Handle workspace folder reading

extensions/html-language-features/client/src/customData.ts

@@ -0,0 +1,56 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import { workspace, WorkspaceFolder } from 'vscode';
+
+interface ExperimentalConfig {
+	experimental?: {
+		custom?: {
+			tags?: string[];
+			attributes?: string[];
+		}
+	};
+}
+
+export function getCustomDataPathsInAllWorkspaces(workspaceFolders: WorkspaceFolder[] | undefined) {
+	const tagPaths: string[] = [];
+	const attributePaths: string[] = [];
+
+	if (!workspaceFolders) {
+		return {
+			tagPaths,
+			attributePaths
+		};
+	}
+
+	workspaceFolders.forEach(wf => {
+		const allHtmlConfig = workspace.getConfiguration(undefined, wf.uri);
+		const wfHtmlConfig = allHtmlConfig.inspect<ExperimentalConfig>('html');
+
+		if (
+			wfHtmlConfig &&
+			wfHtmlConfig.workspaceFolderValue &&
+			wfHtmlConfig.workspaceFolderValue.experimental &&
+			wfHtmlConfig.workspaceFolderValue.experimental.custom
+		) {
+			if (wfHtmlConfig.workspaceFolderValue.experimental.custom.tags) {
+				wfHtmlConfig.workspaceFolderValue.experimental.custom.tags.forEach(t => {
+					tagPaths.push(path.resolve(wf.uri.fsPath, t));
+				});
+			}
+			if (wfHtmlConfig.workspaceFolderValue.experimental.custom.attributes) {
+				wfHtmlConfig.workspaceFolderValue.experimental.custom.attributes.forEach(a => {
+					attributePaths.push(path.resolve(wf.uri.fsPath, a));
+				});
+			}
+		}
+	});
+
+	return {
+		tagPaths,
+		attributePaths
+	};
+}