| #ifndef BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |
| #define BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |
| |
| /* Copyright (c) 2003-2004 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: 2008-11-13 14:05:31 -0500 (Thu, 13 Nov 2008) $ |
| */ |
| |
| #include <locale> |
| #include <iostream> |
| #include <iterator> // i/ostreambuf_iterator |
| #include <boost/io/ios_state.hpp> |
| #include <boost/date_time/time_facet.hpp> |
| #include <boost/date_time/string_convert.hpp> |
| #include <boost/date_time/local_time/local_date_time.hpp> |
| #include <boost/date_time/local_time/posix_time_zone.hpp> |
| #include <boost/date_time/local_time/conversion.hpp> // to_tm will be needed in the facets |
| |
| namespace boost { |
| namespace local_time { |
| |
| typedef boost::date_time::time_facet<local_date_time, wchar_t> wlocal_time_facet; |
| typedef boost::date_time::time_facet<local_date_time, char> local_time_facet; |
| |
| typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,wchar_t> wlocal_time_input_facet; |
| typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,char> local_time_input_facet; |
| |
| //! operator<< for local_date_time - see local_time docs for formatting details |
| template<class CharT, class TraitsT> |
| inline |
| std::basic_ostream<CharT, TraitsT>& |
| operator<<(std::basic_ostream<CharT, TraitsT>& os, const local_date_time& ldt) |
| { |
| boost::io::ios_flags_saver iflags(os); |
| typedef local_date_time time_type;//::utc_time_type typename |
| typedef date_time::time_facet<time_type, CharT> custom_time_facet; |
| typedef std::time_put<CharT> std_time_facet; |
| std::ostreambuf_iterator<CharT> oitr(os); |
| |
| if(std::has_facet<custom_time_facet>(os.getloc())) { |
| std::use_facet<custom_time_facet>(os.getloc()).put(oitr, |
| os, |
| os.fill(), |
| ldt); |
| } |
| else { |
| custom_time_facet* f = new custom_time_facet(); |
| std::locale l = std::locale(os.getloc(), f); |
| os.imbue(l); |
| f->put(oitr, os, os.fill(), ldt); |
| } |
| |
| return os; |
| } |
| |
| |
| //! input operator for local_date_time |
| template <class CharT, class Traits> |
| inline |
| std::basic_istream<CharT, Traits>& |
| operator>>(std::basic_istream<CharT, Traits>& is, local_date_time& ldt) |
| { |
| boost::io::ios_flags_saver iflags(is); |
| typename std::basic_istream<CharT, Traits>::sentry strm_sentry(is, false); |
| if (strm_sentry) { |
| try { |
| typedef typename local_date_time::utc_time_type utc_time_type; |
| typedef typename date_time::time_input_facet<utc_time_type, CharT> time_input_facet; |
| |
| // intermediate objects |
| std::basic_string<CharT> tz_str; |
| utc_time_type pt(not_a_date_time); |
| |
| std::istreambuf_iterator<CharT,Traits> sit(is), str_end; |
| if(std::has_facet<time_input_facet>(is.getloc())) { |
| std::use_facet<time_input_facet>(is.getloc()).get_local_time(sit, str_end, is, pt, tz_str); |
| } |
| else { |
| time_input_facet* f = new time_input_facet(); |
| std::locale l = std::locale(is.getloc(), f); |
| is.imbue(l); |
| f->get_local_time(sit, str_end, is, pt, tz_str); |
| } |
| if(tz_str.empty()) { |
| time_zone_ptr null_ptr; |
| // a null time_zone_ptr creates a local_date_time that is UTC |
| ldt = local_date_time(pt, null_ptr); |
| } |
| else { |
| time_zone_ptr tz_ptr(new posix_time_zone(date_time::convert_string_type<CharT,char>(tz_str))); |
| // the "date & time" constructor expects the time label to *not* be utc. |
| // a posix_tz_string also expects the time label to *not* be utc. |
| ldt = local_date_time(pt.date(), pt.time_of_day(), tz_ptr, local_date_time::EXCEPTION_ON_ERROR); |
| } |
| } |
| catch(...) { |
| // mask tells us what exceptions are turned on |
| std::ios_base::iostate exception_mask = is.exceptions(); |
| // if the user wants exceptions on failbit, we'll rethrow our |
| // date_time exception & set the failbit |
| if(std::ios_base::failbit & exception_mask) { |
| try { is.setstate(std::ios_base::failbit); } |
| catch(std::ios_base::failure&) {} // ignore this one |
| throw; // rethrow original exception |
| } |
| else { |
| // if the user want's to fail quietly, we simply set the failbit |
| is.setstate(std::ios_base::failbit); |
| } |
| |
| } |
| } |
| return is; |
| } |
| |
| //! output operator for local_time_period |
| template <class CharT, class TraitsT> |
| inline |
| std::basic_ostream<CharT, TraitsT>& |
| operator<<(std::basic_ostream<CharT, TraitsT>& os, |
| const boost::local_time::local_time_period& p) { |
| boost::io::ios_flags_saver iflags(os); |
| typedef boost::date_time::time_facet<local_date_time, CharT> custom_facet; |
| typedef std::time_put<CharT> std_time_facet; |
| std::ostreambuf_iterator<CharT> oitr(os); |
| if (std::has_facet<custom_facet>(os.getloc())) { |
| std::use_facet<custom_facet>(os.getloc()).put(oitr, os, os.fill(), p); |
| } |
| else { |
| //instantiate a custom facet for dealing with periods since the user |
| //has not put one in the stream so far. This is for efficiency |
| //since we would always need to reconstruct for every time period |
| //if the local did not already exist. Of course this will be overridden |
| //if the user imbues as some later point. |
| custom_facet* f = new custom_facet(); |
| std::locale l = std::locale(os.getloc(), f); |
| os.imbue(l); |
| f->put(oitr, os, os.fill(), p); |
| } |
| return os; |
| } |
| |
| //! input operator for local_time_period |
| template <class CharT, class Traits> |
| inline |
| std::basic_istream<CharT, Traits>& |
| operator>>(std::basic_istream<CharT, Traits>& is, boost::local_time::local_time_period& tp) |
| { |
| boost::io::ios_flags_saver iflags(is); |
| typename std::basic_istream<CharT, Traits>::sentry strm_sentry(is, false); |
| if (strm_sentry) { |
| try { |
| typedef typename date_time::time_input_facet<local_date_time, CharT> time_input_facet; |
| |
| std::istreambuf_iterator<CharT,Traits> sit(is), str_end; |
| if(std::has_facet<time_input_facet>(is.getloc())) { |
| std::use_facet<time_input_facet>(is.getloc()).get(sit, str_end, is, tp); |
| } |
| else { |
| time_input_facet* f = new time_input_facet(); |
| std::locale l = std::locale(is.getloc(), f); |
| is.imbue(l); |
| f->get(sit, str_end, is, tp); |
| } |
| } |
| catch(...) { |
| std::ios_base::iostate exception_mask = is.exceptions(); |
| if(std::ios_base::failbit & exception_mask) { |
| try { is.setstate(std::ios_base::failbit); } |
| catch(std::ios_base::failure&) {} |
| throw; // rethrow original exception |
| } |
| else { |
| is.setstate(std::ios_base::failbit); |
| } |
| |
| } |
| } |
| return is; |
| } |
| |
| } } // namespaces |
| |
| #endif // BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |