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Avoid useless allocations while formatting headers (#599)

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This commit is contained in:
Paolo Barbolini
2021-04-06 19:02:37 +02:00
committed by GitHub
parent 0e74042b4e
commit 61b08814c9
2 changed files with 9 additions and 4 deletions
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8
src/message/mimebody.rs
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@@ -1,3 +1,5 @@
use std::io::Write;
use crate::message::{
header::{ContentTransferEncoding, ContentType, Header, Headers},
EmailFormat, IntoBody,
@@ -132,7 +134,8 @@ impl SinglePart {
impl EmailFormat for SinglePart {
fn format(&self, out: &mut Vec<u8>) {
out.extend_from_slice(self.headers.to_string().as_bytes());
write!(out, "{}", self.headers)
.expect("A Write implementation panicked while formatting headers");
out.extend_from_slice(b"\r\n");
out.extend_from_slice(&self.body);
out.extend_from_slice(b"\r\n");
@@ -390,7 +393,8 @@ impl MultiPart {
impl EmailFormat for MultiPart {
fn format(&self, out: &mut Vec<u8>) {
out.extend_from_slice(self.headers.to_string().as_bytes());
write!(out, "{}", self.headers)
.expect("A Write implementation panicked while formatting headers");
out.extend_from_slice(b"\r\n");
let boundary = self.boundary();

5
src/message/mod.rs
View File

@@ -250,7 +250,7 @@ mod mailbox;
mod mimebody;
mod utf8_b;
use std::{convert::TryFrom, time::SystemTime};
use std::{convert::TryFrom, io::Write, time::SystemTime};
use uuid::Uuid;
@@ -533,7 +533,8 @@ impl Message {
impl EmailFormat for Message {
fn format(&self, out: &mut Vec<u8>) {
out.extend_from_slice(self.headers.to_string().as_bytes());
write!(out, "{}", self.headers)
.expect("A Write implementation panicked while formatting headers");
match &self.body {
MessageBody::Mime(p) => p.format(out),