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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/date_time/time_facet.hpp | |
| download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
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Diffstat (limited to '3rdParty/Boost/boost/date_time/time_facet.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/date_time/time_facet.hpp | 1327 |
1 files changed, 1327 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/date_time/time_facet.hpp b/3rdParty/Boost/boost/date_time/time_facet.hpp new file mode 100644 index 0000000..c1a2f8e --- /dev/null +++ b/3rdParty/Boost/boost/date_time/time_facet.hpp @@ -0,0 +1,1327 @@ + +#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: 2008-11-23 06:13:35 -0500 (Sun, 23 Nov 2008) $ + */ + +#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/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> + +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 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>::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] = + {'%','H',':','%','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> { + 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 a_ref = 0) + : base_type(default_time_format, period_formatter_type(), special_values_formatter_type(), date_gen_formatter_type(), a_ref), + 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* a_format, + period_formatter_type period_formatter = 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 a_ref = 0) + : base_type(a_format, + period_formatter, + special_value_formatter, + dg_formatter, + a_ref), + 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 a_next, + std::ios_base& a_ios, + char_type a_fill, + const time_type& a_time) const + { + if (a_time.is_special()) { + return this->do_put_special(a_next, a_ios, a_fill, + a_time.date().as_special()); + } + string_type format(this->m_format); + + 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(a_time.time_of_day(), false); + char_type sep = std::use_facet<std::numpunct<char_type> >(a_ios.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); + } + /* 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 (format.find(posix_zone_string_format) != string_type::npos) { + if(a_time.zone_abbrev().empty()) { + // if zone_abbrev() returns an empty string, we want to + // erase posix_zone_string_format from format + boost::algorithm::erase_all(format, posix_zone_string_format); + } + else{ + boost::algorithm::replace_all(format, + posix_zone_string_format, + a_time.zone_as_posix_string()); + } + } + if (format.find(zone_name_format) != string_type::npos) { + if(a_time.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(format, ss.str()); + } + else{ + boost::algorithm::replace_all(format, + zone_name_format, + a_time.zone_name()); + } + } + if (format.find(zone_abbrev_format) != string_type::npos) { + if(a_time.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(format, ss.str()); + } + else{ + boost::algorithm::replace_all(format, + zone_abbrev_format, + a_time.zone_abbrev(false)); + } + } + if (format.find(zone_iso_extended_format) != string_type::npos) { + if(a_time.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(format, zone_iso_extended_format); + } + else{ + boost::algorithm::replace_all(format, + zone_iso_extended_format, + a_time.zone_name(true)); + } + } + + if (format.find(zone_iso_format) != string_type::npos) { + if(a_time.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(format, zone_iso_format); + } + else{ + boost::algorithm::replace_all(format, + zone_iso_format, + a_time.zone_abbrev(true)); + } + } + if (format.find(fractional_seconds_format) != string_type::npos) { + // replace %f with nnnnnnn + if (!frac_str.size()) { + frac_str = fractional_seconds_as_string(a_time.time_of_day(), 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(a_time.time_of_day(), true); + if (frac_str.size()) { + char_type sep = std::use_facet<std::numpunct<char_type> >(a_ios.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(a_next, a_ios, a_fill, + to_tm(a_time), format); + } + + //! put function for time_duration + OutItrT put(OutItrT a_next, + std::ios_base& a_ios, + char_type a_fill, + const time_duration_type& a_time_dur) const + { + if (a_time_dur.is_special()) { + return this->do_put_special(a_next, a_ios, a_fill, + a_time_dur.get_rep().as_special()); + } + + string_type format(m_time_duration_format); + if (a_time_dur.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); + } + + /* + * 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(a_time_dur); + 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(a_time_dur); + 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(a_time_dur, false); + char_type sep = std::use_facet<std::numpunct<char_type> >(a_ios.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(a_time_dur, 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(a_time_dur, true); + if (frac_str.size()) { + char_type sep = std::use_facet<std::numpunct<char_type> >(a_ios.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(a_next, a_ios, a_fill, + to_tm(a_time_dur), format); + } + + OutItrT put(OutItrT next, std::ios_base& a_ios, + char_type fill, const period_type& p) const + { + return this->m_period_formatter.put_period(next, a_ios, fill,p,*this); + } + + + protected: + + static + string_type + fractional_seconds_as_string(const time_duration_type& a_time, + bool null_when_zero) + { + typename time_duration_type::fractional_seconds_type frac_sec = + a_time.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& a_time, int width = 2) + { + return integral_as_string(date_time::absolute_value(a_time.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 a_ref = 0) + : base_type(format, a_ref), + 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 a_ref = 0) + : base_type(format, + date_parser, + sv_parser, + per_parser, + date_gen_parser, + a_ref), + 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 a_ref = 0) + : base_type(default_time_input_format, a_ref), + 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& a_ios, + period_type& p) const + { + p = this->m_period_parser.get_period(sitr, + stream_end, + a_ios, + 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& a_ios, + 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>(a_ios.getloc())) { + num_get* ng = new num_get(); + std::locale loc = std::locale(a_ios.getloc(), ng); + a_ios.imbue(loc); + } + + const_itr itr(m_time_duration_format.begin()); + while (itr != m_time_duration_format.end() && (sitr != stream_end)) { + if (*itr == '%') { + ++itr; + 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& a_ios, + time_type& t) const + { + string_type tz_str; + return get(sitr, stream_end, a_ios, t, tz_str, false); + } + //! Expects a time_zone in the input stream + InItrT get_local_time(InItrT& sitr, + InItrT& stream_end, + std::ios_base& a_ios, + time_type& t, + string_type& tz_str) const + { + return get(sitr, stream_end, a_ios, t, tz_str, true); + } + + protected: + + InItrT get(InItrT& sitr, + InItrT& stream_end, + std::ios_base& a_ios, + 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>(a_ios.getloc())) { + num_get* ng = new num_get(); + std::locale loc = std::locale(a_ios.getloc(), ng); + a_ios.imbue(loc); + } + + const_itr itr(this->m_format.begin()); + while (itr != this->m_format.end() && (sitr != stream_end)) { + if (*itr == '%') { + ++itr; + 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 + |