| /* |
| * 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.commons.sanselan.common.bytesource; |
| |
| import java.io.BufferedInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.RandomAccessFile; |
| |
| import org.apache.commons.sanselan.util.Debug; |
| |
| public class ByteSourceFile extends ByteSource |
| { |
| private final File file; |
| |
| public ByteSourceFile(File file) |
| { |
| super(file.getName()); |
| this.file = file; |
| } |
| |
| @Override |
| public InputStream getInputStream() throws IOException |
| { |
| FileInputStream is = null; |
| BufferedInputStream bis = null; |
| is = new FileInputStream(file); |
| bis = new BufferedInputStream(is); |
| return bis; |
| } |
| |
| @Override |
| public byte[] getBlock(int start, int length) throws IOException |
| { |
| |
| RandomAccessFile raf = null; |
| try |
| { |
| raf = new RandomAccessFile(file, "r"); |
| |
| // We include a separate check for int overflow. |
| if ((start < 0) || (length < 0) || (start + length < 0) || (start + length > raf.length())) { |
| throw new IOException("Could not read block (block start: " + start |
| + ", block length: " + length + ", data length: " |
| + raf.length() + ")."); |
| } |
| |
| return getRAFBytes(raf, start, length, |
| "Could not read value from file"); |
| } |
| finally |
| { |
| try |
| { |
| if (raf != null) { |
| raf.close(); |
| } |
| } |
| catch (Exception e) |
| { |
| Debug.debug(e); |
| } |
| |
| } |
| } |
| |
| @Override |
| public long getLength() |
| { |
| return file.length(); |
| } |
| |
| @Override |
| public byte[] getAll() throws IOException |
| { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| |
| InputStream is = null; |
| try |
| { |
| is = new FileInputStream(file); |
| is = new BufferedInputStream(is); |
| byte buffer[] = new byte[1024]; |
| int read; |
| while ((read = is.read(buffer)) > 0) |
| { |
| baos.write(buffer, 0, read); |
| } |
| return baos.toByteArray(); |
| } |
| finally |
| { |
| try |
| { |
| if (null != is) |
| is.close(); |
| } |
| catch (IOException e) |
| { |
| // Debug.d |
| } |
| } |
| } |
| |
| @Override |
| public String getDescription() |
| { |
| return "File: '" + file.getAbsolutePath() + "'"; |
| } |
| |
| } |