--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysstatemgmt/syslangutil/src/syslangutil.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,353 @@
+/*
+* Copyright (c) 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:  Implementation of SysLangUtil class.
+*
+*/
+
+
+#include <s32file.h>
+#include <centralrepository.h>
+
+#include "syslangutil.h"
+#include "syslangutiltrace.h"
+#include "ssmmapperutilitystatic.h"
+#include "syslangutilprivatecrkeys.h"
+
+const TInt KReadBufSize = 10;
+const TInt KLangArraySize = 20;
+
+// R&D support: Use language file in Starters internal directory for module
+// testing purposes.
+#ifdef __STARTER_MODULE_TEST_SUPPORT__
+  _LIT( KLanguagesIni, "C:\\private\\100059C9\\languages.txt" );
+#else // __STARTER_MODULE_TEST_SUPPORT__
+  _LIT( KLanguagesIni, "z:\\resource\\bootdata\\languages.txt" );
+#endif // __STARTER_MODULE_TEST_SUPPORT__
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// -----------------------------------------------------------------------------
+// SysLangUtil::IsValidLanguage
+//
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TBool SysLangUtil::IsValidLanguage(
+    const TInt& aLanguage,
+    RFs* aFileServerSession )
+    {
+    API_FUNC_ENTRY_TRACE;
+
+    TBool hadFS;
+    TInt err;
+    aFileServerSession = CheckFS( aFileServerSession, hadFS, err );
+
+    if ( err )
+        {
+        return EFalse;
+        }
+
+    RFile file;
+    err = file.Open(
+        *aFileServerSession,
+        KLanguagesIni,
+        EFileStream | EFileRead | EFileShareReadersOnly );
+
+    if ( !err )
+        {
+        // Prepare Reader
+        TFileText reader;
+        reader.Set(file);
+        if ( reader.Seek(ESeekStart) )
+            {
+            file.Close();
+            if ( !hadFS )
+                {
+                aFileServerSession->Close();
+                delete aFileServerSession;
+                aFileServerSession = NULL;
+                }
+            return EFalse;
+            }
+
+        TBuf<KReadBufSize> readBuf;
+        err = EFalse; // This solution is not very elegant but saves ROM :)
+
+        while ( !reader.Read( readBuf ) && readBuf.Length() )
+            {
+            if ( readBuf.Length() > 1 )
+                {
+                TLex lex( readBuf );
+                lex.SkipSpace();
+                TInt language;
+                err = lex.Val( language );
+
+                if ( language == aLanguage )
+                    {
+                     err = ETrue;
+                     break;
+                    }
+                }
+            }
+        file.Close();
+        }
+    else
+        {
+        err = EFalse;
+        ERROR_TRACE_1( "ERROR: file '%S' is missing", &KLanguagesIni );
+        }
+
+    if ( !hadFS )
+        {
+        aFileServerSession->Close();
+        delete aFileServerSession;
+        aFileServerSession = NULL;
+        }
+
+    FUNC_EXIT_RET_TRACE( err );
+    return err;
+    }
+
+
+// -----------------------------------------------------------------------------
+// SysLangUtil::GetDefaultLanguage
+//
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt SysLangUtil::GetDefaultLanguage(
+    TInt& aLanguage,
+    RFs* aFileServerSession )
+    {
+    API_FUNC_ENTRY_TRACE;
+
+    TBool hadFS;
+    TInt err;
+    aFileServerSession = CheckFS( aFileServerSession, hadFS, err );
+
+    if ( err )
+        {
+        return err;
+        }
+
+    RFile file;
+    err = file.Open(
+        *aFileServerSession,
+        KLanguagesIni,
+        EFileStream | EFileRead | EFileShareReadersOnly );
+
+    if ( !err )
+        {
+        // Prepare Reader
+        TFileText reader;
+        reader.Set(file);
+        err = reader.Seek( ESeekStart );
+        if ( !err )
+            {
+            TBuf<KReadBufSize> readBuf;
+
+            while ( !reader.Read( readBuf ) && readBuf.Length() )
+                {
+                if ( readBuf.Locate('d') != KErrNotFound )
+                   {
+                        TLex lex( readBuf );
+                        lex.SkipSpace();
+                        err = lex.Val( aLanguage );
+                        break;
+                   }
+
+                readBuf.Zero();
+                }
+
+            if ( !readBuf.Length() )
+                {
+                ERROR_TRACE_1( "ERROR: file '%S' is missing", &KLanguagesIni );
+                file.Close();
+                return KErrNotFound;
+                }
+            }
+        file.Close();
+        }
+
+    if ( !hadFS )
+        {
+        aFileServerSession->Close();
+        delete aFileServerSession;
+        aFileServerSession = NULL;
+        }
+
+    FUNC_EXIT_RET_TRACE( err );
+    return err;
+    }
+
+
+// -----------------------------------------------------------------------------
+// SysLangUtil::GetInstalledLanguages
+//
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt SysLangUtil::GetInstalledLanguages(
+    CArrayFixFlat<TInt>*& aLanguages,
+    RFs* aFileServerSession )
+    {
+    API_FUNC_ENTRY_TRACE;
+
+    if ( aLanguages )
+        {
+        delete aLanguages;
+        }
+
+    aLanguages = new CArrayFixFlat<TInt>( KLangArraySize );
+
+    if ( !aLanguages )
+        {
+        return KErrNoMemory;
+        }
+
+
+    TBool hadFS;
+    TInt err;
+    aFileServerSession = CheckFS( aFileServerSession, hadFS, err );
+
+    if ( err )
+        {
+        return err;
+        }
+
+    RFile file;
+    err = file.Open(
+        *aFileServerSession,
+        KLanguagesIni,
+        EFileStream | EFileRead | EFileShareReadersOnly );
+    if ( !err )
+        {
+        // Prepare Reader
+        TFileText reader;
+        reader.Set( file );
+        err = reader.Seek( ESeekStart );
+        if ( !err )
+            {
+            TBuf<KReadBufSize> readBuf;
+
+            for ( TInt i = 0; !reader.Read( readBuf ) && readBuf.Length(); i++ )
+                {
+                if ( readBuf.Length() > 0 )
+                    {
+                    TLex lex( readBuf );
+                    lex.SkipSpace();
+                    TInt language;
+                    err = lex.Val( language );
+                    if ( err ) break;
+                    // Will not leave if array size (KLangArraySize) not exceeded
+                    TRAP( err, aLanguages->AppendL( language ) );
+                    err = KErrNone; // Ignore.
+                    }
+                readBuf.Zero();
+                }
+            }
+        file.Close();
+        }
+    else
+        {
+        ERROR_TRACE_1( "ERROR: file '%S' is missing", &KLanguagesIni );
+        }
+
+    if ( !hadFS )
+        {
+        aFileServerSession->Close();
+        delete aFileServerSession;
+        aFileServerSession = NULL;
+        }
+
+    FUNC_EXIT_RET_TRACE( err );
+    return err;
+    }
+
+
+// -----------------------------------------------------------------------------
+// SysLangUtil::RestoreSIMLanguage
+//
+// -----------------------------------------------------------------------------
+//
+EXPORT_C TInt SysLangUtil::RestoreSIMLanguage(
+    TInt &aLanguage,
+    RFs* /*aFileServerSession*/ )
+    {
+    API_FUNC_ENTRY_TRACE;
+    
+    TUid mappedUid = SsmMapperUtility::CrUid( KCRUidSysLangUtil );
+
+    CRepository* repository = NULL;
+    TRAPD( errorCode, repository = CRepository::NewL( mappedUid ) );
+
+    if ( errorCode == KErrNone )
+        {
+        errorCode = repository->Get( KSysLangUtilSimLanguage, aLanguage );
+
+        if ( errorCode != KErrNone )
+            {
+            ERROR_TRACE_1( "Failed to get value from CentRep, error code %d.", errorCode );
+            }
+        }
+    else
+        {
+        ERROR_TRACE_1( "Failed to open repository, error code %d.", errorCode );
+        }
+
+    delete repository;
+
+    FUNC_EXIT_RET_TRACE( errorCode );
+    return errorCode;
+    }
+
+
+// -----------------------------------------------------------------------------
+// SysLangUtil::CheckFS
+//
+// -----------------------------------------------------------------------------
+//
+RFs* SysLangUtil::CheckFS( RFs* aRFs, TBool& aExist, TInt& aErr )
+    {
+    FUNC_ENTRY_TRACE;
+
+    if ( !aRFs )
+        {
+        aExist = EFalse;
+        aRFs = new RFs;
+        if ( aRFs )
+            {
+            aErr = aRFs->Connect();
+            if ( aErr != KErrNone)
+                {
+                delete aRFs;
+                return NULL;
+                }
+            }
+        else
+            {
+            aErr = KErrNoMemory;
+            return NULL;
+            }
+        }
+    else
+        {
+        // File server session given as argument MUST be already connected
+        ASSERT_TRACE( aRFs->Handle() );
+
+        aExist = ETrue;
+        }
+
+    aErr = KErrNone;
+
+    FUNC_EXIT_TRACE;
+    return aRFs;
+    }