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fix(users/Profpatsch/netencode): decode U::Text directly into str

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Since `Text` is a scalar, it doesn’t make sense to delay the utf-8
verification to the consumer.

Change-Id: I36e4d228fbf35374d7c1addb4b24828cf6e927e5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2478
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
This commit is contained in:
Profpatsch 2021-02-01 09:16:14 +01:00
parent e91d5e4e61
commit 14f9a22f46
2 changed files with 15 additions and 15 deletions
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22
users/Profpatsch/netencode/netencode.rs
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@ -44,7 +44,7 @@ pub enum U<'a> {
I6(i64),
I7(i128),
// Text
Text(&'a [u8]),
Text(&'a str),
Binary(&'a [u8]),
// Tags
Sum(Tag<&'a str, U<'a>>),
@ -87,7 +87,7 @@ pub fn encode<W: Write>(w: &mut W, u: U) -> std::io::Result<()> {
U::I7(i) => write!(w, "i7:{},", i),
U::Text(s) => {
write!(w, "t{}:", s.len());
w.write(&s);
w.write(s.as_bytes());
write!(w, ",")
}
U::Binary(s) => {
@ -247,16 +247,16 @@ pub mod parse {
/// parse text scalar (`t5:hello,`)
fn text(s: &[u8]) -> IResult<&[u8], T> {
let (s, res) = text_g()(s)?;
Ok((s, T::Text(
std::str::from_utf8(res)
.map_err(|_| nom::Err::Failure((s, ErrorKind::Char)))
.map(|s| s.to_string())?,
)))
let (s, res) = text_g(s)?;
Ok((s, T::Text(res.to_string())))
}
fn text_g() -> impl Fn(&[u8]) -> IResult<&[u8], &[u8]> {
sized('t', ',')
fn text_g(s: &[u8]) -> IResult<&[u8], &str> {
let (s, res) = sized('t', ',')(s)?;
Ok((s,
std::str::from_utf8(res)
.map_err(|_| nom::Err::Failure((s, ErrorKind::Char)))?,
))
}
fn binary<'a>() -> impl Fn(&'a [u8]) -> IResult<&'a [u8], T> {
@ -324,7 +324,7 @@ pub mod parse {
pub fn u_u(s: &[u8]) -> IResult<&[u8], U> {
alt((
map(text_g(), U::Text),
map(text_g, U::Text),
map(binary_g(), U::Binary),
map(unit_t, |()| U::Unit),
map(tag_g(u_u), |t| U::Sum(t)),