imag/libimagtimeui/src/date.rs

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//
// imag - the personal information management suite for the commandline
// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; version
// 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
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use chrono::naive::date::NaiveDate as ChronoNaiveDate;
use parse::Parse;
pub struct Date {
year: i32,
month: u32,
day: u32,
}
impl Date {
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pub fn new(year: i32, month: u32, day: u32) -> Date {
Date {
year: year,
month: month,
day: day,
}
}
pub fn year(&self) -> i32 {
self.year
}
pub fn month(&self) -> u32 {
self.month
}
pub fn day(&self) -> u32 {
self.day
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}
}
impl Into<ChronoNaiveDate> for Date {
fn into(self) -> ChronoNaiveDate {
ChronoNaiveDate::from_ymd(self.year, self.month, self.day)
}
}
impl Parse for Date {
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/// Parse the date part of the full string into a Date object
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fn parse(s: &str) -> Option<Date> {
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use std::str::FromStr;
use regex::Regex;
use parse::time_parse_regex;
lazy_static! {
static ref R: Regex = Regex::new(time_parse_regex()).unwrap();
}
R.captures(s)
.and_then(|capts| {
let year = capts.name("Y").and_then(|o| FromStr::from_str(o.as_str()).ok());
let month = capts.name("M").and_then(|o| FromStr::from_str(o.as_str()).ok());
let day = capts.name("D").and_then(|o| FromStr::from_str(o.as_str()).ok());
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let year = match year {
None => {
debug!("No year");
return None;
},
Some(x) => x,
};
let month = match month {
None => {
debug!("No month");
return None;
},
Some(x) => x,
};
let day = match day {
None => {
debug!("No day");
return None;
},
Some(x) => x,
};
Some(Date::new(year, month, day))
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})
}
}
#[cfg(test)]
mod test {
use super::Date;
use parse::Parse;
#[test]
fn test_valid() {
let s = "2016-02-01";
let d = Date::parse(s);
assert!(d.is_some());
let d = d.unwrap();
assert_eq!(2016, d.year());
assert_eq!(2, d.month());
assert_eq!(1, d.day());
}
#[test]
fn test_invalid() {
assert!(Date::parse("2016-021-01").is_none());
assert!(Date::parse("2016-02-012").is_none());
assert!(Date::parse("2016-02-0").is_none());
assert!(Date::parse("2016-0-02").is_none());
assert!(Date::parse("2016-02").is_none());
assert!(Date::parse("2016-2").is_none());
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}
}