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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.io;
/**
* @author bratseth
*/
public class HexDump {
private static final String HEX_CHARS = "0123456789ABCDEF";
public static String toHexString(byte[] buf) {
if (buf == null) {
return null;
}
StringBuilder sb = new StringBuilder();
for (byte b : buf) {
int x = b;
if (x < 0) {
x += 256;
}
sb.append(HEX_CHARS.charAt(x / 16));
sb.append(HEX_CHARS.charAt(x % 16));
}
return sb.toString();
}
}
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