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// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
//
// 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.
use super::Tm;
use libc::{self, time_t};
use std::io;
use std::mem;
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
extern "C" {
static timezone: time_t;
static altzone: time_t;
}
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
fn tzset() {
extern "C" {
fn tzset();
}
unsafe { tzset() }
}
fn rust_tm_to_tm(rust_tm: &Tm, tm: &mut libc::tm) {
tm.tm_sec = rust_tm.tm_sec;
tm.tm_min = rust_tm.tm_min;
tm.tm_hour = rust_tm.tm_hour;
tm.tm_mday = rust_tm.tm_mday;
tm.tm_mon = rust_tm.tm_mon;
tm.tm_year = rust_tm.tm_year;
tm.tm_wday = rust_tm.tm_wday;
tm.tm_yday = rust_tm.tm_yday;
tm.tm_isdst = rust_tm.tm_isdst;
}
fn tm_to_rust_tm(tm: &libc::tm, utcoff: i32, rust_tm: &mut Tm) {
rust_tm.tm_sec = tm.tm_sec;
rust_tm.tm_min = tm.tm_min;
rust_tm.tm_hour = tm.tm_hour;
rust_tm.tm_mday = tm.tm_mday;
rust_tm.tm_mon = tm.tm_mon;
rust_tm.tm_year = tm.tm_year;
rust_tm.tm_wday = tm.tm_wday;
rust_tm.tm_yday = tm.tm_yday;
rust_tm.tm_isdst = tm.tm_isdst;
rust_tm.tm_utcoff = utcoff;
}
#[cfg(any(target_os = "nacl", target_os = "solaris", target_os = "illumos"))]
unsafe fn timegm(tm: *mut libc::tm) -> time_t {
use std::env::{remove_var, set_var, var_os};
extern "C" {
fn tzset();
}
let ret;
let current_tz = var_os("TZ");
set_var("TZ", "UTC");
tzset();
ret = libc::mktime(tm);
if let Some(tz) = current_tz {
set_var("TZ", tz);
} else {
remove_var("TZ");
}
tzset();
ret
}
pub fn time_to_local_tm(sec: i64, tm: &mut Tm) {
unsafe {
let sec = sec as time_t;
let mut out = mem::zeroed();
if libc::localtime_r(&sec, &mut out).is_null() {
panic!("localtime_r failed: {}", io::Error::last_os_error());
}
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
let gmtoff = {
tzset();
// < 0 means we don't know; assume we're not in DST.
if out.tm_isdst == 0 {
// timezone is seconds west of UTC, tm_gmtoff is seconds east
-timezone
} else if out.tm_isdst > 0 {
-altzone
} else {
-timezone
}
};
#[cfg(not(any(target_os = "solaris", target_os = "illumos")))]
let gmtoff = out.tm_gmtoff;
tm_to_rust_tm(&out, gmtoff as i32, tm);
}
}
pub fn utc_tm_to_time(rust_tm: &Tm) -> i64 {
#[cfg(not(any(
all(target_os = "android", target_pointer_width = "32"),
target_os = "nacl",
target_os = "solaris",
target_os = "illumos"
)))]
use libc::timegm;
#[cfg(all(target_os = "android", target_pointer_width = "32"))]
use libc::timegm64 as timegm;
let mut tm = unsafe { mem::zeroed() };
rust_tm_to_tm(rust_tm, &mut tm);
unsafe { timegm(&mut tm) as i64 }
}
pub fn local_tm_to_time(rust_tm: &Tm) -> i64 {
let mut tm = unsafe { mem::zeroed() };
rust_tm_to_tm(rust_tm, &mut tm);
unsafe { libc::mktime(&mut tm) as i64 }
}