| #ifndef DATE_TIME_DATE_FORMATTING_HPP___ |
| #define DATE_TIME_DATE_FORMATTING_HPP___ |
| |
| /* Copyright (c) 2002-2004 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, Bart Garst |
| * $Date: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ |
| */ |
| |
| #include "boost/date_time/iso_format.hpp" |
| #include "boost/date_time/compiler_config.hpp" |
| #include <string> |
| #include <sstream> |
| #include <iomanip> |
| |
| /* NOTE: "formatter" code for older compilers, ones that define |
| * BOOST_DATE_TIME_INCLUDE_LIMITED_HEADERS, is located in |
| * date_formatting_limited.hpp |
| */ |
| |
| namespace boost { |
| namespace date_time { |
| |
| //! Formats a month as as string into an ostream |
| template<class month_type, class format_type, class charT=char> |
| class month_formatter |
| { |
| typedef std::basic_ostream<charT> ostream_type; |
| public: |
| //! Formats a month as as string into an ostream |
| /*! This function demands that month_type provide |
| * functions for converting to short and long strings |
| * if that capability is used. |
| */ |
| static ostream_type& format_month(const month_type& month, |
| ostream_type &os) |
| { |
| switch (format_type::month_format()) |
| { |
| case month_as_short_string: |
| { |
| os << month.as_short_string(); |
| break; |
| } |
| case month_as_long_string: |
| { |
| os << month.as_long_string(); |
| break; |
| } |
| case month_as_integer: |
| { |
| os << std::setw(2) << std::setfill(os.widen('0')) << month.as_number(); |
| break; |
| } |
| |
| } |
| return os; |
| } // format_month |
| }; |
| |
| |
| //! Convert ymd to a standard string formatting policies |
| template<class ymd_type, class format_type, class charT=char> |
| class ymd_formatter |
| { |
| public: |
| //! Convert ymd to a standard string formatting policies |
| /*! This is standard code for handling date formatting with |
| * year-month-day based date information. This function |
| * uses the format_type to control whether the string will |
| * contain separator characters, and if so what the character |
| * will be. In addtion, it can format the month as either |
| * an integer or a string as controled by the formatting |
| * policy |
| */ |
| static std::basic_string<charT> ymd_to_string(ymd_type ymd) |
| { |
| typedef typename ymd_type::month_type month_type; |
| std::basic_ostringstream<charT> ss; |
| ss << ymd.year; |
| if (format_type::has_date_sep_chars()) { |
| ss << format_type::month_sep_char(); |
| } |
| //this name is a bit ugly, oh well.... |
| month_formatter<month_type,format_type,charT>::format_month(ymd.month, ss); |
| if (format_type::has_date_sep_chars()) { |
| ss << format_type::day_sep_char(); |
| } |
| ss << std::setw(2) << std::setfill(ss.widen('0')) |
| << ymd.day; |
| return ss.str(); |
| } |
| }; |
| |
| |
| //! Convert a date to string using format policies |
| template<class date_type, class format_type, class charT=char> |
| class date_formatter |
| { |
| public: |
| typedef std::basic_string<charT> string_type; |
| //! Convert to a date to standard string using format policies |
| static string_type date_to_string(date_type d) |
| { |
| typedef typename date_type::ymd_type ymd_type; |
| if (d.is_not_a_date()) { |
| return string_type(format_type::not_a_date()); |
| } |
| if (d.is_neg_infinity()) { |
| return string_type(format_type::neg_infinity()); |
| } |
| if (d.is_pos_infinity()) { |
| return string_type(format_type::pos_infinity()); |
| } |
| ymd_type ymd = d.year_month_day(); |
| return ymd_formatter<ymd_type, format_type, charT>::ymd_to_string(ymd); |
| } |
| }; |
| |
| |
| } } //namespace date_time |
| |
| |
| #endif |
| |