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utf8_to_array macro

pbs
Jake Probst 5 years ago
parent
commit
ac5919e44d
  1. 35
      src/common/util.rs

35
src/common/util.rs

@ -7,5 +7,40 @@ pub fn array_to_utf8<const X: usize>(array: [u8; X]) -> Result<String, std::stri
} }
s s
}) })
}
/*pub fn utf8_to_array<const X: usize>(string: String) -> Result<[u8; X], std::string::FromUtf8Error> {
let mut array = [0u8; X];
let bytes = string.as_bytes();
array[..bytes.len()].clone_from_slice(&bytes);
Ok(array)
}*/
#[macro_export]
macro_rules! utf8_to_array {
($s: expr, $size: expr) => {
{
let mut array = [0u8; $size];
let bytes = $s.as_bytes();
array[..bytes.len()].clone_from_slice(&bytes);
array
}
}
}
#[cfg(test)]
mod test {
#[test]
fn test_utf8_to_array() {
let s = "asdf".to_owned();
let a = utf8_to_array!(s, 8);
let mut e = [0u8; 8];
e[..4].clone_from_slice(b"asdf");
assert!(a == e);
}
} }
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