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Diffstat (limited to '3rdParty/Boost/src/boost/date_time/time_zone_base.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/date_time/time_zone_base.hpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/date_time/time_zone_base.hpp b/3rdParty/Boost/src/boost/date_time/time_zone_base.hpp new file mode 100644 index 0000000..0d3cb90 --- /dev/null +++ b/3rdParty/Boost/src/boost/date_time/time_zone_base.hpp @@ -0,0 +1,99 @@ +#ifndef _DATE_TIME_TIME_ZONE_BASE__ +#define _DATE_TIME_TIME_ZONE_BASE__ + +/* Copyright (c) 2003-2005 CrystalClear Software, Inc. + * Subject to the Boost Software License, Version 1.0. + * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) + * Author: Jeff Garland, Bart Garst + * $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ + */ + + +#include <string> +#include <sstream> + +namespace boost { +namespace date_time { + + + + //! Interface class for dynamic time zones. + /*! This class represents the base interface for all timezone + * representations. Subclasses may provide different systems + * for identifying a particular zone. For example some may + * provide a geographical based zone construction while others + * may specify the offset from GMT. Another possible implementation + * would be to convert from POSIX timezone strings. Regardless of + * the construction technique, this is the interface that these + * time zone types must provide. + * + * Note that this class is intended to be used as a shared + * resource (hence the derivation from boost::counted_base. + */ + template<typename time_type, typename CharT> + class time_zone_base { + public: + typedef CharT char_type; + typedef std::basic_string<CharT> string_type; + typedef std::basic_ostringstream<CharT> stringstream_type; + typedef typename time_type::date_type::year_type year_type; + typedef typename time_type::time_duration_type time_duration_type; + + time_zone_base() {}; + virtual ~time_zone_base() {}; + //!String for the timezone when in daylight savings (eg: EDT) + virtual string_type dst_zone_abbrev() const=0; + //!String for the zone when not in daylight savings (eg: EST) + virtual string_type std_zone_abbrev() const=0; + //!String for the timezone when in daylight savings (eg: Eastern Daylight Time) + virtual string_type dst_zone_name() const=0; + //!String for the zone when not in daylight savings (eg: Eastern Standard Time) + virtual string_type std_zone_name() const=0; + //! True if zone uses daylight savings adjustments otherwise false + virtual bool has_dst() const=0; + //! Local time that DST starts -- undefined if has_dst is false + virtual time_type dst_local_start_time(year_type y) const=0; + //! Local time that DST ends -- undefined if has_dst is false + virtual time_type dst_local_end_time(year_type y) const=0; + //! Base offset from UTC for zone (eg: -07:30:00) + virtual time_duration_type base_utc_offset() const=0; + //! Adjustment forward or back made while DST is in effect + virtual time_duration_type dst_offset() const=0; + //! Returns a POSIX time_zone string for this object + virtual string_type to_posix_string() const =0; + + private: + + }; + + + //! Structure which holds the time offsets associated with daylight savings time + /*! + *@param time_duration_type A type used to represent the offset + */ + template<class time_duration_type> + class dst_adjustment_offsets + { + public: + dst_adjustment_offsets(const time_duration_type& dst_adjust, + const time_duration_type& dst_start_offset, + const time_duration_type& dst_end_offset) : + dst_adjust_(dst_adjust), + dst_start_offset_(dst_start_offset), + dst_end_offset_(dst_end_offset) + {} + + //! Amount DST adjusts the clock eg: plus one hour + time_duration_type dst_adjust_; + //! Time past midnight on start transition day that dst starts + time_duration_type dst_start_offset_; + //! Time past midnight on end transition day that dst ends + time_duration_type dst_end_offset_; + }; + + +} } //namespace date_time + + + +#endif |