// Copyright (c) 2003-2009 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:
//
#include <apmrec.h>
#include <apmstd.h>
#include <f32file.h>
#include "RECWEB.H"
#ifdef __UI_FRAMEWORKS_V2__
#include <ecom/implementationproxy.h>
#endif //__UI_FRAMEWORKS_V2__
const TInt KMimeWebRecognizerValue=0x10001315;
const TUid KUidMimeWebRecognizer={KMimeWebRecognizerValue};
const TInt KWebNumMimeTypes=2;
const TInt KWebRecogniserBufferSize=2048;
_LIT8(KHtmlMimeType,"text/html");
_LIT8(KXmlMimeType,"text/xml");
CApaWebRecognizer::CApaWebRecognizer()
: CApaDataRecognizerType(KUidMimeWebRecognizer,CApaDataRecognizerType::ENormal)
// All these mime types have reasonable recognition
{
iCountDataTypes=KWebNumMimeTypes;
}
TUint CApaWebRecognizer::PreferredBufSize()
{
return KWebRecogniserBufferSize;
}
TDataType CApaWebRecognizer::SupportedDataTypeL(TInt aIndex) const
{
__ASSERT_DEBUG(aIndex>=0 && aIndex<KWebNumMimeTypes,User::Invariant());
switch (aIndex)
{
case 0:
return TDataType(KHtmlMimeType);
default:
return TDataType(KXmlMimeType);
}
}
void CApaWebRecognizer::DoRecognizeL(const TDesC& aName, const TDesC8& aBuffer)
{
iConfidence = ENotRecognized;
const TInt positionOfLastDot=aName.LocateReverse('.');
if (positionOfLastDot>=0)
{//check the extension
const TPtrC ext=aName.Mid(positionOfLastDot);
_LIT(KDotHtml,".html");
_LIT(KDotHtm,".htm");
_LIT(KDotShtml,".shtml");
_LIT(KDotShtm,".shtm");
_LIT(KDotXhtml,".xhtml");
_LIT(KDotXml,".xml");
if (ext.CompareF(KDotHtml)==0 || ext.CompareF(KDotHtm)==0
|| ext.CompareF(KDotShtml)==0 || ext.CompareF(KDotShtm)==0
|| ext.CompareF(KDotXhtml)==0)
{
iDataType=TDataType(KHtmlMimeType);
iConfidence=EProbable;
}
else if (ext.CompareF(KDotXml)==0)
{
iDataType=TDataType(KXmlMimeType);
iConfidence=EProbable;
}
}
if (aBuffer.Length() > 0 && iConfidence == ENotRecognized)
{ //don't check data if extension is recognised, otherwise check data file
TInt htmlConfidence = 0;
TInt xmlConfidence = 0;
// Description Valid in
// HTML XHTML XML
//
_LIT8(KXml, "<?xml"); // Header info X X
_LIT8(KEmbeddedXml, "<xml"); // Embbeded XML content X X
_LIT8(KXmlScheme, "<xs:"); // Schema X
_LIT8(KHtml, "<html"); // HTML document X X
_LIT8(KBody, "<body"); // Body element X X
_LIT8(KTitle, "<title"); // Document title X X
_LIT8(KHead, "<head"); // Information about document X X
_LIT8(KDocType, "<!doctype"); // Document type X X X
_LIT8(KHtmlDocType, "<!DOCTYPE html"); // H/XHTML document X X
_LIT8(KXmlStyle, "<?xml-"); // Stylesheet X
if (aBuffer.FindF(KXml) >=0)
{
++xmlConfidence;
}
if (aBuffer.FindF(KEmbeddedXml) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KXmlScheme) >=0)
{
++xmlConfidence;
}
if (aBuffer.FindF(KHtml) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KBody) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KTitle) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KHead) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KDocType) >=0)
{
++xmlConfidence;
++htmlConfidence;
}
if (aBuffer.FindF(KHtmlDocType) >=0)
{
++htmlConfidence;
}
if (aBuffer.FindF(KXmlStyle) >=0)
{
++xmlConfidence;
}
// Use the xmlConfidence and htmlConfidence values and decide on the type.
// The datatype will be set to text/xml if 2 or more xml tags match.
// If there are 3 or more html tags the data type is overridden to text/html
// as if we have xml and html tags, it is likely that it is an xhtml file
// which has the text.html datatype. If there are more than 3 html tags
// the confidence is increased.
// If there is an extension but it doesn't match data, knock down confidence.
if(xmlConfidence>1)
{
iDataType=TDataType(KXmlMimeType);
//knock down confidence if extension is not recognised
iConfidence=(positionOfLastDot>=0) ? EPossible : EProbable;
}
if(htmlConfidence>2)
{
iDataType=TDataType(KHtmlMimeType);
//knock down confidence if extension is not recognised
iConfidence=(positionOfLastDot>=0) ? EPossible : EProbable;
}
if(htmlConfidence>3)
iConfidence=EProbable;
}
}
#ifdef __UI_FRAMEWORKS_V2__
const TImplementationProxy ImplementationTable[]=
{
IMPLEMENTATION_PROXY_ENTRY(0x10001315,CApaWebRecognizer::NewL)
};
EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
{
aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
return ImplementationTable;
}
CApaDataRecognizerType* CApaWebRecognizer::NewL()
{
return new (ELeave) CApaWebRecognizer();
}
#else
EXPORT_C CApaDataRecognizerType* CreateRecognizer()
// The gate function - ordinal 1
//
{
CApaDataRecognizerType* self = new CApaWebRecognizer();
return self; // NULL if new failed
}
#endif //__UI_FRAMEWORKS_V2__
#ifndef EKA2
GLDEF_C TInt E32Dll(TDllReason /*aReason*/)
//
// DLL entry point
//
{
return KErrNone;
}
#endif // EKA2