Chris@16: //  (C) Copyright Howard Hinnant
Chris@16: //  (C) Copyright 2011 Vicente J. Botet Escriba
Chris@16: //  Use, modification and distribution are subject to the Boost Software License,
Chris@16: //  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: //  http://www.boost.org/LICENSE_1_0.txt).
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_CHRONO_IO_DURATION_UNITS_HPP
Chris@16: #define BOOST_CHRONO_IO_DURATION_UNITS_HPP
Chris@16: 
Chris@16: #include <boost/chrono/config.hpp>
Chris@16: #include <boost/ratio/ratio_io.hpp>
Chris@16: #include <boost/chrono/duration.hpp>
Chris@16: #include <boost/chrono/io/duration_style.hpp>
Chris@16: #include <boost/chrono/io/ios_base_state.hpp>
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <string>
Chris@16: #include <ios>
Chris@16: #include <locale>
Chris@16: #include <algorithm>
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16:   namespace chrono
Chris@16:   {
Chris@16:     class rt_ratio
Chris@16:     {
Chris@16:     public:
Chris@16:       template <typename Period>
Chris@16:       rt_ratio(Period const&) :
Chris@16:         num(Period::type::num), den(Period::type::den)
Chris@16:       {
Chris@16:       }
Chris@16: 
Chris@16:       rt_ratio(intmax_t n = 0, intmax_t d = 0) :
Chris@16:         num(n), den(d)
Chris@16:       {
Chris@16:       }
Chris@16: 
Chris@16:       intmax_t num;
Chris@16:       intmax_t den;
Chris@16:     };
Chris@16: 
Chris@16:     /**
Chris@16:      * @c duration_units facet gives useful information about the duration units,
Chris@16:      * as the number of plural forms, the plural form associated to a duration,
Chris@16:      * the text associated to a plural form and a duration's period,
Chris@16:      */
Chris@16:     template <typename CharT = char>
Chris@16:     class duration_units: public std::locale::facet
Chris@16:     {
Chris@16:     public:
Chris@16:       /**
Chris@16:        * Type of character the facet is instantiated on.
Chris@16:        */
Chris@16:       typedef CharT char_type;
Chris@16:       /**
Chris@16:        * Type of character string passed to member functions.
Chris@16:        */
Chris@16:       typedef std::basic_string<CharT> string_type;
Chris@16: 
Chris@16:       /**
Chris@16:        * Unique identifier for this type of facet.
Chris@16:        */
Chris@16:       static std::locale::id id;
Chris@16: 
Chris@16:       /**
Chris@16:        * Construct a @c duration_units facet.
Chris@16:        * @param refs
Chris@16:        * @Effects Construct a @c duration_units facet.
Chris@16:        * If the @c refs argument is @c 0 then destruction of the object is
Chris@16:        * delegated to the @c locale, or locales, containing it. This allows
Chris@16:        * the user to ignore lifetime management issues. On the other had,
Chris@16:        * if @c refs is @c 1 then the object must be explicitly deleted;
Chris@16:        * the @c locale will not do so. In this case, the object can be
Chris@16:        * maintained across the lifetime of multiple locales.
Chris@16:        */
Chris@16:       explicit duration_units(size_t refs = 0) :
Chris@16:         std::locale::facet(refs)
Chris@16:       {
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @return pointer to the start of valid [N/D] units.
Chris@16:        */
Chris@16:       virtual const string_type* get_n_d_valid_units_start() const =0;
Chris@16:       /**
Chris@16:        * @effect calls the do_...
Chris@16:        * @return pointer to the end of valid [N/D] units.
Chris@16:        */
Chris@16:       virtual const string_type* get_n_d_valid_units_end() const=0;
Chris@16: 
Chris@16:       /**
Chris@16:        * @return pointer to the start of valid units, symbol or prefix with its different plural forms.
Chris@16:        */
Chris@16:       virtual const string_type* get_valid_units_start() const=0;
Chris@16:       /**
Chris@16:        * @return pointer to the end of valid units.
Chris@16:        */
Chris@16:       virtual const string_type* get_valid_units_end() const=0;
Chris@16: 
Chris@16:       /**
Chris@16:        * @param k the found pointer to the [N/D] unit.
Chris@16:        * @return true if @c k matches a valid unit.
Chris@16:        */
Chris@16:       virtual bool match_n_d_valid_unit(const string_type* k) const = 0;
Chris@16:       /**
Chris@16:        * @param k the found pointer to the unit.
Chris@16:        * @Effects @c rt is set to the valid Period when the @c k matches a valid unit.
Chris@16:        * @return true if @c k matches a valid unit.
Chris@16:        */
Chris@16:       virtual bool match_valid_unit(const string_type* k, rt_ratio& rt) const = 0;
Chris@16: 
Chris@16:       /**
Chris@16:        * @effect calls the do_...
Chris@16:        * @return the pattern to be used by default.
Chris@16:        */
Chris@16:       virtual string_type get_pattern() const=0;
Chris@16: 
Chris@16:       /**
Chris@16:        * @effect calls the do_...
Chris@16:        * @return the unit associated to this duration.
Chris@16:        */
Chris@16:       template <typename Rep, typename Period>
Chris@16:       string_type get_unit(duration_style style, duration<Rep, Period> const& d) const
Chris@16:       {
Chris@16:         return do_get_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count()));
Chris@16:       }
Chris@16:       /**
Chris@16:        * @effect calls the do_...
Chris@16:        * @return the [N/D] suffix unit associated to this duration.
Chris@16:        */
Chris@16:       template <typename Rep, typename Period>
Chris@16:       string_type get_n_d_unit(duration_style style, duration<Rep, Period> const& d) const
Chris@16:       {
Chris@16:         return do_get_n_d_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count()));
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @effect calls the do_...
Chris@16:        * @return true if the unit associated to the given Period is named, false otherwise.
Chris@16:        */
Chris@16:       template <typename Period>
Chris@16:       bool is_named_unit() const
Chris@16:       {
Chris@16:         return do_is_named_unit(rt_ratio(Period()));
Chris@16:       }
Chris@16: 
Chris@16: 
Chris@16:     protected:
Chris@16: 
Chris@16:       /**
Chris@16:        * @Effects Destroys the facet
Chris@16:        */
Chris@16:       virtual ~duration_units()
Chris@16:       {
Chris@16:       }
Chris@16:       /**
Chris@16:        * @return the [N/D] suffix unit associated to this duration.
Chris@16:        */
Chris@16:       virtual string_type do_get_n_d_unit(duration_style style, rt_ratio rt, intmax_t v) const = 0;
Chris@16:       /**
Chris@16:        * @return the unit associated to this duration.
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style,rt_ratio rt, intmax_t v) const = 0;
Chris@16:       /**
Chris@16:        * @return true if the unit associated to the given Period is named, false otherwise.
Chris@16:        */
Chris@16:       virtual bool do_is_named_unit(rt_ratio rt) const =0;
Chris@16: 
Chris@16:     };
Chris@16: 
Chris@16:     template <typename CharT>
Chris@16:     std::locale::id duration_units<CharT>::id;
Chris@16: 
Chris@16:     namespace detail
Chris@16:     {
Chris@16:       template<typename CharT>
Chris@16:       struct duration_units_default_holder
Chris@16:       {
Chris@16:         typedef std::basic_string<CharT> string_type;
Chris@16:         static string_type* n_d_valid_units_;
Chris@16:         static string_type* valid_units_;
Chris@16:         static bool initialized_;
Chris@16:       };
Chris@16:       template <typename CharT>
Chris@16:       typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::n_d_valid_units_=0;
Chris@16:       template <typename CharT>
Chris@16:       typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::valid_units_=0;
Chris@16:       template<typename CharT>
Chris@16:       bool duration_units_default_holder<CharT>::initialized_ = false;
Chris@16:     }
Chris@16: 
Chris@16:     /**
Chris@16:      * This class is used to define the strings for the default English
Chris@16:      */
Chris@16:     template <typename CharT = char>
Chris@16:     class duration_units_default: public duration_units<CharT>
Chris@16:     {
Chris@16:     protected:
Chris@16:       static const std::size_t pfs_ = 2;
Chris@16: 
Chris@16:     public:
Chris@16:       /**
Chris@16:        * Type of character the facet is instantiated on.
Chris@16:        */
Chris@16:       typedef CharT char_type;
Chris@16:       /**
Chris@16:        * Type of character string passed to member functions.
Chris@16:        */
Chris@16:       typedef std::basic_string<CharT> string_type;
Chris@16: 
Chris@16:       /**
Chris@16:        * Construct a @c duration_units_default facet.
Chris@16:        * @param refs
Chris@16:        * @Effects Construct a @c duration_units_default facet.
Chris@16:        * If the @c refs argument is @c 0 then destruction of the object is
Chris@16:        * delegated to the @c locale, or locales, containing it. This allows
Chris@16:        * the user to ignore lifetime management issues. On the other had,
Chris@16:        * if @c refs is @c 1 then the object must be explicitly deleted;
Chris@16:        * the @c locale will not do so. In this case, the object can be
Chris@16:        * maintained across the lifetime of multiple locales.
Chris@16:        */
Chris@16:       explicit duration_units_default(size_t refs = 0) :
Chris@16:         duration_units<CharT> (refs)
Chris@16:       {
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * Destroys the facet.
Chris@16:        */
Chris@16:       ~duration_units_default()
Chris@16:       {
Chris@16:       }
Chris@16: 
Chris@16:     public:
Chris@16: 
Chris@16:       /**
Chris@16:        * @param k the found pointer to the [N/D] unit.
Chris@16:        * @return true if @c k matches a valid unit.
Chris@16:        */
Chris@16:       bool match_n_d_valid_unit(const string_type* k) const
Chris@16:       {
Chris@16:         std::size_t index = (k - get_n_d_valid_units_start()) / (pfs_ + 1);
Chris@16:         switch (index)
Chris@16:         {
Chris@16:         case 0:
Chris@16:           break;
Chris@16:         default:
Chris@16:           return false;
Chris@16:         }
Chris@16:         return true;
Chris@16:       }
Chris@16:       /**
Chris@16:        * @param k the found pointer to the unit.
Chris@16:        * @Effects @c rt is set to the valid Period when the @c k matches a valid unit.
Chris@16:        * @return true if @c k matches a valid unit.
Chris@16:        */
Chris@16:       bool match_valid_unit(const string_type* k, rt_ratio& rt) const
Chris@16:       {
Chris@16:         std::size_t index = (k - get_valid_units_start()) / (pfs_ + 1);
Chris@16:         switch (index)
Chris@16:         {
Chris@16:         case 0:
Chris@16:           rt = rt_ratio(atto());
Chris@16:           break;
Chris@16:         case 1:
Chris@16:           rt = rt_ratio(femto());
Chris@16:           break;
Chris@16:         case 2:
Chris@16:           rt = rt_ratio(pico());
Chris@16:           break;
Chris@16:         case 3:
Chris@16:           rt = rt_ratio(nano());
Chris@16:           break;
Chris@16:         case 4:
Chris@16:           rt = rt_ratio(micro());
Chris@16:           break;
Chris@16:         case 5:
Chris@16:           rt = rt_ratio(milli());
Chris@16:           break;
Chris@16:         case 6:
Chris@16:           rt = rt_ratio(centi());
Chris@16:           break;
Chris@16:         case 7:
Chris@16:           rt = rt_ratio(deci());
Chris@16:           break;
Chris@16:         case 8:
Chris@16:           rt = rt_ratio(deca());
Chris@16:           break;
Chris@16:         case 9:
Chris@16:           rt = rt_ratio(hecto());
Chris@16:           break;
Chris@16:         case 10:
Chris@16:           rt = rt_ratio(kilo());
Chris@16:           break;
Chris@16:         case 11:
Chris@16:           rt = rt_ratio(mega());
Chris@16:           break;
Chris@16:         case 12:
Chris@16:           rt = rt_ratio(giga());
Chris@16:           break;
Chris@16:         case 13:
Chris@16:           rt = rt_ratio(tera());
Chris@16:           break;
Chris@16:         case 14:
Chris@16:           rt = rt_ratio(peta());
Chris@16:           break;
Chris@16:         case 15:
Chris@16:           rt = rt_ratio(exa());
Chris@16:           break;
Chris@16:         case 16:
Chris@16:           rt = rt_ratio(ratio<1> ());
Chris@16:           break;
Chris@16:         case 17:
Chris@16:           rt = rt_ratio(ratio<60> ());
Chris@16:           break;
Chris@16:         case 18:
Chris@16:           rt = rt_ratio(ratio<3600> ());
Chris@16:           break;
Chris@16:         default:
Chris@16:           return false;
Chris@16:         }
Chris@16:         return true;
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @return pointer to the start of valid [N/D] units.
Chris@16:        */
Chris@16:       virtual const string_type* get_n_d_valid_units_start()const
Chris@16:       {
Chris@16:         return  detail::duration_units_default_holder<CharT>::n_d_valid_units_;
Chris@16:       }
Chris@16:       /**
Chris@16:        * @return pointer to the end of valid [N/D] units.
Chris@16:        */
Chris@16:       virtual const string_type* get_n_d_valid_units_end()const
Chris@16:       {
Chris@16:         return detail::duration_units_default_holder<CharT>::n_d_valid_units_ + (pfs_ + 1);
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @return pointer to the start of valid units.
Chris@16:        */
Chris@16:       virtual const string_type* get_valid_units_start() const
Chris@16:       {
Chris@16:         return detail::duration_units_default_holder<CharT>::valid_units_;
Chris@16:       }
Chris@16:       /**
Chris@16:        * @return pointer to the end of valid units.
Chris@16:        */
Chris@16:       virtual const string_type* get_valid_units_end() const
Chris@16:       {
Chris@16:         return detail::duration_units_default_holder<CharT>::valid_units_ + 19 * (pfs_ + 1);
Chris@16:       }
Chris@16: 
Chris@16:       string_type get_pattern() const
Chris@16:       {
Chris@16:         static const CharT t[] =
Chris@16:         { '%', 'v', ' ', '%', 'u' };
Chris@16:         static const string_type pattern(t, t + sizeof (t) / sizeof (t[0]));
Chris@16: 
Chris@16:         return pattern;
Chris@16:       }
Chris@16: 
Chris@16:     protected:
Chris@16:       /**
Chris@16:        *
Chris@16:        * This facet names the units associated to the following periods:
Chris@16:        * atto,femto,pico,nano,micro,milli,centi,deci,ratio<1>,deca,hecto,kilo,mega,giga,tera,peta,exa,ratio<60> and ratio<3600>.
Chris@16:        * @return true if the unit associated to the given Period is named, false otherwise.
Chris@16:        */
Chris@16:       bool do_is_named_unit(rt_ratio rt) const
Chris@16:       {
Chris@16:         if (rt.num==1) {
Chris@16:           switch (rt.den)
Chris@16:           {
Chris@16:           case BOOST_RATIO_INTMAX_C(1):
Chris@16:           case BOOST_RATIO_INTMAX_C(10):
Chris@16:           case BOOST_RATIO_INTMAX_C(100):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000000):
Chris@16:             return true;
Chris@16:           default:
Chris@16:             return false;
Chris@16:           }
Chris@16:         } else if (rt.den==1) {
Chris@16:           switch (rt.num)
Chris@16:           {
Chris@16:           case BOOST_RATIO_INTMAX_C(10):
Chris@16:           case BOOST_RATIO_INTMAX_C(60):
Chris@16:           case BOOST_RATIO_INTMAX_C(100):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000):
Chris@16:           case BOOST_RATIO_INTMAX_C(3600):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000):
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000000):
Chris@16:             return true;
Chris@16:           default:
Chris@16:             return false;
Chris@16:           }
Chris@16:         }
Chris@16:         return false;
Chris@16: 
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * In English the suffix used after [N/D] is the one associated to the period ratio<1>.
Chris@16:        * @return the [N/D] suffix unit associated to this duration.
Chris@16:        */
Chris@16:       string_type do_get_n_d_unit(duration_style style, rt_ratio, intmax_t v) const
Chris@16:       {
Chris@16:         return do_get_unit(style, ratio<1>(), do_get_plural_form(v));
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @return the unit associated to this duration if it is named, "" otherwise.
Chris@16:        */
Chris@16:       string_type do_get_unit(duration_style style, rt_ratio rt, intmax_t v) const
Chris@16:       {
Chris@16:         if (rt.num==1) {
Chris@16:           switch (rt.den)
Chris@16:           {
Chris@16:           case BOOST_RATIO_INTMAX_C(1):
Chris@16:             return do_get_unit(style, ratio<1>(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(10):
Chris@16:             return do_get_unit(style, deci(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(100):
Chris@16:             return do_get_unit(style, centi(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000):
Chris@16:             return do_get_unit(style, milli(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000):
Chris@16:             return do_get_unit(style, micro(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000):
Chris@16:             return do_get_unit(style, nano(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000):
Chris@16:             return do_get_unit(style, pico(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000):
Chris@16:             return do_get_unit(style, femto(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(1000000000000000000):
Chris@16:             return do_get_unit(style, atto(), do_get_plural_form(v));
Chris@16:           default:
Chris@16:             ;
Chris@16:           }
Chris@16:         } else if (rt.den==1) {
Chris@16:           switch (rt.num)
Chris@16:           {
Chris@16:           case BOOST_RATIO_INTMAX_C(10):
Chris@16:              return do_get_unit(style, deca(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(60):
Chris@16:             return do_get_unit(style, ratio<60>(), do_get_plural_form(v));
Chris@16:           case BOOST_RATIO_INTMAX_C(100):
Chris@16:              return do_get_unit(style, hecto(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000):
Chris@16:              return do_get_unit(style, kilo(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(3600):
Chris@16:              return do_get_unit(style, ratio<3600>(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000000):
Chris@16:              return do_get_unit(style, mega(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000000000):
Chris@16:              return do_get_unit(style, giga(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000000000000):
Chris@16:              return do_get_unit(style, tera(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000000000000000):
Chris@16:              return do_get_unit(style, peta(), do_get_plural_form(v));
Chris@16:            case BOOST_RATIO_INTMAX_C(1000000000000000000):
Chris@16:              return do_get_unit(style, exa(), do_get_plural_form(v));
Chris@16:            default:
Chris@16:              ;
Chris@16:            }
Chris@16:         }
Chris@16:         BOOST_ASSERT(false&&"ratio parameter can not be translated");
Chris@16:         //throw "exception";
Chris@16:         return string_type();
Chris@16:       }
Chris@16: 
Chris@16:     protected:
Chris@16:       /**
Chris@16:        * @return the number of associated plural forms this facet manages.
Chris@16:        */
Chris@16:       virtual std::size_t do_get_plural_forms() const
Chris@16:       {
Chris@16:         return static_get_plural_forms();
Chris@16:       }
Chris@16:       static std::size_t static_get_plural_forms()
Chris@16:       {
Chris@16:         return pfs_;
Chris@16:       }
Chris@16:       /**
Chris@16:        * Gets the associated plural form.
Chris@16:        * @param value the duration representation
Chris@16:        * @return the plural form associated to the @c value parameter. In English there are 2 plural forms
Chris@16:        * 0 singular (-1 or 1)
Chris@16:        * 1 plural for all others
Chris@16:        */
Chris@16:       virtual std::size_t do_get_plural_form(int_least64_t value) const
Chris@16:       {
Chris@16:         return static_get_plural_form(value);
Chris@16:       }
Chris@16:       static std::size_t static_get_plural_form(int_least64_t value)
Chris@16:       {
Chris@16:         return (value == -1 || value == 1) ? 0 : 1;
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param period the period associated to the duration seconds.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return if style is symbol returns "s", otherwise if pf is 0 return "second", if pf is 1 "seconds"
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, ratio<1> u, std::size_t pf) const
Chris@16:       {
Chris@16:         return static_get_unit(style,u,pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, ratio<1> , std::size_t pf)
Chris@16:       {
Chris@16:         static const CharT t[] =
Chris@16:         { 's' };
Chris@16:         static const string_type symbol(t, t + sizeof (t) / sizeof (t[0]));
Chris@16:         static const CharT u[] =
Chris@16:         { 's', 'e', 'c', 'o', 'n', 'd' };
Chris@16:         static const string_type singular(u, u + sizeof (u) / sizeof (u[0]));
Chris@16:         static const CharT v[] =
Chris@16:         { 's', 'e', 'c', 'o', 'n', 'd', 's' };
Chris@16:         static const string_type plural(v, v + sizeof (v) / sizeof (v[0]));
Chris@16: 
Chris@16:         if (style == duration_style::symbol)
Chris@16:         {
Chris@16:           return symbol;
Chris@16:         }
Chris@16:         if (pf == 0)
Chris@16:         {
Chris@16:           return singular;
Chris@16:         }
Chris@16:         if (pf == 1)
Chris@16:         {
Chris@16:           return plural;
Chris@16:         }
Chris@16:         BOOST_ASSERT(false&&"style/pf parameters not valid");
Chris@16:         //throw "exception";
Chris@16:         return string_type();
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param period the period associated to the duration minutes.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return if style is symbol returns "min", otherwise if pf is 0 return "minute", if pf is 1 "minutes"
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, ratio<60> u, std::size_t pf) const
Chris@16:       {
Chris@16:         return static_get_unit(style,u,pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, ratio<60> , std::size_t pf)
Chris@16:       {
Chris@16:         static const CharT t[] =
Chris@16:         { 'm', 'i', 'n' };
Chris@16:         static const string_type symbol(t, t + sizeof (t) / sizeof (t[0]));
Chris@16: 
Chris@16:         static const CharT u[] =
Chris@16:         { 'm', 'i', 'n', 'u', 't', 'e' };
Chris@16:         static const string_type singular(u, u + sizeof (u) / sizeof (u[0]));
Chris@16:         static const CharT v[] =
Chris@16:         { 'm', 'i', 'n', 'u', 't', 'e', 's' };
Chris@16:         static const string_type plural(v, v + sizeof (v) / sizeof (v[0]));
Chris@16: 
Chris@16:         if (style == duration_style::symbol) return symbol;
Chris@16:         if (pf == 0) return singular;
Chris@16:         if (pf == 1) return plural;
Chris@16:         BOOST_ASSERT(false&&"style/pf parameters not valid");
Chris@16:         //throw "exception";
Chris@16:         return string_type();
Chris@16: 
Chris@16:       }
Chris@16: 
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param period the period associated to the duration hours.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return if style is symbol returns "h", otherwise if pf is 0 return "hour", if pf is 1 "hours"
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, ratio<3600> u, std::size_t pf) const
Chris@16:       {
Chris@16:         return static_get_unit(style,u,pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, ratio<3600> , std::size_t pf)
Chris@16:       {
Chris@16:         static const CharT t[] =
Chris@16:         { 'h' };
Chris@16:         static const string_type symbol(t, t + sizeof (t) / sizeof (t[0]));
Chris@16:         static const CharT u[] =
Chris@16:         { 'h', 'o', 'u', 'r' };
Chris@16:         static const string_type singular(u, u + sizeof (u) / sizeof (u[0]));
Chris@16:         static const CharT v[] =
Chris@16:         { 'h', 'o', 'u', 'r', 's' };
Chris@16:         static const string_type plural(v, v + sizeof (v) / sizeof (v[0]));
Chris@16: 
Chris@16:         if (style == duration_style::symbol) return symbol;
Chris@16:         if (pf == 0) return singular;
Chris@16:         if (pf == 1) return plural;
Chris@16:         BOOST_ASSERT(false&&"style/pf parameters not valid");
Chris@16:         //throw "exception";
Chris@16:         return string_type();
Chris@16: 
Chris@16:       }
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param u the period tag atto.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return the concatenation of the prefix associated to @c period + the one associated to seconds.
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, atto u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, atto u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param u the period tag femto.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return the concatenation of the prefix associated to period @c u + the one associated to seconds.
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, femto u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, femto u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param u the period tag femto.
Chris@16:        * @param pf the requested plural form.
Chris@16:        * @return the concatenation of the prefix associated to period @c u + the one associated to seconds.
Chris@16:        */
Chris@16:       virtual string_type do_get_unit(duration_style style, pico u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, pico u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, nano u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, nano u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, micro u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, micro u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, milli u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, milli u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, centi u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, centi u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, deci u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, deci u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, deca u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, deca u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, hecto u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, hecto u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, kilo u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, kilo u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, mega u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, mega u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, giga u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, giga u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, tera u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, tera u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, peta u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, peta u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       virtual string_type do_get_unit(duration_style style, exa u, std::size_t pf) const
Chris@16:       {
Chris@16:         return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16:       static string_type static_get_unit(duration_style style, exa u, std::size_t pf)
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf);
Chris@16:       }
Chris@16: 
Chris@16:     protected:
Chris@16: 
Chris@16:       /**
Chris@16:        * @param style the duration style.
Chris@16:        * @param u the period tag atto.
Chris@16:        * @return depending on the value of @c style return the ratio_string symbol or prefix.
Chris@16:        */
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, atto u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, atto)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<atto, CharT>::symbol();
Chris@16:         return ratio_string<atto, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, femto u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, femto)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<femto, CharT>::symbol();
Chris@16:         return ratio_string<femto, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, pico u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, pico)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<pico, CharT>::symbol();
Chris@16:         return ratio_string<pico, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, nano u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, nano)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<nano, CharT>::symbol();
Chris@16:         return ratio_string<nano, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, micro u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, micro)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<micro, CharT>::symbol();
Chris@16:         return ratio_string<micro, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, milli u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, milli)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<milli, CharT>::symbol();
Chris@16:         return ratio_string<milli, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, centi u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, centi)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<centi, CharT>::symbol();
Chris@16:         return ratio_string<centi, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, deci u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, deci)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<deci, CharT>::symbol();
Chris@16:         return ratio_string<deci, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, deca u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, deca)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<deca, CharT>::symbol();
Chris@16:         return ratio_string<deca, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, hecto u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, hecto)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<hecto, CharT>::symbol();
Chris@16:         return ratio_string<hecto, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, kilo u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, kilo)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<kilo, CharT>::symbol();
Chris@16:         return ratio_string<kilo, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, mega u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, mega)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<mega, CharT>::symbol();
Chris@16:         return ratio_string<mega, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, giga u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, giga)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<giga, CharT>::symbol();
Chris@16:         return ratio_string<giga, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, tera u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, tera)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<tera, CharT>::symbol();
Chris@16:         return ratio_string<tera, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, peta u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, peta)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<peta, CharT>::symbol();
Chris@16:         return ratio_string<peta, CharT>::prefix();
Chris@16:       }
Chris@16:       virtual string_type do_get_ratio_prefix(duration_style style, exa u) const
Chris@16:       {
Chris@16:         return static_get_ratio_prefix(style, u);
Chris@16:       }
Chris@16:       static string_type static_get_ratio_prefix(duration_style style, exa)
Chris@16:       {
Chris@16:         if (style == duration_style::symbol) return ratio_string<exa, CharT>::symbol();
Chris@16:         return ratio_string<exa, CharT>::prefix();
Chris@16:       }
Chris@16: 
Chris@16:     protected:
Chris@16:       template <typename Period>
Chris@16:       string_type* fill_units(string_type* it, Period) const
Chris@16:       {
Chris@16:         std::size_t pfs = do_get_plural_forms();
Chris@16:         for (std::size_t pf = 0; pf < pfs; ++pf)
Chris@16:         {
Chris@16:           *it++ = do_get_unit(duration_style::prefix, Period(), pf);
Chris@16:         }
Chris@16:         *it++ = do_get_unit(duration_style::symbol, Period(), 0);
Chris@16:         return it;
Chris@16:       }
Chris@16:     public:
Chris@16:       template <typename Period>
Chris@16:       static string_type* static_fill_units(string_type* it, Period)
Chris@16:       {
Chris@16:         std::size_t pfs = static_get_plural_forms();
Chris@16:         for (std::size_t pf = 0; pf < pfs; ++pf)
Chris@16:         {
Chris@16:           *it++ = static_get_unit(duration_style::prefix, Period(), pf);
Chris@16:         }
Chris@16:         *it++ = static_get_unit(duration_style::symbol, Period(), 0);
Chris@16:         return it;
Chris@16:       }
Chris@16:       static string_type* static_init_valid_units(string_type* it)
Chris@16:       {
Chris@16:         it = static_fill_units(it, atto());
Chris@16:         it = static_fill_units(it, femto());
Chris@16:         it = static_fill_units(it, pico());
Chris@16:         it = static_fill_units(it, nano());
Chris@16:         it = static_fill_units(it, micro());
Chris@16:         it = static_fill_units(it, milli());
Chris@16:         it = static_fill_units(it, centi());
Chris@16:         it = static_fill_units(it, deci());
Chris@16:         it = static_fill_units(it, deca());
Chris@16:         it = static_fill_units(it, hecto());
Chris@16:         it = static_fill_units(it, kilo());
Chris@16:         it = static_fill_units(it, mega());
Chris@16:         it = static_fill_units(it, giga());
Chris@16:         it = static_fill_units(it, tera());
Chris@16:         it = static_fill_units(it, peta());
Chris@16:         it = static_fill_units(it, exa());
Chris@16:         it = static_fill_units(it, ratio<1> ());
Chris@16:         it = static_fill_units(it, ratio<60> ());
Chris@16:         it = static_fill_units(it, ratio<3600> ());
Chris@16:         return it;
Chris@16:       }
Chris@16:     };
Chris@16: 
Chris@16:     namespace detail
Chris@16:     {
Chris@16: 
Chris@16:       template<typename CharT>
Chris@16:       struct duration_units_default_initializer_t
Chris@16:       {
Chris@16:         duration_units_default_initializer_t()
Chris@16:           {
Chris@16:               if (!duration_units_default_holder<CharT>::initialized_)
Chris@16:               {
Chris@16:                 typedef typename duration_units_default_holder<CharT>::string_type string_type;
Chris@16:                 duration_units_default_holder<CharT>::n_d_valid_units_ = new string_type[3];
Chris@16:                 duration_units_default_holder<CharT>::valid_units_ = new string_type[19 * 3];
Chris@16: 
Chris@16:                 string_type* it = duration_units_default_holder<CharT>::n_d_valid_units_;
Chris@16:                 it = duration_units_default<CharT>::static_fill_units(it, ratio<1> ());
Chris@16:                 it = duration_units_default<CharT>::static_init_valid_units(duration_units_default_holder<CharT>::valid_units_);
Chris@16: 
Chris@16:                 duration_units_default_holder<CharT>::initialized_ = true;
Chris@16:               }
Chris@16:           }
Chris@16:         ~duration_units_default_initializer_t()
Chris@16:           {
Chris@16:             if (duration_units_default_holder<CharT>::initialized_)
Chris@16:             {
Chris@16:               delete[] duration_units_default_holder<CharT>::n_d_valid_units_;
Chris@16:               duration_units_default_holder<CharT>::n_d_valid_units_ = 0;
Chris@16:               delete[] duration_units_default_holder<CharT>::valid_units_;
Chris@16:               duration_units_default_holder<CharT>::valid_units_ = 0;
Chris@16:               duration_units_default_holder<CharT>::initialized_ = false;
Chris@16:             }
Chris@16:         }
Chris@16:       };
Chris@16:       namespace /**/
Chris@16:       {
Chris@16:         duration_units_default_initializer_t<char> duration_units_default_initializer;
Chris@16:         duration_units_default_initializer_t<wchar_t> wduration_units_default_initializer;
Chris@16:       } // namespace
Chris@16:     }
Chris@16:   } // chrono
Chris@16: 
Chris@16: } // boost
Chris@16: 
Chris@16: #endif  // header