edu.utah.further.core.util.text.CsvLineScanner.java Source code

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Here is the source code for edu.utah.further.core.util.text.CsvLineScanner.java

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/**
 * Copyright (C) [2013] [The FURTHeR Project]
 *
 * 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 edu.utah.further.core.util.text;

import static org.slf4j.LoggerFactory.getLogger;

import java.util.List;
import java.util.Scanner;

import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;

import edu.utah.further.core.api.collections.CollectionUtil;

/**
 * Parses a file line into a list of tokens.
 * <p>
 * -----------------------------------------------------------------------------------<br>
 * (c) 2008-2013 FURTHeR Project, Health Sciences IT, University of Utah<br>
 * Contact: {@code <further@utah.edu>}<br>
 * Biomedical Informatics, 26 South 2000 East<br>
 * Room 5775 HSEB, Salt Lake City, UT 84112<br>
 * Day Phone: 1-801-581-4080<br>
 * -----------------------------------------------------------------------------------
 *
 * @author Oren E. Livne {@code <oren.livne@utah.edu>}
 * @version Sep 2, 2010
 */
public final class CsvLineScanner extends AbstractLineScanner<List<String>> {
    // ========================= CONSTANTS =================================

    /**
     * A logger that helps identify this class' printouts.
     */
    @SuppressWarnings("unused")
    private static final Logger log = getLogger(CsvLineScanner.class);

    // ========================= CONSTRUCTORS ==============================

    /**
     * By default, uses a comma delimiter.
     */
    public CsvLineScanner() {
        setDelimiter(",");
    }

    // ========================= IMPL: LineScanner =======================

    /*
     * (non-Javadoc)
     * @see edu.utah.further.core.util.text.LineScanner#parse(java.lang.String)
     */
    @Override
    public List<String> parse(final String line) {
        final List<String> tokens = CollectionUtil.newList();
        if (StringUtils.isNotBlank(line)) {
            try (final Scanner scanner = new Scanner(line)) {
                scanner.useDelimiter(getDelimiter());
                while (scanner.hasNext()) {
                    tokens.add(scanner.next());
                }
            }

        }
        return tokens;
    }

}