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    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, ERR86, 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   BOOL iscondassert;                /* Next assert is a condition */
 2450   int  nltype;                      /* Newline type */
 2451   int  nllen;                       /* Newline string length */
 2452   pcre_uchar nl[4];                 /* Newline string when fixed length */
 2453 } compile_data;
 2454 
 2455 /* Structure for maintaining a chain of pointers to the currently incomplete
 2456 branches, for testing for left recursion while compiling. */
 2457 
 2458 typedef struct branch_chain {
 2459   struct branch_chain *outer;
 2460   pcre_uchar *current_branch;
 2461 } branch_chain;
 2462 
 2463 /* Structure for mutual recursion detection. */
 2464 
 2465 typedef struct recurse_check {
 2466   struct recurse_check *prev;
 2467   const pcre_uchar *group;
 2468 } recurse_check;
 2469 
 2470 /* Structure for items in a linked list that represents an explicit recursive
 2471 call within the pattern; used by pcre_exec(). */
 2472 
 2473 typedef struct recursion_info {
 2474   struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
 2475   unsigned int group_num;         /* Number of group that was called */
 2476   int *offset_save;               /* Pointer to start of saved offsets */
 2477   int saved_max;                  /* Number of saved offsets */
 2478   int saved_capture_last;         /* Last capture number */
 2479   PCRE_PUCHAR subject_position;   /* Position at start of recursion */
 2480 } recursion_info;
 2481 
 2482 /* A similar structure for pcre_dfa_exec(). */
 2483 
 2484 typedef struct dfa_recursion_info {
 2485   struct dfa_recursion_info *prevrec;
 2486   int group_num;
 2487   PCRE_PUCHAR subject_position;
 2488 } dfa_recursion_info;
 2489 
 2490 /* Structure for building a chain of data for holding the values of the subject
 2491 pointer at the start of each subpattern, so as to detect when an empty string
 2492 has been matched by a subpattern - to break infinite loops; used by
 2493 pcre_exec(). */
 2494 
 2495 typedef struct eptrblock {
 2496   struct eptrblock *epb_prev;
 2497   PCRE_PUCHAR epb_saved_eptr;
 2498 } eptrblock;
 2499 
 2500 
 2501 /* Structure for passing "static" information around between the functions
 2502 doing traditional NFA matching, so that they are thread-safe. */
 2503 
 2504 typedef struct match_data {
 2505   unsigned long int match_call_count;      /* As it says */
 2506   unsigned long int match_limit;           /* As it says */
 2507   unsigned long int match_limit_recursion; /* As it says */
 2508   int   *offset_vector;           /* Offset vector */
 2509   int    offset_end;              /* One past the end */
 2510   int    offset_max;              /* The maximum usable for return data */
 2511   int    nltype;                  /* Newline type */
 2512   int    nllen;                   /* Newline string length */
 2513   int    name_count;              /* Number of names in name table */
 2514   int    name_entry_size;         /* Size of entry in names table */
 2515   unsigned int skip_arg_count;    /* For counting SKIP_ARGs */
 2516   unsigned int ignore_skip_arg;   /* For re-run when SKIP arg name not found */
 2517   pcre_uchar *name_table;         /* Table of names */
 2518   pcre_uchar nl[4];               /* Newline string when fixed */
 2519   const  pcre_uint8 *lcc;         /* Points to lower casing table */
 2520   const  pcre_uint8 *fcc;         /* Points to case-flipping table */
 2521   const  pcre_uint8 *ctypes;      /* Points to table of type maps */
 2522   BOOL   notbol;                  /* NOTBOL flag */
 2523   BOOL   noteol;                  /* NOTEOL flag */
 2524   BOOL   utf;                     /* UTF-8 / UTF-16 flag */
 2525   BOOL   jscript_compat;          /* JAVASCRIPT_COMPAT flag */
 2526   BOOL   use_ucp;                 /* PCRE_UCP flag */
 2527   BOOL   endonly;                 /* Dollar not before final \n */
 2528   BOOL   notempty;                /* Empty string match not wanted */
 2529   BOOL   notempty_atstart;        /* Empty string match at start not wanted */
 2530   BOOL   hitend;                  /* Hit the end of the subject at some point */
 2531   BOOL   bsr_anycrlf;             /* \R is just any CRLF, not full Unicode */
 2532   BOOL   hasthen;                 /* Pattern contains (*THEN) */
 2533   const  pcre_uchar *start_code;  /* For use when recursing */
 2534   PCRE_PUCHAR start_subject;      /* Start of the subject string */
 2535   PCRE_PUCHAR end_subject;        /* End of the subject string */
 2536   PCRE_PUCHAR start_match_ptr;    /* Start of matched string */
 2537   PCRE_PUCHAR end_match_ptr;      /* Subject position at end match */
 2538   PCRE_PUCHAR start_used_ptr;     /* Earliest consulted character */
 2539   int    partial;                 /* PARTIAL options */
 2540   int    end_offset_top;          /* Highwater mark at end of match */
 2541   pcre_int32 capture_last;        /* Most recent capture number + overflow flag */
 2542   int    start_offset;            /* The start offset value */
 2543   int    match_function_type;     /* Set for certain special calls of MATCH() */
 2544   eptrblock *eptrchain;           /* Chain of eptrblocks for tail recursions */
 2545   int    eptrn;                   /* Next free eptrblock */
 2546   recursion_info *recursive;      /* Linked list of recursion data */
 2547   void  *callout_data;            /* To pass back to callouts */
 2548   const  pcre_uchar *mark;        /* Mark pointer to pass back on success */
 2549   const  pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
 2550   const  pcre_uchar *once_target; /* Where to back up to for atomic groups */
 2551 #ifdef NO_RECURSE
 2552   void  *match_frames_base;       /* For remembering malloc'd frames */
 2553 #endif
 2554 } match_data;
 2555 
 2556 /* A similar structure is used for the same purpose by the DFA matching
 2557 functions. */
 2558 
 2559 typedef struct dfa_match_data {
 2560   const pcre_uchar *start_code;     /* Start of the compiled pattern */
 2561   const pcre_uchar *start_subject ; /* Start of the subject string */
 2562   const pcre_uchar *end_subject;    /* End of subject string */
 2563   const pcre_uchar *start_used_ptr; /* Earliest consulted character */
 2564   const pcre_uint8 *tables;         /* Character tables */
 2565   int   start_offset;               /* The start offset value */
 2566   int   moptions;                   /* Match options */
 2567   int   poptions;                   /* Pattern options */
 2568   int   nltype;                     /* Newline type */
 2569   int   nllen;                      /* Newline string length */
 2570   pcre_uchar nl[4];                 /* Newline string when fixed */
 2571   void *callout_data;               /* To pass back to callouts */
 2572   dfa_recursion_info *recursive;    /* Linked list of recursion data */
 2573 } dfa_match_data;
 2574 
 2575 /* Bit definitions for entries in the pcre_ctypes table. */
 2576 
 2577 #define ctype_space   0x01
 2578 #define ctype_letter  0x02
 2579 #define ctype_digit   0x04
 2580 #define ctype_xdigit  0x08
 2581 #define ctype_word    0x10   /* alphanumeric or '_' */
 2582 #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */
 2583 
 2584 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
 2585 of bits for a class map. Some classes are built by combining these tables. */
 2586 
 2587 #define cbit_space     0      /* [:space:] or \s */
 2588 #define cbit_xdigit   32      /* [:xdigit:] */
 2589 #define cbit_digit    64      /* [:digit:] or \d */
 2590 #define cbit_upper    96      /* [:upper:] */
 2591 #define cbit_lower   128      /* [:lower:] */
 2592 #define cbit_word    160      /* [:word:] or \w */
 2593 #define cbit_graph   192      /* [:graph:] */
 2594 #define cbit_print   224      /* [:print:] */
 2595 #define cbit_punct   256      /* [:punct:] */
 2596 #define cbit_cntrl   288      /* [:cntrl:] */
 2597 #define cbit_length  320      /* Length of the cbits table */
 2598 
 2599 /* Offsets of the various tables from the base tables pointer, and
 2600 total length. */
 2601 
 2602 #define lcc_offset      0
 2603 #define fcc_offset    256
 2604 #define cbits_offset  512
 2605 #define ctypes_offset (cbits_offset + cbit_length)
 2606 #define tables_length (ctypes_offset + 256)
 2607 
 2608 /* Internal function and data prefixes. */
 2609 
 2610 #if defined COMPILE_PCRE8
 2611 #ifndef PUBL
 2612 #define PUBL(name) pcre_##name
 2613 #endif
 2614 #ifndef PRIV
 2615 #define PRIV(name) _pcre_##name
 2616 #endif
 2617 #elif defined COMPILE_PCRE16
 2618 #ifndef PUBL
 2619 #define PUBL(name) pcre16_##name
 2620 #endif
 2621 #ifndef PRIV
 2622 #define PRIV(name) _pcre16_##name
 2623 #endif
 2624 #elif defined COMPILE_PCRE32
 2625 #ifndef PUBL
 2626 #define PUBL(name) pcre32_##name
 2627 #endif
 2628 #ifndef PRIV
 2629 #define PRIV(name) _pcre32_##name
 2630 #endif
 2631 #else
 2632 #error Unsupported compiling mode
 2633 #endif /* COMPILE_PCRE[8|16|32] */
 2634 
 2635 /* Layout of the UCP type table that translates property names into types and
 2636 codes. Each entry used to point directly to a name, but to reduce the number of
 2637 relocations in shared libraries, it now has an offset into a single string
 2638 instead. */
 2639 
 2640 typedef struct {
 2641   pcre_uint16 name_offset;
 2642   pcre_uint16 type;
 2643   pcre_uint16 value;
 2644 } ucp_type_table;
 2645 
 2646 
 2647 /* Internal shared data tables. These are tables that are used by more than one
 2648 of the exported public functions. They have to be "external" in the C sense,
 2649 but are not part of the PCRE public API. The data for these tables is in the
 2650 pcre_tables.c module. */
 2651 
 2652 #ifdef COMPILE_PCRE8
 2653 extern const int            PRIV(utf8_table1)[];
 2654 extern const int            PRIV(utf8_table1_size);
 2655 extern const int            PRIV(utf8_table2)[];
 2656 extern const int            PRIV(utf8_table3)[];
 2657 extern const pcre_uint8     PRIV(utf8_table4)[];
 2658 #endif /* COMPILE_PCRE8 */
 2659 
 2660 extern const char           PRIV(utt_names)[];
 2661 extern const ucp_type_table PRIV(utt)[];
 2662 extern const int            PRIV(utt_size);
 2663 
 2664 extern const pcre_uint8     PRIV(OP_lengths)[];
 2665 extern const pcre_uint8     PRIV(default_tables)[];
 2666 
 2667 extern const pcre_uint32    PRIV(hspace_list)[];
 2668 extern const pcre_uint32    PRIV(vspace_list)[];
 2669 
 2670 
 2671 /* Internal shared functions. These are functions that are used by more than
 2672 one of the exported public functions. They have to be "external" in the C
 2673 sense, but are not part of the PCRE public API. */
 2674 
 2675 /* String comparison functions. */
 2676 #if defined COMPILE_PCRE8
 2677 
 2678 #define STRCMP_UC_UC(str1, str2) \
 2679   strcmp((char *)(str1), (char *)(str2))
 2680 #define STRCMP_UC_C8(str1, str2) \
 2681   strcmp((char *)(str1), (str2))
 2682 #define STRNCMP_UC_UC(str1, str2, num) \
 2683   strncmp((char *)(str1), (char *)(str2), (num))
 2684 #define STRNCMP_UC_C8(str1, str2, num) \
 2685   strncmp((char *)(str1), (str2), (num))
 2686 #define STRLEN_UC(str) strlen((const char *)str)
 2687 
 2688 #elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
 2689 
 2690 extern int               PRIV(strcmp_uc_uc)(const pcre_uchar *,
 2691                            const pcre_uchar *);
 2692 extern int               PRIV(strcmp_uc_c8)(const pcre_uchar *,
 2693                            const char *);
 2694 extern int               PRIV(strncmp_uc_uc)(const pcre_uchar *,
 2695                            const pcre_uchar *, unsigned int num);
 2696 extern int               PRIV(strncmp_uc_c8)(const pcre_uchar *,
 2697                            const char *, unsigned int num);
 2698 extern unsigned int      PRIV(strlen_uc)(const pcre_uchar *str);
 2699 
 2700 #define STRCMP_UC_UC(str1, str2) \
 2701   PRIV(strcmp_uc_uc)((str1), (str2))
 2702 #define STRCMP_UC_C8(str1, str2) \
 2703   PRIV(strcmp_uc_c8)((str1), (str2))
 2704 #define STRNCMP_UC_UC(str1, str2, num) \
 2705   PRIV(strncmp_uc_uc)((str1), (str2), (num))
 2706 #define STRNCMP_UC_C8(str1, str2, num) \
 2707   PRIV(strncmp_uc_c8)((str1), (str2), (num))
 2708 #define STRLEN_UC(str) PRIV(strlen_uc)(str)
 2709 
 2710 #endif /* COMPILE_PCRE[8|16|32] */
 2711 
 2712 #if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
 2713 
 2714 #define STRCMP_UC_UC_TEST(str1, str2) STRCMP_UC_UC(str1, str2)
 2715 #define STRCMP_UC_C8_TEST(str1, str2) STRCMP_UC_C8(str1, str2)
 2716 
 2717 #elif defined COMPILE_PCRE32
 2718 
 2719 extern int               PRIV(strcmp_uc_uc_utf)(const pcre_uchar *,
 2720                            const pcre_uchar *);
 2721 extern int               PRIV(strcmp_uc_c8_utf)(const pcre_uchar *,
 2722                            const char *);
 2723 
 2724 #define STRCMP_UC_UC_TEST(str1, str2) \
 2725   (utf ? PRIV(strcmp_uc_uc_utf)((str1), (str2)) : PRIV(strcmp_uc_uc)((str1), (str2)))
 2726 #define STRCMP_UC_C8_TEST(str1, str2) \
 2727   (utf ? PRIV(strcmp_uc_c8_utf)((str1), (str2)) : PRIV(strcmp_uc_c8)((str1), (str2)))
 2728 
 2729 #endif /* COMPILE_PCRE[8|16|32] */
 2730 
 2731 extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
 2732 extern BOOL              PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
 2733                            int *, BOOL);
 2734 extern unsigned int      PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
 2735 extern int               PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
 2736 extern BOOL              PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
 2737                            int *, BOOL);
 2738 extern BOOL              PRIV(xclass)(pcre_uint32, const pcre_uchar *, BOOL);
 2739 
 2740 #ifdef SUPPORT_JIT
 2741 extern void              PRIV(jit_compile)(const REAL_PCRE *,
 2742                            PUBL(extra) *, int);
 2743 extern int               PRIV(jit_exec)(const PUBL(extra) *,
 2744                            const pcre_uchar *, int, int, int, int *, int);
 2745 extern void              PRIV(jit_free)(void *);
 2746 extern int               PRIV(jit_get_size)(void *);
 2747 extern const char*       PRIV(jit_get_target)(void);
 2748 #endif
 2749 
 2750 /* Unicode character database (UCD) */
 2751 
 2752 typedef struct {
 2753   pcre_uint8 script;     /* ucp_Arabic, etc. */
 2754   pcre_uint8 chartype;   /* ucp_Cc, etc. (general categories) */
 2755   pcre_uint8 gbprop;     /* ucp_gbControl, etc. (grapheme break property) */
 2756   pcre_uint8 caseset;    /* offset to multichar other cases or zero */
 2757   pcre_int32 other_case; /* offset to other case, or zero if none */
 2758 } ucd_record;
 2759 
 2760 extern const pcre_uint32 PRIV(ucd_caseless_sets)[];
 2761 extern const ucd_record  PRIV(ucd_records)[];
 2762 extern const pcre_uint8  PRIV(ucd_stage1)[];
 2763 extern const pcre_uint16 PRIV(ucd_stage2)[];
 2764 extern const pcre_uint32 PRIV(ucp_gentype)[];
 2765 extern const pcre_uint32 PRIV(ucp_gbtable)[];
 2766 #ifdef SUPPORT_JIT
 2767 extern const int         PRIV(ucp_typerange)[];
 2768 #endif
 2769 
 2770 #ifdef SUPPORT_UCP
 2771 /* UCD access macros */
 2772 
 2773 #define UCD_BLOCK_SIZE 128
 2774 #define GET_UCD(ch) (PRIV(ucd_records) + \
 2775         PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
 2776         UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
 2777 
 2778 #define UCD_CHARTYPE(ch)    GET_UCD(ch)->chartype
 2779 #define UCD_SCRIPT(ch)      GET_UCD(ch)->script
 2780 #define UCD_CATEGORY(ch)    PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
 2781 #define UCD_GRAPHBREAK(ch)  GET_UCD(ch)->gbprop
 2782 #define UCD_CASESET(ch)     GET_UCD(ch)->caseset
 2783 #define UCD_OTHERCASE(ch)   ((pcre_uint32)((int)ch + (int)(GET_UCD(ch)->other_case)))
 2784 
 2785 #endif /* SUPPORT_UCP */
 2786 
 2787 #endif
 2788 
 2789 /* End of pcre_internal.h */