// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

// f32\sfile\sf_dat.cpp

// 

//

#include "sf_std.h"

CFsObjectConIx* TheContainer;

CFsObjectCon* FileSystems;

CFsObjectCon* Files;

CFsObjectCon* FileShares;

CFsObjectCon* Dirs;

CFsObjectCon* Formats;

CFsObjectCon* RawDisks;

CFsObjectCon* Extensions;

CFsObjectCon* ProxyDrives;

CServerFs* TheFileServer;

TDrive TheDrives[KMaxDrives];

//#ifndef __SECURE_API__

TFileName TheDefaultPath;

//#endif

HBufC* TheDriveNames[KMaxDrives];

SCapabilitySet AllCapabilities;

SCapabilitySet DisabledCapabilities;

RThread TheServerThread;

RAllocator* ServerThreadAllocator;

TBool OpenOnDriveZOnly;

TBool LocalFileSystemInitialized;

TBool RefreshZDriveCache;

TBool CompFsMounted;

TBool CompFsSync;

TBool StartupInitCompleted;

TBool LocalDriveMappingSet;

CKernEventNotifier* TheKernEventNotifier;

GLDEF_D TCodePageUtils TheCodePage;

TBool FatUtilityFunctionsSet = EFalse;              //-- Flag. Is set to ETrue when LoadLocale() sets a pointer to TFatUtilityFunctions

TBool FatUtilitiesUpdateDrivesNotified = EFalse;    //-- Flag. Is set to ETrue when all drives get a notification about locale change

#if defined(_DEBUG) || defined(_DEBUG_RELEASE)

TInt ErrorCondition;

TInt ErrorCount;

TUint32 DebugReg;

TInt UserHeapAllocFailCount;

TInt KernHeapAllocFailCount;

TInt DebugNCNotifier=0;

TCorruptNameRec* gCorruptFileNameList=NULL;

TCorruptLogRec* gCorruptLogRecordList=NULL;

TInt gNumberOfCorruptHits=0;

HBufC* gCorruptFileNamesListFile=NULL;

TInt SessionCount;  // number of CSessionFs's

TInt ObjectCount;   // number of CFsObjects

#endif

TBool F32Properties::iInitialised = 0;

TInt  F32Properties::iRomAddress  = 0;

TInt  F32Properties::iRomLength   = 0;

EXPORT_C TBusLocalDrive& GetLocalDrive(TInt aDrive)

//

// Export localdrives

//

	{

	return(LocalDrives::GetLocalDrive(aDrive));

	}

EXPORT_C TInt GetProxyDrive(TInt aDrive, CProxyDrive*& aProxyDrive)

//

// Export proxy drives

//

	{

	return TheDrives[aDrive].CurrentMount().ProxyDrive(aProxyDrive);

	}

EXPORT_C CExtProxyDrive* GetProxyDrive(TInt aDrive)

	{

	return (LocalDrives::GetProxyDrive(aDrive));

	}

EXPORT_C TBool IsProxyDrive(TInt aDrive)

	{

	return (LocalDrives::IsProxyDrive(aDrive));

	}

EXPORT_C TBool IsValidLocalDriveMapping(TInt aDrive)

//

// Is the drive number to local drive mapping valid?

//

	{

	return(LocalDrives::IsValidDriveMapping(aDrive));

	}

EXPORT_C TInt DriveNumberToLocalDriveNumber(TInt aDrive)

//

// Get the mapping from drive number to local drive

//

	{

	return(LocalDrives::DriveNumberToLocalDriveNumber(aDrive));

	}

EXPORT_C TInt GetLocalDriveNumber(TBusLocalDrive* aLocDrv)

//

// Get the local drive number from local drive

//

	{

	return(LocalDrives::GetLocalDriveNumber(aLocDrv));

	}

struct TFatUtilityFunctions;

#if defined(_DEBUG) || defined(_DEBUG_RELEASE)

TBool EnableFatUtilityFunctions = ETrue;

#endif

EXPORT_C const TFatUtilityFunctions* GetFatUtilityFunctions()

	{

#if defined(_DEBUG) || defined(_DEBUG_RELEASE)

	if (!EnableFatUtilityFunctions)

		{

		return NULL; // Bypass Locale Dll/Codepage FAT converions, use default implementation

		}

#endif

	switch(TheCodePage.CodepageLoaded())

		{

		case TCodePageUtils::ECodePageDll:

			return ((TFatUtilityFunctions*)(TheCodePage.CodepageFatUtilityFunctions().iConvertFromUnicodeL));

		case TCodePageUtils::ELocaleDll:

			return TheCodePage.LocaleFatUtilityFunctions();

		default:

			return NULL; // if no Locale Dll/Codepage Dll is loaded, use default implementation

		}

	}

EXPORT_C const TCodePageUtils& GetCodePage()

	{

	return TheCodePage;

	}

/**

@internalTechnology

Helper class for parsing F32 INI files

*/

class TIniFileReader

	{

public:

	TIniFileReader(const TPtrC8& aData);

	TInt Next();

	TBool IsSection(const TDesC8& aSection = KNullDesC8);

	TBool IsProperty(const TDesC8& aProperty, TBool& aPropVal);

	TBool IsProperty(const TDesC8& aProperty, TInt32& aPropVal);

	TBool IsProperty(const TDesC8& aProperty, TDes8& aPropVal);

public:

	const TPtrC8& iData;

	TPtr8 iCurrentLine;

	TInt iCurrentPos;

	};	

/**

@internalTechnology

TIniFileReader constructor

*/

TIniFileReader::TIniFileReader(const TPtrC8& aData)

  : iData(aData),

	iCurrentLine(NULL,0,256),

    iCurrentPos(0)

	{

	}

/**

@internalTechnology

Reads the next line from an F32 INI file.

	- On exit, iCurrentLine represents the current line

	- On exit, iCurrentPos points to the next line in the INI file

*/

TInt TIniFileReader::Next()

	{

	// Check if we have run into the end of the file	

	TInt bufRemainder = (iData.Length()-iCurrentPos);

	if (!bufRemainder)

		{

		return(KErrEof);

		}

	// Setup the descriptor passed with the next record - don't include the record terminator

	// The line terminators are CR + LF for DOS

	// whereas only LF for Unix line endings

	iCurrentLine.Set(((TUint8*)iData.Ptr()+iCurrentPos),bufRemainder,bufRemainder);

	TInt len = iCurrentLine.Locate('\n');

	if (len != KErrNotFound)

		{

		iCurrentPos += len;

		// Check for DOS line ending to support both DOS and Unix formats

		if ((len != 0) && (((TUint8*)iData.Ptr())[iCurrentPos-1] == '\r'))

			{

			len--;

			}

		iCurrentLine.SetLength(len);

		}

	else

		{

		iCurrentPos=iData.Length();

		}

	// Point iCurrentPos to the next non-empty line

	while (iCurrentPos<iData.Length() && (((TUint8*)iData.Ptr())[iCurrentPos]=='\n' || ((TUint8*)iData.Ptr())[iCurrentPos]=='\r'))

		{

		iCurrentPos++;

		}

	// iCurrentLine now describes a single line of the INI file

	return(KErrNone);

	}

/**

@internalTechnology

Examines the current INI line, returning ETrue if the line contains the requested INI section

	- An INI section must be of the form [section_name]

	- Passing KNullDesC as an argument returns ETrue if the line describes any INI section

*/

TBool TIniFileReader::IsSection(const TDesC8& aSection)

	{

	TInt sectionStart = iCurrentLine.Locate('[');

	TInt sectionEnd   = iCurrentLine.Locate(']');

	if(sectionStart == 0 && sectionEnd > 1)

		{

		if(aSection == KNullDesC8)

			{

			return(ETrue);

			} 

		const TInt sectionLength = sectionEnd-sectionStart-1;

		// Found a start of section marker - does it match what we're interested in?

		TPtr8 sectionPtr(&iCurrentLine[1+sectionStart], sectionLength, sectionLength);

		if(sectionPtr == aSection)

			{

			return(ETrue);

			}

		}

	return(EFalse);

	}

/**

@internalTechnology

Examines the current INI line, returning ETrue if the line contains the requested property

*/

TBool TIniFileReader::IsProperty(const TDesC8& aProperty, TBool& aPropVal)

	{

	TPtrC8 token;

	TLex8 lex(iCurrentLine);

	token.Set(lex.NextToken());

	if (token.Length() == 0 || token != aProperty)

		{

		return(EFalse);

		}

	lex.SkipSpace();

	TInt32 propVal;

	if (lex.BoundedVal(propVal, 1) == KErrNone)

		{

		aPropVal = propVal;

		return(ETrue);

		}

	// allow "on" or "off" strings if no integer found

	_LIT8(KBoolOn,"ON");

	_LIT8(KBoolOff,"OFF");

	if (lex.Remainder().Left(KBoolOn().Length()).CompareF(KBoolOn) == KErrNone)

		{

		aPropVal = ETrue;

		return(ETrue);

		}

	if (lex.Remainder().Left(KBoolOff().Length()).CompareF(KBoolOff) == KErrNone)

		{

		aPropVal = EFalse;

		return(ETrue);

		}

	return(EFalse);

	}

/**

@internalTechnology

Examines the current INI line, returning ETrue if the line contains the requested property

*/

TBool TIniFileReader::IsProperty(const TDesC8& aProperty, TInt32& aPropVal)

	{

	TPtrC8 token;

	TLex8 lex(iCurrentLine);

	token.Set(lex.NextToken());

	if (token.Length() == 0 || token != aProperty)

		{

		return(EFalse);

		}

	lex.SkipSpace();

	TInt32 propVal;

	if (lex.Val(propVal) != KErrNone)

		{

		return(EFalse);

		}

	aPropVal = propVal;

	return(ETrue);

	}

/**

@internalTechnology

Examines the current INI line, returning ETrue if the line contains the requested property

*/

TBool TIniFileReader::IsProperty(const TDesC8& aProperty, TDes8& aPropVal)

	{

	TPtrC8 token;

	TLex8 lex(iCurrentLine);

	token.Set(lex.NextToken());

	if (token.Length() == 0 || token != aProperty)

		{

		return(EFalse);

		}

	lex.SkipSpace();

	aPropVal = lex.Remainder().Left(aPropVal.MaxLength());

	return(ETrue);

	}

/**

@internalTechnology

Initialises the F32 properties with a ROM address representing the INI file in ROM

@return KErrNone on success

@return KErrAlreadyExists if the properties have already been initialised

*/

EXPORT_C TInt F32Properties::Initialise(TInt aRomAddress, TInt aLength)

	{

	if(iInitialised)

		{

		// F32 properties have already been initialised

		return(KErrAlreadyExists);

		}

	iInitialised = ETrue;

	iRomAddress  = aRomAddress;

	iRomLength   = aLength;

	return(KErrNone);

	}

/**

@internalTechnology

Returns the requested F32 property string

@param aSection  The name of the F32 INI section

@param aProperty The name of the F32 propery within the section

@param aPropVal  Returns the requested property value (unchanged if the property does not exist)

@return ETrue if the property exists, EFalse otherwise

*/

EXPORT_C TBool F32Properties::GetString(const TDesC8& aSection, const TDesC8& aProperty, TDes8& aPropVal)

	{

	if(!iInitialised)

		{

		return(EFalse);

		}

	TPtrC8 iniPtr((TUint8*)iRomAddress, iRomLength);

	TIniFileReader iniReader(iniPtr);

	FOREVER

		{

		// Read the next line of the INI file

		if(iniReader.Next() == KErrEof)

			{

			break;

			}		

		if(iniReader.IsSection(aSection))

			{

			// Found the section we're interested in

			//  - look for the property, until we get to EOF or the next section

			FOREVER

				{

				if(iniReader.Next() == KErrEof)

					{

					return(EFalse);

					}

				if(iniReader.IsSection())

					{

					return(EFalse);

					}

				if(iniReader.IsProperty(aProperty, aPropVal))

					{

					return(ETrue);

					}

				}

			}

		}

	// No section found...

	return(EFalse);

	}

/**

@internalTechnology

Returns the requested integer F32 property value

@param aSection  The name of the F32 INI section

@param aProperty The name of the F32 propery within the section

@param aPropVal  Returns the requested property value (unchanged if the property does not exist)

@return ETrue if the property exists, EFalse otherwise

*/

EXPORT_C TBool F32Properties::GetInt(const TDesC8& aSection, const TDesC8& aProperty, TInt32& aPropVal)

	{

	if(!iInitialised)

		{

		return(EFalse);

		}

	TPtrC8 iniPtr((TUint8*)iRomAddress, iRomLength);

	TIniFileReader iniReader(iniPtr);

	FOREVER

		{

		// Read the next line of the INI file

		if(iniReader.Next() == KErrEof)

			{

			break;

			}		

		if(iniReader.IsSection(aSection))

			{

			// Found the section we're interested in

			//  - look for the property, until we get to EOF or the next section

			FOREVER

				{

				if(iniReader.Next() == KErrEof)

					{

					return(EFalse);

					}

				if(iniReader.IsSection())

					{

					return(EFalse);

					}

				if(iniReader.IsProperty(aProperty, aPropVal))

					{

					return(ETrue);

					}

				}

			}

		}

	// No section found...

	return(EFalse);

	}

/**

@internalTechnology

Returns the requested boolean F32 property value

@param aSection  The name of the F32 INI section

@param aProperty The name of the F32 propery within the section

@param aPropVal  Returns the requested property value (unchanged if the property does not exist)

@return ETrue if the property exists, EFalse otherwise

*/

EXPORT_C TBool F32Properties::GetBool(const TDesC8& aSection, const TDesC8& aProperty, TBool& aPropVal)

	{

	if(!iInitialised)

		{

		return(EFalse);

		}

	TPtrC8 iniPtr((TUint8*)iRomAddress, iRomLength);

	TIniFileReader iniReader(iniPtr);

	FOREVER

		{

		// Read the next line of the INI file

		if(iniReader.Next() == KErrEof)

			{

			break;

			}		

		if(iniReader.IsSection(aSection))

			{

			// Found the section we're interested in