proxmox/proxmox/src/tools/parse.rs
Wolfgang Bumiller 5dd21ee89b switch from failure to anyhow
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
2020-04-17 18:34:21 +02:00

15 lines
349 B
Rust

//! Some parsing utilities.
use anyhow::{bail, Error};
/// Parse a hexadecimal digit into a byte.
#[inline]
pub fn hex_nibble(c: u8) -> Result<u8, Error> {
Ok(match c {
b'0'..=b'9' => c - b'0',
b'a'..=b'f' => c - b'a' + 0xa,
b'A'..=b'F' => c - b'A' + 0xa,
_ => bail!("not a hex digit: {}", c as char),
})
}