/[pcre]/code/tags/pcre-4.5/internal.h
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revision 29 by nigel, Sat Feb 24 21:38:53 2007 UTC revision 43 by nigel, Sat Feb 24 21:39:21 2007 UTC
# Line 3  Line 3 
3  *************************************************/  *************************************************/
4    
5    
 #define PCRE_VERSION       "2.03 12-Feb-1999"  
   
   
6  /* This is a library of functions to support regular expressions whose syntax  /* This 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. See  and semantics are as close as possible to those of the Perl 5 language. See
8  the file Tech.Notes for some information on the internals.  the file Tech.Notes for some information on the internals.
9    
10  Written by: Philip Hazel <ph10@cam.ac.uk>  Written by: Philip Hazel <ph10@cam.ac.uk>
11    
12             Copyright (c) 1997-1999 University of Cambridge             Copyright (c) 1997-2000 University of Cambridge
13    
14  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
15  Permission is granted to anyone to use this software for any purpose on any  Permission is granted to anyone to use this software for any purpose on any
# Line 38  restrictions: Line 35  restrictions:
35  /* This header contains definitions that are shared between the different  /* This header contains definitions that are shared between the different
36  modules, but which are not relevant to the outside. */  modules, but which are not relevant to the outside. */
37    
38    /* Get the definitions provided by running "configure" */
39    
40    #include "config.h"
41    
42  /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),  /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
43  define a macro for memmove() if USE_BCOPY is defined. */  define a macro for memmove() if HAVE_MEMMOVE is false. */
44    
45  #ifdef USE_BCOPY  #if ! HAVE_MEMMOVE
46  #undef  memmove        /* some systems may have a macro */  #undef  memmove        /* some systems may have a macro */
47  #define memmove(a, b, c) bcopy(b, a, c)  #define memmove(a, b, c) bcopy(b, a, c)
48  #endif  #endif
# Line 67  Standard C system should have one. */ Line 68  Standard C system should have one. */
68    
69  #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)  #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
70    
71  /* Private options flags start at the most significant end of the two bytes.  /* Private options flags start at the most significant end of the four bytes,
72  The public options defined in pcre.h start at the least significant end. Make  but skip the top bit so we can use ints for convenience without getting tangled
73  sure they don't overlap! */  with negative values. The public options defined in pcre.h start at the least
74    significant end. Make sure they don't overlap, though now that we have expanded
75  #define PCRE_FIRSTSET           0x8000  /* first_char is set */  to four bytes there is plenty of space. */
76  #define PCRE_STARTLINE          0x4000  /* start after \n for multiline */  
77  #define PCRE_INGROUP            0x2000  /* compiling inside a group */  #define PCRE_FIRSTSET      0x40000000  /* first_char is set */
78    #define PCRE_REQCHSET      0x20000000  /* req_char is set */
79    #define PCRE_STARTLINE     0x10000000  /* start after \n for multiline */
80    #define PCRE_INGROUP       0x08000000  /* compiling inside a group */
81    #define PCRE_ICHANGED      0x04000000  /* i option changes within regex */
82    
83  /* Options for the "extra" block produced by pcre_study(). */  /* Options for the "extra" block produced by pcre_study(). */
84    
# Line 86  time, run time or study time, respective Line 91  time, run time or study time, respective
91    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
92     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY)     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY)
93    
94  #define PUBLIC_EXEC_OPTIONS (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL)  #define PUBLIC_EXEC_OPTIONS \
95      (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY)
96    
97  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */
98    
99  /* Magic number to provide a small check against being handed junk. */  /* Magic number to provide a small check against being handed junk. */
100    
101  #define MAGIC_NUMBER  0x50435245   /* 'PCRE' */  #define MAGIC_NUMBER  0x50435245UL   /* 'PCRE' */
102    
103  /* Miscellaneous definitions */  /* Miscellaneous definitions */
104    
# Line 182  enum { Line 188  enum {
188    
189    OP_CLASS,          /* Match a character class */    OP_CLASS,          /* Match a character class */
190    OP_REF,            /* Match a back reference */    OP_REF,            /* Match a back reference */
191      OP_RECURSE,        /* Match this pattern recursively */
192    
193    OP_ALT,            /* Start of alternation */    OP_ALT,            /* Start of alternation */
194    OP_KET,            /* End of group that doesn't have an unbounded repeat */    OP_KET,            /* End of group that doesn't have an unbounded repeat */
# Line 248  just to accommodate the POSIX wrapper. * Line 255  just to accommodate the POSIX wrapper. *
255  #define ERR26 "malformed number after (?("  #define ERR26 "malformed number after (?("
256  #define ERR27 "conditional group contains more than two branches"  #define ERR27 "conditional group contains more than two branches"
257  #define ERR28 "assertion expected after (?("  #define ERR28 "assertion expected after (?("
258    #define ERR29 "(?p must be followed by )"
259    #define ERR30 "unknown POSIX class name"
260    #define ERR31 "POSIX collating elements are not supported"
261    
262  /* All character handling must be done as unsigned characters. Otherwise there  /* All character handling must be done as unsigned characters. Otherwise there
263  are problems with top-bit-set characters and functions such as isspace().  are problems with top-bit-set characters and functions such as isspace().
# Line 262  typedef unsigned char uschar; Line 272  typedef unsigned char uschar;
272  runs on as long as necessary after the end. */  runs on as long as necessary after the end. */
273    
274  typedef struct real_pcre {  typedef struct real_pcre {
275    unsigned int  magic_number;    unsigned long int magic_number;
276      size_t size;
277    const unsigned char *tables;    const unsigned char *tables;
278    unsigned short int options;    unsigned long int options;
279    unsigned char top_bracket;    uschar top_bracket;
280    unsigned char top_backref;    uschar top_backref;
281    unsigned char first_char;    uschar first_char;
282    unsigned char code[1];    uschar req_char;
283      uschar code[1];
284  } real_pcre;  } real_pcre;
285    
286  /* The real format of the extra block returned by pcre_study(). */  /* The real format of the extra block returned by pcre_study(). */
287    
288  typedef struct real_pcre_extra {  typedef struct real_pcre_extra {
289    unsigned char options;    uschar options;
290    unsigned char start_bits[32];    uschar start_bits[32];
291  } real_pcre_extra;  } real_pcre_extra;
292    
293    
# Line 284  doing the compiling, so that they are th Line 296  doing the compiling, so that they are th
296    
297  typedef struct compile_data {  typedef struct compile_data {
298    const uschar *lcc;            /* Points to lower casing table */    const uschar *lcc;            /* Points to lower casing table */
299    const uschar *fcc;            /* Points to case-flippint table */    const uschar *fcc;            /* Points to case-flipping table */
300    const uschar *cbits;          /* Points to character type table */    const uschar *cbits;          /* Points to character type table */
301    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
302  } compile_data;  } compile_data;
# Line 303  typedef struct match_data { Line 315  typedef struct match_data {
315    BOOL   notbol;                /* NOTBOL flag */    BOOL   notbol;                /* NOTBOL flag */
316    BOOL   noteol;                /* NOTEOL flag */    BOOL   noteol;                /* NOTEOL flag */
317    BOOL   endonly;               /* Dollar not before final \n */    BOOL   endonly;               /* Dollar not before final \n */
318      BOOL   notempty;              /* Empty string match not wanted */
319      const uschar *start_pattern;  /* For use when recursing */
320    const uschar *start_subject;  /* Start of the subject string */    const uschar *start_subject;  /* Start of the subject string */
321    const uschar *end_subject;    /* End of the subject string */    const uschar *end_subject;    /* End of the subject string */
322      const uschar *start_match;    /* Start of this match attempt */
323    const uschar *end_match_ptr;  /* Subject position at end match */    const uschar *end_match_ptr;  /* Subject position at end match */
324    int     end_offset_top;       /* Highwater mark at end of match */    int    end_offset_top;        /* Highwater mark at end of match */
325  } match_data;  } match_data;
326    
327  /* Bit definitions for entries in the pcre_ctypes table. */  /* Bit definitions for entries in the pcre_ctypes table. */
# Line 319  typedef struct match_data { Line 334  typedef struct match_data {
334  #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */  #define ctype_meta    0x80   /* regexp meta char or zero (end pattern) */
335    
336  /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set  /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
337  of bits for a class map. */  of bits for a class map. Some classes are built by combining these tables. */
338    
339  #define cbit_digit    0      /* for \d */  #define cbit_space     0      /* [:space:] or \s */
340  #define cbit_word    32      /* for \w */  #define cbit_xdigit   32      /* [:xdigit:] */
341  #define cbit_space   64      /* for \s */  #define cbit_digit    64      /* [:digit:] or \d */
342  #define cbit_length  96      /* Length of the cbits table */  #define cbit_upper    96      /* [:upper:] */
343    #define cbit_lower   128      /* [:lower:] */
344    #define cbit_word    160      /* [:word:] or \w */
345    #define cbit_graph   192      /* [:graph:] */
346    #define cbit_print   224      /* [:print:] */
347    #define cbit_punct   256      /* [:punct:] */
348    #define cbit_cntrl   288      /* [:cntrl:] */
349    #define cbit_length  320      /* Length of the cbits table */
350    
351  /* Offsets of the various tables from the base tables pointer, and  /* Offsets of the various tables from the base tables pointer, and
352  total length. */  total length. */
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