projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 58ac8f52 CH |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
| 2 | # | |
| 3 | /* | |
| 4 | * pi - Pascal interpreter code translator | |
| 5 | * | |
| 6 | * Charles Haley, Bill Joy UCB | |
| 7 | * Version 1.1 February 1978 | |
| 8 | */ | |
| 9 | ||
| 10 | #include "whoami" | |
| 11 | #include "0.h" | |
| 12 | #include "yy.h" | |
| 13 | ||
| 14 | /* | |
| 15 | * Options processes the option | |
| 16 | * strings which can appear in | |
| 17 | * comments and returns the next character. | |
| 18 | */ | |
| 19 | options() | |
| 20 | { | |
| 21 | register c, ch; | |
| 22 | register char *optp; | |
| 23 | int ok; | |
| 24 | ||
| 25 | c = readch(); | |
| 26 | if (c != '$') | |
| 27 | return (c); | |
| 28 | do { | |
| 29 | ch = c = readch(); | |
| 30 | switch (c) { | |
| 31 | case 'b': | |
| 32 | optp = &opts['b'-'a']; | |
| 33 | goto optdig; | |
| 34 | case 'x': | |
| 35 | optp = &opts['x'-'a']; | |
| 36 | goto optdig; | |
| 37 | optdig: | |
| 38 | c = readch(); | |
| 39 | if (!digit(c)) | |
| 40 | return (c); | |
| 41 | *optp = c - '0'; | |
| 42 | c = readch(); | |
| 43 | break; | |
| 44 | default: | |
| 45 | if (c < 'a' || c > 'z') | |
| 46 | return (c); | |
| 47 | optp = &opts[c-'a']; | |
| 48 | c = readch(); | |
| 49 | if (c == '+') { | |
| 50 | *optp = 1; | |
| 51 | c = readch(); | |
| 52 | } else if (c == '-') { | |
| 53 | *optp = 0; | |
| 54 | c = readch(); | |
| 55 | } else | |
| 56 | return (c); | |
| 57 | break; | |
| 58 | } | |
| 59 | #ifdef PI0 | |
| 60 | send(ROSET, ch, *optp); | |
| 61 | #endif | |
| 62 | } while (c == ','); | |
| 63 | if (opts['u'-'a']) | |
| 64 | setuflg(); | |
| 65 | return (c); | |
| 66 | } |