it.cnr.isti.hpc.dexter.spot.cleanpipe.cleaner.StripCleaner.java Source code

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Here is the source code for it.cnr.isti.hpc.dexter.spot.cleanpipe.cleaner.StripCleaner.java

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/**
 *  Copyright 2012 Diego Ceccarelli
 *
 *  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 it.cnr.isti.hpc.dexter.spot.cleanpipe.cleaner;

import org.apache.commons.lang3.StringUtils;

/**
 * StripCleaner trims characters at the beginning of at the end of a spot. More
 * spaces in the final string will be replaced by one single space.
 * 
 * 
 * @author Diego Ceccarelli, diego.ceccarelli@isti.cnr.it created on 21/lug/2012
 */
public class StripCleaner extends Cleaner<String> {

    private static final String DEFAULT_TRIM_CHARS = ",#*-!`{}~[]='<>:%/";
    private String trimChars;

    /**
     * Default strip cleaner, will strip the characters
     * <code>,#*-!`{}~[]='<>:%/</code> if they are in the beginning or at the
     * end of a string.
     * 
     */
    public StripCleaner() {
        this(DEFAULT_TRIM_CHARS);
    }

    /**
     * Default strip cleaner, will strip the characters given in a string if
     * they are in the beginning or at the end of a string.
     * 
     * @param trimChars
     *            - a string containing the characters to be stripped out
     */
    public StripCleaner(String trimChars) {
        this.trimChars = trimChars;
    }

    public String clean(String spot) {
        spot = trim(spot);
        spot = spot.replaceAll(" +", " ");
        spot = spot.trim();
        return spot;
    }

    private String trim(String str) {
        // return str.trim();
        return StringUtils.strip(str, trimChars);
    }

}