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// This code contains NVIDIA Confidential Information and is disclosed to you
// under a form of NVIDIA software license agreement provided separately to you.
//
// Notice
// NVIDIA Corporation and its licensors retain all intellectual property and
// proprietary rights in and to this software and related documentation and
// any modifications thereto. Any use, reproduction, disclosure, or
// distribution of this software and related documentation without an express
// license agreement from NVIDIA Corporation is strictly prohibited.
//
// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
//
// Information and code furnished is believed to be accurate and reliable.
// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
// information or for any infringement of patents or other rights of third parties that may
// result from its use. No license is granted by implication or otherwise under any patent
// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
// This code supersedes and replaces all information previously supplied.
// NVIDIA Corporation products are not authorized for use as critical
// components in life support devices or systems without express written approval of
// NVIDIA Corporation.
//
// Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PX_XML_READER_H
#define PX_XML_READER_H
#include "foundation/PxSimpleTypes.h"
#include "extensions/PxRepXSimpleType.h"
namespace physx {
namespace Sn { struct XmlNode; }
/**
* Reader used to read data out of the repx format.
*/
class XmlReader
{
protected:
virtual ~XmlReader(){}
public:
/** Read a key-value pair out of the database */
virtual bool read( const char* inName, const char*& outData ) = 0;
/** Read an object id out of the database */
virtual bool read( const char* inName, PxSerialObjectId& outId ) = 0;
/** Goto a child element by name. That child becomes this reader's context */
virtual bool gotoChild( const char* inName ) = 0;
/** Goto the first child regardless of name */
virtual bool gotoFirstChild() = 0;
/** Goto the next sibling regardless of name */
virtual bool gotoNextSibling() = 0;
/** Count all children of the current object */
virtual PxU32 countChildren() = 0;
/** Get the name of the current item */
virtual const char* getCurrentItemName() = 0;
/** Get the value of the current item */
virtual const char* getCurrentItemValue() = 0;
/** Leave the current child */
virtual bool leaveChild() = 0;
/** Get reader for the parental object */
virtual XmlReader* getParentReader() = 0;
/**
* Ensures we don't leave the reader in an odd state
* due to not leaving a given child
*/
virtual void pushCurrentContext() = 0;
/** Pop the current context back to where it during push*/
virtual void popCurrentContext() = 0;
};
//Used when upgrading a repx collection
class XmlReaderWriter : public XmlReader
{
public:
//Clears the stack of nodes (push/pop current node reset)
//and sets the current node to inNode.
virtual void setNode( Sn::XmlNode& node ) = 0;
//If the child exists, add it.
//the either way goto that child.
virtual void addOrGotoChild( const char* name ) = 0;
//Value is copied into the collection, inValue has no further references
//to it.
virtual void setCurrentItemValue( const char* value ) = 0;
//Removes the child but does not release the char* name or char* data ptrs.
//Those pointers are never released and are shared among collections.
//Thus copying nodes is cheap and safe.
virtual bool removeChild( const char* name ) = 0;
virtual void release() = 0;
bool renameProperty( const char* oldName, const char* newName )
{
if ( gotoChild( oldName ) )
{
const char* value = getCurrentItemValue();
leaveChild();
removeChild( oldName );
addOrGotoChild( newName );
setCurrentItemValue( value );
leaveChild();
return true;
}
return false;
}
bool readAndRemoveProperty( const char* name, const char*& outValue )
{
bool retval = read( name, outValue );
if ( retval ) removeChild( name );
return retval;
}
bool writePropertyIfNotEmpty( const char* name, const char* value )
{
if ( value && *value )
{
addOrGotoChild( name );
setCurrentItemValue( value );
leaveChild();
return true;
}
return false;
}
};
}
#endif
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