Stop running pub get at gclient sync time and fix build bugs

mojo/public/dart/third_party/update_packages.py

Index: mojo/public/dart/third_party/update_packages.py
diff --git a/mojo/public/dart/third_party/update_packages.py b/mojo/public/dart/third_party/update_packages.py
new file mode 100755
index 0000000000000000000000000000000000000000..160d2a1fc95d62f8dfc704d399ffdbf340c01057
--- /dev/null
+++ b/mojo/public/dart/third_party/update_packages.py
@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+#
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Utility for updating third_party packages used in the Mojo Dart SDK"""
+
+import argparse
+import errno
+import json
+import os
+import shutil
+import subprocess
+import sys
+
+SCRIPT_DIR = os.path.dirname(sys.argv[0])
+
+def check_for_pubspec_yaml():
+  return os.path.exists(os.path.join(SCRIPT_DIR, 'pubspec.yaml'))
+
+def change_directory(directory):
+  return os.chdir(directory)
+
+def remove_existing_packages(base_path):
+  print('Removing all package directories under %s' % base_path)
+  for child in os.listdir(base_path):
+    path = os.path.join(base_path, child)
+    if os.path.isdir(path):
+      print('Removing %s ' % path)
+      shutil.rmtree(path)
+
+def pub_get(pub_exe):
+  return subprocess.check_output([pub_exe, 'get'])
+
+def copy_packages(base_path):
+  packages_path = os.path.join(base_path, 'packages')
+  for package in os.listdir(packages_path):
+    lib_path = os.path.realpath(os.path.join(packages_path, package))
+    package_path = os.path.normpath(os.path.join(lib_path, '..'))
+    destinaton_path = os.path.join(base_path, package)
+    print('Copying %s to %s' % (package_path, destinaton_path))
+    shutil.copytree(package_path, destinaton_path)
+
+def cleanup(base_path):
+  shutil.rmtree(os.path.join(base_path, 'packages'), True)
+  shutil.rmtree(os.path.join(base_path, '.pub'), True)
+  os.remove(os.path.join(base_path, '.packages'))
+
+def main():
+  parser = argparse.ArgumentParser(description='Update third_party packages')
+  parser.add_argument('--pub-exe',
+                      action='store',
+                      metavar='pub_exe',
+                      help='Path to the pub executable',
+                      default='../../../../third_party/dart-sdk/dart-sdk/bin/pub')
+
+  args = parser.parse_args()
+  if not check_for_pubspec_yaml():
+    print('Error could not find pubspec.yaml')
+    return 1
+
+  remove_existing_packages(SCRIPT_DIR)
+  change_directory(SCRIPT_DIR)
+  print('Running pub get')
+  pub_get(args.pub_exe)
+  copy_packages(SCRIPT_DIR)
+  print('Cleaning up')
+  cleanup(SCRIPT_DIR)
+
+if __name__ == '__main__':
+  sys.exit(main())