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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* 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
* 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 .
*/
#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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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