/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*

*/

#include "mmapiutils.h"

#include "s60commonutils.h"

using namespace java::util;

enum TJavaArrayPanic

{

    EBadOffsetIntoJavaArray,

    EWritingOverEndOfJavaArray,

    EBadOffsetIntoJavaArrayForRead,

    EReadingOverEndOfJavaArray,

};

/**

 * Copies data from the native to the Java array.

 * @return The number of bytes copied.

 */

TInt MMAPIUtils::CopyToJava(JNIEnv& aJni, const TDesC8& aNativeBuffer,

                                     jbyteArray aJavaBuffer, TInt aOffset, TInt aLength)

{

    __ASSERT_DEBUG(aOffset <= aJni.GetArrayLength(aJavaBuffer),

                   User::Panic(_L("ArrayUtils"), EBadOffsetIntoJavaArray));

    __ASSERT_DEBUG(aLength <= aJni.GetArrayLength(aJavaBuffer) - aOffset,

                   User::Panic(_L("ArrayUtils"), EWritingOverEndOfJavaArray));

    TInt nativeBufferLength = aNativeBuffer.Length();

    TInt length = (nativeBufferLength < aLength) ? nativeBufferLength : aLength;

    TUint8* nativeBufferPtr = const_cast<TUint8*>(aNativeBuffer.Ptr());

    jbyte* jNativeBufferPtr = reinterpret_cast<jbyte*>(nativeBufferPtr);

    aJni.SetByteArrayRegion(aJavaBuffer, aOffset, length, jNativeBufferPtr);

    return length;

}

jobjectArray MMAPIUtils::CopyToNewJavaStringArrayL(JNIEnv& aJni, const CDesCArray& aNativeArray)

{

    jclass stringClass = aJni.FindClass("java/lang/String");

    User::LeaveIfNull(stringClass);

    //

    jobjectArray result = aJni.NewObjectArray(aNativeArray.Count(), stringClass, NULL);

    if (result != NULL)

    {

        TPtrC item;

        for (int i=0; i<aNativeArray.Count(); ++i)

        {

            item.Set(aNativeArray[i]);

            AddToJavaStringArrayL(aJni, result, i, item);

        }

    }

    return result;

}

void MMAPIUtils::AddToJavaStringArrayL(JNIEnv& aJni, jobjectArray& aContainer, TInt aPosition, const TDesC& aString)

{

    jstring javaString = S60CommonUtils::NativeToJavaString(aJni, aString);

    User::LeaveIfNull(javaString);

    //

    aJni.SetObjectArrayElement(aContainer, aPosition, javaString);

    aJni.DeleteLocalRef(javaString);

}