telephonyserverplugins/simatktsy/utility/src/ttlv.cpp
changeset 0 3553901f7fa8
child 19 630d2f34d719
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/telephonyserverplugins/simatktsy/utility/src/ttlv.cpp	Tue Feb 02 01:41:59 2010 +0200
@@ -0,0 +1,205 @@
+// Copyright (c) 2006-2009 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:
+// Name        : TTlv.cpp
+// Part of     : Series 60 / utility
+// Based on 3GPP TS 11.14 V8.8.0 
+// Version     : 1.0
+// EXTERNAL RESOURCES  
+//
+
+
+
+//  Include Files  
+#include "TTlv.h"				    // Header of this class
+#include "tflogger.h"				// For logging
+
+//  External Data Structures  
+//    none
+
+//  External Function Prototypes  
+//    none
+
+//  LOCAL CONSTANTS AND MACROS  
+//    none
+
+//  MODULE DATA STRUCTURES  
+//    none
+
+//  Local Data Structures  
+//    none
+
+//  Local Function Prototypes  
+//    none
+
+//  LOCAL FUNCTIONS
+//    none
+
+//  MEMBER FUNCTIONS
+
+
+//=============================================================================
+
+
+
+// -----------------------------------------------------------------------------
+// TTlvBase::TTlvBase
+// constructor
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TTlvBase::TTlvBase
+        ( 
+        TDes8& aData
+        ) : iData(aData)
+    {
+    // Do nothing.
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::Begin
+// Start BER-TLV construction
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void TTlvBase::Begin
+        ( 
+        TUint8 aTag 
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::Begin"); 
+    iData.Zero();
+    iData.Append( aTag );
+    iData.Append( 0 );
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::AddTag
+// Start new simple TLV
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void TTlvBase::AddTag
+        ( 
+        TUint8 aTag 
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::AddTag");
+    iData.Append( aTag );           // tag
+    iData.Append( 0 );              // length
+    iLenIndex = iData.Length() - 1; // index to tag length
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::AddByte
+// Add byte data to simple TLV
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void TTlvBase::AddByte
+        ( 
+        TUint8 aValue  
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::AddByte");
+    iData.Append( aValue );
+    iData[iLenIndex]++;
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::AddData
+// Add desctiptor data to simple TLV
+// -----------------------------------------------------------------------------
+//
+EXPORT_C void TTlvBase::AddData
+        ( 
+        const TDesC8& aValue 
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::AddData");
+    iData.Append( aValue );
+    iData[ iLenIndex ] = static_cast<TUint8>( iData[ iLenIndex ] + 
+        aValue.Length() );
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::End
+// End BER-TLV construction. Adds extra length byte to all simple TLVs that 
+// are longer than KMaxOneByteLength (0x7f) and returns descriptor to the new 
+// valid BER-TLV.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C const TDesC8& TTlvBase::End
+        (
+        // None
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::End");
+    _LIT8( KLenTag, "\x81" );
+
+    TInt i( 3 ); // Index to tag length
+
+    // Scan through all lenghts and insert 'length tag'
+    while ( i < iData.Length() )
+        {
+        if ( iData[i] > KMaxOneByteLength )
+            {
+            iData.Insert( i, KLenTag );
+            i++;
+            }
+        i += iData[i] + 2; // jump to next tag length
+        }
+
+    // Calculate total BER-TLV length
+    iData[1] = static_cast<TUint8>( iData.Length() - 2 );
+    // Insert 'length tag'
+    if ( iData[1] > KMaxOneByteLength )
+        {
+        iData.Insert( 1, KLenTag );
+        }
+
+    // Done, return BER-TLV
+    return iData;
+    }
+
+// -----------------------------------------------------------------------------
+// TTlvBase::GetDataWithoutTopLevelTag
+// End TLV construction. Adds extra length byte to all simple TLVs that are 
+// longer than KMaxOneByteLength (0x7f) and returns descriptor to the valid 
+// TLVs. To be used without Begin(), nor End() in situations where TLV simple 
+// tags are used without top level tag.
+// -----------------------------------------------------------------------------
+//
+EXPORT_C const TDesC8& TTlvBase::GetDataWithoutTopLevelTag
+        (
+        // None
+        )
+    {
+    TFLOGSTRING("UTILITY: TTlvBase::GetDataWithoutTopLevelTag");
+    _LIT8( KLenTag, "\x81" );
+
+    TInt i( 1 ); // Index to tag length
+
+    // Scan through all lenghts and insert 'length tag'
+    while ( i < iData.Length() )
+        {
+        if ( iData[i] > KMaxOneByteLength )
+            {
+            iData.Insert( i, KLenTag );
+            i++;
+            }
+        i += iData[i] + 2; // Jump to next tag length
+        }
+
+    // Done, return BER-TLV
+    return iData;
+
+    }
+
+//End Of File