src/src/pcre/pcre.h

   1 /* $Cambridge: exim/src/src/pcre/pcre.h,v 1.7 2007/11/12 13:02:19 nm4 Exp $ */
   2
   3 /*************************************************
   4 *       Perl-Compatible Regular Expressions      *
   5 *************************************************/
   6
   7 /* This is the public header file for the PCRE library, to be #included by
   8 applications that call the PCRE functions.
   9
  10            Copyright (c) 1997-2007 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 #ifndef _PCRE_H
  42 #define _PCRE_H
  43
  44 /* The current PCRE version information. */
  45
  46 #define PCRE_MAJOR          7
  47 #define PCRE_MINOR          2
  48 #define PCRE_PRERELEASE
  49 #define PCRE_DATE           2007-06-19
  50
  51 /* When an application links to a PCRE DLL in Windows, the symbols that are
  52 imported have to be identified as such. When building PCRE, the appropriate
  53 export setting is defined in pcre_internal.h, which includes this file. So we
  54 don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL. */
  55
  56 #if defined(_WIN32) && !defined(PCRE_STATIC)
  57 #  ifndef PCRE_EXP_DECL
  58 #    define PCRE_EXP_DECL  extern __declspec(dllimport)
  59 #  endif
  60 #  ifdef __cplusplus
  61 #    ifndef PCRECPP_EXP_DECL
  62 #      define PCRECPP_EXP_DECL  extern __declspec(dllimport)
  63 #    endif
  64 #    ifndef PCRECPP_EXP_DEFN
  65 #      define PCRECPP_EXP_DEFN  __declspec(dllimport)
  66 #    endif
  67 #  endif
  68 #endif
  69
  70 /* By default, we use the standard "extern" declarations. */
  71
  72 #ifndef PCRE_EXP_DECL
  73 #  ifdef __cplusplus
  74 #    define PCRE_EXP_DECL  extern "C"
  75 #  else
  76 #    define PCRE_EXP_DECL  extern
  77 #  endif
  78 #endif
  79
  80 #ifdef __cplusplus
  81 #  ifndef PCRECPP_EXP_DECL
  82 #    define PCRECPP_EXP_DECL  extern
  83 #  endif
  84 #  ifndef PCRECPP_EXP_DEFN
  85 #    define PCRECPP_EXP_DEFN
  86 #  endif
  87 #endif
  88
  89 /* Have to include stdlib.h in order to ensure that size_t is defined;
  90 it is needed here for malloc. */
  91
  92 #include <stdlib.h>
  93
  94 /* Allow for C++ users */
  95
  96 #ifdef __cplusplus
  97 extern "C" {
  98 #endif
  99
 100 /* Options */
 101
 102 #define PCRE_CASELESS           0x00000001
 103 #define PCRE_MULTILINE          0x00000002
 104 #define PCRE_DOTALL             0x00000004
 105 #define PCRE_EXTENDED           0x00000008
 106 #define PCRE_ANCHORED           0x00000010
 107 #define PCRE_DOLLAR_ENDONLY     0x00000020
 108 #define PCRE_EXTRA              0x00000040
 109 #define PCRE_NOTBOL             0x00000080
 110 #define PCRE_NOTEOL             0x00000100
 111 #define PCRE_UNGREEDY           0x00000200
 112 #define PCRE_NOTEMPTY           0x00000400
 113 #define PCRE_UTF8               0x00000800
 114 #define PCRE_NO_AUTO_CAPTURE    0x00001000
 115 #define PCRE_NO_UTF8_CHECK      0x00002000
 116 #define PCRE_AUTO_CALLOUT       0x00004000
 117 #define PCRE_PARTIAL            0x00008000
 118 #define PCRE_DFA_SHORTEST       0x00010000
 119 #define PCRE_DFA_RESTART        0x00020000
 120 #define PCRE_FIRSTLINE          0x00040000
 121 #define PCRE_DUPNAMES           0x00080000
 122 #define PCRE_NEWLINE_CR         0x00100000
 123 #define PCRE_NEWLINE_LF         0x00200000
 124 #define PCRE_NEWLINE_CRLF       0x00300000
 125 #define PCRE_NEWLINE_ANY        0x00400000
 126 #define PCRE_NEWLINE_ANYCRLF    0x00500000
 127 #define PCRE_BSR_ANYCRLF        0x00800000
 128 #define PCRE_BSR_UNICODE        0x01000000
 129
 130 /* Exec-time and get/set-time error codes */
 131
 132 #define PCRE_ERROR_NOMATCH         (-1)
 133 #define PCRE_ERROR_NULL            (-2)
 134 #define PCRE_ERROR_BADOPTION       (-3)
 135 #define PCRE_ERROR_BADMAGIC        (-4)
 136 #define PCRE_ERROR_UNKNOWN_OPCODE  (-5)
 137 #define PCRE_ERROR_UNKNOWN_NODE    (-5)  /* For backward compatibility */
 138 #define PCRE_ERROR_NOMEMORY        (-6)
 139 #define PCRE_ERROR_NOSUBSTRING     (-7)
 140 #define PCRE_ERROR_MATCHLIMIT      (-8)
 141 #define PCRE_ERROR_CALLOUT         (-9)  /* Never used by PCRE itself */
 142 #define PCRE_ERROR_BADUTF8        (-10)
 143 #define PCRE_ERROR_BADUTF8_OFFSET (-11)
 144 #define PCRE_ERROR_PARTIAL        (-12)
 145 #define PCRE_ERROR_BADPARTIAL     (-13)
 146 #define PCRE_ERROR_INTERNAL       (-14)
 147 #define PCRE_ERROR_BADCOUNT       (-15)
 148 #define PCRE_ERROR_DFA_UITEM      (-16)
 149 #define PCRE_ERROR_DFA_UCOND      (-17)
 150 #define PCRE_ERROR_DFA_UMLIMIT    (-18)
 151 #define PCRE_ERROR_DFA_WSSIZE     (-19)
 152 #define PCRE_ERROR_DFA_RECURSE    (-20)
 153 #define PCRE_ERROR_RECURSIONLIMIT (-21)
 154 #define PCRE_ERROR_NULLWSLIMIT    (-22)  /* No longer actually used */
 155 #define PCRE_ERROR_BADNEWLINE     (-23)
 156
 157 /* Request types for pcre_fullinfo() */
 158
 159 #define PCRE_INFO_OPTIONS            0
 160 #define PCRE_INFO_SIZE               1
 161 #define PCRE_INFO_CAPTURECOUNT       2
 162 #define PCRE_INFO_BACKREFMAX         3
 163 #define PCRE_INFO_FIRSTBYTE          4
 164 #define PCRE_INFO_FIRSTCHAR          4  /* For backwards compatibility */
 165 #define PCRE_INFO_FIRSTTABLE         5
 166 #define PCRE_INFO_LASTLITERAL        6
 167 #define PCRE_INFO_NAMEENTRYSIZE      7
 168 #define PCRE_INFO_NAMECOUNT          8
 169 #define PCRE_INFO_NAMETABLE          9
 170 #define PCRE_INFO_STUDYSIZE         10
 171 #define PCRE_INFO_DEFAULT_TABLES    11
 172 #define PCRE_INFO_OKPARTIAL         12
 173 #define PCRE_INFO_JCHANGED          13
 174 #define PCRE_INFO_HASCRORLF         14
 175
 176 /* Request types for pcre_config(). Do not re-arrange, in order to remain
 177 compatible. */
 178
 179 #define PCRE_CONFIG_UTF8                    0
 180 #define PCRE_CONFIG_NEWLINE                 1
 181 #define PCRE_CONFIG_LINK_SIZE               2
 182 #define PCRE_CONFIG_POSIX_MALLOC_THRESHOLD  3
 183 #define PCRE_CONFIG_MATCH_LIMIT             4
 184 #define PCRE_CONFIG_STACKRECURSE            5
 185 #define PCRE_CONFIG_UNICODE_PROPERTIES      6
 186 #define PCRE_CONFIG_MATCH_LIMIT_RECURSION   7
 187 #define PCRE_CONFIG_BSR                     8
 188
 189 /* Bit flags for the pcre_extra structure. Do not re-arrange or redefine
 190 these bits, just add new ones on the end, in order to remain compatible. */
 191
 192 #define PCRE_EXTRA_STUDY_DATA             0x0001
 193 #define PCRE_EXTRA_MATCH_LIMIT            0x0002
 194 #define PCRE_EXTRA_CALLOUT_DATA           0x0004
 195 #define PCRE_EXTRA_TABLES                 0x0008
 196 #define PCRE_EXTRA_MATCH_LIMIT_RECURSION  0x0010
 197
 198 /* Types */
 199
 200 struct real_pcre;                 /* declaration; the definition is private  */
 201 typedef struct real_pcre pcre;
 202
 203 /* When PCRE is compiled as a C++ library, the subject pointer type can be
 204 replaced with a custom type. For conventional use, the public interface is a
 205 const char *. */
 206
 207 #ifndef PCRE_SPTR
 208 #define PCRE_SPTR const char *
 209 #endif
 210
 211 /* The structure for passing additional data to pcre_exec(). This is defined in
 212 such as way as to be extensible. Always add new fields at the end, in order to
 213 remain compatible. */
 214
 215 typedef struct pcre_extra {
 216   unsigned long int flags;        /* Bits for which fields are set */
 217   void *study_data;               /* Opaque data from pcre_study() */
 218   unsigned long int match_limit;  /* Maximum number of calls to match() */
 219   void *callout_data;             /* Data passed back in callouts */
 220   const unsigned char *tables;    /* Pointer to character tables */
 221   unsigned long int match_limit_recursion; /* Max recursive calls to match() */
 222 } pcre_extra;
 223
 224 /* The structure for passing out data via the pcre_callout_function. We use a
 225 structure so that new fields can be added on the end in future versions,
 226 without changing the API of the function, thereby allowing old clients to work
 227 without modification. */
 228
 229 typedef struct pcre_callout_block {
 230   int          version;           /* Identifies version of block */
 231   /* ------------------------ Version 0 ------------------------------- */
 232   int          callout_number;    /* Number compiled into pattern */
 233   int         *offset_vector;     /* The offset vector */
 234   PCRE_SPTR    subject;           /* The subject being matched */
 235   int          subject_length;    /* The length of the subject */
 236   int          start_match;       /* Offset to start of this match attempt */
 237   int          current_position;  /* Where we currently are in the subject */
 238   int          capture_top;       /* Max current capture */
 239   int          capture_last;      /* Most recently closed capture */
 240   void        *callout_data;      /* Data passed in with the call */
 241   /* ------------------- Added for Version 1 -------------------------- */
 242   int          pattern_position;  /* Offset to next item in the pattern */
 243   int          next_item_length;  /* Length of next item in the pattern */
 244   /* ------------------------------------------------------------------ */
 245 } pcre_callout_block;
 246
 247 /* Indirection for store get and free functions. These can be set to
 248 alternative malloc/free functions if required. Special ones are used in the
 249 non-recursive case for "frames". There is also an optional callout function
 250 that is triggered by the (?) regex item. For Virtual Pascal, these definitions
 251 have to take another form. */
 252
 253 #ifndef VPCOMPAT
 254 PCRE_EXP_DECL void *(*pcre_malloc)(size_t);
 255 PCRE_EXP_DECL void  (*pcre_free)(void *);
 256 PCRE_EXP_DECL void *(*pcre_stack_malloc)(size_t);
 257 PCRE_EXP_DECL void  (*pcre_stack_free)(void *);
 258 PCRE_EXP_DECL int   (*pcre_callout)(pcre_callout_block *);
 259 #else   /* VPCOMPAT */
 260 PCRE_EXP_DECL void *pcre_malloc(size_t);
 261 PCRE_EXP_DECL void  pcre_free(void *);
 262 PCRE_EXP_DECL void *pcre_stack_malloc(size_t);
 263 PCRE_EXP_DECL void  pcre_stack_free(void *);
 264 PCRE_EXP_DECL int   pcre_callout(pcre_callout_block *);
 265 #endif  /* VPCOMPAT */
 266
 267 /* Exported PCRE functions */
 268
 269 PCRE_EXP_DECL pcre *pcre_compile(const char *, int, const char **, int *,
 270                   const unsigned char *);
 271 PCRE_EXP_DECL pcre *pcre_compile2(const char *, int, int *, const char **,
 272                   int *, const unsigned char *);
 273 PCRE_EXP_DECL int  pcre_config(int, void *);
 274 PCRE_EXP_DECL int  pcre_copy_named_substring(const pcre *, const char *,
 275                   int *, int, const char *, char *, int);
 276 PCRE_EXP_DECL int  pcre_copy_substring(const char *, int *, int, int, char *,
 277                   int);
 278 PCRE_EXP_DECL int  pcre_dfa_exec(const pcre *, const pcre_extra *,
 279                   const char *, int, int, int, int *, int , int *, int);
 280 PCRE_EXP_DECL int  pcre_exec(const pcre *, const pcre_extra *, PCRE_SPTR,
 281                    int, int, int, int *, int);
 282 PCRE_EXP_DECL void pcre_free_substring(const char *);
 283 PCRE_EXP_DECL void pcre_free_substring_list(const char **);
 284 PCRE_EXP_DECL int  pcre_fullinfo(const pcre *, const pcre_extra *, int,
 285                   void *);
 286 PCRE_EXP_DECL int  pcre_get_named_substring(const pcre *, const char *,
 287                   int *, int, const char *, const char **);
 288 PCRE_EXP_DECL int  pcre_get_stringnumber(const pcre *, const char *);
 289 PCRE_EXP_DECL int  pcre_get_stringtable_entries(const pcre *, const char *,
 290                   char **, char **);
 291 PCRE_EXP_DECL int  pcre_get_substring(const char *, int *, int, int,
 292                   const char **);
 293 PCRE_EXP_DECL int  pcre_get_substring_list(const char *, int *, int,
 294                   const char ***);
 295 PCRE_EXP_DECL int  pcre_info(const pcre *, int *, int *);
 296 PCRE_EXP_DECL const unsigned char *pcre_maketables(void);
 297 PCRE_EXP_DECL int  pcre_refcount(pcre *, int);
 298 PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
 299 PCRE_EXP_DECL const char *pcre_version(void);
 300
 301 #ifdef __cplusplus
 302 }  /* extern "C" */
 303 #endif
 304
 305 #endif /* End of pcre.h */