mirror of
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154 lines
3.7 KiB
C++
154 lines
3.7 KiB
C++
/* nsJARInputStream.cpp
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Netscape Communicator source code.
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Mitch Stoltz <mstoltz@netscape.com>
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*/
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#include "nsJARInputStream.h"
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#include "zipfile.h" // defines ZIP error codes
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#include "nsZipArchive.h"
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/*---------------------------------------------
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* nsISupports implementation
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*--------------------------------------------*/
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsJARInputStream, nsIInputStream);
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/*----------------------------------------------------------
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* nsJARInputStream implementation
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*--------------------------------------------------------*/
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NS_IMETHODIMP
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nsJARInputStream::Available(PRUint32 *_retval)
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{
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if (Zip() == 0)
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*_retval = 0;
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else
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*_retval = Zip()->Available(mReadInfo);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsJARInputStream::Read(char* buf, PRUint32 count, PRUint32 *bytesRead)
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{
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if (Zip() == nsnull)
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{
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*bytesRead = 0;
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return NS_OK;
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}
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PRInt32 err = Zip()->Read(mReadInfo, buf, count, bytesRead);
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return err == ZIP_OK ? NS_OK : NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsJARInputStream::ReadSegments(nsWriteSegmentFun writer, void * closure, PRUint32 count, PRUint32 *_retval)
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{
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char *readBuf = (char *)nsMemory::Alloc(count);
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PRUint32 nBytes;
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if (!readBuf)
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return NS_ERROR_OUT_OF_MEMORY;
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nsresult rv = Read(readBuf, count, &nBytes);
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*_retval = 0;
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if (NS_SUCCEEDED(rv)) {
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rv = writer(this, closure, readBuf, 0, nBytes, _retval);
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NS_ASSERTION(nBytes == *_retval, "Didn't write all Data.");
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}
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nsMemory::Free(readBuf);
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return rv;
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}
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NS_IMETHODIMP
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nsJARInputStream::GetNonBlocking(PRBool *aNonBlocking)
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{
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NS_NOTREACHED("GetNonBlocking");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsJARInputStream::GetObserver(nsIInputStreamObserver * *aObserver)
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{
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NS_NOTREACHED("GetObserver");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsJARInputStream::SetObserver(nsIInputStreamObserver * aObserver)
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{
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NS_NOTREACHED("SetObserver");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsJARInputStream::Close()
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{
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NS_IF_RELEASE(mJAR);
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if (mReadInfo)
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delete mReadInfo;
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return NS_OK;
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}
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nsresult
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nsJARInputStream::Init(nsJAR* aJAR, const char* aFilename)
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{
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if (!aFilename)
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return NS_ERROR_NULL_POINTER;
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mJAR = aJAR;
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NS_ADDREF(mJAR);
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PRInt32 result;
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result = Zip()->ReadInit(aFilename, &mReadInfo);
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if (result != ZIP_OK)
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return NS_ERROR_FAILURE;
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return NS_OK;
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}
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NS_METHOD
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nsJARInputStream::Create(nsISupports* ignored, const nsIID& aIID, void* *aResult)
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{
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nsJARInputStream* is = new nsJARInputStream();
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if (is == nsnull)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(is);
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nsresult rv = is->QueryInterface(aIID, aResult);
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NS_RELEASE(is);
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return rv;
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}
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//----------------------------------------------
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// nsJARInputStream constructor and destructor
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//----------------------------------------------
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nsJARInputStream::nsJARInputStream()
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: mJAR(nsnull), mReadInfo(nsnull)
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{
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NS_INIT_REFCNT();
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}
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nsJARInputStream::~nsJARInputStream()
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{
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Close();
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}
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