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use std::path::Path;
use time::OffsetDateTime;
#[derive(Debug)]
pub struct TimeDb {
data: Vec<TimedFile>,
}
impl TimeDb {
pub fn load<P: AsRef<Path>>(path: P) -> Self {
let file = std::fs::read_to_string(path).unwrap();
let mut data = vec![];
for line in file.lines() {
let it = TimedFile::parse_line(line);
data.push(it);
}
Self { data }
}
pub fn get_times(&self, path: &str) -> Option<&TimedFile> {
for file in &self.data {
if &file.path == path {
return Some(file);
}
}
None
}
}
#[derive(Debug)]
pub struct TimedFile {
path: String,
pub creation: Option<OffsetDateTime>,
pub modification: Option<OffsetDateTime>,
pub access: Option<OffsetDateTime>,
}
impl TimedFile {
pub fn parse_line<S: AsRef<str>>(raw: S) -> Self {
let mut values = raw.as_ref().rsplitn(4, ",").collect::<Vec<&str>>();
values.reverse();
let to_odt = |str: &&str| -> Option<OffsetDateTime> {
str.parse::<u64>()
.ok()
.map(|t| OffsetDateTime::from_unix_timestamp(t as i64).unwrap())
};
let path = unescape(values[0]);
let creation = values.get(1).map(to_odt).flatten();
let modification = values.get(2).map(to_odt).flatten();
let access = values.get(3).map(to_odt).flatten();
Self {
path,
creation,
modification,
access,
}
}
}
// Permissive unescape. Everything that's not \\ or \, is passed
// unchanged, while those get their slash removed
fn unescape<S: AsRef<str>>(raw: S) -> String {
let raw = raw.as_ref();
if !raw.contains('\\') {
return raw.to_owned();
}
let mut unescape = String::with_capacity(raw.len());
let mut escaped = false;
for ch in raw.chars() {
match (escaped, ch) {
(false, '\\') => {
escaped = true;
}
(false, c) => unescape.push(c),
(true, '\\') | (true, ',') => {
unescape.push(ch);
escaped = false;
}
(true, c) => {
unescape.push('\\');
unescape.push(c);
escaped = false;
}
}
}
unescape
}
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