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 #ifndef ISO_FORMAT_HPP___
 #define ISO_FORMAT_HPP___
 
 /* Copyright (c) 2002,2003 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
  * $Date$
  */
 
 #include "boost/date_time/parse_format_base.hpp"
 
 namespace boost {
 namespace date_time {
 
 //! Class to provide common ISO 8601 formatting spec
 template<class charT>
 class iso_format_base {
 public:
   //! Describe month format -- its an integer in ISO 8601 format
   static month_format_spec month_format()
   {
     return month_as_integer;
   }
 
   //! String used printed is date is invalid
   static const charT* not_a_date()
   {     
     return "not-a-date-time";
   }
   //! String used to for positive infinity value
   static const charT* pos_infinity()
   {
     return "+infinity";
   }
   //! String used to for positive infinity value
   static const charT* neg_infinity()
   {
     return "-infinity";
   }
 
   //! ISO 8601 char for a year -- used in durations
   static charT year_sep_char()
   {
     return 'Y';
   }
   //! ISO 8601 char for a month
   static charT month_sep_char()
   {
     return '-';
   }
   //! ISO 8601 char for a day
   static charT day_sep_char()
   {
     return '-';
   }
   //! char for minute
   static charT hour_sep_char()
   {
     return ':';
   }
   //! char for minute
   static charT minute_sep_char()
   {
     return ':';
   }
   //! char for second
   static charT second_sep_char()
   {
     return ':';
   }
   //! ISO 8601 char for a period
   static charT period_start_char()
   {
     return 'P';
   }
   //! Used in time in mixed strings to set start of time
   static charT time_start_char()
   {
     return 'T';
   }
 
   //! Used in mixed strings to identify start of a week number
   static charT week_start_char()
   {
     return 'W';
   }
 
   //! Separators for periods
   static charT period_sep_char()
   {
     return '/';
   }
   //! Separator for hh:mm:ss
   static charT time_sep_char()
   {
     return ':';
   }
   //! Preferred Separator for hh:mm:ss,decimal_fraction
   static charT fractional_time_sep_char()
   {
     return ',';
   }
 
   static bool is_component_sep(charT sep)
   {
     switch(sep) {
     case 'H':
     case 'M':
     case 'S':
     case 'W':
     case 'T':
     case 'Y':
     case 'D':return true;
     default:
       return false;
     }
   }
 
   static bool is_fractional_time_sep(charT sep)
   {
     switch(sep) {
     case ',':
     case '.': return true;
     default: return false;
     }
   }
   static bool is_timezone_sep(charT sep)
   {
     switch(sep) {
     case '+':
     case '-': return true;
     default: return false;
     }
   }
   static charT element_sep_char()
   {
     return '-';
   }
 
 };
 
 #ifndef BOOST_NO_STD_WSTRING
 
 //! Class to provide common ISO 8601 formatting spec
 template<>
 class iso_format_base<wchar_t> {
 public:
   //! Describe month format -- its an integer in ISO 8601 format
   static month_format_spec month_format()
   {
     return month_as_integer;
   }
 
   //! String used printed is date is invalid
   static const wchar_t* not_a_date()
   {      
     return L"not-a-date-time";
   }
   //! String used to for positive infinity value
   static const wchar_t* pos_infinity()
   {
     return L"+infinity";
   }
   //! String used to for positive infinity value
   static const wchar_t* neg_infinity()
   {
     return L"-infinity";
   }
 
   //! ISO 8601 char for a year -- used in durations
   static wchar_t year_sep_char()
   {
     return 'Y';
   }
   //! ISO 8601 char for a month
   static wchar_t month_sep_char()
   {
     return '-';
   }
   //! ISO 8601 char for a day
   static wchar_t day_sep_char()
   {
     return '-';
   }
   //! char for minute
   static wchar_t hour_sep_char()
   {
     return ':';
   }
   //! char for minute
   static wchar_t minute_sep_char()
   {
     return ':';
   }
   //! char for second
   static wchar_t second_sep_char()
   {
     return ':';
   }
   //! ISO 8601 char for a period
   static wchar_t period_start_char()
   {
     return 'P';
   }
   //! Used in time in mixed strings to set start of time
   static wchar_t time_start_char()
   {
     return 'T';
   }
 
   //! Used in mixed strings to identify start of a week number
   static wchar_t week_start_char()
   {
     return 'W';
   }
 
   //! Separators for periods
   static wchar_t period_sep_char()
   {
     return '/';
   }
   //! Separator for hh:mm:ss
   static wchar_t time_sep_char()
   {
     return ':';
   }
   //! Preferred Separator for hh:mm:ss,decimal_fraction
   static wchar_t fractional_time_sep_char()
   {
     return ',';
   }
 
   static bool is_component_sep(wchar_t sep)
   {
     switch(sep) {
     case 'H':
     case 'M':
     case 'S':
     case 'W':
     case 'T':
     case 'Y':
     case 'D':return true;
     default:
       return false;
     }
   }
 
   static bool is_fractional_time_sep(wchar_t sep)
   {
     switch(sep) {
     case ',':
     case '.': return true;
     default: return false;
     }
   }
   static bool is_timezone_sep(wchar_t sep)
   {
     switch(sep) {
     case '+':
     case '-': return true;
     default: return false;
     }
   }
   static wchar_t element_sep_char()
   {
     return '-';
   }
 
 };
 
 #endif // BOOST_NO_STD_WSTRING
 
 //! Format description for ISO 8601 normal YYYYMMDD
 template<class charT>
 class iso_format : public iso_format_base<charT> {
 public:
   //! The ios standard format doesn't use char separators
   static bool has_date_sep_chars()
   {
     return false;
   }
 };
 
 //! Extended format uses seperators YYYY-MM-DD
 template<class charT>
 class iso_extended_format : public iso_format_base<charT> {
 public:
   //! Extended format needs char separators
   static bool has_date_sep_chars()
   {
     return true;
   }
 
 };
 
 } } //namespace date_time
 
 
 
 
 #endif

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