javaextensions/satsa/pki/src.s60/arrayutils.cpp
branchRCL_3
changeset 19 04becd199f91
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javaextensions/satsa/pki/src.s60/arrayutils.cpp	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,82 @@
+/*
+* Copyright (c) 2008 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:  ?Description
+*
+*/
+
+
+#include <e32def.h>
+#include <e32cmn.h>
+#include <e32std.h>
+
+#include "jutils.h"
+#include "jni.h"
+
+
+
+
+enum TJavaArrayPanic
+{
+    EBadOffsetIntoJavaArray,
+    EWritingOverEndOfJavaArray,
+    EBadOffsetIntoJavaArrayForRead,
+    EReadingOverEndOfJavaArray,
+};
+
+
+
+/**
+* Accesses the Java array and copies its data into the native descriptor.
+* @param aJni The JNI environment.
+* @param aJavaBuffer The Java buffer to copy data from.
+* @param aOffset Start of data in Java buffer to copy. This is assumed to be valid.
+* @param aLength Amount of data to copy. This is assumed to be valid.
+* @param aNativeBuffer Target for data. This is assumed to be long enough.
+* @returns An error code.
+*/
+OS_EXPORT  TInt ArrayUtils::CopyToNative(JNIEnv& aJni, jbyteArray aJavaBuffer,
+        TInt aOffset, TInt aLength, TDes8& aNativeBuffer)
+{
+
+    aNativeBuffer.SetLength(aLength);
+    TUint8* nativeBufferPtr = const_cast<TUint8*>(aNativeBuffer.Ptr());
+    jbyte* jNativeBufferPtr = reinterpret_cast<jbyte*>(nativeBufferPtr);
+    aJni.GetByteArrayRegion(aJavaBuffer, aOffset, aLength, jNativeBufferPtr);
+    return KErrNone;
+}
+
+
+
+/**
+* Copies data from the native to the Java array.
+* @return The number of bytes copied.
+*/
+OS_EXPORT  TInt ArrayUtils::CopyToJava(JNIEnv& aJni, const TDesC8& aNativeBuffer,
+                                       jbyteArray aJavaBuffer, TInt aOffset, TInt aLength)
+{
+
+    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;
+}
+
+
+
+
+
+
+