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package jpff;
/*
* File class
*
* Copyright (c) 2010, Joachim Metz <joachim.metz@gmail.com>
*
* Refer to AUTHORS for acknowledgements.
*
* This software is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software. If not, see <http://www.gnu.org/licenses/>.
*/
import jpff.Exception;
/**
* File class
* Wraps libpff_file using JNI
*/
public class File
{
/**
* Internal reference of the libpff file
*/
protected long libpff_file = 0;
/* Internal functions
*/
private static native void internal_class_initialize();
private native void internal_initialize();
private native void internal_free();
private native void internal_open(
String filename,
int access_flags )
throws jpff.Exception;
private native void internal_close()
throws jpff.Exception;
/* External functions
*/
/**
* Creates a new file
*/
public File()
{
synchronized(
this )
{
internal_initialize();
}
}
/**
* Destructor
*/
protected void finalize()
{
synchronized(
this )
{
internal_free();
}
}
/**
* Opens a file
*
* @param filename the name of the file
* @param access_flags the access flags (e.g. ACCESS_FLAGS_READ)
*/
public void open(
String filename,
int access_flags )
throws jpff.Exception
{
synchronized(
this )
{
internal_open(
filename,
access_flags );
}
}
/**
* Closes a file
*/
public void close()
throws jpff.Exception
{
synchronized(
this )
{
internal_close();
}
}
static
{
try
{
System.loadLibrary(
"jpff" );
}
catch( Throwable throwable )
{
System.err.println(
"Unable to load jpff: " + throwable );
}
internal_class_initialize();
}
}
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