Removes all illegal filename characters from a given String - Java java.io

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Description

Removes all illegal filename characters from a given String

Demo Code

/*******************************************************************************
 * Copyright (c) 2008 Dennis Schenk, Peter Siska.
 * 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:/*from   w  w w  .  j  a  v a 2 s  .  c o  m*/
 *     Dennis Schenk - initial implementation
 *     Peter Siska    - initial implementation
 *******************************************************************************/
//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String name = "java2s.com";
        boolean singleSpaces = true;
        System.out.println(removeIllegalCharacters(name, singleSpaces));
    }

    /**
     * Removes all illegal filename characters from a given String
     * 
     * @param name
     * @param singleSpaces if true, no double spaces are allowed; they get removed.
     * @return String
     * @see "http://en.wikipedia.org/wiki/Filename#Reserved_characters_and_words"
     */
    public static final String removeIllegalCharacters(String name,
            final boolean singleSpaces) {
        // remove illegal characters and replace with a more friendly char ;)
        String safe = name.trim();

        // remove illegal characters
        safe = safe.replaceAll(
                "[\\/|\\\\|\\*|\\:|\\||\"|\'|\\<|\\>|\\{|\\}|\\?|\\%|,]",
                "");

        // replace . dots with _ and remove the _ if at the end
        safe = safe.replaceAll("\\.", "_");
        if (safe.endsWith("_")) {
            safe = safe.substring(0, safe.length() - 1);
        }

        // replace whitespace characters with _
        safe = safe.replaceAll("\\s+", "_");

        // replace double or more spaces with a single one
        if (singleSpaces) {
            safe = safe.replaceAll("_{2,}", "_");
        }

        return safe;
    }
}

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