moomooencode

The only problem with moomooencode is that it's not very efficient. It is, however, much more silly. The output consists of "mOo MOo moO mOO" and so on, using capitalization to represent one bit per letter.

You have been warned.

/***************** START OF MOOMOOENCODE.C ************************/
/*
 *  moomooencode.c by Sean O'Gara (sean@ReZn8.com) 7/1/94.
 *
 *  This program encodes a binary file into "MoO mOo moo MOO MOo ... "
 *  where the data in the file is used to determine the cases of the letters.
 *  The file can be decoded by moomoodecode.
 *
 *  Usage: moomooencode expansion-file-name
 *
 *  The program takes the input file from std. input and sends the encoded
 *  result to std. output.  expansion-file-name is the name the file will
 *  get when it is moomoodecoded.
 */

#include <stdio.h>
#include <string.h>

void moosend(char c);

main(int argc, char *argv[])
{
  char *exname;
  int i, l, c;

  if (argc != 2) {
    fprintf(stderr,"\nUsage: %s expansion-file-name\n\n",argv[0]);
    fprintf(stderr,"This program takes the input file from std. input\n");
    fprintf(stderr,"and sends the encoded result to std. output.\n");
    fprintf(stderr,"expansion-file-name is the name the file will get\n");
    fprintf(stderr,"when it is moomoodecoded.\n");
    return;
  }

  exname = argv[1];

  moosend(0);  /* version/format identifier -- change when extensions added */
  l = strlen(exname);
  for (i=0;i<l;i++) moosend(exname[i]);
  moosend(0);

  while ((c = fgetc(stdin)) != EOF) {
    moosend(c);
  }
  printf("\n");
}

void moosend(char c)
{
  static cpos = 0;
  char *lomoo = "moo";
  char *himoo = "MOO";
  int mpos, i;
  int line_len = 74;

  for (i=0;i<8;i++) {
     mpos = cpos++ % 4;
     if (mpos == 3) {
       fputc(' ',stdout);
       ++cpos;
       mpos = 0;
     }
     fputc((c & 128) ? himoo[mpos] : lomoo[mpos],stdout);
     c = c << 1;
     if (cpos > line_len) {
       printf("\n");
       cpos = 0;
     }
  }
}

Source source: http://www.ncf.carleton.ca/~eh236/mooencod.c
(see also http://www.ncf.carleton.ca/~eh236/moodecod.c)