pathspec.c

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