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age-core: Use str::from_utf8_unchecked in read::arbitrary_string

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The input bytes were already restricted to ASCII characters with values
33 to 126; an arbitrary sequence of these will always be valid UTF-8.
This commit is contained in:
Jack Grigg 2021-08-07 22:10:09 +01:00
parent e608cf32b4
commit 7467e7b447
2 changed files with 3 additions and 3 deletions
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5
age-core/src/format.rs
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@ -120,8 +120,9 @@ pub mod read {
/// ... an arbitrary string is a sequence of ASCII characters with values 33 to 126.
/// ```
pub fn arbitrary_string(input: &[u8]) -> IResult<&[u8], &str> {
map(take_while1(|c| c >= 33 && c <= 126), |bytes| {
std::str::from_utf8(bytes).expect("ASCII is valid UTF-8")
map(take_while1(|c| (33..=126).contains(&c)), |bytes| {
// Safety: ASCII bytes are valid UTF-8
unsafe { std::str::from_utf8_unchecked(bytes) }
})(input)
}

1
age-core/src/lib.rs
View file

@ -1,4 +1,3 @@
#![forbid(unsafe_code)]
// Catch documentation errors caused by code changes.
#![deny(broken_intra_doc_links)]