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use std::fs;
use std::io::{Read,Write};
use chrono::prelude::*;
use defaults::*;
pub fn write_index_time(index_time: &DateTime<Utc>) {
let mut timefile = fs::File::create(get_indextimefile()).unwrap();
timefile.write_all(format!("{}\n", index_time.timestamp()).as_bytes()).unwrap();
}
pub fn get_index_time() -> Option<DateTime<Utc>> {
let mut timefile = fs::File::open(get_indextimefile()).ok()?;
let mut timestamp_str = String::new();
timefile.read_to_string(&mut timestamp_str).ok()?;
let timestamp = timestamp_str.trim().parse::<i64>().ok()?;
Some(Utc.timestamp(timestamp, 0))
}
#[cfg(test)]
mod tests {
use super::*;
use testutils;
use assert_fs::prelude::*;
#[test]
fn test_write_read() {
let testdir = testutils::prepare_testdir("testdir");
let timestamp = Utc.ymd(1990,01,01).and_hms(1, 1, 0);
write_index_time(×tamp);
testdir.child(".khaleesi/index-time").assert("631155660\n");
let indextime = get_index_time();
assert_eq!(Some(timestamp), indextime);
}
}
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