Chris@16: #ifndef DATE_TIME_DATE_FORMATTING_LIMITED_HPP___
Chris@16: #define DATE_TIME_DATE_FORMATTING_LIMITED_HPP___
Chris@16: 
Chris@16: /* Copyright (c) 2002-2004 CrystalClear Software, Inc.
Chris@16:  * Use, modification and distribution is subject to the 
Chris@16:  * Boost Software License, Version 1.0. (See accompanying
Chris@16:  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  * Author: Jeff Garland, Bart Garst
Chris@101:  * $Date$
Chris@16:  */
Chris@16: 
Chris@16: #include "boost/date_time/iso_format.hpp"
Chris@16: #include "boost/date_time/compiler_config.hpp"
Chris@16: #include <string>
Chris@16: #include <sstream>
Chris@16: #include <iomanip>
Chris@16: 
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace date_time {
Chris@16: 
Chris@16:   //! Formats a month as as string into an ostream
Chris@16:   template<class month_type, class format_type>
Chris@16:   class month_formatter
Chris@16:   {
Chris@16:   public:
Chris@16:     //! Formats a month as as string into an ostream
Chris@16:     /*! This function demands that month_type provide
Chris@16:      *  functions for converting to short and long strings
Chris@16:      *  if that capability is used.
Chris@16:      */
Chris@16:     static std::ostream& format_month(const month_type& month,
Chris@16:                                       std::ostream& os)
Chris@16:     {
Chris@16:       switch (format_type::month_format()) 
Chris@16:       {
Chris@16:         case month_as_short_string: 
Chris@16:         { 
Chris@16:           os << month.as_short_string(); 
Chris@16:           break;
Chris@16:         }
Chris@16:         case month_as_long_string: 
Chris@16:         { 
Chris@16:           os << month.as_long_string(); 
Chris@16:           break;
Chris@16:         }
Chris@16:         case month_as_integer: 
Chris@16:         { 
Chris@16:           os << std::setw(2) << std::setfill('0') << month.as_number();
Chris@16:           break;
Chris@16:         }
Chris@16:      
Chris@16:       }
Chris@16:       return os;
Chris@16:     } // format_month
Chris@16:   };
Chris@16: 
Chris@16: 
Chris@16:   //! Convert ymd to a standard string formatting policies
Chris@16:   template<class ymd_type, class format_type>
Chris@16:   class ymd_formatter
Chris@16:   {
Chris@16:   public:
Chris@16:     //! Convert ymd to a standard string formatting policies
Chris@16:     /*! This is standard code for handling date formatting with
Chris@16:      *  year-month-day based date information.  This function 
Chris@16:      *  uses the format_type to control whether the string will
Chris@16:      *  contain separator characters, and if so what the character
Chris@16:      *  will be.  In addtion, it can format the month as either
Chris@16:      *  an integer or a string as controled by the formatting 
Chris@16:      *  policy
Chris@16:      */ 
Chris@16:     static std::string ymd_to_string(ymd_type ymd)
Chris@16:     {
Chris@16:       typedef typename ymd_type::month_type month_type;
Chris@16:       std::ostringstream ss;
Chris@16:       ss << ymd.year;
Chris@16:       if (format_type::has_date_sep_chars()) {
Chris@16:         ss << format_type::month_sep_char();
Chris@16:       }
Chris@16:       //this name is a bit ugly, oh well....
Chris@16:       month_formatter<month_type,format_type>::format_month(ymd.month, ss);
Chris@16:       if (format_type::has_date_sep_chars()) {
Chris@16:         ss << format_type::day_sep_char();
Chris@16:       }
Chris@16:       ss  << std::setw(2) << std::setfill('0') 
Chris@16:           << ymd.day;
Chris@16:       return ss.str();
Chris@16:     }
Chris@16:   };
Chris@16: 
Chris@16: 
Chris@16:   //! Convert a date to string using format policies
Chris@16:   template<class date_type, class format_type>
Chris@16:   class date_formatter
Chris@16:   {
Chris@16:   public:
Chris@16:     //! Convert to a date to standard string using format policies
Chris@16:     static std::string date_to_string(date_type d)
Chris@16:     {
Chris@16:       typedef typename date_type::ymd_type ymd_type;
Chris@16:       if (d.is_not_a_date()) {
Chris@16:         return format_type::not_a_date();
Chris@16:       }
Chris@16:       if (d.is_neg_infinity()) {
Chris@16:         return format_type::neg_infinity();
Chris@16:       }
Chris@16:       if (d.is_pos_infinity()) {
Chris@16:         return format_type::pos_infinity();
Chris@16:       }
Chris@16:       ymd_type ymd = d.year_month_day();
Chris@16:       return ymd_formatter<ymd_type, format_type>::ymd_to_string(ymd);
Chris@16:     }    
Chris@16:   };
Chris@16: 
Chris@16: 
Chris@16: } } //namespace date_time
Chris@16: 
Chris@16: 
Chris@16: #endif
Chris@16: