cipher-crypt 0.8.0

A cryptographic tomb of ciphers forgotten by time.
Documentation 
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//! Contains helpful constants and functions used in Morse-based ciphers.
//!

// The Morse alphabet (Obtained from https://morsecode.scphillips.com/morse2.html)
const MORSE_ALPHABET: [(&'static str, &'static str); 49] = [
    ("A" , ".-"    ), ("B" , "-..."  ), ("C" , "-.-."  ), ("D" , "-.."   ), ("E" , "."     ),
    ("F" , "..-."  ), ("G" , "--."   ), ("H" , "...."  ), ("I" , ".."    ), ("J" , ".---"  ),
    ("K" , "-.-"   ), ("L" , ".-.."  ), ("M" , "--"    ), ("N" , "-."    ), ("O" , "---"   ),
    ("P" , ".--."  ), ("Q" , "--.-"  ), ("R" , ".-."   ), ("S" , "..."   ), ("T" , "-"     ),
    ("U" , "..-"   ), ("V" , "...-"  ), ("W" , ".--"   ), ("X" , "-..-"  ), ("Y" , "-.--"  ),
    ("Z" , "--.."  ),
    ("1" , ".----" ), ("2" , "..---" ), ("3" , "...--" ), ("4" , "....-" ), ("5" , "....." ),
    ("6" , "-...." ), ("7" , "--..." ), ("8" , "---.." ), ("9" , "----." ), ("0" , "-----" ),
    ("." , ".-.-.-"), ("," , "--..--"), (":" , "---..."), ("\"", ".----."), ("'", ".-..-." ),
    ("!" , "-.-.--"), ("?" , "..--.."), ("@" , ".--.-."), ("-" , "-....-"), (";" , "-.-.-."),
    ("(" , "-.--." ), (")" , "-.--.-"), ("=" , "-...-" )
];

/// Attempts to decode a morsecode sequence into a character of the known alphabet.
///
/// Will return None if the Morse code isn't present in the alphabet
pub fn decode_sequence(seq: &str) -> Option<&'static str> {
    match MORSE_ALPHABET.iter().find(|&e| e.1 == seq) {
        Some(entry) => Some(entry.0),
        None => None
    }
}

/// Attempts to convert a character into a morse code sequence
///
/// Will return None if the character isn't present in the known alphabet
pub fn encode_character(c: char) -> Option<&'static str> {
    match MORSE_ALPHABET.iter().find(|&e| e.0 == c.to_uppercase().to_string()) {
        Some(entry) => Some(entry.1),
        None => None
    }
}