96 lines
No EOL
3.2 KiB
TypeScript
96 lines
No EOL
3.2 KiB
TypeScript
import {Translation} from "../UI/i18n/Translation";
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import UnitConfigJson from "./ThemeConfig/Json/UnitConfigJson";
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import Translations from "../UI/i18n/Translations";
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export class Denomination {
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public readonly canonical: string;
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readonly default: boolean;
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readonly prefix: boolean;
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private readonly _human: Translation;
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public readonly alternativeDenominations: string [];
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constructor(json: UnitConfigJson, context: string) {
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context = `${context}.unit(${json.canonicalDenomination})`
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this.canonical = json.canonicalDenomination.trim()
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if (this.canonical === undefined) {
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throw `${context}: this unit has no decent canonical value defined`
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}
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json.alternativeDenomination.forEach((v, i) => {
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if (((v?.trim() ?? "") === "")) {
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throw `${context}.alternativeDenomination.${i}: invalid alternative denomination: undefined, null or only whitespace`
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}
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})
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this.alternativeDenominations = json.alternativeDenomination?.map(v => v.trim()) ?? []
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this.default = json.default ?? false;
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this._human = Translations.T(json.human, context + "human")
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this.prefix = json.prefix ?? false;
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}
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get human(): Translation {
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return this._human.Clone()
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}
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public canonicalValue(value: string, actAsDefault?: boolean) {
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if (value === undefined) {
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return undefined;
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}
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const stripped = this.StrippedValue(value, actAsDefault)
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if (stripped === null) {
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return null;
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}
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return (stripped + " " + this.canonical.trim()).trim();
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}
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/**
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* Returns the core value (without unit) if:
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* - the value ends with the canonical or an alternative value (or begins with if prefix is set)
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* - the value is a Number (without unit) and default is set
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*
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* Returns null if it doesn't match this unit
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*/
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public StrippedValue(value: string, actAsDefault?: boolean): string {
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if (value === undefined) {
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return undefined;
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}
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value = value.toLowerCase()
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if (this.prefix) {
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if (value.startsWith(this.canonical) && this.canonical !== "") {
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return value.substring(this.canonical.length).trim();
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}
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for (const alternativeValue of this.alternativeDenominations) {
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if (value.startsWith(alternativeValue)) {
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return value.substring(alternativeValue.length).trim();
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}
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}
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} else {
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if (value.endsWith(this.canonical.toLowerCase()) && this.canonical !== "") {
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return value.substring(0, value.length - this.canonical.length).trim();
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}
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for (const alternativeValue of this.alternativeDenominations) {
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if (value.endsWith(alternativeValue.toLowerCase())) {
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return value.substring(0, value.length - alternativeValue.length).trim();
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}
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}
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}
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if (this.default || actAsDefault) {
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const parsed = Number(value.trim())
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if (!isNaN(parsed)) {
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return value.trim();
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}
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}
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return null;
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}
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} |