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xmpp-parsers: Simplify with String::split_once() instead of splitn(2)

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This directly returns a 2-uple, instead of a Vec which has to be matched
again as if we didn’t know it would return up to two elements.
This commit is contained in:
Link Mauve 2025-11-22 22:40:53 +01:00
commit 9b77b968a9
2 changed files with 16 additions and 31 deletions
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29
parsers/src/bob.rs
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@ -26,26 +26,15 @@ impl FromStr for ContentId {
type Err = Error;
fn from_str(s: &str) -> Result<Self, Error> {
let temp: Vec<_> = s.splitn(2, '@').collect();
let temp: Vec<_> = match temp[..] {
[lhs, rhs] => {
if rhs != "bob.xmpp.org" {
return Err(Error::Other("Wrong domain for cid URI."));
}
lhs.splitn(2, '+').collect()
}
_ => return Err(Error::Other("Missing @ in cid URI.")),
};
let (algo, hex) = match temp[..] {
[lhs, rhs] => {
let algo = match lhs {
"sha1" => Algo::Sha_1,
"sha256" => Algo::Sha_256,
_ => unimplemented!(),
};
(algo, rhs)
}
_ => return Err(Error::Other("Missing + in cid URI.")),
let (lhs, rhs) = s.split_once('@').ok_or(Error::Other("Missing @ in cid URI."))?;
if rhs != "bob.xmpp.org" {
return Err(Error::Other("Wrong domain for cid URI."));
}
let (algo, hex) = lhs.split_once('+').ok_or(Error::Other("Missing + in cid URI."))?;
let algo = match algo {
"sha1" => Algo::Sha_1,
"sha256" => Algo::Sha_256,
_ => unimplemented!(),
};
let hash = Hash::from_hex(algo, hex).map_err(Error::text_parse_error)?;
Ok(ContentId { hash })