/*
* Copyright 2002-2005 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.commons.vfs.provider.local;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.provider.AbstractRandomAccessContent;
import org.apache.commons.vfs.util.RandomAccessMode;
import java.io.EOFException;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;
/**
* RandomAccess for local files
*
* @author <a href="mailto:imario@apache.org">Mario Ivankovits</a>
*/
class LocalFileRandomAccessContent extends AbstractRandomAccessContent
{
// private final LocalFile localFile;
final private RandomAccessFile raf;
final private InputStream rafis;
LocalFileRandomAccessContent(final File localFile, final RandomAccessMode mode) throws FileSystemException
{
super(mode);
StringBuffer modes = new StringBuffer(2);
if (mode.requestRead())
{
modes.append('r');
}
if (mode.requestWrite())
{
modes.append('w');
}
try
{
raf = new RandomAccessFile(localFile, modes.toString());
rafis = new InputStream()
{
public int read() throws IOException
{
try
{
return raf.readByte();
}
catch (EOFException e)
{
return -1;
}
}
public long skip(long n) throws IOException
{
raf.seek(raf.getFilePointer() + n);
return n;
}
public void close() throws IOException
{
raf.close();
}
public int read(byte b[]) throws IOException
{
return raf.read(b);
}
public int read(byte b[], int off, int len) throws IOException
{
return raf.read(b, off, len);
}
};
}
catch (FileNotFoundException e)
{
throw new FileSystemException("vfs.provider/random-access-open-failed.error", localFile);
}
}
public long getFilePointer() throws IOException
{
return raf.getFilePointer();
}
public void seek(long pos) throws IOException
{
raf.seek(pos);
}
public long length() throws IOException
{
return raf.length();
}
public void close() throws IOException
{
raf.close();
}
public byte readByte() throws IOException
{
return raf.readByte();
}
public char readChar() throws IOException
{
return raf.readChar();
}
public double readDouble() throws IOException
{
return raf.readDouble();
}
public float readFloat() throws IOException
{
return raf.readFloat();
}
public int readInt() throws IOException
{
return raf.readInt();
}
public int readUnsignedByte() throws IOException
{
return raf.readUnsignedByte();
}
public int readUnsignedShort() throws IOException
{
return raf.readUnsignedShort();
}
public long readLong() throws IOException
{
return raf.readLong();
}
public short readShort() throws IOException
{
return raf.readShort();
}
public boolean readBoolean() throws IOException
{
return raf.readBoolean();
}
public int skipBytes(int n) throws IOException
{
return raf.skipBytes(n);
}
public void readFully(byte b[]) throws IOException
{
raf.readFully(b);
}
public void readFully(byte b[], int off, int len) throws IOException
{
raf.readFully(b, off, len);
}
public String readUTF() throws IOException
{
return raf.readUTF();
}
public void writeDouble(double v) throws IOException
{
raf.writeDouble(v);
}
public void writeFloat(float v) throws IOException
{
raf.writeFloat(v);
}
public void write(int b) throws IOException
{
raf.write(b);
}
public void writeByte(int v) throws IOException
{
raf.writeByte(v);
}
public void writeChar(int v) throws IOException
{
raf.writeChar(v);
}
public void writeInt(int v) throws IOException
{
raf.writeInt(v);
}
public void writeShort(int v) throws IOException
{
raf.writeShort(v);
}
public void writeLong(long v) throws IOException
{
raf.writeLong(v);
}
public void writeBoolean(boolean v) throws IOException
{
raf.writeBoolean(v);
}
public void write(byte b[]) throws IOException
{
raf.write(b);
}
public void write(byte b[], int off, int len) throws IOException
{
raf.write(b, off, len);
}
public void writeBytes(String s) throws IOException
{
raf.writeBytes(s);
}
public void writeChars(String s) throws IOException
{
raf.writeChars(s);
}
public void writeUTF(String str) throws IOException
{
raf.writeUTF(str);
}
public InputStream getInputStream() throws IOException
{
return rafis;
}
}