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Annotation of 43BSD/ucb/lisp/franz/68k/first8.c, revision 1.1.1.1

1.1       root        1: #include <stdio.h>
                      2: #include "config.h"
                      3: char code[256];
                      4: #define FIRST 3
                      5: #define FOLLOW 2
                      6: #define ZERO 6
                      7: #define next() (((c = getc(si))==EOF)? exit(0):0)
                      8: #define copy() putc(c,so)
                      9: #define type() code[(unsigned char)c]
                     10: #if os_unix_ts
                     11: #define index strchr
                     12: #endif
                     13: 
                     14: init() {
                     15:        doit(FIRST,"ABCDEFGHIJKLMNOPQRSTUVWXYZ_");
                     16:        doit(FIRST,"0abcdefghijklmnopqrstuvwxyz_");
                     17:        doit(FOLLOW,"123456789");
                     18: }
                     19: doit(act,list)
                     20: register unsigned char *list;
                     21: {
                     22:        while(*list) {code[*list++]=act;}
                     23: }
                     24: main( )
                     25: {
                     26:        register FILE *si = stdin, *so = stdout;
                     27:        register c, count;
                     28: 
                     29:        init();
                     30: copying:
                     31:        do { next(); copy();} while(type()!=FIRST);
                     32: hexnum:
                     33:        if(c=='0') {
                     34:                next();
                     35:                if(c=='X'||c=='x') {
                     36:                        do { copy(); next();}
                     37:                        while (index("0123456789abcdefABCDEF",c&0x7f)>0);
                     38:                }
                     39:                ungetc(c,si); goto copying;
                     40:        }
                     41: counting:
                     42:        for(count = 0; count < 7; count++) {
                     43:                next();
                     44:                copy();
                     45:                if(!(type()&FOLLOW)) goto copying;
                     46:        }
                     47: squelch:
                     48:        do { next(); } while (type()&FOLLOW);
                     49:        copy();
                     50:        goto copying;
                     51: }

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