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vn-verdnaturachat/ios/Pods/boost-for-react-native/boost/log/detail/decomposed_time.hpp

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/*
* Copyright Andrey Semashev 2007 - 2015.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
/*!
* \file decomposed_time.hpp
* \author Andrey Semashev
* \date 07.11.2012
*
* \brief This header is the Boost.Log library implementation, see the library documentation
* at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
*/
#ifndef BOOST_LOG_DETAIL_DECOMPOSED_TIME_HPP_INCLUDED_
#define BOOST_LOG_DETAIL_DECOMPOSED_TIME_HPP_INCLUDED_
#include <ctime>
#include <string>
#include <vector>
#include <locale>
#include <boost/cstdint.hpp>
#include <boost/move/core.hpp>
#include <boost/range/iterator_range_core.hpp>
#include <boost/log/detail/config.hpp>
#include <boost/log/detail/date_time_format_parser.hpp>
#include <boost/log/detail/attachable_sstream_buf.hpp>
#include <boost/log/utility/formatting_ostream.hpp>
#include <boost/log/detail/header.hpp>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
namespace boost {
BOOST_LOG_OPEN_NAMESPACE
namespace aux {
//! Date and time suitable for formatting
struct decomposed_time
{
// Subseconds are microseconds
enum _
{
subseconds_per_second = 1000000,
subseconds_digits10 = 6
};
uint32_t year, month, day, hours, minutes, seconds, subseconds;
bool negative;
decomposed_time() : year(0), month(1), day(1), hours(0), minutes(0), seconds(0), subseconds(0), negative(false)
{
}
decomposed_time(uint32_t y, uint32_t mo, uint32_t d, uint32_t h, uint32_t mi, uint32_t s, uint32_t ss = 0, bool neg = false) :
year(y), month(mo), day(d), hours(h), minutes(mi), seconds(s), subseconds(ss), negative(neg)
{
}
unsigned int week_day() const
{
unsigned int a = (14u - month) / 12u;
unsigned int y = year - a;
unsigned int m = month + 12u * a - 2u;
return (day + y + (y / 4u) - (y / 100u) + (y / 400u) + (31u * m) / 12u) % 7u;
}
unsigned int year_day() const
{
bool is_leap_year = (!(year % 4u)) && ((year % 100u) || (!(year % 400u)));
static const unsigned int first_day_offset[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
return first_day_offset[month - 1] + day + (month > 2 && is_leap_year);
}
};
inline std::tm to_tm(decomposed_time const& t)
{
std::tm res = {};
res.tm_year = static_cast< int >(t.year) - 1900;
res.tm_mon = t.month - 1;
res.tm_mday = t.day;
res.tm_hour = t.hours;
res.tm_min = t.minutes;
res.tm_sec = t.seconds;
res.tm_wday = t.week_day();
res.tm_yday = t.year_day();
res.tm_isdst = -1;
return res;
}
template< typename T >
struct decomposed_time_wrapper :
public boost::log::aux::decomposed_time
{
typedef boost::log::aux::decomposed_time base_type;
typedef T value_type;
value_type m_time;
BOOST_DEFAULTED_FUNCTION(decomposed_time_wrapper(), {})
explicit decomposed_time_wrapper(value_type const& time) : m_time(time)
{
}
};
template< typename CharT >
BOOST_LOG_API void put_integer(boost::log::aux::basic_ostringstreambuf< CharT >& strbuf, uint32_t value, unsigned int width, CharT fill_char);
template< typename T, typename CharT >
class date_time_formatter
{
BOOST_COPYABLE_AND_MOVABLE_ALT(date_time_formatter)
protected:
// Note: This typedef is needed to work around MSVC 2012 crappy name lookup in the derived classes
typedef date_time_formatter date_time_formatter_;
public:
typedef void result_type;
typedef T value_type;
typedef CharT char_type;
typedef std::basic_string< char_type > string_type;
typedef basic_formatting_ostream< char_type > stream_type;
struct context
{
date_time_formatter const& self;
stream_type& strm;
value_type const& value;
unsigned int literal_index, literal_pos;
context(date_time_formatter const& self_, stream_type& strm_, value_type const& value_) :
self(self_),
strm(strm_),
value(value_),
literal_index(0),
literal_pos(0)
{
}
BOOST_DELETED_FUNCTION(context(context const&))
BOOST_DELETED_FUNCTION(context& operator=(context const&))
};
private:
typedef void (*formatter_type)(context&);
typedef std::vector< formatter_type > formatters;
typedef std::vector< unsigned int > literal_lens;
protected:
formatters m_formatters;
literal_lens m_literal_lens;
string_type m_literal_chars;
public:
BOOST_DEFAULTED_FUNCTION(date_time_formatter(), {})
date_time_formatter(date_time_formatter const& that) :
m_formatters(that.m_formatters),
m_literal_lens(that.m_literal_lens),
m_literal_chars(that.m_literal_chars)
{
}
date_time_formatter(BOOST_RV_REF(date_time_formatter) that) BOOST_NOEXCEPT
{
this->swap(static_cast< date_time_formatter& >(that));
}
date_time_formatter& operator= (date_time_formatter that) BOOST_NOEXCEPT
{
this->swap(that);
return *this;
}
result_type operator() (stream_type& strm, value_type const& value) const
{
// Some formatters will put characters directly to the underlying string, so we have to flush stream buffers before formatting
strm.flush();
context ctx(*this, strm, value);
for (typename formatters::const_iterator it = m_formatters.begin(), end = m_formatters.end(); strm.good() && it != end; ++it)
{
(*it)(ctx);
}
}
void add_formatter(formatter_type fun)
{
m_formatters.push_back(fun);
}
void add_literal(iterator_range< const char_type* > const& lit)
{
m_literal_chars.append(lit.begin(), lit.end());
m_literal_lens.push_back(static_cast< unsigned int >(lit.size()));
m_formatters.push_back(&date_time_formatter_::format_literal);
}
void swap(date_time_formatter& that) BOOST_NOEXCEPT
{
m_formatters.swap(that.m_formatters);
m_literal_lens.swap(that.m_literal_lens);
m_literal_chars.swap(that.m_literal_chars);
}
public:
template< char FormatCharV >
static void format_through_locale(context& ctx)
{
typedef std::time_put< char_type > facet_type;
typedef typename facet_type::iter_type iter_type;
std::tm t = to_tm(static_cast< decomposed_time const& >(ctx.value));
std::use_facet< facet_type >(ctx.strm.getloc()).put(iter_type(ctx.strm.stream()), ctx.strm.stream(), ' ', &t, FormatCharV);
ctx.strm.flush();
}
static void format_full_year(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.year, 4, static_cast< char_type >('0'));
}
static void format_short_year(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.year % 100u, 2, static_cast< char_type >('0'));
}
static void format_numeric_month(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.month, 2, static_cast< char_type >('0'));
}
template< char_type FillCharV >
static void format_month_day(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.day, 2, static_cast< char_type >(FillCharV));
}
static void format_week_day(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), static_cast< decomposed_time const& >(ctx.value).week_day(), 1, static_cast< char_type >('0'));
}
template< char_type FillCharV >
static void format_hours(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.hours, 2, static_cast< char_type >(FillCharV));
}
template< char_type FillCharV >
static void format_hours_12(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.hours % 12u + 1u, 2, static_cast< char_type >(FillCharV));
}
static void format_minutes(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.minutes, 2, static_cast< char_type >('0'));
}
static void format_seconds(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.seconds, 2, static_cast< char_type >('0'));
}
static void format_fractional_seconds(context& ctx)
{
(put_integer)(*ctx.strm.rdbuf(), ctx.value.subseconds, decomposed_time::subseconds_digits10, static_cast< char_type >('0'));
}
template< bool UpperCaseV >
static void format_am_pm(context& ctx)
{
static const char_type am[] = { static_cast< char_type >(UpperCaseV ? 'A' : 'a'), static_cast< char_type >(UpperCaseV ? 'M' : 'm'), static_cast< char_type >(0) };
static const char_type pm[] = { static_cast< char_type >(UpperCaseV ? 'P' : 'p'), static_cast< char_type >(UpperCaseV ? 'M' : 'm'), static_cast< char_type >(0) };
ctx.strm.rdbuf()->append(((static_cast< decomposed_time const& >(ctx.value).hours > 11) ? pm : am), 2u);
}
template< bool DisplayPositiveV >
static void format_sign(context& ctx)
{
if (static_cast< decomposed_time const& >(ctx.value).negative)
ctx.strm.rdbuf()->push_back('-');
else if (DisplayPositiveV)
ctx.strm.rdbuf()->push_back('+');
}
private:
static void format_literal(context& ctx)
{
unsigned int len = ctx.self.m_literal_lens[ctx.literal_index], pos = ctx.literal_pos;
++ctx.literal_index;
ctx.literal_pos += len;
const char_type* lit = ctx.self.m_literal_chars.c_str();
ctx.strm.rdbuf()->append(lit + pos, len);
}
};
template< typename FormatterT, typename CharT >
class decomposed_time_formatter_builder :
public date_time_format_parser_callback< CharT >
{
public:
typedef date_time_format_parser_callback< CharT > base_type;
typedef typename base_type::char_type char_type;
typedef FormatterT formatter_type;
typedef typename formatter_type::value_type value_type;
typedef typename formatter_type::stream_type stream_type;
typedef typename stream_type::string_type string_type;
protected:
formatter_type& m_formatter;
public:
explicit decomposed_time_formatter_builder(formatter_type& fmt) : m_formatter(fmt)
{
}
void on_literal(iterator_range< const char_type* > const& lit)
{
m_formatter.add_literal(lit);
}
void on_short_year()
{
m_formatter.add_formatter(&formatter_type::format_short_year);
}
void on_full_year()
{
m_formatter.add_formatter(&formatter_type::format_full_year);
}
void on_numeric_month()
{
m_formatter.add_formatter(&formatter_type::format_numeric_month);
}
void on_short_month()
{
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_through_locale< 'b' >);
}
void on_full_month()
{
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_through_locale< 'B' >);
}
void on_month_day(bool leading_zero)
{
if (leading_zero)
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_month_day< '0' >);
else
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_month_day< ' ' >);
}
void on_numeric_week_day()
{
m_formatter.add_formatter(&formatter_type::format_week_day);
}
void on_short_week_day()
{
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_through_locale< 'a' >);
}
void on_full_week_day()
{
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_through_locale< 'A' >);
}
void on_hours(bool leading_zero)
{
if (leading_zero)
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_hours< '0' >);
else
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_hours< ' ' >);
}
void on_hours_12(bool leading_zero)
{
if (leading_zero)
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_hours_12< '0' >);
else
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_hours_12< ' ' >);
}
void on_minutes()
{
m_formatter.add_formatter(&formatter_type::format_minutes);
}
void on_seconds()
{
m_formatter.add_formatter(&formatter_type::format_seconds);
}
void on_fractional_seconds()
{
m_formatter.add_formatter(&formatter_type::format_fractional_seconds);
}
void on_am_pm(bool upper_case)
{
if (upper_case)
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_am_pm< true >);
else
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_am_pm< false >);
}
void on_duration_sign(bool display_positive)
{
if (display_positive)
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_sign< true >);
else
m_formatter.add_formatter(&formatter_type::BOOST_NESTED_TEMPLATE format_sign< false >);
}
void on_iso_time_zone()
{
}
void on_extended_iso_time_zone()
{
}
};
} // namespace aux
BOOST_LOG_CLOSE_NAMESPACE // namespace log
} // namespace boost
#include <boost/log/detail/footer.hpp>
#endif // BOOST_LOG_DETAIL_DECOMPOSED_TIME_HPP_INCLUDED_
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