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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { Connection, Emitter, FileChangeType, TextDocuments } from 'vscode-languageserver';
import { TextDocument } from 'vscode-languageserver-textdocument';
import * as md from 'vscode-markdown-languageservice';
import { URI } from 'vscode-uri';
import * as protocol from './protocol';
import { coalesce } from './util/arrays';
import { isMarkdownDocument, looksLikeMarkdownPath } from './util/file';
import { Limiter } from './util/limiter';
import { ResourceMap } from './util/resourceMap';
declare const TextDecoder: any;
export class VsCodeClientWorkspace implements md.IWorkspace {
private readonly _onDidCreateMarkdownDocument = new Emitter<md.ITextDocument>();
public readonly onDidCreateMarkdownDocument = this._onDidCreateMarkdownDocument.event;
private readonly _onDidChangeMarkdownDocument = new Emitter<md.ITextDocument>();
public readonly onDidChangeMarkdownDocument = this._onDidChangeMarkdownDocument.event;
private readonly _onDidDeleteMarkdownDocument = new Emitter<URI>();
public readonly onDidDeleteMarkdownDocument = this._onDidDeleteMarkdownDocument.event;
private readonly _documentCache = new ResourceMap<md.ITextDocument>();
private readonly _utf8Decoder = new TextDecoder('utf-8');
constructor(
private readonly connection: Connection,
private readonly documents: TextDocuments<TextDocument>,
) {
documents.onDidOpen(e => {
this._documentCache.delete(URI.parse(e.document.uri));
if (this.isRelevantMarkdownDocument(e.document)) {
this._onDidCreateMarkdownDocument.fire(e.document);
}
});
documents.onDidChangeContent(e => {
if (this.isRelevantMarkdownDocument(e.document)) {
this._onDidChangeMarkdownDocument.fire(e.document);
}
});
documents.onDidClose(e => {
this._documentCache.delete(URI.parse(e.document.uri));
});
connection.onDidChangeWatchedFiles(async ({ changes }) => {
for (const change of changes) {
const resource = URI.parse(change.uri);
switch (change.type) {
case FileChangeType.Changed: {
this._documentCache.delete(resource);
const document = await this.getOrLoadMarkdownDocument(resource);
if (document) {
this._onDidChangeMarkdownDocument.fire(document);
}
break;
}
case FileChangeType.Created: {
const document = await this.getOrLoadMarkdownDocument(resource);
if (document) {
this._onDidCreateMarkdownDocument.fire(document);
}
break;
}
case FileChangeType.Deleted: {
this._documentCache.delete(resource);
this._onDidDeleteMarkdownDocument.fire(resource);
break;
}
}
}
});
}
async getAllMarkdownDocuments(): Promise<Iterable<md.ITextDocument>> {
const maxConcurrent = 20;
const foundFiles = new ResourceMap<void>();
const limiter = new Limiter<md.ITextDocument | undefined>(maxConcurrent);
// Add files on disk
const resources = await this.connection.sendRequest(protocol.findFilesRequestTypes, {});
const onDiskResults = await Promise.all(resources.map(strResource => {
return limiter.queue(async () => {
const resource = URI.parse(strResource);
const doc = await this.getOrLoadMarkdownDocument(resource);
if (doc) {
foundFiles.set(resource);
}
return doc;
});
}));
// Add opened files (such as untitled files)
const openTextDocumentResults = await Promise.all(this.documents.all()
.filter(doc => !foundFiles.has(URI.parse(doc.uri)) && this.isRelevantMarkdownDocument(doc)));
return coalesce([...onDiskResults, ...openTextDocumentResults]);
}
hasMarkdownDocument(resource: URI): boolean {
return !!this.documents.get(resource.toString());
}
async getOrLoadMarkdownDocument(resource: URI): Promise<md.ITextDocument | undefined> {
const existing = this._documentCache.get(resource);
if (existing) {
return existing;
}
const matchingDocument = this.documents.get(resource.toString());
if (matchingDocument) {
this._documentCache.set(resource, matchingDocument);
return matchingDocument;
}
if (!looksLikeMarkdownPath(resource)) {
return undefined;
}
try {
const response = await this.connection.sendRequest(protocol.readFileRequestType, { uri: resource.toString() });
// TODO: LSP doesn't seem to handle Array buffers well
const bytes = new Uint8Array(response);
// We assume that markdown is in UTF-8
const text = this._utf8Decoder.decode(bytes);
const doc = new md.InMemoryDocument(resource, text, 0);
this._documentCache.set(resource, doc);
return doc;
} catch (e) {
return undefined;
}
}
async pathExists(_resource: URI): Promise<boolean> {
return false;
}
async readDirectory(_resource: URI): Promise<[string, { isDir: boolean }][]> {
return [];
}
private isRelevantMarkdownDocument(doc: TextDocument) {
return isMarkdownDocument(doc) && URI.parse(doc.uri).scheme !== 'vscode-bulkeditpreview';
}
}
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