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