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// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Core Foundation time zone objects.
use core_foundation_sys::base::kCFAllocatorDefault;
pub use core_foundation_sys::timezone::*;
use crate::base::TCFType;
use crate::date::{CFDate, CFTimeInterval};
use crate::string::CFString;
#[cfg(feature = "with-chrono")]
use chrono::{FixedOffset, NaiveDateTime};
declare_TCFType! {
/// A time zone.
CFTimeZone, CFTimeZoneRef
}
impl_TCFType!(CFTimeZone, CFTimeZoneRef, CFTimeZoneGetTypeID);
impl_CFTypeDescription!(CFTimeZone);
impl Default for CFTimeZone {
fn default() -> CFTimeZone {
unsafe {
let tz_ref = CFTimeZoneCopyDefault();
TCFType::wrap_under_create_rule(tz_ref)
}
}
}
impl CFTimeZone {
#[inline]
pub fn new(interval: CFTimeInterval) -> CFTimeZone {
unsafe {
let tz_ref = CFTimeZoneCreateWithTimeIntervalFromGMT(kCFAllocatorDefault, interval);
TCFType::wrap_under_create_rule(tz_ref)
}
}
#[inline]
pub fn system() -> CFTimeZone {
unsafe {
let tz_ref = CFTimeZoneCopySystem();
TCFType::wrap_under_create_rule(tz_ref)
}
}
pub fn seconds_from_gmt(&self, date: CFDate) -> CFTimeInterval {
unsafe { CFTimeZoneGetSecondsFromGMT(self.0, date.abs_time()) }
}
#[cfg(feature = "with-chrono")]
pub fn offset_at_date(&self, date: NaiveDateTime) -> FixedOffset {
let date = CFDate::from_naive_utc(date);
FixedOffset::east(self.seconds_from_gmt(date) as i32)
}
#[cfg(feature = "with-chrono")]
pub fn from_offset(offset: FixedOffset) -> CFTimeZone {
CFTimeZone::new(offset.local_minus_utc() as f64)
}
/// The timezone database ID that identifies the time zone. E.g. `"America/Los_Angeles" `or
/// `"Europe/Paris"`.
pub fn name(&self) -> CFString {
unsafe { CFString::wrap_under_get_rule(CFTimeZoneGetName(self.0)) }
}
}
#[cfg(test)]
mod test {
use super::CFTimeZone;
#[cfg(feature = "with-chrono")]
use chrono::{FixedOffset, NaiveDateTime};
#[test]
fn timezone_comparison() {
let system = CFTimeZone::system();
let default = CFTimeZone::default();
assert_eq!(system, default);
}
#[test]
#[cfg(feature = "with-chrono")]
fn timezone_chrono_conversion() {
let offset = FixedOffset::west(28800);
let tz = CFTimeZone::from_offset(offset);
let converted = tz.offset_at_date(NaiveDateTime::from_timestamp(0, 0));
assert_eq!(offset, converted);
}
}