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use soft_ascii_string::SoftAsciiStr;
use internals::encoder::{EncodableInHeader, EncodingWriter};
use internals::error::EncodingError;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
/// The TransferEnecoding header component mainly used by the ContentTransferEncodingHeader.
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum TransferEncoding {
#[cfg_attr(feature = "serde", serde(rename = "7bit"))]
_7Bit,
#[cfg_attr(feature = "serde", serde(rename = "8bit"))]
_8Bit,
#[cfg_attr(feature = "serde", serde(rename = "binary"))]
Binary,
#[cfg_attr(feature = "serde", serde(rename = "quoted-printable"))]
QuotedPrintable,
#[cfg_attr(feature = "serde", serde(rename = "base64"))]
Base64,
}
impl TransferEncoding {
pub fn repr(&self) -> &SoftAsciiStr {
use self::TransferEncoding::*;
match *self {
_7Bit => SoftAsciiStr::from_unchecked("7bit"),
_8Bit => SoftAsciiStr::from_unchecked("8bit"),
Binary => SoftAsciiStr::from_unchecked("binary"),
QuotedPrintable => SoftAsciiStr::from_unchecked("quoted-printable"),
Base64 => SoftAsciiStr::from_unchecked("base64"),
}
}
}
impl EncodableInHeader for TransferEncoding {
fn encode(&self, handle: &mut EncodingWriter) -> Result<(), EncodingError> {
handle.write_str(self.repr())?;
Ok(())
}
fn boxed_clone(&self) -> Box<EncodableInHeader> {
Box::new(self.clone())
}
}
#[cfg(test)]
mod test {
use super::TransferEncoding;
ec_test! {_7bit, {
TransferEncoding::_7Bit
} => ascii => [
Text "7bit"
]}
ec_test! {_8bit, {
TransferEncoding::_8Bit
} => ascii => [
Text "8bit"
]}
ec_test! {binary, {
TransferEncoding::Binary
} => ascii => [
Text "binary"
]}
ec_test! {base64, {
TransferEncoding::Base64
} => ascii => [
Text "base64"
]}
ec_test! {quoted_printable, {
TransferEncoding::QuotedPrintable
} => ascii => [
Text "quoted-printable"
]}
#[cfg(feature = "serde")]
mod serde {
use super::TransferEncoding;
use serde_test::{assert_tokens, Token};
macro_rules! serde_token_tests {
($([$lname:ident, $hname:ident, $s:tt]),*) => ($(
#[test]
fn $lname() {
assert_tokens(&TransferEncoding::$hname, &[
Token::UnitVariant {
name: "TransferEncoding",
variant: $s
}
])
}
)*);
}
serde_token_tests! {
[_7bit, _7Bit, "7bit"],
[_8bit, _8Bit, "8bit"],
[binary, Binary, "binary"],
[quoted_printable, QuotedPrintable, "quoted-printable"],
[base64, Base64, "base64"]
}
}
}
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