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use std::fmt;
use std::slice;
use std::num::ParseIntError;
use std::str::FromStr;
#[derive(PartialEq, Eq, Clone)]
pub struct Oid(Vec<u64>);
impl Oid {
pub fn from(s: &[u64]) -> Oid {
Oid(s.to_owned())
}
pub fn to_string(&self) -> String {
if self.0.is_empty() {
return String::new();
}
let mut s = self.0[0].to_string();
for it in self.0.iter().skip(1) {
s.push('.');
s = s + &it.to_string();
}
s
}
pub fn iter(&self) -> slice::Iter<u64> {
self.0.iter()
}
}
impl fmt::Display for Oid {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&self.to_string())
}
}
impl fmt::Debug for Oid {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&format!("OID({})", self.to_string()))
}
}
impl FromStr for Oid {
type Err = ParseIntError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
let v: Result<Vec<_>, ParseIntError> = s.split('.').map(|c| c.parse::<u64>()).collect();
v.map(Oid)
}
}
#[cfg(test)]
mod tests {
use crate::oid::Oid;
use std::str::FromStr;
#[test]
fn test_oid_fmt() {
let oid = Oid::from(&[1, 2, 840, 113_549, 1, 1, 5]);
assert_eq!(format!("{}", oid), "1.2.840.113549.1.1.5".to_owned());
assert_eq!(format!("{:?}", oid), "OID(1.2.840.113549.1.1.5)".to_owned());
}
#[test]
fn test_oid_from_str() {
let oid_ref = Oid::from(&[1, 2, 840, 113_549, 1, 1, 5]);
let oid = Oid::from_str("1.2.840.113549.1.1.5").unwrap();
assert_eq!(oid_ref, oid);
}
}