diff options
Diffstat (limited to 'vendor/time-0.1.43/src/display.rs')
| -rw-r--r-- | vendor/time-0.1.43/src/display.rs | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/vendor/time-0.1.43/src/display.rs b/vendor/time-0.1.43/src/display.rs new file mode 100644 index 000000000..705b43078 --- /dev/null +++ b/vendor/time-0.1.43/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} +} |