106 lines
3.5 KiB
Plaintext
106 lines
3.5 KiB
Plaintext
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#ifndef GREG_MONTH_HPP___
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#define GREG_MONTH_HPP___
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/* Copyright (c) 2002,2003 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/shared_ptr.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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#include <map>
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#include <algorithm>
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#include <cctype>
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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 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_DATE_TIME_DECL 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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typedef std::map<std::string, unsigned short> month_map_type;
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typedef boost::shared_ptr<month_map_type> month_map_ptr_type;
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//! Construct a month from the months_of_year enumeration
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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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greg_month(unsigned short theMonth) : greg_month_rep(theMonth) {}
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//! Convert the value back to a short
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operator unsigned short() const {return value_;}
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//! Returns month as number from 1 to 12
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unsigned short as_number() const {return value_;}
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month_enum as_enum() const {return static_cast<month_enum>(value_);}
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const char* as_short_string() const;
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const char* as_long_string() const;
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#ifndef BOOST_NO_STD_WSTRING
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const wchar_t* as_short_wstring() const;
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const wchar_t* as_long_wstring() const;
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#endif // BOOST_NO_STD_WSTRING
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//! Shared pointer to a map of Month strings (Names & Abbrev) & numbers
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static month_map_ptr_type get_month_map_ptr();
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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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