char* appends( char* str, char* text ) {
	// not allocated!
	if ( !str ) { 
		str = malloc( strlen( text ) + 1 );
		strcpy( str, text );
		return str;
	}
	
	
	int size = ( ( strlen( str ) + strlen( text ) ) ) + 2;
	str = realloc( str, size );
	strcat( str, text );
	return str;
}

char* HTMLEntities( char* input ) {
	int i;
	int length = strlen( input );
	char* copy = NULL;
	for( i = 0; i < length; i++ ){
		switch( input[i] ) {
			case '<':   copy = appends( copy, "&lt;" ); break;
			case '>':   copy = appends( copy, "&gt;" ); break;
			case '&':   copy = appends( copy, "&amp;" ); break;
			case '"':   copy = appends( copy, "&quot;" ); break;
			case '\'':  copy = appends( copy, "&apos;" ); break;
			default:    copy = appendc( copy, input[i] ); break;
		}
	}
	return copy;
}