1 files changed, 131 insertions, 0 deletions
diff --git a/third_party/rust/chrono/src/sys/windows.rs b/third_party/rust/chrono/src/sys/windows.rs
new file mode 100644
index 0000000000..3f90338e41
--- /dev/null
+++ b/third_party/rust/chrono/src/sys/windows.rs
@@ -0,0 +1,131 @@
+// 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.
+
+use super::Tm;
+use std::io;
+use std::mem;
+
+use winapi::shared::minwindef::*;
+use winapi::um::minwinbase::SYSTEMTIME;
+use winapi::um::timezoneapi::*;
+
+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_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_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)
+    }
+}