/* 
 * Filter some odd characters that Scripsit uses.  
 * Usage: scr2txt [-] < infile > outfile.txt 
 *
 * Translations: 
 * 0x00 (null) is dropped (only 1 ever seen)
 * 0x09 (tab) is unchanged, but the next character is dropped
 * 0x10 (start/end emphasis) to "_"
 * 0x89 (tab with high bit set) is changed to "\t" (tab) and
 *      the next character is dropped
 * 0x8d (end of paragraph) to "\r\n", or "\r\n\r\n" if "-" argument given
 * 0xa0 (I don't know how this differs from a plain space) to " " (space)
 */

#include <stdio.h>

int
main(int argc, char **argv)
{
  int c;
  while ((c = getchar()) != EOF) {
    switch (c) {
    case 0x00:
      break;
    case 0x09:
    case 0x89:
      putchar('\t');
      getchar(); /*drop next char*/
      break;
    case 0x10:
      putchar('_');
      break;
    case 0x8d:
      putchar('\r');
      putchar('\n');
      if (argc > 1) {
	putchar('\r');
	putchar('\n');
      }
      break;
    case 0xa0:
      putchar(' ');
      break;
    default:
      putchar(c);
      break;
    }
  }
  putchar('\r');
  putchar('\n');
}