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.txt or http://www.boost.org/LICENSE_1_0.txt) |
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8 | * Author: Jeff Garland, Bart Garst |
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9 | * $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ |
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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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