/*

* Copyright (c) 2007 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:  Interface for quering system version information.

*

*/

//  INCLUDES

#include <e32std.h>

#include <f32file.h>

#include "versioninfo.h"

#include "platformverdebug.h"

// CONSTANTS

_LIT( KS60ProductIDFiles, "z:\\system\\install\\series60v*.sis" );

const TInt KS60ProductIDPos = 9; // Length of 'series60v'

_LIT( KS60ProductIDSplitMark, "." ); // For splitting 'XX.YY' to 'XX' and 'YY'

// ============================= LOCAL FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// GetPlatformVersion

// -----------------------------------------------------------------------------

//

static TInt GetPlatformVersion(

        VersionInfo::TPlatformVersion& aVersion,

        RFs& aFs )

    {

    FUNC_LOG

    CDir* productIds = NULL;

    TFindFile find( aFs );

    TInt ret( find.FindWildByPath( KS60ProductIDFiles, NULL, productIds ) );

    if ( ret == KErrNone && productIds )

        {

        ret = productIds->Sort( ESortByName | EDescending );

        }

    TPtrC ptr;

    TInt splitPos( KErrNotFound );

    if ( ret == KErrNone && productIds )

        {

        // Get version string 'XX.YY'

        TParsePtrC parse( ( *productIds )[ 0 ].iName );

        ptr.Set( parse.Name().Mid( KS60ProductIDPos ) );

        splitPos = ptr.Find( KS60ProductIDSplitMark );

        }

    if ( splitPos != KErrNotFound )

        {

        // Get major version

        TLex lex( ptr.Left( splitPos ) );

        ret = lex.Val( aVersion.iMajorVersion, EDecimal );

        if ( ret == KErrNone )

            {

            // Get minor version

            lex.Assign( ptr.Mid(

                splitPos + KS60ProductIDSplitMark().Length() ) );

            ret = lex.Val( aVersion.iMinorVersion, EDecimal );

            }

        }

    if ( !productIds || splitPos == KErrNotFound || ret == KErrNotFound ||

        ret == KErrPathNotFound )

        {

        ret = KErrNotSupported; // Use not supported if info is unavailable

        }

    delete productIds;

    return ret;

    }

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// VersionInfo::GetVersion

// -----------------------------------------------------------------------------

EXPORT_C TInt VersionInfo::GetVersion( TVersionBase& aVersion )

    {

    FUNC_LOG_WITH_CLIENT_NAME

    RFs fs;

    TInt ret( fs.Connect() );

    if ( ret == KErrNone )

        {

        ret = GetVersion( aVersion, fs );

        fs.Close();

        }

    LOG_IF_ERROR2(

        ret,

        "VersionInfo::GetVersion-aType=%d,ret=%d",

        aVersion.iType, ret )

    return ret;

    }

// -----------------------------------------------------------------------------

// VersionInfo::GetVersion

// -----------------------------------------------------------------------------

EXPORT_C TInt VersionInfo::GetVersion( TVersionBase& aVersion, RFs& aFs )

    {

    FUNC_LOG_WITH_CLIENT_NAME

    // Make sure that trap handler exists because used APIs may 

    // require cleanup stack even any leaving methods are not called.

    CTrapCleanup* cs = NULL;

    if ( !User::TrapHandler() )

        {

        // Setup temporary trap handler

        cs = CTrapCleanup::New();

        if ( !cs )

            {

            ERROR_LOG2(

                "VersionInfo::GetVersion-type=%d,ret=%d",

                aVersion.iType, KErrNoMemory )

            return KErrNoMemory;

            }

        }

    TInt ret( KErrNotSupported );

    switch( aVersion.iType )

        {

        case EPlatformVersion:

            {

            ret = GetPlatformVersion(

                static_cast< TPlatformVersion& >( aVersion ), aFs );

            break;

            }

        default:

            {

            break;

            }

        }

    if ( cs )

        {

        // Remove temporary trap handler

        User::SetTrapHandler( NULL );

        delete cs;

        }

    LOG_IF_ERROR2( ret,

        "VersionInfo::GetVersion-type=%d,ret=%d",

        aVersion.iType, ret )

    return ret;

    }

//  End of File