MyRandomAccessFile.java

package SevenZip;

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;

public  class MyRandomAccessFile extends SevenZip.IInStream  {
    
	RandomAccessFile _file;
    
    public MyRandomAccessFile(File file, String mode) throws IOException {
    	this(file.getAbsolutePath(), mode);
    }
    
    public MyRandomAccessFile(String filename,String mode) throws IOException {
        _file  = new RandomAccessFile(filename,mode);
    }
    
    public long Seek(long offset, int seekOrigin) throws IOException {
    	if (seekOrigin == STREAM_SEEK_SET) {
            _file.seek(offset);
        }
        else if (seekOrigin == STREAM_SEEK_CUR) {
            _file.seek(offset + _file.getFilePointer());
        }
        return _file.getFilePointer();
    }
    
    public int read() throws IOException {
        return _file.read();
    }
 
    public int read(byte [] data, int off, int size) throws IOException {
        return _file.read(data,off,size);
    }
        
    public int read(byte [] data, int size) throws IOException {
        return _file.read(data,0,size);
    }
    
    public void close() throws IOException {
        _file.close();
        _file = null;
    }   
}