| 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 | } |