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message: parse the IRCv3 tag block in a single pass instead of four separate split(';') scans plus an intermediate Vec for ctags

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Jean Chevronnet 2026-08-19 02:54:24 +00:00
parent 1aa02a08b9
commit fc9ae4faad
1 changed files with 16 additions and 14 deletions
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30
src/message.rs
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@ -57,20 +57,22 @@ pub fn parse(line: &str) -> Option<Message> {
let mut concat = false;
if let Some(after_at) = rest.strip_prefix('@') {
let (tags, r) = after_at.split_once(' ')?;
ctags = tags
.split(';')
.filter(|t| t.starts_with('+'))
.collect::<Vec<_>>()
.join(";");
label = tags
.split(';')
.find_map(|t| t.strip_prefix("label="))
.map(|v| v.to_string());
batch = tags
.split(';')
.find_map(|t| t.strip_prefix("batch="))
.map(|v| v.to_string());
concat = tags.split(';').any(|t| t == "draft/multiline-concat");
// single pass over the tag block (was four separate split(';') scans plus an
// intermediate Vec for ctags)
for t in tags.split(';') {
if t.starts_with('+') {
if !ctags.is_empty() {
ctags.push(';');
}
ctags.push_str(t);
} else if let Some(v) = t.strip_prefix("label=") {
label = Some(v.to_string());
} else if let Some(v) = t.strip_prefix("batch=") {
batch = Some(v.to_string());
} else if t == "draft/multiline-concat" {
concat = true;
}
}
rest = r.trim_start_matches(' ');
}