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/*
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* Copyright (c) 2002-2005 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Implementation for XCFWLocalizer
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*
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*/
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// INCLUDE FILES
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#include "xcfwlocalizer.h"
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#include <bautils.h>
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#include <e32std.h>
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#include <badesca.h>
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#include <s32file.h>
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#include <s32strm.h>
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#include <utf.h>
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#include <pathinfo.h>
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// CONSTANTS
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_LIT8( KEntityStart, "!ENTITY " );
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_LIT( KDrivePathChars, ":\\" );
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const TInt KDefaultGranularity = 10;
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//Maximum entity declaration length is rather long because
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//in RND builds the DTD files contain a lot of comments
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//and parsing the file requires long enough buffer.
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const TInt KMaxEntityDeclLen = 1024;
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const TInt KPathStartLoc = 2;
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::CXCFWLocalizer
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CXCFWLocalizer::CXCFWLocalizer()
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{
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CXCFWLocalizer::ConstructL()
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{
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iReferences = new ( ELeave ) CDesCArraySeg( KDefaultGranularity );
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iLocStrings = new ( ELeave ) CDesCArraySeg( KDefaultGranularity );
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::NewL
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// Two-phased constructor with Node Data initializer.
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// -----------------------------------------------------------------------------
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//
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CXCFWLocalizer* CXCFWLocalizer::NewL()
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{
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CXCFWLocalizer* self = new( ELeave ) CXCFWLocalizer;
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CleanupStack::PushL( self );
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self->ConstructL();
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CleanupStack::Pop( self );
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return self;
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}
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// Destructor
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CXCFWLocalizer::~CXCFWLocalizer()
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{
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delete iReferences;
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delete iLocStrings;
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::LoadDTDL
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// Load entity references from DTD file
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// Function searches the DTD file first from session path (which is where
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// the loaded XML file is located). If it is not found there, it is sought
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// from ROM drive at the same location.
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// If function can't find loc file for current language, it will search the
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// possible replacement using language downgrade path.
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// -----------------------------------------------------------------------------
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//
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void CXCFWLocalizer::LoadDTDL(
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const TDesC& aDTD,
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RFs& aFileSystem,
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TRequestStatus* aStatus )
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{
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const TInt KMaxLangCodeLen = 5;
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const TInt KMinLangCodeLen = 2;
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TBuf<KMaxLangCodeLen> lcstring;
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delete iLocStrings;
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iLocStrings = NULL;
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delete iReferences;
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iLocStrings = NULL;
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iReferences = new ( ELeave ) CDesCArraySeg( KDefaultGranularity );
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iLocStrings = new ( ELeave ) CDesCArraySeg( KDefaultGranularity );
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iStatus = aStatus;
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//First get filepath without drive character
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TPtrC filepath;
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if ( aDTD.Find( KDrivePathChars ) != KErrNotFound )
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{
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filepath.Set( aDTD.Mid( KPathStartLoc ) );
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}
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else
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{
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filepath.Set( aDTD );
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}
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// format filepath with current language data
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TLanguage langcode = User::Language(); //current language
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lcstring.Num( (TInt64)langcode ); //to get decimal langcode length in characters
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//use always at least 2 digits.
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TInt codelen = lcstring.Length() > 1 ? lcstring.Length() : KMinLangCodeLen;
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HBufC* locfile = HBufC::NewL( aDTD.Length() + KMaxLangCodeLen );
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CleanupStack::PushL( locfile );
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locfile->Des().Format( filepath, codelen, langcode );
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//Check for file, if not found, check language downgrade path
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if( !BaflUtils::FileExists( aFileSystem, locfile->Des() ) )
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{
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RArray<TLanguage> langs;
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BaflUtils::GetDowngradePathL( aFileSystem, langcode, langs );
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//add current language to array for ROM fetching
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langs.Append( langcode );
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TInt current = langs.Count() - 1;
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do
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{
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lcstring.Num( (TInt64)langs[current] );
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codelen = lcstring.Length()>1?lcstring.Length():KMinLangCodeLen;
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locfile->Des().Format( filepath, codelen, langs[current] );
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current--;
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}
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while ( current >= 0 &&
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!BaflUtils::FileExists( aFileSystem, locfile->Des() ) );
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//If still not found, check from ROM
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if ( !BaflUtils::FileExists( aFileSystem, locfile->Des() ) )
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{
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current = langs.Count() - 1;
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do {
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lcstring.Num( (TInt64)langs[current] );
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codelen = lcstring.Length()>1?lcstring.Length():KMinLangCodeLen;
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locfile->Des().Format( filepath, codelen, langs[current] );
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locfile->Des().Insert( 0, PathInfo::RomRootPath().Left( KPathStartLoc ) );
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current--;
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} while ( current >= 0 &&
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!BaflUtils::FileExists( aFileSystem, locfile->Des() ) );
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}
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langs.Reset();
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langs.Close();
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}
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if ( BaflUtils::FileExists( aFileSystem, locfile->Des() ) )
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{
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RFile infile;
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User::LeaveIfError( infile.Open(aFileSystem, locfile->Des(), EFileRead) );
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CleanupClosePushL( infile );
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RFileReadStream readStream( infile,0 );
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CleanupClosePushL( readStream );
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ParseDTDL( readStream );
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CleanupStack::Pop( &readStream ); //readStream
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CleanupStack::Pop( &infile ); //infile
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}
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CleanupStack::PopAndDestroy( locfile );
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*aStatus = KRequestPending;
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User::RequestComplete( aStatus, KErrNone );
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::LoadDTDL
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// Parse DTD file. Function assumes that the DTD contains ENTITY declarations
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// only.
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// -----------------------------------------------------------------------------
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//
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void CXCFWLocalizer::ParseDTDL( RFileReadStream& aStream )
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{
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TChar space = ' ';
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TChar quote = '"';
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TChar lessthan = '<';
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TChar morethan = '>';
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HBufC8* buf = HBufC8::NewLC( KMaxEntityDeclLen );
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TPtr8 p( buf->Des() );
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TInt streamError = KErrNone;
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do
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{
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// Read until declaration start "<"
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TRAP( streamError, aStream.ReadL( p , lessthan));
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// This might be EOF, or other problem, we exit
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if( streamError != KErrNone )
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{
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aStream.Close();
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}
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else
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{
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aStream.ReadL( p , space); // Read until space " "
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// entity declaration handled, others are ignored
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if ( p.CompareC( KEntityStart ) == 0 )
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{
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p.Zero();
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aStream.ReadL( p , space); // Read the reference name
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p.TrimRight(); // Delete space from the end
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HBufC* ucsbuf = HBufC::NewLC( p.Length() );
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TPtr ucsp( ucsbuf->Des() );
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CnvUtfConverter::ConvertToUnicodeFromUtf8( ucsp, p );
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iReferences->AppendL( ucsp );
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CleanupStack::PopAndDestroy( ucsbuf );
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p.Zero();
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aStream.ReadL( p , quote);
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p.Zero();
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aStream.ReadL( p , quote);
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p.SetLength(p.Length() - 1); // Delete quotation from the end
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//Seek for percentage char symbol and do necessary conversion
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const TInt KUCEntityLen = 8;
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_LIT8( KUniCodeChar, "%");
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_LIT8( KPctage, "%" );
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TInt pct = p.Find( KUniCodeChar );
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while ( pct != KErrNotFound )
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{
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HBufC8* tmp = HBufC8::NewLC( KMaxEntityDeclLen );
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tmp->Des().Copy ( p.Left( pct ) );
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tmp->Des().Append( KPctage );
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tmp->Des().Append( p.Mid( pct + KUCEntityLen ) );
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p.Copy ( tmp->Des() );
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CleanupStack::PopAndDestroy( tmp );
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pct = p.Find( KUniCodeChar );
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}
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ucsbuf = HBufC::NewLC( p.Length() );
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ucsp.Set ( ucsbuf->Des() );
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CnvUtfConverter::ConvertToUnicodeFromUtf8( ucsp, p );
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iLocStrings->AppendL( ucsp );
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CleanupStack::PopAndDestroy( ucsbuf );
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p.Zero();
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aStream.ReadL( p , morethan); // Read until declaration ends ">"
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}
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}
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} while ( streamError == KErrNone );
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CleanupStack::PopAndDestroy(buf);
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::EntityRefToText
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// Gets localized text value for given entity reference
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// -----------------------------------------------------------------------------
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//
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TInt CXCFWLocalizer::EntityRefToText(
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TDesC& aRef,
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TPtrC& aText)
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{
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TInt count = iReferences->Count();
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TInt ret = KErrNotFound;
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for ( TInt i = 0; i < count && ret == KErrNotFound; i++ )
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{
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if ( iReferences->MdcaPoint( i ).Compare(
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aRef.Mid(1, aRef.Length()-2) ) == 0 )
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{
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ret = KErrNone;
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aText.Set( iLocStrings->MdcaPoint( i ) );
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}
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}
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return ret;
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::TextToEntityRef
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// Gets entity reference for given text
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// -----------------------------------------------------------------------------
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//
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TInt CXCFWLocalizer::TextToEntityRef(
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TDesC& aText,
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TPtrC& aRef )
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{
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TInt count = iLocStrings->Count();
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TInt ret = KErrNotFound;
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for ( TInt i = 0; i < count && ret == KErrNotFound; i++ )
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{
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if ( iLocStrings->MdcaPoint( i ).Compare( aText ) == 0 )
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{
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ret = KErrNone;
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aRef.Set( iReferences->MdcaPoint( i ) );
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}
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}
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return ret;
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}
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// -----------------------------------------------------------------------------
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// CXCFWLocalizer::LastError
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// Returns error code from the parser.
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// -----------------------------------------------------------------------------
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//
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TInt CXCFWLocalizer::LastError()
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{
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TInt ret = KErrNone;
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if ( !iReferences || !iLocStrings )
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{
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ret = KErrNotReady;
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}
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else
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{
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if ( iReferences->Count() != iLocStrings->Count() )
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{
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ret = KErrCorrupt;
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}
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}
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return ret;
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}
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// End of File
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