Java String Truncate truncate(String str, int byteLength)

Description

truncate

License

Apache License

Declaration

public static String truncate(String str, int byteLength) 

Method Source Code

//package com.java2s;
/**//from   w  w  w.  j  a v a  2 s  .c  o m
 * Copyright 2016 benjobs
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.
 */

public class Main {

    public static String truncate(String str, int byteLength) {
        if (str == null) {
            return null;
        }
        if (str.length() == 0) {
            return str;
        }
        if (byteLength < 0) {
            throw new IllegalArgumentException("Parameter byteLength must be great than 0");
        }
        char[] chs = str.toCharArray();
        int i = 0;
        int len = 0;
        while ((len < byteLength) && (i < chs.length)) {
            len = (chs[i++] > 0xff) ? (len + 2) : (len + 1);
        }
        if (len > byteLength) {
            i--;
        }
        return new String(chs, 0, i);
    }
}

Related

1. truncate(String s, int stop, String suf)
2. truncate(String s, int truncLength, boolean removeWhiteSpace)
3. truncate(String source, int maxLength, String cutoffReplacement)
4. truncate(String src, int maxChars, boolean addEllipses)
5. truncate(String str)
6. truncate(String str, int chars)
7. truncate(String str, int len)
8. truncate(String str, int length)
9. truncate(String str, int length)