#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>

void bitdump(int fd)
{
    unsigned char buff[8], out[72];
    int n, i;

    while((n = read(fd, buff, 8)) == 8)
    {
	unsigned char* p = out;

	for(i = 0; i < 8; i++)
	{
	    unsigned char c, mask;
	    c = buff[i];
	    for(mask = 0x80; mask; mask >>= 1)
		*p++ = '0' + ((c & mask) != 0);
	    *p++ = ' ';
	}
	p[-1] = '\n';
	write(1, out, 72);
    }

    if(n > 0)
    {
	unsigned char* p = out;

	for(i = 0; i < n; i++)
	{
	    unsigned char c, mask;
	    c = buff[i];
	    for(mask = 0x80; mask; mask >>= 1)
		*p++ = '0' + ((c & mask) != 0);
	    *p++ = ' ';
	}
	p[-1] = '\n';
	write(1, out, 9 * n);
    }
}

int main(int argc, char** argv)
{
    if(argc <= 1)
	bitdump(0);
    else
    {
	int i, fd;
	for(i = 1; i < argc; i++)
	{
	    if((fd = open(argv[i], 0)) < 0)
	    {
		perror(argv[i]);
		continue;
	    }
	    bitdump(fd);
	    close(fd);
	}
    }
    return 0;
}