/* * 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.pdfbox.filter; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import org.apache.pdfbox.io.ASCII85InputStream; import org.apache.pdfbox.io.ASCII85OutputStream; import org.apache.pdfbox.cos.COSDictionary; /** * This is the used for the ASCIIHexDecode filter. * * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a> * @version $Revision: 1.8 $ */ public class ASCII85Filter implements Filter { /** * {@inheritDoc} */ public void decode( InputStream compressedData, OutputStream result, COSDictionary options, int filterIndex ) throws IOException { ASCII85InputStream is = null; try { is = new ASCII85InputStream(compressedData); byte[] buffer = new byte[1024]; int amountRead = 0; while( (amountRead = is.read( buffer, 0, 1024) ) != -1 ) { result.write(buffer, 0, amountRead); } result.flush(); } finally { if( is != null ) { is.close(); } } } /** * {@inheritDoc} */ public void encode( InputStream rawData, OutputStream result, COSDictionary options, int filterIndex ) throws IOException { ASCII85OutputStream os = new ASCII85OutputStream(result); byte[] buffer = new byte[1024]; int amountRead = 0; while( (amountRead = rawData.read( buffer, 0, 1024 )) != -1 ) { os.write( buffer, 0, amountRead ); } os.close(); result.flush(); } }