//
// ========================================================================
// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
/*
* Note: This class was extracted from org.eclipse.jetty.util.StringUtil.
* It contains only those methods that we need that are not already part
* of the general servlet API. (We can not rely on jetty being present
* since the WAR deployment does not bundle the jetty dependencies.)
*/
package com.bigdata.rdf.sail.webapp.client;
/** Fast String Utilities.
*
* These string utilities provide both convenience methods and
* performance improvements over most standard library versions. The
* main aim of the optimizations is to avoid object creation unless
* absolutely required.
*/
public class StringUtil {
/**
* Convert String to an long. Parses up to the first non-numeric character.
* If no number is found an IllegalArgumentException is thrown
*
* @param string
* A String containing an integer.
* @return an int
*/
public static long toLong(final String string) {
long val = 0;
boolean started = false;
boolean minus = false;
for (int i = 0; i < string.length(); i++) {
char b = string.charAt(i);
if (b <= ' ') {
if (started)
break;
} else if (b >= '0' && b <= '9') {
val = val * 10L + (b - '0');
started = true;
} else if (b == '-' && !started) {
minus = true;
} else
break;
}
if (started)
return minus ? (-val) : val;
throw new NumberFormatException(string);
}
}