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Diffstat (limited to 'packages/demobank-ui/src/i18n/index.tsx')
-rw-r--r-- | packages/demobank-ui/src/i18n/index.tsx | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/packages/demobank-ui/src/i18n/index.tsx b/packages/demobank-ui/src/i18n/index.tsx deleted file mode 100644 index 2489184b2..000000000 --- a/packages/demobank-ui/src/i18n/index.tsx +++ /dev/null @@ -1,201 +0,0 @@ -/* - This file is part of GNU Taler - (C) 2021 Taler Systems S.A. - - GNU Taler is free software; you can redistribute it and/or modify it under the - terms of the GNU General Public License as published by the Free Software - Foundation; either version 3, or (at your option) any later version. - - GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - A PARTICULAR PURPOSE. See the GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along with - GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> - */ - -/** - * Translation helpers for React components and template literals. - */ - -/** - * Imports - */ -import { ComponentChild, ComponentChildren, h, Fragment, VNode } from "preact"; - -import { useTranslationContext } from "../context/translation"; - -export function useTranslator() { - const ctx = useTranslationContext(); - const jed = ctx.handler; - return function str( - stringSeq: TemplateStringsArray, - ...values: any[] - ): string { - const s = toI18nString(stringSeq); - if (!s) return s; - const tr = jed - .translate(s) - .ifPlural(1, s) - .fetch(...values); - return tr; - }; -} - -/** - * Convert template strings to a msgid - */ -function toI18nString(stringSeq: ReadonlyArray<string>): string { - let s = ""; - for (let i = 0; i < stringSeq.length; i++) { - s += stringSeq[i]; - if (i < stringSeq.length - 1) s += `%${i + 1}$s`; - } - return s; -} - -interface TranslateSwitchProps { - target: number; - children: ComponentChildren; -} - -function stringifyChildren(children: ComponentChildren): string { - let n = 1; - const ss = (children instanceof Array ? children : [children]).map((c) => { - if (typeof c === "string") return c; - - return `%${n++}$s`; - }); - const s = ss.join("").replace(/ +/g, " ").trim(); - return s; -} - -interface TranslateProps { - children: ComponentChildren; - /** - * Component that the translated element should be wrapped in. - * Defaults to "div". - */ - wrap?: any; - - /** - * Props to give to the wrapped component. - */ - wrapProps?: any; -} - -function getTranslatedChildren( - translation: string, - children: ComponentChildren, -): ComponentChild[] { - const tr = translation.split(/%(\d+)\$s/); - const childArray = children instanceof Array ? children : [children]; - // Merge consecutive string children. - const placeholderChildren = Array<ComponentChild>(); - for (let i = 0; i < childArray.length; i++) { - const x = childArray[i]; - if (x === undefined) continue; - else if (typeof x === "string") continue; - else placeholderChildren.push(x); - } - const result = Array<ComponentChild>(); - for (let i = 0; i < tr.length; i++) - if (i % 2 == 0) - // Text - result.push(tr[i]); - else { - const childIdx = Number.parseInt(tr[i], 10) - 1; - result.push(placeholderChildren[childIdx]); - } - - return result; -} - -/** - * Translate text node children of this component. - * If a child component might produce a text node, it must be wrapped - * in a another non-text element. - * - * Example: - * ``` - * <Translate> - * Hello. Your score is <span><PlayerScore player={player} /></span> - * </Translate> - * ``` - */ -export function Translate({ children }: TranslateProps): VNode { - const s = stringifyChildren(children); - const ctx = useTranslationContext(); - const translation: string = ctx.handler.ngettext(s, s, 1); - const result = getTranslatedChildren(translation, children); - return <Fragment>{result}</Fragment>; -} - -/** - * Switch translation based on singular or plural based on the target prop. - * Should only contain TranslateSingular and TransplatePlural as children. - * - * Example: - * ``` - * <TranslateSwitch target={n}> - * <TranslateSingular>I have {n} apple.</TranslateSingular> - * <TranslatePlural>I have {n} apples.</TranslatePlural> - * </TranslateSwitch> - * ``` - */ -export function TranslateSwitch({ children, target }: TranslateSwitchProps) { - let singular: VNode<TranslationPluralProps> | undefined; - let plural: VNode<TranslationPluralProps> | undefined; - // const children = this.props.children; - if (children) - (children instanceof Array ? children : [children]).forEach( - (child: any) => { - if (child.type === TranslatePlural) plural = child; - - if (child.type === TranslateSingular) singular = child; - }, - ); - - if (!singular || !plural) { - console.error("translation not found"); - return h("span", {}, ["translation not found"]); - } - singular.props.target = target; - plural.props.target = target; - // We're looking up the translation based on the - // singular, even if we must use the plural form. - return singular; -} - -interface TranslationPluralProps { - children: ComponentChildren; - target: number; -} - -/** - * See [[TranslateSwitch]]. - */ -export function TranslatePlural({ - children, - target, -}: TranslationPluralProps): VNode { - const s = stringifyChildren(children); - const ctx = useTranslationContext(); - const translation = ctx.handler.ngettext(s, s, 1); - const result = getTranslatedChildren(translation, children); - return <Fragment>{result}</Fragment>; -} - -/** - * See [[TranslateSwitch]]. - */ -export function TranslateSingular({ - children, - target, -}: TranslationPluralProps): VNode { - const s = stringifyChildren(children); - const ctx = useTranslationContext(); - const translation = ctx.handler.ngettext(s, s, target); - const result = getTranslatedChildren(translation, children); - return <Fragment>{result}</Fragment>; -} |