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Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'
This commit is contained in:
Joe Previte
242
lib/vscode/extensions/vscode-api-tests/src/memfs.ts
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242
lib/vscode/extensions/vscode-api-tests/src/memfs.ts
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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 * as path from 'path';
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import * as vscode from 'vscode';
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class File implements vscode.FileStat {
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type: vscode.FileType;
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ctime: number;
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mtime: number;
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size: number;
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name: string;
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data?: Uint8Array;
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constructor(name: string) {
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this.type = vscode.FileType.File;
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this.ctime = Date.now();
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this.mtime = Date.now();
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this.size = 0;
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this.name = name;
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}
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}
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class Directory implements vscode.FileStat {
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type: vscode.FileType;
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ctime: number;
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mtime: number;
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size: number;
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name: string;
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entries: Map<string, File | Directory>;
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constructor(name: string) {
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this.type = vscode.FileType.Directory;
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this.ctime = Date.now();
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this.mtime = Date.now();
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this.size = 0;
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this.name = name;
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this.entries = new Map();
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}
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}
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export type Entry = File | Directory;
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export class TestFS implements vscode.FileSystemProvider {
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constructor(
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readonly scheme: string,
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readonly isCaseSensitive: boolean
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) { }
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readonly root = new Directory('');
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// --- manage file metadata
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stat(uri: vscode.Uri): vscode.FileStat {
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return this._lookup(uri, false);
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}
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readDirectory(uri: vscode.Uri): [string, vscode.FileType][] {
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const entry = this._lookupAsDirectory(uri, false);
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let result: [string, vscode.FileType][] = [];
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for (const [name, child] of entry.entries) {
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result.push([name, child.type]);
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}
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return result;
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}
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// --- manage file contents
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readFile(uri: vscode.Uri): Uint8Array {
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const data = this._lookupAsFile(uri, false).data;
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if (data) {
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return data;
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}
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throw vscode.FileSystemError.FileNotFound();
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}
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writeFile(uri: vscode.Uri, content: Uint8Array, options: { create: boolean, overwrite: boolean }): void {
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let basename = path.posix.basename(uri.path);
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let parent = this._lookupParentDirectory(uri);
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let entry = parent.entries.get(basename);
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if (entry instanceof Directory) {
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throw vscode.FileSystemError.FileIsADirectory(uri);
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}
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if (!entry && !options.create) {
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throw vscode.FileSystemError.FileNotFound(uri);
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}
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if (entry && options.create && !options.overwrite) {
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throw vscode.FileSystemError.FileExists(uri);
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}
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if (!entry) {
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entry = new File(basename);
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parent.entries.set(basename, entry);
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this._fireSoon({ type: vscode.FileChangeType.Created, uri });
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}
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entry.mtime = Date.now();
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entry.size = content.byteLength;
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entry.data = content;
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this._fireSoon({ type: vscode.FileChangeType.Changed, uri });
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}
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// --- manage files/folders
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rename(oldUri: vscode.Uri, newUri: vscode.Uri, options: { overwrite: boolean }): void {
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if (!options.overwrite && this._lookup(newUri, true)) {
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throw vscode.FileSystemError.FileExists(newUri);
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}
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let entry = this._lookup(oldUri, false);
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let oldParent = this._lookupParentDirectory(oldUri);
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let newParent = this._lookupParentDirectory(newUri);
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let newName = path.posix.basename(newUri.path);
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oldParent.entries.delete(entry.name);
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entry.name = newName;
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newParent.entries.set(newName, entry);
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this._fireSoon(
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{ type: vscode.FileChangeType.Deleted, uri: oldUri },
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{ type: vscode.FileChangeType.Created, uri: newUri }
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);
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}
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delete(uri: vscode.Uri): void {
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let dirname = uri.with({ path: path.posix.dirname(uri.path) });
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let basename = path.posix.basename(uri.path);
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let parent = this._lookupAsDirectory(dirname, false);
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if (!parent.entries.has(basename)) {
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throw vscode.FileSystemError.FileNotFound(uri);
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}
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parent.entries.delete(basename);
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parent.mtime = Date.now();
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parent.size -= 1;
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this._fireSoon({ type: vscode.FileChangeType.Changed, uri: dirname }, { uri, type: vscode.FileChangeType.Deleted });
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}
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createDirectory(uri: vscode.Uri): void {
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let basename = path.posix.basename(uri.path);
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let dirname = uri.with({ path: path.posix.dirname(uri.path) });
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let parent = this._lookupAsDirectory(dirname, false);
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let entry = new Directory(basename);
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parent.entries.set(entry.name, entry);
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parent.mtime = Date.now();
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parent.size += 1;
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this._fireSoon({ type: vscode.FileChangeType.Changed, uri: dirname }, { type: vscode.FileChangeType.Created, uri });
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}
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// --- lookup
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private _lookup(uri: vscode.Uri, silent: false): Entry;
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private _lookup(uri: vscode.Uri, silent: boolean): Entry | undefined;
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private _lookup(uri: vscode.Uri, silent: boolean): Entry | undefined {
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let parts = uri.path.split('/');
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let entry: Entry = this.root;
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for (const part of parts) {
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const partLow = part.toLowerCase();
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if (!part) {
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continue;
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}
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let child: Entry | undefined;
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if (entry instanceof Directory) {
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if (this.isCaseSensitive) {
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child = entry.entries.get(part);
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} else {
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for (let [key, value] of entry.entries) {
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if (key.toLowerCase() === partLow) {
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child = value;
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break;
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}
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}
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}
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}
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if (!child) {
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if (!silent) {
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throw vscode.FileSystemError.FileNotFound(uri);
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} else {
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return undefined;
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}
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}
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entry = child;
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}
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return entry;
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}
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private _lookupAsDirectory(uri: vscode.Uri, silent: boolean): Directory {
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let entry = this._lookup(uri, silent);
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if (entry instanceof Directory) {
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return entry;
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}
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throw vscode.FileSystemError.FileNotADirectory(uri);
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}
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private _lookupAsFile(uri: vscode.Uri, silent: boolean): File {
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let entry = this._lookup(uri, silent);
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if (entry instanceof File) {
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return entry;
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}
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throw vscode.FileSystemError.FileIsADirectory(uri);
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}
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private _lookupParentDirectory(uri: vscode.Uri): Directory {
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const dirname = uri.with({ path: path.posix.dirname(uri.path) });
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return this._lookupAsDirectory(dirname, false);
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}
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// --- manage file events
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private _emitter = new vscode.EventEmitter<vscode.FileChangeEvent[]>();
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private _bufferedEvents: vscode.FileChangeEvent[] = [];
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private _fireSoonHandle?: NodeJS.Timer;
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readonly onDidChangeFile: vscode.Event<vscode.FileChangeEvent[]> = this._emitter.event;
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watch(_resource: vscode.Uri): vscode.Disposable {
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// ignore, fires for all changes...
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return new vscode.Disposable(() => { });
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}
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private _fireSoon(...events: vscode.FileChangeEvent[]): void {
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this._bufferedEvents.push(...events);
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if (this._fireSoonHandle) {
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clearTimeout(this._fireSoonHandle);
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}
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this._fireSoonHandle = setTimeout(() => {
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this._emitter.fire(this._bufferedEvents);
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this._bufferedEvents.length = 0;
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}, 5);
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}
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}
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