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// Copyright Maarten L. Hekkelman, Radboud University 2008-2013.
// Copyright Maarten L. Hekkelman, 2014-2022
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#pragma once
/// \file
/// definition of the libzeep XML parser, a recursive descent parser
#include <zeep/config.hpp>
#include <functional>
#include <list>
#include <zeep/xml/node.hpp>
#include <zeep/exception.hpp>
#include <zeep/xml/character-classification.hpp>
namespace zeep::xml
{
namespace detail
{
struct attr
{
std::string m_ns;
std::string m_name;
std::string m_value;
bool m_id; // whether the attribute is defined as type ID in its ATTLIST decl
};
} // namespace detail
/// If an invalid_exception is thrown, it means the XML document is not valid: it does
/// not conform the DTD specified in the XML document.
/// This is only thrown when validation is enabled.
///
/// The what() member of the exception object will contain an explanation.
class invalid_exception : public zeep::exception
{
public:
invalid_exception(const std::string& msg) : exception(msg) {}
~invalid_exception() throw() {}
};
/// If an not_wf_exception is thrown, it means the XML document is not well formed.
/// Often this means syntax errors, missing \< or \> characters, non matching open
/// and close tags, etc.
///
/// The what() member of the exception object will contain an explanation.
class not_wf_exception : public zeep::exception
{
public:
not_wf_exception(const std::string& msg) : exception(msg) {}
~not_wf_exception() throw() {}
};
/// zeep::xml::parser is a SAX parser. After construction, you should assign
/// call back handlers for the SAX events and then call parse().
class parser
{
public:
using attr_type = detail::attr;
using attr_list_type = std::list<detail::attr>;
parser(std::istream& is);
parser(const std::string& s);
virtual ~parser();
std::function<void(encoding_type encoding, bool standalone, float version)> xml_decl_handler;
std::function<void(const std::string& name, const std::string& uri, const attr_list_type& atts)> start_element_handler;
std::function<void(const std::string& name, const std::string& uri)> end_element_handler;
std::function<void(const std::string& data)> character_data_handler;
std::function<void(const std::string& target, const std::string& data)> processing_instruction_handler;
std::function<void(const std::string& data)> comment_handler;
std::function<void()> start_cdata_section_handler;
std::function<void()> end_cdata_section_handler;
std::function<void(const std::string& prefix, const std::string& uri)> start_namespace_decl_handler;
std::function<void(const std::string& prefix)> end_namespace_decl_handler;
std::function<void(const std::string& root, const std::string& publicId, const std::string& uri)> doctype_decl_handler;
std::function<void(const std::string& name, const std::string& systemId, const std::string& publicId)> notation_decl_handler;
std::function<std::istream *(const std::string& base, const std::string& pubid, const std::string& uri)>external_entity_ref_handler;
std::function<void(const std::string& msg)> report_invalidation_handler;
void parse(bool validate, bool validate_ns);
protected:
friend struct parser_imp;
virtual void xml_decl(encoding_type encoding, bool standalone, float version);
virtual void doctype_decl(const std::string& root, const std::string& publicId, const std::string& uri);
virtual void start_element(const std::string& name,
const std::string& uri, const attr_list_type& atts);
virtual void end_element(const std::string& name, const std::string& uri);
virtual void character_data(const std::string& data);
virtual void processing_instruction(const std::string& target, const std::string& data);
virtual void comment(const std::string& data);
virtual void start_cdata_section();
virtual void end_cdata_section();
virtual void start_namespace_decl(const std::string& prefix, const std::string& uri);
virtual void end_namespace_decl(const std::string& prefix);
virtual void notation_decl(const std::string& name,
const std::string& systemId, const std::string& publicId);
virtual void report_invalidation(const std::string& msg);
virtual std::istream*
external_entity_ref(const std::string& base,
const std::string& pubid, const std::string& uri);
struct parser_imp *m_impl;
std::istream *m_istream;
};
} // namespace zeep::xml
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