2.11BSD#431 - /usr/src/ucb/pascal/pi/yyoptions.c

   1: /*	@(#)yyoptions.c	2.2	SCCS id keyword	*/
   2: /* Copyright (c) 1979 Regents of the University of California */
   3: #
   4: /*
   5:  * pi - Pascal interpreter code translator
   6:  *
   7:  * Charles Haley, Bill Joy UCB
   8:  * Version 1.1 February 1978
   9:  */
  10: 
  11: #include "whoami"
  12: #include "0.h"
  13: #include "yy.h"
  14: 
  15: /*
  16:  * Options processes the option
  17:  * strings which can appear in
  18:  * comments and returns the next character.
  19:  */
  20: options()
  21: {
  22:     register c, ch;
  23:     register char *optp;
  24:     int ok;
  25: 
  26:     c = readch();
  27:     if (c != '$')
  28:         return (c);
  29:     do {
  30:         ch = c = readch();
  31:         switch (c) {
  32:             case 'b':
  33:                 optp = &opts['b'-'a'];
  34:                 goto optdig;
  35:             case 'x':
  36:                 optp = &opts['x'-'a'];
  37:                 goto optdig;
  38:             optdig:
  39:                 c = readch();
  40:                 if (!digit(c))
  41:                     return (c);
  42:                 *optp = c - '0';
  43:                 c = readch();
  44:                 break;
  45:             default:
  46:                 if (c < 'a' || c > 'z')
  47:                     return (c);
  48:                 optp = &opts[c-'a'];
  49:                 c = readch();
  50:                 if (c == '+') {
  51:                     *optp = 1;
  52:                     c = readch();
  53:                 } else if (c == '-') {
  54:                     *optp = 0;
  55:                     c = readch();
  56:                 } else
  57:                     return (c);
  58:                 break;
  59:             }
  60: #ifdef PI0
  61:         send(ROSET, ch, *optp);
  62: #endif
  63:     } while (c == ',');
  64:     if (opts['u'-'a'])
  65:         setuflg();
  66:     return (c);
  67: }

Defined functions