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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 { URI } from 'vs/base/common/uri';
import * as objects from 'vs/base/common/objects';
import { Emitter } from 'vs/base/common/event';
import { basename, dirname, extname, relativePath } from 'vs/base/common/resources';
import { RawContextKey, IContextKeyService, IContextKey } from 'vs/platform/contextkey/common/contextkey';
import { IModeService } from 'vs/editor/common/services/modeService';
import { IFileService } from 'vs/platform/files/common/files';
import { Disposable } from 'vs/base/common/lifecycle';
import { ParsedExpression, IExpression, parse } from 'vs/base/common/glob';
import { IWorkspaceContextService } from 'vs/platform/workspace/common/workspace';
import { IConfigurationService, IConfigurationChangeEvent } from 'vs/platform/configuration/common/configuration';
import { withNullAsUndefined } from 'vs/base/common/types';
export class ResourceContextKey extends Disposable implements IContextKey<URI> {
// NOTE: DO NOT CHANGE THE DEFAULT VALUE TO ANYTHING BUT
// UNDEFINED! IT IS IMPORTANT THAT DEFAULTS ARE INHERITED
// FROM THE PARENT CONTEXT AND ONLY UNDEFINED DOES THIS
static readonly Scheme = new RawContextKey<string>('resourceScheme', undefined);
static readonly Filename = new RawContextKey<string>('resourceFilename', undefined);
static readonly Dirname = new RawContextKey<string>('resourceDirname', undefined);
static readonly Path = new RawContextKey<string>('resourcePath', undefined);
static readonly LangId = new RawContextKey<string>('resourceLangId', undefined);
static readonly Resource = new RawContextKey<URI>('resource', undefined);
static readonly Extension = new RawContextKey<string>('resourceExtname', undefined);
static readonly HasResource = new RawContextKey<boolean>('resourceSet', undefined);
static readonly IsFileSystemResource = new RawContextKey<boolean>('isFileSystemResource', undefined);
private readonly _resourceKey: IContextKey<URI | null>;
private readonly _schemeKey: IContextKey<string | null>;
private readonly _filenameKey: IContextKey<string | null>;
private readonly _dirnameKey: IContextKey<string | null>;
private readonly _pathKey: IContextKey<string | null>;
private readonly _langIdKey: IContextKey<string | null>;
private readonly _extensionKey: IContextKey<string | null>;
private readonly _hasResource: IContextKey<boolean>;
private readonly _isFileSystemResource: IContextKey<boolean>;
constructor(
@IContextKeyService private readonly _contextKeyService: IContextKeyService,
@IFileService private readonly _fileService: IFileService,
@IModeService private readonly _modeService: IModeService
) {
super();
this._schemeKey = ResourceContextKey.Scheme.bindTo(this._contextKeyService);
this._filenameKey = ResourceContextKey.Filename.bindTo(this._contextKeyService);
this._dirnameKey = ResourceContextKey.Dirname.bindTo(this._contextKeyService);
this._pathKey = ResourceContextKey.Path.bindTo(this._contextKeyService);
this._langIdKey = ResourceContextKey.LangId.bindTo(this._contextKeyService);
this._resourceKey = ResourceContextKey.Resource.bindTo(this._contextKeyService);
this._extensionKey = ResourceContextKey.Extension.bindTo(this._contextKeyService);
this._hasResource = ResourceContextKey.HasResource.bindTo(this._contextKeyService);
this._isFileSystemResource = ResourceContextKey.IsFileSystemResource.bindTo(this._contextKeyService);
this._register(_fileService.onDidChangeFileSystemProviderRegistrations(() => {
const resource = this._resourceKey.get();
this._isFileSystemResource.set(Boolean(resource && _fileService.canHandleResource(resource)));
}));
this._register(_modeService.onDidCreateMode(() => {
const value = this._resourceKey.get();
this._langIdKey.set(value ? this._modeService.getModeIdByFilepathOrFirstLine(value) : null);
}));
}
set(value: URI | null) {
if (!ResourceContextKey._uriEquals(this._resourceKey.get(), value)) {
this._contextKeyService.bufferChangeEvents(() => {
this._resourceKey.set(value);
this._schemeKey.set(value ? value.scheme : null);
this._filenameKey.set(value ? basename(value) : null);
this._dirnameKey.set(value ? dirname(value).fsPath : null);
this._pathKey.set(value ? value.fsPath : null);
this._langIdKey.set(value ? this._modeService.getModeIdByFilepathOrFirstLine(value) : null);
this._extensionKey.set(value ? extname(value) : null);
this._hasResource.set(!!value);
this._isFileSystemResource.set(value ? this._fileService.canHandleResource(value) : false);
});
}
}
reset(): void {
this._contextKeyService.bufferChangeEvents(() => {
this._resourceKey.reset();
this._schemeKey.reset();
this._filenameKey.reset();
this._dirnameKey.reset();
this._pathKey.reset();
this._langIdKey.reset();
this._extensionKey.reset();
this._hasResource.reset();
this._isFileSystemResource.reset();
});
}
get(): URI | undefined {
return withNullAsUndefined(this._resourceKey.get());
}
private static _uriEquals(a: URI | undefined | null, b: URI | undefined | null): boolean {
if (a === b) {
return true;
}
if (!a || !b) {
return false;
}
return a.scheme === b.scheme // checks for not equals (fail fast)
&& a.authority === b.authority
&& a.path === b.path
&& a.query === b.query
&& a.fragment === b.fragment
&& a.toString() === b.toString(); // for equal we use the normalized toString-form
}
}
export class ResourceGlobMatcher extends Disposable {
private static readonly NO_ROOT: string | null = null;
private readonly _onExpressionChange = this._register(new Emitter<void>());
readonly onExpressionChange = this._onExpressionChange.event;
private readonly mapRootToParsedExpression = new Map<string | null, ParsedExpression>();
private readonly mapRootToExpressionConfig = new Map<string | null, IExpression>();
constructor(
private globFn: (root?: URI) => IExpression,
private shouldUpdate: (event: IConfigurationChangeEvent) => boolean,
@IWorkspaceContextService private readonly contextService: IWorkspaceContextService,
@IConfigurationService private readonly configurationService: IConfigurationService
) {
super();
this.updateExcludes(false);
this.registerListeners();
}
private registerListeners(): void {
this._register(this.configurationService.onDidChangeConfiguration(e => {
if (this.shouldUpdate(e)) {
this.updateExcludes(true);
}
}));
this._register(this.contextService.onDidChangeWorkspaceFolders(() => this.updateExcludes(true)));
}
private updateExcludes(fromEvent: boolean): void {
let changed = false;
// Add excludes per workspaces that got added
this.contextService.getWorkspace().folders.forEach(folder => {
const rootExcludes = this.globFn(folder.uri);
if (!this.mapRootToExpressionConfig.has(folder.uri.toString()) || !objects.equals(this.mapRootToExpressionConfig.get(folder.uri.toString()), rootExcludes)) {
changed = true;
this.mapRootToParsedExpression.set(folder.uri.toString(), parse(rootExcludes));
this.mapRootToExpressionConfig.set(folder.uri.toString(), objects.deepClone(rootExcludes));
}
});
// Remove excludes per workspace no longer present
this.mapRootToExpressionConfig.forEach((value, root) => {
if (root === ResourceGlobMatcher.NO_ROOT) {
return; // always keep this one
}
if (root && !this.contextService.getWorkspaceFolder(URI.parse(root))) {
this.mapRootToParsedExpression.delete(root);
this.mapRootToExpressionConfig.delete(root);
changed = true;
}
});
// Always set for resources outside root as well
const globalExcludes = this.globFn();
if (!this.mapRootToExpressionConfig.has(ResourceGlobMatcher.NO_ROOT) || !objects.equals(this.mapRootToExpressionConfig.get(ResourceGlobMatcher.NO_ROOT), globalExcludes)) {
changed = true;
this.mapRootToParsedExpression.set(ResourceGlobMatcher.NO_ROOT, parse(globalExcludes));
this.mapRootToExpressionConfig.set(ResourceGlobMatcher.NO_ROOT, objects.deepClone(globalExcludes));
}
if (fromEvent && changed) {
this._onExpressionChange.fire();
}
}
matches(resource: URI): boolean {
const folder = this.contextService.getWorkspaceFolder(resource);
let expressionForRoot: ParsedExpression | undefined;
if (folder && this.mapRootToParsedExpression.has(folder.uri.toString())) {
expressionForRoot = this.mapRootToParsedExpression.get(folder.uri.toString());
} else {
expressionForRoot = this.mapRootToParsedExpression.get(ResourceGlobMatcher.NO_ROOT);
}
// If the resource if from a workspace, convert its absolute path to a relative
// path so that glob patterns have a higher probability to match. For example
// a glob pattern of "src/**" will not match on an absolute path "/folder/src/file.txt"
// but can match on "src/file.txt"
let resourcePathToMatch: string | undefined;
if (folder) {
resourcePathToMatch = relativePath(folder.uri, resource); // always uses forward slashes
} else {
resourcePathToMatch = resource.fsPath; // TODO@isidor: support non-file URIs
}
return !!expressionForRoot && typeof resourcePathToMatch === 'string' && !!expressionForRoot(resourcePathToMatch);
}
}