sys/src/liblex/allprint.c

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