XmlEntityLoader.cpp

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/*
Copyright 2007, 2008, 2009, 2010, 2011 Instituto de Sistemas e Robotica, Instituto Superior Tecnico

This file is part of MeRMaID.

MeRMaID is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

MeRMaID is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with MeRMaID.  If not, see <http://www.gnu.org/licenses/>.
*/



/**
 * @Filename XmlEntityLoader.cpp
 * @Description Implementation of the XmlEntityLoader function
 * @Status Implementing
 * @Version $Id: XmlEntityLoader.cpp 1 2011-03-04 18:13:18Z jreis $
 * @Maintainer Marco Barbosa
 */

#include "config.h"

#include "XmlEntityLoader.hpp"

#include <string>

#include <FilePathSearch.hpp>

using namespace mermaid::support::xml;
using std::string;
using mermaid::support::system::FilePathSearch;



xmlExternalEntityLoader XmlEntityLoader::defaultLoader_ = xmlGetExternalEntityLoader();



xmlParserInputPtr XmlEntityLoader::loaderFunction (const char * URL,
    const char * ID,
    xmlParserCtxtPtr context)
{
#if 0
  cerr << "XmlEntityLoader::loaderFunction : ";
  if (URL != 0) {
    cerr << "URL:" << URL;
  }
  if (ID != 0) {
    cerr << " ID:" << ID;
  }
  
  cerr << endl;
#endif
  
  xmlParserInputPtr ret = defaultLoader_ (URL, ID, context);
  
  // default loader could not find file, lets see if its one of the known paths
  
  if ( (ret == 0) & (URL != 0)) {
    string fileFullPath;
    
    try {
      // look directly for URL
      fileFullPath = FilePathSearch::getFullPathForFile (string (URL));
    }
    catch (...) {
      // look only for file name
      // cerr << "XmlEntityLoader::loaderFunction : could not find file : " << URL << endl;
      string url (URL);
      int slashPos = url.find_last_of ("/");
      string fileName = url.substr (slashPos + 1);
      // cerr << "XmlEntityLoader::loaderFunction : looking for file : " << fileName << endl;
      
      try {
        fileFullPath = FilePathSearch::getFullPathForFile (fileName);
      }
      catch (...) {
        // cerr << "XmlEntityLoader::loaderFunction : could not find file : " << fileName << endl;
      }
    }
    
    ret = defaultLoader_ (fileFullPath.c_str(), ID, context);
  }
  
  return ret;
}