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#ifndef XMLPARSER_H

#define XMLPARSER_H

#include <iostream>

#include <fstream>

#include <string>

#include <list>

#include <map>

namespace Util

{

  struct XmlHead

  {

    XmlHead() : is_xml(false) { }

    bool is_xml;

    std::map<std::string, std::string> atts;

  };

  struct XmlBody;

  class XmlDoc;

  struct XmlElement

  {

    XmlElement(XmlDoc* in_doc, XmlElement* parent_elem) : body(0), doc(in_doc), parent(parent_elem) { }

    XmlElement(XmlDoc* in_doc) : body(0), doc(in_doc), parent(0) { }

    ~XmlElement();

    void process_elements();

    std::string name;

    std::map<std::string, std::string> atts;

    XmlBody* body;

    XmlDoc* doc;

    XmlElement* parent;

  };

  struct XmlBody

  {

    XmlBody(XmlDoc* parent) : doc(parent), element(parent) { }

    void process_element();

    std::string text;

    XmlElement element;

    XmlDoc* doc;

  };

  typedef void (*XmlElementHandler)(XmlElement&);

  class XmlDoc

  {

  public:

    XmlDoc(const char* filename);

    bool is_valid() const { return head.is_xml; }

    void add_handler(const std::string& element_name, const XmlElementHandler& h) { handlers[element_name] = h; }

    void process_elements();

    void close() { infile.close(); }

    XmlHead head;

  private:

    friend XmlElement;

    friend XmlBody;

    std::ifstream infile;

    XmlBody body;

    std::map<std::string, XmlElementHandler> handlers;

  };

  std::ostream& operator<<(std::ostream& out, const XmlHead& head);

}

#endif // XMLPARSER_H