refactor: move all CLI-specific exceptions to different options

We made too many shortcuts for passing data in and custom schematics could not
work properly.

This is temporary as we will likely move some more logic into schematics tooling
to be able to pass only the raw args and the CLI config, but for now this is
enough to unblock AngularMix.

Author: hansl

packages/@angular/cli/commands/generate.ts

@@ -1,5 +1,4 @@
 import { cyan, yellow } from 'chalk';
-const stringUtils = require('ember-cli-string-utils');
 import { oneLine } from 'common-tags';
 import { CliConfig } from '../models/config';
 
@@ -11,14 +10,11 @@ import {
 } from '../utilities/schematics';
 import { DynamicPathOptions, dynamicPathParser } from '../utilities/dynamic-path-parser';
 import { getAppFromConfig } from '../utilities/app-utils';
-import * as path from 'path';
 import { SchematicAvailableOptions } from '../tasks/schematic-get-options';
 
 const Command = require('../ember-cli/lib/models/command');
 const SilentError = require('silent-error');
 
-const separatorRegEx = /[\/\\]/g;
-
 
 export default Command.extend({
   name: 'generate',
@@ -77,16 +73,15 @@ export default Command.extend({
 
   beforeRun: function(rawArgs: string[]) {
 
-    const isHelp = ['--help', '-h'].includes(rawArgs[0]);
+    const isHelp = ['--help', '-h'].indexOf(rawArgs[0]) != -1;
     if (isHelp) {
       return;
     }
 
     const schematicName = rawArgs[0];
     if (!schematicName) {
       return Promise.reject(new SilentError(oneLine`
-          The "ng generate" command requires a
-          schematic name to be specified.
+          The "ng generate" command requires a schematic name to be specified.
           For more details, use "ng help".
       `));
     }
@@ -127,7 +122,6 @@ export default Command.extend({
     }
 
     const entityName = rawArgs[1];
-    commandOptions.name = stringUtils.dasherize(entityName.split(separatorRegEx).pop());
 
     const appConfig = getAppFromConfig(commandOptions.app);
     const dynamicPathOptions: DynamicPathOptions = {
@@ -137,34 +131,16 @@ export default Command.extend({
       dryRun: commandOptions.dryRun
     };
     const parsedPath = dynamicPathParser(dynamicPathOptions);
-    commandOptions.sourceDir = appConfig.root;
-    const root = appConfig.root + path.sep;
-    commandOptions.appRoot = parsedPath.appRoot === appConfig.root ? '' :
-      parsedPath.appRoot.startsWith(root)
-        ? parsedPath.appRoot.substr(root.length)
-        : parsedPath.appRoot;
-
-    commandOptions.path = parsedPath.dir.replace(separatorRegEx, '/');
-    commandOptions.path = parsedPath.dir === appConfig.root ? '' :
-      parsedPath.dir.startsWith(root)
-        ? commandOptions.path.substr(root.length)
-        : commandOptions.path;
+
+    // Do not pass the schematics name itself, that's not useful.
+    commandOptions._ = rawArgs.slice(1);
+    commandOptions._angularCliConfig = (CliConfig.fromProject() || CliConfig.fromGlobal()).config;
+    commandOptions._angularCliAppConfig = appConfig;
+    commandOptions._angularCliParsedPath = parsedPath;
 
     const cwd = this.project.root;
     const schematicName = rawArgs[0];
 
-    if (['component', 'c', 'directive', 'd'].indexOf(schematicName) !== -1) {
-      if (commandOptions.prefix === undefined) {
-        commandOptions.prefix = appConfig.prefix;
-      }
-
-      if (schematicName === 'component' || schematicName === 'c') {
-        if (commandOptions.styleext === undefined) {
-          commandOptions.styleext = CliConfig.getValue('defaults.styleExt');
-        }
-      }
-    }
-
     const SchematicRunTask = require('../tasks/schematic-run').default;
     const schematicRunTask = new SchematicRunTask({
       ui: this.ui,
@@ -173,10 +149,6 @@ export default Command.extend({
     const collectionName = commandOptions.collection ||
       CliConfig.getValue('defaults.schematics.collection');
 
-    if (collectionName === '@schematics/angular' && schematicName === 'interface' && rawArgs[2]) {
-      commandOptions.type = rawArgs[2];
-    }
-
     return schematicRunTask.run({
         taskOptions: commandOptions,
         workingDir: cwd,