Source Code : A suffix based file filter.

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A suffix based file filter.

 


/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

import java.io.File;
import java.io.FileFilter;

/**
 * A <em>suffix</em> based file filter.
 * 
 * @version <tt>$Revision: 1958 $</tt>
 * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
 */
public class FileSuffixFilter implements FileFilter {
  /** A list of suffixes which files must have to be accepted. */
  protected final String suffixes[];

  /** Flag to signal that we want to ignore the case. */
  protected final boolean ignoreCase;

  /**
   * Construct a <tt>FileSuffixFilter</tt>.
   * 
   * @param suffixes
   *          A list of suffixes which files mut have to be accepted.
   * @param ignoreCase
   *          <tt>True</tt> if the filter should be case-insensitive.
   */
  public FileSuffixFilter(final String suffixes[], final boolean ignoreCase) {
    this.ignoreCase = ignoreCase;
    if (ignoreCase) {
      this.suffixes = new String[suffixes.length];
      for (int i = 0; i < suffixes.length; i++) {
        this.suffixes[i] = suffixes[i].toLowerCase();
      }
    } else {
      this.suffixes = suffixes;
    }
  }

  /**
   * Construct a <tt>FileSuffixFilter</tt>.
   * 
   * @param suffixes
   *          A list of suffixes which files mut have to be accepted.
   */
  public FileSuffixFilter(final String suffixes[]) {
    this(suffixes, false);
  }

  /**
   * Construct a <tt>FileSuffixFilter</tt>.
   * 
   * @param suffix
   *          The suffix which files must have to be accepted.
   * @param ignoreCase
   *          <tt>True</tt> if the filter should be case-insensitive.
   */
  public FileSuffixFilter(final String suffix, final boolean ignoreCase) {
    this(new String[] { suffix }, ignoreCase);
  }

  /**
   * Construct a case sensitive <tt>FileSuffixFilter</tt>.
   * 
   * @param suffix
   *          The suffix which files must have to be accepted.
   */
  public FileSuffixFilter(final String suffix) {
    this(suffix, false);
  }

  /**
   * Check if a file is acceptible.
   * 
   * @param file
   *          The file to check.
   * @return <tt>true</tt> if the file is acceptable.
   */
  public boolean accept(final File file) {
    boolean success = false;

    for (int i = 0; i < suffixes.length && !success; i++) {
      if (ignoreCase)
        success = file.getName().toLowerCase().endsWith(suffixes[i]);
      else
        success = file.getName().endsWith(suffixes[i]);
    }

    return success;
  }
}

   
  

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