| #ifndef DATE_TIME_STRINGS_FROM_FACET__HPP___ |
| #define DATE_TIME_STRINGS_FROM_FACET__HPP___ |
| |
| /* Copyright (c) 2004 CrystalClear Software, Inc. |
| * Use, modification and distribution is subject to the |
| * Boost Software License, Version 1.0. (See accompanying |
| * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
| * Author: Jeff Garland |
| * $Date: 2009-02-01 06:29:43 -0500 (Sun, 01 Feb 2009) $ |
| */ |
| |
| #include <sstream> |
| #include <string> |
| #include <vector> |
| #include <locale> |
| |
| namespace boost { namespace date_time { |
| |
| //! This function gathers up all the month strings from a std::locale |
| /*! Using the time_put facet, this function creates a collection of |
| * all the month strings from a locale. This is handy when building |
| * custom date parsers or formatters that need to be localized. |
| * |
| *@param charT The type of char to use when gathering typically char |
| * or wchar_t. |
| *@param locale The locale to use when gathering the strings |
| *@param short_strings True(default) to gather short strings, |
| * false for long strings. |
| *@return A vector of strings containing the strings in order. eg: |
| * Jan, Feb, Mar, etc. |
| */ |
| template<typename charT> |
| std::vector<std::basic_string<charT> > |
| gather_month_strings(const std::locale& locale, bool short_strings=true) |
| { |
| typedef std::basic_string<charT> string_type; |
| typedef std::vector<string_type> collection_type; |
| typedef std::basic_ostringstream<charT> ostream_type; |
| typedef std::ostreambuf_iterator<charT> ostream_iter_type; |
| typedef std::basic_ostringstream<charT> stringstream_type; |
| typedef std::time_put<charT> time_put_facet_type; |
| charT short_fmt[3] = { '%', 'b' }; |
| charT long_fmt[3] = { '%', 'B' }; |
| collection_type months; |
| string_type outfmt(short_fmt); |
| if (!short_strings) { |
| outfmt = long_fmt; |
| } |
| { |
| //grab the needed strings by using the locale to |
| //output each month |
| const charT* p_outfmt = outfmt.c_str(), *p_outfmt_end = p_outfmt + outfmt.size(); |
| for (int m=0; m < 12; m++) { |
| tm tm_value; |
| tm_value.tm_mon = m; |
| stringstream_type ss; |
| ostream_iter_type oitr(ss); |
| std::use_facet<time_put_facet_type>(locale).put(oitr, ss, ss.fill(), |
| &tm_value, |
| p_outfmt, |
| p_outfmt_end); |
| months.push_back(ss.str()); |
| } |
| } |
| return months; |
| } |
| |
| //! This function gathers up all the weekday strings from a std::locale |
| /*! Using the time_put facet, this function creates a collection of |
| * all the weekday strings from a locale starting with the string for |
| * 'Sunday'. This is handy when building custom date parsers or |
| * formatters that need to be localized. |
| * |
| *@param charT The type of char to use when gathering typically char |
| * or wchar_t. |
| *@param locale The locale to use when gathering the strings |
| *@param short_strings True(default) to gather short strings, |
| * false for long strings. |
| *@return A vector of strings containing the weekdays in order. eg: |
| * Sun, Mon, Tue, Wed, Thu, Fri, Sat |
| */ |
| template<typename charT> |
| std::vector<std::basic_string<charT> > |
| gather_weekday_strings(const std::locale& locale, bool short_strings=true) |
| { |
| typedef std::basic_string<charT> string_type; |
| typedef std::vector<string_type> collection_type; |
| typedef std::basic_ostringstream<charT> ostream_type; |
| typedef std::ostreambuf_iterator<charT> ostream_iter_type; |
| typedef std::basic_ostringstream<charT> stringstream_type; |
| typedef std::time_put<charT> time_put_facet_type; |
| charT short_fmt[3] = { '%', 'a' }; |
| charT long_fmt[3] = { '%', 'A' }; |
| |
| collection_type weekdays; |
| |
| |
| string_type outfmt(short_fmt); |
| if (!short_strings) { |
| outfmt = long_fmt; |
| } |
| { |
| //grab the needed strings by using the locale to |
| //output each month / weekday |
| const charT* p_outfmt = outfmt.c_str(), *p_outfmt_end = p_outfmt + outfmt.size(); |
| for (int i=0; i < 7; i++) { |
| tm tm_value; |
| tm_value.tm_wday = i; |
| stringstream_type ss; |
| ostream_iter_type oitr(ss); |
| std::use_facet<time_put_facet_type>(locale).put(oitr, ss, ss.fill(), |
| &tm_value, |
| p_outfmt, |
| p_outfmt_end); |
| |
| weekdays.push_back(ss.str()); |
| } |
| } |
| return weekdays; |
| } |
| |
| } } //namespace |
| |
| |
| #endif |