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# handlers_base.hxx

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    00001 // handlers_base.hxx: this file is part of the Vaucanson project.
    00002 //
    00003 // Vaucanson, a generic library for finite state machines.
    00004 //
    00005 // Copyright (C) 2007, 2008 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
    00018 #ifndef VCSN_XML_HANDLERS_BASE_HXX
    00019 # define VCSN_XML_HANDLERS_BASE_HXX
    00020
    00021 # include <xercesc/util/XMLString.hpp>
    00022
    00023 # include <vaucanson/xml/tools.hh>
    00024
    00025 namespace vcsn
    00026 {
    00027   namespace xml
    00028   {
    00029     /*
    00030      * ErrHandler
    00031      */
    00032     void
    00033     ErrHandler::warning (const xercesc::SAXParseException& exc)
    00034     {
    00035       char* msg = xercesc::XMLString::transcode(exc.getMessage());
    00036       std::cerr << "Warning: " << msg << std::endl;
    00037       xercesc::XMLString::release(&msg);
    00038     }
    00039
    00040     void
    00041     ErrHandler::error (const xercesc::SAXParseException& exc)
    00042     {
    00043       char* msg = xercesc::XMLString::transcode(exc.getMessage());
    00044       std::cerr << "Error: " << msg << std::endl;
    00045       xercesc::XMLString::release(&msg);
    00046     }
    00047
    00048     void
    00049     ErrHandler::fatalError (const xercesc::SAXParseException& exc)
    00050     {
    00051       char* msg = xercesc::XMLString::transcode(exc.getMessage());
    00052       std::cerr << "Fatal error: " << msg << std::endl;
    00053       xercesc::XMLString::release(&msg);
    00054       throw exc;
    00055     }
    00056
    00057     namespace error
    00058     {
    00059       void token(const XMLCh* const localname)
    00060       {
    00061         std::cerr << "Unexpected token: " << xmlstr(localname) << std::endl;
    00062         assertion(false);
    00063       }
    00064       void attrs(const XMLCh* const localname,
    00065                  const std::string& name,
    00066                  const std::string& value)
    00067       {
    00068         std::cerr << "Unexpected value of `" << name << "' (" << value << ") in token: " << xmlstr(localname) << std::endl;
    00069         assertion(false);
    00070       }
    00071
    00072       void missattrs(const XMLCh* const localname,
    00073                      const std::string& name)
    00074       {
    00075         std::cerr << "Missing attribute `" << name << " in token: " << xmlstr(localname) << std::endl;
    00076         assertion(false);
    00077       }
    00078
    00079       void notletter(const std::string& str)
    00080       {
    00081         std::cerr << str << " is not a letter" << std::endl;
    00082         assertion(false);
    00083       }
    00084
    00085     } // !error
    00086     /*
    00087      * Handler
    00088      */
    00089     Handler::Handler (xercesc::SAX2XMLReader* parser,
    00090                       xercesc::DefaultHandler& root,
    00091                       XMLEq& eq)
    00092       : DefaultHandler(),
    00093         parser_(parser),
    00094         root_(root),
    00095         eq_(eq)
    00096     {
    00097     }
    00098
    00099     Handler::Handler (xercesc::SAX2XMLReader* parser,
    00100                       Handler& root)
    00101       : DefaultHandler(),
    00102         parser_(parser),
    00103         root_(root),
    00104         eq_(root.eq_)
    00105     {
    00106     }
    00107
    00108     void
    00109     Handler::startElement (const XMLCh* const uri,
    00110                                 const XMLCh* const localname,
    00111                                 const XMLCh* const qname,
    00112                                 const xercesc::Attributes& attrs)
    00113     {
    00114 # ifdef DEBUG
    00115       indent_++;
    00116       std::cout << std::string(2 * indent_, ' ') << "<" << xmlstr(localname) << ">" << std::endl;
    00117 # endif
    00118       start(uri, localname, qname, attrs);
    00119     }
    00120
    00121     void
    00122     Handler::endElement (const XMLCh* const uri,
    00123                               const XMLCh* const localname,
    00124                               const XMLCh* const qname)
    00125     {
    00126       end(uri, localname, qname);
    00127 # ifdef DEBUG
    00128       std::cout << std::string(2 * indent_, ' ') << "</" << xmlstr(localname) << ">" << std::endl;
    00129       indent_--;
    00130 # endif
    00131     }
    00132     /*
    00133      * UnsupHandler
    00134      */
    00135     UnsupHandler::UnsupHandler (xercesc::SAX2XMLReader* parser,
    00136                                 Handler& root)
    00137       : Handler(parser, root),
    00138         depth_(1)
    00139     {
    00140     }
    00141
    00142     void
    00143     UnsupHandler::start (const XMLCh* const,
    00144                                 const XMLCh* const,
    00145                                 const XMLCh* const,
    00146                                 const xercesc::Attributes&)
    00147     {
    00148       depth_++;
    00149     }
    00150
    00151     void
    00152     UnsupHandler::end (const XMLCh* const,
    00153 # ifdef DEBUG
    00154                               const XMLCh* const localname,
    00155 # else
    00156                               const XMLCh* const,
    00157 # endif
    00158                               const XMLCh* const)
    00159     {
    00160 # ifdef DEBUG
    00161       std::cerr << std::string((indent_ + 1) * 2, ' ') << "unsupported token: " << xmlstr(localname) << std::endl;
    00162 # endif
    00163       depth_--;
    00164       if (depth_ <= 0)
    00165       {
    00166         parser_->setContentHandler(&root_);
    00167         depth_ = 1;
    00168       }
    00169     }
    00170   } // !xml
    00171 } // !vcsn
    00172
    00173 #endif // !VCSN_XML_HANDLERS_BASE_HXX