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Add a utility class for some higher-level functions

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2012-06-29 03:35:41 +00:00
parent 7743e29f8a
commit 92f1e321ac
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src/com/webcodepro/shrinkit/Utilities.java Normal file
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package com.webcodepro.shrinkit;
/*
* Copyright (C) 2012 by David Schmidt
* david__schmidt at users.sourceforge.net
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import com.webcodepro.shrinkit.io.LittleEndianByteInputStream;
/**
* Some higher-level utilities for dealing with a NuFX archive.
*
* @author david__schmidt@users.sourceforge.net
*/
public class Utilities
{
/**
* Interpret a SDK NuFile/NuFX/Shrinkit archive as a full disk image.
*
* @return byte[] buffer containing full disk of data; null if unable to read
* @throws IllegalArgumentException if the filename is not able to be read
* @throws IOException the file has some malformed-ness about it
*/
public static byte[] unpackSDKFile(String fileName) throws IOException {
byte buffer[] = null;
ThreadRecord dataThread = null;
File file = new File(fileName);
if (file.isDirectory()) {
throw new IllegalArgumentException("'" + fileName + "' is not a file.");
}
InputStream is = new FileInputStream(file);
NuFileArchive a = new NuFileArchive(is);
for (HeaderBlock b : a.getHeaderBlocks()) {
for (ThreadRecord r : b.getThreadRecords()) {
try
{
if (r.getThreadKind() == ThreadKind.DISK_IMAGE)
{
dataThread = r;
}
}
catch (Exception ex)
{
System.out.println(ex);
}
}
dataThread.readThreadData(new LittleEndianByteInputStream(dataThread.getRawInputStream()));
InputStream fis = dataThread.getInputStream();
int dmgLen = (int)(dataThread.getThreadEof());
buffer = new byte[dmgLen];
fis.read(buffer,0,dmgLen);
fis.close();
}
return buffer;
}
}