genericopenlibs/cstdlib/LCHAR/CASECMP.CPP
author andy simpson <andrews@symbian.org>
Fri, 17 Sep 2010 17:50:04 +0100
branchRCL_3
changeset 61 b670675990af
parent 0 e4d67989cc36
permissions -rw-r--r--
Merge Bug 2603 and Bug 3123 plus move exports to rom/bld.inf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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// Copyright (c) 1997-2009 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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// Implement case-insensitive comparison using the full folded comparison
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// functions of E32
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// 
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//
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#include <e32std.h>
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#include <string.h>
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/**
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Compares the null-terminated strings left and right and returns an integer 
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greater than,equal to, or less than zero (0), accordingly as left 
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is lexicographically greater than,equal to, or less than right after
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translation of each corresponding character to lowercase.
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@return an integer greater than, equal to, or less than zero (0),
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accordingly as the string left is greater than, equal to,
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or less than the string right.
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@param left The first string to compare.
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@param right The second string to compare.
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*/
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extern "C" EXPORT_C int strcasecmp (const char *left, const char *right)
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	{
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	TPtrC8 Left((const TText8*)left);
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	TPtrC8 Right((const TText8*)right);
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	return Left.CompareF(Right);
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	}
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extern "C" EXPORT_C int strncasecmp (const char *left, const char *right, size_t length)
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	{
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	TUint leftlength=strlen(left);
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	TUint rightlength=strlen(right);
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	// The length parameter is the maximum amount of the string to be searched,
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	// so truncate the descriptors appropriately
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	if (leftlength>length)
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		leftlength=length;
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	if (rightlength>length)
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		rightlength=length;
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	TPtrC8 Left((const TText8*)left,leftlength);
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	TPtrC8 Right((const TText8*)right,rightlength);
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	return Left.CompareF(Right);
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	}