blob: 17b099b10a7f657e6658333b010af5190ab1282a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
use std::fs::OpenOptions;
use std::io::{BufRead, BufReader};
pub(crate) fn get_timezone_inner() -> Result<String, crate::GetTimezoneError> {
// https://illumos.org/man/5/TIMEZONE
// https://docs.oracle.com/cd/E23824_01/html/821-1473/uc-timezone-4.html
let file = OpenOptions::new().read(true).open("/etc/default/init")?;
let mut reader = BufReader::with_capacity(1536, file);
let mut line = String::with_capacity(80);
loop {
line.clear();
let count = reader.read_line(&mut line)?;
if count == 0 {
return Err(crate::GetTimezoneError::FailedParsingString);
} else if line.starts_with("TZ=") {
line.truncate(line.trim_end().len());
line.replace_range(..3, "");
return Ok(line);
}
}
}
|