mirror of
https://github.com/chronotope/chrono.git
synced 2025-09-28 05:21:39 +00:00
Only implement the offset_from_ methods on Local
This commit is contained in:
Paul Dicker
Dirkjan Ochtman
parent
7fb3e5921c
commit
2b7a068be8
@ -8,7 +8,7 @@ use rkyv::{Archive, Deserialize, Serialize};
|
||||
|
||||
use super::fixed::FixedOffset;
|
||||
use super::{LocalResult, TimeZone};
|
||||
use crate::naive::{NaiveDate, NaiveDateTime};
|
||||
use crate::naive::{NaiveDate, NaiveDateTime, NaiveTime};
|
||||
#[allow(deprecated)]
|
||||
use crate::Date;
|
||||
use crate::{DateTime, Utc};
|
||||
@ -104,48 +104,45 @@ impl TimeZone for Local {
|
||||
Local
|
||||
}
|
||||
|
||||
// they are easier to define in terms of the finished date and time unlike other offsets
|
||||
#[allow(deprecated)]
|
||||
fn offset_from_local_date(&self, local: &NaiveDate) -> LocalResult<FixedOffset> {
|
||||
self.from_local_date(local).map(|date| *date.offset())
|
||||
// Get the offset at local midnight.
|
||||
self.offset_from_local_datetime(&local.and_time(NaiveTime::MIN))
|
||||
}
|
||||
|
||||
#[cfg(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
))]
|
||||
fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
self.from_local_datetime(local).map(|datetime| *datetime.offset())
|
||||
let offset = js_sys::Date::new_0().get_timezone_offset();
|
||||
LocalResult::Single(FixedOffset::west_opt((offset as i32) * 60).unwrap())
|
||||
}
|
||||
|
||||
#[cfg(not(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
)))]
|
||||
fn offset_from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
inner::offset_from_local_datetime(local)
|
||||
}
|
||||
|
||||
#[allow(deprecated)]
|
||||
fn offset_from_utc_date(&self, utc: &NaiveDate) -> FixedOffset {
|
||||
*self.from_utc_date(utc).offset()
|
||||
// Get the offset at midnight.
|
||||
self.offset_from_utc_datetime(&utc.and_time(NaiveTime::MIN))
|
||||
}
|
||||
|
||||
#[cfg(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
))]
|
||||
fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> FixedOffset {
|
||||
*self.from_utc_datetime(utc).offset()
|
||||
}
|
||||
|
||||
// override them for avoiding redundant works
|
||||
#[allow(deprecated)]
|
||||
fn from_local_date(&self, local: &NaiveDate) -> LocalResult<Date<Local>> {
|
||||
// this sounds very strange, but required for keeping `TimeZone::ymd` sane.
|
||||
// in the other words, we use the offset at the local midnight
|
||||
// but keep the actual date unaltered (much like `FixedOffset`).
|
||||
let midnight = self.from_local_datetime(&local.and_hms_opt(0, 0, 0).unwrap());
|
||||
midnight.map(|datetime| Date::from_utc(*local, *datetime.offset()))
|
||||
}
|
||||
|
||||
#[cfg(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
))]
|
||||
fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<DateTime<Local>> {
|
||||
let mut local = local.clone();
|
||||
// Get the offset from the js runtime
|
||||
let offset =
|
||||
FixedOffset::west_opt((js_sys::Date::new_0().get_timezone_offset() as i32) * 60)
|
||||
.unwrap();
|
||||
local -= crate::Duration::seconds(offset.local_minus_utc() as i64);
|
||||
LocalResult::Single(DateTime::from_utc(local, offset))
|
||||
let offset = js_sys::Date::new_0().get_timezone_offset();
|
||||
LocalResult::Single(FixedOffset::west_opt((offset as i32) * 60).unwrap())
|
||||
}
|
||||
|
||||
#[cfg(not(all(
|
||||
@ -153,38 +150,8 @@ impl TimeZone for Local {
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
)))]
|
||||
fn from_local_datetime(&self, local: &NaiveDateTime) -> LocalResult<DateTime<Local>> {
|
||||
inner::naive_to_local(local, true)
|
||||
}
|
||||
|
||||
#[allow(deprecated)]
|
||||
fn from_utc_date(&self, utc: &NaiveDate) -> Date<Local> {
|
||||
let midnight = self.from_utc_datetime(&utc.and_hms_opt(0, 0, 0).unwrap());
|
||||
Date::from_utc(*utc, *midnight.offset())
|
||||
}
|
||||
|
||||
#[cfg(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
))]
|
||||
fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime<Local> {
|
||||
// Get the offset from the js runtime
|
||||
let offset =
|
||||
FixedOffset::west_opt((js_sys::Date::new_0().get_timezone_offset() as i32) * 60)
|
||||
.unwrap();
|
||||
DateTime::from_utc(*utc, offset)
|
||||
}
|
||||
|
||||
#[cfg(not(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
)))]
|
||||
fn from_utc_datetime(&self, utc: &NaiveDateTime) -> DateTime<Local> {
|
||||
// this is OK to unwrap as getting local time from a UTC
|
||||
// timestamp is never ambiguous
|
||||
inner::naive_to_local(utc, false).unwrap()
|
||||
fn offset_from_utc_datetime(&self, utc: &NaiveDateTime) -> FixedOffset {
|
||||
inner::offset_from_utc_datetime(utc).unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -8,218 +8,12 @@
|
||||
// option. This file may not be copied, modified, or distributed
|
||||
// except according to those terms.
|
||||
|
||||
use std::time::{SystemTime, UNIX_EPOCH};
|
||||
use crate::{FixedOffset, LocalResult, NaiveDateTime};
|
||||
|
||||
use super::{FixedOffset, Local};
|
||||
use crate::{DateTime, Datelike, LocalResult, NaiveDate, NaiveDateTime, NaiveTime, Timelike};
|
||||
|
||||
/// Converts a local `NaiveDateTime` to the `time::Timespec`.
|
||||
#[cfg(not(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
)))]
|
||||
pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
|
||||
let tm = Tm {
|
||||
tm_sec: d.second() as i32,
|
||||
tm_min: d.minute() as i32,
|
||||
tm_hour: d.hour() as i32,
|
||||
tm_mday: d.day() as i32,
|
||||
tm_mon: d.month0() as i32, // yes, C is that strange...
|
||||
tm_year: d.year() - 1900, // this doesn't underflow, we know that d is `NaiveDateTime`.
|
||||
tm_wday: 0, // to_local ignores this
|
||||
tm_yday: 0, // and this
|
||||
tm_isdst: -1,
|
||||
// This seems pretty fake?
|
||||
tm_utcoff: if local { 1 } else { 0 },
|
||||
// do not set this, OS APIs are heavily inconsistent in terms of leap second handling
|
||||
tm_nsec: 0,
|
||||
};
|
||||
|
||||
let spec = Timespec {
|
||||
sec: match local {
|
||||
false => utc_tm_to_time(&tm),
|
||||
true => local_tm_to_time(&tm),
|
||||
},
|
||||
nsec: tm.tm_nsec,
|
||||
};
|
||||
|
||||
// Adjust for leap seconds
|
||||
let mut tm = spec.local();
|
||||
assert_eq!(tm.tm_nsec, 0);
|
||||
tm.tm_nsec = d.nanosecond() as i32;
|
||||
|
||||
LocalResult::Single(tm_to_datetime(tm))
|
||||
pub(super) fn offset_from_utc_datetime(_utc_time: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
LocalResult::Single(FixedOffset::east_opt(0).unwrap())
|
||||
}
|
||||
|
||||
/// Converts a `time::Tm` struct into the timezone-aware `DateTime`.
|
||||
/// This assumes that `time` is working correctly, i.e. any error is fatal.
|
||||
#[cfg(not(all(
|
||||
target_arch = "wasm32",
|
||||
feature = "wasmbind",
|
||||
not(any(target_os = "emscripten", target_os = "wasi"))
|
||||
)))]
|
||||
fn tm_to_datetime(mut tm: Tm) -> DateTime<Local> {
|
||||
if tm.tm_sec >= 60 {
|
||||
tm.tm_nsec += (tm.tm_sec - 59) * 1_000_000_000;
|
||||
tm.tm_sec = 59;
|
||||
}
|
||||
|
||||
let date = NaiveDate::from_yo(tm.tm_year + 1900, tm.tm_yday as u32 + 1);
|
||||
let time = NaiveTime::from_hms_nano(
|
||||
tm.tm_hour as u32,
|
||||
tm.tm_min as u32,
|
||||
tm.tm_sec as u32,
|
||||
tm.tm_nsec as u32,
|
||||
);
|
||||
|
||||
let offset = FixedOffset::east_opt(tm.tm_utcoff).unwrap();
|
||||
DateTime::from_utc(date.and_time(time) - offset, offset)
|
||||
}
|
||||
|
||||
/// 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}.
|
||||
struct Timespec {
|
||||
sec: i64,
|
||||
nsec: i32,
|
||||
}
|
||||
|
||||
impl Timespec {
|
||||
/// Converts this timespec into the system's local time.
|
||||
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,
|
||||
};
|
||||
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?
|
||||
#[repr(C)]
|
||||
pub(super) struct Tm {
|
||||
/// Seconds after the minute - [0, 60]
|
||||
tm_sec: i32,
|
||||
|
||||
/// Minutes after the hour - [0, 59]
|
||||
tm_min: i32,
|
||||
|
||||
/// Hours after midnight - [0, 23]
|
||||
tm_hour: i32,
|
||||
|
||||
/// Day of the month - [1, 31]
|
||||
tm_mday: i32,
|
||||
|
||||
/// Months since January - [0, 11]
|
||||
tm_mon: i32,
|
||||
|
||||
/// Years since 1900
|
||||
tm_year: i32,
|
||||
|
||||
/// Days since Sunday - [0, 6]. 0 = Sunday, 1 = Monday, ..., 6 = Saturday.
|
||||
tm_wday: i32,
|
||||
|
||||
/// Days since January 1 - [0, 365]
|
||||
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.
|
||||
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`.
|
||||
tm_utcoff: i32,
|
||||
|
||||
/// Nanoseconds after the second - [0, 10<sup>9</sup> - 1]
|
||||
tm_nsec: i32,
|
||||
}
|
||||
|
||||
fn time_to_tm(ts: i64, tm: &mut Tm) {
|
||||
let leapyear = |year| -> bool { year % 4 == 0 && (year % 100 != 0 || year % 400 == 0) };
|
||||
|
||||
static YTAB: [[i64; 12]; 2] = [
|
||||
[31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
|
||||
[31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31],
|
||||
];
|
||||
|
||||
let mut year = 1970;
|
||||
|
||||
let dayclock = ts % 86400;
|
||||
let mut dayno = ts / 86400;
|
||||
|
||||
tm.tm_sec = (dayclock % 60) as i32;
|
||||
tm.tm_min = ((dayclock % 3600) / 60) as i32;
|
||||
tm.tm_hour = (dayclock / 3600) as i32;
|
||||
tm.tm_wday = ((dayno + 4) % 7) as i32;
|
||||
loop {
|
||||
let yearsize = if leapyear(year) { 366 } else { 365 };
|
||||
if dayno >= yearsize {
|
||||
dayno -= yearsize;
|
||||
year += 1;
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
tm.tm_year = (year - 1900) as i32;
|
||||
tm.tm_yday = dayno as i32;
|
||||
let mut mon = 0;
|
||||
while dayno >= YTAB[if leapyear(year) { 1 } else { 0 }][mon] {
|
||||
dayno -= YTAB[if leapyear(year) { 1 } else { 0 }][mon];
|
||||
mon += 1;
|
||||
}
|
||||
tm.tm_mon = mon as i32;
|
||||
tm.tm_mday = dayno as i32 + 1;
|
||||
tm.tm_isdst = 0;
|
||||
}
|
||||
|
||||
fn tm_to_time(tm: &Tm) -> i64 {
|
||||
let mut y = tm.tm_year as i64 + 1900;
|
||||
let mut m = tm.tm_mon as i64 + 1;
|
||||
if m <= 2 {
|
||||
y -= 1;
|
||||
m += 12;
|
||||
}
|
||||
let d = tm.tm_mday as i64;
|
||||
let h = tm.tm_hour as i64;
|
||||
let mi = tm.tm_min as i64;
|
||||
let s = tm.tm_sec as i64;
|
||||
(365 * y + y / 4 - y / 100 + y / 400 + 3 * (m + 1) / 5 + 30 * m + d - 719561) * 86400
|
||||
+ 3600 * h
|
||||
+ 60 * mi
|
||||
+ s
|
||||
}
|
||||
|
||||
pub(super) fn time_to_local_tm(sec: i64, tm: &mut Tm) {
|
||||
// FIXME: Add timezone logic
|
||||
time_to_tm(sec, tm);
|
||||
}
|
||||
|
||||
pub(super) fn utc_tm_to_time(tm: &Tm) -> i64 {
|
||||
tm_to_time(tm)
|
||||
}
|
||||
|
||||
pub(super) fn local_tm_to_time(tm: &Tm) -> i64 {
|
||||
// FIXME: Add timezone logic
|
||||
tm_to_time(tm)
|
||||
pub(super) fn offset_from_local_datetime(_local_time: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
LocalResult::Single(FixedOffset::east_opt(0).unwrap())
|
||||
}
|
||||
|
||||
@ -11,10 +11,18 @@
|
||||
use std::{cell::RefCell, collections::hash_map, env, fs, hash::Hasher, time::SystemTime};
|
||||
|
||||
use super::tz_info::TimeZone;
|
||||
use super::{DateTime, FixedOffset, Local, NaiveDateTime};
|
||||
use super::{FixedOffset, NaiveDateTime};
|
||||
use crate::{Datelike, LocalResult};
|
||||
|
||||
pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
|
||||
pub(super) fn offset_from_utc_datetime(utc: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
offset(utc, false)
|
||||
}
|
||||
|
||||
pub(super) fn offset_from_local_datetime(local: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
offset(local, true)
|
||||
}
|
||||
|
||||
fn offset(d: &NaiveDateTime, local: bool) -> LocalResult<FixedOffset> {
|
||||
TZ_INFO.with(|maybe_cache| {
|
||||
maybe_cache.borrow_mut().get_or_insert_with(Cache::default).offset(*d, local)
|
||||
})
|
||||
@ -96,7 +104,7 @@ fn current_zone(var: Option<&str>) -> TimeZone {
|
||||
}
|
||||
|
||||
impl Cache {
|
||||
fn offset(&mut self, d: NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
|
||||
fn offset(&mut self, d: NaiveDateTime, local: bool) -> LocalResult<FixedOffset> {
|
||||
let now = SystemTime::now();
|
||||
|
||||
match now.duration_since(self.last_checked) {
|
||||
@ -148,32 +156,16 @@ impl Cache {
|
||||
.offset();
|
||||
|
||||
return match FixedOffset::east_opt(offset) {
|
||||
Some(offset) => LocalResult::Single(DateTime::from_utc(d, offset)),
|
||||
Some(offset) => LocalResult::Single(offset),
|
||||
None => LocalResult::None,
|
||||
};
|
||||
}
|
||||
|
||||
// we pass through the year as the year of a local point in time must either be valid in that locale, or
|
||||
// the entire time was skipped in which case we will return LocalResult::None anywa.
|
||||
match self
|
||||
.zone
|
||||
// the entire time was skipped in which case we will return LocalResult::None anyway.
|
||||
self.zone
|
||||
.find_local_time_type_from_local(d.timestamp(), d.year())
|
||||
.expect("unable to select local time type")
|
||||
{
|
||||
LocalResult::None => LocalResult::None,
|
||||
LocalResult::Ambiguous(early, late) => {
|
||||
let early_offset = FixedOffset::east_opt(early.offset()).unwrap();
|
||||
let late_offset = FixedOffset::east_opt(late.offset()).unwrap();
|
||||
|
||||
LocalResult::Ambiguous(
|
||||
DateTime::from_utc(d - early_offset, early_offset),
|
||||
DateTime::from_utc(d - late_offset, late_offset),
|
||||
)
|
||||
}
|
||||
LocalResult::Single(tt) => {
|
||||
let offset = FixedOffset::east_opt(tt.offset()).unwrap();
|
||||
LocalResult::Single(DateTime::from_utc(d - offset, offset))
|
||||
}
|
||||
}
|
||||
.map(|o| FixedOffset::east_opt(o.offset()).unwrap())
|
||||
}
|
||||
}
|
||||
|
||||
@ -19,8 +19,8 @@ use winapi::um::timezoneapi::{
|
||||
SystemTimeToFileTime, SystemTimeToTzSpecificLocalTime, TzSpecificLocalTimeToSystemTime,
|
||||
};
|
||||
|
||||
use super::{FixedOffset, Local};
|
||||
use crate::{DateTime, Datelike, LocalResult, NaiveDate, NaiveDateTime, NaiveTime, Timelike};
|
||||
use super::FixedOffset;
|
||||
use crate::{Datelike, LocalResult, NaiveDateTime, Timelike};
|
||||
|
||||
/// This macro calls a Windows API FFI and checks whether the function errored with the provided error_id. If an error returns,
|
||||
/// the macro will return an `Error::last_os_error()`.
|
||||
@ -39,54 +39,43 @@ macro_rules! windows_sys_call {
|
||||
const HECTONANOSECS_IN_SEC: i64 = 10_000_000;
|
||||
const HECTONANOSEC_TO_UNIX_EPOCH: i64 = 11_644_473_600 * HECTONANOSECS_IN_SEC;
|
||||
|
||||
pub(super) fn offset_from_utc_datetime(utc: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
offset(utc, false)
|
||||
}
|
||||
|
||||
pub(super) fn offset_from_local_datetime(local: &NaiveDateTime) -> LocalResult<FixedOffset> {
|
||||
offset(local, true)
|
||||
}
|
||||
|
||||
/// Converts a local `NaiveDateTime` to the `time::Timespec`.
|
||||
pub(super) fn naive_to_local(d: &NaiveDateTime, local: bool) -> LocalResult<DateTime<Local>> {
|
||||
pub(super) fn offset(d: &NaiveDateTime, local: bool) -> LocalResult<FixedOffset> {
|
||||
let naive_sys_time = system_time_from_naive_date_time(d);
|
||||
|
||||
let local_sys_time = match local {
|
||||
false => LocalSysTime::from_utc_time(naive_sys_time),
|
||||
true => LocalSysTime::from_local_time(naive_sys_time),
|
||||
false => from_utc_time(naive_sys_time),
|
||||
true => from_local_time(naive_sys_time),
|
||||
};
|
||||
|
||||
if let Ok(local) = local_sys_time {
|
||||
return LocalResult::Single(local.datetime());
|
||||
if let Ok(offset) = local_sys_time {
|
||||
return LocalResult::Single(offset);
|
||||
}
|
||||
LocalResult::None
|
||||
}
|
||||
|
||||
struct LocalSysTime {
|
||||
inner: SYSTEMTIME,
|
||||
offset: i32,
|
||||
fn from_utc_time(utc_time: SYSTEMTIME) -> Result<FixedOffset, Error> {
|
||||
let local_time = utc_to_local_time(&utc_time)?;
|
||||
let utc_secs = system_time_as_unix_seconds(&utc_time)?;
|
||||
let local_secs = system_time_as_unix_seconds(&local_time)?;
|
||||
let offset = (local_secs - utc_secs) as i32;
|
||||
Ok(FixedOffset::east_opt(offset).unwrap())
|
||||
}
|
||||
|
||||
impl LocalSysTime {
|
||||
fn from_utc_time(utc_time: SYSTEMTIME) -> Result<Self, Error> {
|
||||
let local_time = utc_to_local_time(&utc_time)?;
|
||||
let utc_secs = system_time_as_unix_seconds(&utc_time)?;
|
||||
let local_secs = system_time_as_unix_seconds(&local_time)?;
|
||||
let offset = (local_secs - utc_secs) as i32;
|
||||
Ok(Self { inner: local_time, offset })
|
||||
}
|
||||
|
||||
fn from_local_time(local_time: SYSTEMTIME) -> Result<Self, Error> {
|
||||
let utc_time = local_to_utc_time(&local_time)?;
|
||||
let utc_secs = system_time_as_unix_seconds(&utc_time)?;
|
||||
let local_secs = system_time_as_unix_seconds(&local_time)?;
|
||||
let offset = (local_secs - utc_secs) as i32;
|
||||
Ok(Self { inner: local_time, offset })
|
||||
}
|
||||
|
||||
fn datetime(self) -> DateTime<Local> {
|
||||
let st = self.inner;
|
||||
|
||||
let date =
|
||||
NaiveDate::from_ymd_opt(st.wYear as i32, st.wMonth as u32, st.wDay as u32).unwrap();
|
||||
let time =
|
||||
NaiveTime::from_hms_opt(st.wHour as u32, st.wMinute as u32, st.wSecond as u32).unwrap();
|
||||
|
||||
let offset = FixedOffset::east_opt(self.offset).unwrap();
|
||||
DateTime::from_utc(date.and_time(time) - offset, offset)
|
||||
}
|
||||
fn from_local_time(local_time: SYSTEMTIME) -> Result<FixedOffset, Error> {
|
||||
let utc_time = local_to_utc_time(&local_time)?;
|
||||
let utc_secs = system_time_as_unix_seconds(&utc_time)?;
|
||||
let local_secs = system_time_as_unix_seconds(&local_time)?;
|
||||
let offset = (local_secs - utc_secs) as i32;
|
||||
Ok(FixedOffset::east_opt(offset).unwrap())
|
||||
}
|
||||
|
||||
fn system_time_from_naive_date_time(dt: &NaiveDateTime) -> SYSTEMTIME {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user