[857] | 1 | #ifndef BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__
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| 2 | #define BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__
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| 3 |
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| 4 | /* Copyright (c) 2003-2004 CrystalClear Software, Inc.
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| 5 | * Subject to the Boost Software License, Version 1.0.
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| 6 | * (See accompanying file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
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| 7 | * Author: Jeff Garland, Bart Garst
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| 8 | * $Date: 2005/06/28 13:11:45 $
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| 9 | */
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| 10 |
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| 11 | #include <iostream>
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| 12 | #include "boost/date_time/local_time/local_date_time.hpp"
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| 13 | #include "boost/date_time/local_time/posix_time_zone.hpp"
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| 14 | #include "boost/date_time/time_facet.hpp"
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| 15 | #include "boost/date_time/string_convert.hpp"
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| 16 | #include "boost/io/ios_state.hpp"
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| 17 |
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| 18 | namespace boost {
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| 19 | namespace local_time {
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| 20 |
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| 21 | typedef boost::date_time::time_facet<local_date_time, wchar_t> wlocal_time_facet;
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| 22 | typedef boost::date_time::time_facet<local_date_time, char> local_time_facet;
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| 23 |
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| 24 | typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,wchar_t> wlocal_time_input_facet;
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| 25 | typedef boost::date_time::time_input_facet<local_date_time::utc_time_type,char> local_time_input_facet;
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| 26 |
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| 27 | //! operator<< for local_date_time - see local_time docs for formatting details
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| 28 | template<class CharT, class TraitsT>
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| 29 | inline
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| 30 | std::basic_ostream<CharT, TraitsT>&
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| 31 | operator<<(std::basic_ostream<CharT, TraitsT>& os, const local_date_time& ldt)
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| 32 | {
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| 33 | boost::io::ios_flags_saver iflags(os);
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| 34 | typedef local_date_time time_type;//::utc_time_type typename
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| 35 | typedef date_time::time_facet<time_type, CharT> custom_time_facet;
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| 36 | typedef std::time_put<CharT> std_time_facet;
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| 37 | std::ostreambuf_iterator<CharT> oitr(os);
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| 38 |
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| 39 | if(std::has_facet<custom_time_facet>(os.getloc())) {
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| 40 | std::use_facet<custom_time_facet>(os.getloc()).put(oitr,
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| 41 | os,
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| 42 | os.fill(),
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| 43 | ldt);
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| 44 | }
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| 45 | else {
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| 46 | custom_time_facet* f = new custom_time_facet();
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| 47 | std::locale l = std::locale(os.getloc(), f);
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| 48 | os.imbue(l);
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| 49 | f->put(oitr, os, os.fill(), ldt);
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| 50 | }
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| 51 |
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| 52 | return os;
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| 53 | }
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| 54 |
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| 55 |
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| 56 | //! input operator for local_date_time
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| 57 | template <class CharT, class Traits>
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| 58 | inline
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| 59 | std::basic_istream<CharT, Traits>&
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| 60 | operator>>(std::basic_istream<CharT, Traits>& is, local_date_time& ldt)
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| 61 | {
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| 62 | boost::io::ios_flags_saver iflags(is);
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| 63 | typename std::basic_istream<CharT, Traits>::sentry strm_sentry(is, false);
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| 64 | if (strm_sentry) {
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| 65 | try {
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| 66 | typedef typename local_date_time::utc_time_type utc_time_type;
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| 67 | typedef typename date_time::time_input_facet<utc_time_type, CharT> time_input_facet;
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| 68 |
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| 69 | // intermediate objects
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| 70 | std::basic_string<CharT> tz_str;
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| 71 | utc_time_type pt(not_a_date_time);
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| 72 |
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| 73 | std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
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| 74 | if(std::has_facet<time_input_facet>(is.getloc())) {
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| 75 | std::use_facet<time_input_facet>(is.getloc()).get_local_time(sit, str_end, is, pt, tz_str);
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| 76 | }
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| 77 | else {
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| 78 | time_input_facet* f = new time_input_facet();
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| 79 | std::locale l = std::locale(is.getloc(), f);
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| 80 | is.imbue(l);
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| 81 | f->get_local_time(sit, str_end, is, pt, tz_str);
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| 82 | }
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| 83 | if(tz_str.empty()) {
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| 84 | time_zone_ptr null_ptr;
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| 85 | // a null time_zone_ptr creates a local_date_time that is UTC
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| 86 | ldt = local_date_time(pt, null_ptr);
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| 87 | }
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| 88 | else {
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| 89 | time_zone_ptr tz_ptr(new posix_time_zone(date_time::convert_string_type<CharT,char>(tz_str)));
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| 90 | // the "date & time" constructor expects the time label to *not* be utc.
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| 91 | // a posix_tz_string also expects the time label to *not* be utc.
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| 92 | ldt = local_date_time(pt.date(), pt.time_of_day(), tz_ptr, local_date_time::EXCEPTION_ON_ERROR);
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| 93 | }
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| 94 | }
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| 95 | catch(...) {
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| 96 | // mask tells us what exceptions are turned on
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| 97 | std::ios_base::iostate exception_mask = is.exceptions();
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| 98 | // if the user wants exceptions on failbit, we'll rethrow our
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| 99 | // date_time exception & set the failbit
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| 100 | if(std::ios_base::failbit & exception_mask) {
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| 101 | try { is.setstate(std::ios_base::failbit); }
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| 102 | catch(std::ios_base::failure&) {} // ignore this one
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| 103 | throw; // rethrow original exception
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| 104 | }
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| 105 | else {
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| 106 | // if the user want's to fail quietly, we simply set the failbit
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| 107 | is.setstate(std::ios_base::failbit);
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| 108 | }
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| 109 |
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| 110 | }
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| 111 | }
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| 112 | return is;
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| 113 | }
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| 114 |
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| 115 |
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| 116 | } } // namespaces
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| 117 |
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| 118 | #endif // BOOST_DATE_TIME_LOCAL_TIME_IO_HPP__
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