#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