template<typename time_type, short utc_offset, typename dst_rule> 
class local_adjustor {
public:
  // types
  typedef time_type::time_duration_type                                                                       time_duration_type;
  typedef time_type::date_type                                                                                date_type;         
  typedef static_local_time_adjustor< time_type, dst_rule, utc_adjustment< time_duration_type, utc_offset > > dst_adjustor;      

  // public static functions
  time_type utc_to_local(const time_type &) ;
  time_type local_to_utc(const time_type &, 
                         date_time::dst_flags = date_time::calculate) ;
};

Description

Use this template to create the timezone to utc convertors as required.

This class will also work for other regions that don't use dst and have a utc offset which is an integral number of hours.

Template Parameters -time_type -- Time class to use -utc_offset -- Number hours local time is adjust from utc -use_dst -- true (default) if region uses dst, false otherwise For example:

  //eastern timezone is utc-5
     typedef date_time::local_adjustor<ptime, -5, us_dst> us_eastern;
     typedef date_time::local_adjustor<ptime, -6, us_dst> us_central;
     typedef date_time::local_adjustor<ptime, -7, us_dst> us_mountain;
     typedef date_time::local_adjustor<ptime, -8, us_dst> us_pacific;
     typedef date_time::local_adjustor<ptime, -7, no_dst> us_arizona;