[857] | 1 | #ifndef DATE_TIME_DATE_FORMATTING_LOCALES_HPP___
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| 2 | #define DATE_TIME_DATE_FORMATTING_LOCALES_HPP___
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| 3 |
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| 4 | /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
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| 5 | * Use, modification and distribution is subject to the
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| 6 | * Boost Software License, Version 1.0. (See accompanying
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| 7 | * file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
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| 8 | * Author: Jeff Garland, Bart Garst
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| 9 | * $Date: 2004/01/25 18:26:57 $
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| 10 | */
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| 11 |
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| 12 |
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| 13 | #include "boost/date_time/locale_config.hpp" // set BOOST_DATE_TIME_NO_LOCALE
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| 14 |
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| 15 | #ifndef BOOST_DATE_TIME_NO_LOCALE
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| 16 |
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| 17 | #include "boost/date_time/iso_format.hpp"
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| 18 | #include "boost/date_time/date_names_put.hpp"
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| 19 | #include "boost/date_time/parse_format_base.hpp"
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| 20 | //#include <string>
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| 21 | #include <sstream>
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| 22 | #include <iomanip>
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| 23 |
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| 24 |
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| 25 | namespace boost {
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| 26 | namespace date_time {
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| 27 |
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| 28 | //! Formats a month as as string into an ostream
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| 29 | template<class facet_type,
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| 30 | class charT = char>
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| 31 | class ostream_month_formatter
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| 32 | {
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| 33 | public:
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| 34 | typedef typename facet_type::month_type month_type;
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| 35 | typedef std::basic_ostream<charT> ostream_type;
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| 36 |
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| 37 | //! Formats a month as as string into an output iterator
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| 38 | static void format_month(const month_type& month,
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| 39 | ostream_type& os,
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| 40 | const facet_type& f)
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| 41 | {
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| 42 |
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| 43 | switch (f.month_format())
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| 44 | {
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| 45 | case month_as_short_string:
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| 46 | {
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| 47 | std::ostreambuf_iterator<charT> oitr(os);
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| 48 | f.put_month_short(oitr, month.as_enum());
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| 49 | break;
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| 50 | }
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| 51 | case month_as_long_string:
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| 52 | {
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| 53 | std::ostreambuf_iterator<charT> oitr(os);
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| 54 | f.put_month_long(oitr, month.as_enum());
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| 55 | break;
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| 56 | }
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| 57 | case month_as_integer:
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| 58 | {
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| 59 | charT fill_char = '0';
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| 60 | os << std::setw(2) << std::setfill(fill_char) << month.as_number();
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| 61 | break;
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| 62 | }
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| 63 |
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| 64 | }
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| 65 | } // format_month
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| 66 |
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| 67 | };
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| 68 |
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| 69 |
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| 70 | //! Formats a weekday
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| 71 | template<class weekday_type,
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| 72 | class facet_type,
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| 73 | class charT = char>
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| 74 | class ostream_weekday_formatter
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| 75 | {
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| 76 | public:
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| 77 | typedef typename facet_type::month_type month_type;
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| 78 | typedef std::basic_ostream<charT> ostream_type;
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| 79 |
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| 80 | //! Formats a month as as string into an output iterator
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| 81 | static void format_weekday(const weekday_type& wd,
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| 82 | ostream_type& os,
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| 83 | const facet_type& f,
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| 84 | bool as_long_string)
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| 85 | {
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| 86 |
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| 87 | std::ostreambuf_iterator<charT> oitr(os);
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| 88 | if (as_long_string) {
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| 89 | f.put_weekday_long(oitr, wd.as_enum());
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| 90 | }
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| 91 | else {
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| 92 | f.put_weekday_short(oitr, wd.as_enum());
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| 93 | }
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| 94 |
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| 95 | } // format_weekday
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| 96 |
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| 97 | };
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| 98 |
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| 99 |
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| 100 | //! Convert ymd to a standard string formatting policies
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| 101 | template<class ymd_type,
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| 102 | class facet_type,
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| 103 | class charT = char>
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| 104 | class ostream_ymd_formatter
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| 105 | {
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| 106 | public:
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| 107 | typedef typename ymd_type::month_type month_type;
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| 108 | typedef ostream_month_formatter<facet_type, charT> month_formatter_type;
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| 109 | typedef std::basic_ostream<charT> ostream_type;
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| 110 | typedef std::basic_string<charT> foo_type;
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| 111 |
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| 112 | //! Convert ymd to a standard string formatting policies
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| 113 | /*! This is standard code for handling date formatting with
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| 114 | * year-month-day based date information. This function
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| 115 | * uses the format_type to control whether the string will
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| 116 | * contain separator characters, and if so what the character
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| 117 | * will be. In addtion, it can format the month as either
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| 118 | * an integer or a string as controled by the formatting
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| 119 | * policy
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| 120 | */
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| 121 | // static string_type ymd_to_string(ymd_type ymd)
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| 122 | // {
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| 123 | // std::ostringstream ss;
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| 124 | // facet_type dnp;
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| 125 | // ymd_put(ymd, ss, dnp);
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| 126 | // return ss.str();
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| 127 | // }
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| 128 |
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| 129 |
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| 130 | // Put ymd to ostream -- part of ostream refactor
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| 131 | static void ymd_put(ymd_type ymd,
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| 132 | ostream_type& os,
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| 133 | const facet_type& f)
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| 134 | {
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| 135 | std::ostreambuf_iterator<charT> oitr(os);
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| 136 | charT fill_char = '0';
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| 137 | switch (f.date_order()) {
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| 138 | case ymd_order_iso: {
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| 139 | os << ymd.year;
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| 140 | if (f.has_date_sep_chars()) {
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| 141 | f.month_sep_char(oitr);
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| 142 | }
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| 143 | month_formatter_type::format_month(ymd.month, os, f);
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| 144 | if (f.has_date_sep_chars()) {
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| 145 | f.day_sep_char(oitr);
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| 146 | }
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| 147 | os << std::setw(2) << std::setfill(fill_char)
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| 148 | << ymd.day;
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| 149 | break;
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| 150 | }
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| 151 | case ymd_order_us: {
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| 152 | month_formatter_type::format_month(ymd.month, os, f);
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| 153 | if (f.has_date_sep_chars()) {
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| 154 | f.day_sep_char(oitr);
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| 155 | }
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| 156 | os << std::setw(2) << std::setfill(fill_char)
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| 157 | << ymd.day;
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| 158 | if (f.has_date_sep_chars()) {
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| 159 | f.month_sep_char(oitr);
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| 160 | }
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| 161 | os << ymd.year;
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| 162 | break;
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| 163 | }
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| 164 | case ymd_order_dmy: {
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| 165 | os << std::setw(2) << std::setfill(fill_char)
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| 166 | << ymd.day;
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| 167 | if (f.has_date_sep_chars()) {
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| 168 | f.day_sep_char(oitr);
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| 169 | }
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| 170 | month_formatter_type::format_month(ymd.month, os, f);
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| 171 | if (f.has_date_sep_chars()) {
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| 172 | f.month_sep_char(oitr);
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| 173 | }
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| 174 | os << ymd.year;
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| 175 | break;
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| 176 | }
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| 177 | }
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| 178 | }
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| 179 | };
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| 180 |
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| 181 |
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| 182 | //! Convert a date to string using format policies
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| 183 | template<class date_type,
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| 184 | class facet_type,
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| 185 | class charT = char>
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| 186 | class ostream_date_formatter
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| 187 | {
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| 188 | public:
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| 189 | typedef std::basic_ostream<charT> ostream_type;
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| 190 | typedef typename date_type::ymd_type ymd_type;
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| 191 |
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| 192 | //! Put date into an ostream
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| 193 | static void date_put(const date_type& d,
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| 194 | ostream_type& os,
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| 195 | const facet_type& f)
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| 196 | {
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| 197 | special_values sv = d.as_special();
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| 198 | if (sv == not_special) {
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| 199 | ymd_type ymd = d.year_month_day();
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| 200 | ostream_ymd_formatter<ymd_type, facet_type, charT>::ymd_put(ymd, os, f);
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| 201 | }
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| 202 | else { // output a special value
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| 203 | std::ostreambuf_iterator<charT> coi(os);
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| 204 | f.put_special_value(coi, sv);
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| 205 | }
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| 206 | }
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| 207 |
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| 208 |
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| 209 | //! Put date into an ostream
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| 210 | static void date_put(const date_type& d,
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| 211 | ostream_type& os)
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| 212 | {
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| 213 | //retrieve the local from the ostream
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| 214 | std::locale locale = os.getloc();
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| 215 | if (std::has_facet<facet_type>(locale)) {
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| 216 | const facet_type& f = std::use_facet<facet_type>(locale);
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| 217 | date_put(d, os, f);
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| 218 | }
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| 219 | else {
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| 220 | //default to something sensible if no facet installed
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| 221 | facet_type default_facet;
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| 222 | date_put(d, os, default_facet);
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| 223 | }
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| 224 | } // date_to_ostream
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| 225 | }; //class date_formatter
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| 226 |
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| 227 |
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| 228 | } } //namespace date_time
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| 229 |
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| 230 | #endif
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| 231 |
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| 232 | #endif
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| 233 |
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