Converters of troublesome characters included in Japanese texts. - Half-width-kana[半角ｶﾅ;HANKAKU KANA] -> normal Katakana - Wide-alphanumeric[全角英数;ZENKAKU EISU] <-> normal ASCII
If you need canonicalization of texts including Japanese, consider to use unicode_normalization crate at first. NFD, NFKD, NFC and NFKC can be used. This crate, however, works with you if you are in a niche such as a need of delicate control of Japanese characters for a restrictive character terminal.
Japanese have two syllabary systems Hiragana and Katakana, and Half-width-kana is another notation system of them. In the systems, there are two combinable diacritical marks Voiced-sound-mark and Semi-voiced-sound-mark. Unicode has three independent code points for each of the marks. In addition to it, we often use special style Latin alphabets and Arabic numbers called Wide-alphanumeric in Japanese texts. This small utility converts these codes each other.
Cargo.toml
toml
[dependencies]
unicode-jp = "0.3.0"
src/main.rs ```rust extern crate kana; use kana::*;
fn main() { let s1 = "ﾏﾂｵ ﾊﾞｼｮｳ ｱﾟ"; asserteq!("マツオ バショウ ア ゚", half2kana(s1)); asserteq!("マツオ バショウ ア゚", half2full(s1));
let s2 = "ひ゜ひ゛んは゛";
assert_eq!("ぴびんば", combine(s2));
assert_eq!("ひ ゚ひ ゙んは ゙", vsmark2combi(s2));
let s3 = "＃＆Ｒｕｓｔ－１．６！";
assert_eq!("#&Rust-1.6!", wide2ascii(s3));
} ```
wide2ascii(&str) -> String
convert Wide-alphanumeric into normal ASCII [Ａ -> A]
ascii2wide(&str) -> String
convert normal ASCII characters into Wide-alphanumeric [A -> Ａ]
half2full(&str) -> String
convert Half-width-kana into normal Katakana with diacritical marks separated [ｱﾞﾊﾟ -> ア゙パ]
This method is simple, but tends to cause troubles when rendering.
In such a case, use half2kana() or execute vsmark2{full|half|combi} as post process.
half2kana(&str) -> String
convert Half-width-kana into normal Katakana with diacritical marks combined [ｱﾞﾊﾟ -> アﾞパ]
combine(&str) -> String
combine base characters and diacritical marks on Hiragana/Katakana [かﾞハ゜ -> がパ]
hira2kata(&str) -> String
convert Hiragana into Katakana [あ -> ア]
kata2hira(&str) -> String
convert Katakana into Hiragana [ア -> あ]
vsmark2full(&str) -> String
convert all separated Voiced-sound-marks into full-width style "\u{309B}"
vsmark2half(&str) -> String
convert all separated Voiced-sound-marks into half-width style "\u{FF9E}"
vsmark2combi(&str) -> String
convert all separated Voiced-sound-marks into space+combining style "\u{20}\u{3099}"
nowidespace(&str) -> String
convert Wide-space into normal space [" " -> " "]
space2wide(&str) -> String
convert normal space into Wide-space [" " -> " "]
nowideyen(&str) -> String
convert Wide-yen into Half-width-yen ["￥" -> "¥"]
yen2wide(&str) -> String
convert Half-width-yen into Wide-yen ["¥" -> "￥"]