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feat(i18n): Add NgLocaleLocalization which returns plural cases given a locale (#10744)

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This commit is contained in:
Victor Berchet
2016-08-12 14:46:06 -07:00
committed by vikerman
parent 6580d67875
commit 161a4dd15f
8 changed files with 841 additions and 5 deletions
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2
modules/@angular/common/index.ts
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@ -14,7 +14,7 @@ export * from './src/pipes';
export * from './src/directives';
export * from './src/common_directives';
export * from './src/location';
export {NgLocalization} from './src/localization';
export {NgLocalization, NgLocaleLocalization, Plural, getPluralCase} from './src/localization';
// Note: This does not contain the location providers,
// as they need some platform specific implementations to work.

399
modules/@angular/common/src/localization.ts
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@ -6,11 +6,13 @@
* found in the LICENSE file at https://angular.io/license
*/
import {Injectable} from '@angular/core';
/**
* @experimental
*/
export abstract class NgLocalization { abstract getPluralCategory(value: any): string; }
/**
* Returns the plural category for a given value.
* - "=value" when the case exists,
@ -24,3 +26,400 @@ export function getPluralCategory(
return cases.indexOf(nbCase) > -1 ? nbCase : ngLocalization.getPluralCategory(value);
}
/**
* Returns the plural case based on the locale
*
* @experimental
*/
@Injectable()
export class NgLocaleLocalization extends NgLocalization {
constructor(private _locale: string) { super(); }
getPluralCategory(value: any): string {
const plural = getPluralCase(this._locale, value);
switch (plural) {
case Plural.Zero:
return 'zero';
case Plural.One:
return 'one';
case Plural.Two:
return 'two';
case Plural.Few:
return 'few';
case Plural.Many:
return 'many';
default:
return 'other';
}
}
}
// This is generated code DO NOT MODIFY
// see angular2/script/cldr/gen_plural_rules.js
/** @experimental */
export enum Plural {
Zero,
One,
Two,
Few,
Many,
Other
}
/**
* Returns the plural case based on the locale
*
* @experimental
*/
export function getPluralCase(locale: string, nLike: number | string): Plural {
// TODO(vicb): lazy compute
if (typeof nLike === 'string') {
nLike = parseInt(<string>nLike, 10);
}
const n: number = nLike as number;
const nDecimal = n.toString().replace(/^[^.]*\.?/, '');
const i = Math.floor(Math.abs(n));
const v = nDecimal.length;
const f = parseInt(nDecimal, 10);
const t = parseInt(n.toString().replace(/^[^.]*\.?|0+$/g, ''), 10) || 0;
const lang = locale.split('_')[0].toLowerCase();
switch (lang) {
case 'af':
case 'asa':
case 'az':
case 'bem':
case 'bez':
case 'bg':
case 'brx':
case 'ce':
case 'cgg':
case 'chr':
case 'ckb':
case 'ee':
case 'el':
case 'eo':
case 'es':
case 'eu':
case 'fo':
case 'fur':
case 'gsw':
case 'ha':
case 'haw':
case 'hu':
case 'jgo':
case 'jmc':
case 'ka':
case 'kk':
case 'kkj':
case 'kl':
case 'ks':
case 'ksb':
case 'ky':
case 'lb':
case 'lg':
case 'mas':
case 'mgo':
case 'ml':
case 'mn':
case 'nb':
case 'nd':
case 'ne':
case 'nn':
case 'nnh':
case 'nyn':
case 'om':
case 'or':
case 'os':
case 'ps':
case 'rm':
case 'rof':
case 'rwk':
case 'saq':
case 'seh':
case 'sn':
case 'so':
case 'sq':
case 'ta':
case 'te':
case 'teo':
case 'tk':
case 'tr':
case 'ug':
case 'uz':
case 'vo':
case 'vun':
case 'wae':
case 'xog':
if (n === 1) return Plural.One;
return Plural.Other;
case 'agq':
case 'bas':
case 'cu':
case 'dav':
case 'dje':
case 'dua':
case 'dyo':
case 'ebu':
case 'ewo':
case 'guz':
case 'kam':
case 'khq':
case 'ki':
case 'kln':
case 'kok':
case 'ksf':
case 'lrc':
case 'lu':
case 'luo':
case 'luy':
case 'mer':
case 'mfe':
case 'mgh':
case 'mua':
case 'mzn':
case 'nmg':
case 'nus':
case 'qu':
case 'rn':
case 'rw':
case 'sbp':
case 'twq':
case 'vai':
case 'yav':
case 'yue':
case 'zgh':
case 'ak':
case 'ln':
case 'mg':
case 'pa':
case 'ti':
if (n === Math.floor(n) && n >= 0 && n <= 1) return Plural.One;
return Plural.Other;
case 'am':
case 'as':
case 'bn':
case 'fa':
case 'gu':
case 'hi':
case 'kn':
case 'mr':
case 'zu':
if (i === 0 || n === 1) return Plural.One;
return Plural.Other;
case 'ar':
if (n === 0) return Plural.Zero;
if (n === 1) return Plural.One;
if (n === 2) return Plural.Two;
if (n % 100 === Math.floor(n % 100) && n % 100 >= 3 && n % 100 <= 10) return Plural.Few;
if (n % 100 === Math.floor(n % 100) && n % 100 >= 11 && n % 100 <= 99) return Plural.Many;
return Plural.Other;
case 'ast':
case 'ca':
case 'de':
case 'en':
case 'et':
case 'fi':
case 'fy':
case 'gl':
case 'it':
case 'nl':
case 'sv':
case 'sw':
case 'ur':
case 'yi':
if (i === 1 && v === 0) return Plural.One;
return Plural.Other;
case 'be':
if (n % 10 === 1 && !(n % 100 === 11)) return Plural.One;
if (n % 10 === Math.floor(n % 10) && n % 10 >= 2 && n % 10 <= 4 &&
!(n % 100 >= 12 && n % 100 <= 14))
return Plural.Few;
if (n % 10 === 0 || n % 10 === Math.floor(n % 10) && n % 10 >= 5 && n % 10 <= 9 ||
n % 100 === Math.floor(n % 100) && n % 100 >= 11 && n % 100 <= 14)
return Plural.Many;
return Plural.Other;
case 'br':
if (n % 10 === 1 && !(n % 100 === 11 || n % 100 === 71 || n % 100 === 91)) return Plural.One;
if (n % 10 === 2 && !(n % 100 === 12 || n % 100 === 72 || n % 100 === 92)) return Plural.Two;
if (n % 10 === Math.floor(n % 10) && (n % 10 >= 3 && n % 10 <= 4 || n % 10 === 9) &&
!(n % 100 >= 10 && n % 100 <= 19 || n % 100 >= 70 && n % 100 <= 79 ||
n % 100 >= 90 && n % 100 <= 99))
return Plural.Few;
if (!(n === 0) && n % 1e6 === 0) return Plural.Many;
return Plural.Other;
case 'bs':
case 'hr':
case 'sr':
// https://github.com/papandreou/node-cldr/issues/31
if (v === 0 && i % 10 === 1 && (!(i % 100 === 11)) || f % 10 === 1 && !(f % 100 === 11))
return Plural.One;
if (v === 0 && i % 10 === Math.floor(i % 10) && i % 10 >= 2 && i % 10 <= 4 &&
(!(i % 100 >= 12 && i % 100 <= 14)) ||
f % 10 === Math.floor(f % 10) && f % 10 >= 2 && f % 10 <= 4 &&
!(f % 100 >= 12 && f % 100 <= 14))
return Plural.Few;
return Plural.Other;
case 'cs':
case 'sk':
if (i === 1 && v === 0) return Plural.One;
if (i === Math.floor(i) && i >= 2 && i <= 4 && v === 0) return Plural.Few;
if (!(v === 0)) return Plural.Many;
return Plural.Other;
case 'cy':
if (n === 0) return Plural.Zero;
if (n === 1) return Plural.One;
if (n === 2) return Plural.Two;
if (n === 3) return Plural.Few;
if (n === 6) return Plural.Many;
return Plural.Other;
case 'da':
if (n === 1 || !(t === 0) && (i === 0 || i === 1)) return Plural.One;
return Plural.Other;
case 'dsb':
case 'hsb':
if (v === 0 && (i % 100 === 1 || f % 100 === 1)) return Plural.One;
if (v === 0 && (i % 100 === 2 || f % 100 === 2)) return Plural.Two;
if (v === 0 && (i % 100 === Math.floor(i % 100) && i % 100 >= 3 && i % 100 <= 4 ||
f % 100 === Math.floor(f % 100) && f % 100 >= 3 && f % 100 <= 4))
return Plural.Few;
return Plural.Other;
case 'ff':
case 'fr':
case 'hy':
case 'kab':
if (i === 0 || i === 1) return Plural.One;
return Plural.Other;
case 'fil':
if (v === 0 && (i === 1 || i === 2 || i === 3 ||
v === 0 && (!(i % 10 === 4 || i % 10 === 6 || i % 10 === 9) ||
!(v === 0) && !(f % 10 === 4 || f % 10 === 6 || f % 10 === 9))))
return Plural.One;
return Plural.Other;
case 'ga':
if (n === 1) return Plural.One;
if (n === 2) return Plural.Two;
if (n === Math.floor(n) && n >= 3 && n <= 6) return Plural.Few;
if (n === Math.floor(n) && n >= 7 && n <= 10) return Plural.Many;
return Plural.Other;
case 'gd':
if (n === 1 || n === 11) return Plural.One;
if (n === 2 || n === 12) return Plural.Two;
if (n === Math.floor(n) && (n >= 3 && n <= 10 || n >= 13 && n <= 19)) return Plural.Few;
return Plural.Other;
case 'gv':
if (v === 0 && i % 10 === 1) return Plural.One;
if (v === 0 && i % 10 === 2) return Plural.Two;
if (v === 0 &&
(i % 100 === 0 || i % 100 === 20 || i % 100 === 40 || i % 100 === 60 || i % 100 === 80))
return Plural.Few;
if (!(v === 0)) return Plural.Many;
return Plural.Other;
case 'he':
if (i === 1 && v === 0) return Plural.One;
if (i === 2 && v === 0) return Plural.Two;
if (v === 0 && !(n >= 0 && n <= 10) && n % 10 === 0) return Plural.Many;
return Plural.Other;
case 'is':
if (t === 0 && i % 10 === 1 && (!(i % 100 === 11) || !(t === 0))) return Plural.One;
return Plural.Other;
case 'ksh':
if (n === 0) return Plural.Zero;
if (n === 1) return Plural.One;
return Plural.Other;
case 'kw':
case 'naq':
case 'se':
case 'smn':
if (n === 1) return Plural.One;
if (n === 2) return Plural.Two;
return Plural.Other;
case 'lag':
if (n === 0) return Plural.Zero;
if ((i === 0 || i === 1) && !(n === 0)) return Plural.One;
return Plural.Other;
case 'lt':
if (n % 10 === 1 && !(n % 100 >= 11 && n % 100 <= 19)) return Plural.One;
if (n % 10 === Math.floor(n % 10) && n % 10 >= 2 && n % 10 <= 9 &&
!(n % 100 >= 11 && n % 100 <= 19))
return Plural.Few;
if (!(f === 0)) return Plural.Many;
return Plural.Other;
case 'lv':
case 'prg':
if (n % 10 === 0 || n % 100 === Math.floor(n % 100) && n % 100 >= 11 && n % 100 <= 19 ||
v === 2 && f % 100 === Math.floor(f % 100) && f % 100 >= 11 && f % 100 <= 19)
return Plural.Zero;
if (n % 10 === 1 &&
(!(n % 100 === 11) ||
v === 2 && f % 10 === 1 && (!(f % 100 === 11) || !(v === 2) && f % 10 === 1)))
return Plural.One;
return Plural.Other;
case 'mk':
if (v === 0 && (i % 10 === 1 || f % 10 === 1)) return Plural.One;
return Plural.Other;
case 'mt':
if (n === 1) return Plural.One;
if (n === 0 || n % 100 === Math.floor(n % 100) && n % 100 >= 2 && n % 100 <= 10)
return Plural.Few;
if (n % 100 === Math.floor(n % 100) && n % 100 >= 11 && n % 100 <= 19) return Plural.Many;
return Plural.Other;
case 'pl':
if (i === 1 && v === 0) return Plural.One;
if (v === 0 && i % 10 === Math.floor(i % 10) && i % 10 >= 2 && i % 10 <= 4 &&
!(i % 100 >= 12 && i % 100 <= 14))
return Plural.Few;
if (v === 0 && !(i === 1) &&
(i % 10 === Math.floor(i % 10) && i % 10 >= 0 && i % 10 <= 1 ||
v === 0 &&
(i % 10 === Math.floor(i % 10) && i % 10 >= 5 && i % 10 <= 9 ||
v === 0 && i % 100 === Math.floor(i % 100) && i % 100 >= 12 && i % 100 <= 14)))
return Plural.Many;
return Plural.Other;
case 'pt':
if (n === Math.floor(n) && n >= 0 && n <= 2 && !(n === 2)) return Plural.One;
return Plural.Other;
case 'ro':
if (i === 1 && v === 0) return Plural.One;
if (!(v === 0) || n === 0 ||
!(n === 1) && n % 100 === Math.floor(n % 100) && n % 100 >= 1 && n % 100 <= 19)
return Plural.Few;
return Plural.Other;
case 'ru':
case 'uk':
if (v === 0 && i % 10 === 1 && !(i % 100 === 11)) return Plural.One;
if (v === 0 && i % 10 === Math.floor(i % 10) && i % 10 >= 2 && i % 10 <= 4 &&
!(i % 100 >= 12 && i % 100 <= 14))
return Plural.Few;
if (v === 0 && (i % 10 === 0 ||
v === 0 && (i % 10 === Math.floor(i % 10) && i % 10 >= 5 && i % 10 <= 9 ||
v === 0 && i % 100 === Math.floor(i % 100) && i % 100 >= 11 &&
i % 100 <= 14)))
return Plural.Many;
return Plural.Other;
case 'shi':
if (i === 0 || n === 1) return Plural.One;
if (n === Math.floor(n) && n >= 2 && n <= 10) return Plural.Few;
return Plural.Other;
case 'si':
if (n === 0 || n === 1 || i === 0 && f === 1) return Plural.One;
return Plural.Other;
case 'sl':
if (v === 0 && i % 100 === 1) return Plural.One;
if (v === 0 && i % 100 === 2) return Plural.Two;
if (v === 0 &&
(i % 100 === Math.floor(i % 100) && i % 100 >= 3 && i % 100 <= 4 || !(v === 0)))
return Plural.Few;
return Plural.Other;
case 'tzm':
if (n === Math.floor(n) && n >= 0 && n <= 1 || n === Math.floor(n) && n >= 11 && n <= 99)
return Plural.One;
return Plural.Other;
default:
return Plural.Other;
}
}

117
modules/@angular/common/test/localization_spec.ts Normal file
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@ -0,0 +1,117 @@
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {AsyncTestCompleter, afterEach, beforeEach, ddescribe, describe, iit, inject, it, xit} from '@angular/core/testing/testing_internal';
import {expect} from '@angular/platform-browser/testing/matchers';
import {NgLocaleLocalization, NgLocalization, getPluralCategory} from '../src/localization';
export function main() {
describe('localization', () => {
describe('NgLocaleLocalization', () => {
it('should return the correct values for the "en" locale', () => {
const localization = new NgLocaleLocalization('en_US');
expect(localization.getPluralCategory(0)).toEqual('other');
expect(localization.getPluralCategory(1)).toEqual('one');
expect(localization.getPluralCategory(2)).toEqual('other');
});
it('should return the correct values for the "ro" locale', () => {
const localization = new NgLocaleLocalization('ro');
expect(localization.getPluralCategory(0)).toEqual('few');
expect(localization.getPluralCategory(1)).toEqual('one');
expect(localization.getPluralCategory(2)).toEqual('few');
expect(localization.getPluralCategory(12)).toEqual('few');
expect(localization.getPluralCategory(23)).toEqual('other');
expect(localization.getPluralCategory(1212)).toEqual('few');
expect(localization.getPluralCategory(1223)).toEqual('other');
});
it('should return the correct values for the "sr" locale', () => {
const localization = new NgLocaleLocalization('sr');
expect(localization.getPluralCategory(1)).toEqual('one');
expect(localization.getPluralCategory(31)).toEqual('one');
expect(localization.getPluralCategory(0.1)).toEqual('one');
expect(localization.getPluralCategory(1.1)).toEqual('one');
expect(localization.getPluralCategory(2.1)).toEqual('one');
expect(localization.getPluralCategory(3)).toEqual('few');
expect(localization.getPluralCategory(33)).toEqual('few');
expect(localization.getPluralCategory(0.2)).toEqual('few');
expect(localization.getPluralCategory(0.3)).toEqual('few');
expect(localization.getPluralCategory(0.4)).toEqual('few');
expect(localization.getPluralCategory(2.2)).toEqual('few');
expect(localization.getPluralCategory(2.11)).toEqual('other');
expect(localization.getPluralCategory(2.12)).toEqual('other');
expect(localization.getPluralCategory(2.13)).toEqual('other');
expect(localization.getPluralCategory(2.14)).toEqual('other');
expect(localization.getPluralCategory(2.15)).toEqual('other');
expect(localization.getPluralCategory(0)).toEqual('other');
expect(localization.getPluralCategory(5)).toEqual('other');
expect(localization.getPluralCategory(10)).toEqual('other');
expect(localization.getPluralCategory(35)).toEqual('other');
expect(localization.getPluralCategory(37)).toEqual('other');
expect(localization.getPluralCategory(40)).toEqual('other');
expect(localization.getPluralCategory(0.0)).toEqual('other');
expect(localization.getPluralCategory(0.5)).toEqual('other');
expect(localization.getPluralCategory(0.6)).toEqual('other');
expect(localization.getPluralCategory(2)).toEqual('few');
expect(localization.getPluralCategory(2.1)).toEqual('one');
expect(localization.getPluralCategory(2.2)).toEqual('few');
expect(localization.getPluralCategory(2.3)).toEqual('few');
expect(localization.getPluralCategory(2.4)).toEqual('few');
expect(localization.getPluralCategory(2.5)).toEqual('other');
expect(localization.getPluralCategory(20)).toEqual('other');
expect(localization.getPluralCategory(21)).toEqual('one');
expect(localization.getPluralCategory(22)).toEqual('few');
expect(localization.getPluralCategory(23)).toEqual('few');
expect(localization.getPluralCategory(24)).toEqual('few');
expect(localization.getPluralCategory(25)).toEqual('other');
});
});
describe('getPluralCategory', () => {
it('should return plural category', () => {
const localization = new FrLocalization();
expect(getPluralCategory(0, ['one', 'other'], localization)).toEqual('one');
expect(getPluralCategory(1, ['one', 'other'], localization)).toEqual('one');
expect(getPluralCategory(5, ['one', 'other'], localization)).toEqual('other');
});
it('should return discrete cases', () => {
const localization = new FrLocalization();
expect(getPluralCategory(0, ['one', 'other', '=0'], localization)).toEqual('=0');
expect(getPluralCategory(1, ['one', 'other'], localization)).toEqual('one');
expect(getPluralCategory(5, ['one', 'other', '=5'], localization)).toEqual('=5');
expect(getPluralCategory(6, ['one', 'other', '=5'], localization)).toEqual('other');
});
});
});
}
class FrLocalization extends NgLocalization {
getPluralCategory(value: number): string {
switch (value) {
case 0:
case 1:
return 'one';
default:
return 'other';
}
}
}