/*
* File hex dump written in Java
*
* java Hexdump [file ...]
*/
import java.io.*;
class Hexdump {
static void putXDigit(int d) {
System.out.print(Character.forDigit(d & 0x0f, 16));
}
static void putHex(int c) {
putXDigit(c >>> 4);
putXDigit(c);
}
static void putChar(int n) {
char c = (char)n;
if (c > 0x7f || Character.isISOControl(c))
System.out.print(".");
else
System.out.print(c);
}
static void doDump(InputStream in) {
final int BYTES = 16;
byte[] buff = new byte[BYTES];
int n;
try {
while ((n = in.read(buff)) > 0) {
for (int i = 0; i < BYTES; ++i) {
if (i < n)
putHex(buff[i] & 0xff);
else
System.out.print(" ");
System.out.print(" ");
if ((i + 1) % (BYTES / 2) == 0)
System.out.print(" ");
}
System.out.print("|");
for (int i = 0; i < n; ++i)
putChar(buff[i] & 0xff);
System.out.println("|");
}
} catch (IOException e) {
System.err.println("IO error: " + e.toString());
System.exit(1);
}
}
static InputStream nextFile(String fname) {
FileInputStream ifs = null;
try {
ifs = new FileInputStream(fname);
} catch (FileNotFoundException e) {
System.err.println("Cannot open " + fname);
}
return (InputStream)ifs;
}
public static void main(String args[]) {
if (args.length == 0)
doDump(System.in);
for (int i = 0; i < args.length; ++i) {
InputStream is = nextFile(args[i]);
doDump(is);
try { is.close(); } catch (IOException e) { };
}
}
}
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