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 <boost/io/ios_state.hpp> |
21 | //#include <string> |
22 | #include <sstream> |
23 | #include <iomanip> |
24 | |
25 | |
26 | namespace boost { |
27 | namespace date_time { |
28 | |
29 | //! Formats a month as as string into an ostream |
30 | template<class facet_type, |
31 | class charT = char> |
32 | class ostream_month_formatter |
33 | { |
34 | public: |
35 | typedef typename facet_type::month_type month_type; |
36 | typedef std::basic_ostream<charT> ostream_type; |
37 | |
38 | //! Formats a month as as string into an output iterator |
39 | static void format_month(const month_type& month, |
40 | ostream_type& os, |
41 | const facet_type& f) |
42 | { |
43 | |
44 | switch (f.month_format()) |
45 | { |
46 | case month_as_short_string: |
47 | { |
48 | std::ostreambuf_iterator<charT> oitr(os); |
49 | f.put_month_short(oitr, month.as_enum()); |
50 | break; |
51 | } |
52 | case month_as_long_string: |
53 | { |
54 | std::ostreambuf_iterator<charT> oitr(os); |
55 | f.put_month_long(oitr, month.as_enum()); |
56 | break; |
57 | } |
58 | case month_as_integer: |
59 | { |
60 | boost::io::basic_ios_fill_saver<charT> ifs(os); |
61 | os << std::setw(2) << std::setfill(os.widen('0')) << month.as_number(); |
62 | break; |
63 | } |
64 | |
65 | } |
66 | } // format_month |
67 | |
68 | }; |
69 | |
70 | |
71 | //! Formats a weekday |
72 | template<class weekday_type, |
73 | class facet_type, |
74 | class charT = char> |
75 | class ostream_weekday_formatter |
76 | { |
77 | public: |
78 | typedef typename facet_type::month_type month_type; |
79 | typedef std::basic_ostream<charT> ostream_type; |
80 | |
81 | //! Formats a month as as string into an output iterator |
82 | static void format_weekday(const weekday_type& wd, |
83 | ostream_type& os, |
84 | const facet_type& f, |
85 | bool as_long_string) |
86 | { |
87 | |
88 | std::ostreambuf_iterator<charT> oitr(os); |
89 | if (as_long_string) { |
90 | f.put_weekday_long(oitr, wd.as_enum()); |
91 | } |
92 | else { |
93 | f.put_weekday_short(oitr, wd.as_enum()); |
94 | } |
95 | |
96 | } // format_weekday |
97 | |
98 | }; |
99 | |
100 | |
101 | //! Convert ymd to a standard string formatting policies |
102 | template<class ymd_type, |
103 | class facet_type, |
104 | class charT = char> |
105 | class ostream_ymd_formatter |
106 | { |
107 | public: |
108 | typedef typename ymd_type::month_type month_type; |
109 | typedef ostream_month_formatter<facet_type, charT> month_formatter_type; |
110 | typedef std::basic_ostream<charT> ostream_type; |
111 | typedef std::basic_string<charT> foo_type; |
112 | |
113 | //! Convert ymd to a standard string formatting policies |
114 | /*! This is standard code for handling date formatting with |
115 | * year-month-day based date information. This function |
116 | * uses the format_type to control whether the string will |
117 | * contain separator characters, and if so what the character |
118 | * will be. In addtion, it can format the month as either |
119 | * an integer or a string as controled by the formatting |
120 | * policy |
121 | */ |
122 | // static string_type ymd_to_string(ymd_type ymd) |
123 | // { |
124 | // std::ostringstream ss; |
125 | // facet_type dnp; |
126 | // ymd_put(ymd, ss, dnp); |
127 | // return ss.str(); |
128 | // } |
129 | |
130 | |
131 | // Put ymd to ostream -- part of ostream refactor |
132 | static void ymd_put(ymd_type ymd, |
133 | ostream_type& os, |
134 | const facet_type& f) |
135 | { |
136 | boost::io::basic_ios_fill_saver<charT> ifs(os); |
137 | std::ostreambuf_iterator<charT> oitr(os); |
138 | switch (f.date_order()) { |
139 | case ymd_order_iso: { |
140 | os << ymd.year; |
141 | if (f.has_date_sep_chars()) { |
142 | f.month_sep_char(oitr); |
143 | } |
144 | month_formatter_type::format_month(ymd.month, os, f); |
145 | if (f.has_date_sep_chars()) { |
146 | f.day_sep_char(oitr); |
147 | } |
148 | os << std::setw(2) << std::setfill(os.widen('0')) |
149 | << ymd.day; |
150 | break; |
151 | } |
152 | case ymd_order_us: { |
153 | month_formatter_type::format_month(ymd.month, os, f); |
154 | if (f.has_date_sep_chars()) { |
155 | f.day_sep_char(oitr); |
156 | } |
157 | os << std::setw(2) << std::setfill(os.widen('0')) |
158 | << ymd.day; |
159 | if (f.has_date_sep_chars()) { |
160 | f.month_sep_char(oitr); |
161 | } |
162 | os << ymd.year; |
163 | break; |
164 | } |
165 | case ymd_order_dmy: { |
166 | os << std::setw(2) << std::setfill(os.widen('0')) |
167 | << ymd.day; |
168 | if (f.has_date_sep_chars()) { |
169 | f.day_sep_char(oitr); |
170 | } |
171 | month_formatter_type::format_month(ymd.month, os, f); |
172 | if (f.has_date_sep_chars()) { |
173 | f.month_sep_char(oitr); |
174 | } |
175 | os << ymd.year; |
176 | break; |
177 | } |
178 | } |
179 | } |
180 | }; |
181 | |
182 | |
183 | //! Convert a date to string using format policies |
184 | template<class date_type, |
185 | class facet_type, |
186 | class charT = char> |
187 | class ostream_date_formatter |
188 | { |
189 | public: |
190 | typedef std::basic_ostream<charT> ostream_type; |
191 | typedef typename date_type::ymd_type ymd_type; |
192 | |
193 | //! Put date into an ostream |
194 | static void date_put(const date_type& d, |
195 | ostream_type& os, |
196 | const facet_type& f) |
197 | { |
198 | special_values sv = d.as_special(); |
199 | if (sv == not_special) { |
200 | ymd_type ymd = d.year_month_day(); |
201 | ostream_ymd_formatter<ymd_type, facet_type, charT>::ymd_put(ymd, os, f); |
202 | } |
203 | else { // output a special value |
204 | std::ostreambuf_iterator<charT> coi(os); |
205 | f.put_special_value(coi, sv); |
206 | } |
207 | } |
208 | |
209 | |
210 | //! Put date into an ostream |
211 | static void date_put(const date_type& d, |
212 | ostream_type& os) |
213 | { |
214 | //retrieve the local from the ostream |
215 | std::locale locale = os.getloc(); |
216 | if (std::has_facet<facet_type>(locale)) { |
217 | const facet_type& f = std::use_facet<facet_type>(locale); |
218 | date_put(d, os, f); |
219 | } |
220 | else { |
221 | //default to something sensible if no facet installed |
222 | facet_type default_facet; |
223 | date_put(d, os, default_facet); |
224 | } |
225 | } // date_to_ostream |
226 | }; //class date_formatter |
227 | |
228 | |
229 | } } //namespace date_time |
230 | |
231 | #endif |
232 | |
233 | #endif |
234 | |
235 | |