remove docgen source and targets from build

pkg/docgen/lib/src/viewer.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Convenience methods wrapped up in a class to pull down the docgen viewer for
-/// a viewable website, and start up a server for viewing.
-library docgen.viewer;
-
-import 'dart:io';
-
-import 'package:path/path.dart' as path;
-
-import 'generator.dart' as gen;
-import 'package_helpers.dart' show rootDirectory;
-
-final String _dartdocViewerString =
-    path.join(Directory.current.path, 'dartdoc-viewer');
-
-final Directory _dartdocViewerDir = new Directory(_dartdocViewerString);
-
-Directory _topLevelTempDir;
-Directory _webDocsDir;
-bool _movedViewerCode = false;
-
-void createViewer(bool serve) {
-  _clone();
-  _compile();
-  if (serve) {
-    _runServer();
-  }
-}
-
-/*
- * dartdoc-viewer currently has the web app code under a 'client' directory
- *
- * This is confusing for folks that want to clone and modify the code.
- * It also includes a number of python files and other content related to
- * app engine hosting that are not needed.
- *
- * This logic exists to support the current model and a (future) updated
- * dartdoc-viewer repo where the 'client' content exists at the root of the
- * project and the other content is removed.
- */
-String get _viewerCodePath {
-  if (_viewerCodePathCache == null) {
-    var pubspecFileName = 'pubspec.yaml';
-
-    var thePath = _dartdocViewerDir.path;
-
-    if (!FileSystemEntity.isFileSync(path.join(thePath, pubspecFileName))) {
-      thePath = path.join(thePath, 'client');
-      if (!FileSystemEntity.isFileSync(path.join(thePath, pubspecFileName))) {
-        throw new StateError('Could not find a pubspec file');
-      }
-    }
-
-    _viewerCodePathCache = thePath;
-  }
-  return _viewerCodePathCache;
-}
-String _viewerCodePathCache;
-
-/// If our dartdoc-viewer code is already checked out, move it to a temporary
-/// directory outside of the package directory, so we don't try to process it
-/// for documentation.
-void ensureMovedViewerCode() {
-  // TODO(efortuna): This will need to be modified to run on anyone's package
-  // outside of the checkout!
-  if (_dartdocViewerDir.existsSync()) {
-    _topLevelTempDir = new Directory(rootDirectory).createTempSync();
-    _dartdocViewerDir.renameSync(_topLevelTempDir.path);
-  }
-}
-
-/// Move the dartdoc-viewer code back into place for "webpage deployment."
-void addBackViewerCode() {
-  if (_movedViewerCode) _dartdocViewerDir.renameSync(_dartdocViewerString);
-}
-
-/// Serve up our generated documentation for viewing in a browser.
-void _clone() {
-  // If the viewer code is already there, then don't clone again.
-  if (_dartdocViewerDir.existsSync()) {
-    _moveDirectoryAndServe();
-  } else {
-    var processResult = Process.runSync('git', ['clone', '-b', 'master',
-        'https://github.com/dart-lang/dartdoc-viewer.git'], runInShell: true);
-
-    if (processResult.exitCode == 0) {
-      /// Move the generated json/yaml docs directory to the dartdoc-viewer
-      /// directory, to run as a webpage.
-      var processResult = Process.runSync(gen.pubScript, ['get'],
-          runInShell: true, workingDirectory: _viewerCodePath);
-      print('process output: ${processResult.stdout}');
-      print('process stderr: ${processResult.stderr}');
-
-      var dir = new Directory(gen.outputDirectory == null ? 'docs' :
-          gen.outputDirectory);
-      _webDocsDir = new Directory(path.join(_viewerCodePath, 'web', 'docs'));
-      if (dir.existsSync()) {
-        // Move the docs folder to dartdoc-viewer/client/web/docs
-        dir.renameSync(_webDocsDir.path);
-      }
-    } else {
-      print('Error cloning git repository:');
-      print('process output: ${processResult.stdout}');
-      print('process stderr: ${processResult.stderr}');
-    }
-  }
-}
-
-/// Move the generated json/yaml docs directory to the dartdoc-viewer
-/// directory, to run as a webpage.
-void _moveDirectoryAndServe() {
-  var processResult = Process.runSync(gen.pubScript, ['upgrade'], runInShell:
-      true, workingDirectory: path.join(_dartdocViewerDir.path, 'client'));
-  print('process output: ${processResult.stdout}');
-  print('process stderr: ${processResult.stderr}');
-
-  var dir = new Directory(gen.outputDirectory == null ? 'docs' :
-      gen.outputDirectory);
-  var webDocsDir = new Directory(path.join(_dartdocViewerDir.path, 'client',
-      'web', 'docs'));
-  if (dir.existsSync()) {
-    // Move the docs folder to dartdoc-viewer/client/web/docs
-    dir.renameSync(webDocsDir.path);
-  }
-
-  if (webDocsDir.existsSync()) {
-    // Compile the code to JavaScript so we can run on any browser.
-    print('Compiling the app to JavaScript.');
-    var processResult = Process.runSync(gen.dartBinary, ['deploy.dart'],
-        workingDirectory: path.join(_dartdocViewerDir.path, 'client'),
-        runInShell: true);
-    print('process output: ${processResult.stdout}');
-    print('process stderr: ${processResult.stderr}');
-    _runServer();
-  }
-}
-
-void _compile() {
-  if (_webDocsDir.existsSync()) {
-    // Compile the code to JavaScript so we can run on any browser.
-    print('Compiling the app to JavaScript.');
-    var processResult = Process.runSync(gen.dartBinary, ['deploy.dart'],
-        workingDirectory: _viewerCodePath, runInShell: true);
-    print('process output: ${processResult.stdout}');
-    print('process stderr: ${processResult.stderr}');
-    var outputDir = path.join(_viewerCodePath, 'out', 'web');
-    print('Docs are available at $outputDir');
-  }
-}
-
-/// A simple HTTP server. Implemented here because this is part of the SDK,
-/// so it shouldn't have any external dependencies.
-void _runServer() {
-  // Launch a server to serve out of the directory dartdoc-viewer/client/web.
-  HttpServer.bind(InternetAddress.ANY_IP_V6, 8080).then((HttpServer httpServer)
-      {
-    print('Server launched. Navigate your browser to: '
-        'http://localhost:${httpServer.port}');
-    httpServer.listen((HttpRequest request) {
-      var response = request.response;
-      var basePath = path.join(_viewerCodePath, 'out', 'web');
-      var requestPath = path.join(basePath, request.uri.path.substring(1));
-      bool found = true;
-      var file = new File(requestPath);
-      if (file.existsSync()) {
-        // Set the correct header type.
-        if (requestPath.endsWith('.html')) {
-          response.headers.set('Content-Type', 'text/html');
-        } else if (requestPath.endsWith('.js')) {
-          response.headers.set('Content-Type', 'application/javascript');
-        } else if (requestPath.endsWith('.dart')) {
-          response.headers.set('Content-Type', 'application/dart');
-        } else if (requestPath.endsWith('.css')) {
-          response.headers.set('Content-Type', 'text/css');
-        }
-      } else {
-        if (requestPath == basePath) {
-          response.headers.set('Content-Type', 'text/html');
-          file = new File(path.join(basePath, 'index.html'));
-        } else {
-          print('Path not found: $requestPath');
-          found = false;
-          response.statusCode = HttpStatus.NOT_FOUND;
-          response.close();
-        }
-      }
-
-      if (found) {
-        // Serve up file contents.
-        file.openRead().pipe(response).catchError((e) {
-          print('HttpServer: error while closing the response stream $e');
-        });
-      }
-    }, onError: (e) {
-      print('HttpServer: an error occured $e');
-    });
-  });
-}