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# session.hxx

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    00001 // session.hxx: this file is part of the Vaucanson project.
    00002 //
    00003 // Vaucanson, a generic library for finite state machines.
    00004 //
    00005 // Copyright (C) 2005, 2006, 2007 The Vaucanson Group.
    00006 //
    00007 // This program is free software; you can redistribute it and/or
    00008 // modify it under the terms of the GNU General Public License
    00009 // as published by the Free Software Foundation; either version 2
    00010 // of the License, or (at your option) any later version.
    00011 //
    00012 // The complete GNU General Public Licence Notice can be found as the
    00013 // `COPYING' file in the root directory.
    00014 //
    00015 // The Vaucanson Group consists of people listed in the `AUTHORS' file.
    00016 //
    00017 #ifndef VCSN_XML_SESSION_HXX
    00018 # define VCSN_XML_SESSION_HXX
    00019
    00032 namespace vcsn
    00033 {
    00034   namespace xml
    00035   {
    00036
    00037     xml_session::xml_session()
    00038     {
    00039       using namespace xercesc;
    00040
    00041       XMLPlatformUtils::Initialize();
    00042       impl = DOMImplementationRegistry::getDOMImplementation(transcode("LS"));
    00043       doc = impl->createDocument(transcode(VCSN_XMLNS), transcode("session"), 0);
    00044       root = doc->getDocumentElement();
    00045     }
    00046
    00047
    00048     xml_session::~xml_session()
    00049     {
    00050       xercesc::XMLPlatformUtils::Terminate();
    00051     }
    00052
    00053   } // ! xml
    00054
    00055   template<typename S, typename T>
    00056   xml::xml_session&
    00057   op_rout(const S& structure,
    00058           xml::xml_session& s,
    00059           const T& value)
    00060   {
    00061     xercesc::XMLPlatformUtils::Initialize();
    00062
    00063     Element<S, T> a(structure, value);
    00064     xml::xml_converter<Element<S, T> > x;
    00065     x.create_document(a);
    00066     xercesc::DOMNode* node =
    00067       s.doc->importNode(static_cast<xercesc::DOMNode*>(x.root_get()), true);
    00068
    00069     s.root->appendChild(node);
    00070
    00071     return s;
    00072   }
    00073
    00074
    00075   template <class S, class T>
    00076   xml::xml_session& op_rin(S& structure,
    00077                            xml::xml_session& s,
    00078                            T& value)
    00079   {
    00080     using namespace xercesc;
    00081     using namespace vcsn;
    00082     using namespace vcsn::xml;
    00083
    00084     XMLPlatformUtils::Initialize();
    00085     Element<S, T> a(structure, value);
    00086
    00087     // Clear the automaton content.
    00088     for (typename Element<S, T>::state_iterator is = a.states().begin();
    00089          is != a.states().end(); ++is)
    00090       a.del_state(*is);
    00091
    00092     if (! s.root->getFirstChild())
    00093       FAIL("No more automaton in session");
    00094     for (DOMNode* n = s.root->getFirstChild(); n; n = n->getNextSibling())
    00095       if (n->getNodeType() == DOMNode::ELEMENT_NODE)
    00096       {
    00097         DOMElement* elt = static_cast<DOMElement*>(n);
    00098
    00099         typedef Element<S, T> automaton_t;
    00100         typedef Node<automaton_t> node_t;
    00101         Factory<node_t, std::string> f;
    00102         register_all_factory(f, automaton_t);
    00103         typename node_t::map_t str2state;
    00104
    00105         node_t* node = factory_create(f, xml2str(n->getNodeName()));
    00106         node->process(elt, a, str2state, f);
    00107         s.root->removeChild(n);
    00108       }
    00109     op_assign(structure.self(), value, a.value());
    00110
    00111     return s;
    00112   }
    00113
    00114
    00115   template <class IStream>
    00116   IStream& operator >> (IStream& is, xml::xml_session& s)
    00117   {
    00118     using namespace xercesc;
    00119
    00120     xercesc::XMLPlatformUtils::Initialize();
    00121     DOMNode* node = xml::xerces_parser::stream_parser(is);
    00122
    00123     for (DOMNode* n = node->getFirstChild(); n; n = n->getNextSibling())
    00124       if (n->getNodeType() == DOMNode::ELEMENT_NODE)
    00125         (s.root)->appendChild(s.doc->importNode(n, true));
    00126
    00127     return is;
    00128   }
    00129
    00130
    00131   template <class OStream>
    00132   OStream& operator << (OStream& out, const xml::xml_session& s)
    00133   {
    00134     xercesc::XMLPlatformUtils::Initialize();
    00135     xml::tools::print_document(s.impl, s.root, out);
    00136
    00137     return out;
    00138   }
    00139
    00140
    00141 } // !vcsn
    00142
    00143 #endif // ! VCSN_XML_SESSION_HXX