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                                         enum ps_skip_worktree_action sw_action)
  26 {
  27         int num_unmatched = 0, i;
  28
  29         /*
  30          * Since we are walking the index as if we were walking the directory,
  31          * we have to mark the matched pathspec as seen; otherwise we will
  32          * mistakenly think that the user gave a pathspec that did not match
  33          * anything.
  34          */
  35         for (i = 0; i < pathspec->nr; i++)
  36                 if (!seen[i])
  37                         num_unmatched++;
  38         if (!num_unmatched)
  39                 return;
  40         /* TODO: audit for interaction with sparse-index. */
  41         ensure_full_index(istate);
  42         for (i = 0; i < istate->cache_nr; i++) {
  43                 const struct cache_entry *ce = istate->cache[i];
  44                 if (sw_action == PS_IGNORE_SKIP_WORKTREE && ce_skip_worktree(ce))
  45                         continue;
  46                 ce_path_match(istate, ce, pathspec, seen);
  47         }
  48 }
  49
  50 /*
  51  * Finds which of the given pathspecs match items in the index.
  52  *
  53  * This is a one-shot wrapper around add_pathspec_matches_against_index()
  54  * which allocates, populates, and returns a seen[] array indicating the
  55  * nature of the "closest" (i.e. most specific) matches which each of the
  56  * given pathspecs achieves against all items in the index.
  57  */
  58 char *find_pathspecs_matching_against_index(const struct pathspec *pathspec,
  59                                             struct index_state *istate,
  60                                             enum ps_skip_worktree_action sw_action)
  61 {
  62         char *seen = xcalloc(pathspec->nr, 1);
  63         add_pathspec_matches_against_index(pathspec, istate, seen, sw_action);
  64         return seen;
  65 }
  66
  67 char *find_pathspecs_matching_skip_worktree(const struct pathspec *pathspec)
  68 {
  69         struct index_state *istate = the_repository->index;
  70         char *seen = xcalloc(pathspec->nr, 1);
  71         int i;
  72
  73         for (i = 0; i < istate->cache_nr; i++) {
  74                 struct cache_entry *ce = istate->cache[i];
  75                 if (ce_skip_worktree(ce))
  76                     ce_path_match(istate, ce, pathspec, seen);
  77         }
  78
  79         return seen;
  80 }
  81
  82 /*
  83  * Magic pathspec
  84  *
  85  * Possible future magic semantics include stuff like:
  86  *
  87  *      { PATHSPEC_RECURSIVE, '*', "recursive" },
  88  *      { PATHSPEC_REGEXP, '\0', "regexp" },
  89  *
  90  */
  91
  92 static struct pathspec_magic {
  93         unsigned bit;
  94         char mnemonic; /* this cannot be ':'! */
  95         const char *name;
  96 } pathspec_magic[] = {
  97         { PATHSPEC_FROMTOP,  '/', "top" },
  98         { PATHSPEC_LITERAL, '\0', "literal" },
  99         { PATHSPEC_GLOB,    '\0', "glob" },
 100         { PATHSPEC_ICASE,   '\0', "icase" },
 101         { PATHSPEC_EXCLUDE,  '!', "exclude" },
 102         { PATHSPEC_ATTR,    '\0', "attr" },
 103 };
 104
 105 static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
 106 {
 107         int i;
 108         strbuf_addstr(sb, ":(");
 109         for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
 110                 if (magic & pathspec_magic[i].bit) {
 111                         if (sb->buf[sb->len - 1] != '(')
 112                                 strbuf_addch(sb, ',');
 113                         strbuf_addstr(sb, pathspec_magic[i].name);
 114                 }
 115         strbuf_addf(sb, ",prefix:%d)", prefixlen);
 116 }
 117
 118 static size_t strcspn_escaped(const char *s, const char *stop)
 119 {
 120         const char *i;
 121
 122         for (i = s; *i; i++) {
 123                 /* skip the escaped character */
 124                 if (i[0] == '\\' && i[1]) {
 125                         i++;
 126                         continue;
 127                 }
 128
 129                 if (strchr(stop, *i))
 130                         break;
 131         }
 132         return i - s;
 133 }
 134
 135 static inline int invalid_value_char(const char ch)
 136 {
 137         if (isalnum(ch) || strchr(",-_", ch))
 138                 return 0;
 139         return -1;
 140 }
 141
 142 static char *attr_value_unescape(const char *value)
 143 {
 144         const char *src;
 145         char *dst, *ret;
 146
 147         ret = xmallocz(strlen(value));
 148         for (src = value, dst = ret; *src; src++, dst++) {
 149                 if (*src == '\\') {
 150                         if (!src[1])
 151                                 die(_("Escape character '\\' not allowed as "
 152                                       "last character in attr value"));
 153                         src++;
 154                 }
 155                 if (invalid_value_char(*src))
 156                         die("cannot use '%c' for value matching", *src);
 157                 *dst = *src;
 158         }
 159         *dst = '\0';
 160         return ret;
 161 }
 162
 163 static void parse_pathspec_attr_match(struct pathspec_item *item, const char *value)
 164 {
 165         struct string_list_item *si;
 166         struct string_list list = STRING_LIST_INIT_DUP;
 167
 168         if (item->attr_check || item->attr_match)
 169                 die(_("Only one 'attr:' specification is allowed."));
 170
 171         if (!value || !*value)
 172                 die(_("attr spec must not be empty"));
 173
 174         string_list_split(&list, value, ' ', -1);
 175         string_list_remove_empty_items(&list, 0);
 176
 177         item->attr_check = attr_check_alloc();
 178         CALLOC_ARRAY(item->attr_match, list.nr);
 179
 180         for_each_string_list_item(si, &list) {
 181                 size_t attr_len;
 182                 char *attr_name;
 183                 const struct git_attr *a;
 184
 185                 int j = item->attr_match_nr++;
 186                 const char *attr = si->string;
 187                 struct attr_match *am = &item->attr_match[j];
 188
 189                 switch (*attr) {
 190                 case '!':
 191                         am->match_mode = MATCH_UNSPECIFIED;
 192                         attr++;
 193                         attr_len = strlen(attr);
 194                         break;
 195                 case '-':
 196                         am->match_mode = MATCH_UNSET;
 197                         attr++;
 198                         attr_len = strlen(attr);
 199                         break;
 200                 default:
 201                         attr_len = strcspn(attr, "=");
 202                         if (attr[attr_len] != '=')
 203                                 am->match_mode = MATCH_SET;
 204                         else {
 205                                 const char *v = &attr[attr_len + 1];
 206                                 am->match_mode = MATCH_VALUE;
 207                                 am->value = attr_value_unescape(v);
 208                         }
 209                         break;
 210                 }
 211
 212                 attr_name = xmemdupz(attr, attr_len);
 213                 a = git_attr(attr_name);
 214                 if (!a)
 215                         die(_("invalid attribute name %s"), attr_name);
 216
 217                 attr_check_append(item->attr_check, a);
 218
 219                 free(attr_name);
 220         }
 221
 222         if (item->attr_check->nr != item->attr_match_nr)
 223                 BUG("should have same number of entries");
 224
 225         string_list_clear(&list, 0);
 226 }
 227
 228 static inline int get_literal_global(void)
 229 {
 230         static int literal = -1;
 231
 232         if (literal < 0)
 233                 literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
 234
 235         return literal;
 236 }
 237
 238 static inline int get_glob_global(void)
 239 {
 240         static int glob = -1;
 241
 242         if (glob < 0)
 243                 glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
 244
 245         return glob;
 246 }
 247
 248 static inline int get_noglob_global(void)
 249 {
 250         static int noglob = -1;
 251
 252         if (noglob < 0)
 253                 noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
 254
 255         return noglob;
 256 }
 257
 258 static inline int get_icase_global(void)
 259 {
 260         static int icase = -1;
 261
 262         if (icase < 0)
 263                 icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
 264
 265         return icase;
 266 }
 267
 268 static int get_global_magic(int element_magic)
 269 {
 270         int global_magic = 0;
 271
 272         if (get_literal_global())
 273                 global_magic |= PATHSPEC_LITERAL;
 274
 275         /* --glob-pathspec is overridden by :(literal) */
 276         if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
 277                 global_magic |= PATHSPEC_GLOB;
 278
 279         if (get_glob_global() && get_noglob_global())
 280                 die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
 281
 282         if (get_icase_global())
 283                 global_magic |= PATHSPEC_ICASE;
 284
 285         if ((global_magic & PATHSPEC_LITERAL) &&
 286             (global_magic & ~PATHSPEC_LITERAL))
 287                 die(_("global 'literal' pathspec setting is incompatible "
 288                       "with all other global pathspec settings"));
 289
 290         /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
 291         if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
 292                 global_magic |= PATHSPEC_LITERAL;
 293
 294         return global_magic;
 295 }
 296
 297 /*
 298  * Parse the pathspec element looking for long magic
 299  *
 300  * saves all magic in 'magic'
 301  * if prefix magic is used, save the prefix length in 'prefix_len'
 302  * returns the position in 'elem' after all magic has been parsed
 303  */
 304 static const char *parse_long_magic(unsigned *magic, int *prefix_len,
 305                                     struct pathspec_item *item,
 306                                     const char *elem)
 307 {
 308         const char *pos;
 309         const char *nextat;
 310
 311         for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
 312                 size_t len = strcspn_escaped(pos, ",)");
 313                 int i;
 314
 315                 if (pos[len] == ',')
 316                         nextat = pos + len + 1; /* handle ',' */
 317                 else
 318                         nextat = pos + len; /* handle ')' and '\0' */
 319
 320                 if (!len)
 321                         continue;
 322
 323                 if (starts_with(pos, "prefix:")) {
 324                         char *endptr;
 325                         *prefix_len = strtol(pos + 7, &endptr, 10);
 326                         if (endptr - pos != len)
 327                                 die(_("invalid parameter for pathspec magic 'prefix'"));
 328                         continue;
 329                 }
 330
 331                 if (starts_with(pos, "attr:")) {
 332                         char *attr_body = xmemdupz(pos + 5, len - 5);
 333                         parse_pathspec_attr_match(item, attr_body);
 334                         *magic |= PATHSPEC_ATTR;
 335                         free(attr_body);
 336                         continue;
 337                 }
 338
 339                 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 340                         if (strlen(pathspec_magic[i].name) == len &&
 341                             !strncmp(pathspec_magic[i].name, pos, len)) {
 342                                 *magic |= pathspec_magic[i].bit;
 343                                 break;
 344                         }
 345                 }
 346
 347                 if (ARRAY_SIZE(pathspec_magic) <= i)
 348                         die(_("Invalid pathspec magic '%.*s' in '%s'"),
 349                             (int) len, pos, elem);
 350         }
 351
 352         if (*pos != ')')
 353                 die(_("Missing ')' at the end of pathspec magic in '%s'"),
 354                     elem);
 355         pos++;
 356
 357         return pos;
 358 }
 359
 360 /*
 361  * Parse the pathspec element looking for short magic
 362  *
 363  * saves all magic in 'magic'
 364  * returns the position in 'elem' after all magic has been parsed
 365  */
 366 static const char *parse_short_magic(unsigned *magic, const char *elem)
 367 {
 368         const char *pos;
 369
 370         for (pos = elem + 1; *pos && *pos != ':'; pos++) {
 371                 char ch = *pos;
 372                 int i;
 373
 374                 /* Special case alias for '!' */
 375                 if (ch == '^') {
 376                         *magic |= PATHSPEC_EXCLUDE;
 377                         continue;
 378                 }
 379
 380                 if (!is_pathspec_magic(ch))
 381                         break;
 382
 383                 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 384                         if (pathspec_magic[i].mnemonic == ch) {
 385                                 *magic |= pathspec_magic[i].bit;
 386                                 break;
 387                         }
 388                 }
 389
 390                 if (ARRAY_SIZE(pathspec_magic) <= i)
 391                         die(_("Unimplemented pathspec magic '%c' in '%s'"),
 392                             ch, elem);
 393         }
 394
 395         if (*pos == ':')
 396                 pos++;
 397
 398         return pos;
 399 }
 400
 401 static const char *parse_element_magic(unsigned *magic, int *prefix_len,
 402                                        struct pathspec_item *item,
 403                                        const char *elem)
 404 {
 405         if (elem[0] != ':' || get_literal_global())
 406                 return elem; /* nothing to do */
 407         else if (elem[1] == '(')
 408                 /* longhand */
 409                 return parse_long_magic(magic, prefix_len, item, elem);
 410         else
 411                 /* shorthand */
 412                 return parse_short_magic(magic, elem);
 413 }
 414
 415 /*
 416  * Perform the initialization of a pathspec_item based on a pathspec element.
 417  */
 418 static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
 419                                const char *prefix, int prefixlen,
 420                                const char *elt)
 421 {
 422         unsigned magic = 0, element_magic = 0;
 423         const char *copyfrom = elt;
 424         char *match;
 425         int pathspec_prefix = -1;
 426
 427         item->attr_check = NULL;
 428         item->attr_match = NULL;
 429         item->attr_match_nr = 0;
 430
 431         /* PATHSPEC_LITERAL_PATH ignores magic */
 432         if (flags & PATHSPEC_LITERAL_PATH) {
 433                 magic = PATHSPEC_LITERAL;
 434         } else {
 435                 copyfrom = parse_element_magic(&element_magic,
 436                                                &pathspec_prefix,
 437                                                item,
 438                                                elt);
 439                 magic |= element_magic;
 440                 magic |= get_global_magic(element_magic);
 441         }
 442
 443         item->magic = magic;
 444
 445         if (pathspec_prefix >= 0 &&
 446             (prefixlen || (prefix && *prefix)))
 447                 BUG("'prefix' magic is supposed to be used at worktree's root");
 448
 449         if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
 450                 die(_("%s: 'literal' and 'glob' are incompatible"), elt);
 451
 452         /* Create match string which will be used for pathspec matching */
 453         if (pathspec_prefix >= 0) {
 454                 match = xstrdup(copyfrom);
 455                 prefixlen = pathspec_prefix;
 456         } else if (magic & PATHSPEC_FROMTOP) {
 457                 match = xstrdup(copyfrom);
 458                 prefixlen = 0;
 459         } else {
 460                 match = prefix_path_gently(prefix, prefixlen,
 461                                            &prefixlen, copyfrom);
 462                 if (!match) {
 463                         const char *hint_path = get_git_work_tree();
 464                         if (!hint_path)
 465                                 hint_path = get_git_dir();
 466                         die(_("%s: '%s' is outside repository at '%s'"), elt,
 467                             copyfrom, absolute_path(hint_path));
 468                 }
 469         }
 470
 471         item->match = match;
 472         item->len = strlen(item->match);
 473         item->prefix = prefixlen;
 474
 475         /*
 476          * Prefix the pathspec (keep all magic) and assign to
 477          * original. Useful for passing to another command.
 478          */
 479         if ((flags & PATHSPEC_PREFIX_ORIGIN) &&
 480             !get_literal_global()) {
 481                 struct strbuf sb = STRBUF_INIT;
 482
 483                 /* Preserve the actual prefix length of each pattern */
 484                 prefix_magic(&sb, prefixlen, element_magic);
 485
 486                 strbuf_addstr(&sb, match);
 487                 item->original = strbuf_detach(&sb, NULL);
 488         } else {
 489                 item->original = xstrdup(elt);
 490         }
 491
 492         if (magic & PATHSPEC_LITERAL) {
 493                 item->nowildcard_len = item->len;
 494         } else {
 495                 item->nowildcard_len = simple_length(item->match);
 496                 if (item->nowildcard_len < prefixlen)
 497                         item->nowildcard_len = prefixlen;
 498         }
 499
 500         item->flags = 0;
 501         if (magic & PATHSPEC_GLOB) {
 502                 /*
 503                  * FIXME: should we enable ONESTAR in _GLOB for
 504                  * pattern "* * / * . c"?
 505                  */
 506         } else {
 507                 if (item->nowildcard_len < item->len &&
 508                     item->match[item->nowildcard_len] == '*' &&
 509                     no_wildcard(item->match + item->nowildcard_len + 1))
 510                         item->flags |= PATHSPEC_ONESTAR;
 511         }
 512
 513         /* sanity checks, pathspec matchers assume these are sane */
 514         if (item->nowildcard_len > item->len ||
 515             item->prefix         > item->len) {
 516                 BUG("error initializing pathspec_item");
 517         }
 518 }
 519
 520 static int pathspec_item_cmp(const void *a_, const void *b_)
 521 {
 522         struct pathspec_item *a, *b;
 523
 524         a = (struct pathspec_item *)a_;
 525         b = (struct pathspec_item *)b_;
 526         return strcmp(a->match, b->match);
 527 }
 528
 529 static void NORETURN unsupported_magic(const char *pattern,
 530                                        unsigned magic)
 531 {
 532         struct strbuf sb = STRBUF_INIT;
 533         int i;
 534         for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
 535                 const struct pathspec_magic *m = pathspec_magic + i;
 536                 if (!(magic & m->bit))
 537                         continue;
 538                 if (sb.len)
 539                         strbuf_addstr(&sb, ", ");
 540
 541                 if (m->mnemonic)
 542                         strbuf_addf(&sb, _("'%s' (mnemonic: '%c')"),
 543                                     m->name, m->mnemonic);
 544                 else
 545                         strbuf_addf(&sb, "'%s'", m->name);
 546         }
 547         /*
 548          * We may want to substitute "this command" with a command
 549          * name. E.g. when add--interactive dies when running
 550          * "checkout -p"
 551          */
 552         die(_("%s: pathspec magic not supported by this command: %s"),
 553             pattern, sb.buf);
 554 }
 555
 556 void parse_pathspec(struct pathspec *pathspec,
 557                     unsigned magic_mask, unsigned flags,
 558                     const char *prefix, const char **argv)
 559 {
 560         struct pathspec_item *item;
 561         const char *entry = argv ? *argv : NULL;
 562         int i, n, prefixlen, nr_exclude = 0;
 563
 564         memset(pathspec, 0, sizeof(*pathspec));
 565
 566         if (flags & PATHSPEC_MAXDEPTH_VALID)
 567                 pathspec->magic |= PATHSPEC_MAXDEPTH;
 568
 569         /* No arguments, no prefix -> no pathspec */
 570         if (!entry && !prefix)
 571                 return;
 572
 573         if ((flags & PATHSPEC_PREFER_CWD) &&
 574             (flags & PATHSPEC_PREFER_FULL))
 575                 BUG("PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible");
 576
 577         /* No arguments with prefix -> prefix pathspec */
 578         if (!entry) {
 579                 if (flags & PATHSPEC_PREFER_FULL)
 580                         return;
 581
 582                 if (!(flags & PATHSPEC_PREFER_CWD))
 583                         BUG("PATHSPEC_PREFER_CWD requires arguments");
 584
 585                 pathspec->items = CALLOC_ARRAY(item, 1);
 586                 item->match = xstrdup(prefix);
 587                 item->original = xstrdup(prefix);
 588                 item->nowildcard_len = item->len = strlen(prefix);
 589                 item->prefix = item->len;
 590                 pathspec->nr = 1;
 591                 return;
 592         }
 593
 594         n = 0;
 595         while (argv[n]) {
 596                 if (*argv[n] == '\0')
 597                         die("empty string is not a valid pathspec. "
 598                                   "please use . instead if you meant to match all paths");
 599                 n++;
 600         }
 601
 602         pathspec->nr = n;
 603         ALLOC_ARRAY(pathspec->items, n + 1);
 604         item = pathspec->items;
 605         prefixlen = prefix ? strlen(prefix) : 0;
 606
 607         for (i = 0; i < n; i++) {
 608                 entry = argv[i];
 609
 610                 init_pathspec_item(item + i, flags, prefix, prefixlen, entry);
 611
 612                 if (item[i].magic & PATHSPEC_EXCLUDE)
 613                         nr_exclude++;
 614                 if (item[i].magic & magic_mask)
 615                         unsupported_magic(entry, item[i].magic & magic_mask);
 616
 617                 if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) &&
 618                     has_symlink_leading_path(item[i].match, item[i].len)) {
 619                         die(_("pathspec '%s' is beyond a symbolic link"), entry);
 620                 }
 621
 622                 if (item[i].nowildcard_len < item[i].len)
 623                         pathspec->has_wildcard = 1;
 624                 pathspec->magic |= item[i].magic;
 625         }
 626
 627         /*
 628          * If everything is an exclude pattern, add one positive pattern
 629          * that matches everything. We allocated an extra one for this.
 630          */
 631         if (nr_exclude == n) {
 632                 int plen = (!(flags & PATHSPEC_PREFER_CWD)) ? 0 : prefixlen;
 633                 init_pathspec_item(item + n, 0, prefix, plen, "");
 634                 pathspec->nr++;
 635         }
 636
 637         if (pathspec->magic & PATHSPEC_MAXDEPTH) {
 638                 if (flags & PATHSPEC_KEEP_ORDER)
 639                         BUG("PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible");
 640                 QSORT(pathspec->items, pathspec->nr, pathspec_item_cmp);
 641         }
 642 }
 643
 644 void parse_pathspec_file(struct pathspec *pathspec, unsigned magic_mask,
 645                          unsigned flags, const char *prefix,
 646                          const char *file, int nul_term_line)
 647 {
 648         struct strvec parsed_file = STRVEC_INIT;
 649         strbuf_getline_fn getline_fn = nul_term_line ? strbuf_getline_nul :
 650                                                        strbuf_getline;
 651         struct strbuf buf = STRBUF_INIT;
 652         struct strbuf unquoted = STRBUF_INIT;
 653         FILE *in;
 654
 655         if (!strcmp(file, "-"))
 656                 in = stdin;
 657         else
 658                 in = xfopen(file, "r");
 659
 660         while (getline_fn(&buf, in) != EOF) {
 661                 if (!nul_term_line && buf.buf[0] == '"') {
 662                         strbuf_reset(&unquoted);
 663                         if (unquote_c_style(&unquoted, buf.buf, NULL))
 664                                 die(_("line is badly quoted: %s"), buf.buf);
 665                         strbuf_swap(&buf, &unquoted);
 666                 }
 667                 strvec_push(&parsed_file, buf.buf);
 668                 strbuf_reset(&buf);
 669         }
 670
 671         strbuf_release(&unquoted);
 672         strbuf_release(&buf);
 673         if (in != stdin)
 674                 fclose(in);
 675
 676         parse_pathspec(pathspec, magic_mask, flags, prefix, parsed_file.v);
 677         strvec_clear(&parsed_file);
 678 }
 679
 680 void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
 681 {
 682         int i, j;
 683
 684         *dst = *src;
 685         ALLOC_ARRAY(dst->items, dst->nr);
 686         COPY_ARRAY(dst->items, src->items, dst->nr);
 687
 688         for (i = 0; i < dst->nr; i++) {
 689                 struct pathspec_item *d = &dst->items[i];
 690                 struct pathspec_item *s = &src->items[i];
 691
 692                 d->match = xstrdup(s->match);
 693                 d->original = xstrdup(s->original);
 694
 695                 ALLOC_ARRAY(d->attr_match, d->attr_match_nr);
 696                 COPY_ARRAY(d->attr_match, s->attr_match, d->attr_match_nr);
 697                 for (j = 0; j < d->attr_match_nr; j++) {
 698                         const char *value = s->attr_match[j].value;
 699                         d->attr_match[j].value = xstrdup_or_null(value);
 700                 }
 701
 702                 d->attr_check = attr_check_dup(s->attr_check);
 703         }
 704 }
 705
 706 void clear_pathspec(struct pathspec *pathspec)
 707 {
 708         int i, j;
 709
 710         for (i = 0; i < pathspec->nr; i++) {
 711                 free(pathspec->items[i].match);
 712                 free(pathspec->items[i].original);
 713
 714                 for (j = 0; j < pathspec->items[i].attr_match_nr; j++)
 715                         free(pathspec->items[i].attr_match[j].value);
 716                 free(pathspec->items[i].attr_match);
 717
 718                 if (pathspec->items[i].attr_check)
 719                         attr_check_free(pathspec->items[i].attr_check);
 720         }
 721
 722         FREE_AND_NULL(pathspec->items);
 723         pathspec->nr = 0;
 724 }
 725
 726 int match_pathspec_attrs(struct index_state *istate,
 727                          const char *name, int namelen,
 728                          const struct pathspec_item *item)
 729 {
 730         int i;
 731         char *to_free = NULL;
 732
 733         if (name[namelen])
 734                 name = to_free = xmemdupz(name, namelen);
 735
 736         git_check_attr(istate, name, item->attr_check);
 737
 738         free(to_free);
 739
 740         for (i = 0; i < item->attr_match_nr; i++) {
 741                 const char *value;
 742                 int matched;
 743                 enum attr_match_mode match_mode;
 744
 745                 value = item->attr_check->items[i].value;
 746                 match_mode = item->attr_match[i].match_mode;
 747
 748                 if (ATTR_TRUE(value))
 749                         matched = (match_mode == MATCH_SET);
 750                 else if (ATTR_FALSE(value))
 751                         matched = (match_mode == MATCH_UNSET);
 752                 else if (ATTR_UNSET(value))
 753                         matched = (match_mode == MATCH_UNSPECIFIED);
 754                 else
 755                         matched = (match_mode == MATCH_VALUE &&
 756                                    !strcmp(item->attr_match[i].value, value));
 757                 if (!matched)
 758                         return 0;
 759         }
 760
 761         return 1;
 762 }