| // 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; |
| |
| fn time_to_tm(ts: i64, tm: &mut Tm) { |
| let leapyear = |year| -> bool { year % 4 == 0 && (year % 100 != 0 || year % 400 == 0) }; |
| |
| static YTAB: [[i64; 12]; 2] = [ |
| [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], |
| [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], |
| ]; |
| |
| let mut year = 1970; |
| |
| let dayclock = ts % 86400; |
| let mut dayno = ts / 86400; |
| |
| tm.tm_sec = (dayclock % 60) as i32; |
| tm.tm_min = ((dayclock % 3600) / 60) as i32; |
| tm.tm_hour = (dayclock / 3600) as i32; |
| tm.tm_wday = ((dayno + 4) % 7) as i32; |
| loop { |
| let yearsize = if leapyear(year) { 366 } else { 365 }; |
| if dayno >= yearsize { |
| dayno -= yearsize; |
| year += 1; |
| } else { |
| break; |
| } |
| } |
| tm.tm_year = (year - 1900) as i32; |
| tm.tm_yday = dayno as i32; |
| let mut mon = 0; |
| while dayno >= YTAB[if leapyear(year) { 1 } else { 0 }][mon] { |
| dayno -= YTAB[if leapyear(year) { 1 } else { 0 }][mon]; |
| mon += 1; |
| } |
| tm.tm_mon = mon as i32; |
| tm.tm_mday = dayno as i32 + 1; |
| tm.tm_isdst = 0; |
| } |
| |
| fn tm_to_time(tm: &Tm) -> i64 { |
| let mut y = tm.tm_year as i64 + 1900; |
| let mut m = tm.tm_mon as i64 + 1; |
| if m <= 2 { |
| y -= 1; |
| m += 12; |
| } |
| let d = tm.tm_mday as i64; |
| let h = tm.tm_hour as i64; |
| let mi = tm.tm_min as i64; |
| let s = tm.tm_sec as i64; |
| (365 * y + y / 4 - y / 100 + y / 400 + 3 * (m + 1) / 5 + 30 * m + d - 719561) * 86400 |
| + 3600 * h |
| + 60 * mi |
| + s |
| } |
| |
| pub 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) |
| } |