[44] | 1 | #ifndef BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |
---|
| 2 | #define BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |
---|
| 3 | |
---|
| 4 | /* Copyright (c) 2003-2004 CrystalClear Software, Inc. |
---|
| 5 | * Subject to the Boost Software License, Version 1.0. |
---|
| 6 | * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
---|
| 7 | * Author: Jeff Garland, Bart Garst |
---|
| 8 | * $Date: 2008-11-13 14:05:31 -0500 (Thu, 13 Nov 2008) $ |
---|
| 9 | */ |
---|
| 10 | |
---|
| 11 | #include <locale> |
---|
| 12 | #include <iostream> |
---|
| 13 | #include <iterator> // i/ostreambuf_iterator |
---|
| 14 | #include <boost/io/ios_state.hpp> |
---|
| 15 | #include <boost/date_time/time_facet.hpp> |
---|
| 16 | #include <boost/date_time/string_convert.hpp> |
---|
| 17 | #include <boost/date_time/local_time/local_date_time.hpp> |
---|
| 18 | #include <boost/date_time/local_time/posix_time_zone.hpp> |
---|
| 19 | #include <boost/date_time/local_time/conversion.hpp> // to_tm will be needed in the facets |
---|
| 20 | |
---|
| 21 | namespace boost { |
---|
| 22 | namespace local_time { |
---|
| 23 | |
---|
| 24 | typedef boost::date_time::time_facet<local_date_time, wchar_t> wlocal_time_facet; |
---|
| 25 | typedef boost::date_time::time_facet<local_date_time, char> local_time_facet; |
---|
| 26 | |
---|
| 27 | typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,wchar_t> wlocal_time_input_facet; |
---|
| 28 | typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,char> local_time_input_facet; |
---|
| 29 | |
---|
| 30 | //! operator<< for local_date_time - see local_time docs for formatting details |
---|
| 31 | template<class CharT, class TraitsT> |
---|
| 32 | inline |
---|
| 33 | std::basic_ostream<CharT, TraitsT>& |
---|
| 34 | operator<<(std::basic_ostream<CharT, TraitsT>& os, const local_date_time& ldt) |
---|
| 35 | { |
---|
| 36 | boost::io::ios_flags_saver iflags(os); |
---|
| 37 | typedef local_date_time time_type;//::utc_time_type typename |
---|
| 38 | typedef date_time::time_facet<time_type, CharT> custom_time_facet; |
---|
| 39 | typedef std::time_put<CharT> std_time_facet; |
---|
| 40 | std::ostreambuf_iterator<CharT> oitr(os); |
---|
| 41 | |
---|
| 42 | if(std::has_facet<custom_time_facet>(os.getloc())) { |
---|
| 43 | std::use_facet<custom_time_facet>(os.getloc()).put(oitr, |
---|
| 44 | os, |
---|
| 45 | os.fill(), |
---|
| 46 | ldt); |
---|
| 47 | } |
---|
| 48 | else { |
---|
| 49 | custom_time_facet* f = new custom_time_facet(); |
---|
| 50 | std::locale l = std::locale(os.getloc(), f); |
---|
| 51 | os.imbue(l); |
---|
| 52 | f->put(oitr, os, os.fill(), ldt); |
---|
| 53 | } |
---|
| 54 | |
---|
| 55 | return os; |
---|
| 56 | } |
---|
| 57 | |
---|
| 58 | |
---|
| 59 | //! input operator for local_date_time |
---|
| 60 | template <class CharT, class Traits> |
---|
| 61 | inline |
---|
| 62 | std::basic_istream<CharT, Traits>& |
---|
| 63 | operator>>(std::basic_istream<CharT, Traits>& is, local_date_time& ldt) |
---|
| 64 | { |
---|
| 65 | boost::io::ios_flags_saver iflags(is); |
---|
| 66 | typename std::basic_istream<CharT, Traits>::sentry strm_sentry(is, false); |
---|
| 67 | if (strm_sentry) { |
---|
| 68 | try { |
---|
| 69 | typedef typename local_date_time::utc_time_type utc_time_type; |
---|
| 70 | typedef typename date_time::time_input_facet<utc_time_type, CharT> time_input_facet; |
---|
| 71 | |
---|
| 72 | // intermediate objects |
---|
| 73 | std::basic_string<CharT> tz_str; |
---|
| 74 | utc_time_type pt(not_a_date_time); |
---|
| 75 | |
---|
| 76 | std::istreambuf_iterator<CharT,Traits> sit(is), str_end; |
---|
| 77 | if(std::has_facet<time_input_facet>(is.getloc())) { |
---|
| 78 | std::use_facet<time_input_facet>(is.getloc()).get_local_time(sit, str_end, is, pt, tz_str); |
---|
| 79 | } |
---|
| 80 | else { |
---|
| 81 | time_input_facet* f = new time_input_facet(); |
---|
| 82 | std::locale l = std::locale(is.getloc(), f); |
---|
| 83 | is.imbue(l); |
---|
| 84 | f->get_local_time(sit, str_end, is, pt, tz_str); |
---|
| 85 | } |
---|
| 86 | if(tz_str.empty()) { |
---|
| 87 | time_zone_ptr null_ptr; |
---|
| 88 | // a null time_zone_ptr creates a local_date_time that is UTC |
---|
| 89 | ldt = local_date_time(pt, null_ptr); |
---|
| 90 | } |
---|
| 91 | else { |
---|
| 92 | time_zone_ptr tz_ptr(new posix_time_zone(date_time::convert_string_type<CharT,char>(tz_str))); |
---|
| 93 | // the "date & time" constructor expects the time label to *not* be utc. |
---|
| 94 | // a posix_tz_string also expects the time label to *not* be utc. |
---|
| 95 | ldt = local_date_time(pt.date(), pt.time_of_day(), tz_ptr, local_date_time::EXCEPTION_ON_ERROR); |
---|
| 96 | } |
---|
| 97 | } |
---|
| 98 | catch(...) { |
---|
| 99 | // mask tells us what exceptions are turned on |
---|
| 100 | std::ios_base::iostate exception_mask = is.exceptions(); |
---|
| 101 | // if the user wants exceptions on failbit, we'll rethrow our |
---|
| 102 | // date_time exception & set the failbit |
---|
| 103 | if(std::ios_base::failbit & exception_mask) { |
---|
| 104 | try { is.setstate(std::ios_base::failbit); } |
---|
| 105 | catch(std::ios_base::failure&) {} // ignore this one |
---|
| 106 | throw; // rethrow original exception |
---|
| 107 | } |
---|
| 108 | else { |
---|
| 109 | // if the user want's to fail quietly, we simply set the failbit |
---|
| 110 | is.setstate(std::ios_base::failbit); |
---|
| 111 | } |
---|
| 112 | |
---|
| 113 | } |
---|
| 114 | } |
---|
| 115 | return is; |
---|
| 116 | } |
---|
| 117 | |
---|
| 118 | //! output operator for local_time_period |
---|
| 119 | template <class CharT, class TraitsT> |
---|
| 120 | inline |
---|
| 121 | std::basic_ostream<CharT, TraitsT>& |
---|
| 122 | operator<<(std::basic_ostream<CharT, TraitsT>& os, |
---|
| 123 | const boost::local_time::local_time_period& p) { |
---|
| 124 | boost::io::ios_flags_saver iflags(os); |
---|
| 125 | typedef boost::date_time::time_facet<local_date_time, CharT> custom_facet; |
---|
| 126 | typedef std::time_put<CharT> std_time_facet; |
---|
| 127 | std::ostreambuf_iterator<CharT> oitr(os); |
---|
| 128 | if (std::has_facet<custom_facet>(os.getloc())) { |
---|
| 129 | std::use_facet<custom_facet>(os.getloc()).put(oitr, os, os.fill(), p); |
---|
| 130 | } |
---|
| 131 | else { |
---|
| 132 | //instantiate a custom facet for dealing with periods since the user |
---|
| 133 | //has not put one in the stream so far. This is for efficiency |
---|
| 134 | //since we would always need to reconstruct for every time period |
---|
| 135 | //if the local did not already exist. Of course this will be overridden |
---|
| 136 | //if the user imbues as some later point. |
---|
| 137 | custom_facet* f = new custom_facet(); |
---|
| 138 | std::locale l = std::locale(os.getloc(), f); |
---|
| 139 | os.imbue(l); |
---|
| 140 | f->put(oitr, os, os.fill(), p); |
---|
| 141 | } |
---|
| 142 | return os; |
---|
| 143 | } |
---|
| 144 | |
---|
| 145 | //! input operator for local_time_period |
---|
| 146 | template <class CharT, class Traits> |
---|
| 147 | inline |
---|
| 148 | std::basic_istream<CharT, Traits>& |
---|
| 149 | operator>>(std::basic_istream<CharT, Traits>& is, boost::local_time::local_time_period& tp) |
---|
| 150 | { |
---|
| 151 | boost::io::ios_flags_saver iflags(is); |
---|
| 152 | typename std::basic_istream<CharT, Traits>::sentry strm_sentry(is, false); |
---|
| 153 | if (strm_sentry) { |
---|
| 154 | try { |
---|
| 155 | typedef typename date_time::time_input_facet<local_date_time, CharT> time_input_facet; |
---|
| 156 | |
---|
| 157 | std::istreambuf_iterator<CharT,Traits> sit(is), str_end; |
---|
| 158 | if(std::has_facet<time_input_facet>(is.getloc())) { |
---|
| 159 | std::use_facet<time_input_facet>(is.getloc()).get(sit, str_end, is, tp); |
---|
| 160 | } |
---|
| 161 | else { |
---|
| 162 | time_input_facet* f = new time_input_facet(); |
---|
| 163 | std::locale l = std::locale(is.getloc(), f); |
---|
| 164 | is.imbue(l); |
---|
| 165 | f->get(sit, str_end, is, tp); |
---|
| 166 | } |
---|
| 167 | } |
---|
| 168 | catch(...) { |
---|
| 169 | std::ios_base::iostate exception_mask = is.exceptions(); |
---|
| 170 | if(std::ios_base::failbit & exception_mask) { |
---|
| 171 | try { is.setstate(std::ios_base::failbit); } |
---|
| 172 | catch(std::ios_base::failure&) {} |
---|
| 173 | throw; // rethrow original exception |
---|
| 174 | } |
---|
| 175 | else { |
---|
| 176 | is.setstate(std::ios_base::failbit); |
---|
| 177 | } |
---|
| 178 | |
---|
| 179 | } |
---|
| 180 | } |
---|
| 181 | return is; |
---|
| 182 | } |
---|
| 183 | |
---|
| 184 | } } // namespaces |
---|
| 185 | |
---|
| 186 | #endif // BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__ |
---|