boost/date_time/gregorian/formatters.hpp

   1 #ifndef GREGORIAN_FORMATTERS_HPP___
   2 #define GREGORIAN_FORMATTERS_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 #include "boost/date_time/compiler_config.hpp"
  13 #include "boost/date_time/gregorian/gregorian_types.hpp"
  14 #if defined(BOOST_DATE_TIME_INCLUDE_LIMITED_HEADERS)
  15 #include "boost/date_time/date_formatting_limited.hpp"
  16 #else
  17 #include "boost/date_time/date_formatting.hpp"
  18 #endif
  19 #include "boost/date_time/iso_format.hpp"
  20 #include "boost/date_time/date_format_simple.hpp"
  21
  22 /* NOTE: "to_*_string" code for older compilers, ones that define
  23  * BOOST_DATE_TIME_INCLUDE_LIMITED_HEADERS, is located in
  24  * formatters_limited.hpp
  25  */
  26
  27 namespace boost {
  28 namespace gregorian {
  29
  30   // wrapper function for to_simple_(w)string(date)
  31   template<class charT>
  32   inline
  33   std::basic_string<charT> to_simple_string_type(const date& d) {
  34     return date_time::date_formatter<date,date_time::simple_format<charT>,charT>::date_to_string(d);
  35   }
  36   //! To YYYY-mmm-DD string where mmm 3 char month name. Example:  2002-Jan-01
  37   /*!\ingroup date_format
  38    */
  39   inline std::string to_simple_string(const date& d) {
  40     return to_simple_string_type<char>(d);
  41   }
  42
  43
  44   // wrapper function for to_simple_(w)string(date_period)
  45   template<class charT>
  46   inline std::basic_string<charT> to_simple_string_type(const date_period& d) {
  47     typedef std::basic_string<charT> string_type;
  48     charT b = '[', m = '/', e=']';
  49
  50     string_type d1(date_time::date_formatter<date,date_time::simple_format<charT>,charT>::date_to_string(d.begin()));
  51     string_type d2(date_time::date_formatter<date,date_time::simple_format<charT>,charT>::date_to_string(d.last()));
  52     return string_type(b + d1 + m + d2 + e);
  53   }
  54   //! Convert date period to simple string. Example: [2002-Jan-01/2002-Jan-02]
  55   /*!\ingroup date_format
  56    */
  57   inline std::string to_simple_string(const date_period& d) {
  58     return to_simple_string_type<char>(d);
  59   }
  60
  61   // wrapper function for to_iso_(w)string(date_period)
  62   template<class charT>
  63   inline std::basic_string<charT> to_iso_string_type(const date_period& d) {
  64     charT sep = '/';
  65     std::basic_string<charT> s(date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d.begin()));
  66     return s + sep + date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d.last());
  67   }
  68   //! Date period to iso standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
  69   /*!\ingroup date_format
  70    */
  71   inline std::string to_iso_string(const date_period& d) {
  72     return to_iso_string_type<char>(d);
  73   }
  74
  75
  76   // wrapper function for to_iso_extended_(w)string(date)
  77   template<class charT>
  78   inline std::basic_string<charT> to_iso_extended_string_type(const date& d) {
  79     return date_time::date_formatter<date,date_time::iso_extended_format<charT>,charT>::date_to_string(d);
  80   }
  81   //! Convert to iso extended format string CCYY-MM-DD. Example 2002-12-31
  82   /*!\ingroup date_format
  83    */
  84   inline std::string to_iso_extended_string(const date& d) {
  85     return to_iso_extended_string_type<char>(d);
  86   }
  87
  88   // wrapper function for to_iso_(w)string(date)
  89   template<class charT>
  90   inline std::basic_string<charT> to_iso_string_type(const date& d) {
  91     return date_time::date_formatter<date,date_time::iso_format<charT>,charT>::date_to_string(d);
  92   }
  93   //! Convert to iso standard string YYYYMMDD. Example: 20021231
  94   /*!\ingroup date_format
  95    */
  96   inline std::string to_iso_string(const date& d) {
  97     return to_iso_string_type<char>(d);
  98   }
  99
 100
 101
 102
 103   // wrapper function for to_sql_(w)string(date)
 104   template<class charT>
 105   inline std::basic_string<charT> to_sql_string_type(const date& d)
 106   {
 107     date::ymd_type ymd = d.year_month_day();
 108     std::basic_ostringstream<charT> ss;
 109     ss << ymd.year << "-"
 110        << std::setw(2) << std::setfill(ss.widen('0'))
 111        << ymd.month.as_number() //solves problem with gcc 3.1 hanging
 112        << "-"
 113        << std::setw(2) << std::setfill(ss.widen('0'))
 114        << ymd.day;
 115     return ss.str();
 116   }
 117   inline std::string to_sql_string(const date& d) {
 118     return to_sql_string_type<char>(d);
 119   }
 120
 121
 122 #if !defined(BOOST_NO_STD_WSTRING)
 123   //! Convert date period to simple string. Example: [2002-Jan-01/2002-Jan-02]
 124   /*!\ingroup date_format
 125    */
 126   inline std::wstring to_simple_wstring(const date_period& d) {
 127     return to_simple_string_type<wchar_t>(d);
 128   }
 129   //! To YYYY-mmm-DD string where mmm 3 char month name. Example:  2002-Jan-01
 130   /*!\ingroup date_format
 131    */
 132   inline std::wstring to_simple_wstring(const date& d) {
 133     return to_simple_string_type<wchar_t>(d);
 134   }
 135   //! Date period to iso standard format CCYYMMDD/CCYYMMDD. Example: 20021225/20021231
 136   /*!\ingroup date_format
 137    */
 138   inline std::wstring to_iso_wstring(const date_period& d) {
 139     return to_iso_string_type<wchar_t>(d);
 140   }
 141   //! Convert to iso extended format string CCYY-MM-DD. Example 2002-12-31
 142   /*!\ingroup date_format
 143    */
 144   inline std::wstring to_iso_extended_wstring(const date& d) {
 145     return to_iso_extended_string_type<wchar_t>(d);
 146   }
 147   //! Convert to iso standard string YYYYMMDD. Example: 20021231
 148   /*!\ingroup date_format
 149    */
 150   inline std::wstring to_iso_wstring(const date& d) {
 151     return to_iso_string_type<wchar_t>(d);
 152   }
 153   inline std::wstring to_sql_wstring(const date& d) {
 154     return to_sql_string_type<wchar_t>(d);
 155   }
 156 #endif // BOOST_NO_STD_WSTRING
 157
 158 } } //namespace gregorian
 159
 160
 161 #endif
 162