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add Message::all_parts, leaf_parts, other_parts #108

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add Message::all_parts, leaf_parts, other_parts #108

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23 changes: 23 additions & 0 deletions src/core/message.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -458,6 +458,29 @@ impl<'x> Message<'x> {
AttachmentIterator::new(self)
}

/// Returns all parts of the email.
pub fn all_parts(&self) -> impl Iterator<Item = &MessagePart<'_>> + '_ {
(0..).map(move |id| self.part(id))
.take_while(|part| part.is_some())
.filter_map(move |part| part)
}

/// Returns all parts of the email that are not Multipart.
pub fn leaf_parts(&self) -> impl Iterator<Item = &MessagePart<'_>> + '_ {
self.all_parts().filter(|part| !part.is_multipart())
}

/// Returns all parts of the email that are not Multipart, attachments, or HTML
/// or text body parts.
pub fn other_parts(&self) -> impl Iterator<Item = &MessagePart<'_>> + '_ {
let this = self;
self.leaf_parts().filter(move |part| {
!this.attachments().any(|attachment| part == &attachment) &&
!this.html_bodies().any(|html_body_part| part == &html_body_part) &&
!this.text_bodies().any(|text_body_part| part == &text_body_part)
})
}

/// Returns an owned version of the message
pub fn into_owned(self) -> Message<'static> {
Message {
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