ladybird/Libraries/LibCore/DateTime.h

89 lines
2.7 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/ByteString.h>
#include <AK/StringView.h>
#include <LibIPC/Forward.h>
#include <time.h>
namespace Core {
// Represents a time in local time.
class DateTime {
public:
time_t timestamp() const { return m_timestamp; }
unsigned year() const { return m_year; }
unsigned month() const { return m_month; }
unsigned day() const { return m_day; }
unsigned hour() const { return m_hour; }
unsigned minute() const { return m_minute; }
unsigned second() const { return m_second; }
unsigned weekday() const;
unsigned days_in_month() const;
unsigned day_of_year() const;
bool is_leap_year() const;
void set_time(int year, int month = 1, int day = 1, int hour = 0, int minute = 0, int second = 0);
void set_time_only(int hour, int minute, Optional<int> second = {});
void set_date(Core::DateTime const& other);
enum class LocalTime {
Yes,
No,
};
ErrorOr<String> to_string(StringView format = "%Y-%m-%d %H:%M:%S"sv, LocalTime = LocalTime::Yes) const;
ByteString to_byte_string(StringView format = "%Y-%m-%d %H:%M:%S"sv, LocalTime = LocalTime::Yes) const;
static DateTime create(int year, int month = 1, int day = 1, int hour = 0, int minute = 0, int second = 0);
static DateTime now();
static DateTime from_timestamp(time_t);
static Optional<DateTime> parse(StringView format, StringView string);
bool operator<(DateTime const& other) const { return m_timestamp < other.m_timestamp; }
bool operator>(DateTime const& other) const { return m_timestamp > other.m_timestamp; }
bool operator<=(DateTime const& other) const { return m_timestamp <= other.m_timestamp; }
bool operator>=(DateTime const& other) const { return m_timestamp >= other.m_timestamp; }
bool operator==(DateTime const& other) const { return m_timestamp == other.m_timestamp; }
private:
time_t m_timestamp { 0 };
int m_year { 0 };
int m_month { 0 };
int m_day { 0 };
int m_hour { 0 };
int m_minute { 0 };
int m_second { 0 };
};
}
namespace AK {
template<>
struct Formatter<Core::DateTime> : StandardFormatter {
ErrorOr<void> format(FormatBuilder& builder, Core::DateTime const& value)
{
// Can't use DateTime::to_string() here: It doesn't propagate allocation failure.
return builder.builder().try_appendff("{:04d}-{:02d}-{:02d} {:02d}:{:02d}:{:02d}"sv,
value.year(), value.month(), value.day(),
value.hour(), value.minute(), value.second());
}
};
}
namespace IPC {
template<>
ErrorOr<void> encode(Encoder&, Core::DateTime const&);
template<>
ErrorOr<Core::DateTime> decode(Decoder&);
}