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yuankunzhang
79 lines
2.3 KiB
Rust
79 lines
2.3 KiB
Rust
// For the full copyright and license information, please view the LICENSE
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// file that was distributed with this source code.
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//! Parse an ISO 8601 date and time item
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//!
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//! The GNU docs state:
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//!
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//! > The ISO 8601 date and time of day extended format consists of an ISO 8601
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//! > date, a ‘T’ character separator, and an ISO 8601 time of day. This format
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//! > is also recognized if the ‘T’ is replaced by a space.
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//! >
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//! > In this format, the time of day should use 24-hour notation. Fractional
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//! > seconds are allowed, with either comma or period preceding the fraction.
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//! > ISO 8601 fractional minutes and hours are not supported. Typically, hosts
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//! > support nanosecond timestamp resolution; excess precision is silently discarded.
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use winnow::{
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combinator::{alt, trace},
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seq, ModalResult, Parser,
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};
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use crate::items::space;
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use super::{
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date::{self, Date},
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primitive::s,
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time::{self, Time},
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};
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#[derive(PartialEq, Debug, Clone, Default)]
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pub struct DateTime {
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pub(crate) date: Date,
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pub(crate) time: Time,
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}
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pub fn parse(input: &mut &str) -> ModalResult<DateTime> {
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seq!(DateTime {
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date: trace("date iso", alt((date::iso1, date::iso2))),
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// Note: the `T` is lowercased by the main parse function
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_: alt((s('t').void(), (' ', space).void())),
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time: trace("time iso", time::iso),
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})
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.parse_next(input)
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}
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#[cfg(test)]
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mod tests {
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use super::{parse, DateTime};
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use crate::items::{date::Date, time::Time};
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#[test]
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fn some_date() {
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let reference = Some(DateTime {
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date: Date {
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day: 10,
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month: 10,
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year: Some(2022),
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},
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time: Time {
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hour: 10,
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minute: 10,
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second: 55.0,
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offset: None,
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},
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});
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for mut s in [
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"2022-10-10t10:10:55",
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"2022-10-10 10:10:55",
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"2022-10-10 t 10:10:55",
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"2022-10-10 10:10:55",
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"2022-10-10 (A comment!) t 10:10:55",
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"2022-10-10 (A comment!) 10:10:55",
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] {
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let old_s = s.to_owned();
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assert_eq!(parse(&mut s).ok(), reference, "Failed string: {old_s}")
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}
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}
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}
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