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#include "std_lib_facilities.h"
using namespace std;
const int not_a_reading=-200;
const int not_a_month=-1;
struct Day
{
vector<double> hour{vector<double>(24, not_a_reading)};
};
struct Month
{
int month {not_a_month};
vector<Day> day{32}; // range 1 to 31 has 32 elements!
};
struct Year
{
int year;
vector<Month> month{12}; //January is 0
};
struct Reading
{
int day;
int hour;
double temperature;
};
vector<string> month_input_tbl={"jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec"};
int month_to_int(string s)
{
for(int i=0; i<12; ++i) if(month_input_tbl[i]==s) return i;
return -1;
}
vector<string> month_print_tbl={"Jan", "Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dic"};
string int_to_month(int i)
{
if(i<0||i>12)error("bad month number");
return month_print_tbl[i];
}
istream& operator>>(istream& is, Reading& r)
{
char ch1;
if(is>>ch1 &&ch1 != '(')
{
is.unget();
is.clear(ios_base::failbit);
return is;
}
char ch2;
int d;
int h;
double t;
is>>d>>h>>t>>ch2;
if(!is||ch2!=')')error("bad reading");
r.day=d;
r.hour=h;
r.temperature=t;
return is;
}
//is.exceptions(is.exeptions()|ios_base::badbit);
void end_of_loop(istream& ist, char term, const string& message)
{
if(ist.fail())
{
ist.clear();
char ch;
if(ist>>ch && ch==term) return;
error(message);
}
}
constexpr int implausibile_min=-200;
constexpr int implausibile_max=200;
bool is_valid(const Reading& r)
{
if(r.day<1||r.day>31)return false;
if(r.hour<0||r.hour>23)return false;
if(r.temperature<implausibile_min||r.temperature>implausibile_max)return false;
return true;
}
istream& operator>>(istream& is, Month& m)
{
char ch=0;
if(is>>ch && ch !='{')
{
is.unget();
is.clear(ios_base::failbit);
return is;
}
string month_marker;
string mm;
is>>month_marker>>mm;
if(!is||month_marker!="month")error("bad start of month");
m.month=month_to_int(mm);
int duplicates=0;
int invalids=0;
for(Reading r; is>>r;)
{
if(is_valid(r))
{
if(m.day[r.day].hour[r.hour]!=not_a_reading)
++duplicates;
m.day[r.day].hour[r.hour]=r.temperature;
}
else
++invalids;
}
if(invalids)error("invalid readings in month",invalids);
if(duplicates)error("duplicates reading in month",duplicates);
end_of_loop(is,'}',"bad end of month");
return is;
}
istream& operator>>(istream&is, Year& y)
{
char ch;
is>>ch;
if(ch!='{')
{
is.unget();
is.clear(ios::failbit);
return is;
}
string year_maker;
int yy;
is>>year_maker>>yy;
if(!is||year_maker!="year")error("bad start of year");
y.year=yy;
while(true)
{
Month m;
if(!(is>>m))break;
y.month[m.month]=m;
}
end_of_loop(is,'}',"bad end of year");
return is;
}
ostream& operator<<(ostream&os, Year& y)
{
/**< return os<<'{'<< y.year
<<','<< int_to_month(month_to_int(y.month[0]))
<<; */
}
int main()
{
cout << "Please enter input file name" << endl;
string iname;
cin>>iname;
ifstream ist {iname};
if(!ist)error("can't open file ", iname);
ist.exceptions(ist.exceptions()|ios_base::badbit);
cout<<"Please enter output file name" << endl;
string oname;
cin>>oname;
ofstream ost{oname};
if(!ost)error("can't open output file ",oname);
vector<Year> ys;
while(true)
{
Year y;
if(!(ist>>y)) break;
ys.push_back(y);
}
cout<<"read "<<ys.size()<< " years of readings\n";
for (Year& y : ys) print_year(ost,y)
return 0;
}
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