729 lines
24 KiB
C++
729 lines
24 KiB
C++
// ----------------------------------------------------------------------------
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// Copyright (C) 2002-2005 Marcin Kalicinski
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Based on XML grammar by Daniel C. Nuffer
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// http://spirit.sourceforge.net/repository/applications/xml.zip
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//
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// For more information, see www.boost.org
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// ----------------------------------------------------------------------------
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#ifndef BOOST_PROPERTY_TREE_DETAIL_XML_PARSER_READ_SPIRIT_HPP_INCLUDED
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#define BOOST_PROPERTY_TREE_DETAIL_XML_PARSER_READ_SPIRIT_HPP_INCLUDED
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//#define BOOST_SPIRIT_DEBUG
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#include <boost/property_tree/ptree.hpp>
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#include <boost/property_tree/detail/xml_parser_error.hpp>
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#include <boost/property_tree/detail/xml_parser_flags.hpp>
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#include <boost/property_tree/detail/xml_parser_utils.hpp>
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#include <boost/spirit.hpp>
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#include <boost/spirit/iterator/position_iterator.hpp>
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#include <string>
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#include <locale>
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#include <istream>
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#include <vector>
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namespace boost { namespace property_tree { namespace xml_parser
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{
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// XML parser context
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template<class Ptree>
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struct context
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{
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typedef typename Ptree::char_type Ch;
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typedef std::basic_string<Ch> Str;
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typedef boost::spirit::position_iterator<typename std::vector<Ch>::const_iterator> It;
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int flags;
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std::vector<Ptree *> stack;
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///////////////////////////////////////////////////////////////////////
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// Actions
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struct a_key_s
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{
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context &c;
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a_key_s(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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if (c.stack.empty())
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throw xml_parser_error("xml parse error",
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b.get_position().file,
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b.get_position().line);
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Str name(b, e);
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Ptree *child = &c.stack.back()->push_back(std::make_pair(name, Ptree()))->second;
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c.stack.push_back(child);
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}
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};
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struct a_key_e
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{
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context &c;
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a_key_e(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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if (c.stack.size() <= 1)
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throw xml_parser_error("xml parse error",
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b.get_position().file,
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b.get_position().line);
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c.stack.pop_back();
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}
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};
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struct a_content
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{
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context &c;
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a_content(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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Str s = decode_char_entities(detail::trim(condense(Str(b, e))));
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if (!s.empty())
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{
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if (c.flags & no_concat_text)
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c.stack.back()->push_back(std::make_pair(xmltext<Ch>(), Ptree(s)));
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else
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c.stack.back()->put_own(c.stack.back()->template get_own<std::basic_string<Ch> >() + s);
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}
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}
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};
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struct a_attr_key
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{
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context &c;
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a_attr_key(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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c.stack.back()->put_child(Ch('/'), xmlattr<Ch>() + Ch('/') + Str(b, e), empty_ptree<Ptree>());
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}
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};
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struct a_attr_data
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{
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context &c;
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a_attr_data(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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Ptree &attr = c.stack.back()->get_child(xmlattr<Ch>());
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attr.back().second.put_own(Str(b + 1, e - 1));
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}
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};
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struct a_comment
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{
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context &c;
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a_comment(context &c): c(c) { }
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void operator()(It b, It e) const
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{
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c.stack.back()->push_back(std::make_pair(xmlcomment<Ch>(), Ptree(Str(b, e))));
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}
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};
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};
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///////////////////////////////////////////////////////////////////////
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// Grammar
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template<class Ptree>
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struct xml_grammar: public boost::spirit::grammar<xml_grammar<Ptree> >
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{
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typedef context<Ptree> context_t;
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mutable context_t c;
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template<class ScannerT>
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struct definition
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{
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typedef typename ScannerT::value_t char_t;
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typedef boost::spirit::chset<char_t> chset_t;
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boost::spirit::rule<ScannerT>
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prolog, element, Misc, PEReference, Reference, PITarget, CData,
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doctypedecl, XMLDecl, SDDecl, VersionInfo, EncodingDecl, VersionNum,
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Eq, DeclSep, ExternalID, markupdecl, NotationDecl, EntityDecl,
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AttlistDecl, elementdecl, TextDecl, extSubsetDecl, conditionalSect,
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EmptyElemTag, STag, content, ETag, Attribute, contentspec, Mixed,
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children, choice, seq, cp, AttDef, AttType, DefaultDecl, StringType,
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TokenizedType, EnumeratedType, NotationType, Enumeration, EntityValue,
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AttValue, SystemLiteral, PubidLiteral, CharDataChar, CharData, Comment,
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PI, CDSect, extSubset, includeSect, ignoreSect, ignoreSectContents,
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Ignore, CharRef, EntityRef, GEDecl, PEDecl, EntityDef, PEDef,
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NDataDecl, extParsedEnt, EncName, PublicID, document, S, Name, Names,
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Nmtoken, Nmtokens, STagB, STagE1, STagE2;
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definition(const xml_grammar &self)
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{
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using namespace boost::spirit;
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// XML Char sets
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chset_t Char("\x9\xA\xD\x20-\x7F");
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chset_t Sch("\x20\x9\xD\xA");
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chset_t Letter("\x41-\x5A\x61-\x7A");
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chset_t Digit("0-9");
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chset_t XDigit("0-9A-Fa-f");
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chset_t Extender("\xB7");
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chset_t NameChar =
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Letter
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| Digit
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| (char_t)'.'
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| (char_t)'-'
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| (char_t)'_'
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| (char_t)':'
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| Extender;
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document =
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prolog >> element >> *Misc
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;
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S =
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+(Sch)
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;
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Name =
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(Letter | '_' | ':')
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>> *(NameChar)
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;
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Names =
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Name >> *(S >> Name)
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;
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Nmtoken =
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+NameChar
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;
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Nmtokens =
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Nmtoken >> *(S >> Nmtoken)
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;
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EntityValue =
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'"' >> *( (anychar_p - (chset_t(detail::widen<char_t>("%&\"").c_str())))
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| PEReference
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| Reference)
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>> '"'
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| '\'' >> *( (anychar_p - (chset_t("%&'")))
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| PEReference
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| Reference)
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>> '\''
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;
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AttValue =
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'"' >> *( (anychar_p - (chset_t("<&\"")))
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| Reference)
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>> '"'
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| '\'' >> *( (anychar_p - (chset_t("<&'")))
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| Reference)
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>> '\''
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;
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SystemLiteral=
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('"' >> *(anychar_p - '"') >> '"')
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| ('\'' >> *(anychar_p - '\'') >> '\'')
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;
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chset_t PubidChar("\x20\xD\xA'a-zA-Z0-9()+,./:=?;!*#@$_%-");
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PubidLiteral =
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'"' >> *PubidChar >> '"'
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| '\'' >> *(PubidChar - '\'') >> '\''
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;
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CharDataChar =
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//anychar_p - (chset_t("<&"))
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anychar_p - (chset_t("<"))
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;
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CharData =
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*(CharDataChar - "]]>")
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;
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Comment =
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"<!--" >>
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(
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*(
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(Char - '-')
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| ('-' >> (Char - '-'))
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)
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)[typename context_t::a_comment(self.c)]
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>> "-->"
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;
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PI =
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"<?" >> PITarget >> !(S >> (*(Char - "?>"))) >> "?>"
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;
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PITarget =
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Name - (as_lower_d["xml"])
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;
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CDSect =
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"<![CDATA[" >> CData >> "]]>"
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;
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CData =
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*(Char - "]]>")
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;
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prolog =
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!XMLDecl >> *Misc >> !(doctypedecl >> *Misc)
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;
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XMLDecl =
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"<?xml" >> VersionInfo >> !EncodingDecl >> !SDDecl
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>> !S >> "?>"
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;
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VersionInfo =
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S >> "version" >> Eq >>
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(
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'\'' >> VersionNum >> '\''
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| '"' >> VersionNum >> '"'
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)
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;
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Eq =
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!S >> '=' >> !S
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;
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chset_t VersionNumCh("a-zA-Z0-9_.:-");
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VersionNum =
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+(VersionNumCh)
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;
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Misc =
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Comment
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| PI
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| S
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;
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doctypedecl =
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"<!DOCTYPE" >> S >> Name >> !(S >> ExternalID) >> !S >>
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!(
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'[' >> *(markupdecl | DeclSep) >> ']' >> !S
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)
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>> '>'
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;
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DeclSep =
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PEReference
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| S
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;
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markupdecl =
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elementdecl
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| AttlistDecl
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| EntityDecl
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| NotationDecl
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| PI
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| Comment
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;
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extSubset =
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!TextDecl >> extSubsetDecl
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;
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extSubsetDecl =
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*(
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markupdecl
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| conditionalSect
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| DeclSep
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)
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;
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SDDecl =
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S >> "standalone" >> Eq >>
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(
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('\'' >> (str_p("yes") | "no") >> '\'')
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| ('"' >> (str_p("yes") | "no") >> '"')
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)
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;
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/*
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element =
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EmptyElemTag
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| STag >> content >> ETag
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;
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*/
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element =
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STagB >> (STagE2 | (STagE1 >> content >> ETag))[typename context_t::a_key_e(self.c)]
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;
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STag =
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'<' >> Name >> *(S >> Attribute) >> !S >> '>'
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;
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STagB =
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'<'
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>> Name[typename context_t::a_key_s(self.c)]
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>> *(S >> Attribute)
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>> !S
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;
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STagE1 =
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ch_p(">")
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;
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STagE2 =
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str_p("/>")
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;
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Attribute =
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Name[typename context_t::a_attr_key(self.c)]
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>> Eq
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>> AttValue[typename context_t::a_attr_data(self.c)]
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;
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ETag =
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"</" >> Name >> !S >> '>'
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;
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content =
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!(CharData[typename context_t::a_content(self.c)]) >>
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*(
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(
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element
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// | Reference
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| CDSect
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| PI
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| Comment
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) >>
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!(CharData[typename context_t::a_content(self.c)])
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)
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;
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EmptyElemTag =
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'<' >> Name >> *(S >> Attribute) >> !S >> "/>"
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;
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elementdecl =
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"<!ELEMENT" >> S >> Name >> S >> contentspec >> !S >> '>'
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;
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contentspec =
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str_p("EMPTY")
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| "ANY"
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| Mixed
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| children
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;
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children =
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(choice | seq) >> !(ch_p('?') | '*' | '+')
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;
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cp =
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(Name | choice | seq) >> !(ch_p('?') | '*' | '+')
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;
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choice =
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'(' >> !S >> cp
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>> +(!S >> '|' >> !S >> cp)
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>> !S >> ')'
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;
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seq =
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'(' >> !S >> cp >>
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*(!S >> ',' >> !S >> cp)
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>> !S >> ')'
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;
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Mixed =
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'(' >> !S >> "#PCDATA"
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>> *(!S >> '|' >> !S >> Name)
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>> !S >> ")*"
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| '(' >> !S >> "#PCDATA" >> !S >> ')'
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;
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AttlistDecl =
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"<!ATTLIST" >> S >> Name >> *AttDef >> !S >> '>'
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;
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AttDef =
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S >> Name >> S >> AttType >> S >> DefaultDecl
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;
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AttType =
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StringType
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| TokenizedType
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| EnumeratedType
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;
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StringType =
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str_p("CDATA")
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;
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TokenizedType =
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longest_d[
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str_p("ID")
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| "IDREF"
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| "IDREFS"
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| "ENTITY"
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| "ENTITIES"
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| "NMTOKEN"
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| "NMTOKENS"
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]
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;
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EnumeratedType =
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NotationType
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| Enumeration
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;
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NotationType =
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"NOTATION" >> S >> '(' >> !S >> Name
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>> *(!S >> '|' >> !S >> Name)
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>> !S >> ')'
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;
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Enumeration =
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'(' >> !S >> Nmtoken
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>> *(!S >> '|' >> !S >> Nmtoken)
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>> !S >> ')'
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;
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DefaultDecl =
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str_p("#REQUIRED")
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| "#IMPLIED"
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| !("#FIXED" >> S) >> AttValue
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;
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conditionalSect =
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includeSect
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| ignoreSect
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;
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includeSect =
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"<![" >> !S >> "INCLUDE" >> !S
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>> '[' >> extSubsetDecl >> "]]>"
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;
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ignoreSect =
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"<![" >> !S >> "IGNORE" >> !S
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>> '[' >> *ignoreSectContents >> "]]>"
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;
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ignoreSectContents =
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Ignore >> *("<![" >> ignoreSectContents >> "]]>" >> Ignore)
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;
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Ignore =
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*(Char - (str_p("<![") | "]]>"))
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;
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CharRef =
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"&#" >> +Digit >> ';'
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| "&#x" >> +XDigit >> ';'
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;
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Reference =
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EntityRef
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| CharRef
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;
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EntityRef =
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'&' >> Name >> ';'
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;
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PEReference =
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'%' >> Name >> ';'
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;
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EntityDecl =
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GEDecl
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| PEDecl
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;
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GEDecl =
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"<!ENTITY" >> S >> Name >> S >> EntityDef >> !S >> '>'
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;
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PEDecl =
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"<!ENTITY" >> S >> '%' >> S >> Name >> S >> PEDef
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>> !S >> '>'
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;
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EntityDef =
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EntityValue
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| ExternalID >> !NDataDecl
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;
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PEDef =
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EntityValue
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| ExternalID
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;
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ExternalID =
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"SYSTEM" >> S >> SystemLiteral
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| "PUBLIC" >> S >> PubidLiteral >> S >> SystemLiteral
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;
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NDataDecl =
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S >> "NDATA" >> S >> Name
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;
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TextDecl =
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"<?xml" >> !VersionInfo >> EncodingDecl >> !S >> "?>"
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;
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extParsedEnt =
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!TextDecl >> content
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;
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EncodingDecl =
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S >> "encoding" >> Eq
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>> ( '"' >> EncName >> '"'
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| '\'' >> EncName >> '\''
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)
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;
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EncName =
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Letter >> *(Letter | Digit | '.' | '_' | '-')
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;
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NotationDecl =
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"<!NOTATION" >> S >> Name >> S
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>> (ExternalID | PublicID) >> !S >> '>'
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;
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PublicID =
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"PUBLIC" >> S >> PubidLiteral
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;
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BOOST_SPIRIT_DEBUG_RULE(document);
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BOOST_SPIRIT_DEBUG_RULE(prolog);
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BOOST_SPIRIT_DEBUG_RULE(element);
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BOOST_SPIRIT_DEBUG_RULE(Misc);
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BOOST_SPIRIT_DEBUG_RULE(PEReference);
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BOOST_SPIRIT_DEBUG_RULE(Reference);
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BOOST_SPIRIT_DEBUG_RULE(PITarget);
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BOOST_SPIRIT_DEBUG_RULE(CData);
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BOOST_SPIRIT_DEBUG_RULE(doctypedecl);
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BOOST_SPIRIT_DEBUG_RULE(XMLDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(SDDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(VersionInfo);
|
|
BOOST_SPIRIT_DEBUG_RULE(EncodingDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(VersionNum);
|
|
BOOST_SPIRIT_DEBUG_RULE(Eq);
|
|
BOOST_SPIRIT_DEBUG_RULE(DeclSep);
|
|
BOOST_SPIRIT_DEBUG_RULE(ExternalID);
|
|
BOOST_SPIRIT_DEBUG_RULE(markupdecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(NotationDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(EntityDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(AttlistDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(elementdecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(TextDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(extSubsetDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(conditionalSect);
|
|
BOOST_SPIRIT_DEBUG_RULE(EmptyElemTag);
|
|
BOOST_SPIRIT_DEBUG_RULE(STag);
|
|
BOOST_SPIRIT_DEBUG_RULE(content);
|
|
BOOST_SPIRIT_DEBUG_RULE(ETag);
|
|
BOOST_SPIRIT_DEBUG_RULE(Attribute);
|
|
BOOST_SPIRIT_DEBUG_RULE(contentspec);
|
|
BOOST_SPIRIT_DEBUG_RULE(Mixed);
|
|
BOOST_SPIRIT_DEBUG_RULE(children);
|
|
BOOST_SPIRIT_DEBUG_RULE(choice);
|
|
BOOST_SPIRIT_DEBUG_RULE(seq);
|
|
BOOST_SPIRIT_DEBUG_RULE(cp);
|
|
BOOST_SPIRIT_DEBUG_RULE(AttDef);
|
|
BOOST_SPIRIT_DEBUG_RULE(AttType);
|
|
BOOST_SPIRIT_DEBUG_RULE(DefaultDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(StringType);
|
|
BOOST_SPIRIT_DEBUG_RULE(TokenizedType);
|
|
BOOST_SPIRIT_DEBUG_RULE(EnumeratedType);
|
|
BOOST_SPIRIT_DEBUG_RULE(NotationType);
|
|
BOOST_SPIRIT_DEBUG_RULE(Enumeration);
|
|
BOOST_SPIRIT_DEBUG_RULE(EntityValue);
|
|
BOOST_SPIRIT_DEBUG_RULE(AttValue);
|
|
BOOST_SPIRIT_DEBUG_RULE(SystemLiteral);
|
|
BOOST_SPIRIT_DEBUG_RULE(PubidLiteral);
|
|
BOOST_SPIRIT_DEBUG_RULE(CharDataChar);
|
|
BOOST_SPIRIT_DEBUG_RULE(CharData);
|
|
BOOST_SPIRIT_DEBUG_RULE(Comment);
|
|
BOOST_SPIRIT_DEBUG_RULE(PI);
|
|
BOOST_SPIRIT_DEBUG_RULE(CDSect);
|
|
BOOST_SPIRIT_DEBUG_RULE(extSubset);
|
|
BOOST_SPIRIT_DEBUG_RULE(includeSect);
|
|
BOOST_SPIRIT_DEBUG_RULE(ignoreSect);
|
|
BOOST_SPIRIT_DEBUG_RULE(ignoreSectContents);
|
|
BOOST_SPIRIT_DEBUG_RULE(Ignore);
|
|
BOOST_SPIRIT_DEBUG_RULE(CharRef);
|
|
BOOST_SPIRIT_DEBUG_RULE(EntityRef);
|
|
BOOST_SPIRIT_DEBUG_RULE(GEDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(PEDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(EntityDef);
|
|
BOOST_SPIRIT_DEBUG_RULE(PEDef);
|
|
BOOST_SPIRIT_DEBUG_RULE(NDataDecl);
|
|
BOOST_SPIRIT_DEBUG_RULE(extParsedEnt);
|
|
BOOST_SPIRIT_DEBUG_RULE(EncName);
|
|
BOOST_SPIRIT_DEBUG_RULE(PublicID);
|
|
BOOST_SPIRIT_DEBUG_RULE(document);
|
|
BOOST_SPIRIT_DEBUG_RULE(S);
|
|
BOOST_SPIRIT_DEBUG_RULE(Name);
|
|
BOOST_SPIRIT_DEBUG_RULE(Names);
|
|
BOOST_SPIRIT_DEBUG_RULE(Nmtoken);
|
|
BOOST_SPIRIT_DEBUG_RULE(Nmtokens);
|
|
BOOST_SPIRIT_DEBUG_RULE(STagB);
|
|
BOOST_SPIRIT_DEBUG_RULE(STagE1);
|
|
BOOST_SPIRIT_DEBUG_RULE(STagE2);
|
|
|
|
}
|
|
|
|
const boost::spirit::rule<ScannerT> &start() const
|
|
{
|
|
return document;
|
|
}
|
|
|
|
};
|
|
|
|
};
|
|
|
|
template<class Ptree>
|
|
void read_xml_internal(std::basic_istream<typename Ptree::char_type> &stream,
|
|
Ptree &pt,
|
|
int flags,
|
|
const std::string &filename)
|
|
{
|
|
|
|
typedef typename Ptree::char_type Ch;
|
|
typedef boost::spirit::position_iterator<typename std::vector<Ch>::const_iterator> It;
|
|
|
|
BOOST_ASSERT(validate_flags(flags));
|
|
|
|
// Load data into vector
|
|
std::vector<Ch> v(std::istreambuf_iterator<Ch>(stream.rdbuf()),
|
|
std::istreambuf_iterator<Ch>());
|
|
if (!stream.good())
|
|
throw xml_parser_error("read error", filename, 0);
|
|
|
|
// Initialize iterators
|
|
It begin(v.begin(), v.end());
|
|
It end;
|
|
begin.set_position(filename);
|
|
|
|
// Prepare grammar
|
|
Ptree local;
|
|
xml_grammar<Ptree> g;
|
|
g.c.stack.push_back(&local); // Push root ptree on context stack
|
|
g.c.flags = flags;
|
|
|
|
// Parse into local
|
|
boost::spirit::parse_info<It> result = boost::spirit::parse(begin, end, g);
|
|
if (!result.full || g.c.stack.size() != 1)
|
|
throw xml_parser_error("xml parse error",
|
|
result.stop.get_position().file,
|
|
result.stop.get_position().line);
|
|
|
|
// Swap local and pt
|
|
pt.swap(local);
|
|
}
|
|
|
|
} } }
|
|
|
|
#endif
|