Keep only base/extractor.[cc|h].

common/xml_parser.h

-// Copyright 2009-2010 Google Inc.
-//
-// 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
-// limitations under the License.
-// ========================================================================
-//
-// Defines the Goopdate XML parser. The clients of this class are
-// UpdateRequest and UpdateResponse.
-
-#ifndef OMAHA_COMMON_XML_PARSER_H_
-#define OMAHA_COMMON_XML_PARSER_H_
-
-#include <windows.h>
-#include <objbase.h>
-#include <msxml2.h>
-#include <atlbase.h>
-#include <atlstr.h>
-#include <map>
-#include <vector>
-#include "base/basictypes.h"
-#include "base/object_factory.h"
-#include "omaha/common/const_goopdate.h"
-#include "omaha/common/update_request.h"
-#include "omaha/common/update_response.h"
-
-namespace omaha {
-
-namespace xml {
-
-class ElementHandler;
-
-CString ConvertProcessorArchitectureToString(DWORD processor_architecture);
-
-// Public static methods instantiate a temporary instance of this class, which
-// then parses the specified document. This avoids reusing instances of the
-// parser and dealing with stale and dirty data.
-class XmlParser {
- public:
-  // Parses the update response buffer and fills in the UpdateResponse. In case
-  // of errors, the UpdateResponse object may contain partial information up
-  // to the point of the parsing error.
-  // TODO(omaha): since the xml docs are strings we could use a CString as
-  // an input parameter, no reason why this should be a buffer.
-  static HRESULT DeserializeResponse(const std::vector<uint8>& buffer,
-                                     UpdateResponse* update_response);
-
-  // Generates the update request from the request node.
-  static HRESULT SerializeRequest(const UpdateRequest& update_request,
-                                  CString* buffer);
-
- private:
-  typedef Factory<ElementHandler, CString> ElementHandlerFactory;
-
-  XmlParser();
-  void InitializeElementHandlers();
-  void InitializeLegacyElementHandlers();
-
-  // Builds an XML object model corresponding to an xml request.
-  HRESULT BuildDom(const request::Request& request);
-
-  // Builds the 'request' element.
-  HRESULT BuildRequestElement();
-
-  // Creates the 'os' element.
-  HRESULT BuildOsElement(IXMLDOMNode* parent_node);
-
-  // Creates the 'app' element. This is usually a sequence of elements.
-  HRESULT BuildAppElement(IXMLDOMNode* parent_node);
-
-  // Creates the 'updatecheck' element for an application.
-  HRESULT BuildUpdateCheckElement(const request::App& app,
-                                  IXMLDOMNode* parent_node);
-
-  // Creates Ping aka 'event' elements for an application.
-  HRESULT BuildPingRequestElement(const request::App& app,
-                                  IXMLDOMNode* parent_node);
-
-  // Creates the 'data' element for an application.
-  HRESULT BuildDataElement(const request::App& app,
-                           IXMLDOMNode* parent_node);
-
-  // Creates the 'didrun' aka 'active' aka 'ping' element for an application.
-  HRESULT BuildDidRunElement(const request::App& app,
-                             IXMLDOMNode* parent_node);
-
-  // Serializes the DOM into a string.
-  HRESULT GetXml(CString* buffer);
-
-  // Creates an element in the Update2 xml namespace.
-  HRESULT CreateElementNode(const TCHAR* name,
-                            const TCHAR* value,
-                            IXMLDOMNode** element);
-
-  // Starts parsing of the xml document.
-  HRESULT Parse();
-
-  // Does a DFS traversal of the dom.
-  HRESULT TraverseDOM(IXMLDOMNode* node);
-
-  // Handles a single node during traversal.
-  HRESULT VisitElement(IXMLDOMNode* node);
-
-  // The current xml document.
-  CComPtr<IXMLDOMDocument> document_;
-
-  // The xml request being serialized. Not owned by this class.
-  const request::Request* request_;
-
-  // The xml response being deserialized. Not owned by this class.
-  response::Response* response_;
-
-  ElementHandlerFactory element_handler_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(XmlParser);
-};
-
-}  // namespace xml
-
-}  // namespace omaha
-
-#endif  // OMAHA_COMMON_XML_PARSER_H_