boost/date_time/gregorian/gregorian_io.hpp
#ifndef DATE_TIME_GREGORIAN_IO_HPP__
#define DATE_TIME_GREGORIAN_IO_HPP__
/* Copyright (c) 2004-2005 CrystalClear Software, Inc.
* Use, modification and distribution is 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: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $
*/
#include <locale>
#include <iostream>
#include <iterator> // i/ostreambuf_iterator
#include <boost/io/ios_state.hpp>
#include <boost/date_time/date_facet.hpp>
#include <boost/date_time/period_parser.hpp>
#include <boost/date_time/period_formatter.hpp>
#include <boost/date_time/special_values_parser.hpp>
#include <boost/date_time/special_values_formatter.hpp>
#include <boost/date_time/gregorian/gregorian_types.hpp>
#include <boost/date_time/gregorian/conversion.hpp> // to_tm will be needed in the facets
namespace boost {
namespace gregorian {
typedef boost::date_time::period_formatter<wchar_t> wperiod_formatter;
typedef boost::date_time::period_formatter<char> period_formatter;
typedef boost::date_time::date_facet<date,wchar_t> wdate_facet;
typedef boost::date_time::date_facet<date,char> date_facet;
typedef boost::date_time::period_parser<date,char> period_parser;
typedef boost::date_time::period_parser<date,wchar_t> wperiod_parser;
typedef boost::date_time::special_values_formatter<char> special_values_formatter;
typedef boost::date_time::special_values_formatter<wchar_t> wspecial_values_formatter;
typedef boost::date_time::special_values_parser<date,char> special_values_parser;
typedef boost::date_time::special_values_parser<date,wchar_t> wspecial_values_parser;
typedef boost::date_time::date_input_facet<date,char> date_input_facet;
typedef boost::date_time::date_input_facet<date,wchar_t> wdate_input_facet;
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::date& d) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), d);
else {
//instantiate a custom facet for dealing with dates 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 date
//if the locale did not already exist. Of course this will be overridden
//if the user imbues at some later point. With the default settings
//for the facet the resulting format will be the same as the
//std::time_facet settings.
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), d);
}
return os;
}
//! input operator for date
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, date& d)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, d);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, d);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::date_duration& dd) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), dd);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), dd);
}
return os;
}
//! input operator for date_duration
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, date_duration& dd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, dd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, dd);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::date_period& dp) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), dp);
else {
//instantiate a custom facet for dealing with date 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 at some later point. With the default settings
//for the facet the resulting format will be the same as the
//std::time_facet settings.
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), dp);
}
return os;
}
//! input operator for date_period
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, date_period& dp)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, dp);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, dp);
}
}
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;
}
/********** small gregorian types **********/
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::greg_month& gm) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), gm);
else {
custom_date_facet* f = new custom_date_facet();//-> 10/1074199752/32 because year & day not initialized in put(...)
//custom_date_facet* f = new custom_date_facet("%B");
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), gm);
}
return os;
}
//! input operator for greg_month
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, greg_month& m)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, m);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, m);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::greg_weekday& gw) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), gw);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), gw);
}
return os;
}
//! input operator for greg_weekday
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, greg_weekday& wd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, wd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, wd);
}
}
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;
}
//NOTE: output operator for greg_day was not necessary
//! input operator for greg_day
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, greg_day& gd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, gd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, gd);
}
}
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;
}
//NOTE: output operator for greg_year was not necessary
//! input operator for greg_year
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, greg_year& gy)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, gy);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, gy);
}
}
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;
}
/********** date generator types **********/
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::partial_date& pd) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), pd);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), pd);
}
return os;
}
//! input operator for partial_date
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is, partial_date& pd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, pd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, pd);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::nth_day_of_the_week_in_month& nkd) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), nkd);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), nkd);
}
return os;
}
//! input operator for nth_day_of_the_week_in_month
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
nth_day_of_the_week_in_month& nday)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, nday);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, nday);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::first_day_of_the_week_in_month& fkd) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), fkd);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), fkd);
}
return os;
}
//! input operator for first_day_of_the_week_in_month
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
first_day_of_the_week_in_month& fkd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, fkd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, fkd);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::last_day_of_the_week_in_month& lkd) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc()))
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), lkd);
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), lkd);
}
return os;
}
//! input operator for last_day_of_the_week_in_month
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
last_day_of_the_week_in_month& lkd)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, lkd);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, lkd);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::first_day_of_the_week_after& fda) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc())) {
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), fda);
}
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), fda);
}
return os;
}
//! input operator for first_day_of_the_week_after
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
first_day_of_the_week_after& fka)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, fka);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, fka);
}
}
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;
}
template <class CharT, class TraitsT>
inline std::basic_ostream<CharT, TraitsT>&
operator<<(std::basic_ostream<CharT, TraitsT>& os, const boost::gregorian::first_day_of_the_week_before& fdb) {
boost::io::ios_flags_saver iflags(os);
typedef boost::date_time::date_facet<date, CharT> custom_date_facet;
std::ostreambuf_iterator<CharT> output_itr(os);
if (std::has_facet<custom_date_facet>(os.getloc())) {
std::use_facet<custom_date_facet>(os.getloc()).put(output_itr, os, os.fill(), fdb);
}
else {
custom_date_facet* f = new custom_date_facet();
std::locale l = std::locale(os.getloc(), f);
os.imbue(l);
f->put(output_itr, os, os.fill(), fdb);
}
return os;
}
//! input operator for first_day_of_the_week_before
template <class CharT, class Traits>
inline
std::basic_istream<CharT, Traits>&
operator>>(std::basic_istream<CharT, Traits>& is,
first_day_of_the_week_before& fkb)
{
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::date_input_facet<date, CharT> date_input_facet;
std::istreambuf_iterator<CharT,Traits> sit(is), str_end;
if(std::has_facet<date_input_facet>(is.getloc())) {
std::use_facet<date_input_facet>(is.getloc()).get(sit, str_end, is, fkb);
}
else {
date_input_facet* f = new date_input_facet();
std::locale l = std::locale(is.getloc(), f);
is.imbue(l);
f->get(sit, str_end, is, fkb);
}
}
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 // DATE_TIME_GREGORIAN_IO_HPP__