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ext-boost/boost/date_time/time_facet.hpp

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Update boost to 1.71 and add asio
2019-08-24 13:39:04 +00:00
#ifndef _DATE_TIME_FACET__HPP__
#define _DATE_TIME_FACET__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: Martin Andrian, Jeff Garland, Bart Garst
* $Date$
*/
#include <cctype>
#include <locale>
#include <limits>
#include <string>
#include <sstream>
#include <iomanip>
#include <iterator> // i/ostreambuf_iterator
#include <exception>
#include <boost/assert.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/throw_exception.hpp>
#include <boost/range/as_literal.hpp>
#include <boost/algorithm/string/erase.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <boost/date_time/compiler_config.hpp>
#include <boost/date_time/date_facet.hpp>
#include <boost/date_time/string_convert.hpp>
#include <boost/date_time/special_defs.hpp>
#include <boost/date_time/time_resolution_traits.hpp> // absolute_value
namespace boost {
namespace date_time {
template <class CharT>
struct time_formats {
public:
typedef CharT char_type;
static const char_type fractional_seconds_format[3]; // f
static const char_type fractional_seconds_or_none_format[3]; // F
static const char_type seconds_with_fractional_seconds_format[3]; // s
static const char_type seconds_format[3]; // S
static const char_type hours_format[3]; // H
static const char_type unrestricted_hours_format[3]; // O
static const char_type full_24_hour_time_format[3]; // T
static const char_type full_24_hour_time_expanded_format[9]; // HH:MM:SS
static const char_type short_24_hour_time_format[3]; // R
static const char_type short_24_hour_time_expanded_format[6]; // HH:MM
static const char_type standard_format[9]; // x X
static const char_type zone_abbrev_format[3]; // z
static const char_type zone_name_format[3]; // Z
static const char_type zone_iso_format[3]; // q
static const char_type zone_iso_extended_format[3]; // Q
static const char_type posix_zone_string_format[4]; // ZP
static const char_type duration_sign_negative_only[3]; // -
static const char_type duration_sign_always[3]; // +
static const char_type duration_seperator[2];
static const char_type negative_sign[2]; //-
static const char_type positive_sign[2]; //+
static const char_type iso_time_format_specifier[18];
static const char_type iso_time_format_extended_specifier[22];
//default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
static const char_type default_time_format[23];
// default_time_input_format uses a posix_time_zone_string instead of a time zone abbrev
static const char_type default_time_input_format[24];
//default time_duration format is HH:MM:SS[.fff...]
static const char_type default_time_duration_format[11];
};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::fractional_seconds_format[3] = {'%','f'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::fractional_seconds_or_none_format[3] = {'%','F'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::seconds_with_fractional_seconds_format[3] = {'%','s'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::seconds_format[3] = {'%','S'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::hours_format[3] = {'%','H'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::unrestricted_hours_format[3] = {'%','O'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::full_24_hour_time_format[3] = {'%','T'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::full_24_hour_time_expanded_format[9] =
{'%','H',':','%','M',':','%','S'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::short_24_hour_time_format[3] = {'%','R'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::short_24_hour_time_expanded_format[6] =
{'%','H',':','%','M'};
template <class CharT>
const typename time_formats<CharT>::char_type
//time_formats<CharT>::standard_format[5] = {'%','c',' ','%','z'};
time_formats<CharT>::standard_format[9] = {'%','x',' ','%','X',' ','%','z'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::zone_abbrev_format[3] = {'%','z'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::zone_name_format[3] = {'%','Z'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::zone_iso_format[3] = {'%','q'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::zone_iso_extended_format[3] ={'%','Q'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::posix_zone_string_format[4] ={'%','Z','P'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::duration_seperator[2] = {':'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::negative_sign[2] = {'-'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::positive_sign[2] = {'+'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::duration_sign_negative_only[3] ={'%','-'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::duration_sign_always[3] ={'%','+'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::iso_time_format_specifier[18] =
{'%', 'Y', '%', 'm', '%', 'd', 'T',
'%', 'H', '%', 'M', '%', 'S', '%', 'F', '%','q' };
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::iso_time_format_extended_specifier[22] =
{'%', 'Y', '-', '%', 'm', '-', '%', 'd', ' ',
'%', 'H', ':', '%', 'M', ':', '%', 'S', '%', 'F','%','Q'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::default_time_format[23] =
{'%','Y','-','%','b','-','%','d',' ',
'%','H',':','%','M',':','%','S','%','F',' ','%','z'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::default_time_input_format[24] =
{'%','Y','-','%','b','-','%','d',' ',
'%','H',':','%','M',':','%','S','%','F',' ','%','Z','P'};
template <class CharT>
const typename time_formats<CharT>::char_type
time_formats<CharT>::default_time_duration_format[11] =
{'%','O',':','%','M',':','%','S','%','F'};
/*! Facet used for format-based output of time types
* This class provides for the use of format strings to output times. In addition
* to the flags for formatting date elements, the following are the allowed format flags:
* - %x %X => default format - enables addition of more flags to default (ie. "%x %X %z")
* - %f => fractional seconds ".123456"
* - %F => fractional seconds or none: like frac sec but empty if frac sec == 0
* - %s => seconds w/ fractional sec "02.123" (this is the same as "%S%f)
* - %S => seconds "02"
* - %z => abbreviated time zone "EDT"
* - %Z => full time zone name "Eastern Daylight Time"
*/
template <class time_type,
class CharT,
class OutItrT = std::ostreambuf_iterator<CharT, std::char_traits<CharT> > >
class BOOST_SYMBOL_VISIBLE time_facet :
public boost::date_time::date_facet<typename time_type::date_type , CharT, OutItrT> {
typedef time_formats< CharT > formats_type;
public:
typedef typename time_type::date_type date_type;
typedef typename time_type::time_duration_type time_duration_type;
typedef boost::date_time::period<time_type,time_duration_type> period_type;
typedef boost::date_time::date_facet<typename time_type::date_type, CharT, OutItrT> base_type;
typedef typename base_type::string_type string_type;
typedef typename base_type::char_type char_type;
typedef typename base_type::period_formatter_type period_formatter_type;
typedef typename base_type::special_values_formatter_type special_values_formatter_type;
typedef typename base_type::date_gen_formatter_type date_gen_formatter_type;
static const char_type* fractional_seconds_format; // %f
static const char_type* fractional_seconds_or_none_format; // %F
static const char_type* seconds_with_fractional_seconds_format; // %s
static const char_type* seconds_format; // %S
static const char_type* hours_format; // %H
static const char_type* unrestricted_hours_format; // %O
static const char_type* standard_format; // %x X
static const char_type* zone_abbrev_format; // %z
static const char_type* zone_name_format; // %Z
static const char_type* zone_iso_format; // %q
static const char_type* zone_iso_extended_format; // %Q
static const char_type* posix_zone_string_format; // %ZP
static const char_type* duration_seperator;
static const char_type* duration_sign_always; // %+
static const char_type* duration_sign_negative_only; // %-
static const char_type* negative_sign; //-
static const char_type* positive_sign; //+
static const char_type* iso_time_format_specifier;
static const char_type* iso_time_format_extended_specifier;
//default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
static const char_type* default_time_format;
//default time_duration format is HH:MM:SS[.fff...]
static const char_type* default_time_duration_format;
static std::locale::id id;
#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
std::locale::id& __get_id (void) const { return id; }
#endif
//! sets default formats for ptime, local_date_time, and time_duration
explicit time_facet(::size_t ref_arg = 0)
: base_type(default_time_format, period_formatter_type(), special_values_formatter_type(), date_gen_formatter_type(), ref_arg),
m_time_duration_format(string_type(duration_sign_negative_only) + default_time_duration_format)
{}
//! Construct the facet with an explicitly specified format
explicit time_facet(const char_type* format_arg,
period_formatter_type period_formatter_arg = period_formatter_type(),
const special_values_formatter_type& special_value_formatter = special_values_formatter_type(),
date_gen_formatter_type dg_formatter = date_gen_formatter_type(),
::size_t ref_arg = 0)
: base_type(format_arg,
period_formatter_arg,
special_value_formatter,
dg_formatter,
ref_arg),
m_time_duration_format(string_type(duration_sign_negative_only) + default_time_duration_format)
{}
//! Changes format for time_duration
void time_duration_format(const char_type* const format)
{
m_time_duration_format = format;
}
virtual void set_iso_format()
{
this->m_format = iso_time_format_specifier;
}
virtual void set_iso_extended_format()
{
this->m_format = iso_time_format_extended_specifier;
}
OutItrT put(OutItrT next_arg,
std::ios_base& ios_arg,
char_type fill_arg,
const time_type& time_arg) const
{
if (time_arg.is_special()) {
return this->do_put_special(next_arg, ios_arg, fill_arg,
time_arg.date().as_special());
}
string_type local_format(this->m_format);
// %T and %R have to be replaced here since they are not standard
boost::algorithm::replace_all(local_format,
boost::as_literal(formats_type::full_24_hour_time_format),
boost::as_literal(formats_type::full_24_hour_time_expanded_format));
boost::algorithm::replace_all(local_format,
boost::as_literal(formats_type::short_24_hour_time_format),
boost::as_literal(formats_type::short_24_hour_time_expanded_format));
string_type frac_str;
if (local_format.find(seconds_with_fractional_seconds_format) != string_type::npos) {
// replace %s with %S.nnn
frac_str =
fractional_seconds_as_string(time_arg.time_of_day(), false);
char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
string_type replace_string(seconds_format);
replace_string += sep;
replace_string += frac_str;
boost::algorithm::replace_all(local_format,
seconds_with_fractional_seconds_format,
replace_string);
}
/* NOTE: replacing posix_zone_string_format must be done BEFORE
* zone_name_format: "%ZP" & "%Z", if Z is checked first it will
* incorrectly replace a zone_name where a posix_string should go */
if (local_format.find(posix_zone_string_format) != string_type::npos) {
if(time_arg.zone_abbrev().empty()) {
// if zone_abbrev() returns an empty string, we want to
// erase posix_zone_string_format from format
boost::algorithm::erase_all(local_format, posix_zone_string_format);
}
else{
boost::algorithm::replace_all(local_format,
posix_zone_string_format,
time_arg.zone_as_posix_string());
}
}
if (local_format.find(zone_name_format) != string_type::npos) {
if(time_arg.zone_name().empty()) {
/* TODO: this'll probably create problems if a user places
* the zone_*_format flag in the format with a ptime. This
* code removes the flag from the default formats */
// if zone_name() returns an empty string, we want to
// erase zone_name_format & one preceeding space
std::basic_ostringstream<char_type> ss;
ss << ' ' << zone_name_format;
boost::algorithm::erase_all(local_format, ss.str());
}
else{
boost::algorithm::replace_all(local_format,
zone_name_format,
time_arg.zone_name());
}
}
if (local_format.find(zone_abbrev_format) != string_type::npos) {
if(time_arg.zone_abbrev(false).empty()) {
/* TODO: this'll probably create problems if a user places
* the zone_*_format flag in the format with a ptime. This
* code removes the flag from the default formats */
// if zone_abbrev() returns an empty string, we want to
// erase zone_abbrev_format & one preceeding space
std::basic_ostringstream<char_type> ss;
ss << ' ' << zone_abbrev_format;
boost::algorithm::erase_all(local_format, ss.str());
}
else{
boost::algorithm::replace_all(local_format,
zone_abbrev_format,
time_arg.zone_abbrev(false));
}
}
if (local_format.find(zone_iso_extended_format) != string_type::npos) {
if(time_arg.zone_name(true).empty()) {
/* TODO: this'll probably create problems if a user places
* the zone_*_format flag in the format with a ptime. This
* code removes the flag from the default formats */
// if zone_name() returns an empty string, we want to
// erase zone_iso_extended_format from format
boost::algorithm::erase_all(local_format, zone_iso_extended_format);
}
else{
boost::algorithm::replace_all(local_format,
zone_iso_extended_format,
time_arg.zone_name(true));
}
}
if (local_format.find(zone_iso_format) != string_type::npos) {
if(time_arg.zone_abbrev(true).empty()) {
/* TODO: this'll probably create problems if a user places
* the zone_*_format flag in the format with a ptime. This
* code removes the flag from the default formats */
// if zone_abbrev() returns an empty string, we want to
// erase zone_iso_format from format
boost::algorithm::erase_all(local_format, zone_iso_format);
}
else{
boost::algorithm::replace_all(local_format,
zone_iso_format,
time_arg.zone_abbrev(true));
}
}
if (local_format.find(fractional_seconds_format) != string_type::npos) {
// replace %f with nnnnnnn
if (frac_str.empty()) {
frac_str = fractional_seconds_as_string(time_arg.time_of_day(), false);
}
boost::algorithm::replace_all(local_format,
fractional_seconds_format,
frac_str);
}
if (local_format.find(fractional_seconds_or_none_format) != string_type::npos) {
// replace %F with nnnnnnn or nothing if fs == 0
frac_str =
fractional_seconds_as_string(time_arg.time_of_day(), true);
if (frac_str.size()) {
char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
string_type replace_string;
replace_string += sep;
replace_string += frac_str;
boost::algorithm::replace_all(local_format,
fractional_seconds_or_none_format,
replace_string);
}
else {
boost::algorithm::erase_all(local_format,
fractional_seconds_or_none_format);
}
}
return this->do_put_tm(next_arg, ios_arg, fill_arg,
to_tm(time_arg), local_format);
}
//! put function for time_duration
OutItrT put(OutItrT next_arg,
std::ios_base& ios_arg,
char_type fill_arg,
const time_duration_type& time_dur_arg) const
{
if (time_dur_arg.is_special()) {
return this->do_put_special(next_arg, ios_arg, fill_arg,
time_dur_arg.get_rep().as_special());
}
string_type format(m_time_duration_format);
if (time_dur_arg.is_negative()) {
// replace %- with minus sign. Should we use the numpunct facet?
boost::algorithm::replace_all(format,
duration_sign_negative_only,
negative_sign);
// remove all the %+ in the string with '-'
boost::algorithm::replace_all(format,
duration_sign_always,
negative_sign);
}
else { //duration is positive
// remove all the %- combos from the string
boost::algorithm::erase_all(format, duration_sign_negative_only);
// remove all the %+ in the string with '+'
boost::algorithm::replace_all(format,
duration_sign_always,
positive_sign);
}
// %T and %R have to be replaced here since they are not standard
boost::algorithm::replace_all(format,
boost::as_literal(formats_type::full_24_hour_time_format),
boost::as_literal(formats_type::full_24_hour_time_expanded_format));
boost::algorithm::replace_all(format,
boost::as_literal(formats_type::short_24_hour_time_format),
boost::as_literal(formats_type::short_24_hour_time_expanded_format));
/*
* It is possible for a time duration to span more then 24 hours.
* Standard time_put::put is obliged to behave the same as strftime
* (See ISO 14882-2003 22.2.5.3.1 par. 1) and strftime's behavior is
* unspecified for the case when tm_hour field is outside 0-23 range
* (See ISO 9899-1999 7.23.3.5 par. 3). So we must output %H and %O
* here ourself.
*/
string_type hours_str;
if (format.find(unrestricted_hours_format) != string_type::npos) {
hours_str = hours_as_string(time_dur_arg);
boost::algorithm::replace_all(format, unrestricted_hours_format, hours_str);
}
// We still have to process restricted hours format specifier. In order to
// support parseability of durations in ISO format (%H%M%S), we'll have to
// restrict the stringified hours length to 2 characters.
if (format.find(hours_format) != string_type::npos) {
if (hours_str.empty())
hours_str = hours_as_string(time_dur_arg);
BOOST_ASSERT(hours_str.length() <= 2);
boost::algorithm::replace_all(format, hours_format, hours_str);
}
string_type frac_str;
if (format.find(seconds_with_fractional_seconds_format) != string_type::npos) {
// replace %s with %S.nnn
frac_str =
fractional_seconds_as_string(time_dur_arg, false);
char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
string_type replace_string(seconds_format);
replace_string += sep;
replace_string += frac_str;
boost::algorithm::replace_all(format,
seconds_with_fractional_seconds_format,
replace_string);
}
if (format.find(fractional_seconds_format) != string_type::npos) {
// replace %f with nnnnnnn
if (!frac_str.size()) {
frac_str = fractional_seconds_as_string(time_dur_arg, false);
}
boost::algorithm::replace_all(format,
fractional_seconds_format,
frac_str);
}
if (format.find(fractional_seconds_or_none_format) != string_type::npos) {
// replace %F with nnnnnnn or nothing if fs == 0
frac_str =
fractional_seconds_as_string(time_dur_arg, true);
if (frac_str.size()) {
char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
string_type replace_string;
replace_string += sep;
replace_string += frac_str;
boost::algorithm::replace_all(format,
fractional_seconds_or_none_format,
replace_string);
}
else {
boost::algorithm::erase_all(format,
fractional_seconds_or_none_format);
}
}
return this->do_put_tm(next_arg, ios_arg, fill_arg,
to_tm(time_dur_arg), format);
}
OutItrT put(OutItrT next, std::ios_base& ios_arg,
char_type fill, const period_type& p) const
{
return this->m_period_formatter.put_period(next, ios_arg, fill,p,*this);
}
protected:
static
string_type
fractional_seconds_as_string(const time_duration_type& time_arg,
bool null_when_zero)
{
typename time_duration_type::fractional_seconds_type frac_sec =
time_arg.fractional_seconds();
if (null_when_zero && (frac_sec == 0)) {
return string_type();
}
//make sure there is no sign
return integral_as_string(
date_time::absolute_value(frac_sec),
time_duration_type::num_fractional_digits());
}
static
string_type
hours_as_string(const time_duration_type& time_arg, int width = 2)
{
return integral_as_string(date_time::absolute_value(time_arg.hours()), width);
}
template< typename IntT >
static
string_type
integral_as_string(IntT val, int width = 2)
{
std::basic_ostringstream<char_type> ss;
ss.imbue(std::locale::classic()); // don't want any formatting
ss << std::setw(width)
<< std::setfill(static_cast<char_type>('0'));
#if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
// JDG [7/6/02 VC++ compatibility]
char_type buff[34];
ss << _i64toa(static_cast<boost::int64_t>(val), buff, 10);
#else
ss << val;
#endif
return ss.str();
}
private:
string_type m_time_duration_format;
};
template <class time_type, class CharT, class OutItrT>
std::locale::id time_facet<time_type, CharT, OutItrT>::id;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::fractional_seconds_format = time_formats<CharT>::fractional_seconds_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::fractional_seconds_or_none_format = time_formats<CharT>::fractional_seconds_or_none_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::seconds_with_fractional_seconds_format =
time_formats<CharT>::seconds_with_fractional_seconds_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::zone_name_format = time_formats<CharT>::zone_name_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::zone_abbrev_format = time_formats<CharT>::zone_abbrev_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::zone_iso_extended_format =time_formats<CharT>::zone_iso_extended_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::posix_zone_string_format =time_formats<CharT>::posix_zone_string_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::zone_iso_format = time_formats<CharT>::zone_iso_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::seconds_format = time_formats<CharT>::seconds_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::hours_format = time_formats<CharT>::hours_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::unrestricted_hours_format = time_formats<CharT>::unrestricted_hours_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::standard_format = time_formats<CharT>::standard_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::duration_seperator = time_formats<CharT>::duration_seperator;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::negative_sign = time_formats<CharT>::negative_sign;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::positive_sign = time_formats<CharT>::positive_sign;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::duration_sign_negative_only = time_formats<CharT>::duration_sign_negative_only;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::duration_sign_always = time_formats<CharT>::duration_sign_always;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type,CharT, OutItrT>::char_type*
time_facet<time_type,CharT, OutItrT>::iso_time_format_specifier = time_formats<CharT>::iso_time_format_specifier;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::iso_time_format_extended_specifier = time_formats<CharT>::iso_time_format_extended_specifier;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::default_time_format =
time_formats<CharT>::default_time_format;
template <class time_type, class CharT, class OutItrT>
const typename time_facet<time_type, CharT, OutItrT>::char_type*
time_facet<time_type, CharT, OutItrT>::default_time_duration_format =
time_formats<CharT>::default_time_duration_format;
//! Facet for format-based input.
/*!
*/
template <class time_type,
class CharT,
class InItrT = std::istreambuf_iterator<CharT, std::char_traits<CharT> > >
class BOOST_SYMBOL_VISIBLE time_input_facet :
public boost::date_time::date_input_facet<typename time_type::date_type , CharT, InItrT> {
public:
typedef typename time_type::date_type date_type;
typedef typename time_type::time_duration_type time_duration_type;
typedef typename time_duration_type::fractional_seconds_type fracional_seconds_type;
typedef boost::date_time::period<time_type,time_duration_type> period_type;
typedef boost::date_time::date_input_facet<typename time_type::date_type, CharT, InItrT> base_type;
typedef typename base_type::duration_type date_duration_type;
typedef typename base_type::year_type year_type;
typedef typename base_type::month_type month_type;
typedef typename base_type::day_type day_type;
typedef typename base_type::string_type string_type;
typedef typename string_type::const_iterator const_itr;
typedef typename base_type::char_type char_type;
typedef typename base_type::format_date_parser_type format_date_parser_type;
typedef typename base_type::period_parser_type period_parser_type;
typedef typename base_type::special_values_parser_type special_values_parser_type;
typedef typename base_type::date_gen_parser_type date_gen_parser_type;
typedef typename base_type::special_values_parser_type::match_results match_results;
static const char_type* fractional_seconds_format; // f
static const char_type* fractional_seconds_or_none_format; // F
static const char_type* seconds_with_fractional_seconds_format; // s
static const char_type* seconds_format; // S
static const char_type* standard_format; // x X
static const char_type* zone_abbrev_format; // z
static const char_type* zone_name_format; // Z
static const char_type* zone_iso_format; // q
static const char_type* zone_iso_extended_format; // Q
static const char_type* duration_seperator;
static const char_type* iso_time_format_specifier;
static const char_type* iso_time_format_extended_specifier;
static const char_type* default_time_input_format;
static const char_type* default_time_duration_format;
static std::locale::id id;
//! Constructor that takes a format string for a ptime
explicit time_input_facet(const string_type& format, ::size_t ref_arg = 0)
: base_type(format, ref_arg),
m_time_duration_format(default_time_duration_format)
{ }
explicit time_input_facet(const string_type& format,
const format_date_parser_type& date_parser,
const special_values_parser_type& sv_parser,
const period_parser_type& per_parser,
const date_gen_parser_type& date_gen_parser,
::size_t ref_arg = 0)
: base_type(format,
date_parser,
sv_parser,
per_parser,
date_gen_parser,
ref_arg),
m_time_duration_format(default_time_duration_format)
{}
//! sets default formats for ptime, local_date_time, and time_duration
explicit time_input_facet(::size_t ref_arg = 0)
: base_type(default_time_input_format, ref_arg),
m_time_duration_format(default_time_duration_format)
{ }
//! Set the format for time_duration
void time_duration_format(const char_type* const format) {
m_time_duration_format = format;
}
virtual void set_iso_format()
{
this->m_format = iso_time_format_specifier;
}
virtual void set_iso_extended_format()
{
this->m_format = iso_time_format_extended_specifier;
}
InItrT get(InItrT& sitr,
InItrT& stream_end,
std::ios_base& ios_arg,
period_type& p) const
{
p = this->m_period_parser.get_period(sitr,
stream_end,
ios_arg,
p,
time_duration_type::unit(),
*this);
return sitr;
}
//default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
//default time_duration format is %H:%M:%S%F HH:MM:SS[.fff...]
InItrT get(InItrT& sitr,
InItrT& stream_end,
std::ios_base& ios_arg,
time_duration_type& td) const
{
// skip leading whitespace
while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
bool use_current_char = false;
// num_get will consume the +/-, we may need a copy if special_value
char_type c = '\0';
if((sitr != stream_end) && (*sitr == '-' || *sitr == '+')) {
c = *sitr;
}
typedef typename time_duration_type::hour_type hour_type;
typedef typename time_duration_type::min_type min_type;
typedef typename time_duration_type::sec_type sec_type;
hour_type hour = 0;
min_type min = 0;
sec_type sec = 0;
typename time_duration_type::fractional_seconds_type frac(0);
typedef std::num_get<CharT, InItrT> num_get;
if(!std::has_facet<num_get>(ios_arg.getloc())) {
num_get* ng = new num_get();
std::locale loc = std::locale(ios_arg.getloc(), ng);
ios_arg.imbue(loc);
}
const_itr itr(m_time_duration_format.begin());
while (itr != m_time_duration_format.end() && (sitr != stream_end)) {
if (*itr == '%') {
if (++itr == m_time_duration_format.end()) break;
if (*itr != '%') {
switch(*itr) {
case 'O':
{
// A period may span more than 24 hours. In that case the format
// string should be composed with the unrestricted hours specifier.
hour = var_string_to_int<hour_type, CharT>(sitr, stream_end,
std::numeric_limits<hour_type>::digits10 + 1);
if(hour == -1){
return check_special_value(sitr, stream_end, td, c);
}
break;
}
case 'H':
{
match_results mr;
hour = fixed_string_to_int<hour_type, CharT>(sitr, stream_end, mr, 2);
if(hour == -1){
return check_special_value(sitr, stream_end, td, c);
}
break;
}
case 'M':
{
match_results mr;
min = fixed_string_to_int<min_type, CharT>(sitr, stream_end, mr, 2);
if(min == -1){
return check_special_value(sitr, stream_end, td, c);
}
break;
}
case 's':
case 'S':
{
match_results mr;
sec = fixed_string_to_int<sec_type, CharT>(sitr, stream_end, mr, 2);
if(sec == -1){
return check_special_value(sitr, stream_end, td, c);
}
if (*itr == 'S')
break;
// %s is the same as %S%f so we drop through into %f
}
/* Falls through. */
case 'f':
{
// check for decimal, check special_values if missing
if(*sitr == '.') {
++sitr;
parse_frac_type(sitr, stream_end, frac);
// sitr will point to next expected char after this parsing
// is complete so no need to advance it
use_current_char = true;
}
else {
return check_special_value(sitr, stream_end, td, c);
}
break;
}
case 'F':
{
// check for decimal, skip if missing
if(*sitr == '.') {
++sitr;
parse_frac_type(sitr, stream_end, frac);
// sitr will point to next expected char after this parsing
// is complete so no need to advance it
use_current_char = true;
}
else {
// nothing was parsed so we don't want to advance sitr
use_current_char = true;
}
break;
}
default:
{} // ignore what we don't understand?
}// switch
}
else { // itr == '%', second consecutive
++sitr;
}
++itr; //advance past format specifier
}
else { //skip past chars in format and in buffer
++itr;
// set use_current_char when sitr is already
// pointing at the next character to process
if (use_current_char) {
use_current_char = false;
}
else {
++sitr;
}
}
}
td = time_duration_type(hour, min, sec, frac);
return sitr;
}
//! Parses a time object from the input stream
InItrT get(InItrT& sitr,
InItrT& stream_end,
std::ios_base& ios_arg,
time_type& t) const
{
string_type tz_str;
return get(sitr, stream_end, ios_arg, t, tz_str, false);
}
//! Expects a time_zone in the input stream
InItrT get_local_time(InItrT& sitr,
InItrT& stream_end,
std::ios_base& ios_arg,
time_type& t,
string_type& tz_str) const
{
return get(sitr, stream_end, ios_arg, t, tz_str, true);
}
protected:
InItrT get(InItrT& sitr,
InItrT& stream_end,
std::ios_base& ios_arg,
time_type& t,
string_type& tz_str,
bool time_is_local) const
{
// skip leading whitespace
while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
bool use_current_char = false;
bool use_current_format_char = false; // used whith two character flags
// num_get will consume the +/-, we may need a copy if special_value
char_type c = '\0';
if((sitr != stream_end) && (*sitr == '-' || *sitr == '+')) {
c = *sitr;
}
typedef typename time_duration_type::hour_type hour_type;
typedef typename time_duration_type::min_type min_type;
typedef typename time_duration_type::sec_type sec_type;
// time elements
hour_type hour = 0;
min_type min = 0;
sec_type sec = 0;
typename time_duration_type::fractional_seconds_type frac(0);
// date elements
short day_of_year(0);
/* Initialized the following to their minimum values. These intermediate
* objects are used so we get specific exceptions when part of the input
* is unparsable.
* Ex: "205-Jan-15" will throw a bad_year, "2005-Jsn-15"- bad_month, etc.*/
year_type t_year(1400);
month_type t_month(1);
day_type t_day(1);
typedef std::num_get<CharT, InItrT> num_get;
if(!std::has_facet<num_get>(ios_arg.getloc())) {
num_get* ng = new num_get();
std::locale loc = std::locale(ios_arg.getloc(), ng);
ios_arg.imbue(loc);
}
const_itr itr(this->m_format.begin());
while (itr != this->m_format.end() && (sitr != stream_end)) {
if (*itr == '%') {
if (++itr == this->m_format.end()) break;
if (*itr != '%') {
// the cases are grouped by date & time flags - not alphabetical order
switch(*itr) {
// date flags
case 'Y':
case 'y':
{
char_type cs[3] = { '%', *itr };
string_type s(cs);
match_results mr;
try {
t_year = this->m_parser.parse_year(sitr, stream_end, s, mr);
}
catch(std::out_of_range&) { // base class for bad_year exception
if(this->m_sv_parser.match(sitr, stream_end, mr)) {
t = time_type(static_cast<special_values>(mr.current_match));
return sitr;
}
else {
throw; // rethrow bad_year
}
}
break;
}
case 'B':
case 'b':
case 'm':
{
char_type cs[3] = { '%', *itr };
string_type s(cs);
match_results mr;
try {
t_month = this->m_parser.parse_month(sitr, stream_end, s, mr);
}
catch(std::out_of_range&) { // base class for bad_month exception
if(this->m_sv_parser.match(sitr, stream_end, mr)) {
t = time_type(static_cast<special_values>(mr.current_match));
return sitr;
}
else {
throw; // rethrow bad_month
}
}
// did m_parser already advance sitr to next char?
if(mr.has_remaining()) {
use_current_char = true;
}
break;
}
case 'a':
case 'A':
case 'w':
{
// weekday is not used in construction but we need to get it out of the stream
char_type cs[3] = { '%', *itr };
string_type s(cs);
match_results mr;
typename date_type::day_of_week_type wd(0);
try {
wd = this->m_parser.parse_weekday(sitr, stream_end, s, mr);
}
catch(std::out_of_range&) { // base class for bad_weekday exception
if(this->m_sv_parser.match(sitr, stream_end, mr)) {
t = time_type(static_cast<special_values>(mr.current_match));
return sitr;
}
else {
throw; // rethrow bad_weekday
}
}
// did m_parser already advance sitr to next char?
if(mr.has_remaining()) {
use_current_char = true;
}
break;
}
case 'j':
{
// code that gets julian day (from format_date_parser)
match_results mr;
day_of_year = fixed_string_to_int<unsigned short, CharT>(sitr, stream_end, mr, 3);
if(day_of_year == -1) {
if(this->m_sv_parser.match(sitr, stream_end, mr)) {
t = time_type(static_cast<special_values>(mr.current_match));
return sitr;
}
}
// these next two lines are so we get an exception with bad input
typedef typename time_type::date_type::day_of_year_type day_of_year_type;
day_of_year_type t_day_of_year(day_of_year);
break;
}
case 'd':
case 'e':
{
try {
t_day = (*itr == 'd') ?
this->m_parser.parse_day_of_month(sitr, stream_end) :
this->m_parser.parse_var_day_of_month(sitr, stream_end);
}
catch(std::out_of_range&) { // base class for exception bad_day_of_month
match_results mr;
if(this->m_sv_parser.match(sitr, stream_end, mr)) {
t = time_type(static_cast<special_values>(mr.current_match));
return sitr;
}
else {
throw; // rethrow bad_day_of_month
}
}
break;
}
// time flags
case 'H':
{
match_results mr;
hour = fixed_string_to_int<hour_type, CharT>(sitr, stream_end, mr, 2);
if(hour == -1){
return check_special_value(sitr, stream_end, t, c);
}
break;
}
case 'M':
{
match_results mr;
min = fixed_string_to_int<min_type, CharT>(sitr, stream_end, mr, 2);
if(min == -1){
return check_special_value(sitr, stream_end, t, c);
}
break;
}
case 's':
case 'S':
{
match_results mr;
sec = fixed_string_to_int<sec_type, CharT>(sitr, stream_end, mr, 2);
if(sec == -1){
return check_special_value(sitr, stream_end, t, c);
}
if (*itr == 'S' || sitr == stream_end)
break;
// %s is the same as %S%f so we drop through into %f if we are
// not at the end of the stream
}
/* Falls through. */
case 'f':
{
// check for decimal, check SV if missing
if(*sitr == '.') {
++sitr;
parse_frac_type(sitr, stream_end, frac);
// sitr will point to next expected char after this parsing
// is complete so no need to advance it
use_current_char = true;
}
else {
return check_special_value(sitr, stream_end, t, c);
}
break;
}
case 'F':
{
// check for decimal, skip if missing
if(*sitr == '.') {
++sitr;
parse_frac_type(sitr, stream_end, frac);
// sitr will point to next expected char after this parsing
// is complete so no need to advance it
use_current_char = true;
}
else {
// nothing was parsed so we don't want to advance sitr
use_current_char = true;
}
break;
}
// time_zone flags
//case 'q':
//case 'Q':
//case 'z':
case 'Z':
{
if(time_is_local) { // skip if 't' is a ptime
++itr;
if(*itr == 'P') {
// skip leading whitespace
while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
// parse zone
while((sitr != stream_end) && (!std::isspace(*sitr))) {
tz_str += *sitr;
++sitr;
}
}
else {
use_current_format_char = true;
}
}
else {
// nothing was parsed so we don't want to advance sitr
use_current_char = true;
}
break;
}
default:
{} // ignore what we don't understand?
}// switch
}
else { // itr == '%', second consecutive
++sitr;
}
if(use_current_format_char) {
use_current_format_char = false;
}
else {
++itr; //advance past format specifier
}
}
else { //skip past chars in format and in buffer
++itr;
// set use_current_char when sitr is already
// pointing at the next character to process
if (use_current_char) {
use_current_char = false;
}
else {
++sitr;
}
}
}
date_type d(not_a_date_time);
if (day_of_year > 0) {
d = date_type(static_cast<unsigned short>(t_year),1,1) + date_duration_type(day_of_year-1);
}
else {
d = date_type(t_year, t_month, t_day);
}
time_duration_type td(hour, min, sec, frac);
t = time_type(d, td);
return sitr;
}
//! Helper function to check for special_value
/*! First character may have been consumed during original parse
* attempt. Parameter 'c' should be a copy of that character.
* Throws ios_base::failure if parse fails. */
template<class temporal_type>
inline
InItrT check_special_value(InItrT& sitr,InItrT& stream_end, temporal_type& tt, char_type c='\0') const
{
match_results mr;
if((c == '-' || c == '+') && (*sitr != c)) { // was the first character consumed?
mr.cache += c;
}
(void)this->m_sv_parser.match(sitr, stream_end, mr);
if(mr.current_match == match_results::PARSE_ERROR) {
std::string tmp = convert_string_type<char_type, char>(mr.cache);
boost::throw_exception(std::ios_base::failure("Parse failed. No match found for '" + tmp + "'"));
BOOST_DATE_TIME_UNREACHABLE_EXPRESSION(return sitr); // should never reach
}
tt = temporal_type(static_cast<special_values>(mr.current_match));
return sitr;
}
//! Helper function for parsing a fractional second type from the stream
void parse_frac_type(InItrT& sitr,
InItrT& stream_end,
fracional_seconds_type& frac) const
{
string_type cache;
while((sitr != stream_end) && std::isdigit(*sitr)) {
cache += *sitr;
++sitr;
}
if(cache.size() > 0) {
unsigned short precision = time_duration_type::num_fractional_digits();
// input may be only the first few decimal places
if(cache.size() < precision) {
frac = lexical_cast<fracional_seconds_type>(cache);
frac = decimal_adjust(frac, static_cast<unsigned short>(precision - cache.size()));
}
else {
// if input has too many decimal places, drop excess digits
frac = lexical_cast<fracional_seconds_type>(cache.substr(0, precision));
}
}
}
private:
string_type m_time_duration_format;
//! Helper function to adjust trailing zeros when parsing fractional digits
template<class int_type>
inline
int_type decimal_adjust(int_type val, const unsigned short places) const
{
unsigned long factor = 1;
for(int i = 0; i < places; ++i){
factor *= 10; // shift decimal to the right
}
return val * factor;
}
};
template <class time_type, class CharT, class InItrT>
std::locale::id time_input_facet<time_type, CharT, InItrT>::id;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::fractional_seconds_format = time_formats<CharT>::fractional_seconds_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::fractional_seconds_or_none_format = time_formats<CharT>::fractional_seconds_or_none_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::seconds_with_fractional_seconds_format = time_formats<CharT>::seconds_with_fractional_seconds_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::seconds_format = time_formats<CharT>::seconds_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::standard_format = time_formats<CharT>::standard_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::zone_abbrev_format = time_formats<CharT>::zone_abbrev_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::zone_name_format = time_formats<CharT>::zone_name_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::zone_iso_format = time_formats<CharT>::zone_iso_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::zone_iso_extended_format = time_formats<CharT>::zone_iso_extended_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::duration_seperator = time_formats<CharT>::duration_seperator;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::iso_time_format_specifier = time_formats<CharT>::iso_time_format_specifier;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::iso_time_format_extended_specifier = time_formats<CharT>::iso_time_format_extended_specifier;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::default_time_input_format = time_formats<CharT>::default_time_input_format;
template <class time_type, class CharT, class InItrT>
const typename time_input_facet<time_type, CharT, InItrT>::char_type*
time_input_facet<time_type, CharT, InItrT>::default_time_duration_format = time_formats<CharT>::default_time_duration_format;
} } // namespaces
#endif
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