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#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub enum Prefix {
User {
nick: String,
user: String,
host: String,
},
Server {
host: String,
},
}
impl Prefix {
pub(super) fn parse(input: &str) -> Option<Self> {
if !input.starts_with(':') {
return None;
}
let s = input[1..input.find(' ').unwrap_or_else(|| input.len())].trim();
match s.find('!') {
Some(pos) => {
let at = s.find('@')?;
Some(Prefix::User {
nick: s[..pos].to_string(),
user: s[pos + 1..at].to_string(),
host: s[at + 1..].to_string(),
})
}
None => Some(Prefix::Server {
host: s.to_string(),
}),
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn parse_user() {
let input = ":museun_32[asdf]!~this_is_a_user@0xDEADBEEF.irc.local.1234.host";
assert_eq!(
Prefix::parse(&input).unwrap(),
Prefix::User {
nick: "museun_32[asdf]".into(),
user: "~this_is_a_user".into(),
host: "0xDEADBEEF.irc.local.1234.host".into()
}
)
}
#[test]
fn parse_missing() {
let input = "no_leading_colon";
assert_eq!(Prefix::parse(&input), None)
}
#[test]
fn parse_server() {
let input = ":jtv";
assert_eq!(
Prefix::parse(&input).unwrap(),
Prefix::Server { host: "jtv".into() }
);
let input = ":tmi.twitch.tv";
assert_eq!(
Prefix::parse(&input).unwrap(),
Prefix::Server {
host: "tmi.twitch.tv".into()
}
);
let input = ":irc.some.server.local.domain";
assert_eq!(
Prefix::parse(&input).unwrap(),
Prefix::Server {
host: "irc.some.server.local.domain".into()
}
);
}
}