FileBinarySource.java

/*
    Priha - A JSR-170 implementation library.

    Copyright (C) 2007-2009 Janne Jalkanen (Janne.Jalkanen@iki.fi)

    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.priha.core.binary;

import java.io.*;

import org.priha.util.FileUtil;

/**
 *  Represents a BinarySource which is backed by a File on the
 *  Filesystem itself.
 */
public class FileBinarySource implements BinarySource
{
    private File m_file;
    
    /**
     * Creates a temporary file for the given InputStream.
     */
    public FileBinarySource( InputStream in ) throws IOException
    {
        m_file = File.createTempFile("priha", "bin");
        
        OutputStream out = new FileOutputStream(m_file);
        
        FileUtil.copyContents(in, out);
        
        out.close();
    }
    
    public FileBinarySource( File f )
    {
        m_file = f;
    }
    
    public long getLength()
    {
        return m_file.length();
    }

    public InputStream getStream() throws FileNotFoundException
    {
        return new FileInputStream( m_file );
    }
    
    public FileBinarySource clone()
    {
        return new FileBinarySource(m_file);
    }
}