feat(schematics): add initial schematics utils (angular#9451)

* feat(schematics): add initial schematics utils

* chore: nit

* chore: pr feedback

* chore: pr feedback

* chore: add code owner

.github/CODEOWNERS

@@ -172,6 +172,9 @@
 /src/e2e-app/slide-toggle/**                       @devversion
 /src/e2e-app/tabs/**                               @andrewseguin
 
+# Schematics
+/schematics/**                                     @amcdnl
+
 # Universal app
 /src/universal-app/**                              @jelbourn
 

.gitignore

@@ -38,3 +38,7 @@ npm-debug.log
 testem.log
 /.chrome
 /.git
+
+# schematics
+/schematics/**/*.js
+/schematics/**/*.map

schematics/collection.json

@@ -0,0 +1,5 @@
+// This is the root config file where the schematics are defined.
+{
+  "$schema": "./node_modules/@angular-devkit/schematics/collection-schema.json",
+  "schematics": {}
+}

schematics/package.json

@@ -0,0 +1,39 @@
+{
+  "name": "@angular/material-schematics",
+  "version": "1.0.23",
+  "description": "Material Schematics",
+  "scripts": {
+    "build": "tsc -p tsconfig.json",
+    "test": "npm run build && jasmine **/*_spec.js"
+  },
+  "keywords": [
+    "schematics",
+    "angular",
+    "material",
+    "angular-cli"
+  ],
+  "files": [
+    "**/*.json",
+    "**/*.d.ts",
+    "**/*.ts",
+    "**/*.__styleext__",
+    "**/*.js",
+    "**/*.html",
+    "**/*.map"
+  ],
+  "author": "",
+  "license": "MIT",
+  "schematics": "./collection.json",
+  "dependencies": {
+    "@angular-devkit/core": "^0.0.22",
+    "@angular-devkit/schematics": "^0.0.42",
+    "@schematics/angular": "^0.1.11",
+    "parse5": "^3.0.3",
+    "typescript": "^2.5.2"
+  },
+  "devDependencies": {
+    "@types/jasmine": "^2.6.0",
+    "@types/node": "^8.0.31",
+    "jasmine": "^2.8.0"
+  }
+}

schematics/tsconfig.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "baseUrl": "tsconfig",
+    "lib": [
+      "es2017",
+      "dom"
+    ],
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "noEmitOnError": false,
+    "rootDir": "src/",
+    "skipDefaultLibCheck": true,
+    "skipLibCheck": true,
+    "sourceMap": true,
+    "target": "es6",
+    "types": [
+      "jasmine",
+      "node"
+    ]
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "src/*/files/**/*"
+  ]
+}

schematics/utils/ast.ts

@@ -0,0 +1,62 @@
+import {SchematicsException} from '@angular-devkit/schematics';
+import {Tree} from '@angular-devkit/schematics';
+import * as ts from 'typescript';
+import {addImportToModule} from './devkit-utils/ast-utils';
+import {getAppModulePath} from './devkit-utils/ng-ast-utils';
+import {InsertChange} from './devkit-utils/change';
+import {getConfig, getAppFromConfig} from './devkit-utils/config';
+import {normalize} from '@angular-devkit/core';
+
+/**
+ * Reads file given path and returns TypeScript source file.
+ */
+export function getSourceFile(host: Tree, path: string): ts.SourceFile {
+  const buffer = host.read(path);
+  if (!buffer) {
+    throw new SchematicsException(`Could not find file for path: ${path}`);
+  }
+  const content = buffer.toString();
+  const source = ts.createSourceFile(path, content, ts.ScriptTarget.Latest, true);
+  return source;
+}
+
+/**
+ * Import and add module to root app module.
+ */
+export function addModuleImportToRootModule(host: Tree, moduleName: string, src: string) {
+  const config = getConfig(host);
+  const app = getAppFromConfig(config, '0');
+  const modulePath = getAppModulePath(host, app);
+  addModuleImportToModule(host, modulePath, moduleName, src);
+}
+
+/**
+ * Import and add module to specific module path.
+ * @param host the tree we are updating
+ * @param modulePath src location of the module to import
+ * @param moduleName name of module to import
+ * @param src src location to import
+ */
+export function addModuleImportToModule(
+    host: Tree, modulePath: string, moduleName: string, src: string) {
+  const moduleSource = getSourceFile(host, modulePath);
+  const changes = addImportToModule(moduleSource, modulePath, moduleName, src);
+  const recorder = host.beginUpdate(modulePath);
+
+  changes.forEach((change) => {
+    if (change instanceof InsertChange) {
+      recorder.insertLeft(change.pos, change.toAdd);
+    }
+  });
+
+  host.commitUpdate(recorder);
+}
+
+/**
+ * Gets the app index.html file
+ */
+export function getIndexHtmlPath(host: Tree) {
+  const config = getConfig(host);
+  const app = getAppFromConfig(config, '0');
+  return normalize(`/${app.root}/${app.index}`);
+}

schematics/utils/devkit-utils/README.md

@@ -0,0 +1,2 @@
+# NOTE
+This code is directly taken from [angular schematics package](https://github.com/angular/devkit/tree/master/packages/schematics/angular/utility).