wh.d

  1 import std.conv,
  2        std.json,
  3        std.stdio,
  4        std.net.curl;
  5 
  6 auto getTemperatureString(in JSONValue temperature) in {
  7     assert(temperature.type == JSON_TYPE.OBJECT);
  8 } body {
  9     if(temperature["max"].type != JSON_TYPE.NULL && temperature["min"].type != JSON_TYPE.NULL)
 10         return "最高気温: " ~ temperature["max"].object["celsius"].str ~ "℃\n"
 11             ~ "最低気温: " ~ temperature["min"].object["celsius"].str ~ "℃\n";
 12     else
 13         return "";
 14 }
 15 
 16 auto makeReport(in JSONValue forecast) in {
 17     assert(forecast.type == JSON_TYPE.OBJECT);
 18 } body {
 19     return forecast["dateLabel"].str ~ "の予報" ~ '\n' ~ "予報: " ~ forecast["telop"].str ~ '\n'
 20         ~ forecast["temperature"].getTemperatureString;
 21 }
 22 
 23 void main(string[] args) {
 24     immutable cityNo = args.length > 1 ? args[1].to!uint : 130010u;
 25     immutable restURI = "http://weather.livedoor.com/forecast/webservice/json/v1";
 26     immutable weather = get(restURI ~ "?city=" ~ cityNo.to!string).parseJSON;
 27     immutable forecasts = weather["forecasts"].array;
 28     immutable title = weather["title"].str;
 29 
 30     title.writeln;
 31     writeln;
 32     foreach(f; forecasts) {
 33         f.makeReport.writeln;
 34     }
 35 }