127 lines
3.7 KiB
Rust
127 lines
3.7 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
//! Platform wrappers for converting UTC times to and from the local time zone.
|
|
//!
|
|
//! This code was rescued from v0.1 of the time crate, which is no longer
|
|
//! maintained. It has been substantially stripped down to the bare minimum
|
|
//! required by chrono.
|
|
|
|
use std::time::{SystemTime, UNIX_EPOCH};
|
|
|
|
#[cfg(any(target_arch = "wasm32", target_env = "sgx"))]
|
|
#[path = "sys/stub.rs"]
|
|
mod inner;
|
|
|
|
#[cfg(unix)]
|
|
#[path = "sys/unix.rs"]
|
|
mod inner;
|
|
|
|
#[cfg(windows)]
|
|
#[path = "sys/windows.rs"]
|
|
mod inner;
|
|
|
|
/// A record specifying a time value in seconds and nanoseconds, where
|
|
/// nanoseconds represent the offset from the given second.
|
|
///
|
|
/// For example a timespec of 1.2 seconds after the beginning of the epoch would
|
|
/// be represented as {sec: 1, nsec: 200000000}.
|
|
pub struct Timespec {
|
|
pub sec: i64,
|
|
pub nsec: i32,
|
|
}
|
|
|
|
impl Timespec {
|
|
/// Constructs a timespec representing the current time in UTC.
|
|
pub fn now() -> Timespec {
|
|
let st =
|
|
SystemTime::now().duration_since(UNIX_EPOCH).expect("system time before Unix epoch");
|
|
Timespec { sec: st.as_secs() as i64, nsec: st.subsec_nanos() as i32 }
|
|
}
|
|
|
|
/// Converts this timespec into the system's local time.
|
|
pub fn local(self) -> Tm {
|
|
let mut tm = Tm {
|
|
tm_sec: 0,
|
|
tm_min: 0,
|
|
tm_hour: 0,
|
|
tm_mday: 0,
|
|
tm_mon: 0,
|
|
tm_year: 0,
|
|
tm_wday: 0,
|
|
tm_yday: 0,
|
|
tm_isdst: 0,
|
|
tm_utcoff: 0,
|
|
tm_nsec: 0,
|
|
};
|
|
inner::time_to_local_tm(self.sec, &mut tm);
|
|
tm.tm_nsec = self.nsec;
|
|
tm
|
|
}
|
|
}
|
|
|
|
/// Holds a calendar date and time broken down into its components (year, month,
|
|
/// day, and so on), also called a broken-down time value.
|
|
// FIXME: use c_int instead of i32?
|
|
#[cfg(feature = "clock")]
|
|
#[repr(C)]
|
|
pub struct Tm {
|
|
/// Seconds after the minute - [0, 60]
|
|
pub tm_sec: i32,
|
|
|
|
/// Minutes after the hour - [0, 59]
|
|
pub tm_min: i32,
|
|
|
|
/// Hours after midnight - [0, 23]
|
|
pub tm_hour: i32,
|
|
|
|
/// Day of the month - [1, 31]
|
|
pub tm_mday: i32,
|
|
|
|
/// Months since January - [0, 11]
|
|
pub tm_mon: i32,
|
|
|
|
/// Years since 1900
|
|
pub tm_year: i32,
|
|
|
|
/// Days since Sunday - [0, 6]. 0 = Sunday, 1 = Monday, ..., 6 = Saturday.
|
|
pub tm_wday: i32,
|
|
|
|
/// Days since January 1 - [0, 365]
|
|
pub tm_yday: i32,
|
|
|
|
/// Daylight Saving Time flag.
|
|
///
|
|
/// This value is positive if Daylight Saving Time is in effect, zero if
|
|
/// Daylight Saving Time is not in effect, and negative if this information
|
|
/// is not available.
|
|
pub tm_isdst: i32,
|
|
|
|
/// Identifies the time zone that was used to compute this broken-down time
|
|
/// value, including any adjustment for Daylight Saving Time. This is the
|
|
/// number of seconds east of UTC. For example, for U.S. Pacific Daylight
|
|
/// Time, the value is `-7*60*60 = -25200`.
|
|
pub tm_utcoff: i32,
|
|
|
|
/// Nanoseconds after the second - [0, 10<sup>9</sup> - 1]
|
|
pub tm_nsec: i32,
|
|
}
|
|
|
|
impl Tm {
|
|
/// Convert time to the seconds from January 1, 1970
|
|
pub fn to_timespec(&self) -> Timespec {
|
|
let sec = match self.tm_utcoff {
|
|
0 => inner::utc_tm_to_time(self),
|
|
_ => inner::local_tm_to_time(self),
|
|
};
|
|
Timespec { sec: sec, nsec: self.tm_nsec }
|
|
}
|
|
}
|