/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.jsonrpc;
import org.ethereum.util.ByteUtil;
import org.spongycastle.util.encoders.Hex;
import java.math.BigInteger;
/**
* Created by Ruben on 19/11/2015.
*/
public class TypeConverter {
public static byte[] StringNumberAsBytes(String input) {
return ByteUtil.bigIntegerToBytes(StringDecimalToBigInteger(input));
}
public static BigInteger StringNumberAsBigInt(String input) throws Exception {
if (input.startsWith("0x"))
return TypeConverter.StringHexToBigInteger(input);
else
return TypeConverter.StringDecimalToBigInteger(input);
}
public static BigInteger StringHexToBigInteger(String input) {
String hexa = input.startsWith("0x") ? input.substring(2) : input;
return new BigInteger(hexa, 16);
}
private static BigInteger StringDecimalToBigInteger(String input) {
return new BigInteger(input);
}
public static byte[] StringHexToByteArray(String x) throws Exception {
if (x.startsWith("0x")) {
x = x.substring(2);
}
if (x.length() % 2 != 0) x = "0" + x;
return Hex.decode(x);
}
public static String toJsonHex(byte[] x) {
return "0x"+Hex.toHexString(x);
}
public static String toJsonHex(String x) {
return x.startsWith("0x") ? x : "0x" + x;
}
public static String toJsonHex(long n) {
return "0x"+Long.toHexString(n);
}
public static String toJsonHex(BigInteger n) {
return "0x"+ n.toString(16);
}
}