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/*
* Copyright (c) 2003-2009, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @addtogroup util
*/
/**
* @file times.h
* @author John Wiegley
*
* @ingroup util
*
* @brief datetime_t and date_t objects
*/
#ifndef _TIMES_H
#define _TIMES_H
#include "utils.h"
namespace ledger {
DECLARE_EXCEPTION(datetime_error, std::runtime_error);
DECLARE_EXCEPTION(date_error, std::runtime_error);
typedef boost::posix_time::ptime datetime_t;
typedef datetime_t::time_duration_type time_duration_t;
inline bool is_valid(const datetime_t& moment) {
return ! moment.is_not_a_date_time();
}
typedef boost::gregorian::date date_t;
typedef boost::gregorian::date_duration date_duration_t;
typedef boost::gregorian::date_iterator date_iterator_t;
inline bool is_valid(const date_t& moment) {
return ! moment.is_not_a_date();
}
extern optional<datetime_t> epoch;
#ifdef BOOST_DATE_TIME_HAS_HIGH_PRECISION_CLOCK
#define TRUE_CURRENT_TIME() (boost::posix_time::microsec_clock::universal_time())
#define CURRENT_TIME() (epoch ? *epoch : TRUE_CURRENT_TIME())
#else
#define TRUE_CURRENT_TIME() (boost::posix_time::second_clock::universal_time())
#define CURRENT_TIME() (epoch ? *epoch : TRUE_CURRENT_TIME())
#endif
#define CURRENT_DATE() \
(epoch ? epoch->date() : boost::gregorian::day_clock::universal_day())
extern date_time::weekdays start_of_week;
optional<date_time::weekdays>
string_to_day_of_week(const std::string& str);
optional<date_time::months_of_year>
string_to_month_of_year(const std::string& str);
datetime_t parse_datetime(const char * str,
optional<date_t::year_type> current_year = none);
inline datetime_t parse_datetime(const std::string& str,
optional<date_t::year_type> current_year = none) {
return parse_datetime(str.c_str(), current_year);
}
date_t parse_date(const char * str,
optional<date_t::year_type> current_year = none);
inline date_t parse_date(const std::string& str,
optional<date_t::year_type> current_year = none) {
return parse_date(str.c_str(), current_year);
}
enum format_type_t {
FMT_WRITTEN, FMT_PRINTED, FMT_CUSTOM
};
std::string format_datetime(const datetime_t& when,
const format_type_t format_type = FMT_PRINTED,
const optional<const char *>& format = none);
void set_datetime_format(const char * format);
std::string format_date(const date_t& when,
const format_type_t format_type = FMT_PRINTED,
const optional<const char *>& format = none);
void set_date_format(const char * format);
void set_input_date_format(const char * format);
class date_interval_t : public equality_comparable<date_interval_t>
{
public:
typedef variant<gregorian::days,
gregorian::weeks,
gregorian::months,
gregorian::years> duration_t;
static date_t add_duration(const date_t& date,
const duration_t& duration);
static date_t subtract_duration(const date_t& date,
const duration_t& duration);
optional<date_t> start;
bool aligned;
optional<duration_t> skip_duration;
std::size_t factor;
optional<date_t> next;
optional<duration_t> duration;
optional<date_t> end_of_duration;
optional<date_t> end;
explicit date_interval_t() : aligned(false), factor(1) {
TRACE_CTOR(date_interval_t, "");
}
date_interval_t(const string& str) : aligned(false), factor(1) {
TRACE_CTOR(date_interval_t, "const string&");
parse(str);
}
date_interval_t(const date_interval_t& other)
: start(other.start),
aligned(other.aligned),
skip_duration(other.skip_duration),
factor(other.factor),
next(other.next),
duration(other.duration),
end_of_duration(other.end_of_duration),
end(other.end) {
TRACE_CTOR(date_interval_t, "copy");
}
~date_interval_t() throw() {
TRACE_DTOR(date_interval_t);
}
bool operator==(const date_interval_t& other) const {
return (start == other.start &&
(! start || *start == *other.start));
}
operator bool() const {
return is_valid();
}
void parse(std::istream& in);
void parse(const string& str) {
std::istringstream in(str);
parse(in);
}
void resolve_end();
void stabilize(const optional<date_t>& date = none);
bool is_valid() const {
return start;
}
/** Find the current or next period containing date. Returns true if the
date_interval_t object has been altered to reflect the interval
containing date, or false if no such period can be found. */
bool find_period(const date_t& date);
optional<date_t> inclusive_end() const {
if (end_of_duration)
return *end_of_duration - gregorian::days(1);
else
return none;
}
date_interval_t& operator++();
};
void times_initialize();
void times_shutdown();
std::ostream& operator<<(std::ostream& out,
const date_interval_t::duration_t& duration);
} // namespace ledger
#endif // _TIMES_H
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