SQL Operations Studio Public Preview 1 (0.23) release source code

extensions/markdown/src/documentLinkProvider.ts

@@ -0,0 +1,63 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as vscode from 'vscode';
+import * as path from 'path';
+
+export default class MarkdownDocumentLinkProvider implements vscode.DocumentLinkProvider {
+
+	private _linkPattern = /(\[[^\]]*\]\(\s*?)(((((?=.*\)\)+)|(?=.*\)\]+))[^\s\)]+?)|([^\s]+)))\)/g;
+
+	constructor() { }
+
+	public provideDocumentLinks(document: vscode.TextDocument, _token: vscode.CancellationToken): vscode.DocumentLink[] {
+		const results: vscode.DocumentLink[] = [];
+		const base = path.dirname(document.uri.fsPath);
+		const text = document.getText();
+
+		this._linkPattern.lastIndex = 0;
+		let match: RegExpMatchArray | null;
+		while ((match = this._linkPattern.exec(text))) {
+			const pre = match[1];
+			const link = match[2];
+			const offset = (match.index || 0) + pre.length;
+			const linkStart = document.positionAt(offset);
+			const linkEnd = document.positionAt(offset + link.length);
+			try {
+				results.push(new vscode.DocumentLink(
+					new vscode.Range(linkStart, linkEnd),
+					this.normalizeLink(document, link, base)));
+			} catch (e) {
+				// noop
+			}
+		}
+
+		return results;
+	}
+
+	private normalizeLink(document: vscode.TextDocument, link: string, base: string): vscode.Uri {
+		const uri = vscode.Uri.parse(link);
+		if (uri.scheme) {
+			return uri;
+		}
+
+		// assume it must be a file
+		let resourcePath = uri.path;
+		if (!uri.path) {
+			resourcePath = document.uri.path;
+		} else if (uri.path[0] === '/') {
+			const root = vscode.workspace.getWorkspaceFolder(document.uri);
+			if (root) {
+				resourcePath = path.join(root.uri.fsPath, uri.path);
+			}
+		} else {
+			resourcePath = path.join(base, uri.path);
+		}
+
+		return vscode.Uri.parse(`command:_markdown.openDocumentLink?${encodeURIComponent(JSON.stringify({ fragment: uri.fragment, path: resourcePath }))}`);
+	}
+}