/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite 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 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
package com.examples.with.different.packagename;
import java.math.BigInteger;
/**
* Snippet from Lang project
* (org.apache.commons.lang3.math.NumberUtils)
*/
public class ClassNumberUtils {
public static BigInteger createBigInteger(final String str) {
if (str == null) {
return null;
}
int pos = 0; // offset within string
int radix = 10;
boolean negate = false; // need to negate later?
if (str.startsWith("-")) {
negate = true;
pos = 1;
}
if (str.startsWith("0x", pos) || str.startsWith("0X", pos)) { // hex
radix = 16;
pos += 2;
} else if (str.startsWith("#", pos)) { // alternative hex (allowed by Long/Integer)
radix = 16;
pos ++;
} else if (str.startsWith("0", pos) && str.length() > pos + 1) { // octal; so long as there are additional digits
radix = 8;
pos ++;
} // default is to treat as decimal
final BigInteger value = new BigInteger(str.substring(pos), radix);
return negate ? value.negate() : value;
}
}