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use tz::*;
fn main() -> Result<()> {
#[cfg(feature = "std")]
{
//
// TimeZone
//
// 2000-01-01T00:00:00Z
let unix_time = 946684800;
// Get UTC time zone
let time_zone_utc = TimeZone::utc();
println!("{:?}", time_zone_utc.find_local_time_type(unix_time)?);
// Get fixed time zone at GMT-1
let time_zone_fixed = TimeZone::fixed(-3600)?;
println!("{:?}", time_zone_fixed.find_local_time_type(unix_time)?.ut_offset());
// Get local time zone (UNIX only)
let time_zone_local = TimeZone::local()?;
println!("{:?}", time_zone_local.find_local_time_type(unix_time)?.ut_offset());
// Get the current local time type
let current_local_time_type = time_zone_local.find_current_local_time_type()?;
println!("{:?}", current_local_time_type);
// Get time zone from a TZ string:
// From an absolute file
let _ = TimeZone::from_posix_tz("/usr/share/zoneinfo/Pacific/Auckland");
// From a file relative to the system timezone directory
let _ = TimeZone::from_posix_tz("Pacific/Auckland");
// From a time zone description
TimeZone::from_posix_tz("HST10")?;
TimeZone::from_posix_tz("<-03>3")?;
TimeZone::from_posix_tz("NZST-12:00:00NZDT-13:00:00,M10.1.0,M3.3.0")?;
// Use a leading colon to force searching for a corresponding file
let _ = TimeZone::from_posix_tz(":UTC");
//
// DateTime
//
// Get the current UTC date time
let current_utc_date_time = UtcDateTime::now()?;
println!("{:?}", current_utc_date_time);
// Create a new UTC date time (2000-01-01T00:00:00.123456789Z)
let utc_date_time = UtcDateTime::new(2000, 1, 1, 0, 0, 0, 123_456_789)?;
println!("{}", utc_date_time);
println!("{:?}", utc_date_time);
// Create a new UTC date time from a Unix time with nanoseconds (2000-01-01T00:00:00.123456789Z)
let other_utc_date_time = UtcDateTime::from_timespec(946684800, 123_456_789)?;
println!("{}", other_utc_date_time);
println!("{:?}", other_utc_date_time);
// Project the UTC date time to a time zone
let date_time = utc_date_time.project(TimeZone::fixed(-3600)?.as_ref())?;
println!("{}", date_time);
println!("{:#?}", date_time);
// Project the date time to another time zone
let other_date_time = date_time.project(TimeZone::fixed(3600)?.as_ref())?;
println!("{}", other_date_time);
println!("{:#?}", other_date_time);
// Create a new date time from a Unix time with nanoseconds and a time zone (2000-01-01T00:00:00.123456789Z)
let another_date_time = DateTime::from_timespec(946684800, 123_456_789, TimeZone::fixed(86400)?.as_ref())?;
println!("{}", another_date_time);
println!("{:#?}", another_date_time);
// Get the corresponding UTC Unix times with nanoseconds
println!("{:?}", (utc_date_time.unix_time(), utc_date_time.nanoseconds()));
println!("{:?}", (other_utc_date_time.unix_time(), other_utc_date_time.nanoseconds()));
println!("{:?}", (date_time.unix_time(), date_time.nanoseconds()));
println!("{:?}", (other_date_time.unix_time(), other_date_time.nanoseconds()));
// Nanoseconds are always added towards the future
let neg_utc_date_time = UtcDateTime::from_timespec(-1, 123_456_789)?;
println!("{}", neg_utc_date_time);
println!("{}", neg_utc_date_time.total_nanoseconds());
// Get the current date time at the local time zone (UNIX only)
let time_zone_local = TimeZone::local()?;
let date_time = DateTime::now(time_zone_local.as_ref())?;
println!("{:#?}", date_time);
// Create a new date time with an UTC offset (2000-01-01T01:00:00.123456789+01:00)
let date_time = DateTime::new(2000, 1, 1, 1, 0, 0, 123_456_789, LocalTimeType::with_ut_offset(3600)?)?;
println!("{:#?}", date_time);
//
// Find the possible date times corresponding to a date, a time and a time zone
//
let time_zone = TimeZone::from_posix_tz("CET-1CEST,M3.5.0,M10.5.0/3")?;
// Found date time is unique
let found_date_times = DateTime::find(2000, 1, 1, 0, 0, 0, 0, time_zone.as_ref())?;
println!("{:#?}", found_date_times);
println!("{:#?}", found_date_times.unique());
println!("{:#?}", found_date_times.earliest());
println!("{:#?}", found_date_times.latest());
// Found date time was skipped by a forward transition
let found_date_times = DateTime::find(2000, 3, 26, 2, 30, 0, 0, time_zone.as_ref())?;
println!("{:#?}", found_date_times);
println!("{:#?}", found_date_times.unique());
println!("{:#?}", found_date_times.earliest());
println!("{:#?}", found_date_times.latest());
// Found date time is ambiguous because of a backward transition
let found_date_times = DateTime::find(2000, 10, 29, 2, 30, 0, 0, time_zone.as_ref())?;
println!("{:#?}", found_date_times);
println!("{:#?}", found_date_times.unique());
println!("{:#?}", found_date_times.earliest());
println!("{:#?}", found_date_times.latest());
}
Ok(())
}
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