hts 0.1.18

Rust binding for htslib
Documentation 
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use std::str::FromStr;

/// Represent a single nucleotide
#[derive(Debug)]
pub enum Nucleotide {
    A,
    T,
    C,
    G,
    N,
}

impl Nucleotide {
    pub fn from_ascii(asc: u8) -> Option<Self> {
        Some(match asc {
            b'A' | b'a' => Nucleotide::A,
            b'T' | b't' => Nucleotide::T,
            b'C' | b'c' => Nucleotide::C,
            b'G' | b'g' => Nucleotide::G,
            b'N' => Nucleotide::N,
            _ => return None,
        })
    }
}

impl FromStr for Nucleotide {
    type Err = ();
    fn from_str(s: &str) -> Result<Self, ()> {
        Ok(match s {
            "A" | "a" => Nucleotide::A,
            "T" | "t" => Nucleotide::T,
            "C" | "c" => Nucleotide::C,
            "G" | "g" => Nucleotide::G,
            "N" => Nucleotide::N,
            _ => {
                return Err(());
            }
        })
    }
}

impl From<u8> for Nucleotide {
    fn from(what: u8) -> Self {
        match what {
            1 => Nucleotide::A,
            2 => Nucleotide::C,
            4 => Nucleotide::G,
            8 => Nucleotide::T,
            _ => Nucleotide::N,
        }
    }
}