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/*
* Copyright Stalwart Labs Ltd. See the COPYING
* file at the top-level directory of this distribution.
*
* Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
* option. This file may not be copied, modified, or distributed
* except according to those terms.
*/
use std::borrow::Cow;
use super::Header;
/// Raw e-mail header.
/// Raw headers are not encoded, only line-wrapped.
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
pub struct Raw<'x> {
pub raw: Cow<'x, str>,
}
impl<'x> Raw<'x> {
/// Create a new raw header
pub fn new(raw: impl Into<Cow<'x, str>>) -> Self {
Self { raw: raw.into() }
}
}
impl<'x, T> From<T> for Raw<'x>
where
T: Into<Cow<'x, str>>,
{
fn from(value: T) -> Self {
Self::new(value)
}
}
impl<'x> Header for Raw<'x> {
fn write_header(
&self,
mut output: impl std::io::Write,
mut bytes_written: usize,
) -> std::io::Result<usize> {
for (pos, &ch) in self.raw.as_bytes().iter().enumerate() {
if bytes_written >= 76 && ch.is_ascii_whitespace() && pos < self.raw.len() - 1 {
output.write_all(b"\r\n\t")?;
bytes_written = 1;
}
output.write_all(&[ch])?;
bytes_written += 1;
}
output.write_all(b"\r\n")?;
Ok(0)
}
}