| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * |
| *************************************************************/ |
| |
| |
| |
| #ifndef _XML_PARSER_HXX_ |
| #define _XML_PARSER_HXX_ |
| |
| #include <expat.h> |
| #include <stdexcept> |
| |
| //----------------------------------------------------- |
| class xml_parser_exception : public std::runtime_error |
| { |
| public: |
| |
| xml_parser_exception( |
| const std::string& error_msg, |
| int error_code, |
| int line_number, |
| int column_number, |
| long byte_index) : |
| std::runtime_error(error_msg), |
| error_code_(error_code), |
| line_number_(line_number), |
| column_number_(column_number), |
| byte_index_(byte_index) |
| {} |
| |
| int error_code_; |
| int line_number_; |
| int column_number_; |
| long byte_index_; |
| }; |
| |
| |
| //----------------------------------------------------- |
| // Simple wrapper around expat, the xml parser library |
| // created by James Clark |
| //----------------------------------------------------- |
| class i_xml_parser_event_handler; |
| |
| class xml_parser |
| { |
| public: |
| //######################################################## |
| xml_parser(const XML_Char* EncodingName = 0); |
| |
| //######################################################## |
| ~xml_parser(); |
| |
| //######################################################## |
| /** Parse a XML data stream |
| |
| @param pXmlData |
| Pointer to a buffer containing the xml data |
| |
| @param Length |
| Length of the buffer containing the xml data |
| |
| @param IsFinal |
| Indicates whether these are the last xml data |
| of an xml document to parse. For very large |
| xml documents it may be usefull to read and |
| parse the document partially. |
| |
| @precond XmlData must not be null |
| |
| @throws SaxException |
| If the used Sax parser returns an error. The SaxException |
| contains detailed information about the error. */ |
| void parse(const char* XmlData, size_t Length, bool IsFinal = true); |
| |
| //######################################################## |
| /** Set a document handler |
| |
| @descr A document handler implements the interface i_xml_parser_event_handler. |
| The document handler receive notifications of various events |
| from the sax parser for instance "start_document". |
| |
| The client is responsible for the life time management of |
| the given document handler, that means the document handler |
| instance must exist until a new one was set or until the parser |
| no longer exist. |
| |
| @param SaxDocumentHandler |
| The new document handler, may be null if not interessted in |
| sax parser events. |
| |
| @postcond currently used document handler == pSaxDocumentHandler */ |
| void set_document_handler(i_xml_parser_event_handler* event_handler); |
| |
| //######################################################## |
| /** Returns the currently used document handler or null if |
| no document handler was set before. */ |
| i_xml_parser_event_handler* get_document_handler() const; |
| private: |
| |
| void init(); |
| |
| private: |
| i_xml_parser_event_handler* document_handler_; |
| XML_Parser xml_parser_; |
| |
| // prevent copy and assignment |
| private: |
| xml_parser(const xml_parser&); |
| xml_parser& operator=(const xml_parser&); |
| }; |
| |
| #endif |
| |