diff -r 12f60d9a73b3 -r cbffe13eac63 csxhelp/HelpEngine/inc/CSXHRuntimeIndexing.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/csxhelp/HelpEngine/inc/CSXHRuntimeIndexing.h	Wed Sep 01 12:30:56 2010 +0100
@@ -0,0 +1,160 @@
+/*
+* 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 is a utility class that provides functionality
+*                for scanning app help folder, generate index XML
+*                at runtime, and also update it if any install/uninstall        
+*
+*/
+
+#ifndef CSXHRUNTIMEINDEXING_H
+#define CSXHRUNTIMEINDEXING_H
+
+// INCLUDES
+#include <e32base.h>
+#include <f32file.h>
+
+// CONSTANTS
+// the help content folder doesn't exist
+const TInt KNoDirExist = -3;
+// there is no changes in help content folder (like install/uninstall)
+const TInt KNoChange = -2;
+// there is no index.xml file (due to no help content at previous time)
+const TInt KNoIndexExist = -1;
+
+// FORWARD CLASS DECLARATION
+class CCSXHHtmlTOC1;
+class CCSXHKywdTOC1;
+class CCoeEnv;
+
+/*
+ * runtime indexing handling class
+ * responsible for generating index file, maintaining it.
+ * this class also create CS X Help private folder if not exist
+ * 
+ */
+class CCSXHRuntimeIndexing : public CBase
+    {
+public:
+
+    /*
+     * constructor
+     */
+    CCSXHRuntimeIndexing();
+    /*
+    
+     * destructor
+     */
+    ~CCSXHRuntimeIndexing();
+    
+    /*
+     * Two-phase constructor
+     */
+    static CCSXHRuntimeIndexing* NewL();
+    
+    /*
+     * Generate the master index file content
+     * @param aToc1: TOC1 object which contains main topic information
+     * @param aFeature: Feature information, supported by Feature Mgr
+     */
+    void RuntimeGenerateIndexL( const CCSXHHtmlTOC1& aToc1, const TDesC& aFeature );
+    
+    /*
+     * Check whether master index exist
+     * Since Z based helps must exist
+     * Usage: to determine Help was launched before
+     */
+    TBool IndexFileExistsL();
+    
+    /*
+     * create temporary index file
+     * this file will be saved to C:\\private\\<help-uid>\\<aDrive>\\<lang-id>\\
+     * @param: aDrive Drive information
+     */
+    void BeginIndexFileL( const TChar& aDrive );
+    
+    /*
+     * close the temporary index file, and rename it to index.xml formally
+     * tmp.xml -> index.xml
+     * this function can backup index.xml, once exception happens
+     */
+    void FinishAndCloseIndexFileL();
+    
+    /*
+     * Get help application private path in C drive
+     * @param aName[out] return help app private path in C
+     */
+    void GetPrivatePath( TDes& aName );
+    
+    /*
+     * Get proper locale, and append it to descriptor
+     * for more information about proper locale
+     *   please refer to BaflUtils::GetDowngradePathL
+     * @param aDir[out] append proper locale
+     */
+    void AppendLocaleL( TDes& aDir );
+    
+    /*
+     * Delete master index file, particular in C: or E: or F: (user disk)
+     * this will only occur when user remove all custom helps, no more helps folder
+     *   in this case, custom index mustn't exist.
+     * @param aDrive the file to be deleted
+     */
+    void DeleteIndexFileL( const TChar& aDrive );
+    
+    /*
+     * Check if helps folder changed
+     * changes include: 
+     *        A: install new application
+     *        B: uninstall (if unistall all helps, custom helps folder will also removed)
+     *        C: user changed the language
+     *        D: user restored the cell phone
+     * @param aName[out] return help app private path in C
+     */
+    TInt CheckDirChangeL( const TChar& aDrive );
+    
+private:
+
+    /*
+     * two-phase constructor, private
+     */
+    void ConstructL();
+    
+private:
+
+    /*
+     * buff current index file name
+     * owned
+     */
+    HBufC* iFullDirName;
+    
+    /*
+     * CoeEnv
+     * not owned
+     */
+    CCoeEnv * iCoeEnv;
+    
+    /*
+     * current index file handle
+     */
+    RFile iFile;
+    
+    /*
+     * actually it's iFullDirName's drive letter
+     * for more convenient, keep it as a class member
+     */
+    TChar iDriveLetter;
+    
+    };
+    
+#endif // CSXHRUNTIMEINDEXING_H
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