3 releases (stable)

1.1.0 Jan 26, 2023
1.0.0 Sep 27, 2022
1.0.0-beta1 Aug 5, 2022

#16 in Internationalization (i18n)

Download history 204/week @ 2022-12-04 188/week @ 2022-12-11 182/week @ 2022-12-18 158/week @ 2022-12-25 158/week @ 2023-01-01 380/week @ 2023-01-08 317/week @ 2023-01-15 669/week @ 2023-01-22 382/week @ 2023-01-29 543/week @ 2023-02-05 733/week @ 2023-02-12 893/week @ 2023-02-19 873/week @ 2023-02-26 1031/week @ 2023-03-05 940/week @ 2023-03-12 1187/week @ 2023-03-19

4,131 downloads per month
Used in 14 crates (5 directly)

Unicode-DFS-2016

2MB
16K SLoC

icu_locid_transform crates.io

Canonicalization of locale identifiers based on CLDR data.

This module is published as its own crate (icu_locid_transform) and as part of the icu crate. See the latter for more details on the ICU4X project.

It currently supports locale canonicalization based upon the canonicalization algorithm from UTS #35: Unicode LDML 3. LocaleId Canonicalization, as well as the minimize and maximize likely subtags algorithms as described in UTS #35: Unicode LDML 3. Likely Subtags.

The maximize method potentially updates a passed in locale in place depending up the results of running the 'Add Likely Subtags' algorithm from UTS #35: Unicode LDML 3. Likely Subtags.

This minimize method returns a new Locale that is the result of running the 'Remove Likely Subtags' algorithm from UTS #35: Unicode LDML 3. Likely Subtags.

Examples

use icu::locid::Locale;
use icu::locid_transform::{LocaleCanonicalizer, TransformResult};

let lc = LocaleCanonicalizer::try_new_unstable(&icu_testdata::unstable())
    .expect("create failed");

let mut locale: Locale = "ja-Latn-fonipa-hepburn-heploc"
    .parse()
    .expect("parse failed");
assert_eq!(lc.canonicalize(&mut locale), TransformResult::Modified);
assert_eq!(locale, "ja-Latn-alalc97-fonipa".parse::<Locale>().unwrap());
use icu::locid::locale;
use icu::locid_transform::{LocaleExpander, TransformResult};

let lc = LocaleExpander::try_new_unstable(&icu_testdata::unstable())
    .expect("create failed");

let mut locale = locale!("zh-CN");
assert_eq!(lc.maximize(&mut locale), TransformResult::Modified);
assert_eq!(locale, locale!("zh-Hans-CN"));

let mut locale = locale!("zh-Hant-TW");
assert_eq!(lc.maximize(&mut locale), TransformResult::Unmodified);
assert_eq!(locale, locale!("zh-Hant-TW"));
use icu::locid::locale;
use icu::locid_transform::{LocaleExpander, TransformResult};
use writeable::assert_writeable_eq;

let lc = LocaleExpander::try_new_unstable(&icu_testdata::unstable())
    .expect("create failed");

let mut locale = locale!("zh-Hans-CN");
assert_eq!(lc.minimize(&mut locale), TransformResult::Modified);
assert_eq!(locale, locale!("zh"));

let mut locale = locale!("zh");
assert_eq!(lc.minimize(&mut locale), TransformResult::Unmodified);
assert_eq!(locale, locale!("zh"));

More Information

For more information on development, authorship, contributing etc. please visit ICU4X home page.

Dependencies