/**
* Reads in a sequence of bytes from standard input and writes them to standard output using
* hexademical notation, k hex digits per line, where k is given as a command-line integer
* (defaults to 16 if no integer is specified); also writes the number of bits.
*/
public static void main(String[] args) {
int bytesPerLine = 16;
if (args.length == 1) {
bytesPerLine = Integer.parseInt(args[0]);
}
int i;
for (i = 0; !BinaryStdIn.isEmpty(); i++) {
if (bytesPerLine == 0) {
BinaryStdIn.readChar();
continue;
}
if (i == 0) StdOut.printf("");
else if (i % bytesPerLine == 0) StdOut.printf("\n", i);
else StdOut.print(" ");
char c = BinaryStdIn.readChar();
StdOut.printf("%02x", c & 0xff);
}
if (bytesPerLine != 0) StdOut.println();
StdOut.println((i * 8) + " bits");
}
