lowlevellibsandfws/apputils/src/StringPoolImplementation.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 02:01:42 +0200
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// Copyright (c) 2001-2009 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:
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//
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#include <e32base.h>
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#include "StringPoolImplementation.h"
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const TInt KMapGranularity=20;
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CStringPoolNode::~CStringPoolNode()
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	{
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	delete iDes;
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	}
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CStringPoolImplementation::CStringPoolImplementation() : iStringMapList(KMapGranularity, _FOFF(TStringIdMap, iSourceTableVal)), iStringMapListReverse(KMapGranularity, _FOFF(TStringIdMap, iTargetTableVal))
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	{
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	}
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CStringPoolImplementation::~CStringPoolImplementation()
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	{
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	// Look for non-expirable strings
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	TInt i;
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	for (i = 0; i < KHashModulo; i++ )
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		{
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		DeleteUndeletableStrings(iCIHashTable, i);
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		DeleteUndeletableStrings(iCSHashTable, i);		
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		}
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#ifdef _DEBUG
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	__LOG(_L8(":Closing String Pool.\n"))
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		TBool leaksFound = EFalse;
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	// Check that the string pool is empty, or more accurately that
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	// everything in it is a pre-loaded string
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	for (i = 0; i < KHashModulo; i++ )
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		{
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		if (iCIHashTable[i])
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			{
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			for (TInt j = 0; j < iCIHashTable[i]->Count(); j++)
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				{
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				if (!StringUtils::IsTableEntry(iCIHashTable[i]->At(j).iVal))
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					{
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					if (!leaksFound)
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						{
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						__LOG(_L8("The following strings were leaked through not being Closed:\n"))
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						leaksFound = ETrue;
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						}
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					// Get the problem string
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					CStringPoolNode* theProblem = 
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						reinterpret_cast<CStringPoolNode*>(
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							iCIHashTable[i]->At(j).iVal & KTokenToNode);
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					__LOG(theProblem->iDes->Des());
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					}
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				}
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			}
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		if (iCSHashTable[i])
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			{
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			for (TInt j = 0; j < iCSHashTable[i]->Count(); j++)
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				{
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				if (!StringUtils::IsTableEntry(iCSHashTable[i]->At(j).iVal))
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					{
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					if (!leaksFound)
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						{
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						__LOG(_L8("The following strings were leaked through not being Closed:\n"))
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						leaksFound = ETrue;
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						}
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					// Get the problem string
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					CStringPoolNode* theProblem = 
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						reinterpret_cast<CStringPoolNode*>(
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							iCSHashTable[i]->At(j).iVal & KTokenToNode);
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					__LOG(theProblem->iDes->Des());
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					}
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				}
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			}
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		if (leaksFound)
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			__DEBUGGER();
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		}
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	if (!leaksFound)
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		__LOG(_L8("No leakages were detected\n"));
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#endif //_DEBUG
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	for (TInt ii = 0; ii < KHashModulo; ii++)
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		{
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		delete iCIHashTable[ii];
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		delete iCSHashTable[ii];
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		}
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	iTablePtrs.Close();
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	iStringMapList.Close();
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	iStringMapListReverse.Close();
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	iRollbackMapList.Close();	
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	iRollbackHashListCS.Close();
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	iRollbackHashListCI.Close();
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	// Notify the external users of the StringPool that the object is getting closed
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	TInt cBCounter = iCallBacks.Count();
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	if(cBCounter>0)
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		{
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		while (--cBCounter>=0)
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			{
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			iCallBacks[cBCounter]->StringPoolClosing();
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   114
			}
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   115
		}
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   116
	iCallBacks.Close();
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   117
	}
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   118
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   119
// Check for any undeletable string and delete them now
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   120
void CStringPoolImplementation::DeleteUndeletableStrings(CArrayFixSeg<RStringTokenEither>* aArray[KHashModulo], TInt i)
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   121
	{
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   122
	if (aArray[i])
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   123
		{
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		for (TInt j = 0; j < aArray[i]->Count(); ++j)
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   125
			{
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   126
			if (!StringUtils::IsTableEntry(aArray[i]->At(j).iVal))
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   127
				{
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   128
				CStringPoolNode* node= reinterpret_cast<CStringPoolNode*>(aArray[i]->At(j).iVal & KTokenToNode);
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   129
				if (KMarkedForNoDeleted==node->iRefcount)
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   130
					{
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   131
					delete node;										
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   132
					aArray[i]->Delete(j);
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   133
					j--;
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   134
					}
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   135
				}
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   136
			}
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   137
		}	
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   138
	}
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   139
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   140
CStringPoolImplementation* CStringPoolImplementation::NewL()
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   141
	{
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	CStringPoolImplementation* table = new (ELeave) CStringPoolImplementation();	
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   143
	return table;
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   144
	}
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diff changeset
   145
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   146
void CStringPoolImplementation::CleanupHashCS(TAny* aImplementation)
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   147
	{
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   148
	CStringPoolImplementation* imp=reinterpret_cast<CStringPoolImplementation*>(aImplementation);
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   149
	CleanUpHash(&imp->iRollbackHashListCS, imp->iCSHashTable);
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   150
	}
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   151
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   152
void CStringPoolImplementation::CleanupHashCI(TAny* aImplementation)
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   153
	{
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   154
	CStringPoolImplementation* imp=reinterpret_cast<CStringPoolImplementation*>(aImplementation);
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   155
	CleanUpHash(&imp->iRollbackHashListCI, imp->iCIHashTable);
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   156
	}
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   157
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   158
void CStringPoolImplementation::CleanUpHash(RPointerArray <RStringTokenEither>* aHashCleanup, CArrayFixSeg<RStringTokenEither>* aHash[KHashModulo])
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   159
	{
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   160
	if (aHashCleanup->Count()>0)
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   161
		{
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   162
		RStringTokenEither* token=(*aHashCleanup)[0];	// Get first entry
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   163
		for (TInt i = 0; i < KHashModulo; i++ )
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diff changeset
   164
			{
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   165
			if (aHash[i])
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diff changeset
   166
				{
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   167
				for (TInt j = 0; j < aHash[i]->Count(); j++)
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parents:
diff changeset
   168
					{
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   169
					if (!StringUtils::IsTableEntry(aHash[i]->At(j).iVal))
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   170
						{						
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   171
						if (aHash[i]->At(j).iVal==token->iVal)
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   172
							{		
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   173
							CStringPoolNode* node= reinterpret_cast<CStringPoolNode*>(aHash[i]->At(j).iVal & KTokenToNode);
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   174
							delete node;
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   175
							aHash[i]->Delete(j);
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   176
							aHashCleanup->Remove(0);
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   177
							break;
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   178
							}
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   179
						}
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   180
					}
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   181
				}
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parents:
diff changeset
   182
			
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   183
			}
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   184
		}
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   185
	}
e4d67989cc36 Revision: 201002
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diff changeset
   186
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   187
void CStringPoolImplementation::CleanupIdMap(TAny* aImplementation)
e4d67989cc36 Revision: 201002
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   188
	{
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   189
	CStringPoolImplementation* imp=reinterpret_cast<CStringPoolImplementation*>(aImplementation);
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   190
	if (imp->iRollbackMapList.Count()>0)
e4d67989cc36 Revision: 201002
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diff changeset
   191
		{
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   192
		TStringIdMap* map=imp->iRollbackMapList[0];			
e4d67989cc36 Revision: 201002
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diff changeset
   193
		TInt index=imp->iStringMapList.FindInUnsignedKeyOrder(*map);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff changeset
   194
		imp->iRollbackMapList.Remove(0);
e4d67989cc36 Revision: 201002
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diff changeset
   195
		if (index!=KErrNotFound)
e4d67989cc36 Revision: 201002
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diff changeset
   196
			{
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diff changeset
   197
			imp->iStringMapList.Remove(index);			
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diff changeset
   198
			}		
e4d67989cc36 Revision: 201002
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diff changeset
   199
		index=imp->iStringMapListReverse.FindInUnsignedKeyOrder(*map);
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diff changeset
   200
		if (index!=KErrNotFound)
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diff changeset
   201
			{
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diff changeset
   202
			for (TInt count=index;count<imp->iStringMapListReverse.Count();++count)
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   203
				{
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   204
				if (imp->iStringMapListReverse[count].iTargetTableVal==map->iTargetTableVal && imp->iStringMapListReverse[count].iSourceTableVal==map->iSourceTableVal)
e4d67989cc36 Revision: 201002
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diff changeset
   205
					{				
e4d67989cc36 Revision: 201002
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diff changeset
   206
					imp->iStringMapListReverse.Remove(index);
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diff changeset
   207
					}
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diff changeset
   208
				}
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diff changeset
   209
			}
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   210
		}
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diff changeset
   211
	}
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   212
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   213
void CStringPoolImplementation::AddTableL(const TStringTable& aTable)
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diff changeset
   214
	{
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   215
	for (TInt count=0;count<iTablePtrs.Count();++count)	// check for adding the same table twice
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parents:
diff changeset
   216
		{
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   217
		if (iTablePtrs[count]==&aTable)
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   218
			{
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   219
			return;
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   220
			}
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parents:
diff changeset
   221
		}
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   222
	User::LeaveIfError(iTablePtrs.Append(&aTable));	// Add the pointer to this table so we can keep track of the Table IDs. The table ID is the index in this array
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   223
	//Is the table Case Sensitive or not?
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   224
	TBool (*genericValFromIndex)(TInt, TUint16);
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   225
	if (aTable.iCaseSensitive==1)
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		genericValFromIndex = StringUtils::ValFromIndex;
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   227
	else
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   228
		genericValFromIndex = StringUtils::ValFromIndexF;
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diff changeset
   229
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	CArrayFixSeg<RStringTokenEither>** hashTableToUse =
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   231
	aTable.iCaseSensitive ? iCSHashTable :iCIHashTable ;	
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   232
	TInt cleanupCounter=0;
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   233
	for (TUint i = 0; i < aTable.iCount; ++i)
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   234
		{
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   235
		const TStLitC8<1>* string=reinterpret_cast<const TStLitC8<1>* >(aTable.iTable[i]);		
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   236
		
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		// Try to find the string in memory, maybe as a dynamic string or as a member of an another table  
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   238
		RStringTokenEither token=FindDes(*string, !aTable.iCaseSensitive);
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   239
		if (!token.IsNull())
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   240
			{
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   241
			TStringIdMap map;			
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   242
			map.iSourceTableVal=StringUtils::ValFromIndex(i, (TInt16)(iTablePtrs.Count()-1),aTable.iCaseSensitive);
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   243
			map.iTargetTableVal=token.iVal;
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   244
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   245
			// Put on cleanup stack
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   246
			User::LeaveIfError(iRollbackMapList.Append(&map));
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   247
			TCleanupItem cleanup(CleanupIdMap, this);
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   248
			CleanupStack::PushL(cleanup);
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   249
			++cleanupCounter;
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   250
			
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   251
			User::LeaveIfError(iStringMapList.InsertInUnsignedKeyOrder(map));
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   252
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   253
			// Check if this is a link to a dynamic string
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   254
			if (!StringUtils::IsTableEntry(token.iVal))
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   255
				{
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   256
				CStringPoolNode* node = StringUtils::NodePtr(token.iVal);
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   257
				node->iRefcount=KMarkedForNoDeleted; // Make sure this string never gets deleted
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   258
				}
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   259
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   260
			// Now store the reverse array						
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   261
			User::LeaveIfError(iStringMapListReverse.InsertInUnsignedKeyOrderAllowRepeats(map));
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   262
			}
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   263
		else
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   264
			{
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   265
			TUint8 hash = static_cast<TUint8>(Hash(*string));
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   266
			CArrayFixSeg<RStringTokenEither>* collisionList = hashTableToUse[hash];
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   267
			if ( !collisionList )
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   268
				//HashTableToUse now is used as list of all entry with the same hash
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   269
				collisionList = hashTableToUse[hash] = 
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   270
				new (ELeave) CArrayFixSeg<RStringTokenEither>( 2 );
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   271
			RStringTokenEither s;
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   272
			s.iVal = genericValFromIndex(i, (TInt16)(iTablePtrs.Count()-1));
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   273
			
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   274
			__LOG2(_L8("Table entry being added with hash %d, val %d"), hash, s.iVal);
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   275
			__LOG(*reinterpret_cast<const TStLitC8<1>* >(aTable.iTable[i]));
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   276
			// Put on cleanup stack
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   277
			if (aTable.iCaseSensitive==1)
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   278
				{
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   279
				User::LeaveIfError(iRollbackHashListCS.Append(&s));
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   280
				TCleanupItem cleanup(CleanupHashCS, this);
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   281
				CleanupStack::PushL(cleanup);
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   282
				}
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   283
			else
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   284
				{
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   285
				User::LeaveIfError(iRollbackHashListCI.Append(&s));
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   286
				TCleanupItem cleanup(CleanupHashCI, this);
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   287
				CleanupStack::PushL(cleanup);
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   288
				}
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   289
			
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   290
			++cleanupCounter;
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   291
			collisionList->AppendL(s);
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   292
			}
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   293
		}	
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   294
	CleanupStack::Pop(cleanupCounter);
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   295
	iRollbackMapList.Reset();
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   296
	iRollbackHashListCS.Reset();
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   297
	iRollbackHashListCI.Reset();
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   298
	}
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   299
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   300
// Find FirstVal given duplicate val
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   301
TInt32 CStringPoolImplementation::FindFirstValFromDuplicate(TInt32 aDuplicateVal) const 
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   302
	{
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   303
	TStringIdMap map;
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   304
	map.iSourceTableVal=aDuplicateVal;	
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parents:
diff changeset
   305
	TInt index=iStringMapList.FindInUnsignedKeyOrder(map);
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parents:
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   306
	if (index!=KErrNotFound)		
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   307
		return iStringMapList[index].iTargetTableVal;
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   308
	else
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   309
		return KErrNotFound;
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   310
	}
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parents:
diff changeset
   311
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diff changeset
   312
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diff changeset
   313
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   314
// Find table index Val given first val & table UID
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   315
TInt CStringPoolImplementation::FindTableIndexFromFirstVal(TInt32 aFirstVal, TInt aTableUid) const
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parents:
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   316
	{
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   317
	TStringIdMap map;
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parents:
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   318
	map.iTargetTableVal=aFirstVal;		
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parents:
diff changeset
   319
	TInt index=iStringMapListReverse.FindInUnsignedKeyOrder(map);
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   320
	if (KErrNotFound==index)
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diff changeset
   321
		return KErrNotFound;
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parents:
diff changeset
   322
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diff changeset
   323
	for (TInt count=index;count<iStringMapListReverse.Count();++count)
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parents:
diff changeset
   324
		{
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   325
		if (iStringMapListReverse[count].iTargetTableVal==aFirstVal && StringUtils::TableUid(iStringMapListReverse[count].iSourceTableVal)==aTableUid)
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parents:
diff changeset
   326
			{
e4d67989cc36 Revision: 201002
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diff changeset
   327
			return StringUtils::TableIndex(iStringMapListReverse[count].iSourceTableVal);
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parents:
diff changeset
   328
			}
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diff changeset
   329
		}	
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diff changeset
   330
		return KErrNotFound;
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parents:
diff changeset
   331
	}
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parents:
diff changeset
   332
e4d67989cc36 Revision: 201002
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parents:
diff changeset
   333
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diff changeset
   334
// Find the UId for a given table
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parents:
diff changeset
   335
TInt16 CStringPoolImplementation::TableUid(const TStringTable& aTable) const
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   336
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   337
	for (TInt count=0; count<iTablePtrs.Count(); ++count)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   338
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   339
		if (iTablePtrs[count]==&aTable)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   340
			return (TInt16)count;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   341
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   342
	return KErrNotFound;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   343
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   344
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   345
// Find a reference to the table that first added the  string represented by aVal to the pool 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   346
const TStringTable& CStringPoolImplementation::TableRef(TInt32 aVal) const
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   348
	__ASSERT_DEBUG(aVal!=0, StringPoolPanic::Panic(StringPoolPanic::EIllegalUseOfNullString));
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   349
	TInt16 tableUid=(TInt16)(aVal>>20);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   350
	const TStringTable* theTableRef=(iTablePtrs[tableUid]);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   351
	return  *theTableRef;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   352
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   353
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   354
// Find the descriptor for a given table and index
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
const TDesC8& CStringPoolImplementation::TableLookup(TInt aIndex, TInt aTableUid) const
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   356
	{	
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   357
	return *reinterpret_cast<const TStLitC8<1>*>(iTablePtrs[aTableUid]->iTable[aIndex]);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
// Lookup with allocating
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
//
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
RStringTokenEither 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
CStringPoolImplementation::OpenL( const TDesC8& aAttributeName,
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
								  TBool aCaseInsensitive)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
	// lookup the attribute
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
	RStringTokenEither s(FindDes( aAttributeName , aCaseInsensitive));
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
	if (!s.IsNull())
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
		if (!StringUtils::IsTableEntry(s.iVal))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
			{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
			CStringPoolNode* node = StringUtils::NodePtr(s.iVal);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
			if (KMarkedForNoDeleted!=node->iRefcount)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
				node->iRefcount++;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
			__LOG1(_L8("String copied (during open). Count is now %d"), node->iRefcount);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
			__LOG(*node->iDes);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
			}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
		return s;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
	
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
	// create a new node at the end of the appropriate array
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
	CStringPoolNode* newnode = new (ELeave) CStringPoolNode();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
	CleanupStack::PushL( newnode );
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
	newnode->iDes = aAttributeName.AllocL();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
	newnode->iRefcount = 1;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
	TInt hash = Hash( aAttributeName );
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
	CArrayFixSeg<RStringTokenEither>** hashTableToUse = 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
		aCaseInsensitive ? iCIHashTable : iCSHashTable;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
	__LOG2(_L8("Newly added with hash value %d, node val 0x%x\n"), hash, newnode)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
	__LOG(aAttributeName);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
	newnode->iHash = static_cast<TUint8>(hash);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
	CArrayFixSeg<RStringTokenEither>* collisionList = hashTableToUse[hash];
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
	if ( !collisionList )
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
		collisionList = hashTableToUse[hash] = new (ELeave) CArrayFixSeg<RStringTokenEither>( 2 );
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
	s.iVal = reinterpret_cast<TUint32>(newnode);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
	if (aCaseInsensitive)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
		s.iVal += 2;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
	collisionList->AppendL(s);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
	CleanupStack::Pop(); // newnode
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
	return s;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
void CStringPoolImplementation::Close(RStringTokenEither aString)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
	if (StringUtils::IsTableEntry(aString.iVal))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
		return;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
	CStringPoolNode* node = StringUtils::NodePtr(aString.iVal);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
	if (KMarkedForNoDeleted == node->iRefcount)	// -1 means a non-expirable string
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
		return;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
	if (--node->iRefcount == 0)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
		//this is  the last reference of this string
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
		CArrayFixSeg<RStringTokenEither>** hashTableToUse = 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
		aString.iVal & 2 ? iCIHashTable : iCSHashTable;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
		// Delete the node and delete the entry in the relevant collision list 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
		CArrayFixSeg<RStringTokenEither>* collisionList = hashTableToUse[node->iHash];
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
		TInt count = collisionList->Count();		
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
		for (TInt i = 0; i < count; i++)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
			{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
			if (collisionList->At(i) == aString)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
				{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
				// Log the fact that a string reference is about to die...
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
				__LOG1(_L8("Removing string with hash value %d\n"), node->iHash)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
				__LOG(node->iDes->Des());
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
				collisionList->Delete(i);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
				break;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
				}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
			}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
		delete node;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
	else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
		__LOG1(_L8("String closed. Count is now %d"), 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
			   node->iRefcount);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
		__LOG(node->iDes->Des());
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
void CStringPoolImplementation::IncrementCount(RStringTokenEither aString)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
	if (StringUtils::IsTableEntry(aString.iVal))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
		return;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
	CStringPoolNode* node = StringUtils::NodePtr(aString.iVal);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
	if (KMarkedForNoDeleted!=node->iRefcount)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
		node->iRefcount++;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
	__LOG1(_L8("String copied. Count is now %d"), node->iRefcount);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
	__LOG(*node->iDes);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
// Very simple case-sensitive comparison. We can assume that the
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
// strings are the same length, and we only care if the strings are
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
// the same. (Unlike normal comparison functions that also tell you
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
// which one is 'smaller')
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
TBool CStringPoolImplementation::CompareCS(const TDesC8& s1, const TDesC8& s2)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
	const TUint8* ptr1 = s1.Ptr();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
	const TUint8* ptr2 = s2.Ptr();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
	const TUint8* stop = &ptr1[s1.Length()];
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
	for (; ptr1 < stop; ptr1++,ptr2++)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
		if (*ptr1 != *ptr2)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
			return EFalse;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
	return ETrue;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
// Note that the hash function must generate the same hash values for
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
// strings that differ by case. If changing the algorithm here make
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
// sure this is still true.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
TBool CStringPoolImplementation::CompareCI(const TDesC8& s1, const TDesC8& s2)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
	const TUint8* ptr1 = s1.Ptr();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
	const TUint8* ptr2 = s2.Ptr();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
	const TUint8* stop = &ptr1[s1.Length()];
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
	for (; ptr1 < stop; ptr1++,ptr2++)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
		if (*ptr1 != *ptr2)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
			{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
			// They're not exactly the same; see if they differ only
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
			// by case. If one character is a letter, we can do a
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
			// comparison ignoring bit 5 in both cases. If that
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
			// matches, they are the same.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
			if (!((*ptr1 & KCaseInsensitive) == (*ptr2 & KCaseInsensitive) &&
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
				  (*ptr1 >= 'A' && *ptr1 <= 'Z' || 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
				   *ptr1 >= 'a' && *ptr1 <= 'z')))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
				return EFalse;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
			}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
	return ETrue;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
// Find the given descriptor in the hash table
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
//
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
RStringTokenEither 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
CStringPoolImplementation::FindDes( const TDesC8& aAttributeName, TBool aCaseInsensitive) 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   505
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   506
	CArrayFixSeg<RStringTokenEither>** hashTableToUse = 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
		aCaseInsensitive ? iCIHashTable : iCSHashTable;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
	CArrayFixSeg<RStringTokenEither>* collisionList =hashTableToUse[Hash(aAttributeName)];
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
	RStringPool pool;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
	TBool (*compareFunction)(const TDesC8&, const TDesC8&);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
	if (aCaseInsensitive)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
		compareFunction = CompareCI;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
	else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   514
		compareFunction = CompareCS;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
	pool.iImplementation = this;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
	if ( collisionList )
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   517
		{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
		TInt length=aAttributeName.Length();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
		TInt count = collisionList->Count();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
		for ( TInt i = 0; i < count; i++ )
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
			{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
			RStringTokenEither token = collisionList->At(i);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
			RStringEither s(this, token);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
			const TDesC8& string = s.DesC();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
			if ( string.Length()==length && 
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
				 (*compareFunction)(aAttributeName, string))
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
				return token;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
			}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
		}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
	return RStringTokenEither();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
// Generate a hash value
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   535
//
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   536
TUint CStringPoolImplementation::Hash( const TDesC8& aDes ) const
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
	// We ignore bit 5, which is a crude way of making the hash case
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
	// insensitive. This means that things that might differ only by
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
	// case end up in the same bucket, and we can then worry about
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   541
	// whether they're really the same later.
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   542
	TInt len=aDes.Length();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   543
	TUint hash = 0;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
	const TUint8* ptr=aDes.Ptr();
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
	for ( TInt i = 0; i < len; i++ )
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
		hash = 131*hash + (*ptr++ & KCaseInsensitive);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
	return hash % KHashModulo;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
TInt StringUtils::ValFromIndex(TInt aIndex, TUint16 aTableId)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
	return (aTableId << 20) + (aIndex << 2) + 1;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
TInt StringUtils::ValFromIndexF(TInt aIndex, TUint16 aTableId)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
	return (aTableId << 20) + (aIndex << 2) + 3;
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
TInt StringUtils::ValFromIndex(TInt aIndex, TUint16 aTableId, TBool aCaseSensitive)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
	if (aCaseSensitive)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
		return ValFromIndex(aIndex, aTableId);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
	else
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   565
		return ValFromIndexF(aIndex, aTableId);
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   566
	}
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   567
void  CStringPoolImplementation::AddCallBackL( MStringPoolCloseCallBack& aCallBack)
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   568
	{
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   569
	User::LeaveIfError(iCallBacks.Append(&aCallBack));
e4d67989cc36 Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   570
	}