ex_re.h

Variables

braelist          X
braslist          X
re                X
rhsbuf            X
scanre            X
subre             X

Macros

CBRA              X
CBRC              X
CCHR              X
CCL               X
CDOL              X
CDOT              X
CEOFC             X
CKET              X
CLET              X
NCCL              X
STAR              X
circfl            X
expbuf            X
nbra              X
resre             X
savere            X

struct's

regexp            X

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)ex_re.h	7.3 (Berkeley) 5/31/85
   7:  */
   8: 
   9: /*
  10:  * Regular expression definitions.
  11:  * The regular expressions in ex are similar to those in ed,
  12:  * with the addition of the word boundaries from Toronto ed
  13:  * and allowing character classes to have [a-b] as in the shell.
  14:  * The numbers for the nodes below are spaced further apart then
  15:  * necessary because I at one time partially put in + and | (one or
  16:  * more and alternation.)
  17:  */
  18: struct  regexp {
  19:     char    Expbuf[ESIZE + 2];
  20:     bool    Circfl;
  21:     short   Nbra;
  22: };
  23: 
  24: /*
  25:  * There are three regular expressions here, the previous (in re),
  26:  * the previous substitute (in subre) and the previous scanning (in scanre).
  27:  * It would be possible to get rid of "re" by making it a stack parameter
  28:  * to the appropriate routines.
  29:  */
  30: var struct  regexp re;      /* Last re */
  31: var struct  regexp scanre;      /* Last scanning re */
  32: var struct  regexp subre;       /* Last substitute re */
  33: 
  34: /*
  35:  * Defining circfl and expbuf like this saves us from having to change
  36:  * old code in the ex_re.c stuff.
  37:  */
  38: #define expbuf  re.Expbuf
  39: #define circfl  re.Circfl
  40: #define nbra    re.Nbra
  41: 
  42: /*
  43:  * Since the phototypesetter v7-epsilon
  44:  * C compiler doesn't have structure assignment...
  45:  */
  46: #define savere(a)   copy(&a, &re, sizeof (struct regexp))
  47: #define resre(a)    copy(&re, &a, sizeof (struct regexp))
  48: 
  49: /*
  50:  * Definitions for substitute
  51:  */
  52: var char    *braslist[NBRA];    /* Starts of \(\)'ed text in lhs */
  53: var char    *braelist[NBRA];    /* Ends... */
  54: var char    rhsbuf[RHSSIZE];    /* Rhs of last substitute */
  55: 
  56: /*
  57:  * Definitions of codes for the compiled re's.
  58:  * The re algorithm is described in a paper
  59:  * by K. Thompson in the CACM about 10 years ago
  60:  * and is the same as in ed.
  61:  */
  62: #define STAR    1
  63: 
  64: #define CBRA    1
  65: #define CDOT    4
  66: #define CCL 8
  67: #define NCCL    12
  68: #define CDOL    16
  69: #define CEOFC   17
  70: #define CKET    18
  71: #define CCHR    20
  72: #define CBRC    24
  73: #define CLET    25