1 /* $NetBSD: regex.h,v 1.1.1.1 2016/01/10 21:36:19 christos Exp $ */ 2 3 /* Definitions for data structures and routines for the regular 4 expression library, version 0.12. 5 Copyright (C) 1985,1989-1993,1995-1998, 2000 Free Software Foundation, Inc. 6 7 This file is part of the GNU C Library. Its master source is NOT part of 8 the C library, however. The master source lives in /gd/gnu/lib. 9 10 The GNU C Library is free software; you can redistribute it and/or 11 modify it under the terms of the GNU Library General Public License as 12 published by the Free Software Foundation; either version 2 of the 13 License, or (at your option) any later version. 14 15 The GNU C Library is distributed in the hope that it will be useful, 16 but WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 Library General Public License for more details. 19 20 You should have received a copy of the GNU Library General Public 21 License along with the GNU C Library; see the file COPYING.LIB. If not, 22 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 23 Boston, MA 02111-1307, USA. */ 24 25 #ifndef _REGEX_H 26 #define _REGEX_H 1 27 28 /* Allow the use in C++ code. */ 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /* POSIX says that <sys/types.h> must be included (by the caller) before 34 <regex.h>. */ 35 36 #if !defined _POSIX_C_SOURCE && !defined _POSIX_SOURCE && defined VMS 37 /* VMS doesn't have `size_t' in <sys/types.h>, even though POSIX says it 38 should be there. */ 39 # include <stddef.h> 40 #endif 41 42 /* The following two types have to be signed and unsigned integer type 43 wide enough to hold a value of a pointer. For most ANSI compilers 44 ptrdiff_t and size_t should be likely OK. Still size of these two 45 types is 2 for Microsoft C. Ugh... */ 46 typedef long int s_reg_t; 47 typedef unsigned long int active_reg_t; 48 49 /* The following bits are used to determine the regexp syntax we 50 recognize. The set/not-set meanings are chosen so that Emacs syntax 51 remains the value 0. The bits are given in alphabetical order, and 52 the definitions shifted by one from the previous bit; thus, when we 53 add or remove a bit, only one other definition need change. */ 54 typedef unsigned long int reg_syntax_t; 55 56 /* If this bit is not set, then \ inside a bracket expression is literal. 57 If set, then such a \ quotes the following character. */ 58 #define RE_BACKSLASH_ESCAPE_IN_LISTS ((unsigned long int) 1) 59 60 /* If this bit is not set, then + and ? are operators, and \+ and \? are 61 literals. 62 If set, then \+ and \? are operators and + and ? are literals. */ 63 #define RE_BK_PLUS_QM (RE_BACKSLASH_ESCAPE_IN_LISTS << 1) 64 65 /* If this bit is set, then character classes are supported. They are: 66 [:alpha:], [:upper:], [:lower:], [:digit:], [:alnum:], [:xdigit:], 67 [:space:], [:print:], [:punct:], [:graph:], and [:cntrl:]. 68 If not set, then character classes are not supported. */ 69 #define RE_CHAR_CLASSES (RE_BK_PLUS_QM << 1) 70 71 /* If this bit is set, then ^ and $ are always anchors (outside bracket 72 expressions, of course). 73 If this bit is not set, then it depends: 74 ^ is an anchor if it is at the beginning of a regular 75 expression or after an open-group or an alternation operator; 76 $ is an anchor if it is at the end of a regular expression, or 77 before a close-group or an alternation operator. 78 79 This bit could be (re)combined with RE_CONTEXT_INDEP_OPS, because 80 POSIX draft 11.2 says that * etc. in leading positions is undefined. 81 We already implemented a previous draft which made those constructs 82 invalid, though, so we haven't changed the code back. */ 83 #define RE_CONTEXT_INDEP_ANCHORS (RE_CHAR_CLASSES << 1) 84 85 /* If this bit is set, then special characters are always special 86 regardless of where they are in the pattern. 87 If this bit is not set, then special characters are special only in 88 some contexts; otherwise they are ordinary. Specifically, 89 * + ? and intervals are only special when not after the beginning, 90 open-group, or alternation operator. */ 91 #define RE_CONTEXT_INDEP_OPS (RE_CONTEXT_INDEP_ANCHORS << 1) 92 93 /* If this bit is set, then *, +, ?, and { cannot be first in an re or 94 immediately after an alternation or begin-group operator. */ 95 #define RE_CONTEXT_INVALID_OPS (RE_CONTEXT_INDEP_OPS << 1) 96 97 /* If this bit is set, then . matches newline. 98 If not set, then it doesn't. */ 99 #define RE_DOT_NEWLINE (RE_CONTEXT_INVALID_OPS << 1) 100 101 /* If this bit is set, then . doesn't match NUL. 102 If not set, then it does. */ 103 #define RE_DOT_NOT_NULL (RE_DOT_NEWLINE << 1) 104 105 /* If this bit is set, nonmatching lists [^...] do not match newline. 106 If not set, they do. */ 107 #define RE_HAT_LISTS_NOT_NEWLINE (RE_DOT_NOT_NULL << 1) 108 109 /* If this bit is set, either \{...\} or {...} defines an 110 interval, depending on RE_NO_BK_BRACES. 111 If not set, \{, \}, {, and } are literals. */ 112 #define RE_INTERVALS (RE_HAT_LISTS_NOT_NEWLINE << 1) 113 114 /* If this bit is set, +, ? and | aren't recognized as operators. 115 If not set, they are. */ 116 #define RE_LIMITED_OPS (RE_INTERVALS << 1) 117 118 /* If this bit is set, newline is an alternation operator. 119 If not set, newline is literal. */ 120 #define RE_NEWLINE_ALT (RE_LIMITED_OPS << 1) 121 122 /* If this bit is set, then `{...}' defines an interval, and \{ and \} 123 are literals. 124 If not set, then `\{...\}' defines an interval. */ 125 #define RE_NO_BK_BRACES (RE_NEWLINE_ALT << 1) 126 127 /* If this bit is set, (...) defines a group, and \( and \) are literals. 128 If not set, \(...\) defines a group, and ( and ) are literals. */ 129 #define RE_NO_BK_PARENS (RE_NO_BK_BRACES << 1) 130 131 /* If this bit is set, then \<digit> matches <digit>. 132 If not set, then \<digit> is a back-reference. */ 133 #define RE_NO_BK_REFS (RE_NO_BK_PARENS << 1) 134 135 /* If this bit is set, then | is an alternation operator, and \| is literal. 136 If not set, then \| is an alternation operator, and | is literal. */ 137 #define RE_NO_BK_VBAR (RE_NO_BK_REFS << 1) 138 139 /* If this bit is set, then an ending range point collating higher 140 than the starting range point, as in [z-a], is invalid. 141 If not set, then when ending range point collates higher than the 142 starting range point, the range is ignored. */ 143 #define RE_NO_EMPTY_RANGES (RE_NO_BK_VBAR << 1) 144 145 /* If this bit is set, then an unmatched ) is ordinary. 146 If not set, then an unmatched ) is invalid. */ 147 #define RE_UNMATCHED_RIGHT_PAREN_ORD (RE_NO_EMPTY_RANGES << 1) 148 149 /* If this bit is set, succeed as soon as we match the whole pattern, 150 without further backtracking. */ 151 #define RE_NO_POSIX_BACKTRACKING (RE_UNMATCHED_RIGHT_PAREN_ORD << 1) 152 153 /* If this bit is set, do not process the GNU regex operators. 154 If not set, then the GNU regex operators are recognized. */ 155 #define RE_NO_GNU_OPS (RE_NO_POSIX_BACKTRACKING << 1) 156 157 /* If this bit is set, turn on internal regex debugging. 158 If not set, and debugging was on, turn it off. 159 This only works if regex.c is compiled -DDEBUG. 160 We define this bit always, so that all that's needed to turn on 161 debugging is to recompile regex.c; the calling code can always have 162 this bit set, and it won't affect anything in the normal case. */ 163 #define RE_DEBUG (RE_NO_GNU_OPS << 1) 164 165 /* If this bit is set, a syntactically invalid interval is treated as 166 a string of ordinary characters. For example, the ERE 'a{1' is 167 treated as 'a\{1'. */ 168 #define RE_INVALID_INTERVAL_ORD (RE_DEBUG << 1) 169 170 /* This global variable defines the particular regexp syntax to use (for 171 some interfaces). When a regexp is compiled, the syntax used is 172 stored in the pattern buffer, so changing this does not affect 173 already-compiled regexps. */ 174 extern reg_syntax_t re_syntax_options; 175 176 /* Define combinations of the above bits for the standard possibilities. 177 (The [[[ comments delimit what gets put into the Texinfo file, so 178 don't delete them!) */ 179 /* [[[begin syntaxes]]] */ 180 #define RE_SYNTAX_EMACS 0 181 182 #define RE_SYNTAX_AWK \ 183 (RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DOT_NOT_NULL \ 184 | RE_NO_BK_PARENS | RE_NO_BK_REFS \ 185 | RE_NO_BK_VBAR | RE_NO_EMPTY_RANGES \ 186 | RE_DOT_NEWLINE | RE_CONTEXT_INDEP_ANCHORS \ 187 | RE_UNMATCHED_RIGHT_PAREN_ORD | RE_NO_GNU_OPS) 188 189 #define RE_SYNTAX_GNU_AWK \ 190 ((RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS | RE_DEBUG) \ 191 & ~(RE_DOT_NOT_NULL | RE_INTERVALS | RE_CONTEXT_INDEP_OPS)) 192 193 #define RE_SYNTAX_POSIX_AWK \ 194 (RE_SYNTAX_POSIX_EXTENDED | RE_BACKSLASH_ESCAPE_IN_LISTS \ 195 | RE_INTERVALS | RE_NO_GNU_OPS) 196 197 #define RE_SYNTAX_GREP \ 198 (RE_BK_PLUS_QM | RE_CHAR_CLASSES \ 199 | RE_HAT_LISTS_NOT_NEWLINE | RE_INTERVALS \ 200 | RE_NEWLINE_ALT) 201 202 #define RE_SYNTAX_EGREP \ 203 (RE_CHAR_CLASSES | RE_CONTEXT_INDEP_ANCHORS \ 204 | RE_CONTEXT_INDEP_OPS | RE_HAT_LISTS_NOT_NEWLINE \ 205 | RE_NEWLINE_ALT | RE_NO_BK_PARENS \ 206 | RE_NO_BK_VBAR) 207 208 #define RE_SYNTAX_POSIX_EGREP \ 209 (RE_SYNTAX_EGREP | RE_INTERVALS | RE_NO_BK_BRACES \ 210 | RE_INVALID_INTERVAL_ORD) 211 212 /* P1003.2/D11.2, section 4.20.7.1, lines 5078ff. */ 213 #define RE_SYNTAX_ED RE_SYNTAX_POSIX_BASIC 214 215 #define RE_SYNTAX_SED RE_SYNTAX_POSIX_BASIC 216 217 /* Syntax bits common to both basic and extended POSIX regex syntax. */ 218 #define _RE_SYNTAX_POSIX_COMMON \ 219 (RE_CHAR_CLASSES | RE_DOT_NEWLINE | RE_DOT_NOT_NULL \ 220 | RE_INTERVALS | RE_NO_EMPTY_RANGES) 221 222 #define RE_SYNTAX_POSIX_BASIC \ 223 (_RE_SYNTAX_POSIX_COMMON | RE_BK_PLUS_QM) 224 225 /* Differs from ..._POSIX_BASIC only in that RE_BK_PLUS_QM becomes 226 RE_LIMITED_OPS, i.e., \? \+ \| are not recognized. Actually, this 227 isn't minimal, since other operators, such as \`, aren't disabled. */ 228 #define RE_SYNTAX_POSIX_MINIMAL_BASIC \ 229 (_RE_SYNTAX_POSIX_COMMON | RE_LIMITED_OPS) 230 231 #define RE_SYNTAX_POSIX_EXTENDED \ 232 (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \ 233 | RE_CONTEXT_INDEP_OPS | RE_NO_BK_BRACES \ 234 | RE_NO_BK_PARENS | RE_NO_BK_VBAR \ 235 | RE_CONTEXT_INVALID_OPS | RE_UNMATCHED_RIGHT_PAREN_ORD) 236 237 /* Differs from ..._POSIX_EXTENDED in that RE_CONTEXT_INDEP_OPS is 238 removed and RE_NO_BK_REFS is added. */ 239 #define RE_SYNTAX_POSIX_MINIMAL_EXTENDED \ 240 (_RE_SYNTAX_POSIX_COMMON | RE_CONTEXT_INDEP_ANCHORS \ 241 | RE_CONTEXT_INVALID_OPS | RE_NO_BK_BRACES \ 242 | RE_NO_BK_PARENS | RE_NO_BK_REFS \ 243 | RE_NO_BK_VBAR | RE_UNMATCHED_RIGHT_PAREN_ORD) 244 /* [[[end syntaxes]]] */ 245 246 /* Maximum number of duplicates an interval can allow. Some systems 247 (erroneously) define this in other header files, but we want our 248 value, so remove any previous define. */ 249 #ifdef RE_DUP_MAX 250 # undef RE_DUP_MAX 251 #endif 252 /* If sizeof(int) == 2, then ((1 << 15) - 1) overflows. */ 253 #define RE_DUP_MAX (0x7fff) 254 255 256 /* POSIX `cflags' bits (i.e., information for `regcomp'). */ 257 258 /* If this bit is set, then use extended regular expression syntax. 259 If not set, then use basic regular expression syntax. */ 260 #define REG_EXTENDED 1 261 262 /* If this bit is set, then ignore case when matching. 263 If not set, then case is significant. */ 264 #define REG_ICASE (REG_EXTENDED << 1) 265 266 /* If this bit is set, then anchors do not match at newline 267 characters in the string. 268 If not set, then anchors do match at newlines. */ 269 #define REG_NEWLINE (REG_ICASE << 1) 270 271 /* If this bit is set, then report only success or fail in regexec. 272 If not set, then returns differ between not matching and errors. */ 273 #define REG_NOSUB (REG_NEWLINE << 1) 274 275 276 /* POSIX `eflags' bits (i.e., information for regexec). */ 277 278 /* If this bit is set, then the beginning-of-line operator doesn't match 279 the beginning of the string (presumably because it's not the 280 beginning of a line). 281 If not set, then the beginning-of-line operator does match the 282 beginning of the string. */ 283 #define REG_NOTBOL 1 284 285 /* Like REG_NOTBOL, except for the end-of-line. */ 286 #define REG_NOTEOL (1 << 1) 287 288 289 /* If any error codes are removed, changed, or added, update the 290 `re_error_msg' table in regex.c. */ 291 typedef enum 292 { 293 #ifdef _XOPEN_SOURCE 294 REG_ENOSYS = -1, /* This will never happen for this implementation. */ 295 #endif 296 297 REG_NOERROR = 0, /* Success. */ 298 REG_NOMATCH, /* Didn't find a match (for regexec). */ 299 300 /* POSIX regcomp return error codes. (In the order listed in the 301 standard.) */ 302 REG_BADPAT, /* Invalid pattern. */ 303 REG_ECOLLATE, /* Not implemented. */ 304 REG_ECTYPE, /* Invalid character class name. */ 305 REG_EESCAPE, /* Trailing backslash. */ 306 REG_ESUBREG, /* Invalid back reference. */ 307 REG_EBRACK, /* Unmatched left bracket. */ 308 REG_EPAREN, /* Parenthesis imbalance. */ 309 REG_EBRACE, /* Unmatched \{. */ 310 REG_BADBR, /* Invalid contents of \{\}. */ 311 REG_ERANGE, /* Invalid range end. */ 312 REG_ESPACE, /* Ran out of memory. */ 313 REG_BADRPT, /* No preceding re for repetition op. */ 314 315 /* Error codes we've added. */ 316 REG_EEND, /* Premature end. */ 317 REG_ESIZE, /* Compiled pattern bigger than 2^16 bytes. */ 318 REG_ERPAREN /* Unmatched ) or \); not returned from regcomp. */ 319 } reg_errcode_t; 320 321 /* This data structure represents a compiled pattern. Before calling 322 the pattern compiler, the fields `buffer', `allocated', `fastmap', 323 `translate', and `no_sub' can be set. After the pattern has been 324 compiled, the `re_nsub' field is available. All other fields are 325 private to the regex routines. */ 326 327 #ifndef RE_TRANSLATE_TYPE 328 # define RE_TRANSLATE_TYPE char * 329 #endif 330 331 struct re_pattern_buffer 332 { 333 /* [[[begin pattern_buffer]]] */ 334 /* Space that holds the compiled pattern. It is declared as 335 `unsigned char *' because its elements are 336 sometimes used as array indexes. */ 337 unsigned char *buffer; 338 339 /* Number of bytes to which `buffer' points. */ 340 unsigned long int allocated; 341 342 /* Number of bytes actually used in `buffer'. */ 343 unsigned long int used; 344 345 /* Syntax setting with which the pattern was compiled. */ 346 reg_syntax_t syntax; 347 348 /* Pointer to a fastmap, if any, otherwise zero. re_search uses 349 the fastmap, if there is one, to skip over impossible 350 starting points for matches. */ 351 char *fastmap; 352 353 /* Either a translate table to apply to all characters before 354 comparing them, or zero for no translation. The translation 355 is applied to a pattern when it is compiled and to a string 356 when it is matched. */ 357 RE_TRANSLATE_TYPE translate; 358 359 /* Number of subexpressions found by the compiler. */ 360 size_t re_nsub; 361 362 /* Zero if this pattern cannot match the empty string, one else. 363 Well, in truth it's used only in `re_search_2', to see 364 whether or not we should use the fastmap, so we don't set 365 this absolutely perfectly; see `re_compile_fastmap' (the 366 `duplicate' case). */ 367 unsigned can_be_null : 1; 368 369 /* If REGS_UNALLOCATED, allocate space in the `regs' structure 370 for `max (RE_NREGS, re_nsub + 1)' groups. 371 If REGS_REALLOCATE, reallocate space if necessary. 372 If REGS_FIXED, use what's there. */ 373 #define REGS_UNALLOCATED 0 374 #define REGS_REALLOCATE 1 375 #define REGS_FIXED 2 376 unsigned regs_allocated : 2; 377 378 /* Set to zero when `regex_compile' compiles a pattern; set to one 379 by `re_compile_fastmap' if it updates the fastmap. */ 380 unsigned fastmap_accurate : 1; 381 382 /* If set, `re_match_2' does not return information about 383 subexpressions. */ 384 unsigned no_sub : 1; 385 386 /* If set, a beginning-of-line anchor doesn't match at the 387 beginning of the string. */ 388 unsigned not_bol : 1; 389 390 /* Similarly for an end-of-line anchor. */ 391 unsigned not_eol : 1; 392 393 /* If true, an anchor at a newline matches. */ 394 unsigned newline_anchor : 1; 395 396 /* [[[end pattern_buffer]]] */ 397 }; 398 399 typedef struct re_pattern_buffer regex_t; 400 401 /* Type for byte offsets within the string. POSIX mandates this. */ 402 typedef int regoff_t; 403 404 405 /* This is the structure we store register match data in. See 406 regex.texinfo for a full description of what registers match. */ 407 struct re_registers 408 { 409 unsigned num_regs; 410 regoff_t *start; 411 regoff_t *end; 412 }; 413 414 415 /* If `regs_allocated' is REGS_UNALLOCATED in the pattern buffer, 416 `re_match_2' returns information about at least this many registers 417 the first time a `regs' structure is passed. */ 418 #ifndef RE_NREGS 419 # define RE_NREGS 30 420 #endif 421 422 423 /* POSIX specification for registers. Aside from the different names than 424 `re_registers', POSIX uses an array of structures, instead of a 425 structure of arrays. */ 426 typedef struct 427 { 428 regoff_t rm_so; /* Byte offset from string's start to substring's start. */ 429 regoff_t rm_eo; /* Byte offset from string's start to substring's end. */ 430 } regmatch_t; 431 432 /* Declarations for routines. */ 433 434 /* To avoid duplicating every routine declaration -- once with a 435 prototype (if we are ANSI), and once without (if we aren't) -- we 436 use the following macro to declare argument types. This 437 unfortunately clutters up the declarations a bit, but I think it's 438 worth it. */ 439 440 #if __STDC__ 441 442 # define _RE_ARGS(args) args 443 444 #else /* not __STDC__ */ 445 446 # define _RE_ARGS(args) () 447 448 #endif /* not __STDC__ */ 449 450 /* Sets the current default syntax to SYNTAX, and return the old syntax. 451 You can also simply assign to the `re_syntax_options' variable. */ 452 extern reg_syntax_t re_set_syntax _RE_ARGS ((reg_syntax_t syntax)); 453 454 /* Compile the regular expression PATTERN, with length LENGTH 455 and syntax given by the global `re_syntax_options', into the buffer 456 BUFFER. Return NULL if successful, and an error string if not. */ 457 extern const char *re_compile_pattern 458 _RE_ARGS ((const char *pattern, size_t length, 459 struct re_pattern_buffer *buffer)); 460 461 462 /* Compile a fastmap for the compiled pattern in BUFFER; used to 463 accelerate searches. Return 0 if successful and -2 if was an 464 internal error. */ 465 extern int re_compile_fastmap _RE_ARGS ((struct re_pattern_buffer *buffer)); 466 467 468 /* Search in the string STRING (with length LENGTH) for the pattern 469 compiled into BUFFER. Start searching at position START, for RANGE 470 characters. Return the starting position of the match, -1 for no 471 match, or -2 for an internal error. Also return register 472 information in REGS (if REGS and BUFFER->no_sub are nonzero). */ 473 extern int re_search 474 _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string, 475 int length, int start, int range, struct re_registers *regs)); 476 477 478 /* Like `re_search', but search in the concatenation of STRING1 and 479 STRING2. Also, stop searching at index START + STOP. */ 480 extern int re_search_2 481 _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string1, 482 int length1, const char *string2, int length2, 483 int start, int range, struct re_registers *regs, int stop)); 484 485 486 /* Like `re_search', but return how many characters in STRING the regexp 487 in BUFFER matched, starting at position START. */ 488 extern int re_match 489 _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string, 490 int length, int start, struct re_registers *regs)); 491 492 493 /* Relates to `re_match' as `re_search_2' relates to `re_search'. */ 494 extern int re_match_2 495 _RE_ARGS ((struct re_pattern_buffer *buffer, const char *string1, 496 int length1, const char *string2, int length2, 497 int start, struct re_registers *regs, int stop)); 498 499 500 /* Set REGS to hold NUM_REGS registers, storing them in STARTS and 501 ENDS. Subsequent matches using BUFFER and REGS will use this memory 502 for recording register information. STARTS and ENDS must be 503 allocated with malloc, and must each be at least `NUM_REGS * sizeof 504 (regoff_t)' bytes long. 505 506 If NUM_REGS == 0, then subsequent matches should allocate their own 507 register data. 508 509 Unless this function is called, the first search or match using 510 PATTERN_BUFFER will allocate its own register data, without 511 freeing the old data. */ 512 extern void re_set_registers 513 _RE_ARGS ((struct re_pattern_buffer *buffer, struct re_registers *regs, 514 unsigned num_regs, regoff_t *starts, regoff_t *ends)); 515 516 #if defined _REGEX_RE_COMP || defined _LIBC 517 # ifndef _CRAY 518 /* 4.2 bsd compatibility. */ 519 extern char *re_comp _RE_ARGS ((const char *)); 520 extern int re_exec _RE_ARGS ((const char *)); 521 # endif 522 #endif 523 524 /* GCC 2.95 and later have "__restrict"; C99 compilers have 525 "restrict", and "configure" may have defined "restrict". */ 526 #ifndef __restrict 527 # if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__)) 528 # if defined restrict || 199901L <= __STDC_VERSION__ 529 # define __restrict restrict 530 # else 531 # define __restrict 532 # endif 533 # endif 534 #endif 535 /* For now unconditionally define __restrict_arr to expand to nothing. 536 Ideally we would have a test for the compiler which allows defining 537 it to restrict. */ 538 #define __restrict_arr 539 540 /* POSIX compatibility. */ 541 extern int regcomp _RE_ARGS ((regex_t *__restrict __preg, 542 const char *__restrict __pattern, 543 int __cflags)); 544 545 extern int regexec _RE_ARGS ((const regex_t *__restrict __preg, 546 const char *__restrict __string, size_t __nmatch, 547 regmatch_t __pmatch[__restrict_arr], 548 int __eflags)); 549 550 extern size_t regerror _RE_ARGS ((int __errcode, const regex_t *__preg, 551 char *__errbuf, size_t __errbuf_size)); 552 553 extern void regfree _RE_ARGS ((regex_t *__preg)); 554 555 556 #ifdef __cplusplus 557 } 558 #endif /* C++ */ 559 560 #endif /* regex.h */ 561 562 /* 563 Local variables: 564 make-backup-files: t 565 version-control: t 566 trim-versions-without-asking: nil 567 End: 568 */ 569