Mega Code Archive
Chop i characters off the end of a string
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import java.util.StringTokenizer;
/**
*
* @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
* @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
* @version $Id: StringUtils.java 685685 2008-08-13 21:43:27Z nbubna $
*/
public class Main {
/**
* Line separator for the OS we are operating on.
*/
private static final String EOL = System.getProperty("line.separator");
/**
* Chop i characters off the end of a string.
* This method assumes that any EOL characters in String s
* and the platform EOL will be the same.
* A 2 character EOL will count as 1 character.
*
* @param s String to chop.
* @param i Number of characters to chop.
* @return String with processed answer.
*/
public static String chop(String s, int i)
{
return chop(s, i, EOL);
}
/**
* Chop i characters off the end of a string.
* A 2 character EOL will count as 1 character.
*
* @param s String to chop.
* @param i Number of characters to chop.
* @param eol A String representing the EOL (end of line).
* @return String with processed answer.
*/
public static String chop(String s, int i, String eol)
{
if ( i == 0 || s == null || eol == null )
{
return s;
}
int length = s.length();
/*
* if it is a 2 char EOL and the string ends with
* it, nip it off. The EOL in this case is treated like 1 character
*/
if ( eol.length() == 2 && s.endsWith(eol ))
{
length -= 2;
i -= 1;
}
if ( i > 0)
{
length -= i;
}
if ( length < 0)
{
length = 0;
}
return s.substring( 0, length);
}
}
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