comparison DEPENDENCIES/generic/include/boost/date_time/time_facet.hpp @ 16:2665513ce2d3

Add boost headers

+
+#ifndef _DATE_TIME_FACET__HPP__
+#define _DATE_TIME_FACET__HPP__
+
+/* Copyright (c) 2004-2005 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:  Martin Andrian, Jeff Garland, Bart Garst
+ * $Date: 2013-10-15 08:22:02 -0700 (Tue, 15 Oct 2013) $
+ */
+
+#include <cctype>
+#include <locale>
+#include <limits>
+#include <string>
+#include <sstream>
+#include <iomanip>
+#include <iterator> // i/ostreambuf_iterator
+#include <exception>
+#include <boost/assert.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/range/as_literal.hpp>
+#include <boost/algorithm/string/erase.hpp>
+#include <boost/algorithm/string/replace.hpp>
+#include <boost/date_time/compiler_config.hpp>
+#include <boost/date_time/date_facet.hpp>
+#include <boost/date_time/string_convert.hpp>
+#include <boost/date_time/special_defs.hpp>
+#include <boost/date_time/time_resolution_traits.hpp> // absolute_value
+
+namespace boost {
+namespace date_time {
+
+  template <class CharT>
+  struct time_formats {
+    public:
+      typedef CharT char_type;
+      static const char_type fractional_seconds_format[3];               // f
+      static const char_type fractional_seconds_or_none_format[3];       // F
+      static const char_type seconds_with_fractional_seconds_format[3];  // s
+      static const char_type seconds_format[3];                          // S
+      static const char_type hours_format[3];                            // H
+      static const char_type unrestricted_hours_format[3];               // O
+      static const char_type full_24_hour_time_format[3];                // T
+      static const char_type full_24_hour_time_expanded_format[9];       // HH:MM:SS
+      static const char_type short_24_hour_time_format[3];               // R
+      static const char_type short_24_hour_time_expanded_format[6];      // HH:MM
+      static const char_type standard_format[9];                         // x X
+      static const char_type zone_abbrev_format[3];                      // z
+      static const char_type zone_name_format[3];                        // Z
+      static const char_type zone_iso_format[3];                         // q
+      static const char_type zone_iso_extended_format[3];                // Q
+      static const char_type posix_zone_string_format[4];                // ZP
+      static const char_type duration_sign_negative_only[3];             // -
+      static const char_type duration_sign_always[3];                    // +
+      static const char_type duration_seperator[2];
+      static const char_type negative_sign[2];                           //-
+      static const char_type positive_sign[2];                           //+
+      static const char_type iso_time_format_specifier[18];
+      static const char_type iso_time_format_extended_specifier[22];
+      //default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
+      static const char_type default_time_format[23];
+      // default_time_input_format uses a posix_time_zone_string instead of a time zone abbrev
+      static const char_type default_time_input_format[24];
+      //default time_duration format is HH:MM:SS[.fff...]
+      static const char_type default_time_duration_format[11];
+  };
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::fractional_seconds_format[3] = {'%','f'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::fractional_seconds_or_none_format[3] = {'%','F'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::seconds_with_fractional_seconds_format[3] = {'%','s'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::seconds_format[3] =  {'%','S'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::hours_format[3] =  {'%','H'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::unrestricted_hours_format[3] =  {'%','O'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::full_24_hour_time_format[3] =  {'%','T'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::full_24_hour_time_expanded_format[9] =
+  {'%','H',':','%','M',':','%','S'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::short_24_hour_time_format[3] =  {'%','R'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::short_24_hour_time_expanded_format[6] =
+  {'%','H',':','%','M'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  //time_formats<CharT>::standard_format[5] =  {'%','c',' ','%','z'};
+  time_formats<CharT>::standard_format[9] =  {'%','x',' ','%','X',' ','%','z'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::zone_abbrev_format[3] =  {'%','z'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::zone_name_format[3] =  {'%','Z'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::zone_iso_format[3] =  {'%','q'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::zone_iso_extended_format[3] ={'%','Q'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::posix_zone_string_format[4] ={'%','Z','P'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::duration_seperator[2] =  {':'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::negative_sign[2] =  {'-'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::positive_sign[2] =  {'+'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::duration_sign_negative_only[3] ={'%','-'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::duration_sign_always[3] ={'%','+'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::iso_time_format_specifier[18] =
+    {'%', 'Y', '%', 'm', '%', 'd', 'T',
+     '%', 'H', '%', 'M', '%', 'S', '%', 'F', '%','q' };
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::iso_time_format_extended_specifier[22] =
+    {'%', 'Y', '-', '%', 'm', '-', '%', 'd', ' ',
+     '%', 'H', ':', '%', 'M', ':', '%', 'S', '%', 'F','%','Q'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::default_time_format[23] =
+    {'%','Y','-','%','b','-','%','d',' ',
+      '%','H',':','%','M',':','%','S','%','F',' ','%','z'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::default_time_input_format[24] =
+    {'%','Y','-','%','b','-','%','d',' ',
+      '%','H',':','%','M',':','%','S','%','F',' ','%','Z','P'};
+
+  template <class CharT>
+  const typename time_formats<CharT>::char_type
+  time_formats<CharT>::default_time_duration_format[11] =
+    {'%','O',':','%','M',':','%','S','%','F'};
+
+
+
+  /*! Facet used for format-based output of time types
+   * This class provides for the use of format strings to output times.  In addition
+   * to the flags for formatting date elements, the following are the allowed format flags:
+   *  - %x %X => default format - enables addition of more flags to default (ie. "%x %X %z")
+   *  - %f => fractional seconds ".123456"
+   *  - %F => fractional seconds or none: like frac sec but empty if frac sec == 0
+   *  - %s => seconds w/ fractional sec "02.123" (this is the same as "%S%f)
+   *  - %S => seconds "02"
+   *  - %z => abbreviated time zone "EDT"
+   *  - %Z => full time zone name "Eastern Daylight Time"
+   */
+  template <class time_type,
+            class CharT,
+            class OutItrT = std::ostreambuf_iterator<CharT, std::char_traits<CharT> > >
+  class time_facet :
+    public boost::date_time::date_facet<typename time_type::date_type , CharT, OutItrT> {
+    typedef time_formats< CharT > formats_type;
+   public:
+    typedef typename time_type::date_type date_type;
+    typedef typename time_type::time_duration_type time_duration_type;
+    typedef boost::date_time::period<time_type,time_duration_type> period_type;
+    typedef boost::date_time::date_facet<typename time_type::date_type, CharT, OutItrT> base_type;
+    typedef typename base_type::string_type string_type;
+    typedef typename base_type::char_type   char_type;
+    typedef typename base_type::period_formatter_type period_formatter_type;
+    typedef typename base_type::special_values_formatter_type special_values_formatter_type;
+    typedef typename base_type::date_gen_formatter_type date_gen_formatter_type;
+    static const char_type* fractional_seconds_format;                // %f
+    static const char_type* fractional_seconds_or_none_format;        // %F
+    static const char_type* seconds_with_fractional_seconds_format;   // %s
+    static const char_type* seconds_format;                           // %S
+    static const char_type* hours_format;                             // %H
+    static const char_type* unrestricted_hours_format;                // %O
+    static const char_type* standard_format;                          // %x X
+    static const char_type* zone_abbrev_format;                       // %z
+    static const char_type* zone_name_format;                         // %Z
+    static const char_type* zone_iso_format;                          // %q
+    static const char_type* zone_iso_extended_format;                 // %Q
+    static const char_type* posix_zone_string_format;                 // %ZP
+    static const char_type* duration_seperator;
+    static const char_type* duration_sign_always;                     // %+
+    static const char_type* duration_sign_negative_only;              // %-
+    static const char_type* negative_sign;                            //-
+    static const char_type* positive_sign;                            //+
+    static const char_type* iso_time_format_specifier;
+    static const char_type* iso_time_format_extended_specifier;
+
+    //default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
+    static const char_type* default_time_format;
+    //default time_duration format is HH:MM:SS[.fff...]
+    static const char_type* default_time_duration_format;
+    static std::locale::id id;
+
+#if defined (__SUNPRO_CC) && defined (_RWSTD_VER)
+      std::locale::id& __get_id (void) const { return id; }
+#endif
+
+    //! sets default formats for ptime, local_date_time, and time_duration
+    explicit time_facet(::size_t ref_arg = 0)
+      : base_type(default_time_format, period_formatter_type(), special_values_formatter_type(), date_gen_formatter_type(), ref_arg),
+        m_time_duration_format(string_type(duration_sign_negative_only) + default_time_duration_format)
+    {}
+
+    //! Construct the facet with an explicitly specified format
+    explicit time_facet(const char_type* format_arg,
+                        period_formatter_type period_formatter_arg = period_formatter_type(),
+                        const special_values_formatter_type& special_value_formatter = special_values_formatter_type(),
+                        date_gen_formatter_type dg_formatter = date_gen_formatter_type(),
+                         ::size_t ref_arg = 0)
+      : base_type(format_arg,
+                  period_formatter_arg,
+                  special_value_formatter,
+                  dg_formatter,
+                  ref_arg),
+        m_time_duration_format(string_type(duration_sign_negative_only) + default_time_duration_format)
+    {}
+
+    //! Changes format for time_duration
+    void time_duration_format(const char_type* const format)
+    {
+      m_time_duration_format = format;
+    }
+
+    virtual void set_iso_format()
+    {
+      this->m_format = iso_time_format_specifier;
+    }
+    virtual void set_iso_extended_format()
+    {
+      this->m_format = iso_time_format_extended_specifier;
+    }
+
+    OutItrT put(OutItrT next_arg,
+                std::ios_base& ios_arg,
+                char_type fill_arg,
+                const time_type& time_arg) const
+    {
+      if (time_arg.is_special()) {
+        return this->do_put_special(next_arg, ios_arg, fill_arg,
+                              time_arg.date().as_special());
+      }
+      string_type local_format(this->m_format);
+
+      // %T and %R have to be replaced here since they are not standard
+      boost::algorithm::replace_all(local_format,
+        boost::as_literal(formats_type::full_24_hour_time_format),
+        boost::as_literal(formats_type::full_24_hour_time_expanded_format));
+      boost::algorithm::replace_all(local_format,
+        boost::as_literal(formats_type::short_24_hour_time_format),
+        boost::as_literal(formats_type::short_24_hour_time_expanded_format));
+
+      string_type frac_str;
+      if (local_format.find(seconds_with_fractional_seconds_format) != string_type::npos) {
+        // replace %s with %S.nnn
+        frac_str =
+          fractional_seconds_as_string(time_arg.time_of_day(), false);
+        char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
+
+        string_type replace_string(seconds_format);
+        replace_string += sep;
+        replace_string += frac_str;
+        boost::algorithm::replace_all(local_format,
+                                      seconds_with_fractional_seconds_format,
+                                      replace_string);
+      }
+      /* NOTE: replacing posix_zone_string_format must be done BEFORE
+       * zone_name_format: "%ZP" & "%Z", if Z is checked first it will
+       * incorrectly replace a zone_name where a posix_string should go */
+      if (local_format.find(posix_zone_string_format) != string_type::npos) {
+        if(time_arg.zone_abbrev().empty()) {
+          // if zone_abbrev() returns an empty string, we want to
+          // erase posix_zone_string_format from format
+          boost::algorithm::erase_all(local_format, posix_zone_string_format);
+        }
+        else{
+          boost::algorithm::replace_all(local_format,
+                                        posix_zone_string_format,
+                                        time_arg.zone_as_posix_string());
+        }
+      }
+      if (local_format.find(zone_name_format) != string_type::npos) {
+        if(time_arg.zone_name().empty()) {
+          /* TODO: this'll probably create problems if a user places
+           * the zone_*_format flag in the format with a ptime. This
+           * code removes the flag from the default formats */
+
+          // if zone_name() returns an empty string, we want to
+          // erase zone_name_format & one preceeding space
+          std::basic_ostringstream<char_type> ss;
+          ss << ' ' << zone_name_format;
+          boost::algorithm::erase_all(local_format, ss.str());
+        }
+        else{
+          boost::algorithm::replace_all(local_format,
+                                        zone_name_format,
+                                        time_arg.zone_name());
+        }
+      }
+      if (local_format.find(zone_abbrev_format) != string_type::npos) {
+        if(time_arg.zone_abbrev(false).empty()) {
+          /* TODO: this'll probably create problems if a user places
+           * the zone_*_format flag in the format with a ptime. This
+           * code removes the flag from the default formats */
+
+          // if zone_abbrev() returns an empty string, we want to
+          // erase zone_abbrev_format & one preceeding space
+          std::basic_ostringstream<char_type> ss;
+          ss << ' ' << zone_abbrev_format;
+          boost::algorithm::erase_all(local_format, ss.str());
+        }
+        else{
+          boost::algorithm::replace_all(local_format,
+                                        zone_abbrev_format,
+                                        time_arg.zone_abbrev(false));
+        }
+      }
+      if (local_format.find(zone_iso_extended_format) != string_type::npos) {
+        if(time_arg.zone_name(true).empty()) {
+          /* TODO: this'll probably create problems if a user places
+           * the zone_*_format flag in the format with a ptime. This
+           * code removes the flag from the default formats */
+
+          // if zone_name() returns an empty string, we want to
+          // erase zone_iso_extended_format from format
+          boost::algorithm::erase_all(local_format, zone_iso_extended_format);
+        }
+        else{
+          boost::algorithm::replace_all(local_format,
+                                        zone_iso_extended_format,
+                                        time_arg.zone_name(true));
+        }
+      }
+
+      if (local_format.find(zone_iso_format) != string_type::npos) {
+        if(time_arg.zone_abbrev(true).empty()) {
+          /* TODO: this'll probably create problems if a user places
+           * the zone_*_format flag in the format with a ptime. This
+           * code removes the flag from the default formats */
+
+          // if zone_abbrev() returns an empty string, we want to
+          // erase zone_iso_format from format
+          boost::algorithm::erase_all(local_format, zone_iso_format);
+        }
+        else{
+          boost::algorithm::replace_all(local_format,
+                                        zone_iso_format,
+                                        time_arg.zone_abbrev(true));
+        }
+      }
+      if (local_format.find(fractional_seconds_format) != string_type::npos) {
+        // replace %f with nnnnnnn
+        if (frac_str.empty()) {
+          frac_str = fractional_seconds_as_string(time_arg.time_of_day(), false);
+        }
+        boost::algorithm::replace_all(local_format,
+                                      fractional_seconds_format,
+                                      frac_str);
+      }
+
+      if (local_format.find(fractional_seconds_or_none_format) != string_type::npos) {
+        // replace %F with nnnnnnn or nothing if fs == 0
+        frac_str =
+          fractional_seconds_as_string(time_arg.time_of_day(), true);
+        if (frac_str.size()) {
+          char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
+          string_type replace_string;
+          replace_string += sep;
+          replace_string += frac_str;
+          boost::algorithm::replace_all(local_format,
+                                        fractional_seconds_or_none_format,
+                                        replace_string);
+        }
+        else {
+          boost::algorithm::erase_all(local_format,
+                                      fractional_seconds_or_none_format);
+        }
+      }
+
+      return this->do_put_tm(next_arg, ios_arg, fill_arg,
+                       to_tm(time_arg), local_format);
+    }
+
+    //! put function for time_duration
+    OutItrT put(OutItrT next_arg,
+                std::ios_base& ios_arg,
+                char_type fill_arg,
+                const time_duration_type& time_dur_arg) const
+    {
+      if (time_dur_arg.is_special()) {
+        return this->do_put_special(next_arg, ios_arg, fill_arg,
+                              time_dur_arg.get_rep().as_special());
+      }
+
+      string_type format(m_time_duration_format);
+      if (time_dur_arg.is_negative()) {
+        // replace %- with minus sign.  Should we use the numpunct facet?
+        boost::algorithm::replace_all(format,
+                                      duration_sign_negative_only,
+                                      negative_sign);
+          // remove all the %+ in the string with '-'
+        boost::algorithm::replace_all(format,
+                                      duration_sign_always,
+                                      negative_sign);
+      }
+      else { //duration is positive
+        // remove all the %- combos from the string
+        boost::algorithm::erase_all(format, duration_sign_negative_only);
+        // remove all the %+ in the string with '+'
+        boost::algorithm::replace_all(format,
+                                      duration_sign_always,
+                                      positive_sign);
+      }
+
+      // %T and %R have to be replaced here since they are not standard
+      boost::algorithm::replace_all(format,
+        boost::as_literal(formats_type::full_24_hour_time_format),
+        boost::as_literal(formats_type::full_24_hour_time_expanded_format));
+      boost::algorithm::replace_all(format,
+        boost::as_literal(formats_type::short_24_hour_time_format),
+        boost::as_literal(formats_type::short_24_hour_time_expanded_format));
+
+      /*
+       * It is possible for a time duration to span more then 24 hours.
+       * Standard time_put::put is obliged to behave the same as strftime
+       * (See ISO 14882-2003 22.2.5.3.1 par. 1) and strftime's behavior is
+       * unspecified for the case when tm_hour field is outside 0-23 range
+       * (See ISO 9899-1999 7.23.3.5 par. 3). So we must output %H and %O
+       * here ourself.
+       */
+      string_type hours_str;
+      if (format.find(unrestricted_hours_format) != string_type::npos) {
+        hours_str = hours_as_string(time_dur_arg);
+        boost::algorithm::replace_all(format, unrestricted_hours_format, hours_str);
+      }
+      // We still have to process restricted hours format specifier. In order to
+      // support parseability of durations in ISO format (%H%M%S), we'll have to
+      // restrict the stringified hours length to 2 characters.
+      if (format.find(hours_format) != string_type::npos) {
+        if (hours_str.empty())
+          hours_str = hours_as_string(time_dur_arg);
+        BOOST_ASSERT(hours_str.length() <= 2);
+        boost::algorithm::replace_all(format, hours_format, hours_str);
+      }
+
+      string_type frac_str;
+      if (format.find(seconds_with_fractional_seconds_format) != string_type::npos) {
+        // replace %s with %S.nnn
+        frac_str =
+          fractional_seconds_as_string(time_dur_arg, false);
+        char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
+
+        string_type replace_string(seconds_format);
+        replace_string += sep;
+        replace_string += frac_str;
+        boost::algorithm::replace_all(format,
+                                      seconds_with_fractional_seconds_format,
+                                      replace_string);
+      }
+      if (format.find(fractional_seconds_format) != string_type::npos) {
+        // replace %f with nnnnnnn
+        if (!frac_str.size()) {
+          frac_str = fractional_seconds_as_string(time_dur_arg, false);
+        }
+        boost::algorithm::replace_all(format,
+                                      fractional_seconds_format,
+                                      frac_str);
+      }
+
+      if (format.find(fractional_seconds_or_none_format) != string_type::npos) {
+        // replace %F with nnnnnnn or nothing if fs == 0
+        frac_str =
+          fractional_seconds_as_string(time_dur_arg, true);
+        if (frac_str.size()) {
+          char_type sep = std::use_facet<std::numpunct<char_type> >(ios_arg.getloc()).decimal_point();
+          string_type replace_string;
+          replace_string += sep;
+          replace_string += frac_str;
+          boost::algorithm::replace_all(format,
+                                        fractional_seconds_or_none_format,
+                                        replace_string);
+        }
+        else {
+          boost::algorithm::erase_all(format,
+                                      fractional_seconds_or_none_format);
+        }
+      }
+
+      return this->do_put_tm(next_arg, ios_arg, fill_arg,
+                       to_tm(time_dur_arg), format);
+    }
+
+    OutItrT put(OutItrT next, std::ios_base& ios_arg,
+                char_type fill, const period_type& p) const
+    {
+      return this->m_period_formatter.put_period(next, ios_arg, fill,p,*this);
+    }
+
+
+  protected:
+
+    static
+    string_type
+    fractional_seconds_as_string(const time_duration_type& time_arg,
+                                 bool null_when_zero)
+    {
+      typename time_duration_type::fractional_seconds_type frac_sec =
+        time_arg.fractional_seconds();
+
+      if (null_when_zero && (frac_sec == 0)) {
+        return string_type();
+      }
+
+      //make sure there is no sign
+      return integral_as_string(
+        date_time::absolute_value(frac_sec),
+        time_duration_type::num_fractional_digits());
+    }
+
+    static
+    string_type
+    hours_as_string(const time_duration_type& time_arg, int width = 2)
+    {
+      return integral_as_string(date_time::absolute_value(time_arg.hours()), width);
+    }
+
+    template< typename IntT >
+    static
+    string_type
+    integral_as_string(IntT val, int width = 2)
+    {
+      std::basic_ostringstream<char_type> ss;
+      ss.imbue(std::locale::classic()); // don't want any formatting
+      ss << std::setw(width)
+        << std::setfill(static_cast<char_type>('0'));
+#if (defined(BOOST_MSVC) && (_MSC_VER < 1300))
+      // JDG [7/6/02 VC++ compatibility]
+      char_type buff[34];
+      ss << _i64toa(static_cast<boost::int64_t>(val), buff, 10);
+#else
+      ss << val;
+#endif
+      return ss.str();
+    }
+
+  private:
+    string_type m_time_duration_format;
+
+  };
+
+  template <class time_type, class CharT, class OutItrT>
+  std::locale::id time_facet<time_type, CharT, OutItrT>::id;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::fractional_seconds_format = time_formats<CharT>::fractional_seconds_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::fractional_seconds_or_none_format = time_formats<CharT>::fractional_seconds_or_none_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::seconds_with_fractional_seconds_format =
+    time_formats<CharT>::seconds_with_fractional_seconds_format;
+
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::zone_name_format =  time_formats<CharT>::zone_name_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::zone_abbrev_format =  time_formats<CharT>::zone_abbrev_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::zone_iso_extended_format =time_formats<CharT>::zone_iso_extended_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::posix_zone_string_format =time_formats<CharT>::posix_zone_string_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::zone_iso_format =  time_formats<CharT>::zone_iso_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::seconds_format =  time_formats<CharT>::seconds_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::hours_format =  time_formats<CharT>::hours_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::unrestricted_hours_format =  time_formats<CharT>::unrestricted_hours_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::standard_format =  time_formats<CharT>::standard_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::duration_seperator =  time_formats<CharT>::duration_seperator;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::negative_sign =  time_formats<CharT>::negative_sign;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::positive_sign =  time_formats<CharT>::positive_sign;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::duration_sign_negative_only =  time_formats<CharT>::duration_sign_negative_only;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::duration_sign_always =  time_formats<CharT>::duration_sign_always;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type,CharT, OutItrT>::char_type*
+  time_facet<time_type,CharT, OutItrT>::iso_time_format_specifier = time_formats<CharT>::iso_time_format_specifier;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::iso_time_format_extended_specifier = time_formats<CharT>::iso_time_format_extended_specifier;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::default_time_format =
+    time_formats<CharT>::default_time_format;
+
+  template <class time_type, class CharT, class OutItrT>
+  const typename time_facet<time_type, CharT, OutItrT>::char_type*
+  time_facet<time_type, CharT, OutItrT>::default_time_duration_format =
+    time_formats<CharT>::default_time_duration_format;
+
+
+  //! Facet for format-based input.
+  /*!
+   */
+  template <class time_type,
+            class CharT,
+            class InItrT = std::istreambuf_iterator<CharT, std::char_traits<CharT> > >
+  class time_input_facet :
+    public boost::date_time::date_input_facet<typename time_type::date_type , CharT, InItrT> {
+    public:
+      typedef typename time_type::date_type date_type;
+      typedef typename time_type::time_duration_type time_duration_type;
+      typedef typename time_duration_type::fractional_seconds_type fracional_seconds_type;
+      typedef boost::date_time::period<time_type,time_duration_type> period_type;
+      typedef boost::date_time::date_input_facet<typename time_type::date_type, CharT, InItrT> base_type;
+      typedef typename base_type::duration_type date_duration_type;
+      typedef typename base_type::year_type year_type;
+      typedef typename base_type::month_type month_type;
+      typedef typename base_type::day_type day_type;
+      typedef typename base_type::string_type string_type;
+      typedef typename string_type::const_iterator const_itr;
+      typedef typename base_type::char_type   char_type;
+      typedef typename base_type::format_date_parser_type format_date_parser_type;
+      typedef typename base_type::period_parser_type period_parser_type;
+      typedef typename base_type::special_values_parser_type special_values_parser_type;
+      typedef typename base_type::date_gen_parser_type date_gen_parser_type;
+      typedef typename base_type::special_values_parser_type::match_results match_results;
+
+      static const char_type* fractional_seconds_format;                // f
+      static const char_type* fractional_seconds_or_none_format;        // F
+      static const char_type* seconds_with_fractional_seconds_format;   // s
+      static const char_type* seconds_format;                           // S
+      static const char_type* standard_format;                          // x X
+      static const char_type* zone_abbrev_format;                       // z
+      static const char_type* zone_name_format;                         // Z
+      static const char_type* zone_iso_format;                          // q
+      static const char_type* zone_iso_extended_format;                 // Q
+      static const char_type* duration_seperator;
+      static const char_type* iso_time_format_specifier;
+      static const char_type* iso_time_format_extended_specifier;
+      static const char_type* default_time_input_format;
+      static const char_type* default_time_duration_format;
+      static std::locale::id id;
+
+      //! Constructor that takes a format string for a ptime
+      explicit time_input_facet(const string_type& format, ::size_t ref_arg = 0)
+        : base_type(format, ref_arg),
+          m_time_duration_format(default_time_duration_format)
+      { }
+
+      explicit time_input_facet(const string_type& format,
+                                const format_date_parser_type& date_parser,
+                                const special_values_parser_type& sv_parser,
+                                const period_parser_type& per_parser,
+                                const date_gen_parser_type& date_gen_parser,
+                                ::size_t ref_arg = 0)
+        : base_type(format,
+                    date_parser,
+                    sv_parser,
+                    per_parser,
+                    date_gen_parser,
+                    ref_arg),
+          m_time_duration_format(default_time_duration_format)
+      {}
+
+      //! sets default formats for ptime, local_date_time, and time_duration
+      explicit time_input_facet(::size_t ref_arg = 0)
+        : base_type(default_time_input_format, ref_arg),
+          m_time_duration_format(default_time_duration_format)
+      { }
+
+      //! Set the format for time_duration
+      void time_duration_format(const char_type* const format) {
+        m_time_duration_format = format;
+      }
+      virtual void set_iso_format()
+      {
+        this->m_format = iso_time_format_specifier;
+      }
+      virtual void set_iso_extended_format()
+      {
+        this->m_format = iso_time_format_extended_specifier;
+      }
+
+      InItrT get(InItrT& sitr,
+                 InItrT& stream_end,
+                 std::ios_base& ios_arg,
+                 period_type& p) const
+      {
+        p = this->m_period_parser.get_period(sitr,
+                                             stream_end,
+                                             ios_arg,
+                                             p,
+                                             time_duration_type::unit(),
+                                             *this);
+        return sitr;
+      }
+
+      //default ptime format is YYYY-Mon-DD HH:MM:SS[.fff...][ zzz]
+      //default time_duration format is %H:%M:%S%F HH:MM:SS[.fff...]
+
+      InItrT get(InItrT& sitr,
+                 InItrT& stream_end,
+                 std::ios_base& ios_arg,
+                 time_duration_type& td) const
+      {
+        // skip leading whitespace
+        while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
+
+        bool use_current_char = false;
+
+        // num_get will consume the +/-, we may need a copy if special_value
+        char_type c = '\0';
+        if((sitr != stream_end) && (*sitr == '-' || *sitr == '+')) {
+          c = *sitr;
+        }
+
+        typedef typename time_duration_type::hour_type hour_type;
+        typedef typename time_duration_type::min_type min_type;
+        typedef typename time_duration_type::sec_type sec_type;
+
+        hour_type hour = 0;
+        min_type min = 0;
+        sec_type sec = 0;
+        typename time_duration_type::fractional_seconds_type frac(0);
+
+        typedef std::num_get<CharT, InItrT> num_get;
+        if(!std::has_facet<num_get>(ios_arg.getloc())) {
+          num_get* ng = new num_get();
+          std::locale loc = std::locale(ios_arg.getloc(), ng);
+          ios_arg.imbue(loc);
+        }
+
+        const_itr itr(m_time_duration_format.begin());
+        while (itr != m_time_duration_format.end() && (sitr != stream_end)) {
+          if (*itr == '%') {
+            if (++itr == m_time_duration_format.end()) break;
+            if (*itr != '%') {
+              switch(*itr) {
+              case 'O':
+                {
+                  // A period may span more than 24 hours. In that case the format
+                  // string should be composed with the unrestricted hours specifier.
+                  hour = var_string_to_int<hour_type, CharT>(sitr, stream_end,
+                                      std::numeric_limits<hour_type>::digits10 + 1);
+                  if(hour == -1){
+                     return check_special_value(sitr, stream_end, td, c);
+                  }
+                  break;
+                }
+              case 'H':
+                {
+                  match_results mr;
+                  hour = fixed_string_to_int<hour_type, CharT>(sitr, stream_end, mr, 2);
+                  if(hour == -1){
+                     return check_special_value(sitr, stream_end, td, c);
+                  }
+                  break;
+                }
+              case 'M':
+                {
+                  match_results mr;
+                  min = fixed_string_to_int<min_type, CharT>(sitr, stream_end, mr, 2);
+                  if(min == -1){
+                     return check_special_value(sitr, stream_end, td, c);
+                  }
+                  break;
+                }
+              case 's':
+              case 'S':
+                {
+                  match_results mr;
+                  sec = fixed_string_to_int<sec_type, CharT>(sitr, stream_end, mr, 2);
+                  if(sec == -1){
+                     return check_special_value(sitr, stream_end, td, c);
+                  }
+                  if (*itr == 'S')
+                    break;
+                  // %s is the same as %S%f so we drop through into %f
+                }
+              case 'f':
+                {
+                  // check for decimal, check special_values if missing
+                  if(*sitr == '.') {
+                    ++sitr;
+                    parse_frac_type(sitr, stream_end, frac);
+                    // sitr will point to next expected char after this parsing
+                    // is complete so no need to advance it
+                    use_current_char = true;
+                  }
+                  else {
+                    return check_special_value(sitr, stream_end, td, c);
+                  }
+                  break;
+                }
+              case 'F':
+                {
+                  // check for decimal, skip if missing
+                  if(*sitr == '.') {
+                    ++sitr;
+                    parse_frac_type(sitr, stream_end, frac);
+                    // sitr will point to next expected char after this parsing
+                    // is complete so no need to advance it
+                    use_current_char = true;
+                  }
+                  else {
+                    // nothing was parsed so we don't want to advance sitr
+                    use_current_char = true;
+                  }
+                  break;
+                }
+              default:
+                {} // ignore what we don't understand?
+              }// switch
+            }
+            else { // itr == '%', second consecutive
+              ++sitr;
+            }
+
+            ++itr; //advance past format specifier
+          }
+          else {  //skip past chars in format and in buffer
+            ++itr;
+            // set use_current_char when sitr is already
+            // pointing at the next character to process
+            if (use_current_char) {
+              use_current_char = false;
+            }
+            else {
+              ++sitr;
+            }
+          }
+        }
+
+        td = time_duration_type(hour, min, sec, frac);
+        return sitr;
+      }
+
+
+      //! Parses a time object from the input stream
+      InItrT get(InItrT& sitr,
+                 InItrT& stream_end,
+                 std::ios_base& ios_arg,
+                 time_type& t) const
+      {
+        string_type tz_str;
+        return get(sitr, stream_end, ios_arg, t, tz_str, false);
+      }
+      //! Expects a time_zone in the input stream
+      InItrT get_local_time(InItrT& sitr,
+                            InItrT& stream_end,
+                            std::ios_base& ios_arg,
+                            time_type& t,
+                            string_type& tz_str) const
+      {
+        return get(sitr, stream_end, ios_arg, t, tz_str, true);
+      }
+
+    protected:
+
+      InItrT get(InItrT& sitr,
+                 InItrT& stream_end,
+                 std::ios_base& ios_arg,
+                 time_type& t,
+                 string_type& tz_str,
+                 bool time_is_local) const
+      {
+        // skip leading whitespace
+        while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
+
+        bool use_current_char = false;
+        bool use_current_format_char = false; // used whith two character flags
+
+        // num_get will consume the +/-, we may need a copy if special_value
+        char_type c = '\0';
+        if((sitr != stream_end) && (*sitr == '-' || *sitr == '+')) {
+          c = *sitr;
+        }
+
+        typedef typename time_duration_type::hour_type hour_type;
+        typedef typename time_duration_type::min_type min_type;
+        typedef typename time_duration_type::sec_type sec_type;
+
+        // time elements
+        hour_type hour = 0;
+        min_type min = 0;
+        sec_type sec = 0;
+        typename time_duration_type::fractional_seconds_type frac(0);
+        // date elements
+        short day_of_year(0);
+        /* Initialized the following to their minimum values. These intermediate
+         * objects are used so we get specific exceptions when part of the input
+         * is unparsable.
+         * Ex: "205-Jan-15" will throw a bad_year, "2005-Jsn-15"- bad_month, etc.*/
+        year_type t_year(1400);
+        month_type t_month(1);
+        day_type t_day(1);
+
+        typedef std::num_get<CharT, InItrT> num_get;
+        if(!std::has_facet<num_get>(ios_arg.getloc())) {
+          num_get* ng = new num_get();
+          std::locale loc = std::locale(ios_arg.getloc(), ng);
+          ios_arg.imbue(loc);
+        }
+
+        const_itr itr(this->m_format.begin());
+        while (itr != this->m_format.end() && (sitr != stream_end)) {
+          if (*itr == '%') {
+            if (++itr == this->m_format.end()) break;
+            if (*itr != '%') {
+              // the cases are grouped by date & time flags - not alphabetical order
+              switch(*itr) {
+                // date flags
+                case 'Y':
+                case 'y':
+                  {
+                    char_type cs[3] = { '%', *itr };
+                    string_type s(cs);
+                    match_results mr;
+                    try {
+                      t_year = this->m_parser.parse_year(sitr, stream_end, s, mr);
+                    }
+                    catch(std::out_of_range&) { // base class for bad_year exception
+                      if(this->m_sv_parser.match(sitr, stream_end, mr)) {
+                        t = time_type(static_cast<special_values>(mr.current_match));
+                        return sitr;
+                      }
+                      else {
+                        throw; // rethrow bad_year
+                      }
+                    }
+                    break;
+                  }
+                case 'B':
+                case 'b':
+                case 'm':
+                  {
+                    char_type cs[3] = { '%', *itr };
+                    string_type s(cs);
+                    match_results mr;
+                    try {
+                      t_month = this->m_parser.parse_month(sitr, stream_end, s, mr);
+                    }
+                    catch(std::out_of_range&) { // base class for bad_month exception
+                      if(this->m_sv_parser.match(sitr, stream_end, mr)) {
+                        t = time_type(static_cast<special_values>(mr.current_match));
+                        return sitr;
+                      }
+                      else {
+                        throw; // rethrow bad_month
+                      }
+                    }
+                    // did m_parser already advance sitr to next char?
+                    if(mr.has_remaining()) {
+                      use_current_char = true;
+                    }
+                    break;
+                  }
+                case 'a':
+                case 'A':
+                case 'w':
+                  {
+                    // weekday is not used in construction but we need to get it out of the stream
+                    char_type cs[3] = { '%', *itr };
+                    string_type s(cs);
+                    match_results mr;
+                    typename date_type::day_of_week_type wd(0);
+                    try {
+                      wd = this->m_parser.parse_weekday(sitr, stream_end, s, mr);
+                    }
+                    catch(std::out_of_range&) { // base class for bad_weekday exception
+                      if(this->m_sv_parser.match(sitr, stream_end, mr)) {
+                        t = time_type(static_cast<special_values>(mr.current_match));
+                        return sitr;
+                      }
+                      else {
+                        throw; // rethrow bad_weekday
+                      }
+                    }
+                    // did m_parser already advance sitr to next char?
+                    if(mr.has_remaining()) {
+                      use_current_char = true;
+                    }
+                    break;
+                  }
+                case 'j':
+                  {
+                    // code that gets julian day (from format_date_parser)
+                    match_results mr;
+                    day_of_year = fixed_string_to_int<unsigned short, CharT>(sitr, stream_end, mr, 3);
+                    if(day_of_year == -1) {
+                      if(this->m_sv_parser.match(sitr, stream_end, mr)) {
+                        t = time_type(static_cast<special_values>(mr.current_match));
+                        return sitr;
+                      }
+                    }
+                    // these next two lines are so we get an exception with bad input
+                    typedef typename time_type::date_type::day_of_year_type day_of_year_type;
+                    day_of_year_type t_day_of_year(day_of_year);
+                    break;
+                  }
+                case 'd':
+                  {
+                    try {
+                      t_day = this->m_parser.parse_day_of_month(sitr, stream_end);
+                    }
+                    catch(std::out_of_range&) { // base class for exception bad_day_of_month
+                      match_results mr;
+                      if(this->m_sv_parser.match(sitr, stream_end, mr)) {
+                        t = time_type(static_cast<special_values>(mr.current_match));
+                        return sitr;
+                      }
+                      else {
+                        throw; // rethrow bad_day_of_month
+                      }
+                    }
+                    break;
+                  }
+                // time flags
+                case 'H':
+                  {
+                    match_results mr;
+                    hour = fixed_string_to_int<hour_type, CharT>(sitr, stream_end, mr, 2);
+                    if(hour == -1){
+                       return check_special_value(sitr, stream_end, t, c);
+                    }
+                    break;
+                  }
+                case 'M':
+                  {
+                    match_results mr;
+                    min = fixed_string_to_int<min_type, CharT>(sitr, stream_end, mr, 2);
+                    if(min == -1){
+                       return check_special_value(sitr, stream_end, t, c);
+                    }
+                    break;
+                  }
+                case 's':
+                case 'S':
+                  {
+                    match_results mr;
+                    sec = fixed_string_to_int<sec_type, CharT>(sitr, stream_end, mr, 2);
+                    if(sec == -1){
+                       return check_special_value(sitr, stream_end, t, c);
+                    }
+                    if (*itr == 'S')
+                      break;
+                    // %s is the same as %S%f so we drop through into %f
+                  }
+                case 'f':
+                  {
+                    // check for decimal, check SV if missing
+                    if(*sitr == '.') {
+                      ++sitr;
+                      parse_frac_type(sitr, stream_end, frac);
+                      // sitr will point to next expected char after this parsing
+                      // is complete so no need to advance it
+                      use_current_char = true;
+                    }
+                    else {
+                      return check_special_value(sitr, stream_end, t, c);
+                    }
+                    break;
+                  }
+                case 'F':
+                  {
+                    // check for decimal, skip if missing
+                    if(*sitr == '.') {
+                      ++sitr;
+                      parse_frac_type(sitr, stream_end, frac);
+                      // sitr will point to next expected char after this parsing
+                      // is complete so no need to advance it
+                      use_current_char = true;
+                    }
+                    else {
+                      // nothing was parsed so we don't want to advance sitr
+                      use_current_char = true;
+                    }
+                    break;
+                  }
+                  // time_zone flags
+                //case 'q':
+                //case 'Q':
+                //case 'z':
+                case 'Z':
+                  {
+                    if(time_is_local) { // skip if 't' is a ptime
+                      ++itr;
+                      if(*itr == 'P') {
+                        // skip leading whitespace
+                        while((sitr != stream_end) && std::isspace(*sitr)) { ++sitr; }
+                        // parse zone
+                        while((sitr != stream_end) && (!std::isspace(*sitr))) {
+                          tz_str += *sitr;
+                          ++sitr;
+                        }
+                      }
+                      else {
+                        use_current_format_char = true;
+                      }
+
+                    }
+                    else {
+                      // nothing was parsed so we don't want to advance sitr
+                      use_current_char = true;
+                    }
+
+                    break;
+                  }
+                default:
+                {} // ignore what we don't understand?
+              }// switch
+            }
+            else { // itr == '%', second consecutive
+              ++sitr;
+            }
+
+            if(use_current_format_char) {
+              use_current_format_char = false;
+            }
+            else {
+              ++itr; //advance past format specifier
+            }
+
+          }
+          else {  //skip past chars in format and in buffer
+            ++itr;
+            // set use_current_char when sitr is already
+            // pointing at the next character to process
+            if (use_current_char) {
+              use_current_char = false;
+            }
+            else {
+              ++sitr;
+            }
+          }
+        }
+
+        date_type d(not_a_date_time);
+        if (day_of_year > 0) {
+          d = date_type(static_cast<unsigned short>(t_year-1),12,31) + date_duration_type(day_of_year);
+        }
+        else {
+          d = date_type(t_year, t_month, t_day);
+        }
+
+        time_duration_type td(hour, min, sec, frac);
+        t = time_type(d, td);
+        return sitr;
+      }
+
+      //! Helper function to check for special_value
+      /*! First character may have been consumed during original parse
+       * attempt. Parameter 'c' should be a copy of that character.
+       * Throws ios_base::failure if parse fails. */
+      template<class temporal_type>
+      inline
+      InItrT check_special_value(InItrT& sitr,InItrT& stream_end, temporal_type& tt, char_type c='\0') const
+      {
+        match_results mr;
+        if((c == '-' || c == '+') && (*sitr != c)) { // was the first character consumed?
+          mr.cache += c;
+        }
+        this->m_sv_parser.match(sitr, stream_end, mr);
+        if(mr.current_match == match_results::PARSE_ERROR) {
+          std::string tmp = convert_string_type<char_type, char>(mr.cache);
+          boost::throw_exception(std::ios_base::failure("Parse failed. No match found for '" + tmp + "'"));
+          BOOST_DATE_TIME_UNREACHABLE_EXPRESSION(return sitr); // should never reach
+        }
+        tt = temporal_type(static_cast<special_values>(mr.current_match));
+        return sitr;
+      }
+
+      //! Helper function for parsing a fractional second type from the stream
+      void parse_frac_type(InItrT& sitr,
+                           InItrT& stream_end,
+                           fracional_seconds_type& frac) const
+      {
+        string_type cache;
+        while((sitr != stream_end) && std::isdigit(*sitr)) {
+          cache += *sitr;
+          ++sitr;
+        }
+        if(cache.size() > 0) {
+          unsigned short precision = time_duration_type::num_fractional_digits();
+          // input may be only the first few decimal places
+          if(cache.size() < precision) {
+            frac = lexical_cast<fracional_seconds_type>(cache);
+            frac = decimal_adjust(frac, static_cast<unsigned short>(precision - cache.size()));
+          }
+          else {
+            // if input has too many decimal places, drop excess digits
+            frac = lexical_cast<fracional_seconds_type>(cache.substr(0, precision));
+          }
+        }
+      }
+
+    private:
+      string_type m_time_duration_format;
+
+      //! Helper function to adjust trailing zeros when parsing fractional digits
+      template<class int_type>
+      inline
+      int_type decimal_adjust(int_type val, const unsigned short places) const
+      {
+        unsigned long factor = 1;
+        for(int i = 0; i < places; ++i){
+          factor *= 10; // shift decimal to the right
+        }
+        return val * factor;
+      }
+
+  };
+
+template <class time_type, class CharT, class InItrT>
+  std::locale::id time_input_facet<time_type, CharT, InItrT>::id;
+
+template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::fractional_seconds_format = time_formats<CharT>::fractional_seconds_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::fractional_seconds_or_none_format = time_formats<CharT>::fractional_seconds_or_none_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::seconds_with_fractional_seconds_format = time_formats<CharT>::seconds_with_fractional_seconds_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::seconds_format = time_formats<CharT>::seconds_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::standard_format = time_formats<CharT>::standard_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::zone_abbrev_format = time_formats<CharT>::zone_abbrev_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::zone_name_format = time_formats<CharT>::zone_name_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::zone_iso_format = time_formats<CharT>::zone_iso_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::zone_iso_extended_format = time_formats<CharT>::zone_iso_extended_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::duration_seperator = time_formats<CharT>::duration_seperator;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::iso_time_format_specifier = time_formats<CharT>::iso_time_format_specifier;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::iso_time_format_extended_specifier = time_formats<CharT>::iso_time_format_extended_specifier;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::default_time_input_format = time_formats<CharT>::default_time_input_format;
+
+  template <class time_type, class CharT, class InItrT>
+  const typename time_input_facet<time_type, CharT, InItrT>::char_type*
+  time_input_facet<time_type, CharT, InItrT>::default_time_duration_format = time_formats<CharT>::default_time_duration_format;
+
+
+} } // namespaces
+
+
+#endif
+