locationtriggering/ltcontainer/src/lbttriggeridgenerator.cpp
changeset 0 667063e416a2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationtriggering/ltcontainer/src/lbttriggeridgenerator.cpp	Tue Feb 02 01:06:48 2010 +0200
@@ -0,0 +1,118 @@
+/*
+* Copyright (c) 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:  This header file describes the class that handles the storage
+*                of triggers in RAM Structures.
+*
+*/
+
+
+#include "lbttriggeridgenerator.h"
+
+_LIT(KLbtTriggerIdFile,"lbttriggeridgenerator.dat");
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// The Symbian 2 phase constructor
+// ---------------------------------------------------------------------------
+//
+CLbtTriggerIdGenerator* CLbtTriggerIdGenerator::NewL()
+    {
+    CLbtTriggerIdGenerator* self = new( ELeave ) CLbtTriggerIdGenerator;
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+    
+
+// ---------------------------------------------------------------------------
+// Destructor
+// ---------------------------------------------------------------------------
+//
+CLbtTriggerIdGenerator::~CLbtTriggerIdGenerator()
+    {
+    iFileHandle.Close();
+    iFileServer.Close();
+    }
+
+
+
+
+// ---------------------------------------------------------------------------
+// Constructor
+// ---------------------------------------------------------------------------
+//
+CLbtTriggerIdGenerator::CLbtTriggerIdGenerator()
+    {
+    // Nothing to do now
+    }
+
+void CLbtTriggerIdGenerator::SetTriggerId(TInt64 aId)
+	{
+	HBufC8* trigId = NULL;
+	TRAP_IGNORE(trigId=HBufC8::NewL(sizeof(TInt64)));
+	TPtr8 ptr=trigId->Des();
+	ptr.AppendNum(aId);
+	TInt pos = 0;
+	iFileHandle.Seek(ESeekStart,pos);
+	iFileHandle.Write(ptr);
+	delete trigId;
+	}
+
+TInt64 CLbtTriggerIdGenerator::GetTriggerId()
+	{
+	HBufC8* trigId = NULL;
+	TRAP_IGNORE(trigId=HBufC8::NewL(sizeof(TInt64)));
+	TPtr8 ptr=trigId->Des();	
+	TInt pos = 0;
+	iFileHandle.Seek(ESeekStart,pos);
+	iFileHandle.Read(ptr);
+	TLex8 lex(ptr);
+	TInt64 iD;
+	lex.Val(iD);
+	delete trigId;
+	return iD;	
+	}
+
+// ---------------------------------------------------------------------------
+// The 2nd phase Symbian Constructor
+// ---------------------------------------------------------------------------
+//
+void CLbtTriggerIdGenerator::ConstructL()
+    {
+	User::LeaveIfError(iFileServer.Connect());
+	 // Obtain the file path
+    TFileName trigIdFile;
+    iFileServer.SessionPath(trigIdFile);
+
+    // Create the  Directory ie the private directory of the process
+    iFileServer.MkDirAll(trigIdFile);
+    
+    // Generate the Db file
+    trigIdFile.Append(KLbtTriggerIdFile);
+	TInt createError=iFileHandle.Create(iFileServer,trigIdFile,EFileWrite);
+	if(createError==KErrAlreadyExists)
+	    {
+	    createError=iFileHandle.Open(iFileServer,trigIdFile,EFileWrite);
+	    }
+	else if(createError==KErrNone)
+	    {
+	    SetTriggerId(0);
+	    }
+    User::LeaveIfError(createError);	    
+    }
+
+// end of file
+