--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/upnp/upnpstack/dlnawebserver/inc/upnprangeheaderparser.h	Tue Feb 02 01:12:20 2010 +0200
@@ -0,0 +1,165 @@
+/** @file
+* Copyright (c) 2005-2006 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies  this distribution, and is available 
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  CUpnpRangeHeaderParser is a class used to range header prsing
+*
+*/
+
+
+#ifndef C_CUPNPRANGEHEADERPARSER_H
+#define C_CUPNPRANGEHEADERPARSER_H
+
+// INCLUDES
+
+#include <e32base.h>
+#include <in_sock.h>
+#include "upnpcons.h"
+#include "upnphttpservertransaction.h"
+
+class CUpnpHttpMessage;
+
+static const TInt KIntegerOccurance = 3;
+static const TInt KSlashSpaceAndMinusSize = 3;
+static const TInt KMaxIntegerInContentLength = 2;
+
+
+// CLASS DECLARATION
+
+NONSHARABLE_CLASS (CUpnpRangeHeaderParser) : public CBase
+    {
+    public:  // Constructors and destructor
+        
+        /**
+        * Two-phased constructor.
+        * 
+        * @param aHeaderBuffer should be leave safe
+        */
+        static CUpnpRangeHeaderParser* NewL( CUpnpHttpServerTransaction& aTransaction,
+                                              TInt& aStartPos, TInt& aEndPos );
+        static CUpnpRangeHeaderParser* NewLC( CUpnpHttpServerTransaction& aTransaction,
+                                                       TInt& aStartPos, TInt& aEndPos );
+        
+        /**
+        * Destructor.
+        */
+        virtual ~CUpnpRangeHeaderParser();
+
+    public: // New functions
+
+        /**
+        * Returns parsing status as HTTP error code (e.g. EHttpPartialContent, -EHttpBadRequest) if Range header exist or
+        * EHttpOk if doesn't
+        * If request is corrected and Range header exist all references passed into construction phase
+        * gots new value
+        */        
+        TInt ParseRangeL( CUpnpHttpMessage* aMsg, TInt aFileSize );
+ 
+    private:
+
+        /**
+        * C++ default constructor.
+        */
+
+        CUpnpRangeHeaderParser( CUpnpHttpServerTransaction &aTransaction,
+                                TInt& aStartPos, TInt& aEndPos );
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+
+        /**
+        * Checks syntax of Range header
+        * EHttpPartialContent if Range header exists and syntax is proper 
+        * EHttpOk if Range header doesn't exist
+        * -EHttpBadRequest if Range syntax is improper
+        */        
+        TInt CheckRangeHeaderSyntax( CUpnpHttpMessage* aMsg );
+        
+        /**
+        * Checks Range value
+        * EHttpPartialContent if values there are proper
+        * - HTTP error code if not
+        */        
+        TInt CheckRangeValues( TInt aFileSize );
+
+        /**
+        * Parses HTTP Range header, according to rules described in DLNA specyfication
+        *  and if header is correct, it returns first and last byte positions. If header
+        *  is not correct, those values are random and should not be used.
+        * @param aRangeHeader Range header.
+        * @param aStartPos reference which will be filled with first byte position.
+        * @param aEndPos reference which will be filled with last byte position or
+        *  with KErrNotFound if such position was not specified in the header which is correct.
+        * @return ETrue if header syntax is correct, EFalse if not.
+        **/
+        static TBool ParseRangeHeader( TDesC8& aRangeHeader, TInt& aStartPos, TInt& aEndPos );
+        
+        /**
+        * Appends Content-Length header to response
+        */        
+        void AppendContentLengthToResponseL( TInt aFileSize, TInt rangeStatus );
+        
+           
+        /**
+        * Appends Bytes header to response
+        */        
+        void AppendBytesToResponseL( TInt aFileSize );
+               
+               
+        /**
+        * Creates response for 206 Partial Content
+        */        
+        void CreatePartialContentResponseL( 
+            TInt aFileSize, TInt aHttpCode );
+        
+        /**
+        * Creates response for 204 No Content
+        */        
+        void CreateNoContentResponseL( TInt aFileSize, TInt aHttpCode  );
+
+        /**
+        * Checks number format
+        * Returns ETrue if aNumber is improper
+        */   
+        static TBool HasImproperChars( const TLex8& aNumber );
+        
+        /**
+        * Moves parser position to first not white space
+        */ 
+        static void MovePosition( const TDesC8& aString, TInt& aPos );
+        
+        /**
+        * Handles conversion exception
+        * Returns EFalse if error cannot be handled
+        */ 
+        static TBool HandleConversionException( TLex8& aNumber, TInt& aRangePos, TInt aError );
+        
+        /**
+        Members
+        */
+    private:
+        // Reference to response header, not owned
+    	CUpnpHttpServerTransaction &iTransaction;
+        // Reference to start position
+        TInt& iStartPos;
+        // Reference to end position
+        TInt& iEndPos; 
+        //size parsing buffer
+        TBuf8<KMaxIntegerInContentLength*KMaxIntegerLength> iSizeBuffer;
+
+    };
+
+
+#endif
+