///////////////////////////////////////////////////////////////////////////////
// Diego Molla
// diego@ics.mq.edu.au  2006-
///////////////////////////////////////////////////////////////////////////////
// Filename: conexor.cpp
///////////////////////////////////////////////////////////////////////////////
// This file is part of the AnswerFinder package.
///////////////////////////////////////////////////////////////////////////////
// This file contains the implementation of the interface to conexor
///////////////////////////////////////////////////////////////////////////////
// $Log$
///////////////////////////////////////////////////////////////////////////////

#include <cstdlib>
#include <string>
#include <iostream>
#include <map>
#include <boost/regex.hpp>

using namespace std;
using namespace boost;

///////////////////////////////////////////////////////////////////////////////
// Function: xmlTextAttr
// Extract the text that corresponds with the given XML tag and all its 
// attributes
// Preconditions: 
//     - There are no nested elements of the given type
//     - There is only one attribute
///////////////////////////////////////////////////////////////////////////////
pair<string, map<string,string> > 
xmlTextAttr(string element, string inText) {
  regex markup("<\\s*"+element+"(\\s*|\\s+[^>]*)>(.*?)</\\s*(?:"+element+")\\s*>");
  regex attrMarkup("\\b(.*?)=\"(.*?)\"");
  match_results<std::string::const_iterator> what;
  pair<string, map<string,string> > result;
  if (regex_search(inText,what,markup)) {
    cout << "Found element " << what[2].str() << endl; 
    result.first = what[2].str();
    cout << "Searching " << what[1].str() << endl;
    if (regex_search(what[1].str(),what,attrMarkup)) {
      cout << " Found attribute " << what[1].str() << " with value " 
           << what[2].str() << endl;
      result.second[what[1].str()] = what[2].str();
    } // if
  } // if
  return result;  
} // xmltext

int
main() {
  string text, tag;
  cout << "Write a fragment of XML: " << endl;
  getline(cin,text);
  while (text != "end") {
    cout << "Write the XML tag to search: " << endl;
    getline(cin,tag);
    xmlTextAttr(tag,text);
    cout << "Write a fragment of XML: " << endl;
    getline(cin,text);
  } // while
} // main

// end of file: conexor.cpp