Java String Shorten shorten(String s, int maxLength)

Description

Returns a single line string that is no longer than maxLength .

License

Apache License

Declaration

static String shorten(String s, int maxLength) 

Method Source Code

//package com.java2s;
/*//from w  ww . ja  va2 s.  c o  m
 * 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.
 */

public class Main {
    /**
     * Returns a single line string that is no longer than {@code maxLength}.
     * If will truncate the string at line-breaks too.
     * The truncation is always signaled with a a {@code "..."} at the end of the result string.  
     */
    static String shorten(String s, int maxLength) {
        if (maxLength < 5)
            maxLength = 5;

        boolean isTruncated = false;

        int brIdx = s.indexOf('\n');
        if (brIdx != -1) {
            s = s.substring(0, brIdx);
            isTruncated = true;
        }
        ;
        brIdx = s.indexOf('\r');
        if (brIdx != -1) {
            s = s.substring(0, brIdx);
            isTruncated = true;
        }

        if (s.length() > maxLength) {
            s = s.substring(0, maxLength - 3);
            isTruncated = true;
        }

        if (!isTruncated) {
            return s;
        } else {
            if (s.endsWith(".")) {
                if (s.endsWith("..")) {
                    if (s.endsWith("...")) {
                        return s;
                    } else {
                        return s + ".";
                    }
                } else {
                    return s + "..";
                }
            } else {
                return s + "...";
            }
        }
    }
}

Related

1. shorten(String s, int len)
2. shorten(String s, int length)
3. shorten(String s, int length, String suffix)
4. shorten(String s, int length, String suffix)
5. shorten(String s, int max)
6. shorten(String script, int length)
7. shorten(String str, int length)
8. shorten(String str, int length)
9. shorten(String string, boolean isPrefix)