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1.1 root 1: /* Copyright (c) 1979 Regents of the University of California */
2:
3: static char sccsid[] = "@(#)yyoptions.c 1.1 8/27/80";
4:
5: #include "whoami.h"
6: #include "0.h"
7: #include "yy.h"
8:
9: /*
10: * Options processes the option
11: * strings which can appear in
12: * comments and returns the next character.
13: */
14: options()
15: {
16: register c, ch;
17: register char *optp;
18: int ok;
19:
20: c = readch();
21: if (c != '$')
22: return (c);
23: do {
24: ch = c = readch();
25: switch (c) {
26: case 'b':
27: optp = &opt( 'b' );
28: c = readch();
29: if (!digit(c))
30: return (c);
31: *optp = c - '0';
32: c = readch();
33: break;
34: # ifdef PC
35: case 'C':
36: /*
37: * C is a replacement for t, fake it.
38: */
39: c = 't';
40: /* and fall through */
41: case 'g':
42: # endif PC
43: case 'k':
44: case 'l':
45: case 'n':
46: case 'p':
47: case 's':
48: case 't':
49: case 'u':
50: case 'w':
51: case 'z':
52: optp = &opt( c );
53: c = readch();
54: if (c == '+') {
55: *optp = 1;
56: c = readch();
57: } else if (c == '-') {
58: *optp = 0;
59: c = readch();
60: } else {
61: return (c);
62: }
63: break;
64: default:
65: return (c);
66: }
67: #ifdef PI0
68: send(ROSET, ch, *optp);
69: #endif
70: } while (c == ',');
71: if ( opt( 'u' ) )
72: setuflg();
73: return (c);
74: }
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