com.mgmtp.jfunk.common.util.JFunkUtils.java Source code

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Here is the source code for com.mgmtp.jfunk.common.util.JFunkUtils.java

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/*
 * Copyright (c) 2015 mgm technology partners GmbH
 *
 * 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.
 */
package com.mgmtp.jfunk.common.util;

import java.util.regex.Pattern;

import org.apache.commons.lang3.StringUtils;

/**
 * Utility functions.
 * 
 * @author rnaegele
 * @since 3.1.0
 */
public class JFunkUtils {

    private static final Pattern NBSP_PATTERN = Pattern.compile("\\u00A0+");

    /**
     * Removes leading and trailing whitespace and replaces sequences of whitespace characters by a single space. As opposed to
     * {@link Character#isWhitespace(char)} or {@link StringUtils#isWhitespace(CharSequence)}, this funtion also considers
     * non-breaking spaces (ASCII 160) as whitespace.
     * 
     * @param value
     *            the string to normalize whitespaces from, may be null
     * @return the modified string with whitespace normalized, or {@code null} if null was passed in
     */
    public static String normalizeSpace(final String value) {
        if (value == null) {
            return null;
        }
        String result = NBSP_PATTERN.matcher(value).replaceAll(" ");
        return StringUtils.normalizeSpace(result);
    }
}