OXYGENHUB
◆ v0.4.2 oxygen / vendor / iana-time-zone / src / tz_illumos.rs
799 B · Rust · last changed Strata: the cloud stores send through ureq, so every release target links 1 month ago source blame history raw
1 
use std::fs::OpenOptions;
2 
use std::io::{BufRead, BufReader};
3
4 
pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
5 
    // https://illumos.org/man/5/TIMEZONE
6 
    // https://docs.oracle.com/cd/E23824_01/html/821-1473/uc-timezone-4.html
7
8 
    let file = OpenOptions::new().read(true).open("/etc/default/init")?;
9 
    let mut reader = BufReader::with_capacity(1536, file);
10 
    let mut line = String::with_capacity(80);
11 
    loop {
12 
        line.clear();
13 
        let count = reader.read_line(&mut line)?;
14 
        if count == 0 {
15 
            return Err(crate::GetTimezoneError::FailedParsingString);
16 
        } else if line.starts_with("TZ=") {
17 
            line.truncate(line.trim_end().len());
18 
            line.replace_range(..3, "");
19 
            return Ok(line);
20 
        }
21 
    }
22 
}