diff options
Diffstat (limited to 'third_party/rust/time-0.1.45/src')
| -rw-r--r-- | third_party/rust/time-0.1.45/src/display.rs | 260 | ||||
| -rw-r--r-- | third_party/rust/time-0.1.45/src/duration.rs | 655 | ||||
| -rw-r--r-- | third_party/rust/time-0.1.45/src/lib.rs | 1283 | ||||
| -rw-r--r-- | third_party/rust/time-0.1.45/src/parse.rs | 395 | ||||
| -rw-r--r-- | third_party/rust/time-0.1.45/src/sys.rs | 996 |
5 files changed, 3589 insertions, 0 deletions
diff --git a/third_party/rust/time-0.1.45/src/display.rs b/third_party/rust/time-0.1.45/src/display.rs new file mode 100644 index 0000000000..705b43078a --- /dev/null +++ b/third_party/rust/time-0.1.45/src/display.rs @@ -0,0 +1,260 @@ +use std::fmt::{self, Write}; + +use super::{TmFmt, Tm, Fmt}; + +impl<'a> fmt::Display for TmFmt<'a> { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.format { + Fmt::Str(ref s) => { + let mut chars = s.chars(); + while let Some(ch) = chars.next() { + if ch == '%' { + // we've already validated that % always precedes + // another char + parse_type(fmt, chars.next().unwrap(), self.tm)?; + } else { + fmt.write_char(ch)?; + } + } + + Ok(()) + } + Fmt::Ctime => self.tm.to_local().asctime().fmt(fmt), + Fmt::Rfc3339 => { + if self.tm.tm_utcoff == 0 { + TmFmt { + tm: self.tm, + format: Fmt::Str("%Y-%m-%dT%H:%M:%SZ"), + }.fmt(fmt) + } else { + let s = TmFmt { + tm: self.tm, + format: Fmt::Str("%Y-%m-%dT%H:%M:%S"), + }; + let sign = if self.tm.tm_utcoff > 0 { '+' } else { '-' }; + let mut m = abs(self.tm.tm_utcoff) / 60; + let h = m / 60; + m -= h * 60; + write!(fmt, "{}{}{:02}:{:02}", s, sign, h, m) + } + } + } + } +} + +fn is_leap_year(year: i32) -> bool { + (year % 4 == 0) && ((year % 100 != 0) || (year % 400 == 0)) +} + +fn days_in_year(year: i32) -> i32 { + if is_leap_year(year) { 366 } + else { 365 } +} + +fn iso_week_days(yday: i32, wday: i32) -> i32 { + /* The number of days from the first day of the first ISO week of this + * year to the year day YDAY with week day WDAY. + * ISO weeks start on Monday. The first ISO week has the year's first + * Thursday. + * YDAY may be as small as yday_minimum. + */ + let iso_week_start_wday: i32 = 1; /* Monday */ + let iso_week1_wday: i32 = 4; /* Thursday */ + let yday_minimum: i32 = 366; + /* Add enough to the first operand of % to make it nonnegative. */ + let big_enough_multiple_of_7: i32 = (yday_minimum / 7 + 2) * 7; + + yday - (yday - wday + iso_week1_wday + big_enough_multiple_of_7) % 7 + + iso_week1_wday - iso_week_start_wday +} + +fn iso_week(fmt: &mut fmt::Formatter, ch:char, tm: &Tm) -> fmt::Result { + let mut year = tm.tm_year + 1900; + let mut days = iso_week_days(tm.tm_yday, tm.tm_wday); + + if days < 0 { + /* This ISO week belongs to the previous year. */ + year -= 1; + days = iso_week_days(tm.tm_yday + (days_in_year(year)), tm.tm_wday); + } else { + let d = iso_week_days(tm.tm_yday - (days_in_year(year)), + tm.tm_wday); + if 0 <= d { + /* This ISO week belongs to the next year. */ + year += 1; + days = d; + } + } + + match ch { + 'G' => write!(fmt, "{}", year), + 'g' => write!(fmt, "{:02}", (year % 100 + 100) % 100), + 'V' => write!(fmt, "{:02}", days / 7 + 1), + _ => Ok(()) + } +} + +fn parse_type(fmt: &mut fmt::Formatter, ch: char, tm: &Tm) -> fmt::Result { + match ch { + 'A' => fmt.write_str(match tm.tm_wday { + 0 => "Sunday", + 1 => "Monday", + 2 => "Tuesday", + 3 => "Wednesday", + 4 => "Thursday", + 5 => "Friday", + 6 => "Saturday", + _ => unreachable!(), + }), + 'a' => fmt.write_str(match tm.tm_wday { + 0 => "Sun", + 1 => "Mon", + 2 => "Tue", + 3 => "Wed", + 4 => "Thu", + 5 => "Fri", + 6 => "Sat", + _ => unreachable!(), + }), + 'B' => fmt.write_str(match tm.tm_mon { + 0 => "January", + 1 => "February", + 2 => "March", + 3 => "April", + 4 => "May", + 5 => "June", + 6 => "July", + 7 => "August", + 8 => "September", + 9 => "October", + 10 => "November", + 11 => "December", + _ => unreachable!(), + }), + 'b' | 'h' => fmt.write_str(match tm.tm_mon { + 0 => "Jan", + 1 => "Feb", + 2 => "Mar", + 3 => "Apr", + 4 => "May", + 5 => "Jun", + 6 => "Jul", + 7 => "Aug", + 8 => "Sep", + 9 => "Oct", + 10 => "Nov", + 11 => "Dec", + _ => unreachable!(), + }), + 'C' => write!(fmt, "{:02}", (tm.tm_year + 1900) / 100), + 'c' => { + parse_type(fmt, 'a', tm)?; + fmt.write_str(" ")?; + parse_type(fmt, 'b', tm)?; + fmt.write_str(" ")?; + parse_type(fmt, 'e', tm)?; + fmt.write_str(" ")?; + parse_type(fmt, 'T', tm)?; + fmt.write_str(" ")?; + parse_type(fmt, 'Y', tm) + } + 'D' | 'x' => { + parse_type(fmt, 'm', tm)?; + fmt.write_str("/")?; + parse_type(fmt, 'd', tm)?; + fmt.write_str("/")?; + parse_type(fmt, 'y', tm) + } + 'd' => write!(fmt, "{:02}", tm.tm_mday), + 'e' => write!(fmt, "{:2}", tm.tm_mday), + 'f' => write!(fmt, "{:09}", tm.tm_nsec), + 'F' => { + parse_type(fmt, 'Y', tm)?; + fmt.write_str("-")?; + parse_type(fmt, 'm', tm)?; + fmt.write_str("-")?; + parse_type(fmt, 'd', tm) + } + 'G' => iso_week(fmt, 'G', tm), + 'g' => iso_week(fmt, 'g', tm), + 'H' => write!(fmt, "{:02}", tm.tm_hour), + 'I' => { + let mut h = tm.tm_hour; + if h == 0 { h = 12 } + if h > 12 { h -= 12 } + write!(fmt, "{:02}", h) + } + 'j' => write!(fmt, "{:03}", tm.tm_yday + 1), + 'k' => write!(fmt, "{:2}", tm.tm_hour), + 'l' => { + let mut h = tm.tm_hour; + if h == 0 { h = 12 } + if h > 12 { h -= 12 } + write!(fmt, "{:2}", h) + } + 'M' => write!(fmt, "{:02}", tm.tm_min), + 'm' => write!(fmt, "{:02}", tm.tm_mon + 1), + 'n' => fmt.write_str("\n"), + 'P' => fmt.write_str(if tm.tm_hour < 12 { "am" } else { "pm" }), + 'p' => fmt.write_str(if (tm.tm_hour) < 12 { "AM" } else { "PM" }), + 'R' => { + parse_type(fmt, 'H', tm)?; + fmt.write_str(":")?; + parse_type(fmt, 'M', tm) + } + 'r' => { + parse_type(fmt, 'I', tm)?; + fmt.write_str(":")?; + parse_type(fmt, 'M', tm)?; + fmt.write_str(":")?; + parse_type(fmt, 'S', tm)?; + fmt.write_str(" ")?; + parse_type(fmt, 'p', tm) + } + 'S' => write!(fmt, "{:02}", tm.tm_sec), + 's' => write!(fmt, "{}", tm.to_timespec().sec), + 'T' | 'X' => { + parse_type(fmt, 'H', tm)?; + fmt.write_str(":")?; + parse_type(fmt, 'M', tm)?; + fmt.write_str(":")?; + parse_type(fmt, 'S', tm) + } + 't' => fmt.write_str("\t"), + 'U' => write!(fmt, "{:02}", (tm.tm_yday - tm.tm_wday + 7) / 7), + 'u' => { + let i = tm.tm_wday; + write!(fmt, "{}", (if i == 0 { 7 } else { i })) + } + 'V' => iso_week(fmt, 'V', tm), + 'v' => { + parse_type(fmt, 'e', tm)?; + fmt.write_str("-")?; + parse_type(fmt, 'b', tm)?; + fmt.write_str("-")?; + parse_type(fmt, 'Y', tm) + } + 'W' => { + write!(fmt, "{:02}", (tm.tm_yday - (tm.tm_wday - 1 + 7) % 7 + 7) / 7) + } + 'w' => write!(fmt, "{}", tm.tm_wday), + 'Y' => write!(fmt, "{}", tm.tm_year + 1900), + 'y' => write!(fmt, "{:02}", (tm.tm_year + 1900) % 100), + // FIXME (#2350): support locale + 'Z' => fmt.write_str(if tm.tm_utcoff == 0 { "UTC"} else { "" }), + 'z' => { + let sign = if tm.tm_utcoff > 0 { '+' } else { '-' }; + let mut m = abs(tm.tm_utcoff) / 60; + let h = m / 60; + m -= h * 60; + write!(fmt, "{}{:02}{:02}", sign, h, m) + } + '+' => write!(fmt, "{}", tm.rfc3339()), + '%' => fmt.write_str("%"), + _ => unreachable!(), + } +} + +fn abs(i: i32) -> i32 { + if i < 0 {-i} else {i} +} diff --git a/third_party/rust/time-0.1.45/src/duration.rs b/third_party/rust/time-0.1.45/src/duration.rs new file mode 100644 index 0000000000..b33206c1e6 --- /dev/null +++ b/third_party/rust/time-0.1.45/src/duration.rs @@ -0,0 +1,655 @@ +// 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. + +//! Temporal quantification + +use std::{fmt, i64}; +use std::error::Error; +use std::ops::{Add, Sub, Mul, Div, Neg, FnOnce}; +use std::time::Duration as StdDuration; + +/// The number of nanoseconds in a microsecond. +const NANOS_PER_MICRO: i32 = 1000; +/// The number of nanoseconds in a millisecond. +const NANOS_PER_MILLI: i32 = 1000_000; +/// The number of nanoseconds in seconds. +const NANOS_PER_SEC: i32 = 1_000_000_000; +/// The number of microseconds per second. +const MICROS_PER_SEC: i64 = 1000_000; +/// The number of milliseconds per second. +const MILLIS_PER_SEC: i64 = 1000; +/// The number of seconds in a minute. +const SECS_PER_MINUTE: i64 = 60; +/// The number of seconds in an hour. +const SECS_PER_HOUR: i64 = 3600; +/// The number of (non-leap) seconds in days. +const SECS_PER_DAY: i64 = 86400; +/// The number of (non-leap) seconds in a week. +const SECS_PER_WEEK: i64 = 604800; + +macro_rules! try_opt { + ($e:expr) => (match $e { Some(v) => v, None => return None }) +} + + +/// ISO 8601 time duration with nanosecond precision. +/// This also allows for the negative duration; see individual methods for details. +#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] +pub struct Duration { + secs: i64, + nanos: i32, // Always 0 <= nanos < NANOS_PER_SEC +} + +/// The minimum possible `Duration`: `i64::MIN` milliseconds. +pub const MIN: Duration = Duration { + secs: i64::MIN / MILLIS_PER_SEC - 1, + nanos: NANOS_PER_SEC + (i64::MIN % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI +}; + +/// The maximum possible `Duration`: `i64::MAX` milliseconds. +pub const MAX: Duration = Duration { + secs: i64::MAX / MILLIS_PER_SEC, + nanos: (i64::MAX % MILLIS_PER_SEC) as i32 * NANOS_PER_MILLI +}; + +impl Duration { + /// Makes a new `Duration` with given number of weeks. + /// Equivalent to `Duration::seconds(weeks * 7 * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn weeks(weeks: i64) -> Duration { + let secs = weeks.checked_mul(SECS_PER_WEEK).expect("Duration::weeks out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of days. + /// Equivalent to `Duration::seconds(days * 24 * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn days(days: i64) -> Duration { + let secs = days.checked_mul(SECS_PER_DAY).expect("Duration::days out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of hours. + /// Equivalent to `Duration::seconds(hours * 60 * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn hours(hours: i64) -> Duration { + let secs = hours.checked_mul(SECS_PER_HOUR).expect("Duration::hours out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of minutes. + /// Equivalent to `Duration::seconds(minutes * 60)` with overflow checks. + /// Panics when the duration is out of bounds. + #[inline] + pub fn minutes(minutes: i64) -> Duration { + let secs = minutes.checked_mul(SECS_PER_MINUTE).expect("Duration::minutes out of bounds"); + Duration::seconds(secs) + } + + /// Makes a new `Duration` with given number of seconds. + /// Panics when the duration is more than `i64::MAX` milliseconds + /// or less than `i64::MIN` milliseconds. + #[inline] + pub fn seconds(seconds: i64) -> Duration { + let d = Duration { secs: seconds, nanos: 0 }; + if d < MIN || d > MAX { + panic!("Duration::seconds out of bounds"); + } + d + } + + /// Makes a new `Duration` with given number of milliseconds. + #[inline] + pub fn milliseconds(milliseconds: i64) -> Duration { + let (secs, millis) = div_mod_floor_64(milliseconds, MILLIS_PER_SEC); + let nanos = millis as i32 * NANOS_PER_MILLI; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of microseconds. + #[inline] + pub fn microseconds(microseconds: i64) -> Duration { + let (secs, micros) = div_mod_floor_64(microseconds, MICROS_PER_SEC); + let nanos = micros as i32 * NANOS_PER_MICRO; + Duration { secs: secs, nanos: nanos } + } + + /// Makes a new `Duration` with given number of nanoseconds. + #[inline] + pub fn nanoseconds(nanos: i64) -> Duration { + let (secs, nanos) = div_mod_floor_64(nanos, NANOS_PER_SEC as i64); + Duration { secs: secs, nanos: nanos as i32 } + } + + /// Runs a closure, returning the duration of time it took to run the + /// closure. + pub fn span<F>(f: F) -> Duration where F: FnOnce() { + let before = super::precise_time_ns(); + f(); + Duration::nanoseconds((super::precise_time_ns() - before) as i64) + } + + /// Returns the total number of whole weeks in the duration. + #[inline] + pub fn num_weeks(&self) -> i64 { + self.num_days() / 7 + } + + /// Returns the total number of whole days in the duration. + pub fn num_days(&self) -> i64 { + self.num_seconds() / SECS_PER_DAY + } + + /// Returns the total number of whole hours in the duration. + #[inline] + pub fn num_hours(&self) -> i64 { + self.num_seconds() / SECS_PER_HOUR + } + + /// Returns the total number of whole minutes in the duration. + #[inline] + pub fn num_minutes(&self) -> i64 { + self.num_seconds() / SECS_PER_MINUTE + } + + /// Returns the total number of whole seconds in the duration. + pub fn num_seconds(&self) -> i64 { + // If secs is negative, nanos should be subtracted from the duration. + if self.secs < 0 && self.nanos > 0 { + self.secs + 1 + } else { + self.secs + } + } + + /// Returns the number of nanoseconds such that + /// `nanos_mod_sec() + num_seconds() * NANOS_PER_SEC` is the total number of + /// nanoseconds in the duration. + fn nanos_mod_sec(&self) -> i32 { + if self.secs < 0 && self.nanos > 0 { + self.nanos - NANOS_PER_SEC + } else { + self.nanos + } + } + + /// Returns the total number of whole milliseconds in the duration, + pub fn num_milliseconds(&self) -> i64 { + // A proper Duration will not overflow, because MIN and MAX are defined + // such that the range is exactly i64 milliseconds. + let secs_part = self.num_seconds() * MILLIS_PER_SEC; + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MILLI; + secs_part + nanos_part as i64 + } + + /// Returns the total number of whole microseconds in the duration, + /// or `None` on overflow (exceeding 2<sup>63</sup> microseconds in either direction). + pub fn num_microseconds(&self) -> Option<i64> { + let secs_part = try_opt!(self.num_seconds().checked_mul(MICROS_PER_SEC)); + let nanos_part = self.nanos_mod_sec() / NANOS_PER_MICRO; + secs_part.checked_add(nanos_part as i64) + } + + /// Returns the total number of whole nanoseconds in the duration, + /// or `None` on overflow (exceeding 2<sup>63</sup> nanoseconds in either direction). + pub fn num_nanoseconds(&self) -> Option<i64> { + let secs_part = try_opt!(self.num_seconds().checked_mul(NANOS_PER_SEC as i64)); + let nanos_part = self.nanos_mod_sec(); + secs_part.checked_add(nanos_part as i64) + } + + /// Add two durations, returning `None` if overflow occurred. + pub fn checked_add(&self, rhs: &Duration) -> Option<Duration> { + let mut secs = try_opt!(self.secs.checked_add(rhs.secs)); + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs = try_opt!(secs.checked_add(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { None } else { Some(d) } + } + + /// Subtract two durations, returning `None` if overflow occurred. + pub fn checked_sub(&self, rhs: &Duration) -> Option<Duration> { + let mut secs = try_opt!(self.secs.checked_sub(rhs.secs)); + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs = try_opt!(secs.checked_sub(1)); + } + let d = Duration { secs: secs, nanos: nanos }; + // Even if d is within the bounds of i64 seconds, + // it might still overflow i64 milliseconds. + if d < MIN || d > MAX { None } else { Some(d) } + } + + /// The minimum possible `Duration`: `i64::MIN` milliseconds. + #[inline] + pub fn min_value() -> Duration { MIN } + + /// The maximum possible `Duration`: `i64::MAX` milliseconds. + #[inline] + pub fn max_value() -> Duration { MAX } + + /// A duration where the stored seconds and nanoseconds are equal to zero. + #[inline] + pub fn zero() -> Duration { + Duration { secs: 0, nanos: 0 } + } + + /// Returns `true` if the duration equals `Duration::zero()`. + #[inline] + pub fn is_zero(&self) -> bool { + self.secs == 0 && self.nanos == 0 + } + + /// Creates a `time::Duration` object from `std::time::Duration` + /// + /// This function errors when original duration is larger than the maximum + /// value supported for this type. + pub fn from_std(duration: StdDuration) -> Result<Duration, OutOfRangeError> { + // We need to check secs as u64 before coercing to i64 + if duration.as_secs() > MAX.secs as u64 { + return Err(OutOfRangeError(())); + } + let d = Duration { + secs: duration.as_secs() as i64, + nanos: duration.subsec_nanos() as i32, + }; + if d > MAX { + return Err(OutOfRangeError(())); + } + Ok(d) + } + + /// Creates a `std::time::Duration` object from `time::Duration` + /// + /// This function errors when duration is less than zero. As standard + /// library implementation is limited to non-negative values. + pub fn to_std(&self) -> Result<StdDuration, OutOfRangeError> { + if self.secs < 0 { + return Err(OutOfRangeError(())); + } + Ok(StdDuration::new(self.secs as u64, self.nanos as u32)) + } + + /// Returns the raw value of duration. + #[cfg(target_env = "sgx")] + pub(crate) fn raw(&self) -> (i64, i32) { + (self.secs, self.nanos) + } +} + +impl Neg for Duration { + type Output = Duration; + + #[inline] + fn neg(self) -> Duration { + if self.nanos == 0 { + Duration { secs: -self.secs, nanos: 0 } + } else { + Duration { secs: -self.secs - 1, nanos: NANOS_PER_SEC - self.nanos } + } + } +} + +impl Add for Duration { + type Output = Duration; + + fn add(self, rhs: Duration) -> Duration { + let mut secs = self.secs + rhs.secs; + let mut nanos = self.nanos + rhs.nanos; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Sub for Duration { + type Output = Duration; + + fn sub(self, rhs: Duration) -> Duration { + let mut secs = self.secs - rhs.secs; + let mut nanos = self.nanos - rhs.nanos; + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl Mul<i32> for Duration { + type Output = Duration; + + fn mul(self, rhs: i32) -> Duration { + // Multiply nanoseconds as i64, because it cannot overflow that way. + let total_nanos = self.nanos as i64 * rhs as i64; + let (extra_secs, nanos) = div_mod_floor_64(total_nanos, NANOS_PER_SEC as i64); + let secs = self.secs * rhs as i64 + extra_secs; + Duration { secs: secs, nanos: nanos as i32 } + } +} + +impl Div<i32> for Duration { + type Output = Duration; + + fn div(self, rhs: i32) -> Duration { + let mut secs = self.secs / rhs as i64; + let carry = self.secs - secs * rhs as i64; + let extra_nanos = carry * NANOS_PER_SEC as i64 / rhs as i64; + let mut nanos = self.nanos / rhs + extra_nanos as i32; + if nanos >= NANOS_PER_SEC { + nanos -= NANOS_PER_SEC; + secs += 1; + } + if nanos < 0 { + nanos += NANOS_PER_SEC; + secs -= 1; + } + Duration { secs: secs, nanos: nanos } + } +} + +impl fmt::Display for Duration { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + // technically speaking, negative duration is not valid ISO 8601, + // but we need to print it anyway. + let (abs, sign) = if self.secs < 0 { (-*self, "-") } else { (*self, "") }; + + let days = abs.secs / SECS_PER_DAY; + let secs = abs.secs - days * SECS_PER_DAY; + let hasdate = days != 0; + let hastime = (secs != 0 || abs.nanos != 0) || !hasdate; + + write!(f, "{}P", sign)?; + + if hasdate { + write!(f, "{}D", days)?; + } + if hastime { + if abs.nanos == 0 { + write!(f, "T{}S", secs)?; + } else if abs.nanos % NANOS_PER_MILLI == 0 { + write!(f, "T{}.{:03}S", secs, abs.nanos / NANOS_PER_MILLI)?; + } else if abs.nanos % NANOS_PER_MICRO == 0 { + write!(f, "T{}.{:06}S", secs, abs.nanos / NANOS_PER_MICRO)?; + } else { + write!(f, "T{}.{:09}S", secs, abs.nanos)?; + } + } + Ok(()) + } +} + +/// Represents error when converting `Duration` to/from a standard library +/// implementation +/// +/// The `std::time::Duration` supports a range from zero to `u64::MAX` +/// *seconds*, while this module supports signed range of up to +/// `i64::MAX` of *milliseconds*. +#[derive(Debug, Clone, Copy, PartialEq, Eq)] +pub struct OutOfRangeError(()); + +impl fmt::Display for OutOfRangeError { + #[allow(deprecated)] + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + write!(f, "{}", self.description()) + } +} + +impl Error for OutOfRangeError { + fn description(&self) -> &str { + "Source duration value is out of range for the target type" + } +} + +// Copied from libnum +#[inline] +fn div_mod_floor_64(this: i64, other: i64) -> (i64, i64) { + (div_floor_64(this, other), mod_floor_64(this, other)) +} + +#[inline] +fn div_floor_64(this: i64, other: i64) -> i64 { + match div_rem_64(this, other) { + (d, r) if (r > 0 && other < 0) + || (r < 0 && other > 0) => d - 1, + (d, _) => d, + } +} + +#[inline] +fn mod_floor_64(this: i64, other: i64) -> i64 { + match this % other { + r if (r > 0 && other < 0) + || (r < 0 && other > 0) => r + other, + r => r, + } +} + +#[inline] +fn div_rem_64(this: i64, other: i64) -> (i64, i64) { + (this / other, this % other) +} + +#[cfg(test)] +mod tests { + use super::{Duration, MIN, MAX, OutOfRangeError}; + use std::{i32, i64}; + use std::time::Duration as StdDuration; + + #[test] + fn test_duration() { + assert!(Duration::seconds(1) != Duration::zero()); + assert_eq!(Duration::seconds(1) + Duration::seconds(2), Duration::seconds(3)); + assert_eq!(Duration::seconds(86399) + Duration::seconds(4), + Duration::days(1) + Duration::seconds(3)); + assert_eq!(Duration::days(10) - Duration::seconds(1000), Duration::seconds(863000)); + assert_eq!(Duration::days(10) - Duration::seconds(1000000), Duration::seconds(-136000)); + assert_eq!(Duration::days(2) + Duration::seconds(86399) + + Duration::nanoseconds(1234567890), + Duration::days(3) + Duration::nanoseconds(234567890)); + assert_eq!(-Duration::days(3), Duration::days(-3)); + assert_eq!(-(Duration::days(3) + Duration::seconds(70)), + Duration::days(-4) + Duration::seconds(86400-70)); + } + + #[test] + fn test_duration_num_days() { + assert_eq!(Duration::zero().num_days(), 0); + assert_eq!(Duration::days(1).num_days(), 1); + assert_eq!(Duration::days(-1).num_days(), -1); + assert_eq!(Duration::seconds(86399).num_days(), 0); + assert_eq!(Duration::seconds(86401).num_days(), 1); + assert_eq!(Duration::seconds(-86399).num_days(), 0); + assert_eq!(Duration::seconds(-86401).num_days(), -1); + assert_eq!(Duration::days(i32::MAX as i64).num_days(), i32::MAX as i64); + assert_eq!(Duration::days(i32::MIN as i64).num_days(), i32::MIN as i64); + } + + #[test] + fn test_duration_num_seconds() { + assert_eq!(Duration::zero().num_seconds(), 0); + assert_eq!(Duration::seconds(1).num_seconds(), 1); + assert_eq!(Duration::seconds(-1).num_seconds(), -1); + assert_eq!(Duration::milliseconds(999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(1001).num_seconds(), 1); + assert_eq!(Duration::milliseconds(-999).num_seconds(), 0); + assert_eq!(Duration::milliseconds(-1001).num_seconds(), -1); + } + + #[test] + fn test_duration_num_milliseconds() { + assert_eq!(Duration::zero().num_milliseconds(), 0); + assert_eq!(Duration::milliseconds(1).num_milliseconds(), 1); + assert_eq!(Duration::milliseconds(-1).num_milliseconds(), -1); + assert_eq!(Duration::microseconds(999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(1001).num_milliseconds(), 1); + assert_eq!(Duration::microseconds(-999).num_milliseconds(), 0); + assert_eq!(Duration::microseconds(-1001).num_milliseconds(), -1); + assert_eq!(Duration::milliseconds(i64::MAX).num_milliseconds(), i64::MAX); + assert_eq!(Duration::milliseconds(i64::MIN).num_milliseconds(), i64::MIN); + assert_eq!(MAX.num_milliseconds(), i64::MAX); + assert_eq!(MIN.num_milliseconds(), i64::MIN); + } + + #[test] + fn test_duration_num_microseconds() { + assert_eq!(Duration::zero().num_microseconds(), Some(0)); + assert_eq!(Duration::microseconds(1).num_microseconds(), Some(1)); + assert_eq!(Duration::microseconds(-1).num_microseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1001).num_microseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-999).num_microseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(-1001).num_microseconds(), Some(-1)); + assert_eq!(Duration::microseconds(i64::MAX).num_microseconds(), Some(i64::MAX)); + assert_eq!(Duration::microseconds(i64::MIN).num_microseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_microseconds(), None); + assert_eq!(MIN.num_microseconds(), None); + + // overflow checks + const MICROS_PER_DAY: i64 = 86400_000_000; + assert_eq!(Duration::days(i64::MAX / MICROS_PER_DAY).num_microseconds(), + Some(i64::MAX / MICROS_PER_DAY * MICROS_PER_DAY)); + assert_eq!(Duration::days(i64::MIN / MICROS_PER_DAY).num_microseconds(), + Some(i64::MIN / MICROS_PER_DAY * MICROS_PER_DAY)); + assert_eq!(Duration::days(i64::MAX / MICROS_PER_DAY + 1).num_microseconds(), None); + assert_eq!(Duration::days(i64::MIN / MICROS_PER_DAY - 1).num_microseconds(), None); + } + + #[test] + fn test_duration_num_nanoseconds() { + assert_eq!(Duration::zero().num_nanoseconds(), Some(0)); + assert_eq!(Duration::nanoseconds(1).num_nanoseconds(), Some(1)); + assert_eq!(Duration::nanoseconds(-1).num_nanoseconds(), Some(-1)); + assert_eq!(Duration::nanoseconds(i64::MAX).num_nanoseconds(), Some(i64::MAX)); + assert_eq!(Duration::nanoseconds(i64::MIN).num_nanoseconds(), Some(i64::MIN)); + assert_eq!(MAX.num_nanoseconds(), None); + assert_eq!(MIN.num_nanoseconds(), None); + + // overflow checks + const NANOS_PER_DAY: i64 = 86400_000_000_000; + assert_eq!(Duration::days(i64::MAX / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MAX / NANOS_PER_DAY * NANOS_PER_DAY)); + assert_eq!(Duration::days(i64::MIN / NANOS_PER_DAY).num_nanoseconds(), + Some(i64::MIN / NANOS_PER_DAY * NANOS_PER_DAY)); + assert_eq!(Duration::days(i64::MAX / NANOS_PER_DAY + 1).num_nanoseconds(), None); + assert_eq!(Duration::days(i64::MIN / NANOS_PER_DAY - 1).num_nanoseconds(), None); + } + + #[test] + fn test_duration_checked_ops() { + assert_eq!(Duration::milliseconds(i64::MAX - 1).checked_add(&Duration::microseconds(999)), + Some(Duration::milliseconds(i64::MAX - 2) + Duration::microseconds(1999))); + assert!(Duration::milliseconds(i64::MAX).checked_add(&Duration::microseconds(1000)) + .is_none()); + + assert_eq!(Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(0)), + Some(Duration::milliseconds(i64::MIN))); + assert!(Duration::milliseconds(i64::MIN).checked_sub(&Duration::milliseconds(1)) + .is_none()); + } + + #[test] + fn test_duration_mul() { + assert_eq!(Duration::zero() * i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() * i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 0, Duration::zero()); + assert_eq!(Duration::nanoseconds(1) * 1, Duration::nanoseconds(1)); + assert_eq!(Duration::nanoseconds(1) * 1_000_000_000, Duration::seconds(1)); + assert_eq!(Duration::nanoseconds(1) * -1_000_000_000, -Duration::seconds(1)); + assert_eq!(-Duration::nanoseconds(1) * 1_000_000_000, -Duration::seconds(1)); + assert_eq!(Duration::nanoseconds(30) * 333_333_333, + Duration::seconds(10) - Duration::nanoseconds(10)); + assert_eq!((Duration::nanoseconds(1) + Duration::seconds(1) + Duration::days(1)) * 3, + Duration::nanoseconds(3) + Duration::seconds(3) + Duration::days(3)); + assert_eq!(Duration::milliseconds(1500) * -2, Duration::seconds(-3)); + assert_eq!(Duration::milliseconds(-1500) * 2, Duration::seconds(-3)); + } + + #[test] + fn test_duration_div() { + assert_eq!(Duration::zero() / i32::MAX, Duration::zero()); + assert_eq!(Duration::zero() / i32::MIN, Duration::zero()); + assert_eq!(Duration::nanoseconds(123_456_789) / 1, Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::nanoseconds(123_456_789) / -1, -Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / -1, Duration::nanoseconds(123_456_789)); + assert_eq!(-Duration::nanoseconds(123_456_789) / 1, -Duration::nanoseconds(123_456_789)); + assert_eq!(Duration::seconds(1) / 3, Duration::nanoseconds(333_333_333)); + assert_eq!(Duration::seconds(4) / 3, Duration::nanoseconds(1_333_333_333)); + assert_eq!(Duration::seconds(-1) / 2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(1) / -2, Duration::milliseconds(-500)); + assert_eq!(Duration::seconds(-1) / -2, Duration::milliseconds(500)); + assert_eq!(Duration::seconds(-4) / 3, Duration::nanoseconds(-1_333_333_333)); + assert_eq!(Duration::seconds(-4) / -3, Duration::nanoseconds(1_333_333_333)); + } + + #[test] + fn test_duration_fmt() { + assert_eq!(Duration::zero().to_string(), "PT0S"); + assert_eq!(Duration::days(42).to_string(), "P42D"); + assert_eq!(Duration::days(-42).to_string(), "-P42D"); + assert_eq!(Duration::seconds(42).to_string(), "PT42S"); + assert_eq!(Duration::milliseconds(42).to_string(), "PT0.042S"); + assert_eq!(Duration::microseconds(42).to_string(), "PT0.000042S"); + assert_eq!(Duration::nanoseconds(42).to_string(), "PT0.000000042S"); + assert_eq!((Duration::days(7) + Duration::milliseconds(6543)).to_string(), + "P7DT6.543S"); + assert_eq!(Duration::seconds(-86401).to_string(), "-P1DT1S"); + assert_eq!(Duration::nanoseconds(-1).to_string(), "-PT0.000000001S"); + + // the format specifier should have no effect on `Duration` + assert_eq!(format!("{:30}", Duration::days(1) + Duration::milliseconds(2345)), + "P1DT2.345S"); + } + + #[test] + fn test_to_std() { + assert_eq!(Duration::seconds(1).to_std(), Ok(StdDuration::new(1, 0))); + assert_eq!(Duration::seconds(86401).to_std(), Ok(StdDuration::new(86401, 0))); + assert_eq!(Duration::milliseconds(123).to_std(), Ok(StdDuration::new(0, 123000000))); + assert_eq!(Duration::milliseconds(123765).to_std(), Ok(StdDuration::new(123, 765000000))); + assert_eq!(Duration::nanoseconds(777).to_std(), Ok(StdDuration::new(0, 777))); + assert_eq!(MAX.to_std(), Ok(StdDuration::new(9223372036854775, 807000000))); + assert_eq!(Duration::seconds(-1).to_std(), + Err(OutOfRangeError(()))); + assert_eq!(Duration::milliseconds(-1).to_std(), + Err(OutOfRangeError(()))); + } + + #[test] + fn test_from_std() { + assert_eq!(Ok(Duration::seconds(1)), + Duration::from_std(StdDuration::new(1, 0))); + assert_eq!(Ok(Duration::seconds(86401)), + Duration::from_std(StdDuration::new(86401, 0))); + assert_eq!(Ok(Duration::milliseconds(123)), + Duration::from_std(StdDuration::new(0, 123000000))); + assert_eq!(Ok(Duration::milliseconds(123765)), + Duration::from_std(StdDuration::new(123, 765000000))); + assert_eq!(Ok(Duration::nanoseconds(777)), + Duration::from_std(StdDuration::new(0, 777))); + assert_eq!(Ok(MAX), + Duration::from_std(StdDuration::new(9223372036854775, 807000000))); + assert_eq!(Duration::from_std(StdDuration::new(9223372036854776, 0)), + Err(OutOfRangeError(()))); + assert_eq!(Duration::from_std(StdDuration::new(9223372036854775, 807000001)), + Err(OutOfRangeError(()))); + } +} diff --git a/third_party/rust/time-0.1.45/src/lib.rs b/third_party/rust/time-0.1.45/src/lib.rs new file mode 100644 index 0000000000..c5a937427f --- /dev/null +++ b/third_party/rust/time-0.1.45/src/lib.rs @@ -0,0 +1,1283 @@ +// Copyright 2012-2013 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. + +//! Simple time handling. +//! +//! # Usage +//! +//! This crate is [on crates.io](https://crates.io/crates/time) and can be +//! used by adding `time` to the dependencies in your project's `Cargo.toml`. +//! +//! ```toml +//! [dependencies] +//! time = "0.1" +//! ``` +//! +//! And this in your crate root: +//! +//! ```rust +//! extern crate time; +//! ``` +//! +//! This crate uses the same syntax for format strings as the +//! [`strftime()`](http://man7.org/linux/man-pages/man3/strftime.3.html) +//! function from the C standard library. + +#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png", + html_favicon_url = "https://www.rust-lang.org/favicon.ico", + html_root_url = "https://doc.rust-lang.org/time/")] +#![allow(unknown_lints)] +#![allow(ellipsis_inclusive_range_patterns)] // `..=` requires Rust 1.26 +#![allow(trivial_numeric_casts)] + +#[cfg(unix)] extern crate libc; +#[cfg(windows)] extern crate winapi; +#[cfg(feature = "rustc-serialize")] extern crate rustc_serialize; + +#[cfg(target_os = "wasi")] extern crate wasi; + +#[cfg(test)] #[macro_use] extern crate log; + +use std::cmp::Ordering; +use std::error::Error; +use std::fmt; +use std::ops::{Add, Sub}; + +pub use duration::{Duration, OutOfRangeError}; + +use self::ParseError::{InvalidDay, InvalidDayOfMonth, InvalidDayOfWeek, + InvalidDayOfYear, InvalidFormatSpecifier, InvalidHour, + InvalidMinute, InvalidMonth, InvalidSecond, InvalidTime, + InvalidYear, InvalidZoneOffset, InvalidSecondsSinceEpoch, + MissingFormatConverter, UnexpectedCharacter}; + +pub use parse::strptime; + +mod display; +mod duration; +mod parse; +mod sys; + +static NSEC_PER_SEC: i32 = 1_000_000_000; + +/// 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}. +#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] +#[cfg_attr(feature = "rustc-serialize", derive(RustcEncodable, RustcDecodable))] +pub struct Timespec { pub sec: i64, pub nsec: i32 } +/* + * Timespec assumes that pre-epoch Timespecs have negative sec and positive + * nsec fields. Darwin's and Linux's struct timespec functions handle pre- + * epoch timestamps using a "two steps back, one step forward" representation, + * though the man pages do not actually document this. For example, the time + * -1.2 seconds before the epoch is represented by `Timespec { sec: -2_i64, + * nsec: 800_000_000 }`. + */ +impl Timespec { + pub fn new(sec: i64, nsec: i32) -> Timespec { + assert!(nsec >= 0 && nsec < NSEC_PER_SEC); + Timespec { sec: sec, nsec: nsec } + } +} + +impl Add<Duration> for Timespec { + type Output = Timespec; + + fn add(self, other: Duration) -> Timespec { + let d_sec = other.num_seconds(); + // It is safe to unwrap the nanoseconds, because there cannot be + // more than one second left, which fits in i64 and in i32. + let d_nsec = (other - Duration::seconds(d_sec)) + .num_nanoseconds().unwrap() as i32; + let mut sec = self.sec + d_sec; + let mut nsec = self.nsec + d_nsec; + if nsec >= NSEC_PER_SEC { + nsec -= NSEC_PER_SEC; + sec += 1; + } else if nsec < 0 { + nsec += NSEC_PER_SEC; + sec -= 1; + } + Timespec::new(sec, nsec) + } +} + +impl Sub<Duration> for Timespec { + type Output = Timespec; + + fn sub(self, other: Duration) -> Timespec { + let d_sec = other.num_seconds(); + // It is safe to unwrap the nanoseconds, because there cannot be + // more than one second left, which fits in i64 and in i32. + let d_nsec = (other - Duration::seconds(d_sec)) + .num_nanoseconds().unwrap() as i32; + let mut sec = self.sec - d_sec; + let mut nsec = self.nsec - d_nsec; + if nsec >= NSEC_PER_SEC { + nsec -= NSEC_PER_SEC; + sec += 1; + } else if nsec < 0 { + nsec += NSEC_PER_SEC; + sec -= 1; + } + Timespec::new(sec, nsec) + } +} + +impl Sub<Timespec> for Timespec { + type Output = Duration; + + fn sub(self, other: Timespec) -> Duration { + let sec = self.sec - other.sec; + let nsec = self.nsec - other.nsec; + Duration::seconds(sec) + Duration::nanoseconds(nsec as i64) + } +} + +/** + * Returns the current time as a `timespec` containing the seconds and + * nanoseconds since 1970-01-01T00:00:00Z. + */ +pub fn get_time() -> Timespec { + let (sec, nsec) = sys::get_time(); + Timespec::new(sec, nsec) +} + + +/** + * Returns the current value of a high-resolution performance counter + * in nanoseconds since an unspecified epoch. + */ +#[inline] +pub fn precise_time_ns() -> u64 { + sys::get_precise_ns() +} + + +/** + * Returns the current value of a high-resolution performance counter + * in seconds since an unspecified epoch. + */ +pub fn precise_time_s() -> f64 { + return (precise_time_ns() as f64) / 1000000000.; +} + +/// An opaque structure representing a moment in time. +/// +/// The only operation that can be performed on a `PreciseTime` is the +/// calculation of the `Duration` of time that lies between them. +/// +/// # Examples +/// +/// Repeatedly call a function for 1 second: +/// +/// ```rust +/// use time::{Duration, PreciseTime}; +/// # fn do_some_work() {} +/// +/// let start = PreciseTime::now(); +/// +/// while start.to(PreciseTime::now()) < Duration::seconds(1) { +/// do_some_work(); +/// } +/// ``` +#[derive(Copy, Clone)] +pub struct PreciseTime(u64); + +impl PreciseTime { + /// Returns a `PreciseTime` representing the current moment in time. + pub fn now() -> PreciseTime { + PreciseTime(precise_time_ns()) + } + + /// Returns a `Duration` representing the span of time from the value of + /// `self` to the value of `later`. + /// + /// # Notes + /// + /// If `later` represents a time before `self`, the result of this method + /// is unspecified. + /// + /// If `later` represents a time more than 293 years after `self`, the + /// result of this method is unspecified. + #[inline] + pub fn to(&self, later: PreciseTime) -> Duration { + // NB: even if later is less than self due to overflow, this will work + // since the subtraction will underflow properly as well. + // + // We could deal with the overflow when casting to an i64, but all that + // gets us is the ability to handle intervals of up to 584 years, which + // seems not very useful :) + Duration::nanoseconds((later.0 - self.0) as i64) + } +} + +/// A structure representing a moment in time. +/// +/// `SteadyTime`s are generated by a "steady" clock, that is, a clock which +/// never experiences discontinuous jumps and for which time always flows at +/// the same rate. +/// +/// # Examples +/// +/// Repeatedly call a function for 1 second: +/// +/// ```rust +/// # use time::{Duration, SteadyTime}; +/// # fn do_some_work() {} +/// let start = SteadyTime::now(); +/// +/// while SteadyTime::now() - start < Duration::seconds(1) { +/// do_some_work(); +/// } +/// ``` +#[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Debug)] +pub struct SteadyTime(sys::SteadyTime); + +impl SteadyTime { + /// Returns a `SteadyTime` representing the current moment in time. + pub fn now() -> SteadyTime { + SteadyTime(sys::SteadyTime::now()) + } +} + +impl fmt::Display for SteadyTime { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + // TODO: needs a display customization + fmt::Debug::fmt(self, fmt) + } +} + +impl Sub for SteadyTime { + type Output = Duration; + + fn sub(self, other: SteadyTime) -> Duration { + self.0 - other.0 + } +} + +impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + + fn sub(self, other: Duration) -> SteadyTime { + SteadyTime(self.0 - other) + } +} + +impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + + fn add(self, other: Duration) -> SteadyTime { + SteadyTime(self.0 + other) + } +} + +#[cfg(not(any(windows, target_env = "sgx")))] +pub fn tzset() { + extern { fn tzset(); } + unsafe { tzset() } +} + + +#[cfg(any(windows, target_env = "sgx"))] +pub fn tzset() {} + +/// 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)] +#[derive(Copy, Clone, PartialEq, Eq, Debug, Hash)] +#[cfg_attr(feature = "rustc-serialize", derive(RustcEncodable, RustcDecodable))] +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 Add<Duration> for Tm { + type Output = Tm; + + /// The resulting Tm is in UTC. + // FIXME: The resulting Tm should have the same timezone as `self`; + // however, we need a function such as `at_tm(clock: Timespec, offset: i32)` + // for this. + fn add(self, other: Duration) -> Tm { + at_utc(self.to_timespec() + other) + } +} + +impl Sub<Duration> for Tm { + type Output = Tm; + + /// The resulting Tm is in UTC. + // FIXME: The resulting Tm should have the same timezone as `self`; + // however, we need a function such as `at_tm(clock: Timespec, offset: i32)` + // for this. + fn sub(self, other: Duration) -> Tm { + at_utc(self.to_timespec() - other) + } +} + +impl Sub<Tm> for Tm { + type Output = Duration; + + fn sub(self, other: Tm) -> Duration { + self.to_timespec() - other.to_timespec() + } +} + +impl PartialOrd for Tm { + fn partial_cmp(&self, other: &Tm) -> Option<Ordering> { + self.to_timespec().partial_cmp(&other.to_timespec()) + } +} + +impl Ord for Tm { + fn cmp(&self, other: &Tm) -> Ordering { + self.to_timespec().cmp(&other.to_timespec()) + } +} + +pub fn empty_tm() -> 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, + } +} + +/// Returns the specified time in UTC +pub fn at_utc(clock: Timespec) -> Tm { + let Timespec { sec, nsec } = clock; + let mut tm = empty_tm(); + sys::time_to_utc_tm(sec, &mut tm); + tm.tm_nsec = nsec; + tm +} + +/// Returns the current time in UTC +pub fn now_utc() -> Tm { + at_utc(get_time()) +} + +/// Returns the specified time in the local timezone +pub fn at(clock: Timespec) -> Tm { + let Timespec { sec, nsec } = clock; + let mut tm = empty_tm(); + sys::time_to_local_tm(sec, &mut tm); + tm.tm_nsec = nsec; + tm +} + +/// Returns the current time in the local timezone +pub fn now() -> Tm { + at(get_time()) +} + +impl Tm { + /// Convert time to the seconds from January 1, 1970 + pub fn to_timespec(&self) -> Timespec { + let sec = match self.tm_utcoff { + 0 => sys::utc_tm_to_time(self), + _ => sys::local_tm_to_time(self) + }; + + Timespec::new(sec, self.tm_nsec) + } + + /// Convert time to the local timezone + pub fn to_local(&self) -> Tm { + at(self.to_timespec()) + } + + /// Convert time to the UTC + pub fn to_utc(&self) -> Tm { + match self.tm_utcoff { + 0 => *self, + _ => at_utc(self.to_timespec()) + } + } + + /** + * Returns a TmFmt that outputs according to the `asctime` format in ISO + * C, in the local timezone. + * + * Example: "Thu Jan 1 00:00:00 1970" + */ + pub fn ctime(&self) -> TmFmt { + TmFmt { + tm: self, + format: Fmt::Ctime, + } + } + + /** + * Returns a TmFmt that outputs according to the `asctime` format in ISO + * C. + * + * Example: "Thu Jan 1 00:00:00 1970" + */ + pub fn asctime(&self) -> TmFmt { + TmFmt { + tm: self, + format: Fmt::Str("%c"), + } + } + + /// Formats the time according to the format string. + pub fn strftime<'a>(&'a self, format: &'a str) -> Result<TmFmt<'a>, ParseError> { + validate_format(TmFmt { + tm: self, + format: Fmt::Str(format), + }) + } + + /** + * Returns a TmFmt that outputs according to RFC 822. + * + * local: "Thu, 22 Mar 2012 07:53:18 PST" + * utc: "Thu, 22 Mar 2012 14:53:18 GMT" + */ + pub fn rfc822(&self) -> TmFmt { + let fmt = if self.tm_utcoff == 0 { + "%a, %d %b %Y %T GMT" + } else { + "%a, %d %b %Y %T %Z" + }; + TmFmt { + tm: self, + format: Fmt::Str(fmt), + } + } + + /** + * Returns a TmFmt that outputs according to RFC 822 with Zulu time. + * + * local: "Thu, 22 Mar 2012 07:53:18 -0700" + * utc: "Thu, 22 Mar 2012 14:53:18 -0000" + */ + pub fn rfc822z(&self) -> TmFmt { + TmFmt { + tm: self, + format: Fmt::Str("%a, %d %b %Y %T %z"), + } + } + + /** + * Returns a TmFmt that outputs according to RFC 3339. RFC 3339 is + * compatible with ISO 8601. + * + * local: "2012-02-22T07:53:18-07:00" + * utc: "2012-02-22T14:53:18Z" + */ + pub fn rfc3339<'a>(&'a self) -> TmFmt { + TmFmt { + tm: self, + format: Fmt::Rfc3339, + } + } +} + +#[derive(Copy, PartialEq, Debug, Clone)] +pub enum ParseError { + InvalidSecond, + InvalidMinute, + InvalidHour, + InvalidDay, + InvalidMonth, + InvalidYear, + InvalidDayOfWeek, + InvalidDayOfMonth, + InvalidDayOfYear, + InvalidZoneOffset, + InvalidTime, + InvalidSecondsSinceEpoch, + MissingFormatConverter, + InvalidFormatSpecifier(char), + UnexpectedCharacter(char, char), +} + +impl fmt::Display for ParseError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + #[allow(deprecated)] + match *self { + InvalidFormatSpecifier(ch) => { + write!(f, "{}: %{}", self.description(), ch) + } + UnexpectedCharacter(a, b) => { + write!(f, "expected: `{}`, found: `{}`", a, b) + } + _ => write!(f, "{}", self.description()) + } + } +} + +impl Error for ParseError { + fn description(&self) -> &str { + match *self { + InvalidSecond => "Invalid second.", + InvalidMinute => "Invalid minute.", + InvalidHour => "Invalid hour.", + InvalidDay => "Invalid day.", + InvalidMonth => "Invalid month.", + InvalidYear => "Invalid year.", + InvalidDayOfWeek => "Invalid day of the week.", + InvalidDayOfMonth => "Invalid day of the month.", + InvalidDayOfYear => "Invalid day of the year.", + InvalidZoneOffset => "Invalid zone offset.", + InvalidTime => "Invalid time.", + InvalidSecondsSinceEpoch => "Invalid seconds since epoch.", + MissingFormatConverter => "missing format converter after `%`", + InvalidFormatSpecifier(..) => "invalid format specifier", + UnexpectedCharacter(..) => "Unexpected character.", + } + } +} + +/// A wrapper around a `Tm` and format string that implements Display. +#[derive(Debug)] +pub struct TmFmt<'a> { + tm: &'a Tm, + format: Fmt<'a> +} + +#[derive(Debug)] +enum Fmt<'a> { + Str(&'a str), + Rfc3339, + Ctime, +} + +fn validate_format<'a>(fmt: TmFmt<'a>) -> Result<TmFmt<'a>, ParseError> { + + match (fmt.tm.tm_wday, fmt.tm.tm_mon) { + (0...6, 0...11) => (), + (_wday, 0...11) => return Err(InvalidDayOfWeek), + (0...6, _mon) => return Err(InvalidMonth), + _ => return Err(InvalidDay) + } + match fmt.format { + Fmt::Str(ref s) => { + let mut chars = s.chars(); + loop { + match chars.next() { + Some('%') => { + match chars.next() { + Some('A') | Some('a') | Some('B') | Some('b') | + Some('C') | Some('c') | Some('D') | Some('d') | + Some('e') | Some('F') | Some('f') | Some('G') | + Some('g') | Some('H') | Some('h') | Some('I') | + Some('j') | Some('k') | Some('l') | Some('M') | + Some('m') | Some('n') | Some('P') | Some('p') | + Some('R') | Some('r') | Some('S') | Some('s') | + Some('T') | Some('t') | Some('U') | Some('u') | + Some('V') | Some('v') | Some('W') | Some('w') | + Some('X') | Some('x') | Some('Y') | Some('y') | + Some('Z') | Some('z') | Some('+') | Some('%') => (), + + Some(c) => return Err(InvalidFormatSpecifier(c)), + None => return Err(MissingFormatConverter), + } + }, + None => break, + _ => () + } + } + }, + _ => () + } + Ok(fmt) +} + +/// Formats the time according to the format string. +pub fn strftime(format: &str, tm: &Tm) -> Result<String, ParseError> { + tm.strftime(format).map(|fmt| fmt.to_string()) +} + +#[cfg(test)] +mod tests { + use super::{Timespec, get_time, precise_time_ns, precise_time_s, + at_utc, at, strptime, PreciseTime, SteadyTime, ParseError, Duration}; + use super::ParseError::{InvalidTime, InvalidYear, MissingFormatConverter, + InvalidFormatSpecifier}; + + #[allow(deprecated)] // `Once::new` is const starting in Rust 1.32 + use std::sync::ONCE_INIT; + use std::sync::{Once, Mutex, MutexGuard, LockResult}; + use std::i32; + use std::mem; + + struct TzReset { + _tzreset: ::sys::TzReset, + _lock: LockResult<MutexGuard<'static, ()>>, + } + + fn set_time_zone_la_or_london(london: bool) -> TzReset { + // Lock manages current timezone because some tests require LA some + // London + static mut LOCK: *mut Mutex<()> = 0 as *mut _; + #[allow(deprecated)] // `Once::new` is const starting in Rust 1.32 + static INIT: Once = ONCE_INIT; + + unsafe { + INIT.call_once(|| { + LOCK = mem::transmute(Box::new(Mutex::new(()))); + }); + + let timezone_lock = (*LOCK).lock(); + let reset_func = if london { + ::sys::set_london_with_dst_time_zone() + } else { + ::sys::set_los_angeles_time_zone() + }; + TzReset { + _lock: timezone_lock, + _tzreset: reset_func, + } + } + } + + fn set_time_zone() -> TzReset { + set_time_zone_la_or_london(false) + } + + fn set_time_zone_london_dst() -> TzReset { + set_time_zone_la_or_london(true) + } + + #[test] + fn test_get_time() { + static SOME_RECENT_DATE: i64 = 1577836800i64; // 2020-01-01T00:00:00Z + static SOME_FUTURE_DATE: i64 = i32::MAX as i64; // Y2038 + + let tv1 = get_time(); + debug!("tv1={} sec + {} nsec", tv1.sec, tv1.nsec); + + assert!(tv1.sec > SOME_RECENT_DATE); + assert!(tv1.nsec < 1000000000i32); + + let tv2 = get_time(); + debug!("tv2={} sec + {} nsec", tv2.sec, tv2.nsec); + + assert!(tv2.sec >= tv1.sec); + assert!(tv2.sec < SOME_FUTURE_DATE); + assert!(tv2.nsec < 1000000000i32); + if tv2.sec == tv1.sec { + assert!(tv2.nsec >= tv1.nsec); + } + } + + #[test] + fn test_precise_time() { + let s0 = precise_time_s(); + debug!("s0={} sec", s0); + assert!(s0 > 0.); + + let ns0 = precise_time_ns(); + let ns1 = precise_time_ns(); + debug!("ns0={} ns", ns0); + debug!("ns1={} ns", ns1); + assert!(ns1 >= ns0); + + let ns2 = precise_time_ns(); + debug!("ns2={} ns", ns2); + assert!(ns2 >= ns1); + } + + #[test] + fn test_precise_time_to() { + let t0 = PreciseTime(1000); + let t1 = PreciseTime(1023); + assert_eq!(Duration::nanoseconds(23), t0.to(t1)); + } + + #[test] + fn test_at_utc() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + + assert_eq!(utc.tm_sec, 30); + assert_eq!(utc.tm_min, 31); + assert_eq!(utc.tm_hour, 23); + assert_eq!(utc.tm_mday, 13); + assert_eq!(utc.tm_mon, 1); + assert_eq!(utc.tm_year, 109); + assert_eq!(utc.tm_wday, 5); + assert_eq!(utc.tm_yday, 43); + assert_eq!(utc.tm_isdst, 0); + assert_eq!(utc.tm_utcoff, 0); + assert_eq!(utc.tm_nsec, 54321); + } + + #[test] + fn test_at() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let local = at(time); + + debug!("time_at: {:?}", local); + + assert_eq!(local.tm_sec, 30); + assert_eq!(local.tm_min, 31); + assert_eq!(local.tm_hour, 15); + assert_eq!(local.tm_mday, 13); + assert_eq!(local.tm_mon, 1); + assert_eq!(local.tm_year, 109); + assert_eq!(local.tm_wday, 5); + assert_eq!(local.tm_yday, 43); + assert_eq!(local.tm_isdst, 0); + assert_eq!(local.tm_utcoff, -28800); + assert_eq!(local.tm_nsec, 54321); + } + + #[test] + fn test_to_timespec() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + + assert_eq!(utc.to_timespec(), time); + assert_eq!(utc.to_local().to_timespec(), time); + } + + #[test] + fn test_conversions() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + let local = at(time); + + assert!(local.to_local() == local); + assert!(local.to_utc() == utc); + assert!(local.to_utc().to_local() == local); + assert!(utc.to_utc() == utc); + assert!(utc.to_local() == local); + assert!(utc.to_local().to_utc() == utc); + } + + #[test] + fn test_strptime() { + let _reset = set_time_zone(); + + match strptime("", "") { + Ok(ref tm) => { + assert!(tm.tm_sec == 0); + assert!(tm.tm_min == 0); + assert!(tm.tm_hour == 0); + assert!(tm.tm_mday == 0); + assert!(tm.tm_mon == 0); + assert!(tm.tm_year == 0); + assert!(tm.tm_wday == 0); + assert!(tm.tm_isdst == 0); + assert!(tm.tm_utcoff == 0); + assert!(tm.tm_nsec == 0); + } + Err(_) => () + } + + let format = "%a %b %e %T.%f %Y"; + assert_eq!(strptime("", format), Err(ParseError::InvalidDay)); + assert_eq!(strptime("Fri Feb 13 15:31:30", format), + Err(InvalidTime)); + + match strptime("Fri Feb 13 15:31:30.01234 2009", format) { + Err(e) => panic!("{}", e), + Ok(ref tm) => { + assert_eq!(tm.tm_sec, 30); + assert_eq!(tm.tm_min, 31); + assert_eq!(tm.tm_hour, 15); + assert_eq!(tm.tm_mday, 13); + assert_eq!(tm.tm_mon, 1); + assert_eq!(tm.tm_year, 109); + assert_eq!(tm.tm_wday, 5); + assert_eq!(tm.tm_yday, 0); + assert_eq!(tm.tm_isdst, 0); + assert_eq!(tm.tm_utcoff, 0); + assert_eq!(tm.tm_nsec, 12340000); + } + } + + fn test(s: &str, format: &str) -> bool { + match strptime(s, format) { + Ok(tm) => { + tm.strftime(format).unwrap().to_string() == s.to_string() + }, + Err(e) => panic!("{:?}, s={:?}, format={:?}", e, s, format) + } + } + + fn test_oneway(s : &str, format : &str) -> bool { + match strptime(s, format) { + Ok(_) => { + // oneway tests are used when reformatting the parsed Tm + // back into a string can generate a different string + // from the original (i.e. leading zeroes) + true + }, + Err(e) => panic!("{:?}, s={:?}, format={:?}", e, s, format) + } + } + + let days = [ + "Sunday".to_string(), + "Monday".to_string(), + "Tuesday".to_string(), + "Wednesday".to_string(), + "Thursday".to_string(), + "Friday".to_string(), + "Saturday".to_string() + ]; + for day in days.iter() { + assert!(test(&day, "%A")); + } + + let days = [ + "Sun".to_string(), + "Mon".to_string(), + "Tue".to_string(), + "Wed".to_string(), + "Thu".to_string(), + "Fri".to_string(), + "Sat".to_string() + ]; + for day in days.iter() { + assert!(test(&day, "%a")); + } + + let months = [ + "January".to_string(), + "February".to_string(), + "March".to_string(), + "April".to_string(), + "May".to_string(), + "June".to_string(), + "July".to_string(), + "August".to_string(), + "September".to_string(), + "October".to_string(), + "November".to_string(), + "December".to_string() + ]; + for day in months.iter() { + assert!(test(&day, "%B")); + } + + let months = [ + "Jan".to_string(), + "Feb".to_string(), + "Mar".to_string(), + "Apr".to_string(), + "May".to_string(), + "Jun".to_string(), + "Jul".to_string(), + "Aug".to_string(), + "Sep".to_string(), + "Oct".to_string(), + "Nov".to_string(), + "Dec".to_string() + ]; + for day in months.iter() { + assert!(test(&day, "%b")); + } + + assert!(test("19", "%C")); + assert!(test("Fri Feb 3 23:31:30 2009", "%c")); + assert!(test("Fri Feb 13 23:31:30 2009", "%c")); + assert!(test("02/13/09", "%D")); + assert!(test("03", "%d")); + assert!(test("13", "%d")); + assert!(test(" 3", "%e")); + assert!(test("13", "%e")); + assert!(test("2009-02-13", "%F")); + assert!(test("03", "%H")); + assert!(test("13", "%H")); + assert!(test("03", "%I")); // FIXME (#2350): flesh out + assert!(test("11", "%I")); // FIXME (#2350): flesh out + assert!(test("044", "%j")); + assert!(test(" 3", "%k")); + assert!(test("13", "%k")); + assert!(test(" 1", "%l")); + assert!(test("11", "%l")); + assert!(test("03", "%M")); + assert!(test("13", "%M")); + assert!(test("\n", "%n")); + assert!(test("am", "%P")); + assert!(test("pm", "%P")); + assert!(test("AM", "%p")); + assert!(test("PM", "%p")); + assert!(test("23:31", "%R")); + assert!(test("11:31:30 AM", "%r")); + assert!(test("11:31:30 PM", "%r")); + assert!(test("03", "%S")); + assert!(test("13", "%S")); + assert!(test("15:31:30", "%T")); + assert!(test("\t", "%t")); + assert!(test("1", "%u")); + assert!(test("7", "%u")); + assert!(test("13-Feb-2009", "%v")); + assert!(test("0", "%w")); + assert!(test("6", "%w")); + assert!(test("2009", "%Y")); + assert!(test("09", "%y")); + + assert!(test_oneway("3", "%d")); + assert!(test_oneway("3", "%H")); + assert!(test_oneway("3", "%e")); + assert!(test_oneway("3", "%M")); + assert!(test_oneway("3", "%S")); + + assert!(strptime("-0000", "%z").unwrap().tm_utcoff == 0); + assert!(strptime("-00:00", "%z").unwrap().tm_utcoff == 0); + assert!(strptime("Z", "%z").unwrap().tm_utcoff == 0); + assert_eq!(-28800, strptime("-0800", "%z").unwrap().tm_utcoff); + assert_eq!(-28800, strptime("-08:00", "%z").unwrap().tm_utcoff); + assert_eq!(28800, strptime("+0800", "%z").unwrap().tm_utcoff); + assert_eq!(28800, strptime("+08:00", "%z").unwrap().tm_utcoff); + assert_eq!(5400, strptime("+0130", "%z").unwrap().tm_utcoff); + assert_eq!(5400, strptime("+01:30", "%z").unwrap().tm_utcoff); + assert!(test("%", "%%")); + + // Test for #7256 + assert_eq!(strptime("360", "%Y-%m-%d"), Err(InvalidYear)); + + // Test for epoch seconds parsing + { + assert!(test("1428035610", "%s")); + let tm = strptime("1428035610", "%s").unwrap(); + assert_eq!(tm.tm_utcoff, 0); + assert_eq!(tm.tm_isdst, 0); + assert_eq!(tm.tm_yday, 92); + assert_eq!(tm.tm_wday, 5); + assert_eq!(tm.tm_year, 115); + assert_eq!(tm.tm_mon, 3); + assert_eq!(tm.tm_mday, 3); + assert_eq!(tm.tm_hour, 4); + } + } + + #[test] + fn test_asctime() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + let local = at(time); + + debug!("test_ctime: {} {}", utc.asctime(), local.asctime()); + + assert_eq!(utc.asctime().to_string(), "Fri Feb 13 23:31:30 2009".to_string()); + assert_eq!(local.asctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + } + + #[test] + fn test_ctime() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + let local = at(time); + + debug!("test_ctime: {} {}", utc.ctime(), local.ctime()); + + assert_eq!(utc.ctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + assert_eq!(local.ctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + } + + #[test] + fn test_strftime() { + let _reset = set_time_zone(); + + let time = Timespec::new(1234567890, 54321); + let utc = at_utc(time); + let local = at(time); + + assert_eq!(local.strftime("").unwrap().to_string(), "".to_string()); + assert_eq!(local.strftime("%A").unwrap().to_string(), "Friday".to_string()); + assert_eq!(local.strftime("%a").unwrap().to_string(), "Fri".to_string()); + assert_eq!(local.strftime("%B").unwrap().to_string(), "February".to_string()); + assert_eq!(local.strftime("%b").unwrap().to_string(), "Feb".to_string()); + assert_eq!(local.strftime("%C").unwrap().to_string(), "20".to_string()); + assert_eq!(local.strftime("%c").unwrap().to_string(), + "Fri Feb 13 15:31:30 2009".to_string()); + assert_eq!(local.strftime("%D").unwrap().to_string(), "02/13/09".to_string()); + assert_eq!(local.strftime("%d").unwrap().to_string(), "13".to_string()); + assert_eq!(local.strftime("%e").unwrap().to_string(), "13".to_string()); + assert_eq!(local.strftime("%F").unwrap().to_string(), "2009-02-13".to_string()); + assert_eq!(local.strftime("%f").unwrap().to_string(), "000054321".to_string()); + assert_eq!(local.strftime("%G").unwrap().to_string(), "2009".to_string()); + assert_eq!(local.strftime("%g").unwrap().to_string(), "09".to_string()); + assert_eq!(local.strftime("%H").unwrap().to_string(), "15".to_string()); + assert_eq!(local.strftime("%h").unwrap().to_string(), "Feb".to_string()); + assert_eq!(local.strftime("%I").unwrap().to_string(), "03".to_string()); + assert_eq!(local.strftime("%j").unwrap().to_string(), "044".to_string()); + assert_eq!(local.strftime("%k").unwrap().to_string(), "15".to_string()); + assert_eq!(local.strftime("%l").unwrap().to_string(), " 3".to_string()); + assert_eq!(local.strftime("%M").unwrap().to_string(), "31".to_string()); + assert_eq!(local.strftime("%m").unwrap().to_string(), "02".to_string()); + assert_eq!(local.strftime("%n").unwrap().to_string(), "\n".to_string()); + assert_eq!(local.strftime("%P").unwrap().to_string(), "pm".to_string()); + assert_eq!(local.strftime("%p").unwrap().to_string(), "PM".to_string()); + assert_eq!(local.strftime("%R").unwrap().to_string(), "15:31".to_string()); + assert_eq!(local.strftime("%r").unwrap().to_string(), "03:31:30 PM".to_string()); + assert_eq!(local.strftime("%S").unwrap().to_string(), "30".to_string()); + assert_eq!(local.strftime("%s").unwrap().to_string(), "1234567890".to_string()); + assert_eq!(local.strftime("%T").unwrap().to_string(), "15:31:30".to_string()); + assert_eq!(local.strftime("%t").unwrap().to_string(), "\t".to_string()); + assert_eq!(local.strftime("%U").unwrap().to_string(), "06".to_string()); + assert_eq!(local.strftime("%u").unwrap().to_string(), "5".to_string()); + assert_eq!(local.strftime("%V").unwrap().to_string(), "07".to_string()); + assert_eq!(local.strftime("%v").unwrap().to_string(), "13-Feb-2009".to_string()); + assert_eq!(local.strftime("%W").unwrap().to_string(), "06".to_string()); + assert_eq!(local.strftime("%w").unwrap().to_string(), "5".to_string()); + // FIXME (#2350): support locale + assert_eq!(local.strftime("%X").unwrap().to_string(), "15:31:30".to_string()); + // FIXME (#2350): support locale + assert_eq!(local.strftime("%x").unwrap().to_string(), "02/13/09".to_string()); + assert_eq!(local.strftime("%Y").unwrap().to_string(), "2009".to_string()); + assert_eq!(local.strftime("%y").unwrap().to_string(), "09".to_string()); + // FIXME (#2350): support locale + assert_eq!(local.strftime("%Z").unwrap().to_string(), "".to_string()); + assert_eq!(local.strftime("%z").unwrap().to_string(), "-0800".to_string()); + assert_eq!(local.strftime("%+").unwrap().to_string(), + "2009-02-13T15:31:30-08:00".to_string()); + assert_eq!(local.strftime("%%").unwrap().to_string(), "%".to_string()); + + let invalid_specifiers = ["%E", "%J", "%K", "%L", "%N", "%O", "%o", "%Q", "%q"]; + for &sp in invalid_specifiers.iter() { + assert_eq!(local.strftime(sp).unwrap_err(), + InvalidFormatSpecifier(sp[1..].chars().next().unwrap())); + } + assert_eq!(local.strftime("%").unwrap_err(), MissingFormatConverter); + assert_eq!(local.strftime("%A %").unwrap_err(), MissingFormatConverter); + + assert_eq!(local.asctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + assert_eq!(local.ctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + assert_eq!(local.rfc822z().to_string(), "Fri, 13 Feb 2009 15:31:30 -0800".to_string()); + assert_eq!(local.rfc3339().to_string(), "2009-02-13T15:31:30-08:00".to_string()); + + assert_eq!(utc.asctime().to_string(), "Fri Feb 13 23:31:30 2009".to_string()); + assert_eq!(utc.ctime().to_string(), "Fri Feb 13 15:31:30 2009".to_string()); + assert_eq!(utc.rfc822().to_string(), "Fri, 13 Feb 2009 23:31:30 GMT".to_string()); + assert_eq!(utc.rfc822z().to_string(), "Fri, 13 Feb 2009 23:31:30 -0000".to_string()); + assert_eq!(utc.rfc3339().to_string(), "2009-02-13T23:31:30Z".to_string()); + } + + #[test] + fn test_timespec_eq_ord() { + let a = &Timespec::new(-2, 1); + let b = &Timespec::new(-1, 2); + let c = &Timespec::new(1, 2); + let d = &Timespec::new(2, 1); + let e = &Timespec::new(2, 1); + + assert!(d.eq(e)); + assert!(c.ne(e)); + + assert!(a.lt(b)); + assert!(b.lt(c)); + assert!(c.lt(d)); + + assert!(a.le(b)); + assert!(b.le(c)); + assert!(c.le(d)); + assert!(d.le(e)); + assert!(e.le(d)); + + assert!(b.ge(a)); + assert!(c.ge(b)); + assert!(d.ge(c)); + assert!(e.ge(d)); + assert!(d.ge(e)); + + assert!(b.gt(a)); + assert!(c.gt(b)); + assert!(d.gt(c)); + } + + #[test] + #[allow(deprecated)] + fn test_timespec_hash() { + use std::hash::{Hash, Hasher}; + + let c = &Timespec::new(3, 2); + let d = &Timespec::new(2, 1); + let e = &Timespec::new(2, 1); + + let mut hasher = ::std::hash::SipHasher::new(); + + let d_hash:u64 = { + d.hash(&mut hasher); + hasher.finish() + }; + + hasher = ::std::hash::SipHasher::new(); + + let e_hash:u64 = { + e.hash(&mut hasher); + hasher.finish() + }; + + hasher = ::std::hash::SipHasher::new(); + + let c_hash:u64 = { + c.hash(&mut hasher); + hasher.finish() + }; + + assert_eq!(d_hash, e_hash); + assert!(c_hash != e_hash); + } + + #[test] + fn test_timespec_add() { + let a = Timespec::new(1, 2); + let b = Duration::seconds(2) + Duration::nanoseconds(3); + let c = a + b; + assert_eq!(c.sec, 3); + assert_eq!(c.nsec, 5); + + let p = Timespec::new(1, super::NSEC_PER_SEC - 2); + let q = Duration::seconds(2) + Duration::nanoseconds(2); + let r = p + q; + assert_eq!(r.sec, 4); + assert_eq!(r.nsec, 0); + + let u = Timespec::new(1, super::NSEC_PER_SEC - 2); + let v = Duration::seconds(2) + Duration::nanoseconds(3); + let w = u + v; + assert_eq!(w.sec, 4); + assert_eq!(w.nsec, 1); + + let k = Timespec::new(1, 0); + let l = Duration::nanoseconds(-1); + let m = k + l; + assert_eq!(m.sec, 0); + assert_eq!(m.nsec, 999_999_999); + } + + #[test] + fn test_timespec_sub() { + let a = Timespec::new(2, 3); + let b = Timespec::new(1, 2); + let c = a - b; + assert_eq!(c.num_nanoseconds(), Some(super::NSEC_PER_SEC as i64 + 1)); + + let p = Timespec::new(2, 0); + let q = Timespec::new(1, 2); + let r = p - q; + assert_eq!(r.num_nanoseconds(), Some(super::NSEC_PER_SEC as i64 - 2)); + + let u = Timespec::new(1, 2); + let v = Timespec::new(2, 3); + let w = u - v; + assert_eq!(w.num_nanoseconds(), Some(-super::NSEC_PER_SEC as i64 - 1)); + } + + #[test] + fn test_time_sub() { + let a = ::now(); + let b = at(a.to_timespec() + Duration::seconds(5)); + let c = b - a; + assert_eq!(c.num_nanoseconds(), Some(super::NSEC_PER_SEC as i64 * 5)); + } + + #[test] + fn test_steadytime_sub() { + let a = SteadyTime::now(); + let b = a + Duration::seconds(1); + assert_eq!(b - a, Duration::seconds(1)); + assert_eq!(a - b, Duration::seconds(-1)); + } + + #[test] + fn test_date_before_1970() { + let early = strptime("1901-01-06", "%F").unwrap(); + let late = strptime("2000-01-01", "%F").unwrap(); + assert!(early < late); + } + + #[test] + fn test_dst() { + let _reset = set_time_zone_london_dst(); + let utc_in_feb = strptime("2015-02-01Z", "%F%z").unwrap(); + let utc_in_jun = strptime("2015-06-01Z", "%F%z").unwrap(); + let utc_in_nov = strptime("2015-11-01Z", "%F%z").unwrap(); + let local_in_feb = utc_in_feb.to_local(); + let local_in_jun = utc_in_jun.to_local(); + let local_in_nov = utc_in_nov.to_local(); + + assert_eq!(local_in_feb.tm_mon, 1); + assert_eq!(local_in_feb.tm_hour, 0); + assert_eq!(local_in_feb.tm_utcoff, 0); + assert_eq!(local_in_feb.tm_isdst, 0); + + assert_eq!(local_in_jun.tm_mon, 5); + assert_eq!(local_in_jun.tm_hour, 1); + assert_eq!(local_in_jun.tm_utcoff, 3600); + assert_eq!(local_in_jun.tm_isdst, 1); + + assert_eq!(local_in_nov.tm_mon, 10); + assert_eq!(local_in_nov.tm_hour, 0); + assert_eq!(local_in_nov.tm_utcoff, 0); + assert_eq!(local_in_nov.tm_isdst, 0) + } +} diff --git a/third_party/rust/time-0.1.45/src/parse.rs b/third_party/rust/time-0.1.45/src/parse.rs new file mode 100644 index 0000000000..602bdc5c76 --- /dev/null +++ b/third_party/rust/time-0.1.45/src/parse.rs @@ -0,0 +1,395 @@ +use super::{Timespec, Tm, at_utc, ParseError, NSEC_PER_SEC}; + +/// Parses the time from the string according to the format string. +pub fn strptime(mut s: &str, format: &str) -> Result<Tm, ParseError> { + 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, + }; + let mut chars = format.chars(); + + while let Some(ch) = chars.next() { + if ch == '%' { + if let Some(ch) = chars.next() { + parse_type(&mut s, ch, &mut tm)?; + } + } else { + parse_char(&mut s, ch)?; + } + } + + Ok(tm) +} + +fn parse_type(s: &mut &str, ch: char, tm: &mut Tm) -> Result<(), ParseError> { + match ch { + 'A' => match match_strs(s, &[("Sunday", 0), + ("Monday", 1), + ("Tuesday", 2), + ("Wednesday", 3), + ("Thursday", 4), + ("Friday", 5), + ("Saturday", 6)]) { + Some(v) => { tm.tm_wday = v; Ok(()) } + None => Err(ParseError::InvalidDay) + }, + 'a' => match match_strs(s, &[("Sun", 0), + ("Mon", 1), + ("Tue", 2), + ("Wed", 3), + ("Thu", 4), + ("Fri", 5), + ("Sat", 6)]) { + Some(v) => { tm.tm_wday = v; Ok(()) } + None => Err(ParseError::InvalidDay) + }, + 'B' => match match_strs(s, &[("January", 0), + ("February", 1), + ("March", 2), + ("April", 3), + ("May", 4), + ("June", 5), + ("July", 6), + ("August", 7), + ("September", 8), + ("October", 9), + ("November", 10), + ("December", 11)]) { + Some(v) => { tm.tm_mon = v; Ok(()) } + None => Err(ParseError::InvalidMonth) + }, + 'b' | 'h' => match match_strs(s, &[("Jan", 0), + ("Feb", 1), + ("Mar", 2), + ("Apr", 3), + ("May", 4), + ("Jun", 5), + ("Jul", 6), + ("Aug", 7), + ("Sep", 8), + ("Oct", 9), + ("Nov", 10), + ("Dec", 11)]) { + Some(v) => { tm.tm_mon = v; Ok(()) } + None => Err(ParseError::InvalidMonth) + }, + 'C' => match match_digits_in_range(s, 1, 2, false, 0, 99) { + Some(v) => { tm.tm_year += (v * 100) - 1900; Ok(()) } + None => Err(ParseError::InvalidYear) + }, + 'c' => { + parse_type(s, 'a', tm) + .and_then(|()| parse_char(s, ' ')) + .and_then(|()| parse_type(s, 'b', tm)) + .and_then(|()| parse_char(s, ' ')) + .and_then(|()| parse_type(s, 'e', tm)) + .and_then(|()| parse_char(s, ' ')) + .and_then(|()| parse_type(s, 'T', tm)) + .and_then(|()| parse_char(s, ' ')) + .and_then(|()| parse_type(s, 'Y', tm)) + } + 'D' | 'x' => { + parse_type(s, 'm', tm) + .and_then(|()| parse_char(s, '/')) + .and_then(|()| parse_type(s, 'd', tm)) + .and_then(|()| parse_char(s, '/')) + .and_then(|()| parse_type(s, 'y', tm)) + } + 'd' => match match_digits_in_range(s, 1, 2, false, 1, 31) { + Some(v) => { tm.tm_mday = v; Ok(()) } + None => Err(ParseError::InvalidDayOfMonth) + }, + 'e' => match match_digits_in_range(s, 1, 2, true, 1, 31) { + Some(v) => { tm.tm_mday = v; Ok(()) } + None => Err(ParseError::InvalidDayOfMonth) + }, + 'f' => { + tm.tm_nsec = match_fractional_seconds(s); + Ok(()) + } + 'F' => { + parse_type(s, 'Y', tm) + .and_then(|()| parse_char(s, '-')) + .and_then(|()| parse_type(s, 'm', tm)) + .and_then(|()| parse_char(s, '-')) + .and_then(|()| parse_type(s, 'd', tm)) + } + 'H' => { + match match_digits_in_range(s, 1, 2, false, 0, 23) { + Some(v) => { tm.tm_hour = v; Ok(()) } + None => Err(ParseError::InvalidHour) + } + } + 'I' => { + match match_digits_in_range(s, 1, 2, false, 1, 12) { + Some(v) => { tm.tm_hour = if v == 12 { 0 } else { v }; Ok(()) } + None => Err(ParseError::InvalidHour) + } + } + 'j' => { + match match_digits_in_range(s, 1, 3, false, 1, 366) { + Some(v) => { tm.tm_yday = v - 1; Ok(()) } + None => Err(ParseError::InvalidDayOfYear) + } + } + 'k' => { + match match_digits_in_range(s, 1, 2, true, 0, 23) { + Some(v) => { tm.tm_hour = v; Ok(()) } + None => Err(ParseError::InvalidHour) + } + } + 'l' => { + match match_digits_in_range(s, 1, 2, true, 1, 12) { + Some(v) => { tm.tm_hour = if v == 12 { 0 } else { v }; Ok(()) } + None => Err(ParseError::InvalidHour) + } + } + 'M' => { + match match_digits_in_range(s, 1, 2, false, 0, 59) { + Some(v) => { tm.tm_min = v; Ok(()) } + None => Err(ParseError::InvalidMinute) + } + } + 'm' => { + match match_digits_in_range(s, 1, 2, false, 1, 12) { + Some(v) => { tm.tm_mon = v - 1; Ok(()) } + None => Err(ParseError::InvalidMonth) + } + } + 'n' => parse_char(s, '\n'), + 'P' => match match_strs(s, &[("am", 0), ("pm", 12)]) { + Some(v) => { tm.tm_hour += v; Ok(()) } + None => Err(ParseError::InvalidHour) + }, + 'p' => match match_strs(s, &[("AM", 0), ("PM", 12)]) { + Some(v) => { tm.tm_hour += v; Ok(()) } + None => Err(ParseError::InvalidHour) + }, + 'R' => { + parse_type(s, 'H', tm) + .and_then(|()| parse_char(s, ':')) + .and_then(|()| parse_type(s, 'M', tm)) + } + 'r' => { + parse_type(s, 'I', tm) + .and_then(|()| parse_char(s, ':')) + .and_then(|()| parse_type(s, 'M', tm)) + .and_then(|()| parse_char(s, ':')) + .and_then(|()| parse_type(s, 'S', tm)) + .and_then(|()| parse_char(s, ' ')) + .and_then(|()| parse_type(s, 'p', tm)) + } + 's' => { + match match_digits_i64(s, 1, 18, false) { + Some(v) => { + *tm = at_utc(Timespec::new(v, 0)); + Ok(()) + }, + None => Err(ParseError::InvalidSecondsSinceEpoch) + } + } + 'S' => { + match match_digits_in_range(s, 1, 2, false, 0, 60) { + Some(v) => { tm.tm_sec = v; Ok(()) } + None => Err(ParseError::InvalidSecond) + } + } + //'s' {} + 'T' | 'X' => { + parse_type(s, 'H', tm) + .and_then(|()| parse_char(s, ':')) + .and_then(|()| parse_type(s, 'M', tm)) + .and_then(|()| parse_char(s, ':')) + .and_then(|()| parse_type(s, 'S', tm)) + } + 't' => parse_char(s, '\t'), + 'u' => { + match match_digits_in_range(s, 1, 1, false, 1, 7) { + Some(v) => { tm.tm_wday = if v == 7 { 0 } else { v }; Ok(()) } + None => Err(ParseError::InvalidDayOfWeek) + } + } + 'v' => { + parse_type(s, 'e', tm) + .and_then(|()| parse_char(s, '-')) + .and_then(|()| parse_type(s, 'b', tm)) + .and_then(|()| parse_char(s, '-')) + .and_then(|()| parse_type(s, 'Y', tm)) + } + //'W' {} + 'w' => { + match match_digits_in_range(s, 1, 1, false, 0, 6) { + Some(v) => { tm.tm_wday = v; Ok(()) } + None => Err(ParseError::InvalidDayOfWeek) + } + } + 'Y' => { + match match_digits(s, 4, 4, false) { + Some(v) => { tm.tm_year = v - 1900; Ok(()) } + None => Err(ParseError::InvalidYear) + } + } + 'y' => { + match match_digits_in_range(s, 1, 2, false, 0, 99) { + Some(v) => { tm.tm_year = v; Ok(()) } + None => Err(ParseError::InvalidYear) + } + } + 'Z' => { + if match_str(s, "UTC") || match_str(s, "GMT") { + tm.tm_utcoff = 0; + Ok(()) + } else { + // It's odd, but to maintain compatibility with c's + // strptime we ignore the timezone. + for (i, ch) in s.char_indices() { + if ch == ' ' { + *s = &s[i..]; + return Ok(()) + } + } + *s = ""; + Ok(()) + } + } + 'z' => { + if parse_char(s, 'Z').is_ok() { + tm.tm_utcoff = 0; + Ok(()) + } else { + let sign = if parse_char(s, '+').is_ok() {1} + else if parse_char(s, '-').is_ok() {-1} + else { return Err(ParseError::InvalidZoneOffset) }; + + let hours; + let minutes; + + match match_digits(s, 2, 2, false) { + Some(h) => hours = h, + None => return Err(ParseError::InvalidZoneOffset) + } + + // consume the colon if its present, + // just ignore it otherwise + let _ = parse_char(s, ':'); + + match match_digits(s, 2, 2, false) { + Some(m) => minutes = m, + None => return Err(ParseError::InvalidZoneOffset) + } + + tm.tm_utcoff = sign * (hours * 60 * 60 + minutes * 60); + Ok(()) + } + } + '%' => parse_char(s, '%'), + ch => Err(ParseError::InvalidFormatSpecifier(ch)) + } +} + + +fn match_str(s: &mut &str, needle: &str) -> bool { + if s.starts_with(needle) { + *s = &s[needle.len()..]; + true + } else { + false + } +} + +fn match_strs(ss: &mut &str, strs: &[(&str, i32)]) -> Option<i32> { + for &(needle, value) in strs.iter() { + if match_str(ss, needle) { + return Some(value) + } + } + None +} + +fn match_digits(ss: &mut &str, min_digits : usize, max_digits: usize, ws: bool) -> Option<i32> { + match match_digits_i64(ss, min_digits, max_digits, ws) { + Some(v) => Some(v as i32), + None => None + } +} + +fn match_digits_i64(ss: &mut &str, min_digits : usize, max_digits: usize, ws: bool) -> Option<i64> { + let mut value : i64 = 0; + let mut n = 0; + if ws { + #[allow(deprecated)] // use `trim_start_matches` starting in 1.30 + let s2 = ss.trim_left_matches(" "); + n = ss.len() - s2.len(); + if n > max_digits { return None } + } + let chars = ss[n..].char_indices(); + for (_, ch) in chars.take(max_digits - n) { + match ch { + '0' ... '9' => value = value * 10 + (ch as i64 - '0' as i64), + _ => break, + } + n += 1; + } + + if n >= min_digits && n <= max_digits { + *ss = &ss[n..]; + Some(value) + } else { + None + } +} + +fn match_fractional_seconds(ss: &mut &str) -> i32 { + let mut value = 0; + let mut multiplier = NSEC_PER_SEC / 10; + + let mut chars = ss.char_indices(); + let orig = *ss; + for (i, ch) in &mut chars { + *ss = &orig[i..]; + match ch { + '0' ... '9' => { + // This will drop digits after the nanoseconds place + let digit = ch as i32 - '0' as i32; + value += digit * multiplier; + multiplier /= 10; + } + _ => break + } + } + + value +} + +fn match_digits_in_range(ss: &mut &str, + min_digits : usize, max_digits : usize, + ws: bool, min: i32, max: i32) -> Option<i32> { + let before = *ss; + match match_digits(ss, min_digits, max_digits, ws) { + Some(val) if val >= min && val <= max => Some(val), + _ => { *ss = before; None } + } +} + +fn parse_char(s: &mut &str, c: char) -> Result<(), ParseError> { + match s.char_indices().next() { + Some((i, c2)) => { + if c == c2 { + *s = &s[i + c2.len_utf8()..]; + Ok(()) + } else { + Err(ParseError::UnexpectedCharacter(c, c2)) + } + } + None => Err(ParseError::InvalidTime), + } +} diff --git a/third_party/rust/time-0.1.45/src/sys.rs b/third_party/rust/time-0.1.45/src/sys.rs new file mode 100644 index 0000000000..c5765ca895 --- /dev/null +++ b/third_party/rust/time-0.1.45/src/sys.rs @@ -0,0 +1,996 @@ +#![allow(bad_style)] + +pub use self::inner::*; + +#[cfg(any( + all(target_arch = "wasm32", not(target_os = "emscripten")), + target_env = "sgx" +))] +mod common { + use Tm; + + pub 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; + } + + pub 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 + } +} + +#[cfg(all(target_arch = "wasm32", not(any(target_os = "emscripten", target_os = "wasi"))))] +mod inner { + use std::ops::{Add, Sub}; + use Tm; + use Duration; + use super::common::{time_to_tm, tm_to_time}; + + #[derive(Copy, Clone, Debug, PartialOrd, Ord, PartialEq, Eq)] + pub struct SteadyTime; + + pub fn time_to_utc_tm(sec: i64, tm: &mut Tm) { + time_to_tm(sec, tm); + } + + pub fn time_to_local_tm(sec: i64, tm: &mut Tm) { + // FIXME: Add timezone logic + time_to_tm(sec, tm); + } + + pub fn utc_tm_to_time(tm: &Tm) -> i64 { + tm_to_time(tm) + } + + pub fn local_tm_to_time(tm: &Tm) -> i64 { + // FIXME: Add timezone logic + tm_to_time(tm) + } + + pub fn get_time() -> (i64, i32) { + unimplemented!() + } + + pub fn get_precise_ns() -> u64 { + unimplemented!() + } + + impl SteadyTime { + pub fn now() -> SteadyTime { + unimplemented!() + } + } + + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, _other: SteadyTime) -> Duration { + unimplemented!() + } + } + + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, _other: Duration) -> SteadyTime { + unimplemented!() + } + } + + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(self, _other: Duration) -> SteadyTime { + unimplemented!() + } + } +} + +#[cfg(target_os = "wasi")] +mod inner { + use std::ops::{Add, Sub}; + use Tm; + use Duration; + use super::common::{time_to_tm, tm_to_time}; + use wasi::{clock_time_get, CLOCKID_MONOTONIC, CLOCKID_REALTIME}; + + #[derive(Copy, Clone, Debug, PartialOrd, Ord, PartialEq, Eq)] + pub struct SteadyTime { + t: u64 + } + + pub fn time_to_utc_tm(sec: i64, tm: &mut Tm) { + time_to_tm(sec, tm); + } + + pub fn time_to_local_tm(sec: i64, tm: &mut Tm) { + // FIXME: Add timezone logic + time_to_tm(sec, tm); + } + + pub fn utc_tm_to_time(tm: &Tm) -> i64 { + tm_to_time(tm) + } + + pub fn local_tm_to_time(tm: &Tm) -> i64 { + // FIXME: Add timezone logic + tm_to_time(tm) + } + + pub fn get_time() -> (i64, i32) { + let ts = get_precise_ns(); + ( + ts as i64 / 1_000_000_000, + (ts as i64 % 1_000_000_000) as i32, + ) + } + + pub fn get_precise_ns() -> u64 { + unsafe { clock_time_get(CLOCKID_REALTIME, 1_000_000_000) } + .expect("Host doesn't implement a real-time clock") + } + + impl SteadyTime { + pub fn now() -> SteadyTime { + SteadyTime { + t: unsafe { clock_time_get(CLOCKID_MONOTONIC, 1_000_000_000) } + .expect("Host doesn't implement a monotonic clock"), + } + } + } + + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, other: SteadyTime) -> Duration { + Duration::nanoseconds(self.t as i64 - other.t as i64) + } + } + + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, other: Duration) -> SteadyTime { + self + -other + } + } + + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(self, other: Duration) -> SteadyTime { + let delta = other.num_nanoseconds().unwrap(); + SteadyTime { + t: (self.t as i64 + delta) as u64, + } + } + } +} + +#[cfg(target_env = "sgx")] +mod inner { + use std::ops::{Add, Sub}; + use Tm; + use Duration; + use super::common::{time_to_tm, tm_to_time}; + use std::time::SystemTime; + + /// The number of nanoseconds in seconds. + const NANOS_PER_SEC: u64 = 1_000_000_000; + + #[derive(Copy, Clone, Debug, PartialOrd, Ord, PartialEq, Eq)] + pub struct SteadyTime { + t: Duration + } + + pub fn time_to_utc_tm(sec: i64, tm: &mut Tm) { + time_to_tm(sec, tm); + } + + pub fn time_to_local_tm(sec: i64, tm: &mut Tm) { + // FIXME: Add timezone logic + time_to_tm(sec, tm); + } + + pub fn utc_tm_to_time(tm: &Tm) -> i64 { + tm_to_time(tm) + } + + pub fn local_tm_to_time(tm: &Tm) -> i64 { + // FIXME: Add timezone logic + tm_to_time(tm) + } + + pub fn get_time() -> (i64, i32) { + SteadyTime::now().t.raw() + } + + pub fn get_precise_ns() -> u64 { + // This unwrap is safe because current time is well ahead of UNIX_EPOCH, unless system + // clock is adjusted backward. + let std_duration = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap(); + std_duration.as_secs() * NANOS_PER_SEC + std_duration.subsec_nanos() as u64 + } + + impl SteadyTime { + pub fn now() -> SteadyTime { + // This unwrap is safe because current time is well ahead of UNIX_EPOCH, unless system + // clock is adjusted backward. + let std_duration = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap(); + // This unwrap is safe because duration is well within the limits of i64. + let duration = Duration::from_std(std_duration).unwrap(); + SteadyTime { t: duration } + } + } + + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, other: SteadyTime) -> Duration { + self.t - other.t + } + } + + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, other: Duration) -> SteadyTime { + SteadyTime { t: self.t - other } + } + } + + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(self, other: Duration) -> SteadyTime { + SteadyTime { t: self.t + other } + } + } +} + +#[cfg(unix)] +mod inner { + use libc::{self, time_t}; + use std::mem; + use std::io; + use Tm; + + #[cfg(any(target_os = "macos", target_os = "ios"))] + pub use self::mac::*; + #[cfg(all(not(target_os = "macos"), not(target_os = "ios")))] + pub use self::unix::*; + + #[cfg(any(target_os = "solaris", target_os = "illumos"))] + extern { + static timezone: time_t; + static altzone: time_t; + } + + 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::{set_var, var_os, remove_var}; + extern { + 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_utc_tm(sec: i64, tm: &mut Tm) { + unsafe { + let sec = sec as time_t; + let mut out = mem::zeroed(); + if libc::gmtime_r(&sec, &mut out).is_null() { + panic!("gmtime_r failed: {}", io::Error::last_os_error()); + } + tm_to_rust_tm(&out, 0, tm); + } + } + + 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(all(target_os = "android", target_pointer_width = "32"))] + use libc::timegm64 as timegm; + #[cfg(not(any( + all(target_os = "android", target_pointer_width = "32"), + target_os = "nacl", + target_os = "solaris", + target_os = "illumos" + )))] + use libc::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 } + } + + #[cfg(any(target_os = "macos", target_os = "ios"))] + mod mac { + #[allow(deprecated)] + use libc::{self, timeval, mach_timebase_info}; + #[allow(deprecated)] + use std::sync::{Once, ONCE_INIT}; + use std::ops::{Add, Sub}; + use Duration; + + #[allow(deprecated)] + fn info() -> &'static mach_timebase_info { + static mut INFO: mach_timebase_info = mach_timebase_info { + numer: 0, + denom: 0, + }; + static ONCE: Once = ONCE_INIT; + + unsafe { + ONCE.call_once(|| { + mach_timebase_info(&mut INFO); + }); + &INFO + } + } + + pub fn get_time() -> (i64, i32) { + use std::ptr; + let mut tv = timeval { tv_sec: 0, tv_usec: 0 }; + unsafe { libc::gettimeofday(&mut tv, ptr::null_mut()); } + (tv.tv_sec as i64, tv.tv_usec * 1000) + } + + #[allow(deprecated)] + #[inline] + pub fn get_precise_ns() -> u64 { + unsafe { + let time = libc::mach_absolute_time(); + let info = info(); + time * info.numer as u64 / info.denom as u64 + } + } + + #[derive(Clone, Copy, PartialOrd, Ord, PartialEq, Eq, Debug)] + pub struct SteadyTime { t: u64 } + + impl SteadyTime { + pub fn now() -> SteadyTime { + SteadyTime { t: get_precise_ns() } + } + } + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, other: SteadyTime) -> Duration { + Duration::nanoseconds(self.t as i64 - other.t as i64) + } + } + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, other: Duration) -> SteadyTime { + self + -other + } + } + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(self, other: Duration) -> SteadyTime { + let delta = other.num_nanoseconds().unwrap(); + SteadyTime { + t: (self.t as i64 + delta) as u64 + } + } + } + } + + #[cfg(test)] + pub struct TzReset; + + #[cfg(test)] + pub fn set_los_angeles_time_zone() -> TzReset { + use std::env; + env::set_var("TZ", "America/Los_Angeles"); + ::tzset(); + TzReset + } + + #[cfg(test)] + pub fn set_london_with_dst_time_zone() -> TzReset { + use std::env; + env::set_var("TZ", "Europe/London"); + ::tzset(); + TzReset + } + + #[cfg(all(not(target_os = "macos"), not(target_os = "ios")))] + mod unix { + use std::fmt; + use std::cmp::Ordering; + use std::mem::zeroed; + use std::ops::{Add, Sub}; + use libc; + + use Duration; + + pub fn get_time() -> (i64, i32) { + // SAFETY: libc::timespec is zero initializable. + let mut tv: libc::timespec = unsafe { zeroed() }; + unsafe { libc::clock_gettime(libc::CLOCK_REALTIME, &mut tv); } + (tv.tv_sec as i64, tv.tv_nsec as i32) + } + + pub fn get_precise_ns() -> u64 { + // SAFETY: libc::timespec is zero initializable. + let mut ts: libc::timespec = unsafe { zeroed() }; + unsafe { + libc::clock_gettime(libc::CLOCK_MONOTONIC, &mut ts); + } + (ts.tv_sec as u64) * 1000000000 + (ts.tv_nsec as u64) + } + + #[derive(Copy)] + pub struct SteadyTime { + t: libc::timespec, + } + + impl fmt::Debug for SteadyTime { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + write!(fmt, "SteadyTime {{ tv_sec: {:?}, tv_nsec: {:?} }}", + self.t.tv_sec, self.t.tv_nsec) + } + } + + impl Clone for SteadyTime { + fn clone(&self) -> SteadyTime { + SteadyTime { t: self.t } + } + } + + impl SteadyTime { + pub fn now() -> SteadyTime { + let mut t = SteadyTime { + // SAFETY: libc::timespec is zero initializable. + t: unsafe { zeroed() } + }; + unsafe { + assert_eq!(0, libc::clock_gettime(libc::CLOCK_MONOTONIC, + &mut t.t)); + } + t + } + } + + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, other: SteadyTime) -> Duration { + if self.t.tv_nsec >= other.t.tv_nsec { + Duration::seconds(self.t.tv_sec as i64 - other.t.tv_sec as i64) + + Duration::nanoseconds(self.t.tv_nsec as i64 - other.t.tv_nsec as i64) + } else { + Duration::seconds(self.t.tv_sec as i64 - 1 - other.t.tv_sec as i64) + + Duration::nanoseconds(self.t.tv_nsec as i64 + ::NSEC_PER_SEC as i64 - + other.t.tv_nsec as i64) + } + } + } + + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, other: Duration) -> SteadyTime { + self + -other + } + } + + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(mut self, other: Duration) -> SteadyTime { + let seconds = other.num_seconds(); + let nanoseconds = other - Duration::seconds(seconds); + let nanoseconds = nanoseconds.num_nanoseconds().unwrap(); + + #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))] + type nsec = i64; + #[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))] + type nsec = libc::c_long; + + self.t.tv_sec += seconds as libc::time_t; + self.t.tv_nsec += nanoseconds as nsec; + if self.t.tv_nsec >= ::NSEC_PER_SEC as nsec { + self.t.tv_nsec -= ::NSEC_PER_SEC as nsec; + self.t.tv_sec += 1; + } else if self.t.tv_nsec < 0 { + self.t.tv_sec -= 1; + self.t.tv_nsec += ::NSEC_PER_SEC as nsec; + } + self + } + } + + impl PartialOrd for SteadyTime { + fn partial_cmp(&self, other: &SteadyTime) -> Option<Ordering> { + Some(self.cmp(other)) + } + } + + impl Ord for SteadyTime { + fn cmp(&self, other: &SteadyTime) -> Ordering { + match self.t.tv_sec.cmp(&other.t.tv_sec) { + Ordering::Equal => self.t.tv_nsec.cmp(&other.t.tv_nsec), + ord => ord + } + } + } + + impl PartialEq for SteadyTime { + fn eq(&self, other: &SteadyTime) -> bool { + self.t.tv_sec == other.t.tv_sec && + self.t.tv_nsec == other.t.tv_nsec + } + } + + impl Eq for SteadyTime {} + + } +} + +#[cfg(windows)] +#[allow(non_snake_case)] +mod inner { + use std::io; + use std::mem; + #[allow(deprecated)] + use std::sync::{Once, ONCE_INIT}; + use std::ops::{Add, Sub}; + use {Tm, Duration}; + + use winapi::um::winnt::*; + use winapi::shared::minwindef::*; + use winapi::um::minwinbase::SYSTEMTIME; + use winapi::um::profileapi::*; + use winapi::um::timezoneapi::*; + use winapi::um::sysinfoapi::GetSystemTimeAsFileTime; + + fn frequency() -> i64 { + static mut FREQUENCY: i64 = 0; + #[allow(deprecated)] + static ONCE: Once = ONCE_INIT; + + unsafe { + ONCE.call_once(|| { + let mut l = i64_to_large_integer(0); + QueryPerformanceFrequency(&mut l); + FREQUENCY = large_integer_to_i64(l); + }); + FREQUENCY + } + } + + fn i64_to_large_integer(i: i64) -> LARGE_INTEGER { + unsafe { + let mut large_integer: LARGE_INTEGER = mem::zeroed(); + *large_integer.QuadPart_mut() = i; + large_integer + } + } + + fn large_integer_to_i64(l: LARGE_INTEGER) -> i64 { + unsafe { + *l.QuadPart() + } + } + + const HECTONANOSECS_IN_SEC: i64 = 10_000_000; + const HECTONANOSEC_TO_UNIX_EPOCH: i64 = 11_644_473_600 * HECTONANOSECS_IN_SEC; + + fn time_to_file_time(sec: i64) -> FILETIME { + let t = (((sec * HECTONANOSECS_IN_SEC) + HECTONANOSEC_TO_UNIX_EPOCH)) as u64; + FILETIME { + dwLowDateTime: t as DWORD, + dwHighDateTime: (t >> 32) as DWORD + } + } + + fn file_time_as_u64(ft: &FILETIME) -> u64 { + ((ft.dwHighDateTime as u64) << 32) | (ft.dwLowDateTime as u64) + } + + fn file_time_to_nsec(ft: &FILETIME) -> i32 { + let t = file_time_as_u64(ft) as i64; + ((t % HECTONANOSECS_IN_SEC) * 100) as i32 + } + + fn file_time_to_unix_seconds(ft: &FILETIME) -> i64 { + let t = file_time_as_u64(ft) as i64; + ((t - HECTONANOSEC_TO_UNIX_EPOCH) / HECTONANOSECS_IN_SEC) as i64 + } + + fn system_time_to_file_time(sys: &SYSTEMTIME) -> FILETIME { + unsafe { + let mut ft = mem::zeroed(); + SystemTimeToFileTime(sys, &mut ft); + ft + } + } + + fn tm_to_system_time(tm: &Tm) -> SYSTEMTIME { + let mut sys: SYSTEMTIME = unsafe { mem::zeroed() }; + sys.wSecond = tm.tm_sec as WORD; + sys.wMinute = tm.tm_min as WORD; + sys.wHour = tm.tm_hour as WORD; + sys.wDay = tm.tm_mday as WORD; + sys.wDayOfWeek = tm.tm_wday as WORD; + sys.wMonth = (tm.tm_mon + 1) as WORD; + sys.wYear = (tm.tm_year + 1900) as WORD; + sys + } + + fn system_time_to_tm(sys: &SYSTEMTIME, tm: &mut Tm) { + tm.tm_sec = sys.wSecond as i32; + tm.tm_min = sys.wMinute as i32; + tm.tm_hour = sys.wHour as i32; + tm.tm_mday = sys.wDay as i32; + tm.tm_wday = sys.wDayOfWeek as i32; + tm.tm_mon = (sys.wMonth - 1) as i32; + tm.tm_year = (sys.wYear - 1900) as i32; + tm.tm_yday = yday(tm.tm_year, tm.tm_mon + 1, tm.tm_mday); + + fn yday(year: i32, month: i32, day: i32) -> i32 { + let leap = if month > 2 { + if year % 4 == 0 { 1 } else { 2 } + } else { + 0 + }; + let july = if month > 7 { 1 } else { 0 }; + + (month - 1) * 30 + month / 2 + (day - 1) - leap + july + } + } + + macro_rules! call { + ($name:ident($($arg:expr),*)) => { + if $name($($arg),*) == 0 { + panic!(concat!(stringify!($name), " failed with: {}"), + io::Error::last_os_error()); + } + } + } + + pub fn time_to_utc_tm(sec: i64, tm: &mut Tm) { + let mut out = unsafe { mem::zeroed() }; + let ft = time_to_file_time(sec); + unsafe { + call!(FileTimeToSystemTime(&ft, &mut out)); + } + system_time_to_tm(&out, tm); + tm.tm_utcoff = 0; + } + + pub fn time_to_local_tm(sec: i64, tm: &mut Tm) { + let ft = time_to_file_time(sec); + unsafe { + let mut utc = mem::zeroed(); + let mut local = mem::zeroed(); + call!(FileTimeToSystemTime(&ft, &mut utc)); + call!(SystemTimeToTzSpecificLocalTime(0 as *const _, + &mut utc, &mut local)); + system_time_to_tm(&local, tm); + + let local = system_time_to_file_time(&local); + let local_sec = file_time_to_unix_seconds(&local); + + let mut tz = mem::zeroed(); + GetTimeZoneInformation(&mut tz); + + // SystemTimeToTzSpecificLocalTime already applied the biases so + // check if it non standard + tm.tm_utcoff = (local_sec - sec) as i32; + tm.tm_isdst = if tm.tm_utcoff == -60 * (tz.Bias + tz.StandardBias) { + 0 + } else { + 1 + }; + } + } + + pub fn utc_tm_to_time(tm: &Tm) -> i64 { + unsafe { + let mut ft = mem::zeroed(); + let sys_time = tm_to_system_time(tm); + call!(SystemTimeToFileTime(&sys_time, &mut ft)); + file_time_to_unix_seconds(&ft) + } + } + + pub fn local_tm_to_time(tm: &Tm) -> i64 { + unsafe { + let mut ft = mem::zeroed(); + let mut utc = mem::zeroed(); + let mut sys_time = tm_to_system_time(tm); + call!(TzSpecificLocalTimeToSystemTime(0 as *mut _, + &mut sys_time, &mut utc)); + call!(SystemTimeToFileTime(&utc, &mut ft)); + file_time_to_unix_seconds(&ft) + } + } + + pub fn get_time() -> (i64, i32) { + unsafe { + let mut ft = mem::zeroed(); + GetSystemTimeAsFileTime(&mut ft); + (file_time_to_unix_seconds(&ft), file_time_to_nsec(&ft)) + } + } + + pub fn get_precise_ns() -> u64 { + let mut ticks = i64_to_large_integer(0); + unsafe { + assert!(QueryPerformanceCounter(&mut ticks) == 1); + } + mul_div_i64(large_integer_to_i64(ticks), 1000000000, frequency()) as u64 + + } + + #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)] + pub struct SteadyTime { + t: i64, + } + + impl SteadyTime { + pub fn now() -> SteadyTime { + let mut l = i64_to_large_integer(0); + unsafe { QueryPerformanceCounter(&mut l); } + SteadyTime { t : large_integer_to_i64(l) } + } + } + + impl Sub for SteadyTime { + type Output = Duration; + fn sub(self, other: SteadyTime) -> Duration { + let diff = self.t as i64 - other.t as i64; + Duration::nanoseconds(mul_div_i64(diff, 1000000000, + frequency())) + } + } + + impl Sub<Duration> for SteadyTime { + type Output = SteadyTime; + fn sub(self, other: Duration) -> SteadyTime { + self + -other + } + } + + impl Add<Duration> for SteadyTime { + type Output = SteadyTime; + fn add(mut self, other: Duration) -> SteadyTime { + self.t += (other.num_microseconds().unwrap() * frequency() / + 1_000_000) as i64; + self + } + } + + #[cfg(test)] + pub struct TzReset { + old: TIME_ZONE_INFORMATION, + } + + #[cfg(test)] + impl Drop for TzReset { + fn drop(&mut self) { + unsafe { + call!(SetTimeZoneInformation(&self.old)); + } + } + } + + #[cfg(test)] + pub fn set_los_angeles_time_zone() -> TzReset { + acquire_privileges(); + + unsafe { + let mut tz = mem::zeroed::<TIME_ZONE_INFORMATION>(); + GetTimeZoneInformation(&mut tz); + let ret = TzReset { old: tz }; + tz.Bias = 60 * 8; + call!(SetTimeZoneInformation(&tz)); + return ret + } + } + + #[cfg(test)] + pub fn set_london_with_dst_time_zone() -> TzReset { + acquire_privileges(); + + unsafe { + let mut tz = mem::zeroed::<TIME_ZONE_INFORMATION>(); + GetTimeZoneInformation(&mut tz); + let ret = TzReset { old: tz }; + // Since date set precisely this is 2015's dates + tz.Bias = 0; + tz.DaylightBias = -60; + tz.DaylightDate.wYear = 0; + tz.DaylightDate.wMonth = 3; + tz.DaylightDate.wDayOfWeek = 0; + tz.DaylightDate.wDay = 5; + tz.DaylightDate.wHour = 2; + tz.StandardBias = 0; + tz.StandardDate.wYear = 0; + tz.StandardDate.wMonth = 10; + tz.StandardDate.wDayOfWeek = 0; + tz.StandardDate.wDay = 5; + tz.StandardDate.wHour = 2; + call!(SetTimeZoneInformation(&tz)); + return ret + } + } + + // Ensures that this process has the necessary privileges to set a new time + // zone, and this is all transcribed from: + // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724944%28v=vs.85%29.aspx + #[cfg(test)] + fn acquire_privileges() { + use winapi::um::processthreadsapi::*; + use winapi::um::winbase::LookupPrivilegeValueA; + const SE_PRIVILEGE_ENABLED: DWORD = 2; + #[allow(deprecated)] + static INIT: Once = ONCE_INIT; + + // TODO: FIXME + extern "system" { + fn AdjustTokenPrivileges( + TokenHandle: HANDLE, DisableAllPrivileges: BOOL, NewState: PTOKEN_PRIVILEGES, + BufferLength: DWORD, PreviousState: PTOKEN_PRIVILEGES, ReturnLength: PDWORD, + ) -> BOOL; + } + + INIT.call_once(|| unsafe { + let mut hToken = 0 as *mut _; + call!(OpenProcessToken(GetCurrentProcess(), + TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, + &mut hToken)); + + let mut tkp = mem::zeroed::<TOKEN_PRIVILEGES>(); + assert_eq!(tkp.Privileges.len(), 1); + let c = ::std::ffi::CString::new("SeTimeZonePrivilege").unwrap(); + call!(LookupPrivilegeValueA(0 as *const _, c.as_ptr(), + &mut tkp.Privileges[0].Luid)); + tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; + tkp.PrivilegeCount = 1; + call!(AdjustTokenPrivileges(hToken, FALSE, &mut tkp, 0, + 0 as *mut _, 0 as *mut _)); + }); + } + + + + // Computes (value*numer)/denom without overflow, as long as both + // (numer*denom) and the overall result fit into i64 (which is the case + // for our time conversions). + fn mul_div_i64(value: i64, numer: i64, denom: i64) -> i64 { + let q = value / denom; + let r = value % denom; + // Decompose value as (value/denom*denom + value%denom), + // substitute into (value*numer)/denom and simplify. + // r < denom, so (denom*numer) is the upper bound of (r*numer) + q * numer + r * numer / denom + } + + #[test] + fn test_muldiv() { + assert_eq!(mul_div_i64( 1_000_000_000_001, 1_000_000_000, 1_000_000), + 1_000_000_000_001_000); + assert_eq!(mul_div_i64(-1_000_000_000_001, 1_000_000_000, 1_000_000), + -1_000_000_000_001_000); + assert_eq!(mul_div_i64(-1_000_000_000_001,-1_000_000_000, 1_000_000), + 1_000_000_000_001_000); + assert_eq!(mul_div_i64( 1_000_000_000_001, 1_000_000_000,-1_000_000), + -1_000_000_000_001_000); + assert_eq!(mul_div_i64( 1_000_000_000_001,-1_000_000_000,-1_000_000), + 1_000_000_000_001_000); + } +} |