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mimeparser: simplify get_subject() and get_rfc724_mid

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This commit is contained in:
Alexander Krotov
2020-01-11 15:43:45 +03:00
committed by holger krekel
parent fde8fb960b
commit c7b2bdfaac
1 changed files with 5 additions and 13 deletions
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18
src/mimeparser.rs
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@@ -367,14 +367,9 @@ impl<'a> MimeMessage<'a> {
}
pub(crate) fn get_subject(&self) -> Option<String> {
if let Some(s) = self.get(HeaderDef::Subject) {
if s.is_empty() {
return None;
}
Some(s.to_string())
} else {
None
}
self.get(HeaderDef::Subject)
.filter(|s| !s.is_empty())
.map(|s| s.to_string())
}
pub fn get(&self, headerdef: HeaderDef) -> Option<&String> {
@@ -713,11 +708,8 @@ impl<'a> MimeMessage<'a> {
}
pub fn get_rfc724_mid(&self) -> Option<String> {
if let Some(msgid) = self.get(HeaderDef::MessageId) {
parse_message_id(msgid)
} else {
None
}
self.get(HeaderDef::MessageId)
.and_then(|msgid| parse_message_id(msgid))
}
fn merge_headers(&mut self, fields: &[mailparse::MailHeader<'_>]) {