/*
*******************************************************************************
* BTChip Bitcoin Hardware Wallet Java API
* (c) 2014 BTChip - 1BTChip7VfTnrPra5jqci7ejnMguuHogTn
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
********************************************************************************
*/
package com.btchip.utils;
import java.io.ByteArrayOutputStream;
public class Dump {
public static String dump(byte[] buffer, int offset, int length) {
String result = "";
for (int i=0; i<length; i++) {
String temp = Integer.toHexString((buffer[offset + i]) & 0xff);
if (temp.length() < 2) {
temp = "0" + temp;
}
result += temp;
}
return result;
}
public static String dump(byte[] buffer) {
return dump(buffer, 0, buffer.length);
}
public static byte[] hexToBin(String src) {
ByteArrayOutputStream result = new ByteArrayOutputStream();
int i = 0;
while (i < src.length()) {
char x = src.charAt(i);
if (!((x >= '0' && x <= '9') || (x >= 'A' && x <= 'F') || (x >= 'a' && x <= 'f'))) {
i++;
continue;
}
try {
result.write(Integer.valueOf("" + src.charAt(i) + src.charAt(i + 1), 16));
i += 2;
}
catch (Exception e) {
return null;
}
}
return result.toByteArray();
}
}