javaextensions/iapinfo/src.s60/stringbuffer.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 00:10:53 +0300
changeset 79 2f468c1958d0
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permissions -rw-r--r--
Revision: v2.2.15 Kit: 201039
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/*
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* Copyright (c) 2008 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:  stringbuffer class implementation
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 *
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*/
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#include "stringbuffer.h"
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//////////////////////////////////////////////////////////////////////////////
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//
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// NewL Method to create a new StringBuffer object
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// @return StringBuffer*
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//
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//////////////////////////////////////////////////////////////////////////////
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StringBuffer* StringBuffer::NewL()
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{
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    StringBuffer* self = new(ELeave) StringBuffer;
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Constructor Method
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//
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//////////////////////////////////////////////////////////////////////////////
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StringBuffer::StringBuffer()
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{
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// ConstructL to create the String object which stores the data
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//
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//////////////////////////////////////////////////////////////////////////////
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void StringBuffer::ConstructL()
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{
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    String = HBufC::NewL(KInitialSize);
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// AppendText Method to append the content of an HBufC object to the
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// StringBuffer's content
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// @param HBufC*
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//
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//////////////////////////////////////////////////////////////////////////////
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void StringBuffer::Append(HBufC* what)
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{
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    TInt _size = what->Length();
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    if ((String->Des().MaxLength() - String->Size()) < _size)
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    {
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        String = String->ReAlloc(String->Des().MaxLength() + 2 * _size);
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    }
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    String->Des().Append(what->Des());
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// GetString Method to get the content of the StringBuffer
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// @return HBufC *
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//
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//////////////////////////////////////////////////////////////////////////////
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HBufC* StringBuffer::GetString()
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{
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    return String;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Append Method to append the content of a TDesC object to the
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//  StringBuffer's content
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// @param TDesC
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//
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//////////////////////////////////////////////////////////////////////////////
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void StringBuffer::Append(const TDesC &what)
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{
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    TInt _size = what.Length();
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    if ((String->Des().MaxLength() - String->Size()) < _size)
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    {
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        String = String->ReAlloc(String->Des().MaxLength() + 2 * _size);
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    }
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    String->Des().Append(what);
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Append Method to append a TInt object to the StringBuffer's content
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// @param TInt
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//
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//////////////////////////////////////////////////////////////////////////////
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void StringBuffer::Append(TInt aWhat)
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{
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    TBufC<KBUFMAX> Temp;
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    Temp.Des().AppendNum(aWhat);
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    TInt _size = Temp.Des().Length();
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    if ((String->Des().MaxLength() - String->Size()) < _size)
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    {
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        String = String->ReAlloc(String->Des().MaxLength() + 2 * _size);
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    }
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    String->Des().Append(Temp);
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// CreateJavaString Method to create java string from an HBufC
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// @param aJNI JNIEnv*
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// @param aString HBufC
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// @return jstring
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//
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//////////////////////////////////////////////////////////////////////////////
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jstring StringBuffer::CreateJavaString(JNIEnv* aJNI, const HBufC* aString)
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{
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    TPtrC16 buf;
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    jstring str = aJNI->NewString(aString->Ptr(), aString->Length());
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    return str;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// CreateHBufCFromJavaStringLC Method to cretae HBufC from a java string
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// @param JNIEnv*
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// @param jstring aString
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// @return HBufC*
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//
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//////////////////////////////////////////////////////////////////////////////
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HBufC* StringBuffer::CreateHBufCFromJavaStringLC(JNIEnv* aJNI, jstring aString)
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{
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    HBufC16* Str = HBufC16::NewL(aJNI->GetStringLength(aString));
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    CleanupStack::PushL(Str);
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    const TUint16* temp = aJNI->GetStringChars(aString, 0);
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    Str->Des() = temp;
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    aJNI->ReleaseStringChars(aString, temp);
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    return Str;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// ToJavaString Method to create java string from the content of the
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// StringBuffer.
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// @param JNIEnv
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// @return jstring
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//
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//////////////////////////////////////////////////////////////////////////////
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jstring StringBuffer::ToJavaString(JNIEnv* aJNI)
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{
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    jstring str = aJNI->NewString(String->Ptr(), String->Length());
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    return str;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Destructor
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//
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//////////////////////////////////////////////////////////////////////////////
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StringBuffer::~StringBuffer()
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{
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    delete String;
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    String = NULL;
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}