195 lines
6.4 KiB
C++
195 lines
6.4 KiB
C++
#include <iostream>
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#include <boost/date_time/local_time/local_time.hpp>
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int main(){
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using namespace boost::gregorian;
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using namespace boost::posix_time;
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using namespace boost::local_time;
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using namespace std;
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/****** basic use ******/
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date d(2004, Feb, 29);
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time_duration td(12,34,56,789);
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stringstream ss;
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ss << d << ' ' << td;
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ptime pt(not_a_date_time);
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cout << pt << endl; // "not-a-date-time"
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ss >> pt;
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cout << pt << endl; // "2004-Feb-29 12:34:56.000789"
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ss.str("");
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ss << pt << " EDT-05EDT,M4.1.0,M10.5.0";
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local_date_time ldt(not_a_date_time);
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ss >> ldt;
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cout << ldt << endl; // " 2004-Feb-29 12:34:56.000789 EDT"
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/****** format strings ******/
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local_time_facet* output_facet = new local_time_facet();
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local_time_input_facet* input_facet = new local_time_input_facet();
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ss.imbue(locale(locale::classic(), output_facet));
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ss.imbue(locale(ss.getloc(), input_facet));
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output_facet->format("%a %b %d, %H:%M %z");
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ss.str("");
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ss << ldt;
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cout << ss.str() << endl; // "Sun Feb 29, 12:34 EDT"
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output_facet->format(local_time_facet::iso_time_format_specifier);
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ss.str("");
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ss << ldt;
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cout << ss.str() << endl; // "20040229T123456.000789-0500"
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output_facet->format(local_time_facet::iso_time_format_extended_specifier);
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ss.str("");
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ss << ldt;
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cout << ss.str() << endl; // "2004-02-29 12:34:56.000789-05:00"
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// extra words in format
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string my_format("The extended ordinal time %Y-%jT%H:%M can also be represented as %A %B %d, %Y");
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output_facet->format(my_format.c_str());
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input_facet->format(my_format.c_str());
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ss.str("");
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ss << ldt;
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cout << ss.str() << endl;
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// matching extra words in input
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ss.str("The extended ordinal time 2005-128T12:15 can also be represented as Sunday May 08, 2005");
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ss >> ldt;
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cout << ldt << endl; // cout is using default format "2005-May-08 12:15:00 UTC"
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/****** content strings ******/
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// set up the collections of custom strings.
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// only the full names are altered for the sake of brevity
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string month_names[12] = { "january", "february", "march",
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"april", "may", "june",
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"july", "august", "september",
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"october", "november", "december" };
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vector<string> long_months(&month_names[0], &month_names[12]);
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string day_names[7] = { "sunday", "monday", "tuesday", "wednesday",
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"thursday", "friday", "saturday" };
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vector<string> long_days(&day_names[0], &day_names[7]);
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// create date_facet and date_input_facet using all defaults
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date_facet* date_output = new date_facet();
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date_input_facet* date_input = new date_input_facet();
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ss.imbue(locale(ss.getloc(), date_output));
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ss.imbue(locale(ss.getloc(), date_input));
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// replace names in the output facet
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date_output->long_month_names(long_months);
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date_output->long_weekday_names(long_days);
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// replace names in the input facet
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date_input->long_month_names(long_months);
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date_input->long_weekday_names(long_days);
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// customize month, weekday and date formats
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date_output->format("%Y-%B-%d");
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date_input->format("%Y-%B-%d");
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date_output->month_format("%B"); // full name
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date_input->month_format("%B"); // full name
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date_output->weekday_format("%A"); // full name
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date_input->weekday_format("%A"); // full name
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ss.str("");
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ss << greg_month(3);
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cout << ss.str() << endl; // "march"
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ss.str("");
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ss << greg_weekday(3);
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cout << ss.str() << endl; // "tuesday"
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ss.str("");
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ss << date(2005,Jul,4);
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cout << ss.str() << endl; // "2005-july-04"
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/****** special values ******/
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// reset the formats to defaults
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output_facet->format(local_time_facet::default_time_format);
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input_facet->format(local_time_input_facet::default_time_input_format);
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// create custom special_values parser and formatter objects
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// and add them to the facets
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string sv[5] = {"nadt","neg_inf", "pos_inf", "min_dt", "max_dt" };
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vector<string> sv_names(&sv[0], &sv[5]);
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special_values_parser sv_parser(sv_names.begin(), sv_names.end());
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special_values_formatter sv_formatter(sv_names.begin(), sv_names.end());
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output_facet->special_values_formatter(sv_formatter);
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input_facet->special_values_parser(sv_parser);
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ss.str("");
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ldt = local_date_time(not_a_date_time);
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ss << ldt;
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cout << ss.str() << endl; // "nadt"
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ss.str("min_dt");
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ss >> ldt;
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ss.str("");
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ss << ldt;
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cout << ss.str() << endl; // "1400-Jan-01 00:00:00 UTC"
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/****** date/time periods ******/
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// reset all formats to defaults
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date_output->format(date_facet::default_date_format);
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date_input->format(date_facet::default_date_format);
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date_output->month_format("%b"); // abbrev
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date_input->month_format("%b"); // abbrev
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date_output->weekday_format("%a"); // abbrev
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date_input->weekday_format("%a"); // abbrev
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// create our date_period
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date_period dp(date(2005,Mar,1), days(31)); // month of march
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// custom period formatter and parser
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period_formatter per_formatter(period_formatter::AS_OPEN_RANGE,
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" to ", "from ", " exclusive", " inclusive" );
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period_parser per_parser(period_parser::AS_OPEN_RANGE,
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" to ", "from ", " exclusive" , " inclusive" );
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// default output
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ss.str("");
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ss << dp;
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cout << ss.str() << endl; // "[2005-Mar-01/2005-Mar-31]"
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// add out custom parser and formatter to the facets
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date_output->period_formatter(per_formatter);
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date_input->period_parser(per_parser);
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// custom output
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ss.str("");
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ss << dp;
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cout << ss.str() << endl; // "from 2005-Feb-01 to 2005-Apr-01 exclusive"
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/****** date generators ******/
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// custom date_generator phrases
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string dg_phrases[9] = { "1st", "2nd", "3rd", "4th", "5th",
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"final", "prior to", "following", "in" };
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vector<string> phrases(&dg_phrases[0], &dg_phrases[9]);
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// create our date_generator
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first_day_of_the_week_before d_gen(Monday);
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// default output
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ss.str("");
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ss << d_gen;
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cout << ss.str() << endl; // "Mon before"
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// add our custom strings to the date facets
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date_output->date_gen_phrase_strings(phrases);
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date_input->date_gen_element_strings(phrases);
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// custom output
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ss.str("");
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ss << d_gen;
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cout << ss.str() << endl; // "Mon prior to"
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return 0;
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}
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/* Copyright 2005: CrystalClear Software, Inc
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* http://www.crystalclearsoftware.com
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*
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* Subject to the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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*/
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