/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
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#ifndef INCLUDED_SHELL_INC_INTERNAL_XML_PARSER_HXX
#define INCLUDED_SHELL_INC_INTERNAL_XML_PARSER_HXX
#include <expat.h>
#include <stdexcept>
class xml_parser_exception final : public std::runtime_error
{
public :
xml_parser_exception(const std::string& error_msg)
: std::runtime_error(error_msg)
{
}
};
// Simple wrapper around expat, the xml parser library
// created by James Clark
class i_xml_parser_event_handler;
class xml_parser
{
public :
xml_parser();
~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 useful 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);
/** 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 interested 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 { return document_handler_; }
private :
void init();
private :
i_xml_parser_event_handler* document_handler_;
XML_Parser xml_parser_;
private :
xml_parser(const xml_parser&) = delete ;
xml_parser& operator =(const xml_parser&) = delete ;
};
#endif
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