Java String Chop chopLongLinesAtSpaces(int maxLineLenght, String text)

Description

chop Long Lines At Spaces

License

Open Source License

Declaration

public static String chopLongLinesAtSpaces(int maxLineLenght, String text) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2010, 2012 Tasktop Technologies
 * Copyright (c) 2010, 2011 SpringSource, a division of VMware
 * /*from w ww.j a  va2s .c  o  m*/
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Tasktop Technologies - initial API and implementation
 ******************************************************************************/

public class Main {
    public static String chopLongLinesAtSpaces(int maxLineLenght, String text) {
        StringBuilder result = new StringBuilder();

        int currentIndex = 0;

        while (currentIndex < text.length()) {
            int newLineIdx = text.indexOf("\n", currentIndex);
            String line;

            // Get the next line
            if (newLineIdx == -1) {
                line = text.substring(currentIndex);
                currentIndex = text.length();
            } else {
                line = text.substring(currentIndex, newLineIdx + 1);
                currentIndex = newLineIdx + 1;
            }

            // Chop it up
            while (shouldChop(maxLineLenght, line)) {
                int spaceIdx = line.substring(0, maxLineLenght).lastIndexOf(" ");
                if (spaceIdx != -1) {
                    result.append(line.substring(0, spaceIdx)).append("\n");
                    line = line.substring(spaceIdx + 1);
                } else {
                    result.append(line.substring(0, maxLineLenght)).append("\n");
                    line = line.substring(maxLineLenght);
                }

            }
            result.append(line);

        }

        return result.toString();
    }

    private static boolean shouldChop(int maxLineLenght, String line) {
        return line.length() > maxLineLenght && !(line.length() == maxLineLenght + 1 && line.endsWith("\n"));
    }
}

Related

1. chopFractionalPart(float original, int no_of_digits )
2. chopId(String name)
3. chopIfMatch(StringBuilder sb, char ch)
4. chopLast(String value, int chars)
5. chopLenghtyString(String title, int maxLen)
6. chopNull(String str)
7. chopPrefix(String x, String prefix)
8. ChopRt(String this_string, String chomp_off)
9. chopScheme(String path)