mirror of
https://github.com/rn10950/RetroZilla.git
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122 lines
4.5 KiB
C++
122 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsInputStreamPump_h__
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#define nsInputStreamPump_h__
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#include "nsIInputStreamPump.h"
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#include "nsIInputStream.h"
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#include "nsIURI.h"
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#include "nsILoadGroup.h"
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#include "nsIStreamListener.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIProgressEventSink.h"
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#include "nsIAsyncInputStream.h"
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#include "nsIEventQueue.h"
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#include "nsCOMPtr.h"
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#include "nsInt64.h"
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class nsInputStreamPump : public nsIInputStreamPump
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, public nsIInputStreamCallback
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIREQUEST
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NS_DECL_NSIINPUTSTREAMPUMP
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NS_DECL_NSIINPUTSTREAMCALLBACK
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nsInputStreamPump();
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~nsInputStreamPump();
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static NS_HIDDEN_(nsresult)
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Create(nsInputStreamPump **result,
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nsIInputStream *stream,
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PRInt64 streamPos = -1,
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PRInt64 streamLen = -1,
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PRUint32 segsize = 0,
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PRUint32 segcount = 0,
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PRBool closeWhenDone = PR_FALSE);
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typedef void (*PeekSegmentFun)(void *closure, const PRUint8 *buf,
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PRUint32 bufLen);
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/**
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* Peek into the first chunk of data that's in the stream. Note that this
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* method will not call the callback when there is no data in the stream.
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* The callback will be called at most once.
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*
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* The data from the stream will not be consumed, i.e. the pump's listener
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* can still read all the data.
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*
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* Do not call before asyncRead. Do not call after onStopRequest.
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*/
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NS_HIDDEN_(void) PeekStream(PeekSegmentFun callback, void *closure);
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protected:
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enum {
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STATE_IDLE,
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STATE_START,
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STATE_TRANSFER,
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STATE_STOP
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};
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nsresult EnsureWaiting();
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PRUint32 OnStateStart();
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PRUint32 OnStateTransfer();
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PRUint32 OnStateStop();
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PRUint32 mState;
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nsCOMPtr<nsILoadGroup> mLoadGroup;
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nsCOMPtr<nsIStreamListener> mListener;
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nsCOMPtr<nsISupports> mListenerContext;
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nsCOMPtr<nsIEventQueue> mEventQ;
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nsCOMPtr<nsIInputStream> mStream;
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nsCOMPtr<nsIAsyncInputStream> mAsyncStream;
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nsUint64 mStreamOffset;
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nsUint64 mStreamLength;
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PRUint32 mSegSize;
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PRUint32 mSegCount;
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nsresult mStatus;
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PRUint32 mSuspendCount;
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PRUint32 mLoadFlags;
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PRPackedBool mIsPending;
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PRPackedBool mWaiting; // true if waiting on async source
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PRPackedBool mCloseWhenDone;
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};
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#endif // !nsInputStreamChannel_h__
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