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feat: remove y from alphabet at runtime

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This commit is contained in:
graelo 2020-06-01 10:32:14 +02:00
parent ea512a8dfc
commit 372781e231
1 changed files with 10 additions and 3 deletions
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13
src/alphabets.rs
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@ -1,5 +1,11 @@
use crate::error;
/// Catalog of available alphabets.
///
/// # Note
///
/// Keep in mind letters 'n' and 'y' are systematically removed at runtime to
/// prevent conflict with navigation and yank/copy keys.
const ALPHABETS: [(&'static str, &'static str); 21] = [
// ("abcd", "abcd"),
("qwerty", "asdfqwerzxcvjklmiuopghtybn"),
@ -24,7 +30,7 @@ const ALPHABETS: [(&'static str, &'static str); 21] = [
("colemak-right-hand", "neioluymjhk"),
(
"longest",
"aoeuqjkxpyhtnsgcrlmwvzfidb;,~<>'@!#$%^&*~1234567890",
"aoeuqjkxpyhtnsgcrlmwvzfidb-;,~<>'@!#$%^&*~1234567890",
),
];
@ -33,13 +39,14 @@ const ALPHABETS: [(&'static str, &'static str); 21] = [
/// # Note
///
/// Letters 'n' and 'N' are systematically removed to prevent conflict with
/// navigation keys (arrows and 'n' 'N').
/// navigation keys (arrows and 'n' 'N'). Letters 'y' and 'Y' are also removed
/// to prevent conflict with yank/copy.
pub fn parse_alphabet(src: &str) -> Result<Alphabet, error::ParseError> {
let alphabet_pair = ALPHABETS.iter().find(|&(name, _letters)| name == &src);
match alphabet_pair {
Some((_name, letters)) => {
let letters = letters.replace(&['n', 'N'][..], "");
let letters = letters.replace(&['n', 'N', 'y', 'Y'][..], "");
Ok(Alphabet(letters.to_string()))
}
None => Err(error::ParseError::UnknownAlphabet),