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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* nsJARInputStream.cpp
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Netscape Communicator source code.
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Mitch Stoltz <mstoltz@netscape.com>
*/
#include "nsJARInputStream.h"
#include "zipfile.h" // defines ZIP error codes
#include "nsZipArchive.h"
/*---------------------------------------------
* nsISupports implementation
*--------------------------------------------*/
NS_IMPL_THREADSAFE_ISUPPORTS1(nsJARInputStream, nsIInputStream)
/*----------------------------------------------------------
* nsJARInputStream implementation
*--------------------------------------------------------*/
NS_IMETHODIMP
nsJARInputStream::Available(PRUint32 *_retval)
{
*_retval = mReadInfo.Available();
return NS_OK;
}
NS_IMETHODIMP
nsJARInputStream::Read(char* buf, PRUint32 count, PRUint32 *bytesRead)
{
if (!mJAR)
return NS_BASE_STREAM_CLOSED;
PRInt32 err = mReadInfo.Read(buf, count, bytesRead);
return err == ZIP_OK ? NS_OK : NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsJARInputStream::ReadSegments(nsWriteSegmentFun writer, void * closure, PRUint32 count, PRUint32 *_retval)
{
// don't have a buffer to read from, so this better not be called!
NS_NOTREACHED("Consumers should be using Read()!");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsJARInputStream::IsNonBlocking(PRBool *aNonBlocking)
{
*aNonBlocking = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsJARInputStream::Close()
{
NS_IF_RELEASE(mJAR);
return NS_OK;
}
nsresult
nsJARInputStream::Init(nsJAR* aJAR, const char* aFilename)
{
if (!aFilename)
return NS_ERROR_NULL_POINTER;
mJAR = aJAR;
NS_ADDREF(mJAR);
PRInt32 result;
PRFileDesc* fd = aJAR->OpenFile();
NS_ASSERTION(fd, "Couldn't open JAR!");
if (!fd)
return NS_ERROR_UNEXPECTED;
result = aJAR->mZip.ReadInit(aFilename, &mReadInfo, fd);
if (result != ZIP_OK)
return NS_ERROR_FAILURE;
return NS_OK;
}
//----------------------------------------------
// nsJARInputStream constructor and destructor
//----------------------------------------------
nsJARInputStream::nsJARInputStream()
: mJAR(nsnull)
{
}
nsJARInputStream::~nsJARInputStream()
{
Close();
}
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