LCOV - app.info - netwerk/base/src/nsBufferedStreams.h

LCOV - code coverage report
| Current view: | directory - netwerk/base/src - nsBufferedStreams.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 10 | 10 | 100.0 %
| Date: | 2012-04-21 | Functions: | 10 | 10 | 100.0 %

           1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
           2                 : /* ***** BEGIN LICENSE BLOCK *****
           3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           4                 :  *
           5                 :  * The contents of this file are subject to the Mozilla Public License Version
           6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           7                 :  * the License. You may obtain a copy of the License at
           8                 :  * http://www.mozilla.org/MPL/
           9                 :  *
          10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          12                 :  * for the specific language governing rights and limitations under the
          13                 :  * License.
          14                 :  *
          15                 :  * The Original Code is mozilla.org code.
          16                 :  *
          17                 :  * The Initial Developer of the Original Code is
          18                 :  * Netscape Communications Corporation.
          19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
          20                 :  * the Initial Developer. All Rights Reserved.
          21                 :  *
          22                 :  * Contributor(s):
          23                 :  *
          24                 :  * Alternatively, the contents of this file may be used under the terms of
          25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          28                 :  * of those above. If you wish to allow use of your version of this file only
          29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          30                 :  * use your version of this file under the terms of the MPL, indicate your
          31                 :  * decision by deleting the provisions above and replace them with the notice
          32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          33                 :  * the provisions above, a recipient may use your version of this file under
          34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          35                 :  *
          36                 :  * ***** END LICENSE BLOCK ***** */
          37                 :
          38                 : #ifndef nsBufferedStreams_h__
          39                 : #define nsBufferedStreams_h__
          40                 :
          41                 : #include "nsIBufferedStreams.h"
          42                 : #include "nsIInputStream.h"
          43                 : #include "nsIOutputStream.h"
          44                 : #include "nsISafeOutputStream.h"
          45                 : #include "nsISeekableStream.h"
          46                 : #include "nsIStreamBufferAccess.h"
          47                 : #include "nsCOMPtr.h"
          48                 : #include "nsIIPCSerializable.h"
          49                 :
          50                 : ////////////////////////////////////////////////////////////////////////////////
          51                 :
          52                 : class nsBufferedStream : public nsISeekableStream
          53                 : {
          54                 : public:
          55                 :     NS_DECL_ISUPPORTS
          56                 :     NS_DECL_NSISEEKABLESTREAM
          57                 :
          58                 :     nsBufferedStream();
          59                 :     virtual ~nsBufferedStream();
          60                 :
          61                 :     nsresult Close();
          62                 :
          63                 : protected:
          64                 :     nsresult Init(nsISupports* stream, PRUint32 bufferSize);
          65                 :     NS_IMETHOD Fill() = 0;
          66                 :     NS_IMETHOD Flush() = 0;
          67                 :
          68                 :     PRUint32                    mBufferSize;
          69                 :     char*                       mBuffer;
          70                 :
          71                 :     // mBufferStartOffset is the offset relative to the start of mStream.
          72                 :     PRInt64                     mBufferStartOffset;
          73                 :
          74                 :     // mCursor is the read cursor for input streams, or write cursor for
          75                 :     // output streams, and is relative to mBufferStartOffset.
          76                 :     PRUint32                    mCursor;
          77                 :
          78                 :     // mFillPoint is the amount available in the buffer for input streams,
          79                 :     // or the high watermark of bytes written into the buffer, and therefore
          80                 :     // is relative to mBufferStartOffset.
          81                 :     PRUint32                    mFillPoint;
          82                 :
          83                 :     nsISupports*                mStream;        // cast to appropriate subclass
          84                 :
          85                 :     bool                        mBufferDisabled;
          86                 :     bool                        mEOF;  // True if mStream is at EOF
          87                 :     PRUint8                     mGetBufferCount;
          88                 : };
          89                 :
          90                 : ////////////////////////////////////////////////////////////////////////////////
          91                 :
          92                 : class nsBufferedInputStream : public nsBufferedStream,
          93                 :                               public nsIBufferedInputStream,
          94                 :                               public nsIStreamBufferAccess,
          95                 :                               public nsIIPCSerializable
          96                 : {
          97                 : public:
          98                 :     NS_DECL_ISUPPORTS_INHERITED
          99                 :     NS_DECL_NSIINPUTSTREAM
         100                 :     NS_DECL_NSIBUFFEREDINPUTSTREAM
         101                 :     NS_DECL_NSISTREAMBUFFERACCESS
         102                 :     NS_DECL_NSIIPCSERIALIZABLE
         103                 :
         104            2868 :     nsBufferedInputStream() : nsBufferedStream() {}
         105           11472 :     virtual ~nsBufferedInputStream() {}
         106                 :
         107                 :     static nsresult
         108                 :     Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
         109                 :
         110            9845 :     nsIInputStream* Source() {
         111            9845 :         return (nsIInputStream*)mStream;
         112                 :     }
         113                 :
         114                 : protected:
         115                 :     NS_IMETHOD Fill();
         116             400 :     NS_IMETHOD Flush() { return NS_OK; } // no-op for input streams
         117                 : };
         118                 :
         119                 : ////////////////////////////////////////////////////////////////////////////////
         120                 :
         121                 : class nsBufferedOutputStream : public nsBufferedStream,
         122                 :                                public nsISafeOutputStream,
         123                 :                                public nsIBufferedOutputStream,
         124                 :                                public nsIStreamBufferAccess
         125                 : {
         126                 : public:
         127                 :     NS_DECL_ISUPPORTS_INHERITED
         128                 :     NS_DECL_NSIOUTPUTSTREAM
         129                 :     NS_DECL_NSISAFEOUTPUTSTREAM
         130                 :     NS_DECL_NSIBUFFEREDOUTPUTSTREAM
         131                 :     NS_DECL_NSISTREAMBUFFERACCESS
         132                 :
         133            1142 :     nsBufferedOutputStream() : nsBufferedStream() {}
         134            4568 :     virtual ~nsBufferedOutputStream() { nsBufferedOutputStream::Close(); }
         135                 :
         136                 :     static nsresult
         137                 :     Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
         138                 :
         139            9959 :     nsIOutputStream* Sink() {
         140            9959 :         return (nsIOutputStream*)mStream;
         141                 :     }
         142                 :
         143                 : protected:
         144            5485 :     NS_IMETHOD Fill() { return NS_OK; } // no-op for input streams
         145                 :
         146                 :     nsCOMPtr<nsISafeOutputStream> mSafeStream; // QI'd from mStream
         147                 : };
         148                 :
         149                 : ////////////////////////////////////////////////////////////////////////////////
         150                 :
         151                 : #endif // nsBufferedStreams_h__

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