@angular/common
Version:
Angular - commonly needed directives and services
68 lines • 6.15 kB
JavaScript
/**
* @license
* Copyright Google LLC 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 { Inject, Injectable, LOCALE_ID } from '@angular/core';
import { getLocalePluralCase, Plural } from './locale_data_api';
/**
* @publicApi
*/
export class NgLocalization {
}
/**
* Returns the plural category for a given value.
* - "=value" when the case exists,
* - the plural category otherwise
*/
export function getPluralCategory(value, cases, ngLocalization, locale) {
let key = `=${value}`;
if (cases.indexOf(key) > -1) {
return key;
}
key = ngLocalization.getPluralCategory(value, locale);
if (cases.indexOf(key) > -1) {
return key;
}
if (cases.indexOf('other') > -1) {
return 'other';
}
throw new Error(`No plural message found for value "${value}"`);
}
/**
* Returns the plural case based on the locale
*
* @publicApi
*/
export class NgLocaleLocalization extends NgLocalization {
constructor(locale) {
super();
this.locale = locale;
}
getPluralCategory(value, locale) {
const plural = getLocalePluralCase(locale || 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';
}
}
}
NgLocaleLocalization.decorators = [
{ type: Injectable }
];
NgLocaleLocalization.ctorParameters = () => [
{ type: String, decorators: [{ type: Inject, args: [LOCALE_ID,] }] }
];
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