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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 |