#ifndef GREG_MONTH_HPP___
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#define GREG_MONTH_HPP___
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/* Copyright (c) 2002,2003, 2020 CrystalClear Software, Inc.
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* Use, modification and distribution is subject to the
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* Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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* Author: Jeff Garland, Bart Garst
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* $Date$
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*/
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#include <boost/date_time/constrained_value.hpp>
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#include <boost/date_time/date_defs.hpp>
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#include <boost/date_time/compiler_config.hpp>
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#include <stdexcept>
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#include <string>
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namespace boost {
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namespace gregorian {
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typedef date_time::months_of_year months_of_year;
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//bring enum values into the namespace
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using date_time::Jan;
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using date_time::Feb;
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using date_time::Mar;
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using date_time::Apr;
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using date_time::May;
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using date_time::Jun;
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using date_time::Jul;
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using date_time::Aug;
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using date_time::Sep;
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using date_time::Oct;
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using date_time::Nov;
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using date_time::Dec;
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using date_time::NotAMonth;
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using date_time::NumMonths;
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//! Exception thrown if a greg_month is constructed with a value out of range
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struct BOOST_SYMBOL_VISIBLE bad_month : public std::out_of_range
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{
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bad_month() : std::out_of_range(std::string("Month number is out of range 1..12")) {}
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};
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//! Build a policy class for the greg_month_rep
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typedef CV::simple_exception_policy<unsigned short, 1, 12, bad_month> greg_month_policies;
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//! A constrained range that implements the gregorian_month rules
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typedef CV::constrained_value<greg_month_policies> greg_month_rep;
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//! Wrapper class to represent months in gregorian based calendar
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class BOOST_SYMBOL_VISIBLE greg_month : public greg_month_rep {
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public:
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typedef date_time::months_of_year month_enum;
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//! Construct a month from the months_of_year enumeration
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BOOST_CXX14_CONSTEXPR greg_month(month_enum theMonth) :
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greg_month_rep(static_cast<greg_month_rep::value_type>(theMonth)) {}
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//! Construct from a short value
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BOOST_CXX14_CONSTEXPR greg_month(value_type theMonth) : greg_month_rep(theMonth) {}
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//! Convert the value back to a short
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BOOST_CXX14_CONSTEXPR operator value_type() const {return value_;}
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//! Returns month as number from 1 to 12
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BOOST_CXX14_CONSTEXPR value_type as_number() const {return value_;}
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BOOST_CXX14_CONSTEXPR month_enum as_enum() const {return static_cast<month_enum>(value_);}
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//! Returns 3 char english string for the month ex: Jan, Feb, Mar, Apr
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const char*
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as_short_string() const
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{
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static const char* const short_month_names[NumMonths]
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= {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec", "NAM"};
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return short_month_names[value_-1];
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}
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//! Returns full name of month as string in english ex: January, February
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const char*
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as_long_string() const
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{
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static const char* const long_month_names[NumMonths]
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= {"January","February","March","April","May","June","July","August",
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"September","October","November","December","NotAMonth"};
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return long_month_names[value_-1];
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}
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#ifndef BOOST_NO_STD_WSTRING
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//! Returns 3 wchar_t english string for the month ex: Jan, Feb, Mar, Apr
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const wchar_t*
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as_short_wstring() const
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{
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static const wchar_t* const w_short_month_names[NumMonths]
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= {L"Jan",L"Feb",L"Mar",L"Apr",L"May",L"Jun",L"Jul",L"Aug",L"Sep",L"Oct",
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L"Nov",L"Dec",L"NAM"};
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return w_short_month_names[value_-1];
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}
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//! Returns full name of month as wchar_t string in english ex: January, February
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const wchar_t*
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as_long_wstring() const
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{
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static const wchar_t* const w_long_month_names[NumMonths]
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= {L"January",L"February",L"March",L"April",L"May",L"June",L"July",L"August",
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L"September",L"October",L"November",L"December",L"NotAMonth"};
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return w_long_month_names[value_-1];
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}
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#endif // BOOST_NO_STD_WSTRING
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/* parameterized as_*_string functions are intended to be called
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* from a template function: "... as_short_string(charT c='\0');" */
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const char* as_short_string(char) const
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{
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return as_short_string();
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}
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const char* as_long_string(char) const
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{
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return as_long_string();
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}
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#ifndef BOOST_NO_STD_WSTRING
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const wchar_t* as_short_string(wchar_t) const
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{
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return as_short_wstring();
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}
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const wchar_t* as_long_string(wchar_t) const
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{
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return as_long_wstring();
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}
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#endif // BOOST_NO_STD_WSTRING
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};
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} } //namespace gregorian
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#endif
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