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/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/*
* Easter egg encoder. See ../fedse.c:egg_decode() for the mirror image.
*/
#include <stdio.h>
static unsigned char egg_nibble2char( int nibble );
int
main( int argc, char *argv[] )
{
int c, colcount;
char outc;
if ( argc > 1 ) {
fprintf( stderr, "usage: %s < in > out\n", argv[0] );
return 2;
}
colcount = 0;
while (( c = getchar()) != EOF ) {
if ( 0 == colcount ) {
putchar( '"' );
}
c ^= 122;
outc = egg_nibble2char( (c & 0xF0) >> 4 );
putchar( outc );
++colcount;
outc = egg_nibble2char( c & 0x0F );
putchar( outc );
++colcount;
if ( colcount > 72 ) {
colcount = 0;
putchar( '"' );
putchar( '\n' );
}
}
if ( colcount > 0 ) {
putchar( '"' );
putchar( '\n' );
}
return 0;
}
static unsigned char
egg_nibble2char( int nibble )
{
return ( nibble < 10 ) ? nibble + '0' : ( nibble - 10 ) + 'A';
}
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