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    1 /*************************************************
    2 *       Perl-Compatible Regular Expressions      *
    3 *************************************************/
    4 
    5 /* This is the public header file for the PCRE library, to be #included by
    6 applications that call the PCRE functions.
    7 
    8            Copyright (c) 1997-2014 University of Cambridge
    9 
   10 -----------------------------------------------------------------------------
   11 Redistribution and use in source and binary forms, with or without
   12 modification, are permitted provided that the following conditions are met:
   13 
   14     * Redistributions of source code must retain the above copyright notice,
   15       this list of conditions and the following disclaimer.
   16 
   17     * Redistributions in binary form must reproduce the above copyright
   18       notice, this list of conditions and the following disclaimer in the
   19       documentation and/or other materials provided with the distribution.
   20 
   21     * Neither the name of the University of Cambridge nor the names of its
   22       contributors may be used to endorse or promote products derived from
   23       this software without specific prior written permission.
   24 
   25 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   26 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   27 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   28 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   29 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35 POSSIBILITY OF SUCH DAMAGE.
   36 -----------------------------------------------------------------------------
   37 */
   38 
   39 #ifndef _PCRE_H
   40 #define _PCRE_H
   41 
   42 /* The current PCRE version information. */
   43 
   44 #define PCRE_MAJOR          @PCRE_MAJOR@
   45 #define PCRE_MINOR          @PCRE_MINOR@
   46 #define PCRE_PRERELEASE     @PCRE_PRERELEASE@
   47 #define PCRE_DATE           @PCRE_DATE@
   48 
   49 /* When an application links to a PCRE DLL in Windows, the symbols that are
   50 imported have to be identified as such. When building PCRE, the appropriate
   51 export setting is defined in pcre_internal.h, which includes this file. So we
   52 don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL. */
   53 
   54 #if defined(_WIN32) && !defined(PCRE_STATIC)
   55 #  ifndef PCRE_EXP_DECL
   56 #    define PCRE_EXP_DECL  extern __declspec(dllimport)
   57 #  endif
   58 #  ifdef __cplusplus
   59 #    ifndef PCRECPP_EXP_DECL
   60 #      define PCRECPP_EXP_DECL  extern __declspec(dllimport)
   61 #    endif
   62 #    ifndef PCRECPP_EXP_DEFN
   63 #      define PCRECPP_EXP_DEFN  __declspec(dllimport)
   64 #    endif
   65 #  endif
   66 #endif
   67 
   68 /* By default, we use the standard "extern" declarations. */
   69 
   70 #ifndef PCRE_EXP_DECL
   71 #  ifdef __cplusplus
   72 #    define PCRE_EXP_DECL  extern "C"
   73 #  else
   74 #    define PCRE_EXP_DECL  extern
   75 #  endif
   76 #endif
   77 
   78 #ifdef __cplusplus
   79 #  ifndef PCRECPP_EXP_DECL
   80 #    define PCRECPP_EXP_DECL  extern
   81 #  endif
   82 #  ifndef PCRECPP_EXP_DEFN
   83 #    define PCRECPP_EXP_DEFN
   84 #  endif
   85 #endif
   86 
   87 /* Have to include stdlib.h in order to ensure that size_t is defined;
   88 it is needed here for malloc. */
   89 
   90 #include <stdlib.h>
   91 
   92 /* Allow for C++ users */
   93 
   94 #ifdef __cplusplus
   95 extern "C" {
   96 #endif
   97 
   98 /* Public options. Some are compile-time only, some are run-time only, and some
   99 are both. Most of the compile-time options are saved with the compiled regex so
  100 that they can be inspected during studying (and therefore JIT compiling). Note
  101 that pcre_study() has its own set of options. Originally, all the options
  102 defined here used distinct bits. However, almost all the bits in a 32-bit word
  103 are now used, so in order to conserve them, option bits that were previously
  104 only recognized at matching time (i.e. by pcre_exec() or pcre_dfa_exec()) may
  105 also be used for compile-time options that affect only compiling and are not
  106 relevant for studying or JIT compiling.
  107 
  108 Some options for pcre_compile() change its behaviour but do not affect the
  109 behaviour of the execution functions. Other options are passed through to the
  110 execution functions and affect their behaviour, with or without affecting the
  111 behaviour of pcre_compile().
  112 
  113 Options that can be passed to pcre_compile() are tagged Cx below, with these
  114 variants:
  115 
  116 C1   Affects compile only
  117 C2   Does not affect compile; affects exec, dfa_exec
  118 C3   Affects compile, exec, dfa_exec
  119 C4   Affects compile, exec, dfa_exec, study
  120 C5   Affects compile, exec, study
  121 
  122 Options that can be set for pcre_exec() and/or pcre_dfa_exec() are flagged with
  123 E and D, respectively. They take precedence over C3, C4, and C5 settings passed
  124 from pcre_compile(). Those that are compatible with JIT execution are flagged
  125 with J. */
  126 
  127 #define PCRE_CASELESS           0x00000001  /* C1       */
  128 #define PCRE_MULTILINE          0x00000002  /* C1       */
  129 #define PCRE_DOTALL             0x00000004  /* C1       */
  130 #define PCRE_EXTENDED           0x00000008  /* C1       */
  131 #define PCRE_ANCHORED           0x00000010  /* C4 E D   */
  132 #define PCRE_DOLLAR_ENDONLY     0x00000020  /* C2       */
  133 #define PCRE_EXTRA              0x00000040  /* C1       */
  134 #define PCRE_NOTBOL             0x00000080  /*    E D J */
  135 #define PCRE_NOTEOL             0x00000100  /*    E D J */
  136 #define PCRE_UNGREEDY           0x00000200  /* C1       */
  137 #define PCRE_NOTEMPTY           0x00000400  /*    E D J */
  138 #define PCRE_UTF8               0x00000800  /* C4        )          */
  139 #define PCRE_UTF16              0x00000800  /* C4        ) Synonyms */
  140 #define PCRE_UTF32              0x00000800  /* C4        )          */
  141 #define PCRE_NO_AUTO_CAPTURE    0x00001000  /* C1       */
  142 #define PCRE_NO_UTF8_CHECK      0x00002000  /* C1 E D J  )          */
  143 #define PCRE_NO_UTF16_CHECK     0x00002000  /* C1 E D J  ) Synonyms */
  144 #define PCRE_NO_UTF32_CHECK     0x00002000  /* C1 E D J  )          */
  145 #define PCRE_AUTO_CALLOUT       0x00004000  /* C1       */
  146 #define PCRE_PARTIAL_SOFT       0x00008000  /*    E D J  ) Synonyms */
  147 #define PCRE_PARTIAL            0x00008000  /*    E D J  )          */
  148 
  149 /* This pair use the same bit. */
  150 #define PCRE_NEVER_UTF          0x00010000  /* C1        ) Overlaid */
  151 #define PCRE_DFA_SHORTEST       0x00010000  /*      D    ) Overlaid */
  152 
  153 /* This pair use the same bit. */
  154 #define PCRE_NO_AUTO_POSSESS    0x00020000  /* C1        ) Overlaid */
  155 #define PCRE_DFA_RESTART        0x00020000  /*      D    ) Overlaid */
  156 
  157 #define PCRE_FIRSTLINE          0x00040000  /* C3       */
  158 #define PCRE_DUPNAMES           0x00080000  /* C1       */
  159 #define PCRE_NEWLINE_CR         0x00100000  /* C3 E D   */
  160 #define PCRE_NEWLINE_LF         0x00200000  /* C3 E D   */
  161 #define PCRE_NEWLINE_CRLF       0x00300000  /* C3 E D   */
  162 #define PCRE_NEWLINE_ANY        0x00400000  /* C3 E D   */
  163 #define PCRE_NEWLINE_ANYCRLF    0x00500000  /* C3 E D   */
  164 #define PCRE_BSR_ANYCRLF        0x00800000  /* C3 E D   */
  165 #define PCRE_BSR_UNICODE        0x01000000  /* C3 E D   */
  166 #define PCRE_JAVASCRIPT_COMPAT  0x02000000  /* C5       */
  167 #define PCRE_NO_START_OPTIMIZE  0x04000000  /* C2 E D    ) Synonyms */
  168 #define PCRE_NO_START_OPTIMISE  0x04000000  /* C2 E D    )          */
  169 #define PCRE_PARTIAL_HARD       0x08000000  /*    E D J */
  170 #define PCRE_NOTEMPTY_ATSTART   0x10000000  /*    E D J */
  171 #define PCRE_UCP                0x20000000  /* C3       */
  172 
  173 /* Exec-time and get/set-time error codes */
  174 
  175 #define PCRE_ERROR_NOMATCH          (-1)
  176 #define PCRE_ERROR_NULL             (-2)
  177 #define PCRE_ERROR_BADOPTION        (-3)
  178 #define PCRE_ERROR_BADMAGIC         (-4)
  179 #define PCRE_ERROR_UNKNOWN_OPCODE   (-5)
  180 #define PCRE_ERROR_UNKNOWN_NODE     (-5)  /* For backward compatibility */
  181 #define PCRE_ERROR_NOMEMORY         (-6)
  182 #define PCRE_ERROR_NOSUBSTRING      (-7)
  183 #define PCRE_ERROR_MATCHLIMIT       (-8)
  184 #define PCRE_ERROR_CALLOUT          (-9)  /* Never used by PCRE itself */
  185 #define PCRE_ERROR_BADUTF8         (-10)  /* Same for 8/16/32 */
  186 #define PCRE_ERROR_BADUTF16        (-10)  /* Same for 8/16/32 */
  187 #define PCRE_ERROR_BADUTF32        (-10)  /* Same for 8/16/32 */
  188 #define PCRE_ERROR_BADUTF8_OFFSET  (-11)  /* Same for 8/16 */
  189 #define PCRE_ERROR_BADUTF16_OFFSET (-11)  /* Same for 8/16 */
  190 #define PCRE_ERROR_PARTIAL         (-12)
  191 #define PCRE_ERROR_BADPARTIAL      (-13)
  192 #define PCRE_ERROR_INTERNAL        (-14)
  193 #define PCRE_ERROR_BADCOUNT        (-15)
  194 #define PCRE_ERROR_DFA_UITEM       (-16)
  195 #define PCRE_ERROR_DFA_UCOND       (-17)
  196 #define PCRE_ERROR_DFA_UMLIMIT     (-18)
  197 #define PCRE_ERROR_DFA_WSSIZE      (-19)
  198 #define PCRE_ERROR_DFA_RECURSE     (-20)
  199 #define PCRE_ERROR_RECURSIONLIMIT  (-21)
  200 #define PCRE_ERROR_NULLWSLIMIT     (-22)  /* No longer actually used */
  201 #define PCRE_ERROR_BADNEWLINE      (-23)
  202 #define PCRE_ERROR_BADOFFSET       (-24)
  203 #define PCRE_ERROR_SHORTUTF8       (-25)
  204 #define PCRE_ERROR_SHORTUTF16      (-25)  /* Same for 8/16 */
  205 #define PCRE_ERROR_RECURSELOOP     (-26)
  206 #define PCRE_ERROR_JIT_STACKLIMIT  (-27)
  207 #define PCRE_ERROR_BADMODE         (-28)
  208 #define PCRE_ERROR_BADENDIANNESS   (-29)
  209 #define PCRE_ERROR_DFA_BADRESTART  (-30)
  210 #define PCRE_ERROR_JIT_BADOPTION   (-31)
  211 #define PCRE_ERROR_BADLENGTH       (-32)
  212 #define PCRE_ERROR_UNSET           (-33)
  213 
  214 /* Specific error codes for UTF-8 validity checks */
  215 
  216 #define PCRE_UTF8_ERR0               0
  217 #define PCRE_UTF8_ERR1               1
  218 #define PCRE_UTF8_ERR2               2
  219 #define PCRE_UTF8_ERR3               3
  220 #define PCRE_UTF8_ERR4               4
  221 #define PCRE_UTF8_ERR5               5
  222 #define PCRE_UTF8_ERR6               6
  223 #define PCRE_UTF8_ERR7               7
  224 #define PCRE_UTF8_ERR8               8
  225 #define PCRE_UTF8_ERR9               9
  226 #define PCRE_UTF8_ERR10             10
  227 #define PCRE_UTF8_ERR11             11
  228 #define PCRE_UTF8_ERR12             12
  229 #define PCRE_UTF8_ERR13             13
  230 #define PCRE_UTF8_ERR14             14
  231 #define PCRE_UTF8_ERR15             15
  232 #define PCRE_UTF8_ERR16             16
  233 #define PCRE_UTF8_ERR17             17
  234 #define PCRE_UTF8_ERR18             18
  235 #define PCRE_UTF8_ERR19             19
  236 #define PCRE_UTF8_ERR20             20
  237 #define PCRE_UTF8_ERR21             21
  238 #define PCRE_UTF8_ERR22             22  /* Unused (was non-character) */
  239 
  240 /* Specific error codes for UTF-16 validity checks */
  241 
  242 #define PCRE_UTF16_ERR0              0
  243 #define PCRE_UTF16_ERR1              1
  244 #define PCRE_UTF16_ERR2              2
  245 #define PCRE_UTF16_ERR3              3
  246 #define PCRE_UTF16_ERR4              4  /* Unused (was non-character) */
  247 
  248 /* Specific error codes for UTF-32 validity checks */
  249 
  250 #define PCRE_UTF32_ERR0              0
  251 #define PCRE_UTF32_ERR1              1
  252 #define PCRE_UTF32_ERR2              2  /* Unused (was non-character) */
  253 #define PCRE_UTF32_ERR3              3
  254 
  255 /* Request types for pcre_fullinfo() */
  256 
  257 #define PCRE_INFO_OPTIONS            0
  258 #define PCRE_INFO_SIZE               1
  259 #define PCRE_INFO_CAPTURECOUNT       2
  260 #define PCRE_INFO_BACKREFMAX         3
  261 #define PCRE_INFO_FIRSTBYTE          4
  262 #define PCRE_INFO_FIRSTCHAR          4  /* For backwards compatibility */
  263 #define PCRE_INFO_FIRSTTABLE         5
  264 #define PCRE_INFO_LASTLITERAL        6
  265 #define PCRE_INFO_NAMEENTRYSIZE      7
  266 #define PCRE_INFO_NAMECOUNT          8
  267 #define PCRE_INFO_NAMETABLE          9
  268 #define PCRE_INFO_STUDYSIZE         10
  269 #define PCRE_INFO_DEFAULT_TABLES    11
  270 #define PCRE_INFO_OKPARTIAL         12
  271 #define PCRE_INFO_JCHANGED          13
  272 #define PCRE_INFO_HASCRORLF         14
  273 #define PCRE_INFO_MINLENGTH         15
  274 #define PCRE_INFO_JIT               16
  275 #define PCRE_INFO_JITSIZE           17
  276 #define PCRE_INFO_MAXLOOKBEHIND     18
  277 #define PCRE_INFO_FIRSTCHARACTER    19
  278 #define PCRE_INFO_FIRSTCHARACTERFLAGS 20
  279 #define PCRE_INFO_REQUIREDCHAR      21
  280 #define PCRE_INFO_REQUIREDCHARFLAGS 22
  281 #define PCRE_INFO_MATCHLIMIT        23
  282 #define PCRE_INFO_RECURSIONLIMIT    24
  283 #define PCRE_INFO_MATCH_EMPTY       25
  284 
  285 /* Request types for pcre_config(). Do not re-arrange, in order to remain
  286 compatible. */
  287 
  288 #define PCRE_CONFIG_UTF8                    0
  289 #define PCRE_CONFIG_NEWLINE                 1
  290 #define PCRE_CONFIG_LINK_SIZE               2
  291 #define PCRE_CONFIG_POSIX_MALLOC_THRESHOLD  3
  292 #define PCRE_CONFIG_MATCH_LIMIT             4
  293 #define PCRE_CONFIG_STACKRECURSE            5
  294 #define PCRE_CONFIG_UNICODE_PROPERTIES      6
  295 #define PCRE_CONFIG_MATCH_LIMIT_RECURSION   7
  296 #define PCRE_CONFIG_BSR                     8
  297 #define PCRE_CONFIG_JIT                     9
  298 #define PCRE_CONFIG_UTF16                  10
  299 #define PCRE_CONFIG_JITTARGET              11
  300 #define PCRE_CONFIG_UTF32                  12
  301 #define PCRE_CONFIG_PARENS_LIMIT           13
  302 
  303 /* Request types for pcre_study(). Do not re-arrange, in order to remain
  304 compatible. */
  305 
  306 #define PCRE_STUDY_JIT_COMPILE                0x0001
  307 #define PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE   0x0002
  308 #define PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE   0x0004
  309 #define PCRE_STUDY_EXTRA_NEEDED               0x0008
  310 
  311 /* Bit flags for the pcre[16|32]_extra structure. Do not re-arrange or redefine
  312 these bits, just add new ones on the end, in order to remain compatible. */
  313 
  314 #define PCRE_EXTRA_STUDY_DATA             0x0001
  315 #define PCRE_EXTRA_MATCH_LIMIT            0x0002
  316 #define PCRE_EXTRA_CALLOUT_DATA           0x0004
  317 #define PCRE_EXTRA_TABLES                 0x0008
  318 #define PCRE_EXTRA_MATCH_LIMIT_RECURSION  0x0010
  319 #define PCRE_EXTRA_MARK                   0x0020
  320 #define PCRE_EXTRA_EXECUTABLE_JIT         0x0040
  321 
  322 /* Types */
  323 
  324 struct real_pcre8_or_16;          /* declaration; the definition is private  */
  325 typedef struct real_pcre8_or_16 pcre;
  326 
  327 struct real_pcre8_or_16;          /* declaration; the definition is private  */
  328 typedef struct real_pcre8_or_16 pcre16;
  329 
  330 struct real_pcre32;               /* declaration; the definition is private  */
  331 typedef struct real_pcre32 pcre32;
  332 
  333 struct real_pcre_jit_stack;       /* declaration; the definition is private  */
  334 typedef struct real_pcre_jit_stack pcre_jit_stack;
  335 
  336 struct real_pcre16_jit_stack;     /* declaration; the definition is private  */
  337 typedef struct real_pcre16_jit_stack pcre16_jit_stack;
  338 
  339 struct real_pcre32_jit_stack;     /* declaration; the definition is private  */
  340 typedef struct real_pcre32_jit_stack pcre32_jit_stack;
  341 
  342 /* If PCRE is compiled with 16 bit character support, PCRE_UCHAR16 must contain
  343 a 16 bit wide signed data type. Otherwise it can be a dummy data type since
  344 pcre16 functions are not implemented. There is a check for this in pcre_internal.h. */
  345 #ifndef PCRE_UCHAR16
  346 #define PCRE_UCHAR16 unsigned short
  347 #endif
  348 
  349 #ifndef PCRE_SPTR16
  350 #define PCRE_SPTR16 const PCRE_UCHAR16 *
  351 #endif
  352 
  353 /* If PCRE is compiled with 32 bit character support, PCRE_UCHAR32 must contain
  354 a 32 bit wide signed data type. Otherwise it can be a dummy data type since
  355 pcre32 functions are not implemented. There is a check for this in pcre_internal.h. */
  356 #ifndef PCRE_UCHAR32
  357 #define PCRE_UCHAR32 unsigned int
  358 #endif
  359 
  360 #ifndef PCRE_SPTR32
  361 #define PCRE_SPTR32 const PCRE_UCHAR32 *
  362 #endif
  363 
  364 /* When PCRE is compiled as a C++ library, the subject pointer type can be
  365 replaced with a custom type. For conventional use, the public interface is a
  366 const char *. */
  367 
  368 #ifndef PCRE_SPTR
  369 #define PCRE_SPTR const char *
  370 #endif
  371 
  372 /* The structure for passing additional data to pcre_exec(). This is defined in
  373 such as way as to be extensible. Always add new fields at the end, in order to
  374 remain compatible. */
  375 
  376 typedef struct pcre_extra {
  377   unsigned long int flags;        /* Bits for which fields are set */
  378   void *study_data;               /* Opaque data from pcre_study() */
  379   unsigned long int match_limit;  /* Maximum number of calls to match() */
  380   void *callout_data;             /* Data passed back in callouts */
  381   const unsigned char *tables;    /* Pointer to character tables */
  382   unsigned long int match_limit_recursion; /* Max recursive calls to match() */
  383   unsigned char **mark;           /* For passing back a mark pointer */
  384   void *executable_jit;           /* Contains a pointer to a compiled jit code */
  385 } pcre_extra;
  386 
  387 /* Same structure as above, but with 16 bit char pointers. */
  388 
  389 typedef struct pcre16_extra {
  390   unsigned long int flags;        /* Bits for which fields are set */
  391   void *study_data;               /* Opaque data from pcre_study() */
  392   unsigned long int match_limit;  /* Maximum number of calls to match() */
  393   void *callout_data;             /* Data passed back in callouts */
  394   const unsigned char *tables;    /* Pointer to character tables */
  395   unsigned long int match_limit_recursion; /* Max recursive calls to match() */
  396   PCRE_UCHAR16 **mark;            /* For passing back a mark pointer */
  397   void *executable_jit;           /* Contains a pointer to a compiled jit code */
  398 } pcre16_extra;
  399 
  400 /* Same structure as above, but with 32 bit char pointers. */
  401 
  402 typedef struct pcre32_extra {
  403   unsigned long int flags;        /* Bits for which fields are set */
  404   void *study_data;               /* Opaque data from pcre_study() */
  405   unsigned long int match_limit;  /* Maximum number of calls to match() */
  406   void *callout_data;             /* Data passed back in callouts */
  407   const unsigned char *tables;    /* Pointer to character tables */
  408   unsigned long int match_limit_recursion; /* Max recursive calls to match() */
  409   PCRE_UCHAR32 **mark;            /* For passing back a mark pointer */
  410   void *executable_jit;           /* Contains a pointer to a compiled jit code */
  411 } pcre32_extra;
  412 
  413 /* The structure for passing out data via the pcre_callout_function. We use a
  414 structure so that new fields can be added on the end in future versions,
  415 without changing the API of the function, thereby allowing old clients to work
  416 without modification. */
  417 
  418 typedef struct pcre_callout_block {
  419   int          version;           /* Identifies version of block */
  420   /* ------------------------ Version 0 ------------------------------- */
  421   int          callout_number;    /* Number compiled into pattern */
  422   int         *offset_vector;     /* The offset vector */
  423   PCRE_SPTR    subject;           /* The subject being matched */
  424   int          subject_length;    /* The length of the subject */
  425   int          start_match;       /* Offset to start of this match attempt */
  426   int          current_position;  /* Where we currently are in the subject */
  427   int          capture_top;       /* Max current capture */
  428   int          capture_last;      /* Most recently closed capture */
  429   void        *callout_data;      /* Data passed in with the call */
  430   /* ------------------- Added for Version 1 -------------------------- */
  431   int          pattern_position;  /* Offset to next item in the pattern */
  432   int          next_item_length;  /* Length of next item in the pattern */
  433   /* ------------------- Added for Version 2 -------------------------- */
  434   const unsigned char *mark;      /* Pointer to current mark or NULL    */
  435   /* ------------------------------------------------------------------ */
  436 } pcre_callout_block;
  437 
  438 /* Same structure as above, but with 16 bit char pointers. */
  439 
  440 typedef struct pcre16_callout_block {
  441   int          version;           /* Identifies version of block */
  442   /* ------------------------ Version 0 ------------------------------- */
  443   int          callout_number;    /* Number compiled into pattern */
  444   int         *offset_vector;     /* The offset vector */
  445   PCRE_SPTR16  subject;           /* The subject being matched */
  446   int          subject_length;    /* The length of the subject */
  447   int          start_match;       /* Offset to start of this match attempt */
  448   int          current_position;  /* Where we currently are in the subject */
  449   int          capture_top;       /* Max current capture */
  450   int          capture_last;      /* Most recently closed capture */
  451   void        *callout_data;      /* Data passed in with the call */
  452   /* ------------------- Added for Version 1 -------------------------- */
  453   int          pattern_position;  /* Offset to next item in the pattern */
  454   int          next_item_length;  /* Length of next item in the pattern */
  455   /* ------------------- Added for Version 2 -------------------------- */
  456   const PCRE_UCHAR16 *mark;       /* Pointer to current mark or NULL    */
  457   /* ------------------------------------------------------------------ */
  458 } pcre16_callout_block;
  459 
  460 /* Same structure as above, but with 32 bit char pointers. */
  461 
  462 typedef struct pcre32_callout_block {
  463   int          version;           /* Identifies version of block */
  464   /* ------------------------ Version 0 ------------------------------- */
  465   int          callout_number;    /* Number compiled into pattern */
  466   int         *offset_vector;     /* The offset vector */
  467   PCRE_SPTR32  subject;           /* The subject being matched */
  468   int          subject_length;    /* The length of the subject */
  469   int          start_match;       /* Offset to start of this match attempt */
  470   int          current_position;  /* Where we currently are in the subject */
  471   int          capture_top;       /* Max current capture */
  472   int          capture_last;      /* Most recently closed capture */
  473   void        *callout_data;      /* Data passed in with the call */
  474   /* ------------------- Added for Version 1 -------------------------- */
  475   int          pattern_position;  /* Offset to next item in the pattern */
  476   int          next_item_length;  /* Length of next item in the pattern */
  477   /* ------------------- Added for Version 2 -------------------------- */
  478   const PCRE_UCHAR32 *mark;       /* Pointer to current mark or NULL    */
  479   /* ------------------------------------------------------------------ */
  480 } pcre32_callout_block;
  481 
  482 /* Indirection for store get and free functions. These can be set to
  483 alternative malloc/free functions if required. Special ones are used in the
  484 non-recursive case for "frames". There is also an optional callout function
  485 that is triggered by the (?) regex item. For Virtual Pascal, these definitions
  486 have to take another form. */
  487 
  488 #ifndef VPCOMPAT
  489 PCRE_EXP_DECL void *(*pcre_malloc)(size_t);
  490 PCRE_EXP_DECL void  (*pcre_free)(void *);
  491 PCRE_EXP_DECL void *(*pcre_stack_malloc)(size_t);
  492 PCRE_EXP_DECL void  (*pcre_stack_free)(void *);
  493 PCRE_EXP_DECL int   (*pcre_callout)(pcre_callout_block *);
  494 PCRE_EXP_DECL int   (*pcre_stack_guard)(void);
  495 
  496 PCRE_EXP_DECL void *(*pcre16_malloc)(size_t);
  497 PCRE_EXP_DECL void  (*pcre16_free)(void *);
  498 PCRE_EXP_DECL void *(*pcre16_stack_malloc)(size_t);
  499 PCRE_EXP_DECL void  (*pcre16_stack_free)(void *);
  500 PCRE_EXP_DECL int   (*pcre16_callout)(pcre16_callout_block *);
  501 PCRE_EXP_DECL int   (*pcre16_stack_guard)(void);
  502 
  503 PCRE_EXP_DECL void *(*pcre32_malloc)(size_t);
  504 PCRE_EXP_DECL void  (*pcre32_free)(void *);
  505 PCRE_EXP_DECL void *(*pcre32_stack_malloc)(size_t);
  506 PCRE_EXP_DECL void  (*pcre32_stack_free)(void *);
  507 PCRE_EXP_DECL int   (*pcre32_callout)(pcre32_callout_block *);
  508 PCRE_EXP_DECL int   (*pcre32_stack_guard)(void);
  509 #else   /* VPCOMPAT */
  510 PCRE_EXP_DECL void *pcre_malloc(size_t);
  511 PCRE_EXP_DECL void  pcre_free(void *);
  512 PCRE_EXP_DECL void *pcre_stack_malloc(size_t);
  513 PCRE_EXP_DECL void  pcre_stack_free(void *);
  514 PCRE_EXP_DECL int   pcre_callout(pcre_callout_block *);
  515 PCRE_EXP_DECL int   pcre_stack_guard(void);
  516 
  517 PCRE_EXP_DECL void *pcre16_malloc(size_t);
  518 PCRE_EXP_DECL void  pcre16_free(void *);
  519 PCRE_EXP_DECL void *pcre16_stack_malloc(size_t);
  520 PCRE_EXP_DECL void  pcre16_stack_free(void *);
  521 PCRE_EXP_DECL int   pcre16_callout(pcre16_callout_block *);
  522 PCRE_EXP_DECL int   pcre16_stack_guard(void);
  523 
  524 PCRE_EXP_DECL void *pcre32_malloc(size_t);
  525 PCRE_EXP_DECL void  pcre32_free(void *);
  526 PCRE_EXP_DECL void *pcre32_stack_malloc(size_t);
  527 PCRE_EXP_DECL void  pcre32_stack_free(void *);
  528 PCRE_EXP_DECL int   pcre32_callout(pcre32_callout_block *);
  529 PCRE_EXP_DECL int   pcre32_stack_guard(void);
  530 #endif  /* VPCOMPAT */
  531 
  532 /* User defined callback which provides a stack just before the match starts. */
  533 
  534 typedef pcre_jit_stack *(*pcre_jit_callback)(void *);
  535 typedef pcre16_jit_stack *(*pcre16_jit_callback)(void *);
  536 typedef pcre32_jit_stack *(*pcre32_jit_callback)(void *);
  537 
  538 /* Exported PCRE functions */
  539 
  540 PCRE_EXP_DECL pcre *pcre_compile(const char *, int, const char **, int *,
  541                   const unsigned char *);
  542 PCRE_EXP_DECL pcre16 *pcre16_compile(PCRE_SPTR16, int, const char **, int *,
  543                   const unsigned char *);
  544 PCRE_EXP_DECL pcre32 *pcre32_compile(PCRE_SPTR32, int, const char **, int *,
  545                   const unsigned char *);
  546 PCRE_EXP_DECL pcre *pcre_compile2(const char *, int, int *, const char **,
  547                   int *, const unsigned char *);
  548 PCRE_EXP_DECL pcre16 *pcre16_compile2(PCRE_SPTR16, int, int *, const char **,
  549                   int *, const unsigned char *);
  550 PCRE_EXP_DECL pcre32 *pcre32_compile2(PCRE_SPTR32, int, int *, const char **,
  551                   int *, const unsigned char *);
  552 PCRE_EXP_DECL int  pcre_config(int, void *);
  553 PCRE_EXP_DECL int  pcre16_config(int, void *);
  554 PCRE_EXP_DECL int  pcre32_config(int, void *);
  555 PCRE_EXP_DECL int  pcre_copy_named_substring(const pcre *, const char *,
  556                   int *, int, const char *, char *, int);
  557 PCRE_EXP_DECL int  pcre16_copy_named_substring(const pcre16 *, PCRE_SPTR16,
  558                   int *, int, PCRE_SPTR16, PCRE_UCHAR16 *, int);
  559 PCRE_EXP_DECL int  pcre32_copy_named_substring(const pcre32 *, PCRE_SPTR32,
  560                   int *, int, PCRE_SPTR32, PCRE_UCHAR32 *, int);
  561 PCRE_EXP_DECL int  pcre_copy_substring(const char *, int *, int, int,
  562                   char *, int);
  563 PCRE_EXP_DECL int  pcre16_copy_substring(PCRE_SPTR16, int *, int, int,
  564                   PCRE_UCHAR16 *, int);
  565 PCRE_EXP_DECL int  pcre32_copy_substring(PCRE_SPTR32, int *, int, int,
  566                   PCRE_UCHAR32 *, int);
  567 PCRE_EXP_DECL int  pcre_dfa_exec(const pcre *, const pcre_extra *,
  568                   const char *, int, int, int, int *, int , int *, int);
  569 PCRE_EXP_DECL int  pcre16_dfa_exec(const pcre16 *, const pcre16_extra *,
  570                   PCRE_SPTR16, int, int, int, int *, int , int *, int);
  571 PCRE_EXP_DECL int  pcre32_dfa_exec(const pcre32 *, const pcre32_extra *,
  572                   PCRE_SPTR32, int, int, int, int *, int , int *, int);
  573 PCRE_EXP_DECL int  pcre_exec(const pcre *, const pcre_extra *, PCRE_SPTR,
  574                    int, int, int, int *, int);
  575 PCRE_EXP_DECL int  pcre16_exec(const pcre16 *, const pcre16_extra *,
  576                    PCRE_SPTR16, int, int, int, int *, int);
  577 PCRE_EXP_DECL int  pcre32_exec(const pcre32 *, const pcre32_extra *,
  578                    PCRE_SPTR32, int, int, int, int *, int);
  579 PCRE_EXP_DECL int  pcre_jit_exec(const pcre *, const pcre_extra *,
  580                    PCRE_SPTR, int, int, int, int *, int,
  581                    pcre_jit_stack *);
  582 PCRE_EXP_DECL int  pcre16_jit_exec(const pcre16 *, const pcre16_extra *,
  583                    PCRE_SPTR16, int, int, int, int *, int,
  584                    pcre16_jit_stack *);
  585 PCRE_EXP_DECL int  pcre32_jit_exec(const pcre32 *, const pcre32_extra *,
  586                    PCRE_SPTR32, int, int, int, int *, int,
  587                    pcre32_jit_stack *);
  588 PCRE_EXP_DECL void pcre_free_substring(const char *);
  589 PCRE_EXP_DECL void pcre16_free_substring(PCRE_SPTR16);
  590 PCRE_EXP_DECL void pcre32_free_substring(PCRE_SPTR32);
  591 PCRE_EXP_DECL void pcre_free_substring_list(const char **);
  592 PCRE_EXP_DECL void pcre16_free_substring_list(PCRE_SPTR16 *);
  593 PCRE_EXP_DECL void pcre32_free_substring_list(PCRE_SPTR32 *);
  594 PCRE_EXP_DECL int  pcre_fullinfo(const pcre *, const pcre_extra *, int,
  595                   void *);
  596 PCRE_EXP_DECL int  pcre16_fullinfo(const pcre16 *, const pcre16_extra *, int,
  597                   void *);
  598 PCRE_EXP_DECL int  pcre32_fullinfo(const pcre32 *, const pcre32_extra *, int,
  599                   void *);
  600 PCRE_EXP_DECL int  pcre_get_named_substring(const pcre *, const char *,
  601                   int *, int, const char *, const char **);
  602 PCRE_EXP_DECL int  pcre16_get_named_substring(const pcre16 *, PCRE_SPTR16,
  603                   int *, int, PCRE_SPTR16, PCRE_SPTR16 *);
  604 PCRE_EXP_DECL int  pcre32_get_named_substring(const pcre32 *, PCRE_SPTR32,
  605                   int *, int, PCRE_SPTR32, PCRE_SPTR32 *);
  606 PCRE_EXP_DECL int  pcre_get_stringnumber(const pcre *, const char *);
  607 PCRE_EXP_DECL int  pcre16_get_stringnumber(const pcre16 *, PCRE_SPTR16);
  608 PCRE_EXP_DECL int  pcre32_get_stringnumber(const pcre32 *, PCRE_SPTR32);
  609 PCRE_EXP_DECL int  pcre_get_stringtable_entries(const pcre *, const char *,
  610                   char **, char **);
  611 PCRE_EXP_DECL int  pcre16_get_stringtable_entries(const pcre16 *, PCRE_SPTR16,
  612                   PCRE_UCHAR16 **, PCRE_UCHAR16 **);
  613 PCRE_EXP_DECL int  pcre32_get_stringtable_entries(const pcre32 *, PCRE_SPTR32,
  614                   PCRE_UCHAR32 **, PCRE_UCHAR32 **);
  615 PCRE_EXP_DECL int  pcre_get_substring(const char *, int *, int, int,
  616                   const char **);
  617 PCRE_EXP_DECL int  pcre16_get_substring(PCRE_SPTR16, int *, int, int,
  618                   PCRE_SPTR16 *);
  619 PCRE_EXP_DECL int  pcre32_get_substring(PCRE_SPTR32, int *, int, int,
  620                   PCRE_SPTR32 *);
  621 PCRE_EXP_DECL int  pcre_get_substring_list(const char *, int *, int,
  622                   const char ***);
  623 PCRE_EXP_DECL int  pcre16_get_substring_list(PCRE_SPTR16, int *, int,
  624                   PCRE_SPTR16 **);
  625 PCRE_EXP_DECL int  pcre32_get_substring_list(PCRE_SPTR32, int *, int,
  626                   PCRE_SPTR32 **);
  627 PCRE_EXP_DECL const unsigned char *pcre_maketables(void);
  628 PCRE_EXP_DECL const unsigned char *pcre16_maketables(void);
  629 PCRE_EXP_DECL const unsigned char *pcre32_maketables(void);
  630 PCRE_EXP_DECL int  pcre_refcount(pcre *, int);
  631 PCRE_EXP_DECL int  pcre16_refcount(pcre16 *, int);
  632 PCRE_EXP_DECL int  pcre32_refcount(pcre32 *, int);
  633 PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
  634 PCRE_EXP_DECL pcre16_extra *pcre16_study(const pcre16 *, int, const char **);
  635 PCRE_EXP_DECL pcre32_extra *pcre32_study(const pcre32 *, int, const char **);
  636 PCRE_EXP_DECL void pcre_free_study(pcre_extra *);
  637 PCRE_EXP_DECL void pcre16_free_study(pcre16_extra *);
  638 PCRE_EXP_DECL void pcre32_free_study(pcre32_extra *);
  639 PCRE_EXP_DECL const char *pcre_version(void);
  640 PCRE_EXP_DECL const char *pcre16_version(void);
  641 PCRE_EXP_DECL const char *pcre32_version(void);
  642 
  643 /* Utility functions for byte order swaps. */
  644 PCRE_EXP_DECL int  pcre_pattern_to_host_byte_order(pcre *, pcre_extra *,
  645                   const unsigned char *);
  646 PCRE_EXP_DECL int  pcre16_pattern_to_host_byte_order(pcre16 *, pcre16_extra *,
  647                   const unsigned char *);
  648 PCRE_EXP_DECL int  pcre32_pattern_to_host_byte_order(pcre32 *, pcre32_extra *,
  649                   const unsigned char *);
  650 PCRE_EXP_DECL int  pcre16_utf16_to_host_byte_order(PCRE_UCHAR16 *,
  651                   PCRE_SPTR16, int, int *, int);
  652 PCRE_EXP_DECL int  pcre32_utf32_to_host_byte_order(PCRE_UCHAR32 *,
  653                   PCRE_SPTR32, int, int *, int);
  654 
  655 /* JIT compiler related functions. */
  656 
  657 PCRE_EXP_DECL pcre_jit_stack *pcre_jit_stack_alloc(int, int);
  658 PCRE_EXP_DECL pcre16_jit_stack *pcre16_jit_stack_alloc(int, int);
  659 PCRE_EXP_DECL pcre32_jit_stack *pcre32_jit_stack_alloc(int, int);
  660 PCRE_EXP_DECL void pcre_jit_stack_free(pcre_jit_stack *);
  661 PCRE_EXP_DECL void pcre16_jit_stack_free(pcre16_jit_stack *);
  662 PCRE_EXP_DECL void pcre32_jit_stack_free(pcre32_jit_stack *);
  663 PCRE_EXP_DECL void pcre_assign_jit_stack(pcre_extra *,
  664                   pcre_jit_callback, void *);
  665 PCRE_EXP_DECL void pcre16_assign_jit_stack(pcre16_extra *,
  666                   pcre16_jit_callback, void *);
  667 PCRE_EXP_DECL void pcre32_assign_jit_stack(pcre32_extra *,
  668                   pcre32_jit_callback, void *);
  669 PCRE_EXP_DECL void pcre_jit_free_unused_memory(void);
  670 PCRE_EXP_DECL void pcre16_jit_free_unused_memory(void);
  671 PCRE_EXP_DECL void pcre32_jit_free_unused_memory(void);
  672 
  673 #ifdef __cplusplus
  674 }  /* extern "C" */
  675 #endif
  676 
  677 #endif /* End of pcre.h */