today/src/eval/command/birthday.rs
2021-12-04 23:34:27 +01:00

51 lines
1.7 KiB
Rust

use chrono::{Datelike, NaiveDate};
use crate::eval::date::Dates;
use crate::files::commands::BirthdaySpec;
use super::super::command::CommandState;
use super::super::{Entry, EntryKind};
impl<'a> CommandState<'a> {
pub fn eval_birthday_spec(&mut self, spec: &BirthdaySpec) {
// This could be optimized by restricting the range via FROM and UNTIL,
// but I don't think that kind of optimization will be necessary any
// time soon.
for year in self.range.years() {
let mut title = self.title();
if spec.year_known {
let age = year - spec.date.year();
if age < 0 {
continue;
}
title.push_str(&format!(" ({})", age));
}
if let Some(date) = spec.date.with_year(year) {
self.add(Entry {
kind: EntryKind::Birthday,
title,
desc: self.desc(),
source: self.source(),
root: Some(date),
dates: Some(Dates::new(date, date)),
});
} else {
assert_eq!(spec.date.month(), 2);
assert_eq!(spec.date.day(), 29);
let first = NaiveDate::from_ymd(year, 2, 28);
let second = NaiveDate::from_ymd(year, 3, 1);
self.add(Entry {
kind: EntryKind::Birthday,
title,
desc: self.desc(),
source: self.source(),
root: Some(first), // This doesn't matter too much
dates: Some(Dates::new(first, second)),
});
}
}
}
}