javauis/javalegacyutils/src/RJString.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 16:30:29 +0300
branchRCL_3
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/*
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* Copyright (c) 1999-2000 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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*/
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#include "jutils.h"
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/**
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 * Constuctor taking a Java JNI string and converting it to an EPOC TPtrC.
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 */
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EXPORT_C RJString::RJString(JNIEnv& aJni, jstring aString)
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        : iJni(aJni), iString(aString)
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{
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    // Potential for a string to be NULL, but NULL cannot be passed into
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    // JNI methods, so must check. If string is NULL, will result in empty string
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    if (iString != NULL)
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    {
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        const jchar* ptr = aJni.GetStringChars(iString, NULL);
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        const jint   len = aJni.GetStringLength(iString);
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        if (ptr)
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        {
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            Set(ptr, len);
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        }
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    }
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}
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/**
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 * Frees up the JNI string resources, if they need to be freed.
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 */
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EXPORT_C RJString::~RJString()
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{
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    if (iString != NULL)
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    {
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        iJni.ReleaseStringChars(iString, this->Ptr());
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    }
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}