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/*
* @(#)TemporaryRAFFile.java 1.4 06/10/30
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/*
* @(#) TemporaryRAFFile.java 1.4 - last change made 10/30/06
*/
package com.sun.java.help.search;
import java.io.IOException;
/**
* This class can be used to read/write the contents of a RAF type files
* (i.e. DICT (Dictionary) & POSITIONS (Positions))
* file as part of JavaHelp Search Database. It uses RandamAccessFile for
* quick access to dictionary blocks (DictBlock).
* </p>
* Extension of this class serve include memory resident or unwriteable
* RAFFile.
*
* @author Roger D. Brinkley
* @author Eduardo Pelegri-Llopart
* @version 1.4 10/30/06
*/
import java.net.URL;
import java.io.RandomAccessFile;
import java.io.File;
import java.io.IOException;
import java.security.Permission;
final public class TemporaryRAFFile extends RAFFile {
private RandomAccessFile raf;
private Permission permission;
// provides only read access.
public TemporaryRAFFile(File file, Permission permission) throws IOException{
debug("TemporaryRAFFile " + file);
raf = new RandomAccessFile(file, "r");
this.permission = permission;
}
public long length() throws IOException {
// check permission
return raf.length();
}
public long getFilePointer() throws IOException {
// check permission
return raf.getFilePointer();
}
public void close() throws IOException {
// check permission
raf.close();
}
public void seek(long pos) throws IOException {
// check permission
raf.seek(pos);
}
public int readInt() throws IOException {
// check permission
return raf.readInt();
}
public int read() throws IOException {
// check permission
return raf.read();
}
public void readFully (byte b[]) throws IOException {
// check permission
raf.readFully(b);
}
public int read(byte[] b, int off, int len) throws IOException {
// check permission
return raf.read(b, off, len);
}
public void writeInt(int v) throws IOException {
// check permission
raf.writeInt(v);
}
public void write(byte b[]) throws IOException {
// check permission
raf.write(b);
}
/**
* Debug code
*/
private static final boolean debug = false;
private static void debug(String msg) {
if (debug) {
System.err.println("TemporaryRAFFile: "+msg);
}
}
}
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