#include <u.h>
#include <libc.h>
#include "tag.h"

void
usage(void)
{
	fprint(2, "usage: %s file\n", argv0);
	exits("usage");
}

void
main(int argc, char **argv)
{
	int fd;
	vlong offset;
	uchar buf[8], *p;
	u32int length;

	ARGBEGIN {
	default:
		usage();
	} ARGEND

	if(argc != 1)
		usage();

	if((fd = open(argv[0], OREAD)) < 0)
		sysfatal("open %s: %r", argv[0]);

	offset = 0;
	while(pread(fd, buf, sizeof buf, offset) == sizeof buf) {
		p = buf;
		length = g32(&p);
		print("%.4s	%d\n", (char *)p, length);
		offset += length;
	}

	exits(nil);
}