432                 OPT_BOOL('d', "deleted", &show_deleted,
 433                         N_("show deleted files in the output")),
 434                 OPT_BOOL('m', "modified", &show_modified,
 435                         N_("show modified files in the output")),
 436                 OPT_BOOL('o', "others", &show_others,
 437                         N_("show other files in the output")),
 438                 OPT_BIT('i', "ignored", &dir.flags,
 439                         N_("show ignored files in the output"),
 440                         DIR_SHOW_IGNORED),
 441                 OPT_BOOL('s', "stage", &show_stage,
 442                         N_("show staged contents' object name in the output")),
 443                 OPT_BOOL('k', "killed", &show_killed,
 444                         N_("show files on the filesystem that need to be removed")),
 445                 OPT_BIT(0, "directory", &dir.flags,
 446                         N_("show 'other' directories' names only"),
 447                         DIR_SHOW_OTHER_DIRECTORIES),
 448                 OPT_BOOL(0, "eol", &show_eol, N_("show line endings of files")),
 449                 OPT_NEGBIT(0, "empty-directory", &dir.flags,
 450                         N_("don't show empty directories"),
 451                         DIR_HIDE_EMPTY_DIRECTORIES),
 452                 OPT_BOOL('u', "unmerged", &show_unmerged,
 453                         N_("show unmerged files in the output")),
 454                 OPT_BOOL(0, "resolve-undo", &show_resolve_undo,
 455                             N_("show resolve-undo information")),
 456                 { OPTION_CALLBACK, 'x', "exclude", &exclude_list, N_("pattern"),
 457                         N_("skip files matching pattern"),
 458                         0, option_parse_exclude },
 459                 { OPTION_CALLBACK, 'X', "exclude-from", &dir, N_("file"),
 460                         N_("exclude patterns are read from <file>"),
 461                         0, option_parse_exclude_from },
 462                 OPT_STRING(0, "exclude-per-directory", &dir.exclude_per_dir, N_("file"),
 463                         N_("read additional per-directory exclude patterns in <file>")),
 464                 { OPTION_CALLBACK, 0, "exclude-standard", &dir, NULL,
 465                         N_("add the standard git exclusions"),
 466                         PARSE_OPT_NOARG, option_parse_exclude_standard },
 467                 { OPTION_SET_INT, 0, "full-name", &prefix_len, NULL,
 468                         N_("make the output relative to the project top directory"),
 469                         PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL },
 470                 OPT_BOOL(0, "error-unmatch", &error_unmatch,
 471                         N_("if any <file> is not in the index, treat this as an error")),
 472                 OPT_STRING(0, "with-tree", &with_tree, N_("tree-ish"),
 473                         N_("pretend that paths removed since <tree-ish> are still present")),
 474                 OPT__ABBREV(&abbrev),
 475                 OPT_BOOL(0, "debug", &debug_mode, N_("show debugging data")),
 476                 OPT_END()
 477         };
 478
 479         if (argc == 2 && !strcmp(argv[1], "-h"))
 480                 usage_with_options(ls_files_usage, builtin_ls_files_options);
 481
 482         memset(&dir, 0, sizeof(dir));
 483         prefix = cmd_prefix;
 484         if (prefix)
 485                 prefix_len = strlen(prefix);
 486         git_config(git_default_config, NULL);
 487
 488         if (read_cache() < 0)
 489                 die("index file corrupt");
 490
 491         argc = parse_options(argc, argv, prefix, builtin_ls_files_options,
 492                         ls_files_usage, 0);
 493         el = add_exclude_list(&dir, EXC_CMDL, "--exclude option");
 494         for (i = 0; i < exclude_list.nr; i++) {
 495                 add_exclude(exclude_list.items[i].string, "", 0, el, --exclude_args);
 496         }
 497         if (show_tag || show_valid_bit) {
 498                 tag_cached = "H ";
 499                 tag_unmerged = "M ";
 500                 tag_removed = "R ";
 501                 tag_modified = "C ";
 502                 tag_other = "? ";
 503                 tag_killed = "K ";
 504                 tag_skip_worktree = "S ";
 505                 tag_resolve_undo = "U ";
 506         }
 507         if (show_modified || show_others || show_deleted || (dir.flags & DIR_SHOW_IGNORED) || show_killed)
 508                 require_work_tree = 1;
 509         if (show_unmerged)
 510                 /*
 511                  * There's no point in showing unmerged unless
 512                  * you also show the stage information.
 513                  */
 514                 show_stage = 1;
 515         if (dir.exclude_per_dir)
 516                 exc_given = 1;
 517
 518         if (require_work_tree && !is_inside_work_tree())
 519                 setup_work_tree();
 520
 521         parse_pathspec(&pathspec, 0,
 522                        PATHSPEC_PREFER_CWD |
 523                        PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
 524                        prefix, argv);
 525
 526         /* Find common prefix for all pathspec's */
 527         max_prefix = common_prefix(&pathspec);
 528         max_prefix_len = max_prefix ? strlen(max_prefix) : 0;
 529
 530         /* Treat unmatching pathspec elements as errors */
 531         if (pathspec.nr && error_unmatch)
 532                 ps_matched = xcalloc(pathspec.nr, 1);
 533
 534         if ((dir.flags & DIR_SHOW_IGNORED) && !exc_given)
 535                 die("ls-files --ignored needs some exclude pattern");
 536
 537         /* With no flags, we default to showing the cached files */
 538         if (!(show_stage || show_deleted || show_others || show_unmerged ||
 539               show_killed || show_modified || show_resolve_undo))
 540                 show_cached = 1;
 541
 542         if (max_prefix)
 543                 prune_cache(max_prefix);
 544         if (with_tree) {
 545                 /*
 546                  * Basic sanity check; show-stages and show-unmerged
 547                  * would not make any sense with this option.
 548                  */
 549                 if (show_stage || show_unmerged)
 550                         die("ls-files --with-tree is incompatible with -s or -u");
 551                 overlay_tree_on_cache(with_tree, max_prefix);
 552         }
 553         show_files(&dir);
 554         if (show_resolve_undo)
 555                 show_ru_info();
 556
 557         if (ps_matched) {
 558                 int bad;
 559                 bad = report_path_error(ps_matched, &pathspec, prefix);
 560                 if (bad)
 561                         fprintf(stderr, "Did you forget to 'git add'?\n");
 562
 563                 return bad ? 1 : 0;
 564         }
 565
 566         return 0;
 567 }