Java String Chop chopLenghtyString(String title, int maxLen)

Description

When the title is really long and without whitespaces it really messes up the ui.

License

Apache License

Declaration

public static String chopLenghtyString(String title, int maxLen) 

Method Source Code

//package com.java2s;
/*/*from w  ww . j  ava  2s . c om*/
 * Copyright 2012 Cedric Dandoy
 *
 *    Licensed 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 {
    /**
     * When the title is really long and without whitespaces it really messes up the ui.
     * This method inserts whitespaces in such case.
     */
    public static String chopLenghtyString(String title, int maxLen) {
        if (isBreakNeeded(title, maxLen)) {
            title = chopString(title, maxLen);
        }
        return title;
    }

    private static boolean isBreakNeeded(String title, int maxLen) {
        if (title.length() <= maxLen) {
            return false;
        }
        int len = 0;
        for (int i = 0; i < title.length(); i++) {
            final char c = title.charAt(i);
            if (isBreakable(c)) {
                len = 0;
            } else {
                len++;
                if (len > maxLen) {
                    return true;
                }
            }
        }
        return false;
    }

    private static String chopString(String title, int maxLen) {
        final int length = title.length();
        final StringBuilder stringBuilder = new StringBuilder(length + 10);
        int len = 0;
        for (int i = 0; i < length; i++) {
            final char c = title.charAt(i);
            if (isBreakable(c)) {
                len = 0;
            } else {
                len++;
            }
            stringBuilder.append(c);
            if (len >= maxLen) {
                if (i + 1 < length) {
                    stringBuilder.append(' ');
                    len = 0;
                }
            }
        }
        return stringBuilder.toString();
    }

    private static boolean isBreakable(char c) {
        return Character.isWhitespace(c);
    }
}

Related

1. chopFirstComponent(String s)
2. chopFractionalPart(float original, int no_of_digits )
3. chopId(String name)
4. chopIfMatch(StringBuilder sb, char ch)
5. chopLast(String value, int chars)
6. chopLongLinesAtSpaces(int maxLineLenght, String text)
7. chopNull(String str)
8. chopPrefix(String x, String prefix)
9. ChopRt(String this_string, String chomp_off)