git: reorg

extensions/git/src/contentProvider.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.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { workspace, Uri, Disposable, Event, EventEmitter } from 'vscode';
+import * as path from 'path';
+import { Git } from './git';
+
+export class GitContentProvider {
+
+	private disposables: Disposable[] = [];
+
+	private onDidChangeEmitter = new EventEmitter<Uri>();
+	get onDidChange(): Event<Uri> { return this.onDidChangeEmitter.event; }
+
+	private uris = new Set<Uri>();
+
+	constructor(private git: Git, private rootPath: string, onGitChange: Event<Uri>) {
+		this.disposables.push(
+			onGitChange(this.fireChangeEvents, this),
+			workspace.registerTextDocumentContentProvider('git-index', this)
+		);
+	}
+
+	private fireChangeEvents(): void {
+		for (let uri of this.uris) {
+			this.onDidChangeEmitter.fire(uri);
+		}
+	}
+
+	async provideTextDocumentContent(uri: Uri): Promise<string> {
+		const relativePath = path.relative(this.rootPath, uri.fsPath).replace(/\\/g, '/');
+
+		try {
+			const result = await this.git.exec(this.rootPath, ['show', `HEAD:${relativePath}`]);
+
+			if (result.exitCode !== 0) {
+				this.uris.delete(uri);
+				return '';
+			}
+
+			this.uris.add(uri);
+			return result.stdout;
+		} catch (err) {
+			this.uris.delete(uri);
+			return '';
+		}
+	}
+
+	dispose(): void {
+		this.disposables.forEach(d => d.dispose());
+	}
+}