Add "text search" example

text-search-sample/.vscode/launch.json

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+// A launch configuration that compiles the extension and then opens it inside a new window
+{
+    "version": "0.1.0",
+    "configurations": [{
+        "name": "Launch Extension",
+        "type": "extensionHost",
+        "request": "launch",
+        "runtimeExecutable": "${execPath}",
+        "args": [
+            "--extensionDevelopmentPath=${workspaceRoot}"
+        ],
+        "stopOnEntry": false,
+        "sourceMaps": true,
+        "outFiles": [
+            "${workspaceRoot}/out/src/**/*.js"
+        ],
+        "preLaunchTask": "npm:watch"
+    }]
+}

text-search-sample/.vscode/tasks.json

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+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [{
+        "identifier": "npm:watch",
+        "type": "npm",
+        "script": "watch",
+        "problemMatcher": [
+            "$tsc-watch"
+        ],
+        "isBackground": true
+    }]
+}

text-search-sample/README.md

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+# Text Search API Sample

text-search-sample/package.json

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+{
+	"name": "text-search-sample",
+	"displayName": "Text Search API Sample",
+	"version": "0.0.1",
+	"publisher": "roblourens",
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/Microsoft/vscode-extension-samples"
+	},
+	"bugs": {
+		"url": "https://github.com/Microsoft/vscode-extension-samples/issues"
+	},
+	"engines": {
+		"vscode": "^1.25.0"
+	},
+	"categories": [
+		"Other"
+	],
+	"activationEvents": [
+		"onCommand:textsearch.doSearch"
+	],
+	"contributes": {
+		"commands": [
+			{
+				"command": "textsearch.doSearch",
+				"title": "Text Search"
+			}
+		]
+	},
+	"main": "./out/extension",
+	"scripts": {
+		"vscode:prepublish": "tsc -p ./",
+		"watch": "tsc -watch -p ./",
+		"postinstall": "node ./node_modules/vscode/bin/install",
+		"tslint": "tslint -c tslint.json src/extension.ts"
+	},
+	"devDependencies": {
+		"typescript": "^2.1.4",
+		"vscode": "^1.1.17",
+		"@types/node": "^6.0.40"
+	}
+}

text-search-sample/src/extension.ts

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+/*---------------------------------------------------------
+ * Copyright (C) Microsoft Corporation. All rights reserved.
+ *--------------------------------------------------------*/
+
+'use strict';
+
+import * as vscode from 'vscode';
+
+export function activate(context: vscode.ExtensionContext) {
+	const outputChannel = vscode.window.createOutputChannel('Text Search');
+
+	context.subscriptions.push(vscode.commands.registerCommand('textsearch.doSearch', async () => {
+		const result = await vscode.window.showInputBox();
+		if (result) {
+			await vscode.workspace.findTextInFiles({ pattern: result }, { }, result => {
+				outputChannel.appendLine(`${result.uri.fsPath}(${result.range.start.line}, ${result.range.start.character}): ${result.preview.text}`);
+			});
+
+			outputChannel.appendLine('\n');
+		}
+
+	}));
+}

text-search-sample/tsconfig.json

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+{
+	"compilerOptions": {
+		"module": "commonjs",
+		"target": "es5",
+		"outDir": "out",
+		"lib": [
+			"es6"
+		],
+		"sourceMap": true,
+		"rootDir": "src"
+	},
+	"exclude": [
+		"node_modules"
+	]
+}