| 1 | #define USE_THE_REPOSITORY_VARIABLE |
| 2 | |
| 3 | #include "git-compat-util.h" |
| 4 | #include "abspath.h" |
| 5 | #include "parse.h" |
| 6 | #include "dir.h" |
| 7 | #include "environment.h" |
| 8 | #include "gettext.h" |
| 9 | #include "pathspec.h" |
| 10 | #include "attr.h" |
| 11 | #include "read-cache.h" |
| 12 | #include "repository.h" |
| 13 | #include "setup.h" |
| 14 | #include "strvec.h" |
| 15 | #include "symlinks.h" |
| 16 | #include "quote.h" |
| 17 | #include "wildmatch.h" |
| 18 | |
| 19 | /* |
| 20 | * Finds which of the given pathspecs match items in the index. |
| 21 | * |
| 22 | * For each pathspec, sets the corresponding entry in the seen[] array |
| 23 | * (which should be specs items long, i.e. the same size as pathspec) |
| 24 | * to the nature of the "closest" (i.e. most specific) match found for |
| 25 | * that pathspec in the index, if it was a closer type of match than |
| 26 | * the existing entry. As an optimization, matching is skipped |
| 27 | * altogether if seen[] already only contains non-zero entries. |
| 28 | * |
| 29 | * If seen[] has not already been written to, it may make sense |
| 30 | * to use find_pathspecs_matching_against_index() instead. |
| 31 | */ |
| 32 | void add_pathspec_matches_against_index(const struct pathspec *pathspec, |
| 33 | struct index_state *istate, |
| 34 | char *seen, |
| 35 | enum ps_skip_worktree_action sw_action) |
| 36 | { |
| 37 | int num_unmatched = 0; |
| 38 | |
| 39 | /* |
| 40 | * Since we are walking the index as if we were walking the directory, |
| 41 | * we have to mark the matched pathspec as seen; otherwise we will |
| 42 | * mistakenly think that the user gave a pathspec that did not match |
| 43 | * anything. |
| 44 | */ |
| 45 | for (int i = 0; i < pathspec->nr; i++) |
| 46 | if (!seen[i]) |
| 47 | num_unmatched++; |
| 48 | if (!num_unmatched) |
| 49 | return; |
| 50 | for (unsigned int i = 0; i < istate->cache_nr; i++) { |
| 51 | const struct cache_entry *ce = istate->cache[i]; |
| 52 | if (sw_action == PS_IGNORE_SKIP_WORKTREE && |
| 53 | (ce_skip_worktree(ce) || !path_in_sparse_checkout(ce->name, istate))) |
| 54 | continue; |
| 55 | ce_path_match(istate, ce, pathspec, seen); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /* |
| 60 | * Finds which of the given pathspecs match items in the index. |
| 61 | * |
| 62 | * This is a one-shot wrapper around add_pathspec_matches_against_index() |
| 63 | * which allocates, populates, and returns a seen[] array indicating the |
| 64 | * nature of the "closest" (i.e. most specific) matches which each of the |
| 65 | * given pathspecs achieves against all items in the index. |
| 66 | */ |
| 67 | char *find_pathspecs_matching_against_index(const struct pathspec *pathspec, |
| 68 | struct index_state *istate, |
| 69 | enum ps_skip_worktree_action sw_action) |
| 70 | { |
| 71 | char *seen = xcalloc(pathspec->nr, 1); |
| 72 | add_pathspec_matches_against_index(pathspec, istate, seen, sw_action); |
| 73 | return seen; |
| 74 | } |
| 75 | |
| 76 | char *find_pathspecs_matching_skip_worktree(const struct pathspec *pathspec) |
| 77 | { |
| 78 | struct index_state *istate = the_repository->index; |
| 79 | char *seen = xcalloc(pathspec->nr, 1); |
| 80 | unsigned int i; |
| 81 | |
| 82 | for (i = 0; i < istate->cache_nr; i++) { |
| 83 | struct cache_entry *ce = istate->cache[i]; |
| 84 | if (ce_skip_worktree(ce) || !path_in_sparse_checkout(ce->name, istate)) |
| 85 | ce_path_match(istate, ce, pathspec, seen); |
| 86 | } |
| 87 | |
| 88 | return seen; |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Magic pathspec |
| 93 | * |
| 94 | * Possible future magic semantics include stuff like: |
| 95 | * |
| 96 | * { PATHSPEC_RECURSIVE, '*', "recursive" }, |
| 97 | * { PATHSPEC_REGEXP, '\0', "regexp" }, |
| 98 | * |
| 99 | */ |
| 100 | |
| 101 | static struct pathspec_magic { |
| 102 | unsigned bit; |
| 103 | char mnemonic; /* this cannot be ':'! */ |
| 104 | const char *name; |
| 105 | } pathspec_magic[] = { |
| 106 | { PATHSPEC_FROMTOP, '/', "top" }, |
| 107 | { PATHSPEC_LITERAL, '\0', "literal" }, |
| 108 | { PATHSPEC_GLOB, '\0', "glob" }, |
| 109 | { PATHSPEC_ICASE, '\0', "icase" }, |
| 110 | { PATHSPEC_EXCLUDE, '!', "exclude" }, |
| 111 | { PATHSPEC_ATTR, '\0', "attr" }, |
| 112 | }; |
| 113 | |
| 114 | static void prefix_magic(struct strbuf *sb, int prefixlen, |
| 115 | unsigned magic, const char *element) |
| 116 | { |
| 117 | /* No magic was found in element, just add prefix magic */ |
| 118 | if (!magic) { |
| 119 | strbuf_addf(sb, ":(prefix:%d)", prefixlen); |
| 120 | return; |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | * At this point, we know that parse_element_magic() was able |
| 125 | * to extract some pathspec magic from element. So we know |
| 126 | * element is correctly formatted in either shorthand or |
| 127 | * longhand form |
| 128 | */ |
| 129 | if (element[1] != '(') { |
| 130 | /* Process an element in shorthand form (e.g. ":!/<match>") */ |
| 131 | strbuf_addstr(sb, ":("); |
| 132 | for (unsigned int i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { |
| 133 | if ((magic & pathspec_magic[i].bit) && |
| 134 | pathspec_magic[i].mnemonic) { |
| 135 | if (sb->buf[sb->len - 1] != '(') |
| 136 | strbuf_addch(sb, ','); |
| 137 | strbuf_addstr(sb, pathspec_magic[i].name); |
| 138 | } |
| 139 | } |
| 140 | } else { |
| 141 | /* For the longhand form, we copy everything up to the final ')' */ |
| 142 | size_t len = strchr(element, ')') - element; |
| 143 | strbuf_add(sb, element, len); |
| 144 | } |
| 145 | strbuf_addf(sb, ",prefix:%d)", prefixlen); |
| 146 | } |
| 147 | |
| 148 | static size_t strcspn_escaped(const char *s, const char *stop) |
| 149 | { |
| 150 | const char *i; |
| 151 | |
| 152 | for (i = s; *i; i++) { |
| 153 | /* skip the escaped character */ |
| 154 | if (i[0] == '\\' && i[1]) { |
| 155 | i++; |
| 156 | continue; |
| 157 | } |
| 158 | |
| 159 | if (strchr(stop, *i)) |
| 160 | break; |
| 161 | } |
| 162 | return i - s; |
| 163 | } |
| 164 | |
| 165 | static inline int invalid_value_char(const char ch) |
| 166 | { |
| 167 | if (isalnum(ch) || strchr(",-_", ch)) |
| 168 | return 0; |
| 169 | return -1; |
| 170 | } |
| 171 | |
| 172 | static char *attr_value_unescape(const char *value) |
| 173 | { |
| 174 | const char *src; |
| 175 | char *dst, *ret; |
| 176 | |
| 177 | ret = xmallocz(strlen(value)); |
| 178 | for (src = value, dst = ret; *src; src++, dst++) { |
| 179 | if (*src == '\\') { |
| 180 | if (!src[1]) |
| 181 | die(_("Escape character '\\' not allowed as " |
| 182 | "last character in attr value")); |
| 183 | src++; |
| 184 | } |
| 185 | if (invalid_value_char(*src)) |
| 186 | die("cannot use '%c' for value matching", *src); |
| 187 | *dst = *src; |
| 188 | } |
| 189 | *dst = '\0'; |
| 190 | return ret; |
| 191 | } |
| 192 | |
| 193 | static void parse_pathspec_attr_match(struct pathspec_item *item, const char *value) |
| 194 | { |
| 195 | struct string_list_item *si; |
| 196 | struct string_list list = STRING_LIST_INIT_DUP; |
| 197 | |
| 198 | if (item->attr_check || item->attr_match) |
| 199 | die(_("Only one 'attr:' specification is allowed.")); |
| 200 | |
| 201 | if (!value || !*value) |
| 202 | die(_("attr spec must not be empty")); |
| 203 | |
| 204 | string_list_split_f(&list, value, " ", -1, STRING_LIST_SPLIT_NONEMPTY); |
| 205 | |
| 206 | item->attr_check = attr_check_alloc(); |
| 207 | CALLOC_ARRAY(item->attr_match, list.nr); |
| 208 | |
| 209 | for_each_string_list_item(si, &list) { |
| 210 | size_t attr_len; |
| 211 | char *attr_name; |
| 212 | const struct git_attr *a; |
| 213 | |
| 214 | int j = item->attr_match_nr++; |
| 215 | const char *attr = si->string; |
| 216 | struct attr_match *am = &item->attr_match[j]; |
| 217 | |
| 218 | switch (*attr) { |
| 219 | case '!': |
| 220 | am->match_mode = MATCH_UNSPECIFIED; |
| 221 | attr++; |
| 222 | attr_len = strlen(attr); |
| 223 | break; |
| 224 | case '-': |
| 225 | am->match_mode = MATCH_UNSET; |
| 226 | attr++; |
| 227 | attr_len = strlen(attr); |
| 228 | break; |
| 229 | default: |
| 230 | attr_len = strcspn(attr, "="); |
| 231 | if (attr[attr_len] != '=') |
| 232 | am->match_mode = MATCH_SET; |
| 233 | else { |
| 234 | const char *v = &attr[attr_len + 1]; |
| 235 | am->match_mode = MATCH_VALUE; |
| 236 | am->value = attr_value_unescape(v); |
| 237 | } |
| 238 | break; |
| 239 | } |
| 240 | |
| 241 | attr_name = xmemdupz(attr, attr_len); |
| 242 | a = git_attr(attr_name); |
| 243 | if (!a) |
| 244 | die(_("invalid attribute name %s"), attr_name); |
| 245 | |
| 246 | attr_check_append(item->attr_check, a); |
| 247 | |
| 248 | free(attr_name); |
| 249 | } |
| 250 | |
| 251 | if (item->attr_check->nr != item->attr_match_nr) |
| 252 | BUG("should have same number of entries"); |
| 253 | |
| 254 | string_list_clear(&list, 0); |
| 255 | } |
| 256 | |
| 257 | static inline int get_literal_global(void) |
| 258 | { |
| 259 | static int literal = -1; |
| 260 | |
| 261 | if (literal < 0) |
| 262 | literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0); |
| 263 | |
| 264 | return literal; |
| 265 | } |
| 266 | |
| 267 | static inline int get_glob_global(void) |
| 268 | { |
| 269 | static int glob = -1; |
| 270 | |
| 271 | if (glob < 0) |
| 272 | glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0); |
| 273 | |
| 274 | return glob; |
| 275 | } |
| 276 | |
| 277 | static inline int get_noglob_global(void) |
| 278 | { |
| 279 | static int noglob = -1; |
| 280 | |
| 281 | if (noglob < 0) |
| 282 | noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0); |
| 283 | |
| 284 | return noglob; |
| 285 | } |
| 286 | |
| 287 | static inline int get_icase_global(void) |
| 288 | { |
| 289 | static int icase = -1; |
| 290 | |
| 291 | if (icase < 0) |
| 292 | icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0); |
| 293 | |
| 294 | return icase; |
| 295 | } |
| 296 | |
| 297 | static int get_global_magic(int element_magic) |
| 298 | { |
| 299 | int global_magic = 0; |
| 300 | |
| 301 | if (get_literal_global()) |
| 302 | global_magic |= PATHSPEC_LITERAL; |
| 303 | |
| 304 | /* --glob-pathspec is overridden by :(literal) */ |
| 305 | if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL)) |
| 306 | global_magic |= PATHSPEC_GLOB; |
| 307 | |
| 308 | if (get_glob_global() && get_noglob_global()) |
| 309 | die(_("global 'glob' and 'noglob' pathspec settings are incompatible")); |
| 310 | |
| 311 | if (get_icase_global()) |
| 312 | global_magic |= PATHSPEC_ICASE; |
| 313 | |
| 314 | if ((global_magic & PATHSPEC_LITERAL) && |
| 315 | (global_magic & ~PATHSPEC_LITERAL)) |
| 316 | die(_("global 'literal' pathspec setting is incompatible " |
| 317 | "with all other global pathspec settings")); |
| 318 | |
| 319 | /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */ |
| 320 | if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB)) |
| 321 | global_magic |= PATHSPEC_LITERAL; |
| 322 | |
| 323 | return global_magic; |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Parse the pathspec element looking for long magic |
| 328 | * |
| 329 | * saves all magic in 'magic' |
| 330 | * if prefix magic is used, save the prefix length in 'prefix_len' |
| 331 | * returns the position in 'elem' after all magic has been parsed |
| 332 | */ |
| 333 | static const char *parse_long_magic(unsigned *magic, int *prefix_len, |
| 334 | struct pathspec_item *item, |
| 335 | const char *elem) |
| 336 | { |
| 337 | const char *pos; |
| 338 | const char *nextat; |
| 339 | |
| 340 | for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) { |
| 341 | size_t len = strcspn_escaped(pos, ",)"); |
| 342 | unsigned int i; |
| 343 | |
| 344 | if (pos[len] == ',') |
| 345 | nextat = pos + len + 1; /* handle ',' */ |
| 346 | else |
| 347 | nextat = pos + len; /* handle ')' and '\0' */ |
| 348 | |
| 349 | if (!len) |
| 350 | continue; |
| 351 | |
| 352 | if (starts_with(pos, "prefix:")) { |
| 353 | char *endptr; |
| 354 | *prefix_len = strtol(pos + 7, &endptr, 10); |
| 355 | if ((size_t)(endptr - pos) != len) |
| 356 | die(_("invalid parameter for pathspec magic 'prefix'")); |
| 357 | continue; |
| 358 | } |
| 359 | |
| 360 | if (starts_with(pos, "attr:")) { |
| 361 | char *attr_body = xmemdupz(pos + 5, len - 5); |
| 362 | parse_pathspec_attr_match(item, attr_body); |
| 363 | *magic |= PATHSPEC_ATTR; |
| 364 | free(attr_body); |
| 365 | continue; |
| 366 | } |
| 367 | |
| 368 | for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { |
| 369 | if (strlen(pathspec_magic[i].name) == len && |
| 370 | !strncmp(pathspec_magic[i].name, pos, len)) { |
| 371 | *magic |= pathspec_magic[i].bit; |
| 372 | break; |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | if (ARRAY_SIZE(pathspec_magic) <= i) |
| 377 | die(_("Invalid pathspec magic '%.*s' in '%s'"), |
| 378 | (int) len, pos, elem); |
| 379 | } |
| 380 | |
| 381 | if (*pos != ')') |
| 382 | die(_("Missing ')' at the end of pathspec magic in '%s'"), |
| 383 | elem); |
| 384 | pos++; |
| 385 | |
| 386 | return pos; |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Parse the pathspec element looking for short magic |
| 391 | * |
| 392 | * saves all magic in 'magic' |
| 393 | * returns the position in 'elem' after all magic has been parsed |
| 394 | */ |
| 395 | static const char *parse_short_magic(unsigned *magic, const char *elem) |
| 396 | { |
| 397 | const char *pos; |
| 398 | |
| 399 | for (pos = elem + 1; *pos && *pos != ':'; pos++) { |
| 400 | char ch = *pos; |
| 401 | unsigned int i; |
| 402 | |
| 403 | /* Special case alias for '!' */ |
| 404 | if (ch == '^') { |
| 405 | *magic |= PATHSPEC_EXCLUDE; |
| 406 | continue; |
| 407 | } |
| 408 | |
| 409 | if (!is_pathspec_magic(ch)) |
| 410 | break; |
| 411 | |
| 412 | for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { |
| 413 | if (pathspec_magic[i].mnemonic == ch) { |
| 414 | *magic |= pathspec_magic[i].bit; |
| 415 | break; |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | if (ARRAY_SIZE(pathspec_magic) <= i) |
| 420 | die(_("Unimplemented pathspec magic '%c' in '%s'"), |
| 421 | ch, elem); |
| 422 | } |
| 423 | |
| 424 | if (*pos == ':') |
| 425 | pos++; |
| 426 | |
| 427 | return pos; |
| 428 | } |
| 429 | |
| 430 | static const char *parse_element_magic(unsigned *magic, int *prefix_len, |
| 431 | struct pathspec_item *item, |
| 432 | const char *elem) |
| 433 | { |
| 434 | if (elem[0] != ':' || get_literal_global()) |
| 435 | return elem; /* nothing to do */ |
| 436 | else if (elem[1] == '(') |
| 437 | /* longhand */ |
| 438 | return parse_long_magic(magic, prefix_len, item, elem); |
| 439 | else |
| 440 | /* shorthand */ |
| 441 | return parse_short_magic(magic, elem); |
| 442 | } |
| 443 | |
| 444 | /* |
| 445 | * Perform the initialization of a pathspec_item based on a pathspec element. |
| 446 | */ |
| 447 | static void init_pathspec_item(struct pathspec_item *item, unsigned flags, |
| 448 | const char *prefix, int prefixlen, |
| 449 | const char *elt) |
| 450 | { |
| 451 | unsigned magic = 0, element_magic = 0; |
| 452 | const char *copyfrom = elt; |
| 453 | char *match; |
| 454 | int pathspec_prefix = -1; |
| 455 | |
| 456 | item->attr_check = NULL; |
| 457 | item->attr_match = NULL; |
| 458 | item->attr_match_nr = 0; |
| 459 | |
| 460 | /* PATHSPEC_LITERAL_PATH ignores magic */ |
| 461 | if (flags & PATHSPEC_LITERAL_PATH) { |
| 462 | magic = PATHSPEC_LITERAL; |
| 463 | } else { |
| 464 | copyfrom = parse_element_magic(&element_magic, |
| 465 | &pathspec_prefix, |
| 466 | item, |
| 467 | elt); |
| 468 | magic |= element_magic; |
| 469 | magic |= get_global_magic(element_magic); |
| 470 | } |
| 471 | |
| 472 | item->magic = magic; |
| 473 | |
| 474 | if (pathspec_prefix >= 0 && |
| 475 | (prefixlen || (prefix && *prefix))) |
| 476 | BUG("'prefix' magic is supposed to be used at worktree's root"); |
| 477 | |
| 478 | if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB)) |
| 479 | die(_("%s: 'literal' and 'glob' are incompatible"), elt); |
| 480 | |
| 481 | /* Create match string which will be used for pathspec matching */ |
| 482 | if (pathspec_prefix >= 0) { |
| 483 | match = xstrdup(copyfrom); |
| 484 | prefixlen = pathspec_prefix; |
| 485 | } else if (magic & PATHSPEC_FROMTOP) { |
| 486 | match = xstrdup(copyfrom); |
| 487 | prefixlen = 0; |
| 488 | } else { |
| 489 | match = prefix_path_gently(the_repository, prefix, prefixlen, |
| 490 | &prefixlen, copyfrom); |
| 491 | if (!match) { |
| 492 | const char *hint_path; |
| 493 | |
| 494 | if ((flags & PATHSPEC_NO_REPOSITORY) || !have_git_dir()) |
| 495 | die(_("'%s' is outside the directory tree"), |
| 496 | copyfrom); |
| 497 | hint_path = repo_get_work_tree(the_repository); |
| 498 | if (!hint_path) |
| 499 | hint_path = repo_get_git_dir(the_repository); |
| 500 | die(_("%s: '%s' is outside repository at '%s'"), elt, |
| 501 | copyfrom, absolute_path(hint_path)); |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | item->match = match; |
| 506 | item->len = strlen(item->match); |
| 507 | item->prefix = prefixlen; |
| 508 | |
| 509 | /* |
| 510 | * Prefix the pathspec (keep all magic) and assign to |
| 511 | * original. Useful for passing to another command. |
| 512 | */ |
| 513 | if ((flags & PATHSPEC_PREFIX_ORIGIN) && |
| 514 | !get_literal_global()) { |
| 515 | struct strbuf sb = STRBUF_INIT; |
| 516 | |
| 517 | /* Preserve the actual prefix length of each pattern */ |
| 518 | prefix_magic(&sb, prefixlen, element_magic, elt); |
| 519 | |
| 520 | strbuf_addstr(&sb, match); |
| 521 | item->original = strbuf_detach(&sb, NULL); |
| 522 | } else { |
| 523 | item->original = xstrdup(elt); |
| 524 | } |
| 525 | |
| 526 | if (magic & PATHSPEC_LITERAL) { |
| 527 | item->nowildcard_len = item->len; |
| 528 | } else { |
| 529 | item->nowildcard_len = simple_length(item->match); |
| 530 | if (item->nowildcard_len < prefixlen) |
| 531 | item->nowildcard_len = prefixlen; |
| 532 | } |
| 533 | |
| 534 | item->flags = 0; |
| 535 | if (magic & PATHSPEC_GLOB) { |
| 536 | /* |
| 537 | * FIXME: should we enable ONESTAR in _GLOB for |
| 538 | * pattern "* * / * . c"? |
| 539 | */ |
| 540 | } else { |
| 541 | if (item->nowildcard_len < item->len && |
| 542 | item->match[item->nowildcard_len] == '*' && |
| 543 | no_wildcard(item->match + item->nowildcard_len + 1)) |
| 544 | item->flags |= PATHSPEC_ONESTAR; |
| 545 | } |
| 546 | |
| 547 | /* sanity checks, pathspec matchers assume these are sane */ |
| 548 | if (item->nowildcard_len > item->len || |
| 549 | item->prefix > item->len) { |
| 550 | BUG("error initializing pathspec_item"); |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | static int pathspec_item_cmp(const void *a_, const void *b_) |
| 555 | { |
| 556 | struct pathspec_item *a, *b; |
| 557 | |
| 558 | a = (struct pathspec_item *)a_; |
| 559 | b = (struct pathspec_item *)b_; |
| 560 | return strcmp(a->match, b->match); |
| 561 | } |
| 562 | |
| 563 | void pathspec_magic_names(unsigned magic, struct strbuf *out) |
| 564 | { |
| 565 | unsigned int i; |
| 566 | for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { |
| 567 | const struct pathspec_magic *m = pathspec_magic + i; |
| 568 | if (!(magic & m->bit)) |
| 569 | continue; |
| 570 | if (out->len) |
| 571 | strbuf_addstr(out, ", "); |
| 572 | |
| 573 | if (m->mnemonic) |
| 574 | strbuf_addf(out, _("'%s' (mnemonic: '%c')"), |
| 575 | m->name, m->mnemonic); |
| 576 | else |
| 577 | strbuf_addf(out, "'%s'", m->name); |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | static void NORETURN unsupported_magic(const char *pattern, |
| 582 | unsigned magic) |
| 583 | { |
| 584 | struct strbuf sb = STRBUF_INIT; |
| 585 | pathspec_magic_names(magic, &sb); |
| 586 | /* |
| 587 | * We may want to substitute "this command" with a command |
| 588 | * name. E.g. when "git add -p" or "git add -i" dies when running |
| 589 | * "checkout -p" |
| 590 | */ |
| 591 | die(_("%s: pathspec magic not supported by this command: %s"), |
| 592 | pattern, sb.buf); |
| 593 | } |
| 594 | |
| 595 | void parse_pathspec(struct pathspec *pathspec, |
| 596 | unsigned magic_mask, unsigned flags, |
| 597 | const char *prefix, const char **argv) |
| 598 | { |
| 599 | struct pathspec_item *item; |
| 600 | const char *entry = argv ? *argv : NULL; |
| 601 | int i, n, prefixlen, nr_exclude = 0; |
| 602 | |
| 603 | memset(pathspec, 0, sizeof(*pathspec)); |
| 604 | |
| 605 | if (flags & PATHSPEC_MAXDEPTH_VALID) |
| 606 | pathspec->magic |= PATHSPEC_MAXDEPTH; |
| 607 | |
| 608 | /* No arguments, no prefix -> no pathspec */ |
| 609 | if (!entry && !prefix) |
| 610 | return; |
| 611 | |
| 612 | if ((flags & PATHSPEC_PREFER_CWD) && |
| 613 | (flags & PATHSPEC_PREFER_FULL)) |
| 614 | BUG("PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible"); |
| 615 | |
| 616 | if ((flags & PATHSPEC_NO_REPOSITORY) && |
| 617 | (~magic_mask & (PATHSPEC_ATTR | PATHSPEC_FROMTOP))) |
| 618 | BUG("PATHSPEC_NO_REPOSITORY is incompatible with PATHSPEC_ATTR and PATHSPEC_FROMTOP"); |
| 619 | |
| 620 | /* No arguments with prefix -> prefix pathspec */ |
| 621 | if (!entry) { |
| 622 | if (flags & PATHSPEC_PREFER_FULL) |
| 623 | return; |
| 624 | |
| 625 | if (!(flags & PATHSPEC_PREFER_CWD)) |
| 626 | BUG("PATHSPEC_PREFER_CWD requires arguments"); |
| 627 | |
| 628 | pathspec->items = CALLOC_ARRAY(item, 1); |
| 629 | item->match = xstrdup(prefix); |
| 630 | item->original = xstrdup(prefix); |
| 631 | item->nowildcard_len = item->len = strlen(prefix); |
| 632 | item->prefix = item->len; |
| 633 | pathspec->nr = 1; |
| 634 | return; |
| 635 | } |
| 636 | |
| 637 | n = 0; |
| 638 | while (argv[n]) { |
| 639 | if (*argv[n] == '\0') |
| 640 | die("empty string is not a valid pathspec. " |
| 641 | "please use . instead if you meant to match all paths"); |
| 642 | n++; |
| 643 | } |
| 644 | |
| 645 | pathspec->nr = n; |
| 646 | ALLOC_ARRAY(pathspec->items, n + 1); |
| 647 | item = pathspec->items; |
| 648 | prefixlen = prefix ? strlen(prefix) : 0; |
| 649 | |
| 650 | for (i = 0; i < n; i++) { |
| 651 | entry = argv[i]; |
| 652 | |
| 653 | init_pathspec_item(item + i, flags, prefix, prefixlen, entry); |
| 654 | |
| 655 | if (item[i].magic & PATHSPEC_EXCLUDE) |
| 656 | nr_exclude++; |
| 657 | if (item[i].magic & magic_mask) |
| 658 | unsupported_magic(entry, item[i].magic & magic_mask); |
| 659 | |
| 660 | if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) && |
| 661 | has_symlink_leading_path(item[i].match, item[i].len)) { |
| 662 | die(_("pathspec '%s' is beyond a symbolic link"), entry); |
| 663 | } |
| 664 | |
| 665 | if (item[i].nowildcard_len < item[i].len) |
| 666 | pathspec->has_wildcard = 1; |
| 667 | pathspec->magic |= item[i].magic; |
| 668 | } |
| 669 | |
| 670 | /* |
| 671 | * If everything is an exclude pattern, add one positive pattern |
| 672 | * that matches everything. We allocated an extra one for this. |
| 673 | */ |
| 674 | if (nr_exclude == n) { |
| 675 | int plen = (!(flags & PATHSPEC_PREFER_CWD)) ? 0 : prefixlen; |
| 676 | init_pathspec_item(item + n, 0, prefix, plen, "."); |
| 677 | pathspec->nr++; |
| 678 | } |
| 679 | |
| 680 | if (pathspec->magic & PATHSPEC_MAXDEPTH) { |
| 681 | if (flags & PATHSPEC_KEEP_ORDER) |
| 682 | BUG("PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible"); |
| 683 | QSORT(pathspec->items, pathspec->nr, pathspec_item_cmp); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | void parse_pathspec_file(struct pathspec *pathspec, unsigned magic_mask, |
| 688 | unsigned flags, const char *prefix, |
| 689 | const char *file, int nul_term_line) |
| 690 | { |
| 691 | struct strvec parsed_file = STRVEC_INIT; |
| 692 | strbuf_getline_fn getline_fn = nul_term_line ? strbuf_getline_nul : |
| 693 | strbuf_getline; |
| 694 | struct strbuf buf = STRBUF_INIT; |
| 695 | struct strbuf unquoted = STRBUF_INIT; |
| 696 | FILE *in; |
| 697 | |
| 698 | if (!strcmp(file, "-")) |
| 699 | in = stdin; |
| 700 | else |
| 701 | in = xfopen(file, "r"); |
| 702 | |
| 703 | while (getline_fn(&buf, in) != EOF) { |
| 704 | if (!nul_term_line && buf.buf[0] == '"') { |
| 705 | strbuf_reset(&unquoted); |
| 706 | if (unquote_c_style(&unquoted, buf.buf, NULL)) |
| 707 | die(_("line is badly quoted: %s"), buf.buf); |
| 708 | strbuf_swap(&buf, &unquoted); |
| 709 | } |
| 710 | strvec_push(&parsed_file, buf.buf); |
| 711 | strbuf_reset(&buf); |
| 712 | } |
| 713 | |
| 714 | strbuf_release(&unquoted); |
| 715 | strbuf_release(&buf); |
| 716 | if (in != stdin) |
| 717 | fclose(in); |
| 718 | |
| 719 | parse_pathspec(pathspec, magic_mask, flags, prefix, parsed_file.v); |
| 720 | strvec_clear(&parsed_file); |
| 721 | } |
| 722 | |
| 723 | void copy_pathspec(struct pathspec *dst, const struct pathspec *src) |
| 724 | { |
| 725 | int i, j; |
| 726 | |
| 727 | *dst = *src; |
| 728 | DUP_ARRAY(dst->items, src->items, dst->nr); |
| 729 | |
| 730 | for (i = 0; i < dst->nr; i++) { |
| 731 | struct pathspec_item *d = &dst->items[i]; |
| 732 | struct pathspec_item *s = &src->items[i]; |
| 733 | |
| 734 | d->match = xstrdup(s->match); |
| 735 | d->original = xstrdup(s->original); |
| 736 | |
| 737 | DUP_ARRAY(d->attr_match, s->attr_match, d->attr_match_nr); |
| 738 | for (j = 0; j < d->attr_match_nr; j++) { |
| 739 | const char *value = s->attr_match[j].value; |
| 740 | d->attr_match[j].value = xstrdup_or_null(value); |
| 741 | } |
| 742 | |
| 743 | d->attr_check = attr_check_dup(s->attr_check); |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | void clear_pathspec(struct pathspec *pathspec) |
| 748 | { |
| 749 | int i, j; |
| 750 | |
| 751 | for (i = 0; i < pathspec->nr; i++) { |
| 752 | free(pathspec->items[i].match); |
| 753 | free(pathspec->items[i].original); |
| 754 | |
| 755 | for (j = 0; j < pathspec->items[i].attr_match_nr; j++) |
| 756 | free(pathspec->items[i].attr_match[j].value); |
| 757 | free(pathspec->items[i].attr_match); |
| 758 | |
| 759 | if (pathspec->items[i].attr_check) |
| 760 | attr_check_free(pathspec->items[i].attr_check); |
| 761 | } |
| 762 | |
| 763 | FREE_AND_NULL(pathspec->items); |
| 764 | pathspec->nr = 0; |
| 765 | } |
| 766 | |
| 767 | int match_pathspec_attrs(struct index_state *istate, |
| 768 | const char *name, int namelen, |
| 769 | const struct pathspec_item *item) |
| 770 | { |
| 771 | int i; |
| 772 | char *to_free = NULL; |
| 773 | |
| 774 | if (name[namelen]) |
| 775 | name = to_free = xmemdupz(name, namelen); |
| 776 | |
| 777 | git_check_attr(istate, name, item->attr_check); |
| 778 | |
| 779 | free(to_free); |
| 780 | |
| 781 | for (i = 0; i < item->attr_match_nr; i++) { |
| 782 | const char *value; |
| 783 | int matched; |
| 784 | enum attr_match_mode match_mode; |
| 785 | |
| 786 | value = item->attr_check->items[i].value; |
| 787 | match_mode = item->attr_match[i].match_mode; |
| 788 | |
| 789 | if (ATTR_TRUE(value)) |
| 790 | matched = (match_mode == MATCH_SET); |
| 791 | else if (ATTR_FALSE(value)) |
| 792 | matched = (match_mode == MATCH_UNSET); |
| 793 | else if (ATTR_UNSET(value)) |
| 794 | matched = (match_mode == MATCH_UNSPECIFIED); |
| 795 | else |
| 796 | matched = (match_mode == MATCH_VALUE && |
| 797 | !strcmp(item->attr_match[i].value, value)); |
| 798 | if (!matched) |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | return 1; |
| 803 | } |
| 804 | |
| 805 | int pathspec_needs_expanded_index(struct index_state *istate, |
| 806 | const struct pathspec *pathspec) |
| 807 | { |
| 808 | unsigned int pos; |
| 809 | int i, res = 0; |
| 810 | char *skip_worktree_seen = NULL; |
| 811 | |
| 812 | /* |
| 813 | * If index is not sparse, no index expansion is needed. |
| 814 | */ |
| 815 | if (!istate->sparse_index) |
| 816 | return 0; |
| 817 | |
| 818 | /* |
| 819 | * When using a magic pathspec, assume for the sake of simplicity that |
| 820 | * the index needs to be expanded to match all matchable files. |
| 821 | */ |
| 822 | if (pathspec->magic) |
| 823 | return 1; |
| 824 | |
| 825 | for (i = 0; i < pathspec->nr; i++) { |
| 826 | struct pathspec_item item = pathspec->items[i]; |
| 827 | |
| 828 | /* |
| 829 | * If the pathspec item has a wildcard, the index should be expanded |
| 830 | * if the pathspec has the possibility of matching a subset of entries inside |
| 831 | * of a sparse directory (but not the entire directory). |
| 832 | * |
| 833 | * If the pathspec item is a literal path, the index only needs to be expanded |
| 834 | * if a) the pathspec isn't in the sparse checkout cone (to make sure we don't |
| 835 | * expand for in-cone files) and b) it doesn't match any sparse directories |
| 836 | * (since we can reset whole sparse directories without expanding them). |
| 837 | */ |
| 838 | if (item.nowildcard_len < item.len) { |
| 839 | /* |
| 840 | * Special case: if the pattern is a path inside the cone |
| 841 | * followed by only wildcards, the pattern cannot match |
| 842 | * partial sparse directories, so we know we don't need to |
| 843 | * expand the index. |
| 844 | * |
| 845 | * Examples: |
| 846 | * - in-cone/foo***: doesn't need expanded index |
| 847 | * - not-in-cone/bar*: may need expanded index |
| 848 | * - **.c: may need expanded index |
| 849 | */ |
| 850 | if (strspn(item.original + item.nowildcard_len, "*") == |
| 851 | (unsigned int)(item.len - item.nowildcard_len) && |
| 852 | path_in_cone_mode_sparse_checkout(item.original, istate)) |
| 853 | continue; |
| 854 | |
| 855 | for (pos = 0; pos < istate->cache_nr; pos++) { |
| 856 | struct cache_entry *ce = istate->cache[pos]; |
| 857 | |
| 858 | if (!S_ISSPARSEDIR(ce->ce_mode)) |
| 859 | continue; |
| 860 | |
| 861 | /* |
| 862 | * If the pre-wildcard length is longer than the sparse |
| 863 | * directory name and the sparse directory is the first |
| 864 | * component of the pathspec, need to expand the index. |
| 865 | */ |
| 866 | if ((unsigned int)item.nowildcard_len > |
| 867 | ce_namelen(ce) && |
| 868 | !strncmp(item.original, ce->name, |
| 869 | ce_namelen(ce))) { |
| 870 | res = 1; |
| 871 | break; |
| 872 | } |
| 873 | |
| 874 | /* |
| 875 | * If the pre-wildcard length is shorter than the sparse |
| 876 | * directory and the pathspec does not match the whole |
| 877 | * directory, need to expand the index. |
| 878 | */ |
| 879 | if (!strncmp(item.original, ce->name, item.nowildcard_len) && |
| 880 | wildmatch(item.original, ce->name, 0)) { |
| 881 | res = 1; |
| 882 | break; |
| 883 | } |
| 884 | } |
| 885 | } else if (!path_in_cone_mode_sparse_checkout(item.original, istate) && |
| 886 | !matches_skip_worktree(pathspec, i, &skip_worktree_seen)) |
| 887 | res = 1; |
| 888 | |
| 889 | if (res > 0) |
| 890 | break; |
| 891 | } |
| 892 | |
| 893 | free(skip_worktree_seen); |
| 894 | return res; |
| 895 | } |