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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2003, 2004 Joe Walnes.
* Copyright (C) 2006, 2007, 2013, 2018 XStream Committers.
* All rights reserved.
*
* The software in this package is published under the terms of the BSD
* style license a copy of which has been included with this distribution in
* the LICENSE.txt file.
*
* Created on 26. September 2003 by Joe Walnes
*/
package com.feilong.lib.xstream.converters.basic;
/**
* Converts a long primitive or java.lang.Long wrapper to a String.
*
* @author Joe Walnes
*/
public class LongConverter extends AbstractSingleValueConverter{
@Override
public boolean canConvert(Class type){
return type == long.class || type == Long.class;
}
@Override
public Object fromString(String str){
int len = str.length();
if (len == 0){
throw new NumberFormatException("For input string: \"\"");
}
if (len < 17){
return Long.decode(str);
}
char c0 = str.charAt(0);
if (c0 != '0' && c0 != '#'){
return Long.decode(str);
}
char c1 = str.charAt(1);
final long high;
final long low;
if (c0 == '#' && len == 17){
high = Long.parseLong(str.substring(1, 9), 16) << 32;
low = Long.parseLong(str.substring(9, 17), 16);
}else if ((c1 == 'x' || c1 == 'X') && len == 18){
high = Long.parseLong(str.substring(2, 10), 16) << 32;
low = Long.parseLong(str.substring(10, 18), 16);
}else if (len == 23 && c1 == '1'){
high = Long.parseLong(str.substring(1, 12), 8) << 33;
low = Long.parseLong(str.substring(12, 23), 8);
}else{
return Long.decode(str);
}
final long num = high | low;
return new Long(num);
}
}