001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.converter.stream;
018
019 import java.io.File;
020 import java.io.FileInputStream;
021 import java.io.FileNotFoundException;
022 import java.io.IOException;
023 import java.io.InputStream;
024
025 import org.apache.camel.RuntimeCamelException;
026 import org.apache.camel.StreamCache;
027
028 public class FileInputStreamCache extends InputStream implements StreamCache {
029 private FileInputStream inputStream;
030 private CachedOutputStream cachedOutputStream;
031 private File file;
032
033 public FileInputStreamCache(File file, CachedOutputStream cos) throws FileNotFoundException {
034 this.file = file;
035 cachedOutputStream = cos;
036 inputStream = new FileInputStream(file);
037 }
038
039 public void close() {
040 try {
041 inputStream.close();
042 cachedOutputStream.close();
043 } catch (Exception exception) {
044 throw new RuntimeCamelException(exception);
045 }
046 }
047
048 public void reset() {
049 try {
050 inputStream.close();
051 inputStream = new FileInputStream(file);
052 } catch (Exception exception) {
053 throw new RuntimeCamelException(exception);
054 }
055 }
056
057 public int available() throws IOException {
058 return inputStream.available();
059 }
060
061 @Override
062 public int read() throws IOException {
063 return inputStream.read();
064 }
065
066 }