41 lines
1.5 KiB
TypeScript
41 lines
1.5 KiB
TypeScript
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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import { readFileSync } from 'fs';
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import path = require('path');
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const RE_VAR_PROP = /var\(\s*(--([\w\-\.]+))/g;
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let knownVariables: Set<string> | undefined;
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function getKnownVariableNames() {
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if (!knownVariables) {
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const knownVariablesFileContent = readFileSync(path.join(__dirname, './vscode-known-variables.json'), 'utf8').toString();
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const knownVariablesInfo = JSON.parse(knownVariablesFileContent);
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knownVariables = new Set([...knownVariablesInfo.colors, ...knownVariablesInfo.others] as string[]);
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}
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return knownVariables;
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}
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const iconVariable = /^--vscode-icon-.+-(content|font-family)$/;
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export interface IValidator {
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(value: string, report: (message: string) => void): void;
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}
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export function getVariableNameValidator(): IValidator {
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const allVariables = getKnownVariableNames();
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return (value: string, report: (unknwnVariable: string) => void) => {
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RE_VAR_PROP.lastIndex = 0; // reset lastIndex just to be sure
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let match;
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while (match = RE_VAR_PROP.exec(value)) {
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const variableName = match[1];
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if (variableName && !allVariables.has(variableName) && !iconVariable.test(variableName)) {
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report(variableName);
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}
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}
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};
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}
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