tests/src/java/org/apache/log4j/util/ControlFilter.java

/*
 * Copyright 1999,2004 The Apache Software Foundation.
 * 
 * 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 org.apache.log4j.util;

import org.apache.oro.text.perl.Perl5Util;


public class ControlFilter implements Filter {
  Perl5Util util = new Perl5Util();
  String[] allowedPatterns;

  public ControlFilter(String[] allowedPatterns) {
    this.allowedPatterns = allowedPatterns;
  }

  public String filter(String in) throws UnexpectedFormatException {
    int len = allowedPatterns.length;

    for (int i = 0; i < len; i++) {
      //System.out.println("["+allowedPatterns[i]+"]");
      if (util.match("/" + allowedPatterns[i] + "/", in)) {
        //System.out.println("["+in+"] matched ["+allowedPatterns[i]);
        return in;
      }
    }

    throw new UnexpectedFormatException("[" + in + "]");
  }
}