| /* |
| * Copyright 2002-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * imitations under the License. |
| */ |
| |
| /* |
| * XSEC |
| * |
| * XSECCanon := Base (abstract) class for canonicalisation objects |
| * |
| * |
| * Author(s): Berin Lautenbach |
| * |
| * $Id$ |
| */ |
| |
| // XSEC includes |
| #include <xsec/framework/XSECDefs.hpp> |
| #include <xsec/utils/XSECSafeBuffer.hpp> |
| |
| XSEC_DECLARE_XERCES_CLASS(DOMNode); |
| XSEC_DECLARE_XERCES_CLASS(DOMDocument); |
| |
| // -------------------------------------------------------------------------------- |
| // Defines |
| // -------------------------------------------------------------------------------- |
| |
| #define XSECCANNON_BUFFER_START_SIZE 8192 /* Default size for the outBuffer */ |
| |
| |
| // -------------------------------------------------------------------------------- |
| // XSECCanon Virtual Class definition |
| // -------------------------------------------------------------------------------- |
| |
| // Most of the interface work is done within this class. However the actual |
| // processing is done via the processNextNode virtual function that must be |
| // implemented by all children classes. |
| |
| class CANON_EXPORT XSECCanon { |
| |
| protected: |
| |
| // Data structures |
| |
| XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument * mp_doc; // Xerces DOM Node that defines the document |
| XERCES_CPP_NAMESPACE_QUALIFIER DOMNode * mp_startNode, // Node to start processing from |
| *mp_nextNode; // Next Node to be processeed |
| safeBuffer m_buffer; // Buffer holding parsed output |
| int m_bufferLength, // Length of input currently in buffer |
| m_bufferPoint; // Next "character" to copy out |
| bool m_allNodesDone; // Have we completed? |
| |
| |
| public: |
| |
| // Constructors |
| |
| XSECCanon(); |
| XSECCanon(XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *newDoc); |
| XSECCanon( |
| XERCES_CPP_NAMESPACE_QUALIFIER DOMDocument *newDoc, |
| XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *newStartNode); |
| |
| // Destructors |
| |
| virtual ~XSECCanon(); |
| |
| // Public Methods |
| |
| // outputBuffer is used by all canonicalisers to output the next numBytes bytes of |
| // canonicalised XML to the nominated buffer |
| |
| int outputBuffer(unsigned char *outBuffer, int numBytes); |
| |
| // setStartNode sets the starting point for the output if it is a sub-document |
| // that needs canonicalisation and we want to re-start |
| |
| bool setStartNode(XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *newStartNode); |
| |
| protected: |
| |
| // processNextNode is the pure virtual function that must be implemented by all canons |
| |
| virtual int processNextNode() = 0; |
| |
| }; |
| |