release/src/router/pcre/pcre_internal.h

   1 /*************************************************
   2 *      Perl-Compatible Regular Expressions       *
   3 *************************************************/
   4
   5
   6 /* PCRE is a library of functions to support regular expressions whose syntax
   7 and semantics are as close as possible to those of the Perl 5 language.
   8
   9                        Written by Philip Hazel
  10            Copyright (c) 1997-2014 University of Cambridge
  11
  12 -----------------------------------------------------------------------------
  13 Redistribution and use in source and binary forms, with or without
  14 modification, are permitted provided that the following conditions are met:
  15
  16     * Redistributions of source code must retain the above copyright notice,
  17       this list of conditions and the following disclaimer.
  18
  19     * Redistributions in binary form must reproduce the above copyright
  20       notice, this list of conditions and the following disclaimer in the
  21       documentation and/or other materials provided with the distribution.
  22
  23     * Neither the name of the University of Cambridge nor the names of its
  24       contributors may be used to endorse or promote products derived from
  25       this software without specific prior written permission.
  26
  27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  28 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  31 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37 POSSIBILITY OF SUCH DAMAGE.
  38 -----------------------------------------------------------------------------
  39 */
  40
  41 /* This header contains definitions that are shared between the different
  42 modules, but which are not relevant to the exported API. This includes some
  43 functions whose names all begin with "_pcre_", "_pcre16_" or "_pcre32_"
  44 depending on the PRIV macro. */
  45
  46 #ifndef PCRE_INTERNAL_H
  47 #define PCRE_INTERNAL_H
  48
  49 /* Define PCRE_DEBUG to get debugging output on stdout. */
  50
  51 #if 0
  52 #define PCRE_DEBUG
  53 #endif
  54
  55 /* PCRE is compiled as an 8 bit library if it is not requested otherwise. */
  56
  57 #if !defined COMPILE_PCRE16 && !defined COMPILE_PCRE32
  58 #define COMPILE_PCRE8
  59 #endif
  60
  61 /* If SUPPORT_UCP is defined, SUPPORT_UTF must also be defined. The
  62 "configure" script ensures this, but not everybody uses "configure". */
  63
  64 #if defined SUPPORT_UCP && !(defined SUPPORT_UTF)
  65 #define SUPPORT_UTF 1
  66 #endif
  67
  68 /* We define SUPPORT_UTF if SUPPORT_UTF8 is enabled for compatibility
  69 reasons with existing code. */
  70
  71 #if defined SUPPORT_UTF8 && !(defined SUPPORT_UTF)
  72 #define SUPPORT_UTF 1
  73 #endif
  74
  75 /* Fixme: SUPPORT_UTF8 should be eventually disappear from the code.
  76 Until then we define it if SUPPORT_UTF is defined. */
  77
  78 #if defined SUPPORT_UTF && !(defined SUPPORT_UTF8)
  79 #define SUPPORT_UTF8 1
  80 #endif
  81
  82 /* We do not support both EBCDIC and UTF-8/16/32 at the same time. The "configure"
  83 script prevents both being selected, but not everybody uses "configure". */
  84
  85 #if defined EBCDIC && defined SUPPORT_UTF
  86 #error The use of both EBCDIC and SUPPORT_UTF is not supported.
  87 #endif
  88
  89 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
  90 inline, and there are *still* stupid compilers about that don't like indented
  91 pre-processor statements, or at least there were when I first wrote this. After
  92 all, it had only been about 10 years then...
  93
  94 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
  95 be absolutely sure we get our version. */
  96
  97 #undef DPRINTF
  98 #ifdef PCRE_DEBUG
  99 #define DPRINTF(p) printf p
 100 #else
 101 #define DPRINTF(p) /* Nothing */
 102 #endif
 103
 104
 105 /* Standard C headers plus the external interface definition. The only time
 106 setjmp and stdarg are used is when NO_RECURSE is set. */
 107
 108 #include <ctype.h>
 109 #include <limits.h>
 110 #include <stddef.h>
 111 #include <stdio.h>
 112 #include <stdlib.h>
 113 #include <string.h>
 114
 115 /* Valgrind (memcheck) support */
 116
 117 #ifdef SUPPORT_VALGRIND
 118 #include <valgrind/memcheck.h>
 119 #endif
 120
 121 /* When compiling a DLL for Windows, the exported symbols have to be declared
 122 using some MS magic. I found some useful information on this web page:
 123 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
 124 information there, using __declspec(dllexport) without "extern" we have a
 125 definition; with "extern" we have a declaration. The settings here override the
 126 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
 127 which is all that is needed for applications (they just import the symbols). We
 128 use:
 129
 130   PCRE_EXP_DECL       for declarations
 131   PCRE_EXP_DEFN       for definitions of exported functions
 132   PCRE_EXP_DATA_DEFN  for definitions of exported variables
 133
 134 The reason for the two DEFN macros is that in non-Windows environments, one
 135 does not want to have "extern" before variable definitions because it leads to
 136 compiler warnings. So we distinguish between functions and variables. In
 137 Windows, the two should always be the same.
 138
 139 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
 140 which is an application, but needs to import this file in order to "peek" at
 141 internals, can #include pcre.h first to get an application's-eye view.
 142
 143 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
 144 special-purpose environments) might want to stick other stuff in front of
 145 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
 146 PCRE_EXP_DATA_DEFN only if they are not already set. */
 147
 148 #ifndef PCRE_EXP_DECL
 149 #  ifdef _WIN32
 150 #    ifndef PCRE_STATIC
 151 #      define PCRE_EXP_DECL       extern __declspec(dllexport)
 152 #      define PCRE_EXP_DEFN       __declspec(dllexport)
 153 #      define PCRE_EXP_DATA_DEFN  __declspec(dllexport)
 154 #    else
 155 #      define PCRE_EXP_DECL       extern
 156 #      define PCRE_EXP_DEFN
 157 #      define PCRE_EXP_DATA_DEFN
 158 #    endif
 159 #  else
 160 #    ifdef __cplusplus
 161 #      define PCRE_EXP_DECL       extern "C"
 162 #    else
 163 #      define PCRE_EXP_DECL       extern
 164 #    endif
 165 #    ifndef PCRE_EXP_DEFN
 166 #      define PCRE_EXP_DEFN       PCRE_EXP_DECL
 167 #    endif
 168 #    ifndef PCRE_EXP_DATA_DEFN
 169 #      define PCRE_EXP_DATA_DEFN
 170 #    endif
 171 #  endif
 172 #endif
 173
 174 /* When compiling with the MSVC compiler, it is sometimes necessary to include
 175 a "calling convention" before exported function names. (This is secondhand
 176 information; I know nothing about MSVC myself). For example, something like
 177
 178   void __cdecl function(....)
 179
 180 might be needed. In order so make this easy, all the exported functions have
 181 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
 182 set, we ensure here that it has no effect. */
 183
 184 #ifndef PCRE_CALL_CONVENTION
 185 #define PCRE_CALL_CONVENTION
 186 #endif
 187
 188 /* We need to have types that specify unsigned 8, 16 and 32-bit integers. We
 189 cannot determine these outside the compilation (e.g. by running a program as
 190 part of "configure") because PCRE is often cross-compiled for use on other
 191 systems. Instead we make use of the maximum sizes that are available at
 192 preprocessor time in standard C environments. */
 193
 194 typedef unsigned char pcre_uint8;
 195
 196 #if USHRT_MAX == 65535
 197 typedef unsigned short pcre_uint16;
 198 typedef short pcre_int16;
 199 #define PCRE_UINT16_MAX USHRT_MAX
 200 #define PCRE_INT16_MAX SHRT_MAX
 201 #elif UINT_MAX == 65535
 202 typedef unsigned int pcre_uint16;
 203 typedef int pcre_int16;
 204 #define PCRE_UINT16_MAX UINT_MAX
 205 #define PCRE_INT16_MAX INT_MAX
 206 #else
 207 #error Cannot determine a type for 16-bit integers
 208 #endif
 209
 210 #if UINT_MAX == 4294967295U
 211 typedef unsigned int pcre_uint32;
 212 typedef int pcre_int32;
 213 #define PCRE_UINT32_MAX UINT_MAX
 214 #define PCRE_INT32_MAX INT_MAX
 215 #elif ULONG_MAX == 4294967295UL
 216 typedef unsigned long int pcre_uint32;
 217 typedef long int pcre_int32;
 218 #define PCRE_UINT32_MAX ULONG_MAX
 219 #define PCRE_INT32_MAX LONG_MAX
 220 #else
 221 #error Cannot determine a type for 32-bit integers
 222 #endif
 223
 224 /* When checking for integer overflow in pcre_compile(), we need to handle
 225 large integers. If a 64-bit integer type is available, we can use that.
 226 Otherwise we have to cast to double, which of course requires floating point
 227 arithmetic. Handle this by defining a macro for the appropriate type. If
 228 stdint.h is available, include it; it may define INT64_MAX. Systems that do not
 229 have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
 230 by "configure". */
 231
 232 #if defined HAVE_STDINT_H
 233 #include <stdint.h>
 234 #elif defined HAVE_INTTYPES_H
 235 #include <inttypes.h>
 236 #endif
 237
 238 #if defined INT64_MAX || defined int64_t
 239 #define INT64_OR_DOUBLE int64_t
 240 #else
 241 #define INT64_OR_DOUBLE double
 242 #endif
 243
 244 /* All character handling must be done as unsigned characters. Otherwise there
 245 are problems with top-bit-set characters and functions such as isspace().
 246 However, we leave the interface to the outside world as char * or short *,
 247 because that should make things easier for callers. This character type is
 248 called pcre_uchar.
 249
 250 The IN_UCHARS macro multiply its argument with the byte size of the current
 251 pcre_uchar type. Useful for memcpy and such operations, whose require the
 252 byte size of their input/output buffers.
 253
 254 The MAX_255 macro checks whether its pcre_uchar input is less than 256.
 255
 256 The TABLE_GET macro is designed for accessing elements of tables whose contain
 257 exactly 256 items. When the character is able to contain more than 256
 258 items, some check is needed before accessing these tables.
 259 */
 260
 261 #if defined COMPILE_PCRE8
 262
 263 typedef unsigned char pcre_uchar;
 264 #define IN_UCHARS(x) (x)
 265 #define MAX_255(c) 1
 266 #define TABLE_GET(c, table, default) ((table)[c])
 267
 268 #elif defined COMPILE_PCRE16
 269
 270 #if USHRT_MAX != 65535
 271 /* This is a warning message. Change PCRE_UCHAR16 to a 16 bit data type in
 272 pcre.h(.in) and disable (comment out) this message. */
 273 #error Warning: PCRE_UCHAR16 is not a 16 bit data type.
 274 #endif
 275
 276 typedef pcre_uint16 pcre_uchar;
 277 #define UCHAR_SHIFT (1)
 278 #define IN_UCHARS(x) ((x) << UCHAR_SHIFT)
 279 #define MAX_255(c) ((c) <= 255u)
 280 #define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
 281
 282 #elif defined COMPILE_PCRE32
 283
 284 typedef pcre_uint32 pcre_uchar;
 285 #define UCHAR_SHIFT (2)
 286 #define IN_UCHARS(x) ((x) << UCHAR_SHIFT)
 287 #define MAX_255(c) ((c) <= 255u)
 288 #define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
 289
 290 #else
 291 #error Unsupported compiling mode
 292 #endif /* COMPILE_PCRE[8|16|32] */
 293
 294 /* This is an unsigned int value that no character can ever have. UTF-8
 295 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
 296 0x0010ffff). */
 297
 298 #define NOTACHAR 0xffffffff
 299
 300 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
 301 "any" and "anycrlf" at present). The following macros are used to package up
 302 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
 303 modules to indicate in which datablock the parameters exist, and what the
 304 start/end of string field names are. */
 305
 306 #define NLTYPE_FIXED    0     /* Newline is a fixed length string */
 307 #define NLTYPE_ANY      1     /* Newline is any Unicode line ending */
 308 #define NLTYPE_ANYCRLF  2     /* Newline is CR, LF, or CRLF */
 309
 310 /* This macro checks for a newline at the given position */
 311
 312 #define IS_NEWLINE(p) \
 313   ((NLBLOCK->nltype != NLTYPE_FIXED)? \
 314     ((p) < NLBLOCK->PSEND && \
 315      PRIV(is_newline)((p), NLBLOCK->nltype, NLBLOCK->PSEND, \
 316        &(NLBLOCK->nllen), utf)) \
 317     : \
 318     ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
 319      UCHAR21TEST(p) == NLBLOCK->nl[0] && \
 320      (NLBLOCK->nllen == 1 || UCHAR21TEST(p+1) == NLBLOCK->nl[1])       \
 321     ) \
 322   )
 323
 324 /* This macro checks for a newline immediately preceding the given position */
 325
 326 #define WAS_NEWLINE(p) \
 327   ((NLBLOCK->nltype != NLTYPE_FIXED)? \
 328     ((p) > NLBLOCK->PSSTART && \
 329      PRIV(was_newline)((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
 330        &(NLBLOCK->nllen), utf)) \
 331     : \
 332     ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
 333      UCHAR21TEST(p - NLBLOCK->nllen) == NLBLOCK->nl[0] &&              \
 334      (NLBLOCK->nllen == 1 || UCHAR21TEST(p - NLBLOCK->nllen + 1) == NLBLOCK->nl[1]) \
 335     ) \
 336   )
 337
 338 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
 339 with a custom type. This makes it possible, for example, to allow pcre_exec()
 340 to process subject strings that are discontinuous by using a smart pointer
 341 class. It must always be possible to inspect all of the subject string in
 342 pcre_exec() because of the way it backtracks. Two macros are required in the
 343 normal case, for sign-unspecified and unsigned char pointers. The former is
 344 used for the external interface and appears in pcre.h, which is why its name
 345 must begin with PCRE_. */
 346
 347 #ifdef CUSTOM_SUBJECT_PTR
 348 #define PCRE_PUCHAR CUSTOM_SUBJECT_PTR
 349 #else
 350 #define PCRE_PUCHAR const pcre_uchar *
 351 #endif
 352
 353 /* Include the public PCRE header and the definitions of UCP character property
 354 values. */
 355
 356 #include "pcre.h"
 357 #include "ucp.h"
 358
 359 #ifdef COMPILE_PCRE32
 360 /* Assert that the public PCRE_UCHAR32 is a 32-bit type */
 361 typedef int __assert_pcre_uchar32_size[sizeof(PCRE_UCHAR32) == 4 ? 1 : -1];
 362 #endif
 363
 364 /* When compiling for use with the Virtual Pascal compiler, these functions
 365 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
 366 option on the command line. */
 367
 368 #ifdef VPCOMPAT
 369 #define strlen(s)        _strlen(s)
 370 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
 371 #define memcmp(s,c,n)    _memcmp(s,c,n)
 372 #define memcpy(d,s,n)    _memcpy(d,s,n)
 373 #define memmove(d,s,n)   _memmove(d,s,n)
 374 #define memset(s,c,n)    _memset(s,c,n)
 375 #else  /* VPCOMPAT */
 376
 377 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
 378 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
 379 is set. Otherwise, include an emulating function for those systems that have
 380 neither (there some non-Unix environments where this is the case). */
 381
 382 #ifndef HAVE_MEMMOVE
 383 #undef  memmove        /* some systems may have a macro */
 384 #ifdef HAVE_BCOPY
 385 #define memmove(a, b, c) bcopy(b, a, c)
 386 #else  /* HAVE_BCOPY */
 387 static void *
 388 pcre_memmove(void *d, const void *s, size_t n)
 389 {
 390 size_t i;
 391 unsigned char *dest = (unsigned char *)d;
 392 const unsigned char *src = (const unsigned char *)s;
 393 if (dest > src)
 394   {
 395   dest += n;
 396   src += n;
 397   for (i = 0; i < n; ++i) *(--dest) = *(--src);
 398   return (void *)dest;
 399   }
 400 else
 401   {
 402   for (i = 0; i < n; ++i) *dest++ = *src++;
 403   return (void *)(dest - n);
 404   }
 405 }
 406 #define memmove(a, b, c) pcre_memmove(a, b, c)
 407 #endif   /* not HAVE_BCOPY */
 408 #endif   /* not HAVE_MEMMOVE */
 409 #endif   /* not VPCOMPAT */
 410
 411
 412 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
 413 in big-endian order) by default. These are used, for example, to link from the
 414 start of a subpattern to its alternatives and its end. The use of 2 bytes per
 415 offset limits the size of the compiled regex to around 64K, which is big enough
 416 for almost everybody. However, I received a request for an even bigger limit.
 417 For this reason, and also to make the code easier to maintain, the storing and
 418 loading of offsets from the byte string is now handled by the macros that are
 419 defined here.
 420
 421 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
 422 the config.h file, but can be overridden by using -D on the command line. This
 423 is automated on Unix systems via the "configure" command. */
 424
 425 #if defined COMPILE_PCRE8
 426
 427 #if LINK_SIZE == 2
 428
 429 #define PUT(a,n,d)   \
 430   (a[n] = (d) >> 8), \
 431   (a[(n)+1] = (d) & 255)
 432
 433 #define GET(a,n) \
 434   (((a)[n] << 8) | (a)[(n)+1])
 435
 436 #define MAX_PATTERN_SIZE (1 << 16)
 437
 438
 439 #elif LINK_SIZE == 3
 440
 441 #define PUT(a,n,d)       \
 442   (a[n] = (d) >> 16),    \
 443   (a[(n)+1] = (d) >> 8), \
 444   (a[(n)+2] = (d) & 255)
 445
 446 #define GET(a,n) \
 447   (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
 448
 449 #define MAX_PATTERN_SIZE (1 << 24)
 450
 451
 452 #elif LINK_SIZE == 4
 453
 454 #define PUT(a,n,d)        \
 455   (a[n] = (d) >> 24),     \
 456   (a[(n)+1] = (d) >> 16), \
 457   (a[(n)+2] = (d) >> 8),  \
 458   (a[(n)+3] = (d) & 255)
 459
 460 #define GET(a,n) \
 461   (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
 462
 463 /* Keep it positive */
 464 #define MAX_PATTERN_SIZE (1 << 30)
 465
 466 #else
 467 #error LINK_SIZE must be either 2, 3, or 4
 468 #endif
 469
 470 #elif defined COMPILE_PCRE16
 471
 472 #if LINK_SIZE == 2
 473
 474 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
 475 #undef LINK_SIZE
 476 #define LINK_SIZE 1
 477
 478 #define PUT(a,n,d)   \
 479   (a[n] = (d))
 480
 481 #define GET(a,n) \
 482   (a[n])
 483
 484 #define MAX_PATTERN_SIZE (1 << 16)
 485
 486 #elif LINK_SIZE == 3 || LINK_SIZE == 4
 487
 488 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
 489 #undef LINK_SIZE
 490 #define LINK_SIZE 2
 491
 492 #define PUT(a,n,d)   \
 493   (a[n] = (d) >> 16), \
 494   (a[(n)+1] = (d) & 65535)
 495
 496 #define GET(a,n) \
 497   (((a)[n] << 16) | (a)[(n)+1])
 498
 499 /* Keep it positive */
 500 #define MAX_PATTERN_SIZE (1 << 30)
 501
 502 #else
 503 #error LINK_SIZE must be either 2, 3, or 4
 504 #endif
 505
 506 #elif defined COMPILE_PCRE32
 507
 508 /* Only supported LINK_SIZE is 4 */
 509 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
 510 #undef LINK_SIZE
 511 #define LINK_SIZE 1
 512
 513 #define PUT(a,n,d)   \
 514   (a[n] = (d))
 515
 516 #define GET(a,n) \
 517   (a[n])
 518
 519 /* Keep it positive */
 520 #define MAX_PATTERN_SIZE (1 << 30)
 521
 522 #else
 523 #error Unsupported compiling mode
 524 #endif /* COMPILE_PCRE[8|16|32] */
 525
 526 /* Convenience macro defined in terms of the others */
 527
 528 #define PUTINC(a,n,d)   PUT(a,n,d), a += LINK_SIZE
 529
 530
 531 /* PCRE uses some other 2-byte quantities that do not change when the size of
 532 offsets changes. There are used for repeat counts and for other things such as
 533 capturing parenthesis numbers in back references. */
 534
 535 #if defined COMPILE_PCRE8
 536
 537 #define IMM2_SIZE 2
 538
 539 #define PUT2(a,n,d)   \
 540   a[n] = (d) >> 8; \
 541   a[(n)+1] = (d) & 255
 542
 543 /* For reasons that I do not understand, the expression in this GET2 macro is
 544 treated by gcc as a signed expression, even when a is declared as unsigned. It
 545 seems that any kind of arithmetic results in a signed value. */
 546
 547 #define GET2(a,n) \
 548   (unsigned int)(((a)[n] << 8) | (a)[(n)+1])
 549
 550 #elif defined COMPILE_PCRE16
 551
 552 #define IMM2_SIZE 1
 553
 554 #define PUT2(a,n,d)   \
 555    a[n] = d
 556
 557 #define GET2(a,n) \
 558    a[n]
 559
 560 #elif defined COMPILE_PCRE32
 561
 562 #define IMM2_SIZE 1
 563
 564 #define PUT2(a,n,d)   \
 565    a[n] = d
 566
 567 #define GET2(a,n) \
 568    a[n]
 569
 570 #else
 571 #error Unsupported compiling mode
 572 #endif /* COMPILE_PCRE[8|16|32] */
 573
 574 #define PUT2INC(a,n,d)  PUT2(a,n,d), a += IMM2_SIZE
 575
 576 /* The maximum length of a MARK name is currently one data unit; it may be
 577 changed in future to be a fixed number of bytes or to depend on LINK_SIZE. */
 578
 579 #if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
 580 #define MAX_MARK ((1u << 16) - 1)
 581 #else
 582 #define MAX_MARK ((1u << 8) - 1)
 583 #endif
 584
 585 /* There is a proposed future special "UTF-21" mode, in which only the lowest
 586 21 bits of a 32-bit character are interpreted as UTF, with the remaining 11
 587 high-order bits available to the application for other uses. In preparation for
 588 the future implementation of this mode, there are macros that load a data item
 589 and, if in this special mode, mask it to 21 bits. These macros all have names
 590 starting with UCHAR21. In all other modes, including the normal 32-bit
 591 library, the macros all have the same simple definitions. When the new mode is
 592 implemented, it is expected that these definitions will be varied appropriately
 593 using #ifdef when compiling the library that supports the special mode. */
 594
 595 #define UCHAR21(eptr)        (*(eptr))
 596 #define UCHAR21TEST(eptr)    (*(eptr))
 597 #define UCHAR21INC(eptr)     (*(eptr)++)
 598 #define UCHAR21INCTEST(eptr) (*(eptr)++)
 599
 600 /* When UTF encoding is being used, a character is no longer just a single
 601 byte in 8-bit mode or a single short in 16-bit mode. The macros for character
 602 handling generate simple sequences when used in the basic mode, and more
 603 complicated ones for UTF characters. GETCHARLENTEST and other macros are not
 604 used when UTF is not supported. To make sure they can never even appear when
 605 UTF support is omitted, we don't even define them. */
 606
 607 #ifndef SUPPORT_UTF
 608
 609 /* #define MAX_VALUE_FOR_SINGLE_CHAR */
 610 /* #define HAS_EXTRALEN(c) */
 611 /* #define GET_EXTRALEN(c) */
 612 /* #define NOT_FIRSTCHAR(c) */
 613 #define GETCHAR(c, eptr) c = *eptr;
 614 #define GETCHARTEST(c, eptr) c = *eptr;
 615 #define GETCHARINC(c, eptr) c = *eptr++;
 616 #define GETCHARINCTEST(c, eptr) c = *eptr++;
 617 #define GETCHARLEN(c, eptr, len) c = *eptr;
 618 /* #define GETCHARLENTEST(c, eptr, len) */
 619 /* #define BACKCHAR(eptr) */
 620 /* #define FORWARDCHAR(eptr) */
 621 /* #define ACROSSCHAR(condition, eptr, action) */
 622
 623 #else   /* SUPPORT_UTF */
 624
 625 /* Tests whether the code point needs extra characters to decode. */
 626
 627 #define HASUTF8EXTRALEN(c) ((c) >= 0xc0)
 628
 629 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
 630 advancing the pointer. */
 631
 632 #define GETUTF8(c, eptr) \
 633     { \
 634     if ((c & 0x20) == 0) \
 635       c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
 636     else if ((c & 0x10) == 0) \
 637       c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
 638     else if ((c & 0x08) == 0) \
 639       c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
 640       ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
 641     else if ((c & 0x04) == 0) \
 642       c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
 643           ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
 644           (eptr[4] & 0x3f); \
 645     else \
 646       c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
 647           ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
 648           ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
 649     }
 650
 651 /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
 652 the pointer. */
 653
 654 #define GETUTF8INC(c, eptr) \
 655     { \
 656     if ((c & 0x20) == 0) \
 657       c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
 658     else if ((c & 0x10) == 0) \
 659       { \
 660       c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
 661       eptr += 2; \
 662       } \
 663     else if ((c & 0x08) == 0) \
 664       { \
 665       c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
 666           ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
 667       eptr += 3; \
 668       } \
 669     else if ((c & 0x04) == 0) \
 670       { \
 671       c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
 672           ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
 673           (eptr[3] & 0x3f); \
 674       eptr += 4; \
 675       } \
 676     else \
 677       { \
 678       c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
 679           ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
 680           ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
 681       eptr += 5; \
 682       } \
 683     }
 684
 685 #if defined COMPILE_PCRE8
 686
 687 /* These macros were originally written in the form of loops that used data
 688 from the tables whose names start with PRIV(utf8_table). They were rewritten by
 689 a user so as not to use loops, because in some environments this gives a
 690 significant performance advantage, and it seems never to do any harm. */
 691
 692 /* Tells the biggest code point which can be encoded as a single character. */
 693
 694 #define MAX_VALUE_FOR_SINGLE_CHAR 127
 695
 696 /* Tests whether the code point needs extra characters to decode. */
 697
 698 #define HAS_EXTRALEN(c) ((c) >= 0xc0)
 699
 700 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
 701 Otherwise it has an undefined behaviour. */
 702
 703 #define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
 704
 705 /* Returns TRUE, if the given character is not the first character
 706 of a UTF sequence. */
 707
 708 #define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
 709
 710 /* Get the next UTF-8 character, not advancing the pointer. This is called when
 711 we know we are in UTF-8 mode. */
 712
 713 #define GETCHAR(c, eptr) \
 714   c = *eptr; \
 715   if (c >= 0xc0) GETUTF8(c, eptr);
 716
 717 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
 718 pointer. */
 719
 720 #define GETCHARTEST(c, eptr) \
 721   c = *eptr; \
 722   if (utf && c >= 0xc0) GETUTF8(c, eptr);
 723
 724 /* Get the next UTF-8 character, advancing the pointer. This is called when we
 725 know we are in UTF-8 mode. */
 726
 727 #define GETCHARINC(c, eptr) \
 728   c = *eptr++; \
 729   if (c >= 0xc0) GETUTF8INC(c, eptr);
 730
 731 /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
 732 This is called when we don't know if we are in UTF-8 mode. */
 733
 734 #define GETCHARINCTEST(c, eptr) \
 735   c = *eptr++; \
 736   if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
 737
 738 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
 739 advancing the pointer, incrementing the length. */
 740
 741 #define GETUTF8LEN(c, eptr, len) \
 742     { \
 743     if ((c & 0x20) == 0) \
 744       { \
 745       c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
 746       len++; \
 747       } \
 748     else if ((c & 0x10)  == 0) \
 749       { \
 750       c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
 751       len += 2; \
 752       } \
 753     else if ((c & 0x08)  == 0) \
 754       {\
 755       c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
 756           ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
 757       len += 3; \
 758       } \
 759     else if ((c & 0x04)  == 0) \
 760       { \
 761       c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
 762           ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
 763           (eptr[4] & 0x3f); \
 764       len += 4; \
 765       } \
 766     else \
 767       {\
 768       c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
 769           ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
 770           ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
 771       len += 5; \
 772       } \
 773     }
 774
 775 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
 776 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
 777
 778 #define GETCHARLEN(c, eptr, len) \
 779   c = *eptr; \
 780   if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
 781
 782 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
 783 pointer, incrementing length if there are extra bytes. This is called when we
 784 do not know if we are in UTF-8 mode. */
 785
 786 #define GETCHARLENTEST(c, eptr, len) \
 787   c = *eptr; \
 788   if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
 789
 790 /* If the pointer is not at the start of a character, move it back until
 791 it is. This is called only in UTF-8 mode - we don't put a test within the macro
 792 because almost all calls are already within a block of UTF-8 only code. */
 793
 794 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
 795
 796 /* Same as above, just in the other direction. */
 797 #define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
 798
 799 /* Same as above, but it allows a fully customizable form. */
 800 #define ACROSSCHAR(condition, eptr, action) \
 801   while((condition) && ((eptr) & 0xc0) == 0x80) action
 802
 803 #elif defined COMPILE_PCRE16
 804
 805 /* Tells the biggest code point which can be encoded as a single character. */
 806
 807 #define MAX_VALUE_FOR_SINGLE_CHAR 65535
 808
 809 /* Tests whether the code point needs extra characters to decode. */
 810
 811 #define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
 812
 813 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
 814 Otherwise it has an undefined behaviour. */
 815
 816 #define GET_EXTRALEN(c) 1
 817
 818 /* Returns TRUE, if the given character is not the first character
 819 of a UTF sequence. */
 820
 821 #define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
 822
 823 /* Base macro to pick up the low surrogate of a UTF-16 character, not
 824 advancing the pointer. */
 825
 826 #define GETUTF16(c, eptr) \
 827    { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
 828
 829 /* Get the next UTF-16 character, not advancing the pointer. This is called when
 830 we know we are in UTF-16 mode. */
 831
 832 #define GETCHAR(c, eptr) \
 833   c = *eptr; \
 834   if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
 835
 836 /* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
 837 pointer. */
 838
 839 #define GETCHARTEST(c, eptr) \
 840   c = *eptr; \
 841   if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
 842
 843 /* Base macro to pick up the low surrogate of a UTF-16 character, advancing
 844 the pointer. */
 845
 846 #define GETUTF16INC(c, eptr) \
 847    { c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
 848
 849 /* Get the next UTF-16 character, advancing the pointer. This is called when we
 850 know we are in UTF-16 mode. */
 851
 852 #define GETCHARINC(c, eptr) \
 853   c = *eptr++; \
 854   if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
 855
 856 /* Get the next character, testing for UTF-16 mode, and advancing the pointer.
 857 This is called when we don't know if we are in UTF-16 mode. */
 858
 859 #define GETCHARINCTEST(c, eptr) \
 860   c = *eptr++; \
 861   if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
 862
 863 /* Base macro to pick up the low surrogate of a UTF-16 character, not
 864 advancing the pointer, incrementing the length. */
 865
 866 #define GETUTF16LEN(c, eptr, len) \
 867    { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
 868
 869 /* Get the next UTF-16 character, not advancing the pointer, incrementing
 870 length if there is a low surrogate. This is called when we know we are in
 871 UTF-16 mode. */
 872
 873 #define GETCHARLEN(c, eptr, len) \
 874   c = *eptr; \
 875   if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
 876
 877 /* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
 878 pointer, incrementing length if there is a low surrogate. This is called when
 879 we do not know if we are in UTF-16 mode. */
 880
 881 #define GETCHARLENTEST(c, eptr, len) \
 882   c = *eptr; \
 883   if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
 884
 885 /* If the pointer is not at the start of a character, move it back until
 886 it is. This is called only in UTF-16 mode - we don't put a test within the
 887 macro because almost all calls are already within a block of UTF-16 only
 888 code. */
 889
 890 #define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
 891
 892 /* Same as above, just in the other direction. */
 893 #define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
 894
 895 /* Same as above, but it allows a fully customizable form. */
 896 #define ACROSSCHAR(condition, eptr, action) \
 897   if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
 898
 899 #elif defined COMPILE_PCRE32
 900
 901 /* These are trivial for the 32-bit library, since all UTF-32 characters fit
 902 into one pcre_uchar unit. */
 903 #define MAX_VALUE_FOR_SINGLE_CHAR (0x10ffffu)
 904 #define HAS_EXTRALEN(c) (0)
 905 #define GET_EXTRALEN(c) (0)
 906 #define NOT_FIRSTCHAR(c) (0)
 907
 908 /* Get the next UTF-32 character, not advancing the pointer. This is called when
 909 we know we are in UTF-32 mode. */
 910
 911 #define GETCHAR(c, eptr) \
 912   c = *(eptr);
 913
 914 /* Get the next UTF-32 character, testing for UTF-32 mode, and not advancing the
 915 pointer. */
 916
 917 #define GETCHARTEST(c, eptr) \
 918   c = *(eptr);
 919
 920 /* Get the next UTF-32 character, advancing the pointer. This is called when we
 921 know we are in UTF-32 mode. */
 922
 923 #define GETCHARINC(c, eptr) \
 924   c = *((eptr)++);
 925
 926 /* Get the next character, testing for UTF-32 mode, and advancing the pointer.
 927 This is called when we don't know if we are in UTF-32 mode. */
 928
 929 #define GETCHARINCTEST(c, eptr) \
 930   c = *((eptr)++);
 931
 932 /* Get the next UTF-32 character, not advancing the pointer, not incrementing
 933 length (since all UTF-32 is of length 1). This is called when we know we are in
 934 UTF-32 mode. */
 935
 936 #define GETCHARLEN(c, eptr, len) \
 937   GETCHAR(c, eptr)
 938
 939 /* Get the next UTF-32character, testing for UTF-32 mode, not advancing the
 940 pointer, not incrementing the length (since all UTF-32 is of length 1).
 941 This is called when we do not know if we are in UTF-32 mode. */
 942
 943 #define GETCHARLENTEST(c, eptr, len) \
 944   GETCHARTEST(c, eptr)
 945
 946 /* If the pointer is not at the start of a character, move it back until
 947 it is. This is called only in UTF-32 mode - we don't put a test within the
 948 macro because almost all calls are already within a block of UTF-32 only
 949 code.
 950 These are all no-ops since all UTF-32 characters fit into one pcre_uchar. */
 951
 952 #define BACKCHAR(eptr) do { } while (0)
 953
 954 /* Same as above, just in the other direction. */
 955 #define FORWARDCHAR(eptr) do { } while (0)
 956
 957 /* Same as above, but it allows a fully customizable form. */
 958 #define ACROSSCHAR(condition, eptr, action) do { } while (0)
 959
 960 #else
 961 #error Unsupported compiling mode
 962 #endif /* COMPILE_PCRE[8|16|32] */
 963
 964 #endif  /* SUPPORT_UTF */
 965
 966 /* Tests for Unicode horizontal and vertical whitespace characters must check a
 967 number of different values. Using a switch statement for this generates the
 968 fastest code (no loop, no memory access), and there are several places in the
 969 interpreter code where this happens. In order to ensure that all the case lists
 970 remain in step, we use macros so that there is only one place where the lists
 971 are defined.
 972
 973 These values are also required as lists in pcre_compile.c when processing \h,
 974 \H, \v and \V in a character class. The lists are defined in pcre_tables.c, but
 975 macros that define the values are here so that all the definitions are
 976 together. The lists must be in ascending character order, terminated by
 977 NOTACHAR (which is 0xffffffff).
 978
 979 Any changes should ensure that the various macros are kept in step with each
 980 other. NOTE: The values also appear in pcre_jit_compile.c. */
 981
 982 /* ------ ASCII/Unicode environments ------ */
 983
 984 #ifndef EBCDIC
 985
 986 #define HSPACE_LIST \
 987   CHAR_HT, CHAR_SPACE, 0xa0, \
 988   0x1680, 0x180e, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, \
 989   0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202f, 0x205f, 0x3000, \
 990   NOTACHAR
 991
 992 #define HSPACE_MULTIBYTE_CASES \
 993   case 0x1680:  /* OGHAM SPACE MARK */ \
 994   case 0x180e:  /* MONGOLIAN VOWEL SEPARATOR */ \
 995   case 0x2000:  /* EN QUAD */ \
 996   case 0x2001:  /* EM QUAD */ \
 997   case 0x2002:  /* EN SPACE */ \
 998   case 0x2003:  /* EM SPACE */ \
 999   case 0x2004:  /* THREE-PER-EM SPACE */ \
1000   case 0x2005:  /* FOUR-PER-EM SPACE */ \
1001   case 0x2006:  /* SIX-PER-EM SPACE */ \
1002   case 0x2007:  /* FIGURE SPACE */ \
1003   case 0x2008:  /* PUNCTUATION SPACE */ \
1004   case 0x2009:  /* THIN SPACE */ \
1005   case 0x200A:  /* HAIR SPACE */ \
1006   case 0x202f:  /* NARROW NO-BREAK SPACE */ \
1007   case 0x205f:  /* MEDIUM MATHEMATICAL SPACE */ \
1008   case 0x3000   /* IDEOGRAPHIC SPACE */
1009
1010 #define HSPACE_BYTE_CASES \
1011   case CHAR_HT: \
1012   case CHAR_SPACE: \
1013   case 0xa0     /* NBSP */
1014
1015 #define HSPACE_CASES \
1016   HSPACE_BYTE_CASES: \
1017   HSPACE_MULTIBYTE_CASES
1018
1019 #define VSPACE_LIST \
1020   CHAR_LF, CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, 0x2028, 0x2029, NOTACHAR
1021
1022 #define VSPACE_MULTIBYTE_CASES \
1023   case 0x2028:    /* LINE SEPARATOR */ \
1024   case 0x2029     /* PARAGRAPH SEPARATOR */
1025
1026 #define VSPACE_BYTE_CASES \
1027   case CHAR_LF: \
1028   case CHAR_VT: \
1029   case CHAR_FF: \
1030   case CHAR_CR: \
1031   case CHAR_NEL
1032
1033 #define VSPACE_CASES \
1034   VSPACE_BYTE_CASES: \
1035   VSPACE_MULTIBYTE_CASES
1036
1037 /* ------ EBCDIC environments ------ */
1038
1039 #else
1040 #define HSPACE_LIST CHAR_HT, CHAR_SPACE
1041
1042 #define HSPACE_BYTE_CASES \
1043   case CHAR_HT: \
1044   case CHAR_SPACE
1045
1046 #define HSPACE_CASES HSPACE_BYTE_CASES
1047
1048 #ifdef EBCDIC_NL25
1049 #define VSPACE_LIST \
1050   CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, CHAR_LF, NOTACHAR
1051 #else
1052 #define VSPACE_LIST \
1053   CHAR_VT, CHAR_FF, CHAR_CR, CHAR_LF, CHAR_NEL, NOTACHAR
1054 #endif
1055
1056 #define VSPACE_BYTE_CASES \
1057   case CHAR_LF: \
1058   case CHAR_VT: \
1059   case CHAR_FF: \
1060   case CHAR_CR: \
1061   case CHAR_NEL
1062
1063 #define VSPACE_CASES VSPACE_BYTE_CASES
1064 #endif  /* EBCDIC */
1065
1066 /* ------ End of whitespace macros ------ */
1067
1068
1069
1070 /* Private flags containing information about the compiled regex. They used to
1071 live at the top end of the options word, but that got almost full, so they were
1072 moved to a 16-bit flags word - which got almost full, so now they are in a
1073 32-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as the
1074 restrictions on partial matching have been lifted. It remains for backwards
1075 compatibility. */
1076
1077 #define PCRE_MODE8         0x00000001  /* compiled in 8 bit mode */
1078 #define PCRE_MODE16        0x00000002  /* compiled in 16 bit mode */
1079 #define PCRE_MODE32        0x00000004  /* compiled in 32 bit mode */
1080 #define PCRE_FIRSTSET      0x00000010  /* first_char is set */
1081 #define PCRE_FCH_CASELESS  0x00000020  /* caseless first char */
1082 #define PCRE_REQCHSET      0x00000040  /* req_byte is set */
1083 #define PCRE_RCH_CASELESS  0x00000080  /* caseless requested char */
1084 #define PCRE_STARTLINE     0x00000100  /* start after \n for multiline */
1085 #define PCRE_NOPARTIAL     0x00000200  /* can't use partial with this regex */
1086 #define PCRE_JCHANGED      0x00000400  /* j option used in regex */
1087 #define PCRE_HASCRORLF     0x00000800  /* explicit \r or \n in pattern */
1088 #define PCRE_HASTHEN       0x00001000  /* pattern contains (*THEN) */
1089 #define PCRE_MLSET         0x00002000  /* match limit set by regex */
1090 #define PCRE_RLSET         0x00004000  /* recursion limit set by regex */
1091 #define PCRE_MATCH_EMPTY   0x00008000  /* pattern can match empty string */
1092
1093 #if defined COMPILE_PCRE8
1094 #define PCRE_MODE          PCRE_MODE8
1095 #elif defined COMPILE_PCRE16
1096 #define PCRE_MODE          PCRE_MODE16
1097 #elif defined COMPILE_PCRE32
1098 #define PCRE_MODE          PCRE_MODE32
1099 #endif
1100 #define PCRE_MODE_MASK     (PCRE_MODE8 | PCRE_MODE16 | PCRE_MODE32)
1101
1102 /* Flags for the "extra" block produced by pcre_study(). */
1103
1104 #define PCRE_STUDY_MAPPED  0x0001  /* a map of starting chars exists */
1105 #define PCRE_STUDY_MINLEN  0x0002  /* a minimum length field exists */
1106
1107 /* Masks for identifying the public options that are permitted at compile
1108 time, run time, or study time, respectively. */
1109
1110 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
1111                            PCRE_NEWLINE_ANYCRLF)
1112
1113 #define PUBLIC_COMPILE_OPTIONS \
1114   (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
1115    PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
1116    PCRE_NO_AUTO_CAPTURE|PCRE_NO_AUTO_POSSESS| \
1117    PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
1118    PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
1119    PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE|PCRE_NEVER_UTF)
1120
1121 #define PUBLIC_EXEC_OPTIONS \
1122   (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
1123    PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
1124    PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
1125
1126 #define PUBLIC_DFA_EXEC_OPTIONS \
1127   (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
1128    PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
1129    PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
1130    PCRE_NO_START_OPTIMIZE)
1131
1132 #define PUBLIC_STUDY_OPTIONS \
1133    (PCRE_STUDY_JIT_COMPILE|PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE| \
1134     PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE|PCRE_STUDY_EXTRA_NEEDED)
1135
1136 #define PUBLIC_JIT_EXEC_OPTIONS \
1137    (PCRE_NO_UTF8_CHECK|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|\
1138     PCRE_NOTEMPTY_ATSTART|PCRE_PARTIAL_SOFT|PCRE_PARTIAL_HARD)
1139
1140 /* Magic number to provide a small check against being handed junk. */
1141
1142 #define MAGIC_NUMBER  0x50435245UL   /* 'PCRE' */
1143
1144 /* This variable is used to detect a loaded regular expression
1145 in different endianness. */
1146
1147 #define REVERSED_MAGIC_NUMBER  0x45524350UL   /* 'ERCP' */
1148
1149 /* The maximum remaining length of subject we are prepared to search for a
1150 req_byte match. */
1151
1152 #define REQ_BYTE_MAX 1000
1153
1154 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
1155 environments where these macros are defined elsewhere. Unfortunately, there
1156 is no way to do the same for the typedef. */
1157
1158 typedef int BOOL;
1159
1160 #ifndef FALSE
1161 #define FALSE   0
1162 #define TRUE    1
1163 #endif
1164
1165 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
1166 character constants like '*' because the compiler would emit their EBCDIC code,
1167 which is different from their ASCII/UTF-8 code. Instead we define macros for
1168 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
1169 is enabled. When UTF-8 support is not enabled, the definitions use character
1170 literals. Both character and string versions of each character are needed, and
1171 there are some longer strings as well.
1172
1173 This means that, on EBCDIC platforms, the PCRE library can handle either
1174 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
1175 would need different lookups depending on whether PCRE_UTF8 was set or not.
1176 This would make it impossible to use characters in switch/case statements,
1177 which would reduce performance. For a theoretical use (which nobody has asked
1178 for) in a minority area (EBCDIC platforms), this is not sensible. Any
1179 application that did need both could compile two versions of the library, using
1180 macros to give the functions distinct names. */
1181
1182 #ifndef SUPPORT_UTF
1183
1184 /* UTF-8 support is not enabled; use the platform-dependent character literals
1185 so that PCRE works in both ASCII and EBCDIC environments, but only in non-UTF
1186 mode. Newline characters are problematic in EBCDIC. Though it has CR and LF
1187 characters, a common practice has been to use its NL (0x15) character as the
1188 line terminator in C-like processing environments. However, sometimes the LF
1189 (0x25) character is used instead, according to this Unicode document:
1190
1191 http://unicode.org/standard/reports/tr13/tr13-5.html
1192
1193 PCRE defaults EBCDIC NL to 0x15, but has a build-time option to select 0x25
1194 instead. Whichever is *not* chosen is defined as NEL.
1195
1196 In both ASCII and EBCDIC environments, CHAR_NL and CHAR_LF are synonyms for the
1197 same code point. */
1198
1199 #ifdef EBCDIC
1200
1201 #ifndef EBCDIC_NL25
1202 #define CHAR_NL                     '\x15'
1203 #define CHAR_NEL                    '\x25'
1204 #define STR_NL                      "\x15"
1205 #define STR_NEL                     "\x25"
1206 #else
1207 #define CHAR_NL                     '\x25'
1208 #define CHAR_NEL                    '\x15'
1209 #define STR_NL                      "\x25"
1210 #define STR_NEL                     "\x15"
1211 #endif
1212
1213 #define CHAR_LF                     CHAR_NL
1214 #define STR_LF                      STR_NL
1215
1216 #define CHAR_ESC                    '\047'
1217 #define CHAR_DEL                    '\007'
1218 #define STR_ESC                     "\047"
1219 #define STR_DEL                     "\007"
1220
1221 #else  /* Not EBCDIC */
1222
1223 /* In ASCII/Unicode, linefeed is '\n' and we equate this to NL for
1224 compatibility. NEL is the Unicode newline character; make sure it is
1225 a positive value. */
1226
1227 #define CHAR_LF                     '\n'
1228 #define CHAR_NL                     CHAR_LF
1229 #define CHAR_NEL                    ((unsigned char)'\x85')
1230 #define CHAR_ESC                    '\033'
1231 #define CHAR_DEL                    '\177'
1232
1233 #define STR_LF                      "\n"
1234 #define STR_NL                      STR_LF
1235 #define STR_NEL                     "\x85"
1236 #define STR_ESC                     "\033"
1237 #define STR_DEL                     "\177"
1238
1239 #endif  /* EBCDIC */
1240
1241 /* The remaining definitions work in both environments. */
1242
1243 #define CHAR_NULL                   '\0'
1244 #define CHAR_HT                     '\t'
1245 #define CHAR_VT                     '\v'
1246 #define CHAR_FF                     '\f'
1247 #define CHAR_CR                     '\r'
1248 #define CHAR_BS                     '\b'
1249 #define CHAR_BEL                    '\a'
1250
1251 #define CHAR_SPACE                  ' '
1252 #define CHAR_EXCLAMATION_MARK       '!'
1253 #define CHAR_QUOTATION_MARK         '"'
1254 #define CHAR_NUMBER_SIGN            '#'
1255 #define CHAR_DOLLAR_SIGN            '$'
1256 #define CHAR_PERCENT_SIGN           '%'
1257 #define CHAR_AMPERSAND              '&'
1258 #define CHAR_APOSTROPHE             '\''
1259 #define CHAR_LEFT_PARENTHESIS       '('
1260 #define CHAR_RIGHT_PARENTHESIS      ')'
1261 #define CHAR_ASTERISK               '*'
1262 #define CHAR_PLUS                   '+'
1263 #define CHAR_COMMA                  ','
1264 #define CHAR_MINUS                  '-'
1265 #define CHAR_DOT                    '.'
1266 #define CHAR_SLASH                  '/'
1267 #define CHAR_0                      '0'
1268 #define CHAR_1                      '1'
1269 #define CHAR_2                      '2'
1270 #define CHAR_3                      '3'
1271 #define CHAR_4                      '4'
1272 #define CHAR_5                      '5'
1273 #define CHAR_6                      '6'
1274 #define CHAR_7                      '7'
1275 #define CHAR_8                      '8'
1276 #define CHAR_9                      '9'
1277 #define CHAR_COLON                  ':'
1278 #define CHAR_SEMICOLON              ';'
1279 #define CHAR_LESS_THAN_SIGN         '<'
1280 #define CHAR_EQUALS_SIGN            '='
1281 #define CHAR_GREATER_THAN_SIGN      '>'
1282 #define CHAR_QUESTION_MARK          '?'
1283 #define CHAR_COMMERCIAL_AT          '@'
1284 #define CHAR_A                      'A'
1285 #define CHAR_B                      'B'
1286 #define CHAR_C                      'C'
1287 #define CHAR_D                      'D'
1288 #define CHAR_E                      'E'
1289 #define CHAR_F                      'F'
1290 #define CHAR_G                      'G'
1291 #define CHAR_H                      'H'
1292 #define CHAR_I                      'I'
1293 #define CHAR_J                      'J'
1294 #define CHAR_K                      'K'
1295 #define CHAR_L                      'L'
1296 #define CHAR_M                      'M'
1297 #define CHAR_N                      'N'
1298 #define CHAR_O                      'O'
1299 #define CHAR_P                      'P'
1300 #define CHAR_Q                      'Q'
1301 #define CHAR_R                      'R'
1302 #define CHAR_S                      'S'
1303 #define CHAR_T                      'T'
1304 #define CHAR_U                      'U'
1305 #define CHAR_V                      'V'
1306 #define CHAR_W                      'W'
1307 #define CHAR_X                      'X'
1308 #define CHAR_Y                      'Y'
1309 #define CHAR_Z                      'Z'
1310 #define CHAR_LEFT_SQUARE_BRACKET    '['
1311 #define CHAR_BACKSLASH              '\\'
1312 #define CHAR_RIGHT_SQUARE_BRACKET   ']'
1313 #define CHAR_CIRCUMFLEX_ACCENT      '^'
1314 #define CHAR_UNDERSCORE             '_'
1315 #define CHAR_GRAVE_ACCENT           '`'
1316 #define CHAR_a                      'a'
1317 #define CHAR_b                      'b'
1318 #define CHAR_c                      'c'
1319 #define CHAR_d                      'd'
1320 #define CHAR_e                      'e'
1321 #define CHAR_f                      'f'
1322 #define CHAR_g                      'g'
1323 #define CHAR_h                      'h'
1324 #define CHAR_i                      'i'
1325 #define CHAR_j                      'j'
1326 #define CHAR_k                      'k'
1327 #define CHAR_l                      'l'
1328 #define CHAR_m                      'm'
1329 #define CHAR_n                      'n'
1330 #define CHAR_o                      'o'
1331 #define CHAR_p                      'p'
1332 #define CHAR_q                      'q'
1333 #define CHAR_r                      'r'
1334 #define CHAR_s                      's'
1335 #define CHAR_t                      't'
1336 #define CHAR_u                      'u'
1337 #define CHAR_v                      'v'
1338 #define CHAR_w                      'w'
1339 #define CHAR_x                      'x'
1340 #define CHAR_y                      'y'
1341 #define CHAR_z                      'z'
1342 #define CHAR_LEFT_CURLY_BRACKET     '{'
1343 #define CHAR_VERTICAL_LINE          '|'
1344 #define CHAR_RIGHT_CURLY_BRACKET    '}'
1345 #define CHAR_TILDE                  '~'
1346
1347 #define STR_HT                      "\t"
1348 #define STR_VT                      "\v"
1349 #define STR_FF                      "\f"
1350 #define STR_CR                      "\r"
1351 #define STR_BS                      "\b"
1352 #define STR_BEL                     "\a"
1353
1354 #define STR_SPACE                   " "
1355 #define STR_EXCLAMATION_MARK        "!"
1356 #define STR_QUOTATION_MARK          "\""
1357 #define STR_NUMBER_SIGN             "#"
1358 #define STR_DOLLAR_SIGN             "$"
1359 #define STR_PERCENT_SIGN            "%"
1360 #define STR_AMPERSAND               "&"
1361 #define STR_APOSTROPHE              "'"
1362 #define STR_LEFT_PARENTHESIS        "("
1363 #define STR_RIGHT_PARENTHESIS       ")"
1364 #define STR_ASTERISK                "*"
1365 #define STR_PLUS                    "+"
1366 #define STR_COMMA                   ","
1367 #define STR_MINUS                   "-"
1368 #define STR_DOT                     "."
1369 #define STR_SLASH                   "/"
1370 #define STR_0                       "0"
1371 #define STR_1                       "1"
1372 #define STR_2                       "2"
1373 #define STR_3                       "3"
1374 #define STR_4                       "4"
1375 #define STR_5                       "5"
1376 #define STR_6                       "6"
1377 #define STR_7                       "7"
1378 #define STR_8                       "8"
1379 #define STR_9                       "9"
1380 #define STR_COLON                   ":"
1381 #define STR_SEMICOLON               ";"
1382 #define STR_LESS_THAN_SIGN          "<"
1383 #define STR_EQUALS_SIGN             "="
1384 #define STR_GREATER_THAN_SIGN       ">"
1385 #define STR_QUESTION_MARK           "?"
1386 #define STR_COMMERCIAL_AT           "@"
1387 #define STR_A                       "A"
1388 #define STR_B                       "B"
1389 #define STR_C                       "C"
1390 #define STR_D                       "D"
1391 #define STR_E                       "E"
1392 #define STR_F                       "F"
1393 #define STR_G                       "G"
1394 #define STR_H                       "H"
1395 #define STR_I                       "I"
1396 #define STR_J                       "J"
1397 #define STR_K                       "K"
1398 #define STR_L                       "L"
1399 #define STR_M                       "M"
1400 #define STR_N                       "N"
1401 #define STR_O                       "O"
1402 #define STR_P                       "P"
1403 #define STR_Q                       "Q"
1404 #define STR_R                       "R"
1405 #define STR_S                       "S"
1406 #define STR_T                       "T"
1407 #define STR_U                       "U"
1408 #define STR_V                       "V"
1409 #define STR_W                       "W"
1410 #define STR_X                       "X"
1411 #define STR_Y                       "Y"
1412 #define STR_Z                       "Z"
1413 #define STR_LEFT_SQUARE_BRACKET     "["
1414 #define STR_BACKSLASH               "\\"
1415 #define STR_RIGHT_SQUARE_BRACKET    "]"
1416 #define STR_CIRCUMFLEX_ACCENT       "^"
1417 #define STR_UNDERSCORE              "_"
1418 #define STR_GRAVE_ACCENT            "`"
1419 #define STR_a                       "a"
1420 #define STR_b                       "b"
1421 #define STR_c                       "c"
1422 #define STR_d                       "d"
1423 #define STR_e                       "e"
1424 #define STR_f                       "f"
1425 #define STR_g                       "g"
1426 #define STR_h                       "h"
1427 #define STR_i                       "i"
1428 #define STR_j                       "j"
1429 #define STR_k                       "k"
1430 #define STR_l                       "l"
1431 #define STR_m                       "m"
1432 #define STR_n                       "n"
1433 #define STR_o                       "o"
1434 #define STR_p                       "p"
1435 #define STR_q                       "q"
1436 #define STR_r                       "r"
1437 #define STR_s                       "s"
1438 #define STR_t                       "t"
1439 #define STR_u                       "u"
1440 #define STR_v                       "v"
1441 #define STR_w                       "w"
1442 #define STR_x                       "x"
1443 #define STR_y                       "y"
1444 #define STR_z                       "z"
1445 #define STR_LEFT_CURLY_BRACKET      "{"
1446 #define STR_VERTICAL_LINE           "|"
1447 #define STR_RIGHT_CURLY_BRACKET     "}"
1448 #define STR_TILDE                   "~"
1449
1450 #define STRING_ACCEPT0              "ACCEPT\0"
1451 #define STRING_COMMIT0              "COMMIT\0"
1452 #define STRING_F0                   "F\0"
1453 #define STRING_FAIL0                "FAIL\0"
1454 #define STRING_MARK0                "MARK\0"
1455 #define STRING_PRUNE0               "PRUNE\0"
1456 #define STRING_SKIP0                "SKIP\0"
1457 #define STRING_THEN                 "THEN"
1458
1459 #define STRING_alpha0               "alpha\0"
1460 #define STRING_lower0               "lower\0"
1461 #define STRING_upper0               "upper\0"
1462 #define STRING_alnum0               "alnum\0"
1463 #define STRING_ascii0               "ascii\0"
1464 #define STRING_blank0               "blank\0"
1465 #define STRING_cntrl0               "cntrl\0"
1466 #define STRING_digit0               "digit\0"
1467 #define STRING_graph0               "graph\0"
1468 #define STRING_print0               "print\0"
1469 #define STRING_punct0               "punct\0"
1470 #define STRING_space0               "space\0"
1471 #define STRING_word0                "word\0"
1472 #define STRING_xdigit               "xdigit"
1473
1474 #define STRING_DEFINE               "DEFINE"
1475 #define STRING_WEIRD_STARTWORD      "[:<:]]"
1476 #define STRING_WEIRD_ENDWORD        "[:>:]]"
1477
1478 #define STRING_CR_RIGHTPAR              "CR)"
1479 #define STRING_LF_RIGHTPAR              "LF)"
1480 #define STRING_CRLF_RIGHTPAR            "CRLF)"
1481 #define STRING_ANY_RIGHTPAR             "ANY)"
1482 #define STRING_ANYCRLF_RIGHTPAR         "ANYCRLF)"
1483 #define STRING_BSR_ANYCRLF_RIGHTPAR     "BSR_ANYCRLF)"
1484 #define STRING_BSR_UNICODE_RIGHTPAR     "BSR_UNICODE)"
1485 #define STRING_UTF8_RIGHTPAR            "UTF8)"
1486 #define STRING_UTF16_RIGHTPAR           "UTF16)"
1487 #define STRING_UTF32_RIGHTPAR           "UTF32)"
1488 #define STRING_UTF_RIGHTPAR             "UTF)"
1489 #define STRING_UCP_RIGHTPAR             "UCP)"
1490 #define STRING_NO_AUTO_POSSESS_RIGHTPAR "NO_AUTO_POSSESS)"
1491 #define STRING_NO_START_OPT_RIGHTPAR    "NO_START_OPT)"
1492 #define STRING_LIMIT_MATCH_EQ           "LIMIT_MATCH="
1493 #define STRING_LIMIT_RECURSION_EQ       "LIMIT_RECURSION="
1494
1495 #else  /* SUPPORT_UTF */
1496
1497 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
1498 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
1499 only. */
1500
1501 #define CHAR_HT                     '\011'
1502 #define CHAR_VT                     '\013'
1503 #define CHAR_FF                     '\014'
1504 #define CHAR_CR                     '\015'
1505 #define CHAR_LF                     '\012'
1506 #define CHAR_NL                     CHAR_LF
1507 #define CHAR_NEL                    ((unsigned char)'\x85')
1508 #define CHAR_BS                     '\010'
1509 #define CHAR_BEL                    '\007'
1510 #define CHAR_ESC                    '\033'
1511 #define CHAR_DEL                    '\177'
1512
1513 #define CHAR_NULL                   '\0'
1514 #define CHAR_SPACE                  '\040'
1515 #define CHAR_EXCLAMATION_MARK       '\041'
1516 #define CHAR_QUOTATION_MARK         '\042'
1517 #define CHAR_NUMBER_SIGN            '\043'
1518 #define CHAR_DOLLAR_SIGN            '\044'
1519 #define CHAR_PERCENT_SIGN           '\045'
1520 #define CHAR_AMPERSAND              '\046'
1521 #define CHAR_APOSTROPHE             '\047'
1522 #define CHAR_LEFT_PARENTHESIS       '\050'
1523 #define CHAR_RIGHT_PARENTHESIS      '\051'
1524 #define CHAR_ASTERISK               '\052'
1525 #define CHAR_PLUS                   '\053'
1526 #define CHAR_COMMA                  '\054'
1527 #define CHAR_MINUS                  '\055'
1528 #define CHAR_DOT                    '\056'
1529 #define CHAR_SLASH                  '\057'
1530 #define CHAR_0                      '\060'
1531 #define CHAR_1                      '\061'
1532 #define CHAR_2                      '\062'
1533 #define CHAR_3                      '\063'
1534 #define CHAR_4                      '\064'
1535 #define CHAR_5                      '\065'
1536 #define CHAR_6                      '\066'
1537 #define CHAR_7                      '\067'
1538 #define CHAR_8                      '\070'
1539 #define CHAR_9                      '\071'
1540 #define CHAR_COLON                  '\072'
1541 #define CHAR_SEMICOLON              '\073'
1542 #define CHAR_LESS_THAN_SIGN         '\074'
1543 #define CHAR_EQUALS_SIGN            '\075'
1544 #define CHAR_GREATER_THAN_SIGN      '\076'
1545 #define CHAR_QUESTION_MARK          '\077'
1546 #define CHAR_COMMERCIAL_AT          '\100'
1547 #define CHAR_A                      '\101'
1548 #define CHAR_B                      '\102'
1549 #define CHAR_C                      '\103'
1550 #define CHAR_D                      '\104'
1551 #define CHAR_E                      '\105'
1552 #define CHAR_F                      '\106'
1553 #define CHAR_G                      '\107'
1554 #define CHAR_H                      '\110'
1555 #define CHAR_I                      '\111'
1556 #define CHAR_J                      '\112'
1557 #define CHAR_K                      '\113'
1558 #define CHAR_L                      '\114'
1559 #define CHAR_M                      '\115'
1560 #define CHAR_N                      '\116'
1561 #define CHAR_O                      '\117'
1562 #define CHAR_P                      '\120'
1563 #define CHAR_Q                      '\121'
1564 #define CHAR_R                      '\122'
1565 #define CHAR_S                      '\123'
1566 #define CHAR_T                      '\124'
1567 #define CHAR_U                      '\125'
1568 #define CHAR_V                      '\126'
1569 #define CHAR_W                      '\127'
1570 #define CHAR_X                      '\130'
1571 #define CHAR_Y                      '\131'
1572 #define CHAR_Z                      '\132'
1573 #define CHAR_LEFT_SQUARE_BRACKET    '\133'
1574 #define CHAR_BACKSLASH              '\134'
1575 #define CHAR_RIGHT_SQUARE_BRACKET   '\135'
1576 #define CHAR_CIRCUMFLEX_ACCENT      '\136'
1577 #define CHAR_UNDERSCORE             '\137'
1578 #define CHAR_GRAVE_ACCENT           '\140'
1579 #define CHAR_a                      '\141'
1580 #define CHAR_b                      '\142'
1581 #define CHAR_c                      '\143'
1582 #define CHAR_d                      '\144'
1583 #define CHAR_e                      '\145'
1584 #define CHAR_f                      '\146'
1585 #define CHAR_g                      '\147'
1586 #define CHAR_h                      '\150'
1587 #define CHAR_i                      '\151'
1588 #define CHAR_j                      '\152'
1589 #define CHAR_k                      '\153'
1590 #define CHAR_l                      '\154'
1591 #define CHAR_m                      '\155'
1592 #define CHAR_n                      '\156'
1593 #define CHAR_o                      '\157'
1594 #define CHAR_p                      '\160'
1595 #define CHAR_q                      '\161'
1596 #define CHAR_r                      '\162'
1597 #define CHAR_s                      '\163'
1598 #define CHAR_t                      '\164'
1599 #define CHAR_u                      '\165'
1600 #define CHAR_v                      '\166'
1601 #define CHAR_w                      '\167'
1602 #define CHAR_x                      '\170'
1603 #define CHAR_y                      '\171'
1604 #define CHAR_z                      '\172'
1605 #define CHAR_LEFT_CURLY_BRACKET     '\173'
1606 #define CHAR_VERTICAL_LINE          '\174'
1607 #define CHAR_RIGHT_CURLY_BRACKET    '\175'
1608 #define CHAR_TILDE                  '\176'
1609
1610 #define STR_HT                      "\011"
1611 #define STR_VT                      "\013"
1612 #define STR_FF                      "\014"
1613 #define STR_CR                      "\015"
1614 #define STR_NL                      "\012"
1615 #define STR_BS                      "\010"
1616 #define STR_BEL                     "\007"
1617 #define STR_ESC                     "\033"
1618 #define STR_DEL                     "\177"
1619
1620 #define STR_SPACE                   "\040"
1621 #define STR_EXCLAMATION_MARK        "\041"
1622 #define STR_QUOTATION_MARK          "\042"
1623 #define STR_NUMBER_SIGN             "\043"
1624 #define STR_DOLLAR_SIGN             "\044"
1625 #define STR_PERCENT_SIGN            "\045"
1626 #define STR_AMPERSAND               "\046"
1627 #define STR_APOSTROPHE              "\047"
1628 #define STR_LEFT_PARENTHESIS        "\050"
1629 #define STR_RIGHT_PARENTHESIS       "\051"
1630 #define STR_ASTERISK                "\052"
1631 #define STR_PLUS                    "\053"
1632 #define STR_COMMA                   "\054"
1633 #define STR_MINUS                   "\055"
1634 #define STR_DOT                     "\056"
1635 #define STR_SLASH                   "\057"
1636 #define STR_0                       "\060"
1637 #define STR_1                       "\061"
1638 #define STR_2                       "\062"
1639 #define STR_3                       "\063"
1640 #define STR_4                       "\064"
1641 #define STR_5                       "\065"
1642 #define STR_6                       "\066"
1643 #define STR_7                       "\067"
1644 #define STR_8                       "\070"
1645 #define STR_9                       "\071"
1646 #define STR_COLON                   "\072"
1647 #define STR_SEMICOLON               "\073"
1648 #define STR_LESS_THAN_SIGN          "\074"
1649 #define STR_EQUALS_SIGN             "\075"
1650 #define STR_GREATER_THAN_SIGN       "\076"
1651 #define STR_QUESTION_MARK           "\077"
1652 #define STR_COMMERCIAL_AT           "\100"
1653 #define STR_A                       "\101"
1654 #define STR_B                       "\102"
1655 #define STR_C                       "\103"
1656 #define STR_D                       "\104"
1657 #define STR_E                       "\105"
1658 #define STR_F                       "\106"
1659 #define STR_G                       "\107"
1660 #define STR_H                       "\110"
1661 #define STR_I                       "\111"
1662 #define STR_J                       "\112"
1663 #define STR_K                       "\113"
1664 #define STR_L                       "\114"
1665 #define STR_M                       "\115"
1666 #define STR_N                       "\116"
1667 #define STR_O                       "\117"
1668 #define STR_P                       "\120"
1669 #define STR_Q                       "\121"
1670 #define STR_R                       "\122"
1671 #define STR_S                       "\123"
1672 #define STR_T                       "\124"
1673 #define STR_U                       "\125"
1674 #define STR_V                       "\126"
1675 #define STR_W                       "\127"
1676 #define STR_X                       "\130"
1677 #define STR_Y                       "\131"
1678 #define STR_Z                       "\132"
1679 #define STR_LEFT_SQUARE_BRACKET     "\133"
1680 #define STR_BACKSLASH               "\134"
1681 #define STR_RIGHT_SQUARE_BRACKET    "\135"
1682 #define STR_CIRCUMFLEX_ACCENT       "\136"
1683 #define STR_UNDERSCORE              "\137"
1684 #define STR_GRAVE_ACCENT            "\140"
1685 #define STR_a                       "\141"
1686 #define STR_b                       "\142"
1687 #define STR_c                       "\143"
1688 #define STR_d                       "\144"
1689 #define STR_e                       "\145"
1690 #define STR_f                       "\146"
1691 #define STR_g                       "\147"
1692 #define STR_h                       "\150"
1693 #define STR_i                       "\151"
1694 #define STR_j                       "\152"
1695 #define STR_k                       "\153"
1696 #define STR_l                       "\154"
1697 #define STR_m                       "\155"
1698 #define STR_n                       "\156"
1699 #define STR_o                       "\157"
1700 #define STR_p                       "\160"
1701 #define STR_q                       "\161"
1702 #define STR_r                       "\162"
1703 #define STR_s                       "\163"
1704 #define STR_t                       "\164"
1705 #define STR_u                       "\165"
1706 #define STR_v                       "\166"
1707 #define STR_w                       "\167"
1708 #define STR_x                       "\170"
1709 #define STR_y                       "\171"
1710 #define STR_z                       "\172"
1711 #define STR_LEFT_CURLY_BRACKET      "\173"
1712 #define STR_VERTICAL_LINE           "\174"
1713 #define STR_RIGHT_CURLY_BRACKET     "\175"
1714 #define STR_TILDE                   "\176"
1715
1716 #define STRING_ACCEPT0              STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1717 #define STRING_COMMIT0              STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1718 #define STRING_F0                   STR_F "\0"
1719 #define STRING_FAIL0                STR_F STR_A STR_I STR_L "\0"
1720 #define STRING_MARK0                STR_M STR_A STR_R STR_K "\0"
1721 #define STRING_PRUNE0               STR_P STR_R STR_U STR_N STR_E "\0"
1722 #define STRING_SKIP0                STR_S STR_K STR_I STR_P "\0"
1723 #define STRING_THEN                 STR_T STR_H STR_E STR_N
1724
1725 #define STRING_alpha0               STR_a STR_l STR_p STR_h STR_a "\0"
1726 #define STRING_lower0               STR_l STR_o STR_w STR_e STR_r "\0"
1727 #define STRING_upper0               STR_u STR_p STR_p STR_e STR_r "\0"
1728 #define STRING_alnum0               STR_a STR_l STR_n STR_u STR_m "\0"
1729 #define STRING_ascii0               STR_a STR_s STR_c STR_i STR_i "\0"
1730 #define STRING_blank0               STR_b STR_l STR_a STR_n STR_k "\0"
1731 #define STRING_cntrl0               STR_c STR_n STR_t STR_r STR_l "\0"
1732 #define STRING_digit0               STR_d STR_i STR_g STR_i STR_t "\0"
1733 #define STRING_graph0               STR_g STR_r STR_a STR_p STR_h "\0"
1734 #define STRING_print0               STR_p STR_r STR_i STR_n STR_t "\0"
1735 #define STRING_punct0               STR_p STR_u STR_n STR_c STR_t "\0"
1736 #define STRING_space0               STR_s STR_p STR_a STR_c STR_e "\0"
1737 #define STRING_word0                STR_w STR_o STR_r STR_d       "\0"
1738 #define STRING_xdigit               STR_x STR_d STR_i STR_g STR_i STR_t
1739
1740 #define STRING_DEFINE               STR_D STR_E STR_F STR_I STR_N STR_E
1741 #define STRING_WEIRD_STARTWORD      STR_LEFT_SQUARE_BRACKET STR_COLON STR_LESS_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
1742 #define STRING_WEIRD_ENDWORD        STR_LEFT_SQUARE_BRACKET STR_COLON STR_GREATER_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
1743
1744 #define STRING_CR_RIGHTPAR              STR_C STR_R STR_RIGHT_PARENTHESIS
1745 #define STRING_LF_RIGHTPAR              STR_L STR_F STR_RIGHT_PARENTHESIS
1746 #define STRING_CRLF_RIGHTPAR            STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1747 #define STRING_ANY_RIGHTPAR             STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1748 #define STRING_ANYCRLF_RIGHTPAR         STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1749 #define STRING_BSR_ANYCRLF_RIGHTPAR     STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1750 #define STRING_BSR_UNICODE_RIGHTPAR     STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
1751 #define STRING_UTF8_RIGHTPAR            STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1752 #define STRING_UTF16_RIGHTPAR           STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
1753 #define STRING_UTF32_RIGHTPAR           STR_U STR_T STR_F STR_3 STR_2 STR_RIGHT_PARENTHESIS
1754 #define STRING_UTF_RIGHTPAR             STR_U STR_T STR_F STR_RIGHT_PARENTHESIS
1755 #define STRING_UCP_RIGHTPAR             STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1756 #define STRING_NO_AUTO_POSSESS_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_A STR_U STR_T STR_O STR_UNDERSCORE STR_P STR_O STR_S STR_S STR_E STR_S STR_S STR_RIGHT_PARENTHESIS
1757 #define STRING_NO_START_OPT_RIGHTPAR    STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
1758 #define STRING_LIMIT_MATCH_EQ           STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_M STR_A STR_T STR_C STR_H STR_EQUALS_SIGN
1759 #define STRING_LIMIT_RECURSION_EQ       STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_R STR_E STR_C STR_U STR_R STR_S STR_I STR_O STR_N STR_EQUALS_SIGN
1760
1761 #endif  /* SUPPORT_UTF */
1762
1763 /* Escape items that are just an encoding of a particular data value. */
1764
1765 #ifndef ESC_e
1766 #define ESC_e CHAR_ESC
1767 #endif
1768
1769 #ifndef ESC_f
1770 #define ESC_f CHAR_FF
1771 #endif
1772
1773 #ifndef ESC_n
1774 #define ESC_n CHAR_LF
1775 #endif
1776
1777 #ifndef ESC_r
1778 #define ESC_r CHAR_CR
1779 #endif
1780
1781 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1782 (presumably because of all the others like size_t). */
1783
1784 #ifndef ESC_tee
1785 #define ESC_tee CHAR_HT
1786 #endif
1787
1788 /* Codes for different types of Unicode property */
1789
1790 #define PT_ANY        0    /* Any property - matches all chars */
1791 #define PT_LAMP       1    /* L& - the union of Lu, Ll, Lt */
1792 #define PT_GC         2    /* Specified general characteristic (e.g. L) */
1793 #define PT_PC         3    /* Specified particular characteristic (e.g. Lu) */
1794 #define PT_SC         4    /* Script (e.g. Han) */
1795 #define PT_ALNUM      5    /* Alphanumeric - the union of L and N */
1796 #define PT_SPACE      6    /* Perl space - Z plus 9,10,12,13 */
1797 #define PT_PXSPACE    7    /* POSIX space - Z plus 9,10,11,12,13 */
1798 #define PT_WORD       8    /* Word - L plus N plus underscore */
1799 #define PT_CLIST      9    /* Pseudo-property: match character list */
1800 #define PT_UCNC      10    /* Universal Character nameable character */
1801 #define PT_TABSIZE   11    /* Size of square table for autopossessify tests */
1802
1803 /* The following special properties are used only in XCLASS items, when POSIX
1804 classes are specified and PCRE_UCP is set - in other words, for Unicode
1805 handling of these classes. They are not available via the \p or \P escapes like
1806 those in the above list, and so they do not take part in the autopossessifying
1807 table. */
1808
1809 #define PT_PXGRAPH   11    /* [:graph:] - characters that mark the paper */
1810 #define PT_PXPRINT   12    /* [:print:] - [:graph:] plus non-control spaces */
1811 #define PT_PXPUNCT   13    /* [:punct:] - punctuation characters */
1812
1813 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1814 contain characters with values greater than 255. */
1815
1816 #define XCL_NOT       0x01    /* Flag: this is a negative class */
1817 #define XCL_MAP       0x02    /* Flag: a 32-byte map is present */
1818 #define XCL_HASPROP   0x04    /* Flag: property checks are present. */
1819
1820 #define XCL_END       0    /* Marks end of individual items */
1821 #define XCL_SINGLE    1    /* Single item (one multibyte char) follows */
1822 #define XCL_RANGE     2    /* A range (two multibyte chars) follows */
1823 #define XCL_PROP      3    /* Unicode property (2-byte property code follows) */
1824 #define XCL_NOTPROP   4    /* Unicode inverted property (ditto) */
1825
1826 /* These are escaped items that aren't just an encoding of a particular data
1827 value such as \n. They must have non-zero values, as check_escape() returns 0
1828 for a data character.  Also, they must appear in the same order as in the
1829 opcode definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1830 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1831 used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
1832 non-DOTALL mode, "." behaves like \N.
1833
1834 The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1835 when PCRE_UCP is set and replacement of \d etc by \p sequences is required.
1836 They must be contiguous, and remain in order so that the replacements can be
1837 looked up from a table.
1838
1839 Negative numbers are used to encode a backreference (\1, \2, \3, etc.) in
1840 check_escape(). There are two tests in the code for an escape
1841 greater than ESC_b and less than ESC_Z to detect the types that may be
1842 repeated. These are the types that consume characters. If any new escapes are
1843 put in between that don't consume a character, that code will have to change.
1844 */
1845
1846 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1847        ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1848        ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1849        ESC_E, ESC_Q, ESC_g, ESC_k,
1850        ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu };
1851
1852
1853 /********************** Opcode definitions ******************/
1854
1855 /****** NOTE NOTE NOTE ******
1856
1857 Starting from 1 (i.e. after OP_END), the values up to OP_EOD must correspond in
1858 order to the list of escapes immediately above. Furthermore, values up to
1859 OP_DOLLM must not be changed without adjusting the table called autoposstab in
1860 pcre_compile.c
1861
1862 Whenever this list is updated, the two macro definitions that follow must be
1863 updated to match. The possessification table called "opcode_possessify" in
1864 pcre_compile.c must also be updated, and also the tables called "coptable"
1865 and "poptable" in pcre_dfa_exec.c.
1866
1867 ****** NOTE NOTE NOTE ******/
1868
1869
1870 /* The values between FIRST_AUTOTAB_OP and LAST_AUTOTAB_RIGHT_OP, inclusive,
1871 are used in a table for deciding whether a repeated character type can be
1872 auto-possessified. */
1873
1874 #define FIRST_AUTOTAB_OP       OP_NOT_DIGIT
1875 #define LAST_AUTOTAB_LEFT_OP   OP_EXTUNI
1876 #define LAST_AUTOTAB_RIGHT_OP  OP_DOLLM
1877
1878 enum {
1879   OP_END,            /* 0 End of pattern */
1880
1881   /* Values corresponding to backslashed metacharacters */
1882
1883   OP_SOD,            /* 1 Start of data: \A */
1884   OP_SOM,            /* 2 Start of match (subject + offset): \G */
1885   OP_SET_SOM,        /* 3 Set start of match (\K) */
1886   OP_NOT_WORD_BOUNDARY,  /*  4 \B */
1887   OP_WORD_BOUNDARY,      /*  5 \b */
1888   OP_NOT_DIGIT,          /*  6 \D */
1889   OP_DIGIT,              /*  7 \d */
1890   OP_NOT_WHITESPACE,     /*  8 \S */
1891   OP_WHITESPACE,         /*  9 \s */
1892   OP_NOT_WORDCHAR,       /* 10 \W */
1893   OP_WORDCHAR,           /* 11 \w */
1894
1895   OP_ANY,            /* 12 Match any character except newline (\N) */
1896   OP_ALLANY,         /* 13 Match any character */
1897   OP_ANYBYTE,        /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1898   OP_NOTPROP,        /* 15 \P (not Unicode property) */
1899   OP_PROP,           /* 16 \p (Unicode property) */
1900   OP_ANYNL,          /* 17 \R (any newline sequence) */
1901   OP_NOT_HSPACE,     /* 18 \H (not horizontal whitespace) */
1902   OP_HSPACE,         /* 19 \h (horizontal whitespace) */
1903   OP_NOT_VSPACE,     /* 20 \V (not vertical whitespace) */
1904   OP_VSPACE,         /* 21 \v (vertical whitespace) */
1905   OP_EXTUNI,         /* 22 \X (extended Unicode sequence */
1906   OP_EODN,           /* 23 End of data or \n at end of data (\Z) */
1907   OP_EOD,            /* 24 End of data (\z) */
1908
1909   /* Line end assertions */
1910
1911   OP_DOLL,           /* 25 End of line - not multiline */
1912   OP_DOLLM,          /* 26 End of line - multiline */
1913   OP_CIRC,           /* 27 Start of line - not multiline */
1914   OP_CIRCM,          /* 28 Start of line - multiline */
1915
1916   /* Single characters; caseful must precede the caseless ones */
1917
1918   OP_CHAR,           /* 29 Match one character, casefully */
1919   OP_CHARI,          /* 30 Match one character, caselessly */
1920   OP_NOT,            /* 31 Match one character, not the given one, casefully */
1921   OP_NOTI,           /* 32 Match one character, not the given one, caselessly */
1922
1923   /* The following sets of 13 opcodes must always be kept in step because
1924   the offset from the first one is used to generate the others. */
1925
1926   /* Repeated characters; caseful must precede the caseless ones */
1927
1928   OP_STAR,           /* 33 The maximizing and minimizing versions of */
1929   OP_MINSTAR,        /* 34 these six opcodes must come in pairs, with */
1930   OP_PLUS,           /* 35 the minimizing one second. */
1931   OP_MINPLUS,        /* 36 */
1932   OP_QUERY,          /* 37 */
1933   OP_MINQUERY,       /* 38 */
1934
1935   OP_UPTO,           /* 39 From 0 to n matches of one character, caseful*/
1936   OP_MINUPTO,        /* 40 */
1937   OP_EXACT,          /* 41 Exactly n matches */
1938
1939   OP_POSSTAR,        /* 42 Possessified star, caseful */
1940   OP_POSPLUS,        /* 43 Possessified plus, caseful */
1941   OP_POSQUERY,       /* 44 Posesssified query, caseful */
1942   OP_POSUPTO,        /* 45 Possessified upto, caseful */
1943
1944   /* Repeated characters; caseless must follow the caseful ones */
1945
1946   OP_STARI,          /* 46 */
1947   OP_MINSTARI,       /* 47 */
1948   OP_PLUSI,          /* 48 */
1949   OP_MINPLUSI,       /* 49 */
1950   OP_QUERYI,         /* 50 */
1951   OP_MINQUERYI,      /* 51 */
1952
1953   OP_UPTOI,          /* 52 From 0 to n matches of one character, caseless */
1954   OP_MINUPTOI,       /* 53 */
1955   OP_EXACTI,         /* 54 */
1956
1957   OP_POSSTARI,       /* 55 Possessified star, caseless */
1958   OP_POSPLUSI,       /* 56 Possessified plus, caseless */
1959   OP_POSQUERYI,      /* 57 Posesssified query, caseless */
1960   OP_POSUPTOI,       /* 58 Possessified upto, caseless */
1961
1962   /* The negated ones must follow the non-negated ones, and match them */
1963   /* Negated repeated character, caseful; must precede the caseless ones */
1964
1965   OP_NOTSTAR,        /* 59 The maximizing and minimizing versions of */
1966   OP_NOTMINSTAR,     /* 60 these six opcodes must come in pairs, with */
1967   OP_NOTPLUS,        /* 61 the minimizing one second. They must be in */
1968   OP_NOTMINPLUS,     /* 62 exactly the same order as those above. */
1969   OP_NOTQUERY,       /* 63 */
1970   OP_NOTMINQUERY,    /* 64 */
1971
1972   OP_NOTUPTO,        /* 65 From 0 to n matches, caseful */
1973   OP_NOTMINUPTO,     /* 66 */
1974   OP_NOTEXACT,       /* 67 Exactly n matches */
1975
1976   OP_NOTPOSSTAR,     /* 68 Possessified versions, caseful */
1977   OP_NOTPOSPLUS,     /* 69 */
1978   OP_NOTPOSQUERY,    /* 70 */
1979   OP_NOTPOSUPTO,     /* 71 */
1980
1981   /* Negated repeated character, caseless; must follow the caseful ones */
1982
1983   OP_NOTSTARI,       /* 72 */
1984   OP_NOTMINSTARI,    /* 73 */
1985   OP_NOTPLUSI,       /* 74 */
1986   OP_NOTMINPLUSI,    /* 75 */
1987   OP_NOTQUERYI,      /* 76 */
1988   OP_NOTMINQUERYI,   /* 77 */
1989
1990   OP_NOTUPTOI,       /* 78 From 0 to n matches, caseless */
1991   OP_NOTMINUPTOI,    /* 79 */
1992   OP_NOTEXACTI,      /* 80 Exactly n matches */
1993
1994   OP_NOTPOSSTARI,    /* 81 Possessified versions, caseless */
1995   OP_NOTPOSPLUSI,    /* 82 */
1996   OP_NOTPOSQUERYI,   /* 83 */
1997   OP_NOTPOSUPTOI,    /* 84 */
1998
1999   /* Character types */
2000
2001   OP_TYPESTAR,       /* 85 The maximizing and minimizing versions of */
2002   OP_TYPEMINSTAR,    /* 86 these six opcodes must come in pairs, with */
2003   OP_TYPEPLUS,       /* 87 the minimizing one second. These codes must */
2004   OP_TYPEMINPLUS,    /* 88 be in exactly the same order as those above. */
2005   OP_TYPEQUERY,      /* 89 */
2006   OP_TYPEMINQUERY,   /* 90 */
2007
2008   OP_TYPEUPTO,       /* 91 From 0 to n matches */
2009   OP_TYPEMINUPTO,    /* 92 */
2010   OP_TYPEEXACT,      /* 93 Exactly n matches */
2011
2012   OP_TYPEPOSSTAR,    /* 94 Possessified versions */
2013   OP_TYPEPOSPLUS,    /* 95 */
2014   OP_TYPEPOSQUERY,   /* 96 */
2015   OP_TYPEPOSUPTO,    /* 97 */
2016
2017   /* These are used for character classes and back references; only the
2018   first six are the same as the sets above. */
2019
2020   OP_CRSTAR,         /* 98 The maximizing and minimizing versions of */
2021   OP_CRMINSTAR,      /* 99 all these opcodes must come in pairs, with */
2022   OP_CRPLUS,         /* 100 the minimizing one second. These codes must */
2023   OP_CRMINPLUS,      /* 101 be in exactly the same order as those above. */
2024   OP_CRQUERY,        /* 102 */
2025   OP_CRMINQUERY,     /* 103 */
2026
2027   OP_CRRANGE,        /* 104 These are different to the three sets above. */
2028   OP_CRMINRANGE,     /* 105 */
2029
2030   OP_CRPOSSTAR,      /* 106 Possessified versions */
2031   OP_CRPOSPLUS,      /* 107 */
2032   OP_CRPOSQUERY,     /* 108 */
2033   OP_CRPOSRANGE,     /* 109 */
2034
2035   /* End of quantifier opcodes */
2036
2037   OP_CLASS,          /* 110 Match a character class, chars < 256 only */
2038   OP_NCLASS,         /* 111 Same, but the bitmap was created from a negative
2039                               class - the difference is relevant only when a
2040                               character > 255 is encountered. */
2041   OP_XCLASS,         /* 112 Extended class for handling > 255 chars within the
2042                               class. This does both positive and negative. */
2043   OP_REF,            /* 113 Match a back reference, casefully */
2044   OP_REFI,           /* 114 Match a back reference, caselessly */
2045   OP_DNREF,          /* 115 Match a duplicate name backref, casefully */
2046   OP_DNREFI,         /* 116 Match a duplicate name backref, caselessly */
2047   OP_RECURSE,        /* 117 Match a numbered subpattern (possibly recursive) */
2048   OP_CALLOUT,        /* 118 Call out to external function if provided */
2049
2050   OP_ALT,            /* 119 Start of alternation */
2051   OP_KET,            /* 120 End of group that doesn't have an unbounded repeat */
2052   OP_KETRMAX,        /* 121 These two must remain together and in this */
2053   OP_KETRMIN,        /* 122 order. They are for groups the repeat for ever. */
2054   OP_KETRPOS,        /* 123 Possessive unlimited repeat. */
2055
2056   /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
2057   asserts must remain in order. */
2058
2059   OP_REVERSE,        /* 124 Move pointer back - used in lookbehind assertions */
2060   OP_ASSERT,         /* 125 Positive lookahead */
2061   OP_ASSERT_NOT,     /* 126 Negative lookahead */
2062   OP_ASSERTBACK,     /* 127 Positive lookbehind */
2063   OP_ASSERTBACK_NOT, /* 128 Negative lookbehind */
2064
2065   /* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
2066   after the assertions, with ONCE first, as there's a test for >= ONCE for a
2067   subpattern that isn't an assertion. The POS versions must immediately follow
2068   the non-POS versions in each case. */
2069
2070   OP_ONCE,           /* 129 Atomic group, contains captures */
2071   OP_ONCE_NC,        /* 130 Atomic group containing no captures */
2072   OP_BRA,            /* 131 Start of non-capturing bracket */
2073   OP_BRAPOS,         /* 132 Ditto, with unlimited, possessive repeat */
2074   OP_CBRA,           /* 133 Start of capturing bracket */
2075   OP_CBRAPOS,        /* 134 Ditto, with unlimited, possessive repeat */
2076   OP_COND,           /* 135 Conditional group */
2077
2078   /* These five must follow the previous five, in the same order. There's a
2079   check for >= SBRA to distinguish the two sets. */
2080
2081   OP_SBRA,           /* 136 Start of non-capturing bracket, check empty  */
2082   OP_SBRAPOS,        /* 137 Ditto, with unlimited, possessive repeat */
2083   OP_SCBRA,          /* 138 Start of capturing bracket, check empty */
2084   OP_SCBRAPOS,       /* 139 Ditto, with unlimited, possessive repeat */
2085   OP_SCOND,          /* 140 Conditional group, check empty */
2086
2087   /* The next two pairs must (respectively) be kept together. */
2088
2089   OP_CREF,           /* 141 Used to hold a capture number as condition */
2090   OP_DNCREF,         /* 142 Used to point to duplicate names as a condition */
2091   OP_RREF,           /* 143 Used to hold a recursion number as condition */
2092   OP_DNRREF,         /* 144 Used to point to duplicate names as a condition */
2093   OP_DEF,            /* 145 The DEFINE condition */
2094
2095   OP_BRAZERO,        /* 146 These two must remain together and in this */
2096   OP_BRAMINZERO,     /* 147 order. */
2097   OP_BRAPOSZERO,     /* 148 */
2098
2099   /* These are backtracking control verbs */
2100
2101   OP_MARK,           /* 149 always has an argument */
2102   OP_PRUNE,          /* 150 */
2103   OP_PRUNE_ARG,      /* 151 same, but with argument */
2104   OP_SKIP,           /* 152 */
2105   OP_SKIP_ARG,       /* 153 same, but with argument */
2106   OP_THEN,           /* 154 */
2107   OP_THEN_ARG,       /* 155 same, but with argument */
2108   OP_COMMIT,         /* 156 */
2109
2110   /* These are forced failure and success verbs */
2111
2112   OP_FAIL,           /* 157 */
2113   OP_ACCEPT,         /* 158 */
2114   OP_ASSERT_ACCEPT,  /* 159 Used inside assertions */
2115   OP_CLOSE,          /* 160 Used before OP_ACCEPT to close open captures */
2116
2117   /* This is used to skip a subpattern with a {0} quantifier */
2118
2119   OP_SKIPZERO,       /* 161 */
2120
2121   /* This is not an opcode, but is used to check that tables indexed by opcode
2122   are the correct length, in order to catch updating errors - there have been
2123   some in the past. */
2124
2125   OP_TABLE_LENGTH
2126 };
2127
2128 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
2129 definitions that follow must also be updated to match. There are also tables
2130 called "opcode_possessify" in pcre_compile.c and "coptable" and "poptable" in
2131 pcre_dfa_exec.c that must be updated. */
2132
2133
2134 /* This macro defines textual names for all the opcodes. These are used only
2135 for debugging, and some of them are only partial names. The macro is referenced
2136 only in pcre_printint.c, which fills out the full names in many cases (and in
2137 some cases doesn't actually use these names at all). */
2138
2139 #define OP_NAME_LIST \
2140   "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d",         \
2141   "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte",         \
2142   "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v",           \
2143   "extuni",  "\\Z", "\\z",                                        \
2144   "$", "$", "^", "^", "char", "chari", "not", "noti",             \
2145   "*", "*?", "+", "+?", "?", "??",                                \
2146   "{", "{", "{",                                                  \
2147   "*+","++", "?+", "{",                                           \
2148   "*", "*?", "+", "+?", "?", "??",                                \
2149   "{", "{", "{",                                                  \
2150   "*+","++", "?+", "{",                                           \
2151   "*", "*?", "+", "+?", "?", "??",                                \
2152   "{", "{", "{",                                                  \
2153   "*+","++", "?+", "{",                                           \
2154   "*", "*?", "+", "+?", "?", "??",                                \
2155   "{", "{", "{",                                                  \
2156   "*+","++", "?+", "{",                                           \
2157   "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
2158   "*+","++", "?+", "{",                                           \
2159   "*", "*?", "+", "+?", "?", "??", "{", "{",                      \
2160   "*+","++", "?+", "{",                                           \
2161   "class", "nclass", "xclass", "Ref", "Refi", "DnRef", "DnRefi",  \
2162   "Recurse", "Callout",                                           \
2163   "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos",                  \
2164   "Reverse", "Assert", "Assert not", "AssertB", "AssertB not",    \
2165   "Once", "Once_NC",                                              \
2166   "Bra", "BraPos", "CBra", "CBraPos",                             \
2167   "Cond",                                                         \
2168   "SBra", "SBraPos", "SCBra", "SCBraPos",                         \
2169   "SCond",                                                        \
2170   "Cond ref", "Cond dnref", "Cond rec", "Cond dnrec", "Cond def", \
2171   "Brazero", "Braminzero", "Braposzero",                          \
2172   "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP",                  \
2173   "*THEN", "*THEN", "*COMMIT", "*FAIL",                           \
2174   "*ACCEPT", "*ASSERT_ACCEPT",                                    \
2175   "Close", "Skip zero"
2176
2177
2178 /* This macro defines the length of fixed length operations in the compiled
2179 regex. The lengths are used when searching for specific things, and also in the
2180 debugging printing of a compiled regex. We use a macro so that it can be
2181 defined close to the definitions of the opcodes themselves.
2182
2183 As things have been extended, some of these are no longer fixed lenths, but are
2184 minima instead. For example, the length of a single-character repeat may vary
2185 in UTF-8 mode. The code that uses this table must know about such things. */
2186
2187 #define OP_LENGTHS \
2188   1,                             /* End                                    */ \
2189   1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \
2190   1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \
2191   1, 1, 1,                       /* Any, AllAny, Anybyte                   */ \
2192   3, 3,                          /* \P, \p                                 */ \
2193   1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \
2194   1,                             /* \X                                     */ \
2195   1, 1, 1, 1, 1, 1,              /* \Z, \z, $, $M ^, ^M                    */ \
2196   2,                             /* Char  - the minimum length             */ \
2197   2,                             /* Chari  - the minimum length            */ \
2198   2,                             /* not                                    */ \
2199   2,                             /* noti                                   */ \
2200   /* Positive single-char repeats                             ** These are */ \
2201   2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??       ** minima in */ \
2202   2+IMM2_SIZE, 2+IMM2_SIZE,      /* upto, minupto             ** mode      */ \
2203   2+IMM2_SIZE,                   /* exact                                  */ \
2204   2, 2, 2, 2+IMM2_SIZE,          /* *+, ++, ?+, upto+                      */ \
2205   2, 2, 2, 2, 2, 2,              /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8     */ \
2206   2+IMM2_SIZE, 2+IMM2_SIZE,      /* upto I, minupto I                      */ \
2207   2+IMM2_SIZE,                   /* exact I                                */ \
2208   2, 2, 2, 2+IMM2_SIZE,          /* *+I, ++I, ?+I, upto+I                  */ \
2209   /* Negative single-char repeats - only for chars < 256                   */ \
2210   2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \
2211   2+IMM2_SIZE, 2+IMM2_SIZE,      /* NOT upto, minupto                      */ \
2212   2+IMM2_SIZE,                   /* NOT exact                              */ \
2213   2, 2, 2, 2+IMM2_SIZE,          /* Possessive NOT *, +, ?, upto           */ \
2214   2, 2, 2, 2, 2, 2,              /* NOT *I, *?I, +I, +?I, ?I, ??I          */ \
2215   2+IMM2_SIZE, 2+IMM2_SIZE,      /* NOT upto I, minupto I                  */ \
2216   2+IMM2_SIZE,                   /* NOT exact I                            */ \
2217   2, 2, 2, 2+IMM2_SIZE,          /* Possessive NOT *I, +I, ?I, upto I      */ \
2218   /* Positive type repeats                                                 */ \
2219   2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \
2220   2+IMM2_SIZE, 2+IMM2_SIZE,      /* Type upto, minupto                     */ \
2221   2+IMM2_SIZE,                   /* Type exact                             */ \
2222   2, 2, 2, 2+IMM2_SIZE,          /* Possessive *+, ++, ?+, upto+           */ \
2223   /* Character class & ref repeats                                         */ \
2224   1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */ \
2225   1+2*IMM2_SIZE, 1+2*IMM2_SIZE,  /* CRRANGE, CRMINRANGE                    */ \
2226   1, 1, 1, 1+2*IMM2_SIZE,        /* Possessive *+, ++, ?+, CRPOSRANGE      */ \
2227   1+(32/sizeof(pcre_uchar)),     /* CLASS                                  */ \
2228   1+(32/sizeof(pcre_uchar)),     /* NCLASS                                 */ \
2229   0,                             /* XCLASS - variable length               */ \
2230   1+IMM2_SIZE,                   /* REF                                    */ \
2231   1+IMM2_SIZE,                   /* REFI                                   */ \
2232   1+2*IMM2_SIZE,                 /* DNREF                                  */ \
2233   1+2*IMM2_SIZE,                 /* DNREFI                                 */ \
2234   1+LINK_SIZE,                   /* RECURSE                                */ \
2235   2+2*LINK_SIZE,                 /* CALLOUT                                */ \
2236   1+LINK_SIZE,                   /* Alt                                    */ \
2237   1+LINK_SIZE,                   /* Ket                                    */ \
2238   1+LINK_SIZE,                   /* KetRmax                                */ \
2239   1+LINK_SIZE,                   /* KetRmin                                */ \
2240   1+LINK_SIZE,                   /* KetRpos                                */ \
2241   1+LINK_SIZE,                   /* Reverse                                */ \
2242   1+LINK_SIZE,                   /* Assert                                 */ \
2243   1+LINK_SIZE,                   /* Assert not                             */ \
2244   1+LINK_SIZE,                   /* Assert behind                          */ \
2245   1+LINK_SIZE,                   /* Assert behind not                      */ \
2246   1+LINK_SIZE,                   /* ONCE                                   */ \
2247   1+LINK_SIZE,                   /* ONCE_NC                                */ \
2248   1+LINK_SIZE,                   /* BRA                                    */ \
2249   1+LINK_SIZE,                   /* BRAPOS                                 */ \
2250   1+LINK_SIZE+IMM2_SIZE,         /* CBRA                                   */ \
2251   1+LINK_SIZE+IMM2_SIZE,         /* CBRAPOS                                */ \
2252   1+LINK_SIZE,                   /* COND                                   */ \
2253   1+LINK_SIZE,                   /* SBRA                                   */ \
2254   1+LINK_SIZE,                   /* SBRAPOS                                */ \
2255   1+LINK_SIZE+IMM2_SIZE,         /* SCBRA                                  */ \
2256   1+LINK_SIZE+IMM2_SIZE,         /* SCBRAPOS                               */ \
2257   1+LINK_SIZE,                   /* SCOND                                  */ \
2258   1+IMM2_SIZE, 1+2*IMM2_SIZE,    /* CREF, DNCREF                           */ \
2259   1+IMM2_SIZE, 1+2*IMM2_SIZE,    /* RREF, DNRREF                           */ \
2260   1,                             /* DEF                                    */ \
2261   1, 1, 1,                       /* BRAZERO, BRAMINZERO, BRAPOSZERO        */ \
2262   3, 1, 3,                       /* MARK, PRUNE, PRUNE_ARG                 */ \
2263   1, 3,                          /* SKIP, SKIP_ARG                         */ \
2264   1, 3,                          /* THEN, THEN_ARG                         */ \
2265   1, 1, 1, 1,                    /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT    */ \
2266   1+IMM2_SIZE, 1                 /* CLOSE, SKIPZERO                        */
2267
2268 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
2269
2270 #define RREF_ANY  0xffff
2271
2272 /* Compile time error code numbers. They are given names so that they can more
2273 easily be tracked. When a new number is added, the table called eint in
2274 pcreposix.c must be updated. */
2275
2276 enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,
2277        ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
2278        ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
2279        ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
2280        ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
2281        ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
2282        ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
2283        ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERR79,
2284        ERR80, ERR81, ERR82, ERR83, ERR84, ERR85, ERRCOUNT };
2285
2286 /* JIT compiling modes. The function list is indexed by them. */
2287
2288 enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
2289        JIT_NUMBER_OF_COMPILE_MODES };
2290
2291 /* The real format of the start of the pcre block; the index of names and the
2292 code vector run on as long as necessary after the end. We store an explicit
2293 offset to the name table so that if a regex is compiled on one host, saved, and
2294 then run on another where the size of pointers is different, all might still
2295 be well.
2296
2297 The size of the structure must be a multiple of 8 bytes. For the case of
2298 compiled-on-4 and run-on-8, we include an extra pointer that is always NULL so
2299 that there are an even number of pointers which therefore are a multiple of 8
2300 bytes.
2301
2302 It is necessary to fork the struct for the 32 bit library, since it needs to
2303 use pcre_uint32 for first_char and req_char. We can't put an ifdef inside the
2304 typedef because pcretest needs access to the struct of the 8-, 16- and 32-bit
2305 variants.
2306
2307 *** WARNING ***
2308 When new fields are added to these structures, remember to adjust the code in
2309 pcre_byte_order.c that is concerned with swapping the byte order of the fields
2310 when a compiled regex is reloaded on a host with different endianness.
2311 *** WARNING ***
2312 There is also similar byte-flipping code in pcretest.c, which is used for
2313 testing the byte-flipping features. It must also be kept in step.
2314 *** WARNING ***
2315 */
2316
2317 typedef struct real_pcre8_or_16 {
2318   pcre_uint32 magic_number;
2319   pcre_uint32 size;               /* Total that was malloced */
2320   pcre_uint32 options;            /* Public options */
2321   pcre_uint32 flags;              /* Private flags */
2322   pcre_uint32 limit_match;        /* Limit set from regex */
2323   pcre_uint32 limit_recursion;    /* Limit set from regex */
2324   pcre_uint16 first_char;         /* Starting character */
2325   pcre_uint16 req_char;           /* This character must be seen */
2326   pcre_uint16 max_lookbehind;     /* Longest lookbehind (characters) */
2327   pcre_uint16 top_bracket;        /* Highest numbered group */
2328   pcre_uint16 top_backref;        /* Highest numbered back reference */
2329   pcre_uint16 name_table_offset;  /* Offset to name table that follows */
2330   pcre_uint16 name_entry_size;    /* Size of any name items */
2331   pcre_uint16 name_count;         /* Number of name items */
2332   pcre_uint16 ref_count;          /* Reference count */
2333   pcre_uint16 dummy1;             /* To ensure size is a multiple of 8 */
2334   pcre_uint16 dummy2;             /* To ensure size is a multiple of 8 */
2335   pcre_uint16 dummy3;             /* To ensure size is a multiple of 8 */
2336   const pcre_uint8 *tables;       /* Pointer to tables or NULL for std */
2337   void             *nullpad;      /* NULL padding */
2338 } real_pcre8_or_16;
2339
2340 typedef struct real_pcre8_or_16 real_pcre;
2341 typedef struct real_pcre8_or_16 real_pcre16;
2342
2343 typedef struct real_pcre32 {
2344   pcre_uint32 magic_number;
2345   pcre_uint32 size;               /* Total that was malloced */
2346   pcre_uint32 options;            /* Public options */
2347   pcre_uint32 flags;              /* Private flags */
2348   pcre_uint32 limit_match;        /* Limit set from regex */
2349   pcre_uint32 limit_recursion;    /* Limit set from regex */
2350   pcre_uint32 first_char;         /* Starting character */
2351   pcre_uint32 req_char;           /* This character must be seen */
2352   pcre_uint16 max_lookbehind;     /* Longest lookbehind (characters) */
2353   pcre_uint16 top_bracket;        /* Highest numbered group */
2354   pcre_uint16 top_backref;        /* Highest numbered back reference */
2355   pcre_uint16 name_table_offset;  /* Offset to name table that follows */
2356   pcre_uint16 name_entry_size;    /* Size of any name items */
2357   pcre_uint16 name_count;         /* Number of name items */
2358   pcre_uint16 ref_count;          /* Reference count */
2359   pcre_uint16 dummy;              /* To ensure size is a multiple of 8 */
2360   const pcre_uint8 *tables;       /* Pointer to tables or NULL for std */
2361   void             *nullpad;      /* NULL padding */
2362 } real_pcre32;
2363
2364 #if defined COMPILE_PCRE8
2365 #define REAL_PCRE real_pcre
2366 #elif defined COMPILE_PCRE16
2367 #define REAL_PCRE real_pcre16
2368 #elif defined COMPILE_PCRE32
2369 #define REAL_PCRE real_pcre32
2370 #endif
2371
2372 /* Assert that the size of REAL_PCRE is divisible by 8 */
2373 typedef int __assert_real_pcre_size_divisible_8[(sizeof(REAL_PCRE) % 8) == 0 ? 1 : -1];
2374
2375 /* Needed in pcretest to access some fields in the real_pcre* structures
2376  * directly. They're unified for 8/16/32 bits since the structs only differ
2377  * after these fields; if that ever changes, need to fork those defines into
2378  * 8/16 and 32 bit versions. */
2379 #define REAL_PCRE_MAGIC(re)     (((REAL_PCRE*)re)->magic_number)
2380 #define REAL_PCRE_SIZE(re)      (((REAL_PCRE*)re)->size)
2381 #define REAL_PCRE_OPTIONS(re)   (((REAL_PCRE*)re)->options)
2382 #define REAL_PCRE_FLAGS(re)     (((REAL_PCRE*)re)->flags)
2383
2384 /* The format of the block used to store data from pcre_study(). The same
2385 remark (see NOTE above) about extending this structure applies. */
2386
2387 typedef struct pcre_study_data {
2388   pcre_uint32 size;               /* Total that was malloced */
2389   pcre_uint32 flags;              /* Private flags */
2390   pcre_uint8 start_bits[32];      /* Starting char bits */
2391   pcre_uint32 minlength;          /* Minimum subject length */
2392 } pcre_study_data;
2393
2394 /* Structure for building a chain of open capturing subpatterns during
2395 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
2396 encountered. This is also used to identify subpatterns that contain recursive
2397 back references to themselves, so that they can be made atomic. */
2398
2399 typedef struct open_capitem {
2400   struct open_capitem *next;    /* Chain link */
2401   pcre_uint16 number;           /* Capture number */
2402   pcre_uint16 flag;             /* Set TRUE if recursive back ref */
2403 } open_capitem;
2404
2405 /* Structure for building a list of named groups during the first pass of
2406 compiling. */
2407
2408 typedef struct named_group {
2409   const pcre_uchar  *name;          /* Points to the name in the pattern */
2410   int                length;        /* Length of the name */
2411   pcre_uint32        number;        /* Group number */
2412 } named_group;
2413
2414 /* Structure for passing "static" information around between the functions
2415 doing the compiling, so that they are thread-safe. */
2416
2417 typedef struct compile_data {
2418   const pcre_uint8 *lcc;            /* Points to lower casing table */
2419   const pcre_uint8 *fcc;            /* Points to case-flipping table */
2420   const pcre_uint8 *cbits;          /* Points to character type table */
2421   const pcre_uint8 *ctypes;         /* Points to table of type maps */
2422   const pcre_uchar *start_workspace;/* The start of working space */
2423   const pcre_uchar *start_code;     /* The start of the compiled code */
2424   const pcre_uchar *start_pattern;  /* The start of the pattern */
2425   const pcre_uchar *end_pattern;    /* The end of the pattern */
2426   pcre_uchar *hwm;                  /* High watermark of workspace */
2427   open_capitem *open_caps;          /* Chain of open capture items */
2428   named_group *named_groups;        /* Points to vector in pre-compile */
2429   pcre_uchar *name_table;           /* The name/number table */
2430   int  names_found;                 /* Number of entries so far */
2431   int  name_entry_size;             /* Size of each entry */
2432   int  named_group_list_size;       /* Number of entries in the list */
2433   int  workspace_size;              /* Size of workspace */
2434   unsigned int bracount;            /* Count of capturing parens as we compile */
2435   int  final_bracount;              /* Saved value after first pass */
2436   int  max_lookbehind;              /* Maximum lookbehind (characters) */
2437   int  top_backref;                 /* Maximum back reference */
2438   unsigned int backref_map;         /* Bitmap of low back refs */
2439   unsigned int namedrefcount;       /* Number of backreferences by name */
2440   int  parens_depth;                /* Depth of nested parentheses */
2441   int  assert_depth;                /* Depth of nested assertions */
2442   pcre_uint32 external_options;     /* External (initial) options */
2443   pcre_uint32 external_flags;       /* External flag bits to be set */
2444   int  req_varyopt;                 /* "After variable item" flag for reqbyte */
2445   BOOL had_accept;                  /* (*ACCEPT) encountered */
2446   BOOL had_pruneorskip;             /* (*PRUNE) or (*SKIP) encountered */
2447   BOOL check_lookbehind;            /* Lookbehinds need later checking */
2448   BOOL dupnames;                    /* Duplicate names exist */
2449   int  nltype;                      /* Newline type */
2450   int  nllen;                       /* Newline string length */
2451   pcre_uchar nl[4];                 /* Newline string when fixed length */
2452 } compile_data;
2453
2454 /* Structure for maintaining a chain of pointers to the currently incomplete
2455 branches, for testing for left recursion while compiling. */
2456
2457 typedef struct branch_chain {
2458   struct branch_chain *outer;
2459   pcre_uchar *current_branch;
2460 } branch_chain;
2461
2462 /* Structure for items in a linked list that represents an explicit recursive
2463 call within the pattern; used by pcre_exec(). */
2464
2465 typedef struct recursion_info {
2466   struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
2467   unsigned int group_num;         /* Number of group that was called */
2468   int *offset_save;               /* Pointer to start of saved offsets */
2469   int saved_max;                  /* Number of saved offsets */
2470   int saved_capture_last;         /* Last capture number */
2471   PCRE_PUCHAR subject_position;   /* Position at start of recursion */
2472 } recursion_info;
2473
2474 /* A similar structure for pcre_dfa_exec(). */
2475
2476 typedef struct dfa_recursion_info {
2477   struct dfa_recursion_info *prevrec;
2478   int group_num;
2479   PCRE_PUCHAR subject_position;
2480 } dfa_recursion_info;
2481
2482 /* Structure for building a chain of data for holding the values of the subject
2483 pointer at the start of each subpattern, so as to detect when an empty string
2484 has been matched by a subpattern - to break infinite loops; used by
2485 pcre_exec(). */
2486
2487 typedef struct eptrblock {
2488   struct eptrblock *epb_prev;
2489   PCRE_PUCHAR epb_saved_eptr;
2490 } eptrblock;
2491
2492
2493 /* Structure for passing "static" information around between the functions
2494 doing traditional NFA matching, so that they are thread-safe. */
2495
2496 typedef struct match_data {
2497   unsigned long int match_call_count;      /* As it says */
2498   unsigned long int match_limit;           /* As it says */
2499   unsigned long int match_limit_recursion; /* As it says */
2500   int   *offset_vector;           /* Offset vector */
2501   int    offset_end;              /* One past the end */
2502   int    offset_max;              /* The maximum usable for return data */
2503   int    nltype;                  /* Newline type */
2504   int    nllen;                   /* Newline string length */
2505   int    name_count;              /* Number of names in name table */
2506   int    name_entry_size;         /* Size of entry in names table */
2507   unsigned int skip_arg_count;    /* For counting SKIP_ARGs */
2508   unsigned int ignore_skip_arg;   /* For re-run when SKIP arg name not found */
2509   pcre_uchar *name_table;         /* Table of names */
2510   pcre_uchar nl[4];               /* Newline string when fixed */
2511   const  pcre_uint8 *lcc;         /* Points to lower casing table */
2512   const  pcre_uint8 *fcc;         /* Points to case-flipping table */
2513   const  pcre_uint8 *ctypes;      /* Points to table of type maps */
2514   BOOL   notbol;                  /* NOTBOL flag */
2515   BOOL   noteol;                  /* NOTEOL flag */
2516   BOOL   utf;                     /* UTF-8 / UTF-16 flag */
2517   BOOL   jscript_compat;          /* JAVASCRIPT_COMPAT flag */
2518   BOOL   use_ucp;                 /* PCRE_UCP flag */
2519   BOOL   endonly;                 /* Dollar not before final \n */
2520   BOOL   notempty;                /* Empty string match not wanted */
2521   BOOL   notempty_atstart;        /* Empty string match at start not wanted */
2522   BOOL   hitend;                  /* Hit the end of the subject at some point */
2523   BOOL   bsr_anycrlf;             /* \R is just any CRLF, not full Unicode */
2524   BOOL   hasthen;                 /* Pattern contains (*THEN) */
2525   const  pcre_uchar *start_code;  /* For use when recursing */
2526   PCRE_PUCHAR start_subject;      /* Start of the subject string */
2527   PCRE_PUCHAR end_subject;        /* End of the subject string */
2528   PCRE_PUCHAR start_match_ptr;    /* Start of matched string */
2529   PCRE_PUCHAR end_match_ptr;      /* Subject position at end match */
2530   PCRE_PUCHAR start_used_ptr;     /* Earliest consulted character */
2531   int    partial;                 /* PARTIAL options */
2532   int    end_offset_top;          /* Highwater mark at end of match */
2533   pcre_int32 capture_last;        /* Most recent capture number + overflow flag */
2534   int    start_offset;            /* The start offset value */
2535   int    match_function_type;     /* Set for certain special calls of MATCH() */
2536   eptrblock *eptrchain;           /* Chain of eptrblocks for tail recursions */
2537   int    eptrn;                   /* Next free eptrblock */
2538   recursion_info *recursive;      /* Linked list of recursion data */
2539   void  *callout_data;            /* To pass back to callouts */
2540   const  pcre_uchar *mark;        /* Mark pointer to pass back on success */
2541   const  pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
2542   const  pcre_uchar *once_target; /* Where to back up to for atomic groups */
2543 #ifdef NO_RECURSE
2544   void  *match_frames_base;       /* For remembering malloc'd frames */
2545 #endif
2546 } match_data;
2547
2548 /* A similar structure is used for the same purpose by the DFA matching
2549 functions. */
2550
2551 typedef struct dfa_match_data {
2552   const pcre_uchar *start_code;     /* Start of the compiled pattern */
2553   const pcre_uchar *start_subject ; /* Start of the subject string */
2554   const pcre_uchar *end_subject;    /* End of subject string */
2555   const pcre_uchar *start_used_ptr; /* Earliest consulted character */
2556   const pcre_uint8 *tables;         /* Character tables */
2557   int   start_offset;               /* The start offset value */
2558   int   moptions;                   /* Match options */
2559   int   poptions;                   /* Pattern options */
2560   int   nltype;                     /* Newline type */
2561   int   nllen;                      /* Newline string length */
2562   pcre_uchar nl[4];                 /* Newline string when fixed */
2563   void *callout_data;               /* To pass back to callouts */
2564   dfa_recursion_info *recursive;    /* Linked list of recursion data */
2565 } dfa_match_data;
2566
2567 /* Bit definitions for entries in the pcre_ctypes table. */
2568
2569 #define ctype_space   0x01
2570 #define ctype_letter  0x02
2571 #define ctype_digit   0x04
2572 #define ctype_xdigit  0x08
2573 #define ctype_word    0x10   /* alphanumeric or '_' */
2574 #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */
2575
2576 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
2577 of bits for a class map. Some classes are built by combining these tables. */
2578
2579 #define cbit_space     0      /* [:space:] or \s */
2580 #define cbit_xdigit   32      /* [:xdigit:] */
2581 #define cbit_digit    64      /* [:digit:] or \d */
2582 #define cbit_upper    96      /* [:upper:] */
2583 #define cbit_lower   128      /* [:lower:] */
2584 #define cbit_word    160      /* [:word:] or \w */
2585 #define cbit_graph   192      /* [:graph:] */
2586 #define cbit_print   224      /* [:print:] */
2587 #define cbit_punct   256      /* [:punct:] */
2588 #define cbit_cntrl   288      /* [:cntrl:] */
2589 #define cbit_length  320      /* Length of the cbits table */
2590
2591 /* Offsets of the various tables from the base tables pointer, and
2592 total length. */
2593
2594 #define lcc_offset      0
2595 #define fcc_offset    256
2596 #define cbits_offset  512
2597 #define ctypes_offset (cbits_offset + cbit_length)
2598 #define tables_length (ctypes_offset + 256)
2599
2600 /* Internal function and data prefixes. */
2601
2602 #if defined COMPILE_PCRE8
2603 #ifndef PUBL
2604 #define PUBL(name) pcre_##name
2605 #endif
2606 #ifndef PRIV
2607 #define PRIV(name) _pcre_##name
2608 #endif
2609 #elif defined COMPILE_PCRE16
2610 #ifndef PUBL
2611 #define PUBL(name) pcre16_##name
2612 #endif
2613 #ifndef PRIV
2614 #define PRIV(name) _pcre16_##name
2615 #endif
2616 #elif defined COMPILE_PCRE32
2617 #ifndef PUBL
2618 #define PUBL(name) pcre32_##name
2619 #endif
2620 #ifndef PRIV
2621 #define PRIV(name) _pcre32_##name
2622 #endif
2623 #else
2624 #error Unsupported compiling mode
2625 #endif /* COMPILE_PCRE[8|16|32] */
2626
2627 /* Layout of the UCP type table that translates property names into types and
2628 codes. Each entry used to point directly to a name, but to reduce the number of
2629 relocations in shared libraries, it now has an offset into a single string
2630 instead. */
2631
2632 typedef struct {
2633   pcre_uint16 name_offset;
2634   pcre_uint16 type;
2635   pcre_uint16 value;
2636 } ucp_type_table;
2637
2638
2639 /* Internal shared data tables. These are tables that are used by more than one
2640 of the exported public functions. They have to be "external" in the C sense,
2641 but are not part of the PCRE public API. The data for these tables is in the
2642 pcre_tables.c module. */
2643
2644 #ifdef COMPILE_PCRE8
2645 extern const int            PRIV(utf8_table1)[];
2646 extern const int            PRIV(utf8_table1_size);
2647 extern const int            PRIV(utf8_table2)[];
2648 extern const int            PRIV(utf8_table3)[];
2649 extern const pcre_uint8     PRIV(utf8_table4)[];
2650 #endif /* COMPILE_PCRE8 */
2651
2652 extern const char           PRIV(utt_names)[];
2653 extern const ucp_type_table PRIV(utt)[];
2654 extern const int            PRIV(utt_size);
2655
2656 extern const pcre_uint8     PRIV(OP_lengths)[];
2657 extern const pcre_uint8     PRIV(default_tables)[];
2658
2659 extern const pcre_uint32    PRIV(hspace_list)[];
2660 extern const pcre_uint32    PRIV(vspace_list)[];
2661
2662
2663 /* Internal shared functions. These are functions that are used by more than
2664 one of the exported public functions. They have to be "external" in the C
2665 sense, but are not part of the PCRE public API. */
2666
2667 /* String comparison functions. */
2668 #if defined COMPILE_PCRE8
2669
2670 #define STRCMP_UC_UC(str1, str2) \
2671   strcmp((char *)(str1), (char *)(str2))
2672 #define STRCMP_UC_C8(str1, str2) \
2673   strcmp((char *)(str1), (str2))
2674 #define STRNCMP_UC_UC(str1, str2, num) \
2675   strncmp((char *)(str1), (char *)(str2), (num))
2676 #define STRNCMP_UC_C8(str1, str2, num) \
2677   strncmp((char *)(str1), (str2), (num))
2678 #define STRLEN_UC(str) strlen((const char *)str)
2679
2680 #elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
2681
2682 extern int               PRIV(strcmp_uc_uc)(const pcre_uchar *,
2683                            const pcre_uchar *);
2684 extern int               PRIV(strcmp_uc_c8)(const pcre_uchar *,
2685                            const char *);
2686 extern int               PRIV(strncmp_uc_uc)(const pcre_uchar *,
2687                            const pcre_uchar *, unsigned int num);
2688 extern int               PRIV(strncmp_uc_c8)(const pcre_uchar *,
2689                            const char *, unsigned int num);
2690 extern unsigned int      PRIV(strlen_uc)(const pcre_uchar *str);
2691
2692 #define STRCMP_UC_UC(str1, str2) \
2693   PRIV(strcmp_uc_uc)((str1), (str2))
2694 #define STRCMP_UC_C8(str1, str2) \
2695   PRIV(strcmp_uc_c8)((str1), (str2))
2696 #define STRNCMP_UC_UC(str1, str2, num) \
2697   PRIV(strncmp_uc_uc)((str1), (str2), (num))
2698 #define STRNCMP_UC_C8(str1, str2, num) \
2699   PRIV(strncmp_uc_c8)((str1), (str2), (num))
2700 #define STRLEN_UC(str) PRIV(strlen_uc)(str)
2701
2702 #endif /* COMPILE_PCRE[8|16|32] */
2703
2704 #if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
2705
2706 #define STRCMP_UC_UC_TEST(str1, str2) STRCMP_UC_UC(str1, str2)
2707 #define STRCMP_UC_C8_TEST(str1, str2) STRCMP_UC_C8(str1, str2)
2708
2709 #elif defined COMPILE_PCRE32
2710
2711 extern int               PRIV(strcmp_uc_uc_utf)(const pcre_uchar *,
2712                            const pcre_uchar *);
2713 extern int               PRIV(strcmp_uc_c8_utf)(const pcre_uchar *,
2714                            const char *);
2715
2716 #define STRCMP_UC_UC_TEST(str1, str2) \
2717   (utf ? PRIV(strcmp_uc_uc_utf)((str1), (str2)) : PRIV(strcmp_uc_uc)((str1), (str2)))
2718 #define STRCMP_UC_C8_TEST(str1, str2) \
2719   (utf ? PRIV(strcmp_uc_c8_utf)((str1), (str2)) : PRIV(strcmp_uc_c8)((str1), (str2)))
2720
2721 #endif /* COMPILE_PCRE[8|16|32] */
2722
2723 extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
2724 extern BOOL              PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2725                            int *, BOOL);
2726 extern unsigned int      PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
2727 extern int               PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
2728 extern BOOL              PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2729                            int *, BOOL);
2730 extern BOOL              PRIV(xclass)(pcre_uint32, const pcre_uchar *, BOOL);
2731
2732 #ifdef SUPPORT_JIT
2733 extern void              PRIV(jit_compile)(const REAL_PCRE *,
2734                            PUBL(extra) *, int);
2735 extern int               PRIV(jit_exec)(const PUBL(extra) *,
2736                            const pcre_uchar *, int, int, int, int *, int);
2737 extern void              PRIV(jit_free)(void *);
2738 extern int               PRIV(jit_get_size)(void *);
2739 extern const char*       PRIV(jit_get_target)(void);
2740 #endif
2741
2742 /* Unicode character database (UCD) */
2743
2744 typedef struct {
2745   pcre_uint8 script;     /* ucp_Arabic, etc. */
2746   pcre_uint8 chartype;   /* ucp_Cc, etc. (general categories) */
2747   pcre_uint8 gbprop;     /* ucp_gbControl, etc. (grapheme break property) */
2748   pcre_uint8 caseset;    /* offset to multichar other cases or zero */
2749   pcre_int32 other_case; /* offset to other case, or zero if none */
2750 } ucd_record;
2751
2752 extern const pcre_uint32 PRIV(ucd_caseless_sets)[];
2753 extern const ucd_record  PRIV(ucd_records)[];
2754 extern const pcre_uint8  PRIV(ucd_stage1)[];
2755 extern const pcre_uint16 PRIV(ucd_stage2)[];
2756 extern const pcre_uint32 PRIV(ucp_gentype)[];
2757 extern const pcre_uint32 PRIV(ucp_gbtable)[];
2758 #ifdef SUPPORT_JIT
2759 extern const int         PRIV(ucp_typerange)[];
2760 #endif
2761
2762 #ifdef SUPPORT_UCP
2763 /* UCD access macros */
2764
2765 #define UCD_BLOCK_SIZE 128
2766 #define GET_UCD(ch) (PRIV(ucd_records) + \
2767         PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
2768         UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
2769
2770 #define UCD_CHARTYPE(ch)    GET_UCD(ch)->chartype
2771 #define UCD_SCRIPT(ch)      GET_UCD(ch)->script
2772 #define UCD_CATEGORY(ch)    PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
2773 #define UCD_GRAPHBREAK(ch)  GET_UCD(ch)->gbprop
2774 #define UCD_CASESET(ch)     GET_UCD(ch)->caseset
2775 #define UCD_OTHERCASE(ch)   ((pcre_uint32)((int)ch + (int)(GET_UCD(ch)->other_case)))
2776
2777 #endif /* SUPPORT_UCP */
2778
2779 #endif
2780
2781 /* End of pcre_internal.h */