#include <stdio.h>

/**
 * <pre>
 * macwhack.c
 *
 * Macwhack, a MacBinary header remover.
 *
 * Created:	October 26, 1997
 * Author:	Philip C. Tsao (Tp12a@freenet.fsu.edu)
 *
 * Revisions:	1.1a    October 26, 1997
 *			Cleaned up source. Optimized the code a bit.
 *
 *		1.1	May 15, 1997
 *			Fixed null pointer bug.
 *
 *		1.0	January 1, 1997
 *			Initial release.
 * </pre>
 *
 * @author <a href="mailto:Tp12a@freenet.fsu.edu">Philip C. Tsao</a>
 * @version Version 1.1a October 26, 1997
 */

void whack_mac( FILE *, FILE * );
void  prn_info( char * );

/***
 *
 * main
 *
 * Main procedure. Checks command line parameters and calls
 * appropriate functions.
 *
 * Parameters:
 *	int argc	Number of command line parameters (plus 1).
 *
 *	char **argv	Array of strings containing the command line
 *			parameters.
 *
 * Returns:
 *	An int, usually 0 if everything's OK.
 *
 */

int main( int argc, char **argv ) {

	FILE	*ifp, *ofp;

	printf( "\n%s\n%s\n",
		"MACWHACK v1.1a (26-10-97) MacBinary header remover",
		"by Philip C. Tsao (Tp12a@freenet.fsu.edu)" );

	if ( argc != 3 ) {
		prn_info( argv[ 0 ] );
		exit( 1 );
	}

	if( ( ifp = fopen( argv[ 1 ], "rb") ) && ( ofp = fopen( argv[ 2 ], "wb" ) ) ) {

			/* Not the prettiest conditional, but it fixes
			   the null pointer big.
			*/

		whack_mac( ifp, ofp );
		fclose( ifp );
		fclose( ofp );

		printf( "\n%s\n\n",
			"Macwhack probably successful." );

	} else {

		printf( "\n%s\n\n",
			"Bad filename(s)." );
		exit( 1 );
	}

	return 0;
}

/***
 *
 * whack_mac
 *
 * This is the bit that strips the 128-byte header and copies the
 * rest of the file.
 *
 * Parameters:
 *	FILE *ifp	incoming file pointer
 *
 *	FILE *ofp	outgoing file pointer
 *
 * Returns:
 *	Nothing.
 *
 */


void whack_mac( FILE *ifp, FILE *ofp ) {

	int i;

	for( i = 0; i <= 127; i++ ) {
		getc( ifp );
	}

	while( ( i = getc( ifp ) ) != EOF ) {
		putc( i, ofp );
	}
}

/***
 *
 * prn_info
 *
 * Prints (brief) info on correct usage of this program.
 *
 * Parameters:
 *	char *prm_name	AKA char *argv[ 0 ] from main( )
 *			This contains the filename of this
 *			program as reported by the OS.
 *
 * Returns:
 *	Nothing.
 *
 */

void prn_info( char *pgm_name ) {

	printf( "\n%s%s%s\n\n",
		"Usage: ", pgm_name, " infile outfile" );

}