maven-javascript-plugin/src/main/java/org/apache/myfaces/trinidadbuild/plugin/javascript/obfuscator/filters/output/OutputGenerator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.myfaces.trinidadbuild.plugin.javascript.obfuscator.filters.output;

import org.apache.myfaces.trinidadbuild.plugin.javascript.obfuscator.filters.ObfuscatorFilter;
import org.apache.myfaces.trinidadbuild.plugin.javascript.obfuscator.javascript15parser.AnnotatedToken;
import org.apache.myfaces.trinidadbuild.plugin.javascript.obfuscator.javascript15parser.Token;
import java.io.BufferedOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;


public class OutputGenerator implements ObfuscatorFilter
{
  private PrintStream _outStream;

  public OutputGenerator()
  {
  }

  public OutputGenerator(OutputStream outStream)
  {
    _outStream = new PrintStream(new BufferedOutputStream(outStream));
  }

  public AnnotatedToken filter(AnnotatedToken startToken)
  {
    AnnotatedToken token = startToken;

    while (token != null)
    {
      printToken(token);
      token = token.getNext();
    }

    _outStream.flush();

    return startToken;
  }

  public void setOutputStream(OutputStream outStream)
  {
    _outStream = new PrintStream(new BufferedOutputStream(outStream));
  }

  public PrintStream getOutputStream()
  {
    return _outStream;
  }

  private void printToken(Token token)
  {
    // print special tokens first
    if (token.specialToken != null)
    {
      printToken(token.specialToken);
    }

    _outStream.print(token.image);
  }
}