/*
* 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: 
* @internalComponent * @released
* Rofsbuild Obey file class and its reader class.
*
*/


#include <string.h>

#ifdef __VC32__
 #ifdef __MSVCDOTNET__
  #include <strstream>
  #include <iomanip>
 #else //__MSVCDOTNET__
  #include <strstrea.h>
  #include <iomanip.h>
 #endif  //__MSVCDOTNET__
#else // !__VC32__
#ifdef __TOOLS2__
	#include <sstream>
	#include <iomanip>
	#include <sys/stat.h>
	using namespace std;
#else
	#include <strstrea.h>
	#include <iomanip.h>
#endif
 
#endif //__VC32__


#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>

#include <e32std.h>
#include <e32std_private.h>
#include <e32rom.h>
#include <u32std.h>
#include <f32file.h>

#include "h_utl.h"
#include "r_obey.h"
#include "r_coreimage.h"
#include "patchdataprocessor.h"
#include "filesysteminterface.h" 
#include "r_driveimage.h"

extern TInt gCodePagingOverride;
extern TInt gDataPagingOverride;
extern ECompression gCompress;
extern TBool gEnableStdPathWarning; // Default to not warn if destination path provided for a file is not in standard path.



#define _P(word)	word, sizeof(word)-1	// match prefix, optionally followed by [HWVD]
#define _K(word)	word, 0					// match whole word

const ObeyFileKeyword ObeyFileReader::iKeywords[] =
{
	{_K("file"),		2,-2, EKeywordFile, "File to be copied into ROFS"},
	{_K("data"),		2,-2, EKeywordData, "same as file"},

	{_K("rofsname"),	1, 1, EKeywordRofsName, "output file for ROFS image"},
	{_K("romsize"),		1, 1, EKeywordRomSize, "size of ROM image"}, 
	{_P("hide"),	    2, -1, EKeywordHide, "Exclude named file from ROM directory structure"},
	{_P("alias"),	    2, -2, EKeywordAlias, "Create alias for existing file in ROM directory structure"},
	{_P("rename"),	    2, -2, EKeywordRename, "Change the name of a file in the ROM directory structure"},
	{_K("rofssize"),		1, 1, EKeywordRofsSize, "maximum size of ROFS image"},
	{_K("romchecksum"),	1, 1, EKeywordRofsChecksum, "desired 32-bit checksum value for the whole image"},
	{_K("version"),		1, 1, EKeywordVersion, "ROFS image version number"},
	{_K("time"),	    1,-1, EKeywordTime, "ROFS image timestamp"},
	{_K("extensionrofs"),1+2, 1, EKeywordExtensionRofs, "Start of definition of optional Extension ROFS"},
	{_K("extensionrofsname"),1, 1, EKeywordCoreRofsName, "ROFS image on which extension ROFS is based"},
	{_K("rem"),			0, 0, EKeywordNone, "comment"},
	{_K("stop"),		0, 0, EKeywordNone, "Terminates OBEY file prematurely"},
	{_K("romchecksum"),	1, 1, EKeywordRomChecksum, "desired 32-bit checksum value for the whole ROFS image"},
	{_K("coreimage"),	1, 1, EKeywordCoreImage, "Core image to be used for extension directory structure"},
	{_K("autosize"),	1, 1, EKeywordRofsAutoSize, "Automatically adjust maximum image size to actual used"},
	{_K("pagingoverride"),	1, 1, EKeywordPagingOverride, "Overide the demand paging attributes for every file in ROM, NOPAGING|DEFAULTUNPAGED|DEFAULTPAGED"},
	{_K("codepagingoverride"),	1, 1, EKeywordCodePagingOverride, "Overide the code paging attributes for every file in ROM, NOPAGING|DEFAULTUNPAGED|DEFAULTPAGED"},
	{_K("datapagingoverride"),	1, 1, EKeywordDataPagingOverride, "Overide the data paging attributes for every file in ROM, NOPAGING|DEFAULTUNPAGED|DEFAULTPAGED"},
	{_K("dataimagename"),1, 1,EKeywordDataImageName, "Data Drive image file name"},
	{_K("dataimagefilesystem"),1, 1,EKeywordDataImageFileSystem, "Drive image file system format"},
	{_K("dataimagesize"),1, 1,EKeywordDataImageSize, "Maximum size of Data Drive image"},
	{_K("volume"),1, -1,EKeywordDataImageVolume, "Volume Label of Data Drive image"},
	{_K("sectorsize"),1, 1,EKeywordDataImageSectorSize, "Sector size(in bytes) of Data Drive image"},
	{_K("fattable"),1, 1,EKeywordDataImageNoOfFats, "Number of FATs in the Data Drive image"},
	// things we don't normally report in the help information
	{_K("trace"),		1, 1, EKeywordTrace, "(ROMBUILD activity trace flags)"},
	{_K("filecompress"),2, -2,EKeywordFileCompress,"Non-XIP Executable to be loaded into the ROM compressed" },
	{_K("fileuncompress"),2, -2,EKeywordFileUncompress,"Non-XIP Executable to be loaded into the ROM uncompressed" },
	{_K("patchdata"),2, 5,EKeywordPatchDllData, "Patch exported data"},
	{_K("imagename"), 1, 1, EKeywordSmrImageName, "output file for SMR image"},
	{_K("hcrdata"), 1, 1, EKeywordSmrFileData, "file data for HCR SMR image"},
	{_K("formatversion"), 1, 1, EKeywordSmrFormatVersion, "format version for HCR SMR image"},
	{_K("payloadflags"), 1, 1, EKeywordSmrFlags, "payload flags for the HCR SMR image"},
	{_K("payloaduid"), 1, 1, EKeywordSmrUID, "payload UID for the HCR SMR image"},
	{0,0,0,0,EKeywordNone,""}
};

extern TInt isNumber(TText *aString);
extern TInt getNumber(TText *aStr);

void ObeyFileReader::KeywordHelp() // static
	{
	cout << "Obey file keywords:\n";

	const ObeyFileKeyword* k=0;
	for (k=iKeywords; k->iKeyword!=0; k++)
		{
		if (k->iHelpText==0)
			continue;
		if (k->iHelpText[0]=='(' && !H.iVerbose)
			continue;	// don't normally report things in (parentheses)

		char buf[32];
		sprintf(buf, "%-20s", k->iKeyword);
		if (k->iKeywordLength)
			memcpy(buf+k->iKeywordLength,"[HWVD]",6);
		if (H.iVerbose)
			sprintf(buf+20,"%2d",k->iNumArgs);
		cout << "    " << buf << " " << k->iHelpText << endl;
		}
	cout << endl;

	cout << "File attributes:\n";

	const FileAttributeKeyword* f=0;
	for (f=iAttributeKeywords; f->iKeyword!=0; f++)
		{
		if (f->iHelpText==0)
			continue;
		if (f->iHelpText[0]=='(' && !H.iVerbose)
			continue;	// don't normally report things in (parentheses)

		char buf[32];
		sprintf(buf, "%-20s", f->iKeyword);
		if (H.iVerbose)
			sprintf(buf+20,"%2d",k->iNumArgs);
		cout << "    " << buf << " " << f->iHelpText << endl;
		}
	cout << endl;
	}

ObeyFileReader::ObeyFileReader(TText* aFileName):
iObeyFile(0),iMark(0), iMarkLine(0), iCurrentMark(0), iCurrentLine(0), imaxLength(0)
	{

	iFileName = new TText[strlen((const char *)aFileName)+1];
	strcpy((char *)iFileName,(const char *)aFileName);
	iNumWords = 0 ;
	for(unsigned int i = 0 ; i < KNumWords ; i++)
		iWord[i] = 0 ;
	iSuffix = new TText();
	iLine = 0 ;
	iCurrentObeyStatement = 0 ;
	 }


ObeyFileReader::~ObeyFileReader()
	{
	if (iObeyFile)
		fclose(iObeyFile);
	iObeyFile=0;
	delete [] iFileName;
	delete [] iLine;
	delete [] iCurrentObeyStatement;
	}

TBool ObeyFileReader::Open()
//
// Open the file & return a status
//
{
    if (!iFileName)
    {
        return EFalse;
    }

    iObeyFile = fopen((const char *)iFileName,"r");
    if (!iObeyFile)
    {
        Print(EError,"Cannot open obey file %s\n",iFileName);
        return EFalse;
    }
    if (SetLineLengthBuffer() != KErrNone)
    {
        Print(EError,"Insufficent Memory to Continue.");	
        return EFalse;
    }
    return ETrue;
}
   
 TInt ObeyFileReader::SetLineLengthBuffer()
 // Get the Max Line length for the given obey file and allocate the buffer.
 	{
	char ch = '\0';
 	TInt length = 0;
		
	Rewind();
 	while ((ch = (char)fgetc(iObeyFile)) != EOF)
 		{
 		length++;
		if (ch == '\n')
			{
 			if (length > imaxLength)
 				imaxLength = length;
 			length = 0;				
 			}
 		}
	
	if (length > imaxLength)
 		imaxLength = length;
		
	if (0 == imaxLength)
		{
		Print(EError,"Empty obey file passed as input.");
		exit(-1);
		}			
	else if (imaxLength < 2)
		{
		Print(EError,"Invalid obey file passed as input.");
		exit(-1);
		}
		
	Rewind();
 	iLine = new TText[imaxLength+1];
 	
 	if(!iLine)
 		return KErrNoMemory;
 
 	return KErrNone;
 	}

void ObeyFileReader::Mark()
	{

	iMark = iCurrentMark;
	iMarkLine = iCurrentLine-1;
	}

void ObeyFileReader::MarkNext()
	{

	iMark = ftell(iObeyFile);
	iMarkLine = iCurrentLine;
	}

void ObeyFileReader::Rewind()
	{
	
	fseek(iObeyFile,iMark,SEEK_SET);
	iCurrentMark = iMark;
	iCurrentLine = iMarkLine;
	}

void ObeyFileReader::CopyWord(TInt aIndex, TText*& aString)
	{
	aString = new TText[strlen((const char *)iWord[aIndex])+1];
	strcpy((char *)aString, (const char *)iWord[aIndex]);
	}

TInt ObeyFileReader::ReadAndParseLine()
	{
	if (feof(iObeyFile))
		return KErrEof;
	iCurrentLine++;
	iCurrentMark = ftell(iObeyFile);
	iLine[0]='\0';
	char *cp = fgets((char*)iLine,imaxLength+1,iObeyFile); (void)cp;
	iCurrentObeyStatement = new TText[imaxLength+1];
	strcpy((char*)iCurrentObeyStatement,(char*)iLine);
	iNumWords = Parse();
	return KErrNone;
	}

TInt ObeyFileReader::NextLine(TInt aPass, enum EKeyword& aKeyword)
	{

NextLine:
	TInt err = ReadAndParseLine();
	if (err == KErrEof)
		return KErrEof;
	if (iNumWords == 0 || stricmp((const char*)iWord[0], "rem")==0)
		goto NextLine;
	if (stricmp((const char*)iWord[0], "stop")==0)
		return KErrEof;

	const ObeyFileKeyword* k=0;
	for (k=iKeywords; k->iKeyword!=0; k++)
		{
		if (k->iKeywordLength == 0)
			{
			// Exact case-insensitive match on keyword
			if (stricmp((const char*)iWord[0], k->iKeyword) != 0)
				continue;
			iSuffix = 0;
			}
		else
			{
			// Prefix match
			if (strnicmp((const char*)iWord[0], k->iKeyword, k->iKeywordLength) != 0)
				continue;
			// Suffix must be empty, or a variant number in []
			iSuffix = iWord[0]+k->iKeywordLength;
			if (*iSuffix != '\0' && *iSuffix != '[')
				continue;
			}
		// found a match
		if ((k->iPass & aPass) == 0)
			goto NextLine;
		if (k->iNumArgs>=0 && (1+k->iNumArgs != iNumWords))
			{
			Print(EError, "Incorrect number of arguments for keyword %s on line %d.\n",
				iWord[0], iCurrentLine);
			goto NextLine;
			}
		if (k->iNumArgs<0 && (1-k->iNumArgs > iNumWords))
			{
			Print(EError, "Too few arguments for keyword %s on line %d.\n",
				iWord[0], iCurrentLine);
			goto NextLine;
			}
		
		aKeyword = k->iKeywordEnum;
		return KErrNone;
		}
	if (aPass == 1)
		Print(EWarning, "Unknown keyword '%s'.  Line %d ignored\n", iWord[0], iCurrentLine);
	goto NextLine;
	}

inline TBool ObeyFileReader::IsGap(char ch)
	{
	return (ch==' ' || ch=='=' || ch=='\t');
	}

TInt ObeyFileReader::Parse()
//
// splits a line into words, and returns the number of words found
//
	{

	TInt i;
	TText *letter=iLine;
	TText *end=iLine+strlen((char *)iLine);
	for (i=0; (TUint)i<KNumWords; i++)
		iWord[i]=end;

	enum TState {EInWord, EInQuotedWord, EInGap};
	TState state=EInGap;

	i=0;
	while ((TUint)i<KNumWords && letter<end)
		{
		char ch=*letter;
		if (ch==0)
			break;
		if (ch=='\n')
			{
			*letter='\0';	// remove trailing newline left by fgets
			break;
			}
		switch (state)
			{
		case EInGap:
			if (ch=='\"')
				{
				if (letter[1]!=0 && letter[1]!='\"')
					iWord[i++]=letter+1;
				state=EInQuotedWord;
				}
			else if (!IsGap(ch))
				{
				iWord[i++]=letter;
				state=EInWord;
				}
			else
				*letter=0;
			break;
		case EInWord:
			if (ch=='\"')
				{
				*letter=0;
				if (letter[1]!=0 && letter[1]!='\"')
					iWord[i++]=letter+1;
				state=EInQuotedWord;
				}
			else if (IsGap(ch))
				{
				*letter=0;
				state=EInGap;
				}
			break;
		case EInQuotedWord:
			if (ch=='\"')
				{
				*letter=0;
				state=EInGap;
				}
			break;
			}
		letter++;
		}
	return i;
	}


void ObeyFileReader::ProcessTime(TInt64& aTime)
//
// Process the timestamp
//
	{
	char timebuf[256];
	if (iNumWords>2)
		sprintf(timebuf, "%s_%s", iWord[1], iWord[2]);
	else
		strcpy(timebuf, (char*)iWord[1]);

	TInt r=StringToTime(aTime, timebuf);
	if (r==KErrGeneral)
		{
		Print(EError, "incorrect format for time keyword on line %d\n", iCurrentLine);
		exit(0x670);
		}
	if (r==KErrArgument)
		{
		Print(EError, "Time out of range on line %d\n", iCurrentLine);
		exit(0x670);
		}
	}

TInt64 ObeyFileReader::iTimeNow=0;
void ObeyFileReader::TimeNow(TInt64& aTime)
	{
	if (iTimeNow==0)
		{
		TInt sysTime=time(0);					// seconds since midnight Jan 1st, 1970
		sysTime-=(30*365*24*60*60+7*24*60*60);	// seconds since midnight Jan 1st, 2000
		TInt64 daysTo2000AD=730497;
		TInt64 t=daysTo2000AD*24*3600+sysTime;	// seconds since 0000
		t=t+3600;								// BST (?)
		iTimeNow=t*1000000;						// milliseconds
		}
	aTime=iTimeNow;
	}

/**
Funtion to get the current oby file line
*/
TText* ObeyFileReader::GetCurrentObeyStatement() const
{ 
	return iCurrentObeyStatement;
}

// File attributes.


const FileAttributeKeyword ObeyFileReader::iAttributeKeywords[] =
{
	{"attrib",3			,0,1,EAttributeAtt, "File attributes in ROM file system"},
	{"exattrib",3		,0,1,EAttributeAttExtra, "File extra attributes in ROM file system"},
//	{_K("compress")		,1,1,EAttributeCompress, "Compress file"},
	{"stack",3			,1,1,EAttributeStack, "?"},
	{"fixed",3			,1,0,EAttributeFixed, "Relocate to a fixed address space"},
	{"priority",3		,1,1,EAttributePriority, "Override process priority"},
	{_K("uid1")			,1,1,EAttributeUid1, "Override first UID"},
	{_K("uid2")			,1,1,EAttributeUid2, "Override second UID"},
	{_K("uid3")			,1,1,EAttributeUid3, "Override third UID"},
	{_K("heapmin")		,1,1,EAttributeHeapMin, "Override initial heap size"},
	{_K("heapmax")		,1,1,EAttributeHeapMax, "Override maximum heap size"},
	{_K("capability")	,1,1,EAttributeCapability, "Override capabilities"},
	{_K("unpaged")		,1,0,EAttributeUnpaged, "Don't page code or data for this file"},
	{_K("paged")		,1,0,EAttributePaged, "Page code and data for this file"},
	{_K("unpagedcode")	,1,0,EAttributeUnpagedCode, "Don't page code for this file"},
	{_K("pagedcode")	,1,0,EAttributePagedCode, "Page code for this file"},
	{_K("unpageddata")	,1,0,EAttributeUnpagedData, "Don't page data for this file"},
	{_K("pageddata")	,1,0,EAttributePagedData, "Page data for this file"},
	{0,0,0,0,EAttributeAtt,0}
};

TInt ObeyFileReader::NextAttribute(TInt& aIndex, TInt aHasFile, enum EFileAttribute& aKeyword, TText*& aArg)
	{
NextAttribute:
	if (aIndex >= iNumWords)
		return KErrEof;
	TText* word=iWord[aIndex++];
	const FileAttributeKeyword* k;
	for (k=iAttributeKeywords; k->iKeyword!=0; k++)
		{
		if (k->iKeywordLength == 0)
			{
			// Exact match on keyword
			if (stricmp((const char*)word, k->iKeyword) != 0)
				continue;
			}
		else
			{
			// Prefix match
			if (strnicmp((const char*)word, k->iKeyword, k->iKeywordLength) != 0)
				continue;
			}
		// found a match
		if (k->iNumArgs>0)
			{
			TInt argIndex = aIndex;
			aIndex += k->iNumArgs;		// interface only really supports 1 argument
			if (aIndex>iNumWords)
				{
				Print(EError, "Missing argument for attribute %s on line %d\n", word, iCurrentLine);
				return KErrArgument;
				}
			aArg=iWord[argIndex];
			}
		if (k->iIsFileAttribute && !aHasFile)
			{
			Print(EError, "File attribute %s applied to non-file on line %d\n", word, iCurrentLine);
			return KErrNotSupported;
			}
		aKeyword=k->iAttributeEnum;
		return KErrNone;
		}
	Print(EWarning, "Unknown attribute '%s' skipped on line %d\n", word, iCurrentLine);
	goto NextAttribute;
	}



/**
Constructor:
1.Obey file instance.
2.used by both rofs and datadrive image.

@param aReader - obey file reader object.
*/
CObeyFile::CObeyFile(ObeyFileReader& aReader):
	iRomFileName(NULL),
	iExtensionRofsName(0),
	iKernelRofsName(0),
	iRomSize(0),
	iVersion(0,0,0),
	iCheckSum(0),
	iNumberOfFiles(0),
	iTime(0),
	iRootDirectory(0),
	iNumberOfDataFiles(0),
	iDriveFileName(0),
	iDataSize(0),
	iDriveFileFormat(0),
	iConfigurableFatAttributes(new ConfigurableFatAttributes),
	iReader(aReader), 
	iMissingFiles(0), 
	iLastExecutable(0),
	iFirstFile(0), 	
	iCurrentFile(0),
	iAutoSize(EFalse),
	iAutoPageSize(4096),
	iPagingOverrideParsed(0),
	iCodePagingOverrideParsed(0),
	iDataPagingOverrideParsed(0),
	iPatchData(new CPatchDataProcessor)
	{
		iNextFilePtrPtr = &iFirstFile ;
	}

/**
Obey file Destructor.
1.Release the tree memory.
2.Release all allocated memory if any.
*/
CObeyFile::~CObeyFile()
//
// Destructor
//
	{
	if(iDriveFileName)
		delete[] iDriveFileName;					
	if(iDriveFileFormat)
		delete[] iDriveFileFormat;
	iRootDirectory->deleteTheFirstNode();                
	iRootDirectory->InitializeCount();

	Release();
	delete [] iRomFileName;
	if (iRootDirectory)
		iRootDirectory->Destroy();

	delete iConfigurableFatAttributes;
	delete iPatchData;
	}

TBool CObeyFile::AutoSize()
{
	return iAutoSize;
}

TUint32 CObeyFile::AutoPageSize()
{
	return iAutoPageSize;
}

void CObeyFile::Release()
//
// Free resources not needed after building a ROM
//
	{
	iFirstFile = 0;
	iNextFilePtrPtr = &iFirstFile;
	}

TRomBuilderEntry *CObeyFile::FirstFile()
	{
	iCurrentFile = iFirstFile;
	return iCurrentFile;
	}

TRomBuilderEntry *CObeyFile::NextFile()
	{
	iCurrentFile = iCurrentFile ? iCurrentFile->iNext : 0;
	return iCurrentFile;
	}

TText* CObeyFile::ProcessCoreImage()
	{
	// check for coreimage keyword and return filename
	iReader.Rewind();
	enum EKeyword keyword;
	TText* coreImageFileName = 0;
	while (iReader.NextLine(1,keyword) != KErrEof)
		{
		if (keyword == EKeywordCoreImage)
			{
			istringstream val(iReader.Word(1),ios_base::in|ios_base::out);	  
			iReader.CopyWord(1, coreImageFileName);
			iReader.MarkNext(); // ready for processing extension
			break;
			}
		}
		return coreImageFileName;
	}

void CObeyFile::SkipToExtension()
	{
	iReader.Rewind();
	enum EKeyword keyword;
	while (iReader.NextLine(1,keyword) != KErrEof)
		{
		  if (keyword == EKeywordExtensionRofs)
			  {
			  iReader.Mark(); // ready for processing extension
			  break;
			  }
		}
	}
TInt CObeyFile::ProcessRofs()
	{
	//
	// First pass through the obey file to set up key variables
	//

	iReader.Rewind();

	TInt count=0;
	enum EKeyword keyword;
	while (iReader.NextLine(1,keyword) != KErrEof)
		{
		  if (keyword == EKeywordExtensionRofs)
		    {
		      if (count==0)
			return KErrNotFound;		// no core ROFS, just extension ROFSs.
		      break;
		    }

		count++;
		if (! ProcessKeyword(keyword))
			return KErrGeneral;
		}

	if (!GotKeyVariables())
		return KErrGeneral;

	//
	// second pass to process the file specifications in the obey file building
	// up the TRomNode directory structure and the TRomBuilderEntry list
	//
	iReader.Rewind();

	iRootDirectory = new TRomNode((TText*)"");
	iLastExecutable = iRootDirectory;

	TInt align=0;
	while (iReader.NextLine(2,keyword)!=KErrEof)
		{
		if (keyword == EKeywordExtensionRofs)
			break;

		if (keyword == EKeywordHide)
			keyword = EKeywordHideV2;

		switch (keyword)
			{
			  
		case EKeywordHide:
		case EKeywordAlias:
		case EKeywordRename:
			if (!ProcessRenaming(keyword))
				return KErrGeneral;
			break;
		case EKeywordPatchDllData:
		{
			// Collect patchdata statements to process at the end
			StringVector patchDataTokens;
			SplitPatchDataStatement(patchDataTokens); 
			iPatchData->AddPatchDataStatement(patchDataTokens);									
			break;
		}
		default:
		        if (!ProcessFile(align, keyword))
		        return KErrGeneral;
		        align=0;
		        break;
			}
		}

	if(!ParsePatchDllData())
		return KErrGeneral;
	iReader.Mark();			// ready for processing the extension rom(s)

	if (iMissingFiles!=0)
		{
		return KErrGeneral;
		}
	if ( 0 == iNumberOfFiles )
		{
		Print(EError, "No files specified.\n");
		return KErrGeneral;
		}

	return KErrNone;
	}

TBool CObeyFile::Process()
{
	TBool result = ETrue;
	iReader.Rewind();
	enum EKeyword keyword;
	while(iReader.NextLine(1, keyword) != KErrEof)
	{
		String key = iReader.Word(0);
		String value = iReader.Word(1);
		if(iKeyValues.find(key) != iKeyValues.end())
		{
			iKeyValues[key].push_back(value);
		}
		else
		{
			StringVector values;
			values.push_back(value);
			iKeyValues[key]=values;
		}


	}
	return result;
}
StringVector CObeyFile::getValues(const String& aKey)
{
	StringVector values;
	if(iKeyValues.find(aKey) != iKeyValues.end())
	{
		values = iKeyValues[aKey];
	}
	return values;
}

/**
Process drive obey file and construct the tree.

@return - Return the status,
          'KErrnone' for Success,
          'KErrGeneral' for failure (required keywords not there in obey file or failed
									 to construct the tree).
*/
TInt CObeyFile::ProcessDataDrive()
	{

	iReader.Rewind();
	enum EKeyword keyword;

	// First pass through the obey file to set up key variables
	while (iReader.NextLine(1,keyword) != KErrEof)	
		{
		if (!ProcessDriveKeyword(keyword))			
			return KErrGeneral;
		}

	if (!GotKeyDriveVariables())
		return KErrGeneral;

	// Second pass to process the file specifications in the obey file.
	// Build the TRomNode directory structure and the TRomBuilderEntry list
	iReader.Rewind();
	iRootDirectory = new TRomNode((TText*)"//");					
	iLastExecutable = iRootDirectory;

	while(iReader.NextLine(2,keyword)!=KErrEof)
		{
		switch (keyword)
			{
			case EKeywordPatchDllData:
			{	// Collect patchdata statements to process at the end
				StringVector patchDataTokens;
				SplitPatchDataStatement(patchDataTokens); 				
				iPatchData->AddPatchDataStatement(patchDataTokens);									
				break;
			}
	
			case EKeywordHide:						
			case EKeywordFile:
			case EKeywordData:
			case EKeywordFileCompress:
			case EKeywordFileUncompress:
		        if (!ProcessDriveFile(keyword))
				  return KErrGeneral;
		        break;
	
			default:							
		        break;
			}
		}

	if(!ParsePatchDllData())
		return KErrGeneral;
    if (iMissingFiles)   
		{
		Print(EError, "Source Files Missing.\n");
		return KErrGeneral;
		}
	if (!iNumberOfFiles)
		Print(EWarning,"No files specified.\n");
	
	return KErrNone;
	}


/**
Process and stores the keyword information.

@param aKeyword - keyword to update its value to variables.
@return - Return the status i.e Success,
*/
TBool CObeyFile::ProcessDriveKeyword(enum EKeyword aKeyword)
	{

	TBool success = ETrue;
	switch (aKeyword)
		{
		case EKeywordDataImageName:
			iReader.CopyWord(1, iDriveFileName);
			break;
		case EKeywordDataImageFileSystem:
			iReader.CopyWord(1, iDriveFileFormat);
			break;
		case EKeywordDataImageSize:
			{
			char* bigString = iReader.Word(1);
			if(*bigString == '\0')
				{
				Print(EWarning,"Not a valid Image Size. Default size is considered\n");		
				break;
				}
#ifdef __LINUX__
			errno = 0;
			iDataSize = strtoll(bigString,NULL,10);
			if((iDataSize == LONG_MAX) || (iDataSize == LONG_MIN) ||(errno == ERANGE))
				{
				Print(EWarning,"Invalid Range. Default size is considered\n");		
				}
#else
			iDataSize = _atoi64(bigString);
#endif
			}
			break;
		case EKeywordDataImageVolume:
			{				
				// Get the volume label provided by using "volume" keyword.
				// e.g. vlolume = NO NAME
				String volumeLabel = (char*)iReader.GetCurrentObeyStatement();
				String volumeLabelKeyword = "volume";

				TUint position = volumeLabel.find(volumeLabelKeyword.c_str(),0,volumeLabelKeyword.size());
				position += volumeLabelKeyword.size();
				if (volumeLabel.find('=',position) != std::string::npos)
				{
					position=volumeLabel.find('=',position);
					++position;
				}								

				position = volumeLabel.find_first_not_of(' ',position);
				if (position != std::string::npos)
				{
					volumeLabel = volumeLabel.substr(position);

					// Remove the new line character from the end
					position = volumeLabel.find_first_of("\r\n");
					if (position != std::string::npos)
						volumeLabel = volumeLabel.substr(0,position);

					iConfigurableFatAttributes->iDriveVolumeLabel = volumeLabel.data(); 								
				}
				else
				{
					Print(EWarning,"Value for Volume Label is not provided. Default value is considered.\n");
				}
				break;
			}
		case EKeywordDataImageSectorSize:
			{
				char* bigString = iReader.Word(1);
				TInt sectorSize = atoi(bigString);
				if(sectorSize <= 0)
				{
					Print(EWarning,"Invalid Sector Size value. Default value is considered.\n");
				}
				else
				{
					iConfigurableFatAttributes->iDriveSectorSize = atoi(bigString);
				}
			}			
			break;
		case EKeywordDataImageNoOfFats:
			{
				char* bigString = iReader.Word(1);
				TInt noOfFats = atoi(bigString);
				if (noOfFats <=0)
				{
					Print(EWarning,"Invalid No of FATs specified. Default value is considered.\n");
				}
				else
				{
					iConfigurableFatAttributes->iDriveNoOfFATs = atoi(bigString);			
				}
			}			
			break;			
		default:
			// unexpected keyword iReader.Word(0), keep going.
			break;
		}
	return success;
	}


/**
Checks whether obeyfile has supplied enough variables to continue.

@return - Return the status 
		  ETrue - Supplied valid values,
		  EFalse- Not valied values.
*/
TBool CObeyFile::GotKeyDriveVariables()
   	{

	TBool retVal=ETrue;

	// Mandatory keywords
	if (iDriveFileName==0)                             
		{                                                  
		Print(EError,"The name of the image file has not been supplied.\n");
		Print(EError,"Use the keyword \"dataimagename\".\n");
		retVal = EFalse;
		}
		
	// Check for '-'ve entered value.
	if(iDataSize <= 0)
		{
		Print(EWarning,"Image Size should be positive. Default size is Considered.\n");
		}

	// File system format.
	if(iDriveFileFormat==0)
		{
		Print(EError,"The name of the file system not been supplied.\n");
		Print(EError,"Use the keyword \"dataimagefilesystem\".\n");
		retVal = EFalse;
		}

	// Checking the validity of file system format.
	if(iDriveFileFormat)
		{
		strupr((char *)iDriveFileFormat);
		enum TFileSystem check = (TFileSystem)0;
		if(!(CDriveImage::FormatTranslation(iDriveFileFormat,check)))
			{
			Print(EError,"The name of the file system not supported : %s\n",iDriveFileFormat);
			retVal = EFalse;
			}
		}
	
	if(retVal)
		Print(ELog,"\nCreating Data Drive image : %s\n", iDriveFileName);

  	return retVal;
	}

/**
Process a parsed line to set up one or more new TRomBuilder entry objects.

@param  - obey file keyword.
// iWord[0] = the keyword (file,)      
// iWord[1] = the PC pathname
// iWord[2] = the EPOC pathname
// iWord[3] = start of the file attributes

@return - Return the status 
		  ETrue - Successful generation of tree.
		  EFalse- Fail to generate the tree.
*/
TBool CObeyFile::ProcessDriveFile(enum EKeyword aKeyword)               
	{

	TBool isPeFile = ETrue;
	TBool aFileCompressOption, aFileUncompressOption;

	TInt epocPathStart=2;
	aFileCompressOption = aFileUncompressOption = EFalse;
	// do some validation of the keyword
	TInt currentLine = iReader.CurrentLine();

	switch (aKeyword)
		{
		case EKeywordData:
		case EKeywordHide:
			isPeFile = EFalse;
			break;

		case EKeywordFile:
			break;

		case EKeywordFileCompress:
			aFileCompressOption = ETrue;
			break;

		case EKeywordFileUncompress:
			aFileUncompressOption = ETrue;
			break;

		default:
			return EFalse;
		}

	if (aKeyword!=EKeywordHide)
		{
		// check the PC file exists
		char* nname = NormaliseFileName(iReader.Word(1));                 

#if defined(__MSVCDOTNET__) || defined(__TOOLS2__)																		  
		ifstream test(nname);
#else //!__MSVCDOTNET__
		ifstream test(nname, ios::nocreate);
#endif //__MSVCDOTNET__

		if (!test)
			{
			Print(EError,"Cannot open file %s for input.\n",iReader.Word(1));
			iMissingFiles++;
			}

		test.close();
		if(nname)
			free(nname);												
		nname = 0;
		}
	else
		epocPathStart=1;   

	iNumberOfFiles++;

	TBool endOfName=EFalse;
	TText *epocStartPtr=IsValidFilePath(iReader.Text(epocPathStart));
	TText *epocEndPtr=epocStartPtr;

	if (epocStartPtr==NULL)
		{
		Print(EError, "Invalid destination path on line %d\n",currentLine);
		return EFalse;
		}

	TRomNode* dir=iRootDirectory;
	TRomNode* subDir=0;
	TRomBuilderEntry *file=0;      

	while (!endOfName)
		{
		endOfName = GetNextBitOfFileName(&epocEndPtr);      
		if (endOfName) // file
			{
			TRomNode* alreadyExists=dir->FindInDirectory(epocStartPtr);

			if ((aKeyword != EKeywordHide) && alreadyExists) // duplicate file
				{
				Print(EError, "Duplicate file for %s on line %d\n",iReader.Word(1),iReader.CurrentLine());
				return EFalse;
				}
			else if((aKeyword == EKeywordHide) && (alreadyExists))
				{ 
				alreadyExists->iEntry->iHidden = ETrue;
				alreadyExists->iHidden = ETrue;
				return ETrue;
				}
			else if((aKeyword == EKeywordHide) && (!alreadyExists))
				{
				Print(EWarning, "Hiding non-existent file %s on line %d\n",iReader.Word(1),iReader.CurrentLine());
				return ETrue;
				}
				
			file = new TRomBuilderEntry(iReader.Word(1), epocStartPtr);                   
			file->iExecutable=isPeFile;
			if( aFileCompressOption )
			{
			file->iCompressEnabled = ECompressionCompress;
			}
			else if(aFileUncompressOption )
			{
			file->iCompressEnabled = ECompressionUncompress;
			}
			
			TRomNode* node=new TRomNode(epocStartPtr, file);
			if (node==0)
				return EFalse;

			TInt r=ParseFileAttributes(node, file, aKeyword);         
			if (r!=KErrNone)
				return EFalse;

			if(gCompress != ECompressionUnknown)
			{
			node->iFileUpdate = ETrue;
			}

			if((node->iOverride) || (aFileCompressOption) || (aFileUncompressOption))
			{
			node->iFileUpdate = ETrue;
			}

			dir->AddFile(node);	// to drive directory structure.
			}		 
		else	
		{
		// directory
		subDir = dir->FindInDirectory(epocStartPtr);      
		if (!subDir) // sub directory does not exist
			{
			if(aKeyword==EKeywordHide)
			{
			Print(EWarning, "Hiding non-existent file %s on line %d\n",iReader.Word(1),iReader.CurrentLine());
			return ETrue;
			}
			subDir = dir->NewSubDir(epocStartPtr);
			if (!subDir)
				return EFalse;
			}
			dir=subDir;

			epocStartPtr = epocEndPtr;
			}  // end of else.
		}
	return ETrue;
	}


TInt CObeyFile::SetStackSize(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'stack'.\n");
	aNode->SetStackSize( getNumber(aStr) );
	return KErrNone;
	}

TInt CObeyFile::SetHeapSizeMin(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'heapmin'.\n");
	aNode->SetHeapSizeMin( getNumber(aStr) );
	return KErrNone;
	}

TInt CObeyFile::SetHeapSizeMax(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'heapmax'.\n");
	aNode->SetHeapSizeMax( getNumber(aStr) );
	return KErrNone;
	}

TInt CObeyFile::SetCapability(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr))
		{
		Print(EDiagnostic,"Old style numeric CAPABILTY specification ignored.\n");
		return KErrNone;
		}
	SCapabilitySet cap;
	TInt r = ParseCapabilitiesArg(cap, (char*)aStr);
	if( KErrNone == r )
		{
		aNode->SetCapability( cap );
		}
	return r;
	}

TInt CObeyFile::SetPriority(TRomNode *aNode, TText *aStr)
	{
	TProcessPriority priority;
	if (isNumber(aStr))
		{
		priority = (TProcessPriority)getNumber(aStr);
		}
	else
		{
		char *str=(char *)aStr;
		if (stricmp(str, "low")==0)
			priority=EPriorityLow;
		else if (strnicmp(str, "background", 4)==0)
			priority=EPriorityBackground;
		else if (strnicmp(str, "foreground", 4)==0)
			priority=EPriorityForeground;
		else if (stricmp(str, "high")==0)
			priority=EPriorityHigh;
		else if (strnicmp(str, "windowserver",3)==0)
			priority=EPriorityWindowServer;
		else if (strnicmp(str, "fileserver",4)==0)
			priority=EPriorityFileServer;
		else if (strnicmp(str, "realtimeserver",4)==0)
			priority=EPriorityRealTimeServer;
		else if (strnicmp(str, "supervisor",3)==0)
			priority=EPrioritySupervisor;
		else
			return Print(EError, "Unrecognised priority keyword.\n");
		}
	if (priority<EPriorityLow || priority>EPrioritySupervisor)
		return Print(EError, "Priority out of range.\n");

	aNode->SetPriority( priority );
	return KErrNone;
	}

TInt CObeyFile::SetUid1(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'uid1'.\n");
	aNode->SetUid1( getNumber(aStr) );
	return KErrNone;
	}
TInt CObeyFile::SetUid2(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'uid2'.\n");
	aNode->SetUid2( getNumber(aStr) );
	return KErrNone;
	}
TInt CObeyFile::SetUid3(TRomNode *aNode, TText *aStr)
	{
	if (isNumber(aStr)==0)
		return Print(EError, "Number required as argument for keyword 'uid3'.\n");
	aNode->SetUid3( getNumber(aStr) );
	return KErrNone;
	}


TInt CObeyFile::ParseFileAttributes(TRomNode *aNode, TRomBuilderEntry* aFile, enum EKeyword aKeyword)
//
// Process any inline keywords
//
	{
	TInt currentLine = iReader.CurrentLine();
	enum EFileAttribute attribute;
	TInt r=KErrNone;
	TInt index=3;
	TText* arg=0;

	while(r==KErrNone)
		{
		r=iReader.NextAttribute(index,(aFile!=0),attribute,arg);
		if (r!=KErrNone)
			break;
		switch(attribute)
			{
		case EAttributeAtt:
			r=aNode->SetAtt(arg);
			break;
		case EAttributeAttExtra:
			r=aNode->SetAttExtra(arg, aFile, aKeyword);
			break;
		case EAttributeStack:
			r=SetStackSize(aNode, arg);
			break;
		case EAttributeFixed:
			aNode->SetFixed();
			r = KErrNone;
			break;
		case EAttributeUid1:
			r=SetUid1(aNode, arg);
			break;
		case EAttributeUid2:
			r=SetUid2(aNode, arg);
			break;
		case EAttributeUid3:
			r=SetUid3(aNode, arg);
			break;
		case EAttributeHeapMin:
			r=SetHeapSizeMin(aNode, arg);
			break;
		case EAttributeHeapMax:
			r=SetHeapSizeMax(aNode, arg);
			break;
		case EAttributePriority:
			r=SetPriority(aNode, arg);
			break;
		case EAttributeCapability:
			r=SetCapability(aNode, arg);
			break;
		case EAttributeUnpaged:
			aNode->iOverride |= KOverrideCodeUnpaged|KOverrideDataUnpaged;
			aNode->iOverride &= ~(KOverrideCodePaged|KOverrideDataPaged);
			break;
		case EAttributePaged:
			aNode->iOverride |= KOverrideCodePaged|KOverrideDataPaged;
			aNode->iOverride &= ~(KOverrideCodeUnpaged|KOverrideDataUnpaged);
			break;
		case EAttributeUnpagedCode:
			aNode->iOverride |= KOverrideCodeUnpaged;
			aNode->iOverride &= ~KOverrideCodePaged;
			break;
		case EAttributePagedCode:
			aNode->iOverride |= KOverrideCodePaged;
			aNode->iOverride &= ~KOverrideCodeUnpaged;
			break;
		case EAttributeUnpagedData:
			aNode->iOverride |= KOverrideDataUnpaged;
			aNode->iOverride &= ~KOverrideDataPaged;
			break;
		case EAttributePagedData:
			aNode->iOverride |= KOverrideDataPaged;
			aNode->iOverride &= ~KOverrideDataUnpaged;
			break;

		default:
			return Print(EError, "Unrecognised keyword in file attributes on line %d.\n",currentLine);
			}
		}

	if (r==KErrEof)
		return KErrNone;
	return r;
	}


TBool CObeyFile::ProcessFile(TInt /*aAlign*/, enum EKeyword aKeyword)
//
// Process a parsed line to set up one or more new TRomBuilder entry objects.
// iWord[0] = the keyword (file, primary or secondary)
// iWord[1] = the PC pathname
// iWord[2] = the EPOC pathname
// iWord[3] = start of the file attributes
//
	{
	TBool isPeFile = ETrue;
	TBool aFileCompressOption, aFileUncompressOption;
	TInt epocPathStart=2;
	aFileCompressOption = aFileUncompressOption = EFalse;
 	TBool warnFlag = EFalse;
 	static const char aStdPath[] = "SYS\\BIN\\";
 	static const int sysBinLength = sizeof(aStdPath)-1;

	// do some validation of the keyword
	TInt currentLine = iReader.CurrentLine();

	switch (aKeyword)
		{
	case EKeywordData:
	case EKeywordHideV2:
		iNumberOfDataFiles++;
		isPeFile = EFalse;
		break;

	case EKeywordFile:
		warnFlag = gEnableStdPathWarning;
		break;
	case EKeywordFileCompress:
		aFileCompressOption = ETrue;
		warnFlag = gEnableStdPathWarning;
		break;
	case EKeywordFileUncompress:
		aFileUncompressOption = ETrue;
		warnFlag = gEnableStdPathWarning;
		break;

	default:
		Print(EError,"Unexpected keyword '%s' on line %d.\n",iReader.Word(0),currentLine);
		return EFalse;
		}

	if (aKeyword!=EKeywordHideV2)
		{

		// check the PC file exists
		char* nname = NormaliseFileName(iReader.Word(1));

#if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
		ifstream test(nname);
#else //!__MSVCDOTNET__
		ifstream test(nname, ios::nocreate);
#endif //__MSVCDOTNET__

		if (!test)
			{
			Print(EError,"Cannot open file %s for input.\n",iReader.Word(1));
			iMissingFiles++;
			}
		test.close();
		free(nname);
		}
	else
		epocPathStart=1;

	iNumberOfFiles++;


 	TBool endOfName=EFalse;
	TText *epocStartPtr=IsValidFilePath(iReader.Text(epocPathStart));
	TText *epocEndPtr=epocStartPtr;
	if (epocStartPtr==NULL)
		{
		Print(EError, "Invalid destination path on line %d\n",currentLine);
		return EFalse;
		}
 	if(warnFlag)	// Check for the std destination path(for executables) as per platsec.
 		{
 		if(strnicmp(aStdPath,(const char*)epocStartPtr,sysBinLength) != 0)
 			{
 			Print(EWarning,"Invalid destination path on line %d. \"%s\" \n",currentLine,epocStartPtr);
 			}
		}
	
	TRomNode* dir=iRootDirectory;
	TRomNode* subDir=0;
	TRomBuilderEntry *file=0;
	while (!endOfName)
		{
		endOfName = GetNextBitOfFileName(&epocEndPtr);
		if (endOfName) // file
			{
			TRomNode* alreadyExists=dir->FindInDirectory(epocStartPtr);
			/*
			 * The EKeywordHideV2 keyword is used to indicate that:
			 *	1. if the file exists in the same image and then hidden, mark it hidden
			 *	2. if the file exists in another image, but in this (ROFS) image, it is
			 *		required to hide that file, create a 0 length file entry setting the 'hide'
			 *		flag so that at runtime, file gets hidden in the composite filesystem.
			 */
			if ((aKeyword != EKeywordHideV2) && alreadyExists) // duplicate file
				{
				Print(EError, "Duplicate file for %s on line %d\n",iReader.Word(1),iReader.CurrentLine());
				return EFalse;
				}

			TBool aHidden = aKeyword==EKeywordHideV2;
			/* The file is only marked hidden and hence the source file name isn't known 
			 * here as hide statement says :
			 *	hide <filename as in ROM>
			 * Therefore, create TRomBuilderEntry with iFileName as 0 for hidden file when
			 * the file doesn't exist in the same ROM image. Otherwise, the src file name
			 * is known because of alreadyExists (which comes from the 'file'/'data' statement).
			 */
			if(aHidden)
				file = new TRomBuilderEntry(0, epocStartPtr);
			else
				file = new TRomBuilderEntry(iReader.Word(1), epocStartPtr);
			file->iExecutable=isPeFile;
			file->iHidden= aHidden;
			if( aFileCompressOption )
			{
				file->iCompressEnabled = ECompressionCompress;
			}
			else if(aFileUncompressOption )
			{
				file->iCompressEnabled = ECompressionUncompress;
			}
			TRomNode* node=new TRomNode(epocStartPtr, file);
			if (node==0)
				return EFalse;
			TInt r=ParseFileAttributes(node, file, aKeyword);
			if (r!=KErrNone)
				return EFalse;

			dir->AddFile(node);	// to ROFS directory structure
			AddFile(file);		// to our list of files
			}		 
		else // directory
			{
			subDir = dir->FindInDirectory(epocStartPtr);
			if (!subDir) // sub directory does not exist
				{
				subDir = dir->NewSubDir(epocStartPtr);
				if (!subDir)
					return EFalse;
				}
			dir=subDir;
			epocStartPtr = epocEndPtr;
			}
		}
	return ETrue;
	}


TBool CObeyFile::ProcessRenaming(enum EKeyword aKeyword)
	{

	// find existing file
	TBool endOfName=EFalse;
	TText *epocStartPtr=IsValidFilePath(iReader.Text(1));
	
	// Store the current name and new name to maintain renamed file map
	String currentName=iReader.Word(1);
	String newName=iReader.Word(2);

	TText *epocEndPtr=epocStartPtr;
	if (epocStartPtr==NULL)
		{
		Print(EError, "Invalid source path on line %d\n",iReader.CurrentLine());
		return EFalse;
		}

	char saved_srcname[257];
	strcpy(saved_srcname, iReader.Word(1));

	TRomNode* dir=iRootDirectory;
	TRomNode* existingFile=0;
	while (!endOfName)
		{
		endOfName = GetNextBitOfFileName(&epocEndPtr);
		if (endOfName) // file
			{
			existingFile=dir->FindInDirectory(epocStartPtr);
			if (existingFile)
				{
				TInt fileCount=0;
				TInt dirCount=0;
				existingFile->CountDirectory(fileCount, dirCount);
				if (dirCount != 0 || fileCount != 0)
					{
					Print(EError, "Keyword %s not applicable to directories - line %d\n",iReader.Word(0),iReader.CurrentLine());
					return EFalse;
					}
				}
			}
		else // directory
			{
			TRomNode* subDir = dir->FindInDirectory(epocStartPtr);
			if (!subDir) // sub directory does not exist
				break;
			dir=subDir;
			epocStartPtr = epocEndPtr;
			}
		}
	if (aKeyword == EKeywordHide)
		{
			/*
			 * The EKeywordHide keyword is used to indicate that if the file exists in 
			 * the primary ROFS image and then hidden in extension ROFS, mark it hidden.
			 */
		if (!existingFile)
			{
			Print(EWarning, "Hiding non-existent file %s on line %d\n", 
				saved_srcname, iReader.CurrentLine());
			// Just a warning, as we've achieved the right overall effect.
			}
		else if (existingFile->iFileStartOffset==(TUint)KFileHidden)
			{
			Print(EWarning, "Hiding already hidden file %s on line %d\n", 
				saved_srcname, iReader.CurrentLine());
			// We will igrore this request, otherwise it will "undelete" it.
			}
		else
			{
			  //hidden files will not be placed to the image
			  existingFile->iHidden = ETrue;
			}
		return ETrue;
		}

	if (!existingFile)
		{
		Print(EError, "Can't %s non-existent source file %s on line %d\n",
			iReader.Word(0), saved_srcname, iReader.CurrentLine());
		return EFalse;
		}

	epocStartPtr=IsValidFilePath(iReader.Text(2));
	epocEndPtr=epocStartPtr;
	endOfName=EFalse;
	if (epocStartPtr==NULL)
		{
		Print(EError, "Invalid destination path on line %d\n",iReader.CurrentLine());
		return EFalse;
		}

	TRomNode* newdir=iRootDirectory;
	while (!endOfName)
		{
		endOfName = GetNextBitOfFileName(&epocEndPtr);
		if (endOfName) // file
			{
			TRomNode* alreadyExists=newdir->FindInDirectory(epocStartPtr);
			if (alreadyExists && !(alreadyExists->iHidden)) // duplicate file
				{
				Print(EError, "Duplicate file for %s on line %d\n",saved_srcname,iReader.CurrentLine());
				return EFalse;
				}
			}
		else // directory
			{
			TRomNode* subDir = newdir->FindInDirectory(epocStartPtr);
			if (!subDir) // sub directory does not exist
				{
				subDir = newdir->NewSubDir(epocStartPtr);
				if (!subDir)
					return EFalse;
				}
			newdir=subDir;
			epocStartPtr = epocEndPtr;
			}
		}

	if (aKeyword == EKeywordRename)
		{
		// rename => remove existingFile and insert into tree at new place
		// has no effect on the iNextExecutable or iNextNodeForSameFile links

		TInt r=ParseFileAttributes(existingFile, existingFile->iEntry, aKeyword);
		if (r!=KErrNone)
			return EFalse;
		existingFile->Rename(dir, newdir, epocStartPtr);
		// Store the current and new name of file in the renamed file map.
		iPatchData->AddToRenamedFileMap(currentName, newName);
		return ETrue;
		}
	
	// alias => create new TRomNode entry and insert into tree

	TRomNode* node = new TRomNode(epocStartPtr, 0);
	if (node == 0)
		{
		Print(EError, "Out of memory\n");
		return EFalse;
		}
	node->Alias(existingFile);
	TInt r=ParseFileAttributes(node, 0, aKeyword);
	if (r!=KErrNone)
		return EFalse;

	newdir->AddFile(node);	// to ROFS directory structure, though possibly hidden

	return ETrue;
	}

TInt ParsePagingPolicy(const char* policy)
	{
	if(stricmp(policy,"NOPAGING")==0)
		return EKernelConfigPagingPolicyNoPaging;
	else if (stricmp(policy,"ALWAYSPAGE")==0)
		return EKernelConfigPagingPolicyAlwaysPage;
	else if(stricmp(policy,"DEFAULTUNPAGED")==0)
		return EKernelConfigPagingPolicyDefaultUnpaged;
	else if(stricmp(policy,"DEFAULTPAGED")==0)
		return EKernelConfigPagingPolicyDefaultPaged;
	return KErrArgument;
	}

TBool CObeyFile::ProcessKeyword(enum EKeyword aKeyword)
	{
	#ifdef __TOOLS2__
	istringstream val(iReader.Word(1));
	#else
	istrstream val(iReader.Word(1),strlen(iReader.Word(1)));
	#endif

#if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
	val >> setbase(0);
#endif //__MSVCDOTNET__

	TBool success = ETrue;

	switch (aKeyword)
		{
	case EKeywordRofsName:
		iReader.CopyWord(1, iRomFileName);
		break;
	case EKeywordRofsSize:
		val >> iRomSize;
		break;
	case EKeywordVersion:
		val >> iVersion;
		break;
	case EKeywordRofsChecksum:
		val >> iCheckSum;
		break;
	case EKeywordTime:
		iReader.ProcessTime(iTime);
		break;
	case EKeywordPagingOverride:
		{
		if(iPagingOverrideParsed)
			Print(EWarning, "PagingOverride redefined - previous PagingOverride values lost\n");
		if(iCodePagingOverrideParsed)
			Print(EWarning, "PagingOverride defined - previous CodePagingOverride values lost\n");
		if(iDataPagingOverrideParsed)
			Print(EWarning, "PagingOverride defined - previous DataPagingOverride values lost\n");
		iPagingOverrideParsed = true;
		TInt policy = ParsePagingPolicy(iReader.Word(1));
		if(policy<0)
			{
			Print(EError,"Unrecognised option for PAGINGOVERRIDE keyword\n");
			success = false;
			}
		else
			{
			gCodePagingOverride = policy;
			gDataPagingOverride = policy;
			}
		}
		break;
	case EKeywordCodePagingOverride:
		{
		if(iCodePagingOverrideParsed)
			Print(EWarning, "CodePagingOverride redefined - previous CodePagingOverride values lost\n");
		if(iPagingOverrideParsed)
			Print(EWarning, "CodePagingOverride defined - previous PagingOverride values lost\n");
		iCodePagingOverrideParsed = true;
		TInt policy = ParsePagingPolicy(iReader.Word(1));
		if(policy<0)
			{
			Print(EError,"Unrecognised option for CODEPAGINGOVERRIDE keyword\n");
			success = false;
			}
		else
			gCodePagingOverride = policy;
		}
		break;
	case EKeywordDataPagingOverride:
		{
		if(iDataPagingOverrideParsed)
			Print(EWarning, "DataPagingOverride redefined - previous DataPagingOverride values lost\n");
		if(iPagingOverrideParsed)
			{
			Print(EError, "DataPagingOverride defined - previous PagingOverride values lost\n");
			success = false;
			break;
			}
		iDataPagingOverrideParsed = true;
		TInt policy = ParsePagingPolicy(iReader.Word(1));
		if(policy<0)
			{
			Print(EError,"Unrecognised option for DATAPAGINGOVERRIDE keyword\n");
			success = false;
			}
		else
			gDataPagingOverride = policy;
		}
		break;
	case EKeywordRofsAutoSize:
		iAutoSize = ETrue;
		val >> iAutoPageSize;
		break;
	default:
		// unexpected keyword iReader.Word(0)
		break;
		}

	return success;
	}

TBool CObeyFile::GotKeyVariables()
//
// Checks that the obeyfile has supplied enough variables to continue
//
   	{

	TBool retVal=ETrue;

	// Mandatory keywords

	if (iRomFileName==0)
		{
		Print(EAlways,"The name of the image file has not been supplied.\n");
		Print(EAlways,"Use the keyword \"rofsname\".\n");
		retVal = EFalse;
		}
	if (iRomSize==0)
		{
		Print(EAlways,"The size of the image has not been supplied.\n");
		Print(EAlways,"Use the keyword \"rofssize\".\n");
		retVal = EFalse;
		}

	// Apply defaults as necessary
	if (iTime==0)
		{
		Print(ELog, "No timestamp specified. Using current time...\n");
		ObeyFileReader::TimeNow(iTime);
		}

	Print(ELog, "\nCreating Rofs image %s\n", iRomFileName);
	return retVal;
	}


TText *CObeyFile::IsValidFilePath(TText *aPath)
//
// Check the path is valid
//
	{
	// skip leading "\"
	if (*aPath=='\\')
		aPath++;
	if (*aPath==0)
		return NULL; // file ends in a backslash

	TText *p=aPath;
	TInt len=0;
	FOREVER
		{
		if (*p==0)
			return (len ? aPath : NULL);
		if (*p=='\\')
			{
			if (len==0)
				return NULL;
			len=0;
			}
		len++;
		p++;
		}
	}

TBool CObeyFile::GetNextBitOfFileName(TText **epocEndPtr)
//
// Move the end pointer past the next directory separator, replacing it with 0
//
	{
	while (**epocEndPtr != '\\') // until reach the directory separator
		{
		if (**epocEndPtr==0) // if reach end of string, return TRUE, it's the filename
			return ETrue;
		(*epocEndPtr)++;
		}
	**epocEndPtr=0; // overwrite the directory separator with a 0
	(*epocEndPtr)++; // point past the 0 ready for the next one
	return EFalse;
	}


void CObeyFile::AddFile(TRomBuilderEntry* aFile)
	{
	*iNextFilePtrPtr = aFile;
	iNextFilePtrPtr = &(aFile->iNext);
	}



TInt CObeyFile::ProcessExtensionRofs(MRofsImage* aKernelRom)
	{
	//
	// First pass through the obey file to set up key variables
	//


        iReader.Rewind();

	enum EKeyword keyword;

	// Deal with the "extensionrofs" keyword, which should be first
		
	if (iReader.NextLine(1,keyword) != KErrNone)
		return KErrEof;
	if (keyword != EKeywordExtensionRofs)
		return Print(EError, "Unexpected keyword '%s' at start of extension rom - line %d\n",
			iReader.Word(0), iReader.CurrentLine());
	
	iReader.CopyWord(1, iRomFileName);
	Print(ELog, "\n========================================================\n");
	Print(ELog, "Extension ROFS %s starting at line %d\n\n", iRomFileName, iReader.CurrentLine());


	iReader.MarkNext();		// so that we rewind to the line after the extensionrom keyword

	while (iReader.NextLine(1,keyword) != KErrEof)
		{
		if (keyword == EKeywordExtensionRofs)
			break;
			ProcessExtensionKeyword(keyword);
		}

	if (!GotExtensionVariables(aKernelRom))
		return KErrGeneral;

	// second pass to process the file specifications in the obey file building
	// up the TRomNode directory structure and the TRomBuilderEntry list
	//
	iReader.Rewind();

	//
	if (aKernelRom==0)
		return Print(EError, "Option to extend a kernel ROFS image not yet implemented\n");


	
	iRootDirectory = new TRomNode((TText*)"");
	
	iLastExecutable = 0;

	(aKernelRom->RootDirectory())->deleteTheFirstNode();


	iRootDirectory = aKernelRom->CopyDirectory(iLastExecutable);
	aKernelRom->SetRootDirectory(iRootDirectory);


	TInt align=0;
	while (iReader.NextLine(2,keyword)!=KErrEof)
		{
		if (keyword == EKeywordExtensionRofs)
			break;

		switch (keyword)
			{
		case EKeywordHide:
		case EKeywordAlias:
		case EKeywordRename:
			if (!ProcessRenaming(keyword))
				return KErrGeneral;
			break;

		case EKeywordPatchDllData:
		{	
			// Collect patchdata statements to process at the end
			StringVector patchDataTokens;
			SplitPatchDataStatement(patchDataTokens); 
			iPatchData->AddPatchDataStatement(patchDataTokens);									
			break;
		}
		default:
			if (!ProcessFile(align, keyword))
				return KErrGeneral;
			align=0;
			break;
			}
		}

	if(!ParsePatchDllData() )
		return KErrGeneral;
	
	iReader.Mark();			// ready for processing the next extension rom(s)

	if (iMissingFiles!=0)
		return KErrGeneral;
	if (iNumberOfFiles==0)
		{
		Print(EError, "No files specified.\n");
		return KErrGeneral;
		}
	return KErrNone;
	}




void CObeyFile::ProcessExtensionKeyword(enum EKeyword aKeyword)
	{
	#ifdef __TOOLS2__
	istringstream val(iReader.Word(1));
	#else
	istrstream val(iReader.Word(1),strlen(iReader.Word(1)));
	#endif

#if defined(__MSVCDOTNET__) || defined(__TOOLS2__)
	val >> setbase(0);
#endif //__MSVCDOTNET__

	switch (aKeyword)
		{
	case EKeywordCoreRofsName:
 		iReader.CopyWord(1, iKernelRofsName);
		return;
	case EKeywordRofsSize:
		val >> iRomSize;
		return;
	case EKeywordVersion:
		val >> iVersion;
		return;
	case EKeywordRomChecksum:
		val >> iCheckSum;
		return;
	case EKeywordTime:
		iReader.ProcessTime(iTime);
		return;
	case EKeywordRofsAutoSize:
		iAutoSize = ETrue;
		val >> iAutoPageSize;
		return;
	default:
		Print(EError,"Keyword '%s' not valid in extension ROFS - line %d\n", iReader.Word(0), iReader.CurrentLine());
		break;
		}
	return;
	}

TBool CObeyFile::GotExtensionVariables(MRofsImage* aRom)
//
// Checks that the obeyfile has supplied enough variables to continue
//
   	{

	TBool retVal=ETrue;
  	TText* kernelRofsName = iKernelRofsName;

	// Mandatory keywords

	if (iRomSize==0)
		{
		Print(EAlways,"The size of the extension ROFS has not been supplied.\n");
		Print(EAlways,"Use the keyword \"rofssize\".\n");
		retVal = EFalse;
		}

	// keywords we need if we don't already have a ROFS image to work from

	if (aRom==0)
		{
  		if (iKernelRofsName==0)
			{
			Print(EAlways,"The name of the core ROFS has not been supplied.\n");
			Print(EAlways,"Use the keyword \"rofsname\".\n");
			retVal = EFalse;
			}
		}
	else
		{
		if (iKernelRofsName != 0)
			{
			Print(EWarning,"Keyword \"rofsname\" ignored.\n");
			}
		kernelRofsName = aRom->RomFileName();
		}

	// validation

	// Apply defaults as necessary
	if (iTime==0)
		{
		Print(ELog, "No timestamp specified. Using current time...\n");
		ObeyFileReader::TimeNow(iTime);
		}

	// fix up "*" in rofsname
	TText newname[256];
	TText* p=newname;
	TText* q=iRomFileName;
	TText c;

	while ((c=*q++)!='\0')
		{
		if (c!='*')
			{
			*p++=c;
			continue;
			}
		TText *r=kernelRofsName;
		while ((c=*r++)!='\0')
			*p++=c;
		}
	*p = '\0';
	free(iRomFileName);
  	iRomFileName = (TText*)strdup((char*)newname);

	Print(ELog, "\nCreating ROFS image %s\n", iRomFileName);

	return retVal;
	}

// Fuction to split patchdata statement 
void CObeyFile::SplitPatchDataStatement(StringVector& aPatchDataTokens)
{
	// Get the value of symbol size, address/ordinal and new value 
	// to be patched from the patchdata statement.
	// Syntax of patchdata statements is as follows:
	// 1)	patchdata dll_name  ordinal OrdinalNumber size_in_bytes   new_value 
	// 2)   patchdata dll_name  addr    Address       size_in_bytes   new_value
	for(TInt count=1; count<=5; count++)
	{
		aPatchDataTokens.push_back(iReader.Word(count));
	}

	// Store the the value of current line which will be used
	// when displaying error messages.
	OutputStringStream outStrStream;
	outStrStream<<iReader.CurrentLine();
    aPatchDataTokens.push_back(outStrStream.str());
}

TBool CObeyFile::ParsePatchDllData()
{
	// Get the list of patchdata statements
	VectorOfStringVector patchDataStatements=iPatchData->GetPatchDataStatements();
	// Get the list of renamed file map
	MapOfString RenamedFileMap=iPatchData->GetRenamedFileMap();

	for(TUint count=0; count<patchDataStatements.size(); count++)
	{
		StringVector strVector = patchDataStatements.at(count);
		String filename=strVector.at(0);
		String lineNoStr = strVector.at(5);
		TUint lineNo=getNumber(((TText*)lineNoStr.c_str()));
		TRomNode* existingFile = NULL;
		
		do
		{
			TRomNode* dir=iRootDirectory;			
			TBool endOfName=EFalse;

			TText *epocStartPtr=IsValidFilePath((TText*)filename.c_str());
			if (epocStartPtr==NULL)
			{
				Print(EError, "Invalid source path on line %d\n",lineNo);
				return EFalse;
			}
			epocStartPtr = (TText*)NormaliseFileName((const char*)epocStartPtr);
			TText *epocEndPtr=epocStartPtr;

			while (!endOfName)
			{
				endOfName = GetNextBitOfFileName(&epocEndPtr);
				if (endOfName) // file
				{
					existingFile=dir->FindInDirectory(epocStartPtr);
					if (existingFile)
					{
						TInt fileCount=0;
						TInt dirCount=0;
						existingFile->CountDirectory(fileCount, dirCount);
						if (dirCount != 0 || fileCount != 0)
						{
							Print(EError, "Keyword %s not applicable to directories - line %d\n","patchdata",lineNo);
							return EFalse;
						}
					}
				}
				else // directory
				{
					TRomNode* subDir = dir->FindInDirectory(epocStartPtr);
					if (!subDir) // sub directory does not exist
						break;
					dir=subDir;
					epocStartPtr = epocEndPtr;
				}
			}

			if(!existingFile)
			{
				// If the E32Image file to be patched is not included then check if the
				// file was renamed.
				MapOfStringIterator RenamedFileMapIterator;
				if ((RenamedFileMapIterator=RenamedFileMap.find(filename)) != RenamedFileMap.end())
					filename = (*RenamedFileMapIterator).second; 				
				else
				{
					Print(EError, "File %s not found - line %d\n", filename.c_str(), lineNo);
					return EFalse;
				}
			}
		}while(!existingFile);

		TUint32 aSize, aOrdinal, aNewValue, aOffset;
		TLinAddr aDataAddr;

		aOrdinal = (TUint32)-1;
		aDataAddr = (TUint32)-1;
		aOffset = 0;

		String symbolSize=strVector.at(3);
		aSize = getNumber((TText*)symbolSize.c_str());
		String aValue=strVector.at(4);
		aNewValue = getNumber((TText*)aValue.c_str());		

		DllDataEntry *dataEntry = new DllDataEntry(aSize, aNewValue);

		// Set the address of the data or the ordinal number specified in OBY statement.
		String keyword=strVector.at(1);
		String keywordValue=strVector.at(2);
		
		/* Check for +OFFSET at the end of the ordinal number or address */
		TUint plus = keywordValue.find("+",0);
		if (plus != std::string::npos)
		{
			/* Get the offset that we found after the + sign */
			String offset = keywordValue.substr(plus+1);
			aOffset = getNumber((TText*)offset.c_str());

			keywordValue.resize(plus);		
		}
		if(stricmp (keyword.c_str(), "addr") == 0)
			aDataAddr = getNumber((TText*)keywordValue.c_str());
		
		else 
			 aOrdinal = getNumber((TText*)keywordValue.c_str());
		
		dataEntry->iDataAddress = aDataAddr;
		dataEntry->iOrdinal = aOrdinal;
		dataEntry->iOffset = aOffset;

		existingFile->SetDllData();

		DllDataEntry *aDllDataEntry= existingFile->iEntry->GetFirstDllDataEntry();
		if (aDllDataEntry==NULL)
		{
			// Set the first node of the patchdata linked list
			aDllDataEntry=dataEntry;
			existingFile->iEntry->SetFirstDllDataEntry(aDllDataEntry);
		}
		else
		{
			// Goto the last node
			while((aDllDataEntry->NextDllDataEntry()) != NULL)
			{
				aDllDataEntry = aDllDataEntry->NextDllDataEntry();
			}
			
			// Add the new node at the end of linked list
			aDllDataEntry->AddDllDataEntry(dataEntry);			
		}
	}
	return ETrue;
}