1 | #ifndef DATE_TIME_DATE_FORMATTING_LOCALES_HPP___ |
2 | #define DATE_TIME_DATE_FORMATTING_LOCALES_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 | |
13 | #include "boost/date_time/locale_config.hpp" // set BOOST_DATE_TIME_NO_LOCALE |
14 | |
15 | #ifndef BOOST_DATE_TIME_NO_LOCALE |
16 | |
17 | #include "boost/date_time/iso_format.hpp" |
18 | #include "boost/date_time/date_names_put.hpp" |
19 | #include "boost/date_time/parse_format_base.hpp" |
20 | //#include <string> |
21 | #include <sstream> |
22 | #include <iomanip> |
23 | |
24 | |
25 | namespace boost { |
26 | namespace date_time { |
27 | |
28 | //! Formats a month as as string into an ostream |
29 | template<class facet_type, |
30 | class charT = char> |
31 | class ostream_month_formatter |
32 | { |
33 | public: |
34 | typedef typename facet_type::month_type month_type; |
35 | typedef std::basic_ostream<charT> ostream_type; |
36 | |
37 | //! Formats a month as as string into an output iterator |
38 | static void format_month(const month_type& month, |
39 | ostream_type& os, |
40 | const facet_type& f) |
41 | { |
42 | |
43 | switch (f.month_format()) |
44 | { |
45 | case month_as_short_string: |
46 | { |
47 | std::ostreambuf_iterator<charT> oitr(os); |
48 | f.put_month_short(oitr, month.as_enum()); |
49 | break; |
50 | } |
51 | case month_as_long_string: |
52 | { |
53 | std::ostreambuf_iterator<charT> oitr(os); |
54 | f.put_month_long(oitr, month.as_enum()); |
55 | break; |
56 | } |
57 | case month_as_integer: |
58 | { |
59 | charT fill_char = '0'; |
60 | os << std::setw(2) << std::setfill(fill_char) << month.as_number(); |
61 | break; |
62 | } |
63 | |
64 | } |
65 | } // format_month |
66 | |
67 | }; |
68 | |
69 | |
70 | //! Formats a weekday |
71 | template<class weekday_type, |
72 | class facet_type, |
73 | class charT = char> |
74 | class ostream_weekday_formatter |
75 | { |
76 | public: |
77 | typedef typename facet_type::month_type month_type; |
78 | typedef std::basic_ostream<charT> ostream_type; |
79 | |
80 | //! Formats a month as as string into an output iterator |
81 | static void format_weekday(const weekday_type& wd, |
82 | ostream_type& os, |
83 | const facet_type& f, |
84 | bool as_long_string) |
85 | { |
86 | |
87 | std::ostreambuf_iterator<charT> oitr(os); |
88 | if (as_long_string) { |
89 | f.put_weekday_long(oitr, wd.as_enum()); |
90 | } |
91 | else { |
92 | f.put_weekday_short(oitr, wd.as_enum()); |
93 | } |
94 | |
95 | } // format_weekday |
96 | |
97 | }; |
98 | |
99 | |
100 | //! Convert ymd to a standard string formatting policies |
101 | template<class ymd_type, |
102 | class facet_type, |
103 | class charT = char> |
104 | class ostream_ymd_formatter |
105 | { |
106 | public: |
107 | typedef typename ymd_type::month_type month_type; |
108 | typedef ostream_month_formatter<facet_type, charT> month_formatter_type; |
109 | typedef std::basic_ostream<charT> ostream_type; |
110 | typedef std::basic_string<charT> foo_type; |
111 | |
112 | //! Convert ymd to a standard string formatting policies |
113 | /*! This is standard code for handling date formatting with |
114 | * year-month-day based date information. This function |
115 | * uses the format_type to control whether the string will |
116 | * contain separator characters, and if so what the character |
117 | * will be. In addtion, it can format the month as either |
118 | * an integer or a string as controled by the formatting |
119 | * policy |
120 | */ |
121 | // static string_type ymd_to_string(ymd_type ymd) |
122 | // { |
123 | // std::ostringstream ss; |
124 | // facet_type dnp; |
125 | // ymd_put(ymd, ss, dnp); |
126 | // return ss.str(); |
127 | // } |
128 | |
129 | |
130 | // Put ymd to ostream -- part of ostream refactor |
131 | static void ymd_put(ymd_type ymd, |
132 | ostream_type& os, |
133 | const facet_type& f) |
134 | { |
135 | std::ostreambuf_iterator<charT> oitr(os); |
136 | charT fill_char = '0'; |
137 | switch (f.date_order()) { |
138 | case ymd_order_iso: { |
139 | os << ymd.year; |
140 | if (f.has_date_sep_chars()) { |
141 | f.month_sep_char(oitr); |
142 | } |
143 | month_formatter_type::format_month(ymd.month, os, f); |
144 | if (f.has_date_sep_chars()) { |
145 | f.day_sep_char(oitr); |
146 | } |
147 | os << std::setw(2) << std::setfill(fill_char) |
148 | << ymd.day; |
149 | break; |
150 | } |
151 | case ymd_order_us: { |
152 | month_formatter_type::format_month(ymd.month, os, f); |
153 | if (f.has_date_sep_chars()) { |
154 | f.day_sep_char(oitr); |
155 | } |
156 | os << std::setw(2) << std::setfill(fill_char) |
157 | << ymd.day; |
158 | if (f.has_date_sep_chars()) { |
159 | f.month_sep_char(oitr); |
160 | } |
161 | os << ymd.year; |
162 | break; |
163 | } |
164 | case ymd_order_dmy: { |
165 | os << std::setw(2) << std::setfill(fill_char) |
166 | << ymd.day; |
167 | if (f.has_date_sep_chars()) { |
168 | f.day_sep_char(oitr); |
169 | } |
170 | month_formatter_type::format_month(ymd.month, os, f); |
171 | if (f.has_date_sep_chars()) { |
172 | f.month_sep_char(oitr); |
173 | } |
174 | os << ymd.year; |
175 | break; |
176 | } |
177 | } |
178 | } |
179 | }; |
180 | |
181 | |
182 | //! Convert a date to string using format policies |
183 | template<class date_type, |
184 | class facet_type, |
185 | class charT = char> |
186 | class ostream_date_formatter |
187 | { |
188 | public: |
189 | typedef std::basic_ostream<charT> ostream_type; |
190 | typedef typename date_type::ymd_type ymd_type; |
191 | |
192 | //! Put date into an ostream |
193 | static void date_put(const date_type& d, |
194 | ostream_type& os, |
195 | const facet_type& f) |
196 | { |
197 | special_values sv = d.as_special(); |
198 | if (sv == not_special) { |
199 | ymd_type ymd = d.year_month_day(); |
200 | ostream_ymd_formatter<ymd_type, facet_type, charT>::ymd_put(ymd, os, f); |
201 | } |
202 | else { // output a special value |
203 | std::ostreambuf_iterator<charT> coi(os); |
204 | f.put_special_value(coi, sv); |
205 | } |
206 | } |
207 | |
208 | |
209 | //! Put date into an ostream |
210 | static void date_put(const date_type& d, |
211 | ostream_type& os) |
212 | { |
213 | //retrieve the local from the ostream |
214 | std::locale locale = os.getloc(); |
215 | if (std::has_facet<facet_type>(locale)) { |
216 | const facet_type& f = std::use_facet<facet_type>(locale); |
217 | date_put(d, os, f); |
218 | } |
219 | else { |
220 | //default to something sensible if no facet installed |
221 | facet_type default_facet; |
222 | date_put(d, os, default_facet); |
223 | } |
224 | } // date_to_ostream |
225 | }; //class date_formatter |
226 | |
227 | |
228 | } } //namespace date_time |
229 | |
230 | #endif |
231 | |
232 | #endif |
233 | |
234 | |