pathspec.c

   1 #include "cache.h"
   2 #include "config.h"
   3 #include "dir.h"
   4 #include "pathspec.h"
   5 #include "attr.h"
   6 #include "strvec.h"
   7 #include "quote.h"
   8
   9 /*
  10  * Finds which of the given pathspecs match items in the index.
  11  *
  12  * For each pathspec, sets the corresponding entry in the seen[] array
  13  * (which should be specs items long, i.e. the same size as pathspec)
  14  * to the nature of the "closest" (i.e. most specific) match found for
  15  * that pathspec in the index, if it was a closer type of match than
  16  * the existing entry.  As an optimization, matching is skipped
  17  * altogether if seen[] already only contains non-zero entries.
  18  *
  19  * If seen[] has not already been written to, it may make sense
  20  * to use find_pathspecs_matching_against_index() instead.
  21  */
  22 void add_pathspec_matches_against_index(const struct pathspec *pathspec,
  23                                         struct index_state *istate,
  24                                         char *seen)
  25 {
  26         int num_unmatched = 0, i;
  27
  28         /*
  29          * Since we are walking the index as if we were walking the directory,
  30          * we have to mark the matched pathspec as seen; otherwise we will
  31          * mistakenly think that the user gave a pathspec that did not match
  32          * anything.
  33          */
  34         for (i = 0; i < pathspec->nr; i++)
  35                 if (!seen[i])
  36                         num_unmatched++;
  37         if (!num_unmatched)
  38                 return;
  39         /* TODO: audit for interaction with sparse-index. */
  40         ensure_full_index(istate);
  41         for (i = 0; i < istate->cache_nr; i++) {
  42                 const struct cache_entry *ce = istate->cache[i];
  43                 ce_path_match(istate, ce, pathspec, seen);
  44         }
  45 }
  46
  47 /*
  48  * Finds which of the given pathspecs match items in the index.
  49  *
  50  * This is a one-shot wrapper around add_pathspec_matches_against_index()
  51  * which allocates, populates, and returns a seen[] array indicating the
  52  * nature of the "closest" (i.e. most specific) matches which each of the
  53  * given pathspecs achieves against all items in the index.
  54  */
  55 char *find_pathspecs_matching_against_index(const struct pathspec *pathspec,
  56                                             struct index_state *istate)
  57 {
  58         char *seen = xcalloc(pathspec->nr, 1);
  59         add_pathspec_matches_against_index(pathspec, istate, seen);
  60         return seen;
  61 }
  62
  63 /*
  64  * Magic pathspec
  65  *
  66  * Possible future magic semantics include stuff like:
  67  *
  68  *      { PATHSPEC_RECURSIVE, '*', "recursive" },
  69  *      { PATHSPEC_REGEXP, '\0', "regexp" },
  70  *
  71  */
  72
  73 static struct pathspec_magic {
  74         unsigned bit;
  75         char mnemonic; /* this cannot be ':'! */
  76         const char *name;
  77 } pathspec_magic[] = {
  78         { PATHSPEC_FROMTOP,  '/', "top" },
  79         { PATHSPEC_LITERAL, '\0', "literal" },
  80         { PATHSPEC_GLOB,    '\0', "glob" },
  81         { PATHSPEC_ICASE,   '\0', "icase" },
  82         { PATHSPEC_EXCLUDE,  '!', "exclude" },
  83         { PATHSPEC_ATTR,    '\0', "attr" },
  84 };
  85
  86 static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
  87 {
  88         int i;
  89         strbuf_addstr(sb, ":(");
  90         for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
  91                 if (magic & pathspec_magic[i].bit) {
  92                         if (sb->buf[sb->len - 1] != '(')
  93                                 strbuf_addch(sb, ',');
  94                         strbuf_addstr(sb, pathspec_magic[i].name);
  95                 }
  96         strbuf_addf(sb, ",prefix:%d)", prefixlen);
  97 }
  98
  99 static size_t strcspn_escaped(const char *s, const char *stop)
 100 {
 101         const char *i;
 102
 103         for (i = s; *i; i++) {
 104                 /* skip the escaped character */
 105                 if (i[0] == '\\' && i[1]) {
 106                         i++;
 107                         continue;
 108                 }
 109
 110                 if (strchr(stop, *i))
 111                         break;
 112         }
 113         return i - s;
 114 }
 115
 116 static inline int invalid_value_char(const char ch)
 117 {
 118         if (isalnum(ch) || strchr(",-_", ch))
 119                 return 0;
 120         return -1;
 121 }
 122
 123 static char *attr_value_unescape(const char *value)
 124 {
 125         const char *src;
 126         char *dst, *ret;
 127
 128         ret = xmallocz(strlen(value));
 129         for (src = value, dst = ret; *src; src++, dst++) {
 130                 if (*src == '\\') {
 131                         if (!src[1])
 132                                 die(_("Escape character '\\' not allowed as "
 133                                       "last character in attr value"));
 134                         src++;
 135                 }
 136                 if (invalid_value_char(*src))
 137                         die("cannot use '%c' for value matching", *src);
 138                 *dst = *src;
 139         }
 140         *dst = '\0';
 141         return ret;
 142 }
 143
 144 static void parse_pathspec_attr_match(struct pathspec_item *item, const char *value)
 145 {
 146         struct string_list_item *si;
 147         struct string_list list = STRING_LIST_INIT_DUP;
 148
 149         if (item->attr_check || item->attr_match)
 150                 die(_("Only one 'attr:' specification is allowed."));
 151
 152         if (!value || !*value)
 153                 die(_("attr spec must not be empty"));
 154
 155         string_list_split(&list, value, ' ', -1);
 156         string_list_remove_empty_items(&list, 0);
 157
 158         item->attr_check = attr_check_alloc();
 159         CALLOC_ARRAY(item->attr_match, list.nr);
 160
 161         for_each_string_list_item(si, &list) {
 162                 size_t attr_len;
 163                 char *attr_name;
 164                 const struct git_attr *a;
 165
 166                 int j = item->attr_match_nr++;
 167                 const char *attr = si->string;
 168                 struct attr_match *am = &item->attr_match[j];
 169
 170                 switch (*attr) {
 171                 case '!':
 172                         am->match_mode = MATCH_UNSPECIFIED;
 173                         attr++;
 174                         attr_len = strlen(attr);
 175                         break;
 176                 case '-':
 177                         am->match_mode = MATCH_UNSET;
 178                         attr++;
 179                         attr_len = strlen(attr);
 180                         break;
 181                 default:
 182                         attr_len = strcspn(attr, "=");
 183                         if (attr[attr_len] != '=')
 184                                 am->match_mode = MATCH_SET;
 185                         else {
 186                                 const char *v = &attr[attr_len + 1];
 187                                 am->match_mode = MATCH_VALUE;
 188                                 am->value = attr_value_unescape(v);
 189                         }
 190                         break;
 191                 }
 192
 193                 attr_name = xmemdupz(attr, attr_len);
 194                 a = git_attr(attr_name);
 195                 if (!a)
 196                         die(_("invalid attribute name %s"), attr_name);
 197
 198                 attr_check_append(item->attr_check, a);
 199
 200                 free(attr_name);
 201         }
 202
 203         if (item->attr_check->nr != item->attr_match_nr)
 204                 BUG("should have same number of entries");
 205
 206         string_list_clear(&list, 0);
 207 }
 208
 209 static inline int get_literal_global(void)
 210 {
 211         static int literal = -1;
 212
 213         if (literal < 0)
 214                 literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
 215
 216         return literal;
 217 }
 218
 219 static inline int get_glob_global(void)
 220 {
 221         static int glob = -1;
 222
 223         if (glob < 0)
 224                 glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
 225
 226         return glob;
 227 }
 228
 229 static inline int get_noglob_global(void)
 230 {
 231         static int noglob = -1;
 232
 233         if (noglob < 0)
 234                 noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
 235
 236         return noglob;
 237 }
 238
 239 static inline int get_icase_global(void)
 240 {
 241         static int icase = -1;
 242
 243         if (icase < 0)
 244                 icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
 245
 246         return icase;
 247 }
 248
 249 static int get_global_magic(int element_magic)
 250 {
 251         int global_magic = 0;
 252
 253         if (get_literal_global())
 254                 global_magic |= PATHSPEC_LITERAL;
 255
 256         /* --glob-pathspec is overridden by :(literal) */
 257         if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
 258                 global_magic |= PATHSPEC_GLOB;
 259
 260         if (get_glob_global() && get_noglob_global())
 261                 die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
 262
 263         if (get_icase_global())
 264                 global_magic |= PATHSPEC_ICASE;
 265
 266         if ((global_magic & PATHSPEC_LITERAL) &&
 267             (global_magic & ~PATHSPEC_LITERAL))
 268                 die(_("global 'literal' pathspec setting is incompatible "
 269                       "with all other global pathspec settings"));
 270
 271         /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
 272         if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
 273                 global_magic |= PATHSPEC_LITERAL;
 274
 275         return global_magic;
 276 }
 277
 278 /*
 279  * Parse the pathspec element looking for long magic
 280  *
 281  * saves all magic in 'magic'
 282  * if prefix magic is used, save the prefix length in 'prefix_len'
 283  * returns the position in 'elem' after all magic has been parsed
 284  */
 285 static const char *parse_long_magic(unsigned *magic, int *prefix_len,
 286                                     struct pathspec_item *item,
 287                                     const char *elem)
 288 {
 289         const char *pos;
 290         const char *nextat;
 291
 292         for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
 293                 size_t len = strcspn_escaped(pos, ",)");
 294                 int i;
 295
 296                 if (pos[len] == ',')
 297                         nextat = pos + len + 1; /* handle ',' */
 298                 else
 299                         nextat = pos + len; /* handle ')' and '\0' */
 300
 301                 if (!len)
 302                         continue;
 303
 304                 if (starts_with(pos, "prefix:")) {
 305                         char *endptr;
 306                         *prefix_len = strtol(pos + 7, &endptr, 10);
 307                         if (endptr - pos != len)
 308                                 die(_("invalid parameter for pathspec magic 'prefix'"));
 309                         continue;
 310                 }
 311
 312                 if (starts_with(pos, "attr:")) {
 313                         char *attr_body = xmemdupz(pos + 5, len - 5);
 314                         parse_pathspec_attr_match(item, attr_body);
 315                         *magic |= PATHSPEC_ATTR;
 316                         free(attr_body);
 317                         continue;
 318                 }
 319
 320                 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 321                         if (strlen(pathspec_magic[i].name) == len &&
 322                             !strncmp(pathspec_magic[i].name, pos, len)) {
 323                                 *magic |= pathspec_magic[i].bit;
 324                                 break;
 325                         }
 326                 }
 327
 328                 if (ARRAY_SIZE(pathspec_magic) <= i)
 329                         die(_("Invalid pathspec magic '%.*s' in '%s'"),
 330                             (int) len, pos, elem);
 331         }
 332
 333         if (*pos != ')')
 334                 die(_("Missing ')' at the end of pathspec magic in '%s'"),
 335                     elem);
 336         pos++;
 337
 338         return pos;
 339 }
 340
 341 /*
 342  * Parse the pathspec element looking for short magic
 343  *
 344  * saves all magic in 'magic'
 345  * returns the position in 'elem' after all magic has been parsed
 346  */
 347 static const char *parse_short_magic(unsigned *magic, const char *elem)
 348 {
 349         const char *pos;
 350
 351         for (pos = elem + 1; *pos && *pos != ':'; pos++) {
 352                 char ch = *pos;
 353                 int i;
 354
 355                 /* Special case alias for '!' */
 356                 if (ch == '^') {
 357                         *magic |= PATHSPEC_EXCLUDE;
 358                         continue;
 359                 }
 360
 361                 if (!is_pathspec_magic(ch))
 362                         break;
 363
 364                 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 365                         if (pathspec_magic[i].mnemonic == ch) {
 366                                 *magic |= pathspec_magic[i].bit;
 367                                 break;
 368                         }
 369                 }
 370
 371                 if (ARRAY_SIZE(pathspec_magic) <= i)
 372                         die(_("Unimplemented pathspec magic '%c' in '%s'"),
 373                             ch, elem);
 374         }
 375
 376         if (*pos == ':')
 377                 pos++;
 378
 379         return pos;
 380 }
 381
 382 static const char *parse_element_magic(unsigned *magic, int *prefix_len,
 383                                        struct pathspec_item *item,
 384                                        const char *elem)
 385 {
 386         if (elem[0] != ':' || get_literal_global())
 387                 return elem; /* nothing to do */
 388         else if (elem[1] == '(')
 389                 /* longhand */
 390                 return parse_long_magic(magic, prefix_len, item, elem);
 391         else
 392                 /* shorthand */
 393                 return parse_short_magic(magic, elem);
 394 }
 395
 396 /*
 397  * Perform the initialization of a pathspec_item based on a pathspec element.
 398  */
 399 static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
 400                                const char *prefix, int prefixlen,
 401                                const char *elt)
 402 {
 403         unsigned magic = 0, element_magic = 0;
 404         const char *copyfrom = elt;
 405         char *match;
 406         int pathspec_prefix = -1;
 407
 408         item->attr_check = NULL;
 409         item->attr_match = NULL;
 410         item->attr_match_nr = 0;
 411
 412         /* PATHSPEC_LITERAL_PATH ignores magic */
 413         if (flags & PATHSPEC_LITERAL_PATH) {
 414                 magic = PATHSPEC_LITERAL;
 415         } else {
 416                 copyfrom = parse_element_magic(&element_magic,
 417                                                &pathspec_prefix,
 418                                                item,
 419                                                elt);
 420                 magic |= element_magic;
 421                 magic |= get_global_magic(element_magic);
 422         }
 423
 424         item->magic = magic;
 425
 426         if (pathspec_prefix >= 0 &&
 427             (prefixlen || (prefix && *prefix)))
 428                 BUG("'prefix' magic is supposed to be used at worktree's root");
 429
 430         if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
 431                 die(_("%s: 'literal' and 'glob' are incompatible"), elt);
 432
 433         /* Create match string which will be used for pathspec matching */
 434         if (pathspec_prefix >= 0) {
 435                 match = xstrdup(copyfrom);
 436                 prefixlen = pathspec_prefix;
 437         } else if (magic & PATHSPEC_FROMTOP) {
 438                 match = xstrdup(copyfrom);
 439                 prefixlen = 0;
 440         } else {
 441                 match = prefix_path_gently(prefix, prefixlen,
 442                                            &prefixlen, copyfrom);
 443                 if (!match) {
 444                         const char *hint_path = get_git_work_tree();
 445                         if (!hint_path)
 446                                 hint_path = get_git_dir();
 447                         die(_("%s: '%s' is outside repository at '%s'"), elt,
 448                             copyfrom, absolute_path(hint_path));
 449                 }
 450         }
 451
 452         item->match = match;
 453         item->len = strlen(item->match);
 454         item->prefix = prefixlen;
 455
 456         /*
 457          * Prefix the pathspec (keep all magic) and assign to
 458          * original. Useful for passing to another command.
 459          */
 460         if ((flags & PATHSPEC_PREFIX_ORIGIN) &&
 461             !get_literal_global()) {
 462                 struct strbuf sb = STRBUF_INIT;
 463
 464                 /* Preserve the actual prefix length of each pattern */
 465                 prefix_magic(&sb, prefixlen, element_magic);
 466
 467                 strbuf_addstr(&sb, match);
 468                 item->original = strbuf_detach(&sb, NULL);
 469         } else {
 470                 item->original = xstrdup(elt);
 471         }
 472
 473         if (magic & PATHSPEC_LITERAL) {
 474                 item->nowildcard_len = item->len;
 475         } else {
 476                 item->nowildcard_len = simple_length(item->match);
 477                 if (item->nowildcard_len < prefixlen)
 478                         item->nowildcard_len = prefixlen;
 479         }
 480
 481         item->flags = 0;
 482         if (magic & PATHSPEC_GLOB) {
 483                 /*
 484                  * FIXME: should we enable ONESTAR in _GLOB for
 485                  * pattern "* * / * . c"?
 486                  */
 487         } else {
 488                 if (item->nowildcard_len < item->len &&
 489                     item->match[item->nowildcard_len] == '*' &&
 490                     no_wildcard(item->match + item->nowildcard_len + 1))
 491                         item->flags |= PATHSPEC_ONESTAR;
 492         }
 493
 494         /* sanity checks, pathspec matchers assume these are sane */
 495         if (item->nowildcard_len > item->len ||
 496             item->prefix         > item->len) {
 497                 BUG("error initializing pathspec_item");
 498         }
 499 }
 500
 501 static int pathspec_item_cmp(const void *a_, const void *b_)
 502 {
 503         struct pathspec_item *a, *b;
 504
 505         a = (struct pathspec_item *)a_;
 506         b = (struct pathspec_item *)b_;
 507         return strcmp(a->match, b->match);
 508 }
 509
 510 static void NORETURN unsupported_magic(const char *pattern,
 511                                        unsigned magic)
 512 {
 513         struct strbuf sb = STRBUF_INIT;
 514         int i;
 515         for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 516                 const struct pathspec_magic *m = pathspec_magic + i;
 517                 if (!(magic & m->bit))
 518                         continue;
 519                 if (sb.len)
 520                         strbuf_addstr(&sb, ", ");
 521
 522                 if (m->mnemonic)
 523                         strbuf_addf(&sb, _("'%s' (mnemonic: '%c')"),
 524                                     m->name, m->mnemonic);
 525                 else
 526                         strbuf_addf(&sb, "'%s'", m->name);
 527         }
 528         /*
 529          * We may want to substitute "this command" with a command
 530          * name. E.g. when add--interactive dies when running
 531          * "checkout -p"
 532          */
 533         die(_("%s: pathspec magic not supported by this command: %s"),
 534             pattern, sb.buf);
 535 }
 536
 537 void parse_pathspec(struct pathspec *pathspec,
 538                     unsigned magic_mask, unsigned flags,
 539                     const char *prefix, const char **argv)
 540 {
 541         struct pathspec_item *item;
 542         const char *entry = argv ? *argv : NULL;
 543         int i, n, prefixlen, nr_exclude = 0;
 544
 545         memset(pathspec, 0, sizeof(*pathspec));
 546
 547         if (flags & PATHSPEC_MAXDEPTH_VALID)
 548                 pathspec->magic |= PATHSPEC_MAXDEPTH;
 549
 550         /* No arguments, no prefix -> no pathspec */
 551         if (!entry && !prefix)
 552                 return;
 553
 554         if ((flags & PATHSPEC_PREFER_CWD) &&
 555             (flags & PATHSPEC_PREFER_FULL))
 556                 BUG("PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible");
 557
 558         /* No arguments with prefix -> prefix pathspec */
 559         if (!entry) {
 560                 if (flags & PATHSPEC_PREFER_FULL)
 561                         return;
 562
 563                 if (!(flags & PATHSPEC_PREFER_CWD))
 564                         BUG("PATHSPEC_PREFER_CWD requires arguments");
 565
 566                 pathspec->items = CALLOC_ARRAY(item, 1);
 567                 item->match = xstrdup(prefix);
 568                 item->original = xstrdup(prefix);
 569                 item->nowildcard_len = item->len = strlen(prefix);
 570                 item->prefix = item->len;
 571                 pathspec->nr = 1;
 572                 return;
 573         }
 574
 575         n = 0;
 576         while (argv[n]) {
 577                 if (*argv[n] == '\0')
 578                         die("empty string is not a valid pathspec. "
 579                                   "please use . instead if you meant to match all paths");
 580                 n++;
 581         }
 582
 583         pathspec->nr = n;
 584         ALLOC_ARRAY(pathspec->items, n + 1);
 585         item = pathspec->items;
 586         prefixlen = prefix ? strlen(prefix) : 0;
 587
 588         for (i = 0; i < n; i++) {
 589                 entry = argv[i];
 590
 591                 init_pathspec_item(item + i, flags, prefix, prefixlen, entry);
 592
 593                 if (item[i].magic & PATHSPEC_EXCLUDE)
 594                         nr_exclude++;
 595                 if (item[i].magic & magic_mask)
 596                         unsupported_magic(entry, item[i].magic & magic_mask);
 597
 598                 if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) &&
 599                     has_symlink_leading_path(item[i].match, item[i].len)) {
 600                         die(_("pathspec '%s' is beyond a symbolic link"), entry);
 601                 }
 602
 603                 if (item[i].nowildcard_len < item[i].len)
 604                         pathspec->has_wildcard = 1;
 605                 pathspec->magic |= item[i].magic;
 606         }
 607
 608         /*
 609          * If everything is an exclude pattern, add one positive pattern
 610          * that matches everything. We allocated an extra one for this.
 611          */
 612         if (nr_exclude == n) {
 613                 int plen = (!(flags & PATHSPEC_PREFER_CWD)) ? 0 : prefixlen;
 614                 init_pathspec_item(item + n, 0, prefix, plen, "");
 615                 pathspec->nr++;
 616         }
 617
 618         if (pathspec->magic & PATHSPEC_MAXDEPTH) {
 619                 if (flags & PATHSPEC_KEEP_ORDER)
 620                         BUG("PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible");
 621                 QSORT(pathspec->items, pathspec->nr, pathspec_item_cmp);
 622         }
 623 }
 624
 625 void parse_pathspec_file(struct pathspec *pathspec, unsigned magic_mask,
 626                          unsigned flags, const char *prefix,
 627                          const char *file, int nul_term_line)
 628 {
 629         struct strvec parsed_file = STRVEC_INIT;
 630         strbuf_getline_fn getline_fn = nul_term_line ? strbuf_getline_nul :
 631                                                        strbuf_getline;
 632         struct strbuf buf = STRBUF_INIT;
 633         struct strbuf unquoted = STRBUF_INIT;
 634         FILE *in;
 635
 636         if (!strcmp(file, "-"))
 637                 in = stdin;
 638         else
 639                 in = xfopen(file, "r");
 640
 641         while (getline_fn(&buf, in) != EOF) {
 642                 if (!nul_term_line && buf.buf[0] == '"') {
 643                         strbuf_reset(&unquoted);
 644                         if (unquote_c_style(&unquoted, buf.buf, NULL))
 645                                 die(_("line is badly quoted: %s"), buf.buf);
 646                         strbuf_swap(&buf, &unquoted);
 647                 }
 648                 strvec_push(&parsed_file, buf.buf);
 649                 strbuf_reset(&buf);
 650         }
 651
 652         strbuf_release(&unquoted);
 653         strbuf_release(&buf);
 654         if (in != stdin)
 655                 fclose(in);
 656
 657         parse_pathspec(pathspec, magic_mask, flags, prefix, parsed_file.v);
 658         strvec_clear(&parsed_file);
 659 }
 660
 661 void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
 662 {
 663         int i, j;
 664
 665         *dst = *src;
 666         ALLOC_ARRAY(dst->items, dst->nr);
 667         COPY_ARRAY(dst->items, src->items, dst->nr);
 668
 669         for (i = 0; i < dst->nr; i++) {
 670                 struct pathspec_item *d = &dst->items[i];
 671                 struct pathspec_item *s = &src->items[i];
 672
 673                 d->match = xstrdup(s->match);
 674                 d->original = xstrdup(s->original);
 675
 676                 ALLOC_ARRAY(d->attr_match, d->attr_match_nr);
 677                 COPY_ARRAY(d->attr_match, s->attr_match, d->attr_match_nr);
 678                 for (j = 0; j < d->attr_match_nr; j++) {
 679                         const char *value = s->attr_match[j].value;
 680                         d->attr_match[j].value = xstrdup_or_null(value);
 681                 }
 682
 683                 d->attr_check = attr_check_dup(s->attr_check);
 684         }
 685 }
 686
 687 void clear_pathspec(struct pathspec *pathspec)
 688 {
 689         int i, j;
 690
 691         for (i = 0; i < pathspec->nr; i++) {
 692                 free(pathspec->items[i].match);
 693                 free(pathspec->items[i].original);
 694
 695                 for (j = 0; j < pathspec->items[i].attr_match_nr; j++)
 696                         free(pathspec->items[i].attr_match[j].value);
 697                 free(pathspec->items[i].attr_match);
 698
 699                 if (pathspec->items[i].attr_check)
 700                         attr_check_free(pathspec->items[i].attr_check);
 701         }
 702
 703         FREE_AND_NULL(pathspec->items);
 704         pathspec->nr = 0;
 705 }
 706
 707 int match_pathspec_attrs(struct index_state *istate,
 708                          const char *name, int namelen,
 709                          const struct pathspec_item *item)
 710 {
 711         int i;
 712         char *to_free = NULL;
 713
 714         if (name[namelen])
 715                 name = to_free = xmemdupz(name, namelen);
 716
 717         git_check_attr(istate, name, item->attr_check);
 718
 719         free(to_free);
 720
 721         for (i = 0; i < item->attr_match_nr; i++) {
 722                 const char *value;
 723                 int matched;
 724                 enum attr_match_mode match_mode;
 725
 726                 value = item->attr_check->items[i].value;
 727                 match_mode = item->attr_match[i].match_mode;
 728
 729                 if (ATTR_TRUE(value))
 730                         matched = (match_mode == MATCH_SET);
 731                 else if (ATTR_FALSE(value))
 732                         matched = (match_mode == MATCH_UNSET);
 733                 else if (ATTR_UNSET(value))
 734                         matched = (match_mode == MATCH_UNSPECIFIED);
 735                 else
 736                         matched = (match_mode == MATCH_VALUE &&
 737                                    !strcmp(item->attr_match[i].value, value));
 738                 if (!matched)
 739                         return 0;
 740         }
 741
 742         return 1;
 743 }