Directory processing for the formatter main.

pkg/analyzer_experimental/bin/formatter.dart

Index: pkg/analyzer_experimental/bin/formatter.dart
===================================================================
--- pkg/analyzer_experimental/bin/formatter.dart	(revision 26800)
+++ pkg/analyzer_experimental/bin/formatter.dart	(working copy)
@@ -4,7 +4,6 @@
 // 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.
 
-import 'dart:convert';
 import 'dart:io';
 
 import 'package:args/args.dart';
@@ -13,6 +12,7 @@
 
 
 const BINARY_NAME = 'dartfmt';
+const DART_EXT = '.dart';
 final argParser = _initArgParser();
 
 void main() {
@@ -24,26 +24,51 @@
   if (options.rest.isEmpty) {
     _formatStdin(options);
   } else {
-    _formatFiles(options.rest);
+    _formatPaths(options.rest);
   }
 }
 
-_formatFiles(files) {
-  for (var file in files) {
-    _formatFile(file);
+_formatPaths(paths) {
+  paths.forEach((path) {
+    if (FileSystemEntity.isDirectorySync(path)) {
+      _formatDirectory(new Directory(path));
+    } else {
+      _formatFile(new File(path));
+    }
+  });
+}
+
+_formatResource(resource) {
+  if (resource is Directory) {
+    _formatDirectory(resource);
+  } else if (resource is File) {
+    _formatFile(resource);
   }
 }
 
-_formatFile(path) {
-  var buffer = new StringBuffer();
-  var file = new File(path);
-  file.openRead()
-      .transform(UTF8.decoder)
-      .listen((data) =>  buffer.write(data),
-        onError: (error) => print('Error, could not open "$path"'),
-        onDone: () => print(_formatCU(buffer.toString())));
+_formatDirectory(dir) => 
+    dir.listSync().forEach((resource) => _formatResource(resource));
+
+
+void _formatFile(file) {
+  Uri.parse(file).pathSegments.last;
+  print(file.path);
+  if (_isDartFile(file)) {
+    try {
+      var buffer = new StringBuffer();
+      var rawSource = file.readAsStringSync();
+      var formatted = _formatCU(rawSource);
+      print(formatted);
+      file.writeAsStringSync(formatted);
+    } catch (e) {
+      _log('Error formatting "${file.path}": $e');
+    }
+  }
 }
 
+//TODO(pquitslund): fix this using 'path'
+_isDartFile(file) => !file.path.startsWith('.') && file.path.endsWith(DART_EXT);
+
 _formatStdin(options) {
   _log('not supported yet!');
 //  stdin.transform(new StringDecoder())