#ifndef TXTPRT_IMPORT
#define TXTPRT_IMPORT

#include <iostream>
#include <fstream>
#include <string>
#include <cstdio>

#include "entity.h"

struct txtprt_i_exception
{
  txtprt_i_exception (std::string m)
  : msg(m)
  {
  }

  std::string msg;
};

class txtprt_parser
{
  std::ifstream ifs;
  int cur_line;
  std::string line_data;

public:
  txtprt_parser ()
  {
  }

  geometry *read (std::string filename);
  inline void match_char (char c)
  {
    char o;
    match_achar (o);
    if (o != c)
      throw txtprt_i_exception ((std::string) "Fileformat invalid, expected '"
				+ c + "' got: '" + o + "' -> '" +
				line_data.substr (0, 10) + "...");
  }

  inline void match_achar (char &c)
  {
    std::string s = line_data.substr (0, 1);
    c = s[0];
    line_data.erase (0, 1);
  }

  inline void match_space ()
  {
    match_char (' ');
  }

  inline void match_nl ()
  {
    match_char ('\n');
  }

  inline void match_number (double &d)
  {
    size_t p = line_data.find_first_not_of ("0123456789.-+e");
    std::string tmp = line_data.substr (0, p);
    line_data.erase (0, p);
    d = strtod (tmp.c_str (), NULL);
  }

  inline void match_section (char c, std::string &sect)
  {				// c - section char, sect - name of section
    match_char (c);
    match_space ();
    size_t p = line_data.find_first_of ("\n");
    sect = line_data.substr (0, p);
    line_data.erase (0, p);
    match_nl ();
  }

  inline void match_section (char c, double &num)
  {				// c - section char, sect - name of section
    match_char (c);
    match_space ();
    match_number (num);
    match_nl ();
  }

  inline void match_asection (char &c, std::string &sect)
  {				// c - section char, sect - name of section
    match_achar (c);
    match_space ();
    size_t p = line_data.find_first_of ("\n");
    sect = line_data.substr (0, p);
    line_data.erase (0, p);
    match_nl ();
  }

  inline void match_asection (char &c, double &num)
  {				// c - section char, sect - name of section
    match_achar (c);
    match_space ();
    match_number (num);
    match_nl ();
  }
};

#endif