4.3BSD - /usr/src/new/emacs/src/regex.h

   1: /* Definitions for data structures callers pass the regex library.
   2:    Copyright (C) 1985 Richard M. Stallman
   3: 
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  10:    Permission is granted to anyone to distribute verbatim copies
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  27:    Permission is granted to distribute this program (verbatim or
  28:    as modified) in compiled or executable form, provided verbatim
  29:    redistribution is permitted as stated above for source code, and
  30:     A.  it is accompanied by the corresponding machine-readable
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  41:    Permission is granted to distribute this program (verbatim or as modified)
  42:    in executable form as part of a larger system provided that the source
  43:    code for this program, including any modifications used,
  44:    is also distributed or offered as stated in the preceding paragraph.
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  46: In other words, you are welcome to use, share and improve this program.
  47: You are forbidden to forbid anyone else to use, share and improve
  48: what you give them.   Help stamp out software-hoarding!  */
  49: 
  50: 
  51: #ifndef RE_NREGS
  52: #define RE_NREGS 10
  53: #endif
  54: 
  55: /* This data structure is used to represent a compiled pattern. */
  56: 
  57: struct re_pattern_buffer
  58:   {
  59:     char *buffer;   /* Space holding the compiled pattern commands. */
  60:     int allocated;  /* Size of space that  buffer  points to */
  61:     int used;       /* Length of portion of buffer actually occupied */
  62:     char *fastmap;  /* Pointer to fastmap, if any, or zero if none. */
  63:             /* re_search uses the fastmap, if there is one,
  64: 			   to skip quickly over totally implausible characters */
  65:     char *translate;    /* Translate table to apply to all characters before comparing.
  66: 			   Or zero for no translation.
  67: 			   The translation is applied to a pattern when it is compiled
  68: 			   and to data when it is matched. */
  69:     char fastmap_accurate;
  70:             /* Set to zero when a new pattern is stored,
  71: 			   set to one when the fastmap is updated from it. */
  72:     char can_be_null;   /* Set to one by compiling fastmap
  73: 			   if this pattern might match the null string.
  74: 			   It does not necessarily match the null string
  75: 			   in that case, but if this is zero, it cannot.  */
  76:   };
  77: 
  78: /* Structure to store "register" contents data in.
  79: 
  80:    Pass the address of such a structure as an argument to re_match, etc.,
  81:    if you want this information back.
  82: 
  83:    start[i] and end[i] record the string matched by \( ... \) grouping i,
  84:    for i from 1 to RE_NREGS - 1.
  85:    start[0] and end[0] record the entire string matched. */
  86: 
  87: struct re_registers
  88:   {
  89:     int start[RE_NREGS];
  90:     int end[RE_NREGS];
  91:   };
  92: 
  93: char *re_compile_pattern ();

Defined struct's

Defined macros

Usage of this include