/************************************************************************ 
   バックスラッシュ処理プログラム
					copyright 2004, TKEN
*************************************************************************/
#include <stdio.h> 

int
main( int argc, char **argv )
{
	int	i;
	int	j;
	FILE	*fp;

	static unsigned char tmpbuf[4096];
	static unsigned char tmpbuf2[4096*2];

	if ( argc != 2 ) {
		fprintf( stderr, "Usage:%s filename\n", argv[0] );
		exit(1);
	}

	fp = fopen( argv[1], "r" );

	if ( !fp ) {
		fprintf( stderr, "Cannot open %s\n", argv[1] );
		exit(1);
	}

	while( fgets( tmpbuf, 4096, fp ) != NULL ) {

		i = 0;
		j = 0;

		while( tmpbuf[i] != '\0' ) {

			if ( ( i > 0 ) 
			  && ( tmpbuf[i-1] > 127 ) 
			  && ( tmpbuf[i] == '\\' ) ) {

				tmpbuf2[j] = '\\';
				j++;
				tmpbuf2[j] = '\\';
				j++;
				i++;
			}
			else {
				tmpbuf2[j] = tmpbuf[i];
				j++;
				i++;
			}
		}

		tmpbuf2[j] = '\0';
		printf( "%s", tmpbuf2 );
	}

	fclose( fp );

	return 0;
}