1 #include <libl.h> 2 #include <stdio.h> 3 4 extern FILE* yyout; 5 6 int 7 printable(int c) 8 { 9 return 040 < c && c < 0177; 10 } 11 12 void 13 allprint(char c) 14 { 15 16 switch(c) { 17 case '\n': 18 fprintf(yyout,"\\n"); 19 break; 20 case '\t': 21 fprintf(yyout,"\\t"); 22 break; 23 case '\b': 24 fprintf(yyout,"\\b"); 25 break; 26 case ' ': 27 fprintf(yyout,"\\\bb"); 28 break; 29 default: 30 if(!printable(c)) 31 fprintf(yyout,"\\%-3o",c); 32 else 33 c = putc(c,yyout); 34 USED(c); 35 break; 36 } 37 return; 38 } 39