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    1 /*************************************************
    2 *       Perl-Compatible Regular Expressions      *
    3 *************************************************/
    4 
    5 #ifndef _PCREPOSIX_H
    6 #define _PCREPOSIX_H
    7 
    8 /* This is the header for the POSIX wrapper interface to the PCRE Perl-
    9 Compatible Regular Expression library. It defines the things POSIX says should
   10 be there. I hope.
   11 
   12             Copyright (c) 1997-2012 University of Cambridge
   13 
   14 -----------------------------------------------------------------------------
   15 Redistribution and use in source and binary forms, with or without
   16 modification, are permitted provided that the following conditions are met:
   17 
   18     * Redistributions of source code must retain the above copyright notice,
   19       this list of conditions and the following disclaimer.
   20 
   21     * Redistributions in binary form must reproduce the above copyright
   22       notice, this list of conditions and the following disclaimer in the
   23       documentation and/or other materials provided with the distribution.
   24 
   25     * Neither the name of the University of Cambridge nor the names of its
   26       contributors may be used to endorse or promote products derived from
   27       this software without specific prior written permission.
   28 
   29 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   30 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   31 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   32 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   33 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   34 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   35 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   36 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   37 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   38 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   39 POSSIBILITY OF SUCH DAMAGE.
   40 -----------------------------------------------------------------------------
   41 */
   42 
   43 /* Have to include stdlib.h in order to ensure that size_t is defined. */
   44 
   45 #include <stdlib.h>
   46 
   47 /* Allow for C++ users */
   48 
   49 #ifdef __cplusplus
   50 extern "C" {
   51 #endif
   52 
   53 /* Options, mostly defined by POSIX, but with some extras. */
   54 
   55 #define REG_ICASE     0x0001   /* Maps to PCRE_CASELESS */
   56 #define REG_NEWLINE   0x0002   /* Maps to PCRE_MULTILINE */
   57 #define REG_NOTBOL    0x0004   /* Maps to PCRE_NOTBOL */
   58 #define REG_NOTEOL    0x0008   /* Maps to PCRE_NOTEOL */
   59 #define REG_DOTALL    0x0010   /* NOT defined by POSIX; maps to PCRE_DOTALL */
   60 #define REG_NOSUB     0x0020   /* Maps to PCRE_NO_AUTO_CAPTURE */
   61 #define REG_UTF8      0x0040   /* NOT defined by POSIX; maps to PCRE_UTF8 */
   62 #define REG_STARTEND  0x0080   /* BSD feature: pass subject string by so,eo */
   63 #define REG_NOTEMPTY  0x0100   /* NOT defined by POSIX; maps to PCRE_NOTEMPTY */
   64 #define REG_UNGREEDY  0x0200   /* NOT defined by POSIX; maps to PCRE_UNGREEDY */
   65 #define REG_UCP       0x0400   /* NOT defined by POSIX; maps to PCRE_UCP */
   66 
   67 /* This is not used by PCRE, but by defining it we make it easier
   68 to slot PCRE into existing programs that make POSIX calls. */
   69 
   70 #define REG_EXTENDED  0
   71 
   72 /* Error values. Not all these are relevant or used by the wrapper. */
   73 
   74 enum {
   75   REG_ASSERT = 1,  /* internal error ? */
   76   REG_BADBR,       /* invalid repeat counts in {} */
   77   REG_BADPAT,      /* pattern error */
   78   REG_BADRPT,      /* ? * + invalid */
   79   REG_EBRACE,      /* unbalanced {} */
   80   REG_EBRACK,      /* unbalanced [] */
   81   REG_ECOLLATE,    /* collation error - not relevant */
   82   REG_ECTYPE,      /* bad class */
   83   REG_EESCAPE,     /* bad escape sequence */
   84   REG_EMPTY,       /* empty expression */
   85   REG_EPAREN,      /* unbalanced () */
   86   REG_ERANGE,      /* bad range inside [] */
   87   REG_ESIZE,       /* expression too big */
   88   REG_ESPACE,      /* failed to get memory */
   89   REG_ESUBREG,     /* bad back reference */
   90   REG_INVARG,      /* bad argument */
   91   REG_NOMATCH      /* match failed */
   92 };
   93 
   94 
   95 /* The structure representing a compiled regular expression. */
   96 
   97 typedef struct {
   98   void *re_pcre;
   99   size_t re_nsub;
  100   size_t re_erroffset;
  101 } regex_t;
  102 
  103 /* The structure in which a captured offset is returned. */
  104 
  105 typedef int regoff_t;
  106 
  107 typedef struct {
  108   regoff_t rm_so;
  109   regoff_t rm_eo;
  110 } regmatch_t;
  111 
  112 /* When an application links to a PCRE DLL in Windows, the symbols that are
  113 imported have to be identified as such. When building PCRE, the appropriate
  114 export settings are needed, and are set in pcreposix.c before including this
  115 file. */
  116 
  117 #if defined(_WIN32) && !defined(PCRE_STATIC) && !defined(PCREPOSIX_EXP_DECL)
  118 #  define PCREPOSIX_EXP_DECL  extern __declspec(dllimport)
  119 #  define PCREPOSIX_EXP_DEFN  __declspec(dllimport)
  120 #endif
  121 
  122 /* By default, we use the standard "extern" declarations. */
  123 
  124 #ifndef PCREPOSIX_EXP_DECL
  125 #  ifdef __cplusplus
  126 #    define PCREPOSIX_EXP_DECL  extern "C"
  127 #    define PCREPOSIX_EXP_DEFN  extern "C"
  128 #  else
  129 #    define PCREPOSIX_EXP_DECL  extern
  130 #    define PCREPOSIX_EXP_DEFN  extern
  131 #  endif
  132 #endif
  133 
  134 /* The functions */
  135 
  136 PCREPOSIX_EXP_DECL int regcomp(regex_t *, const char *, int);
  137 PCREPOSIX_EXP_DECL int regexec(const regex_t *, const char *, size_t,
  138                      regmatch_t *, int);
  139 PCREPOSIX_EXP_DECL size_t regerror(int, const regex_t *, char *, size_t);
  140 PCREPOSIX_EXP_DECL void regfree(regex_t *);
  141 
  142 #ifdef __cplusplus
  143 }   /* extern "C" */
  144 #endif
  145 
  146 #endif /* End of pcreposix.h */