1#ifndef GREG_MONTH_HPP___
2#define GREG_MONTH_HPP___
3
4/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
5 * Use, modification and distribution is subject to the
6 * Boost Software License, Version 1.0. (See accompanying
7 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
8 * Author: Jeff Garland, Bart Garst
9 * $Date$
10 */
11
12#include <boost/date_time/constrained_value.hpp>
13#include <boost/date_time/date_defs.hpp>
14#include <boost/shared_ptr.hpp>
15#include <boost/date_time/compiler_config.hpp>
16#include <stdexcept>
17#include <string>
18#include <map>
19#include <algorithm>
20#include <cctype>
21
22namespace boost {
23namespace gregorian {
24
25 typedef date_time::months_of_year months_of_year;
26
27 //bring enum values into the namespace
28 using date_time::Jan;
29 using date_time::Feb;
30 using date_time::Mar;
31 using date_time::Apr;
32 using date_time::May;
33 using date_time::Jun;
34 using date_time::Jul;
35 using date_time::Aug;
36 using date_time::Sep;
37 using date_time::Oct;
38 using date_time::Nov;
39 using date_time::Dec;
40 using date_time::NotAMonth;
41 using date_time::NumMonths;
42
43 //! Exception thrown if a greg_month is constructed with a value out of range
44 struct BOOST_SYMBOL_VISIBLE bad_month : public std::out_of_range
45 {
46 bad_month() : std::out_of_range(std::string("Month number is out of range 1..12")) {}
47 };
48 //! Build a policy class for the greg_month_rep
49 typedef CV::simple_exception_policy<unsigned short, 1, 12, bad_month> greg_month_policies;
50 //! A constrained range that implements the gregorian_month rules
51 typedef CV::constrained_value<greg_month_policies> greg_month_rep;
52
53
54 //! Wrapper class to represent months in gregorian based calendar
55 class BOOST_DATE_TIME_DECL greg_month : public greg_month_rep {
56 public:
57 typedef date_time::months_of_year month_enum;
58 typedef std::map<std::string, unsigned short> month_map_type;
59 typedef boost::shared_ptr<month_map_type> month_map_ptr_type;
60 //! Construct a month from the months_of_year enumeration
61 greg_month(month_enum theMonth) :
62 greg_month_rep(static_cast<greg_month_rep::value_type>(theMonth)) {}
63 //! Construct from a short value
64 greg_month(unsigned short theMonth) : greg_month_rep(theMonth) {}
65 //! Convert the value back to a short
66 operator unsigned short() const {return value_;}
67 //! Returns month as number from 1 to 12
68 unsigned short as_number() const {return value_;}
69 month_enum as_enum() const {return static_cast<month_enum>(value_);}
70 const char* as_short_string() const;
71 const char* as_long_string() const;
72#ifndef BOOST_NO_STD_WSTRING
73 const wchar_t* as_short_wstring() const;
74 const wchar_t* as_long_wstring() const;
75#endif // BOOST_NO_STD_WSTRING
76 //! Shared pointer to a map of Month strings (Names & Abbrev) & numbers
77 static month_map_ptr_type get_month_map_ptr();
78
79 /* parameterized as_*_string functions are intended to be called
80 * from a template function: "... as_short_string(charT c='\0');" */
81 const char* as_short_string(char) const
82 {
83 return as_short_string();
84 }
85 const char* as_long_string(char) const
86 {
87 return as_long_string();
88 }
89#ifndef BOOST_NO_STD_WSTRING
90 const wchar_t* as_short_string(wchar_t) const
91 {
92 return as_short_wstring();
93 }
94 const wchar_t* as_long_string(wchar_t) const
95 {
96 return as_long_wstring();
97 }
98#endif // BOOST_NO_STD_WSTRING
99 };
100
101} } //namespace gregorian
102
103
104
105#endif
106