javauis/javalegacyutils/src/RJString.cpp
branchRCL_3
changeset 19 04becd199f91
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/javalegacyutils/src/RJString.cpp	Tue Apr 27 16:30:29 2010 +0300
@@ -0,0 +1,51 @@
+/*
+* Copyright (c) 1999-2000 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 "jutils.h"
+
+/**
+ * Constuctor taking a Java JNI string and converting it to an EPOC TPtrC.
+ */
+EXPORT_C RJString::RJString(JNIEnv& aJni, jstring aString)
+        : iJni(aJni), iString(aString)
+{
+    // Potential for a string to be NULL, but NULL cannot be passed into
+    // JNI methods, so must check. If string is NULL, will result in empty string
+    if (iString != NULL)
+    {
+        const jchar* ptr = aJni.GetStringChars(iString, NULL);
+        const jint   len = aJni.GetStringLength(iString);
+        if (ptr)
+        {
+            Set(ptr, len);
+        }
+    }
+}
+
+
+
+/**
+ * Frees up the JNI string resources, if they need to be freed.
+ */
+EXPORT_C RJString::~RJString()
+{
+    if (iString != NULL)
+    {
+        iJni.ReleaseStringChars(iString, this->Ptr());
+    }
+}