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117 lines
2.9 KiB
C++
117 lines
2.9 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_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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#ifdef DEBUG_warren
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// printf("read %d from %s\n", *bytesRead, mEntryName);
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#endif
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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::Close()
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{
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NS_IF_RELEASE(mJAR);
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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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mEntryName = nsCRT::strdup(aFilename);
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PRInt32 result;
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result = Zip()->ReadInit(mEntryName, &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), mEntryName(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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if (mEntryName) nsCRT::free(mEntryName);
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}
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