tweaks to the ios code

packages/flutter_tools/lib/src/commands/ios.dart

@@ -8,6 +8,8 @@ import "dart:io";
 import "package:path/path.dart" as path;
 
 import "../artifacts.dart";
+import "../base/logging.dart";
+import "../base/process.dart";
 import "../runner/flutter_command.dart";
 import "../runner/flutter_command_runner.dart";
 
@@ -23,7 +25,6 @@ class IOSCommand extends FlutterCommand {
 
   static Uri _xcodeProjectUri(String revision) {
     String uriString = "https://storage.googleapis.com/flutter_infra/flutter/$revision/ios/FlutterXcode.zip";
-    print("Downloading $uriString ...");
     return Uri.parse(uriString);
   }
 
@@ -32,7 +33,9 @@ class IOSCommand extends FlutterCommand {
 
     HttpClient client = new HttpClient();
 
-    HttpClientRequest request = await client.getUrl(_xcodeProjectUri(ArtifactStore.engineRevision));
+    Uri xcodeProjectUri = _xcodeProjectUri(ArtifactStore.engineRevision);
+    logging.info("Downloading $xcodeProjectUri...");
+    HttpClientRequest request = await client.getUrl(xcodeProjectUri);
     HttpClientResponse response = await request.close();
 
     if (response.statusCode != 200)
@@ -48,27 +51,23 @@ class IOSCommand extends FlutterCommand {
   Future<bool> _inflateXcodeArchive(String directory, List<int> archiveBytes) async {
     print("Unzipping Xcode project to local directory...");
 
-    if (archiveBytes.isEmpty)
-      return false;
-
-    // We cannot use ArchiveFile because this archive contains file that are exectuable
+    // We cannot use ArchiveFile because this archive contains files that are exectuable
     // and there is currently no provision to modify file permissions during
-    // or after creation. See https://github.com/dart-lang/sdk/issues/15078
+    // or after creation. See https://github.com/dart-lang/sdk/issues/15078.
     // So we depend on the platform to unzip the archive for us.
 
     Directory tempDir = await Directory.systemTemp.create();
-    File tempFile = await new File(path.join(tempDir.path, "FlutterXcode.zip")).create();
-    IOSink writeSink = tempFile.openWrite();
-    writeSink.add(archiveBytes);
-    await writeSink.close();
+    File tempFile = new File(path.join(tempDir.path, "FlutterXcode.zip"))..createSync();
+    tempFile.writeAsBytesSync(archiveBytes);
 
-    ProcessResult result = await Process.run('/usr/bin/unzip', [tempFile.path, '-d', directory]);
+    try {
+      runCheckedSync(['/usr/bin/unzip', tempFile.path, '-d', directory]);
+    } catch (error) {
+      return false;
+    }
 
     // Cleanup the temp directory after unzipping
-    await Process.run('/bin/rm', ['rf', tempDir.path]);
-
-    if (result.exitCode != 0)
-      return false;
+    runSync(['/bin/rm', '-rf', tempDir.path]);
 
     Directory flutterDir = new Directory(path.join(directory, 'Flutter'));
     bool flutterDirExists = await flutterDir.exists();
@@ -78,24 +77,24 @@ class IOSCommand extends FlutterCommand {
     // Move contents of the Flutter directory one level up
     // There is no dart:io API to do this. See https://github.com/dart-lang/sdk/issues/8148
 
-    bool moveFailed = false;
     for (FileSystemEntity file in flutterDir.listSync()) {
-      ProcessResult result = await Process.run('/bin/mv', [file.path, directory]);
-      moveFailed = result.exitCode != 0;
-      if (moveFailed)
-        break;
+      try {
+        runCheckedSync(['/bin/mv', file.path, directory]);
+      } catch (error) {
+        return false;
+      }
     }
 
-    ProcessResult rmResult = await Process.run('/bin/rm', ["-rf", flutterDir.path]);
+    runSync(['/bin/rm', '-rf', flutterDir.path]);
 
-    return !moveFailed && rmResult.exitCode == 0;
+    return true;
   }
 
-  Future<bool> _setupXcodeProjXcconfig(String filePath) async {
+  void _setupXcodeProjXcconfig(String filePath) {
     StringBuffer localsBuffer = new StringBuffer();
 
-    localsBuffer.writeln("// Generated. Do not edit or check into version control!!");
-    localsBuffer.writeln("// Recreate using `flutter ios`");
+    localsBuffer.writeln("// Generated. Do not edit or check into version control!");
+    localsBuffer.writeln("// Recreate using `flutter ios`.");
 
     String flutterRoot = path.normalize(Platform.environment[kFlutterRootEnvironmentVariableName]);
     localsBuffer.writeln("FLUTTER_ROOT=$flutterRoot");
@@ -108,10 +107,8 @@ class IOSCommand extends FlutterCommand {
     localsBuffer.writeln("DART_SDK_PATH=$dartSDKPath");
 
     File localsFile = new File(filePath);
-    await localsFile.create(recursive: true);
-    await localsFile.writeAsString(localsBuffer.toString());
-
-    return true;
+    localsFile.createSync(recursive: true);
+    localsFile.writeAsStringSync(localsBuffer.toString());
   }
 
   Future<int> _runInitCommand() async {
@@ -119,23 +116,24 @@ class IOSCommand extends FlutterCommand {
     String xcodeprojPath = path.join(Directory.current.path, "ios");
     List<int> archiveBytes = await _fetchXcodeArchive();
 
+    if (archiveBytes.isEmpty) {
+      print("Error: No archive bytes received.");
+      return 1;
+    }
+
     // Step 2: Inflate the archive into the user project directory
     bool result = await _inflateXcodeArchive(xcodeprojPath, archiveBytes);
     if (!result) {
       print("Error: Could not init the Xcode project: the 'ios' directory already exists.");
       print("To proceed, remove the 'ios' directory and try again.");
       print("Warning: You may have made manual changes to files in the 'ios' directory.");
-      return -1;
+      return 1;
     }
 
     // Step 3: Populate the Local.xcconfig with project specific paths
-    result = await _setupXcodeProjXcconfig(path.join(xcodeprojPath, "Local.xcconfig"));
-    if (!result) {
-      print("Could not setup local properties file");
-      return -1;
-    }
+    _setupXcodeProjXcconfig(path.join(xcodeprojPath, "Local.xcconfig"));
 
-    // Step 4: Launch Xcode and let the user edit plist, resources, provisioning, etc.
+    // Step 4: Tell the user the location of the generated project.
     print("An Xcode project has been placed in 'ios/'.");
     print("You may edit it to modify iOS specific configuration.");
     return 0;
@@ -145,13 +143,13 @@ class IOSCommand extends FlutterCommand {
   Future<int> runInProject() async {
     if (!Platform.isMacOS) {
       print("iOS specific commands may only be run on a Mac.");
-      return -1;
+      return 1;
     }
 
     if (argResults['init'])
       return await _runInitCommand();
 
-    print("No flags specified...");
-    return -1;
+    print("No flags specified.");
+    return 1;
   }
 }

packages/flutter_tools/lib/src/ios/device_ios.dart

@@ -200,7 +200,7 @@ class IOSDevice extends Device {
     // Step 2: Check that the application exists at the specified path
     Directory bundle = new Directory(path.join(app.localPath, 'build', 'Release-iphoneos', 'Runner.app'));
 
-    bool bundleExists = await bundle.exists();
+    bool bundleExists = bundle.existsSync();
     if (!bundleExists) {
       logging.severe('Could not find the built application bundle at ${bundle.path}');
       return false;
@@ -572,7 +572,7 @@ Future<bool> _buildIOSXcodeProject(ApplicationPackage app, bool isDevice) async
     command.addAll(['-sdk', 'iphonesimulator']);
   }
 
-  ProcessResult result = await Process.runSync('/usr/bin/env', command,
+  ProcessResult result = Process.runSync('/usr/bin/env', command,
       workingDirectory: app.localPath);
   return result.exitCode == 0;
 }