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