Set up a basic command-line parser

pgonzal · pgonzal · commit 6c180b37e4f2 · 2018-04-12T16:09:37.000-07:00
diff --git a/stack/rush-stack/src/cli/CleanAction.ts b/stack/rush-stack/src/cli/CleanAction.ts
@@ -0,0 +1,30 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { CommandLineAction } from  '@microsoft/ts-command-line';
+import { RushStackCommandLine } from './RushStackCommandLine';
+import { BasicTasks } from '../logic/BasicTasks';
+import { BuildContext } from '../logic/BuildContext';
+
+export class CleanAction extends CommandLineAction {
+  constructor(parser: RushStackCommandLine) {
+    super({
+      actionVerb: 'clean',
+      summary: 'Delete all the intermediary files created during a build',
+      documentation: ''
+    });
+  }
+
+  protected onDefineParameters(): void { // override
+  }
+
+  protected onExecute(): Promise<void> { // override
+    console.log('Cleaning');
+
+    const buildContext: BuildContext = new BuildContext();
+
+    BasicTasks.doClean(buildContext);
+
+    return Promise.resolve();
+  }
+}
diff --git a/stack/rush-stack/src/cli/RushStackCommandLine.ts b/stack/rush-stack/src/cli/RushStackCommandLine.ts
@@ -0,0 +1,24 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { CommandLineParser } from '@microsoft/ts-command-line';
+
+import { CleanAction } from './CleanAction';
+
+export class RushStackCommandLine extends CommandLineParser {
+  constructor() {
+    super({
+      toolFilename: 'rush-stack',
+      toolDescription: 'The professional quality TypeScript build rig that\'s complete, integrated, and scalable'
+    });
+    this._populateActions();
+  }
+
+  protected onDefineParameters(): void { // override
+    // No parameters
+  }
+
+  private _populateActions(): void {
+    this.addAction(new CleanAction(this));
+  }
+}
diff --git a/stack/rush-stack/src/logic/BasicTasks.ts b/stack/rush-stack/src/logic/BasicTasks.ts
@@ -0,0 +1,10 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { BuildContext } from './BuildContext';
+
+export class BasicTasks {
+  public static doClean(buildContext: BuildContext): void {
+    console.log(`Project folder is: "${buildContext.projectFolder}"`);
+  }
+}
diff --git a/stack/rush-stack/src/logic/BuildContext.ts b/stack/rush-stack/src/logic/BuildContext.ts
@@ -0,0 +1,37 @@
+// Copyright (c) Microsoft Corporation. All rights reserved. Licensed under the MIT license.
+// See LICENSE in the project root for license information.
+
+import { PackageJsonLookup } from '@microsoft/node-core-library';
+
+export interface IBuildContextParameters {
+  /**
+   * If unspecified, then process.cwd() is used.
+   */
+  currentWorkingDirectory?: string;
+}
+
+export class BuildContext {
+  public readonly packageJsonLookup: PackageJsonLookup = new PackageJsonLookup();
+
+  /**
+   * The absolute path to the folder containing package.json for the project
+   * that we're building.
+   * Example: "C:\MyRepo\project-1"
+   */
+  public readonly projectFolder: string;
+
+  public constructor(parameters?: IBuildContextParameters) {
+    let currentWorkingDirectory: string = process.cwd();
+    if (parameters) {
+      if (parameters.currentWorkingDirectory) {
+        currentWorkingDirectory = parameters.currentWorkingDirectory;
+      }
+    }
+    const projectFolder: string | undefined = this.packageJsonLookup
+      .tryGetPackageFolderFor(currentWorkingDirectory);
+    if (!projectFolder) {
+      throw new Error('Unable to find a package.json for the current folder: ' + currentWorkingDirectory);
+    }
+    this.projectFolder = projectFolder;
+  }
+}
diff --git a/stack/rush-stack/src/start.ts b/stack/rush-stack/src/start.ts
@@ -5,10 +5,16 @@ import * as os from 'os';
 import * as colors from 'colors';
 import * as path from 'path';
 
+import { RushStackCommandLine } from './cli/RushStackCommandLine';
+
 const myPackageJsonFilename: string = path.resolve(path.join(
   __dirname, '..', 'package.json')
 );
 const myPackageJson: { version: string } = require(myPackageJsonFilename);
 
 console.log(os.EOL + colors.bold(`rush-stack ${myPackageJson.version} `
   + colors.cyan(' - http://rushstack.io') + os.EOL));
+
+const parser: RushStackCommandLine = new RushStackCommandLine();
+
+parser.execute();
