[44] | 1 | #ifndef _DATE_TIME_DATE_GENERATOR_FORMATTER__HPP___ |
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| 2 | #define _DATE_TIME_DATE_GENERATOR_FORMATTER__HPP___ |
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| 3 | |
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| 4 | /* Copyright (c) 2004 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: 2008-11-13 14:05:31 -0500 (Thu, 13 Nov 2008) $ |
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| 10 | */ |
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| 11 | |
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| 12 | #include <iostream> |
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| 13 | #include <string> |
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| 14 | #include <vector> |
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| 15 | #include <algorithm> |
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| 16 | #include "boost/date_time/date_generators.hpp" |
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| 17 | |
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| 18 | namespace boost { |
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| 19 | namespace date_time { |
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| 20 | |
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| 21 | //! Formats date_generators for output |
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| 22 | /*! Formatting of date_generators follows specific orders for the |
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| 23 | * various types of date_generators. |
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| 24 | * - partial_date => "dd Month" |
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| 25 | * - nth_day_of_the_week_in_month => "nth weekday of month" |
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| 26 | * - first_day_of_the_week_in_month => "first weekday of month" |
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| 27 | * - last_day_of_the_week_in_month => "last weekday of month" |
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| 28 | * - first_day_of_the_week_after => "weekday after" |
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| 29 | * - first_day_of_the_week_before => "weekday before" |
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| 30 | * While the order of the elements in these phrases cannot be changed, |
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| 31 | * the elements themselves can be. Weekday and Month get their formats |
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| 32 | * and names from the date_facet. The remaining elements are stored in |
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| 33 | * the date_generator_formatter and can be customized upon construction |
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| 34 | * or via a member function. The default elements are those shown in the |
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| 35 | * examples above. |
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| 36 | */ |
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| 37 | template <class date_type, class CharT, class OutItrT = std::ostreambuf_iterator<CharT, std::char_traits<CharT> > > |
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| 38 | class date_generator_formatter { |
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| 39 | public: |
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| 40 | typedef partial_date<date_type> partial_date_type; |
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| 41 | typedef nth_kday_of_month<date_type> nth_kday_type; |
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| 42 | typedef first_kday_of_month<date_type> first_kday_type; |
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| 43 | typedef last_kday_of_month<date_type> last_kday_type; |
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| 44 | typedef first_kday_after<date_type> kday_after_type; |
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| 45 | typedef first_kday_before<date_type> kday_before_type; |
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| 46 | |
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| 47 | typedef CharT char_type; |
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| 48 | typedef std::basic_string<char_type> string_type; |
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| 49 | typedef std::vector<string_type> collection_type; |
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| 50 | static const char_type first_string[6]; |
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| 51 | static const char_type second_string[7]; |
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| 52 | static const char_type third_string[6]; |
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| 53 | static const char_type fourth_string[7]; |
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| 54 | static const char_type fifth_string[6]; |
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| 55 | static const char_type last_string[5]; |
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| 56 | static const char_type before_string[8]; |
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| 57 | static const char_type after_string[6]; |
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| 58 | static const char_type of_string[3]; |
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| 59 | |
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| 60 | enum phrase_elements {first=0, second, third, fourth, fifth, last, |
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| 61 | before, after, of, number_of_phrase_elements}; |
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| 62 | |
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| 63 | //! Default format elements used |
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| 64 | date_generator_formatter() |
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| 65 | { |
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| 66 | phrase_strings.reserve(number_of_phrase_elements); |
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| 67 | phrase_strings.push_back(string_type(first_string)); |
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| 68 | phrase_strings.push_back(string_type(second_string)); |
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| 69 | phrase_strings.push_back(string_type(third_string)); |
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| 70 | phrase_strings.push_back(string_type(fourth_string)); |
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| 71 | phrase_strings.push_back(string_type(fifth_string)); |
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| 72 | phrase_strings.push_back(string_type(last_string)); |
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| 73 | phrase_strings.push_back(string_type(before_string)); |
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| 74 | phrase_strings.push_back(string_type(after_string)); |
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| 75 | phrase_strings.push_back(string_type(of_string)); |
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| 76 | } |
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| 77 | |
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| 78 | //! Constructor that allows for a custom set of phrase elements |
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| 79 | date_generator_formatter(const string_type& first_str, |
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| 80 | const string_type& second_str, |
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| 81 | const string_type& third_str, |
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| 82 | const string_type& fourth_str, |
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| 83 | const string_type& fifth_str, |
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| 84 | const string_type& last_str, |
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| 85 | const string_type& before_str, |
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| 86 | const string_type& after_str, |
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| 87 | const string_type& of_str) |
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| 88 | { |
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| 89 | phrase_strings.reserve(number_of_phrase_elements); |
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| 90 | phrase_strings.push_back(first_str); |
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| 91 | phrase_strings.push_back(second_str); |
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| 92 | phrase_strings.push_back(third_str); |
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| 93 | phrase_strings.push_back(fourth_str); |
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| 94 | phrase_strings.push_back(fifth_str); |
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| 95 | phrase_strings.push_back(last_str); |
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| 96 | phrase_strings.push_back(before_str); |
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| 97 | phrase_strings.push_back(after_str); |
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| 98 | phrase_strings.push_back(of_str); |
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| 99 | } |
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| 100 | |
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| 101 | //! Replace the set of phrase elements with those contained in new_strings |
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| 102 | /*! The order of the strings in the given collection is important. |
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| 103 | * They must follow: |
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| 104 | * - first, second, third, fourth, fifth, last, before, after, of. |
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| 105 | * |
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| 106 | * It is not necessary to send in a complete set if only a few |
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| 107 | * elements are to be replaced as long as the correct beg_pos is used. |
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| 108 | * |
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| 109 | * Ex: To keep the default first through fifth elements, but replace |
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| 110 | * the rest with a collection of: |
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| 111 | * - "final", "prior", "following", "in". |
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| 112 | * The beg_pos of date_generator_formatter::last would be used. |
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| 113 | */ |
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| 114 | void elements(const collection_type& new_strings, |
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| 115 | phrase_elements beg_pos=first) |
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| 116 | { |
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| 117 | if(beg_pos < number_of_phrase_elements) { |
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| 118 | typename collection_type::iterator itr = phrase_strings.begin(); |
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| 119 | itr += beg_pos; |
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| 120 | std::copy(new_strings.begin(), new_strings.end(), |
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| 121 | itr); |
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| 122 | //phrase_strings.begin()); |
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| 123 | } |
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| 124 | } |
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| 125 | |
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| 126 | //!Put a partial_date => "dd Month" |
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| 127 | template<class facet_type> |
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| 128 | OutItrT put_partial_date(OutItrT next, std::ios_base& a_ios, |
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| 129 | CharT a_fill, const partial_date_type& pd, |
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| 130 | const facet_type& facet) const |
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| 131 | { |
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| 132 | facet.put(next, a_ios, a_fill, pd.day()); |
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| 133 | next = a_fill; //TODO change this ??? |
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| 134 | facet.put(next, a_ios, a_fill, pd.month()); |
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| 135 | return next; |
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| 136 | } |
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| 137 | |
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| 138 | //! Put an nth_day_of_the_week_in_month => "nth weekday of month" |
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| 139 | template<class facet_type> |
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| 140 | OutItrT put_nth_kday(OutItrT next, std::ios_base& a_ios, |
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| 141 | CharT a_fill, const nth_kday_type& nkd, |
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| 142 | const facet_type& facet) const |
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| 143 | { |
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| 144 | put_string(next, phrase_strings[nkd.nth_week() -1]); |
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| 145 | next = a_fill; //TODO change this ??? |
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| 146 | facet.put(next, a_ios, a_fill, nkd.day_of_week()); |
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| 147 | next = a_fill; //TODO change this ??? |
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| 148 | put_string(next, string_type(of_string)); |
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| 149 | next = a_fill; //TODO change this ??? |
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| 150 | facet.put(next, a_ios, a_fill, nkd.month()); |
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| 151 | return next; |
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| 152 | } |
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| 153 | |
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| 154 | //! Put a first_day_of_the_week_in_month => "first weekday of month" |
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| 155 | template<class facet_type> |
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| 156 | OutItrT put_first_kday(OutItrT next, std::ios_base& a_ios, |
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| 157 | CharT a_fill, const first_kday_type& fkd, |
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| 158 | const facet_type& facet) const |
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| 159 | { |
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| 160 | put_string(next, phrase_strings[first]); |
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| 161 | next = a_fill; //TODO change this ??? |
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| 162 | facet.put(next, a_ios, a_fill, fkd.day_of_week()); |
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| 163 | next = a_fill; //TODO change this ??? |
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| 164 | put_string(next, string_type(of_string)); |
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| 165 | next = a_fill; //TODO change this ??? |
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| 166 | facet.put(next, a_ios, a_fill, fkd.month()); |
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| 167 | return next; |
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| 168 | } |
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| 169 | |
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| 170 | //! Put a last_day_of_the_week_in_month => "last weekday of month" |
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| 171 | template<class facet_type> |
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| 172 | OutItrT put_last_kday(OutItrT next, std::ios_base& a_ios, |
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| 173 | CharT a_fill, const last_kday_type& lkd, |
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| 174 | const facet_type& facet) const |
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| 175 | { |
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| 176 | put_string(next, phrase_strings[last]); |
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| 177 | next = a_fill; //TODO change this ??? |
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| 178 | facet.put(next, a_ios, a_fill, lkd.day_of_week()); |
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| 179 | next = a_fill; //TODO change this ??? |
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| 180 | put_string(next, string_type(of_string)); |
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| 181 | next = a_fill; //TODO change this ??? |
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| 182 | facet.put(next, a_ios, a_fill, lkd.month()); |
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| 183 | return next; |
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| 184 | } |
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| 185 | |
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| 186 | //! Put a first_day_of_the_week_before => "weekday before" |
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| 187 | template<class facet_type> |
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| 188 | OutItrT put_kday_before(OutItrT next, std::ios_base& a_ios, |
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| 189 | CharT a_fill, const kday_before_type& fkb, |
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| 190 | const facet_type& facet) const |
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| 191 | { |
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| 192 | facet.put(next, a_ios, a_fill, fkb.day_of_week()); |
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| 193 | next = a_fill; //TODO change this ??? |
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| 194 | put_string(next, phrase_strings[before]); |
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| 195 | return next; |
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| 196 | } |
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| 197 | |
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| 198 | //! Put a first_day_of_the_week_after => "weekday after" |
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| 199 | template<class facet_type> |
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| 200 | OutItrT put_kday_after(OutItrT next, std::ios_base& a_ios, |
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| 201 | CharT a_fill, const kday_after_type& fka, |
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| 202 | const facet_type& facet) const |
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| 203 | { |
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| 204 | facet.put(next, a_ios, a_fill, fka.day_of_week()); |
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| 205 | next = a_fill; //TODO change this ??? |
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| 206 | put_string(next, phrase_strings[after]); |
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| 207 | return next; |
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| 208 | } |
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| 209 | |
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| 210 | |
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| 211 | private: |
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| 212 | collection_type phrase_strings; |
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| 213 | |
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| 214 | //! helper function to put the various member string into stream |
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| 215 | OutItrT put_string(OutItrT next, const string_type& str) const |
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| 216 | { |
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| 217 | typename string_type::const_iterator itr = str.begin(); |
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| 218 | while(itr != str.end()) { |
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| 219 | *next = *itr; |
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| 220 | ++itr; |
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| 221 | ++next; |
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| 222 | } |
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| 223 | return next; |
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| 224 | } |
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| 225 | }; |
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| 226 | |
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| 227 | template<class date_type, class CharT, class OutItrT> |
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| 228 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 229 | date_generator_formatter<date_type, CharT, OutItrT>::first_string[6] = |
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| 230 | {'f','i','r','s','t'}; |
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| 231 | template<class date_type, class CharT, class OutItrT> |
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| 232 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 233 | date_generator_formatter<date_type, CharT, OutItrT>::second_string[7] = |
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| 234 | {'s','e','c','o','n','d'}; |
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| 235 | template<class date_type, class CharT, class OutItrT> |
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| 236 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 237 | date_generator_formatter<date_type, CharT, OutItrT>::third_string[6] = |
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| 238 | {'t','h','i','r','d'}; |
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| 239 | template<class date_type, class CharT, class OutItrT> |
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| 240 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 241 | date_generator_formatter<date_type, CharT, OutItrT>::fourth_string[7] = |
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| 242 | {'f','o','u','r','t','h'}; |
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| 243 | template<class date_type, class CharT, class OutItrT> |
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| 244 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 245 | date_generator_formatter<date_type, CharT, OutItrT>::fifth_string[6] = |
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| 246 | {'f','i','f','t','h'}; |
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| 247 | template<class date_type, class CharT, class OutItrT> |
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| 248 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 249 | date_generator_formatter<date_type, CharT, OutItrT>::last_string[5] = |
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| 250 | {'l','a','s','t'}; |
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| 251 | template<class date_type, class CharT, class OutItrT> |
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| 252 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 253 | date_generator_formatter<date_type, CharT, OutItrT>::before_string[8] = |
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| 254 | {'b','e','f','o','r','e'}; |
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| 255 | template<class date_type, class CharT, class OutItrT> |
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| 256 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 257 | date_generator_formatter<date_type, CharT, OutItrT>::after_string[6] = |
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| 258 | {'a','f','t','e','r'}; |
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| 259 | template<class date_type, class CharT, class OutItrT> |
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| 260 | const typename date_generator_formatter<date_type, CharT, OutItrT>::char_type |
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| 261 | date_generator_formatter<date_type, CharT, OutItrT>::of_string[3] = |
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| 262 | {'o','f'}; |
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| 263 | } } // namespaces |
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| 264 | |
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| 265 | #endif // _DATE_TIME_DATE_GENERATOR_FORMATTER__HPP___ |
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