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(int c)
  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 }