Make the fuchsia mojo/public repo the source of truth.

mojo/public/tools/dart_pkg.py

-#!/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 dart_pkg and dart_pkg_app rules"""
-
-import argparse
-import errno
-import json
-import os
-import shutil
-import subprocess
-import sys
-
-USE_LINKS = sys.platform != "win32"
-
-DART_ANALYZE = os.path.join(os.path.dirname(os.path.abspath(__file__)),
-                            "dart_analyze.py")
-
-def dart_filter(path):
-  if os.path.isdir(path):
-    return True
-  _, ext = os.path.splitext(path)
-  # .dart includes '.mojom.dart'
-  return ext == '.dart'
-
-
-def ensure_dir_exists(path):
-  abspath = os.path.abspath(path)
-  if not os.path.exists(abspath):
-    os.makedirs(abspath)
-
-
-def has_pubspec_yaml(paths):
-  for path in paths:
-    _, filename = os.path.split(path)
-    if 'pubspec.yaml' == filename:
-      return True
-  return False
-
-
-def link(from_root, to_root):
-  ensure_dir_exists(os.path.dirname(to_root))
-  try:
-    os.unlink(to_root)
-  except OSError as e:
-    if e.errno == errno.ENOENT:
-      pass
-
-  try:
-    os.symlink(from_root, to_root)
-  except OSError as e:
-    if e.errno == errno.EEXIST:
-      pass
-
-
-def copy(from_root, to_root, filter_func=None):
-  if not os.path.exists(from_root):
-    return
-  if os.path.isfile(from_root):
-    ensure_dir_exists(os.path.dirname(to_root))
-    shutil.copy(from_root, to_root)
-    return
-
-  ensure_dir_exists(to_root)
-
-  for root, dirs, files in os.walk(from_root):
-    # filter_func expects paths not names, so wrap it to make them absolute.
-    wrapped_filter = None
-    if filter_func:
-      wrapped_filter = lambda name: filter_func(os.path.join(root, name))
-
-    for name in filter(wrapped_filter, files):
-      from_path = os.path.join(root, name)
-      root_rel_path = os.path.relpath(from_path, from_root)
-      to_path = os.path.join(to_root, root_rel_path)
-      to_dir = os.path.dirname(to_path)
-      if not os.path.exists(to_dir):
-        os.makedirs(to_dir)
-      shutil.copy(from_path, to_path)
-
-    dirs[:] = filter(wrapped_filter, dirs)
-
-
-def copy_or_link(from_root, to_root, filter_func=None):
-  if USE_LINKS:
-    link(from_root, to_root)
-  else:
-    copy(from_root, to_root, filter_func)
-
-
-def link_if_possible(from_root, to_root):
-  if USE_LINKS:
-    link(from_root, to_root)
-
-
-def remove_if_exists(path):
-  try:
-    os.remove(path)
-  except OSError as e:
-    if e.errno != errno.ENOENT:
-      raise
-
-
-def list_files(from_root, filter_func=None):
-  file_list = []
-  for root, dirs, files in os.walk(from_root):
-    # filter_func expects paths not names, so wrap it to make them absolute.
-    wrapped_filter = None
-    if filter_func:
-      wrapped_filter = lambda name: filter_func(os.path.join(root, name))
-    for name in filter(wrapped_filter, files):
-      path = os.path.join(root, name)
-      file_list.append(path)
-    dirs[:] = filter(wrapped_filter, dirs)
-  return file_list
-
-
-def remove_broken_symlink(path):
-  try:
-    link_path = os.readlink(path)
-  except OSError as e:
-    # Path was not a symlink.
-    if e.errno == errno.EINVAL:
-      pass
-  else:
-    if not os.path.exists(link_path):
-      remove_if_exists(path)
-
-
-def remove_broken_symlinks(root_dir):
-  for current_dir, _, child_files in os.walk(root_dir):
-    for filename in child_files:
-      path = os.path.join(current_dir, filename)
-      remove_broken_symlink(path)
-
-
-def analyze_entrypoints(dart_sdk, package_root, entrypoints):
-  cmd = [ "python", DART_ANALYZE ]
-  cmd.append("--dart-sdk")
-  cmd.append(dart_sdk)
-  cmd.append("--entrypoints")
-  cmd.extend(entrypoints)
-  cmd.append("--package-root")
-  cmd.append(package_root)
-  cmd.append("--no-hints")
-  try:
-    subprocess.check_output(cmd, stderr=subprocess.STDOUT)
-  except subprocess.CalledProcessError as e:
-    print('Failed analyzing %s' % entrypoints)
-    print(e.output)
-    return e.returncode
-  return 0
-
-
-def main():
-  parser = argparse.ArgumentParser(description='Generate a dart-pkg')
-  parser.add_argument('--dart-sdk',
-                      action='store',
-                      metavar='dart_sdk',
-                      help='Path to the Dart SDK.')
-  parser.add_argument('--package-name',
-                      action='store',
-                      metavar='package_name',
-                      help='Name of package',
-                      required=True)
-  parser.add_argument('--pkg-directory',
-                      metavar='pkg_directory',
-                      help='Directory where dart_pkg should go',
-                      required=True)
-  parser.add_argument('--package-root',
-                      metavar='package_root',
-                      help='packages/ directory',
-                      required=True)
-  parser.add_argument('--stamp-file',
-                      metavar='stamp_file',
-                      help='timestamp file',
-                      required=True)
-  parser.add_argument('--entries-file',
-                      metavar='entries_file',
-                      help='script entries file',
-                      required=True)
-  parser.add_argument('--package-sources',
-                      metavar='package_sources',
-                      help='Package sources',
-                      nargs='+')
-  parser.add_argument('--package-entrypoints',
-                      metavar='package_entrypoints',
-                      help='Package entry points for analyzer',
-                      nargs='*',
-                      default=[])
-  parser.add_argument('--sdk-ext-directories',
-                      metavar='sdk_ext_directories',
-                      help='Directory containing .dart sources',
-                      nargs='*',
-                      default=[])
-  parser.add_argument('--sdk-ext-files',
-                      metavar='sdk_ext_files',
-                      help='List of .dart files that are part of of sdk_ext.',
-                      nargs='*',
-                      default=[])
-  parser.add_argument('--sdk-ext-mappings',
-                      metavar='sdk_ext_mappings',
-                      help='Mappings for SDK extension libraries.',
-                      nargs='*',
-                      default=[])
-  parser.add_argument('--read_only',
-                      action='store_true',
-                      dest='read_only',
-                      help='Package is a read only package.',
-                      default=False)
-  args = parser.parse_args()
-
-  # We must have a pubspec.yaml.
-  assert has_pubspec_yaml(args.package_sources)
-
-  target_dir = os.path.join(args.pkg_directory, args.package_name)
-  target_packages_dir = os.path.join(target_dir, 'packages')
-  lib_path = os.path.join(target_dir, "lib")
-  ensure_dir_exists(lib_path)
-
-  mappings = {}
-  for mapping in args.sdk_ext_mappings:
-    library, path = mapping.split(',', 1)
-    mappings[library] = '../sdk_ext/%s' % path
-
-  sdkext_path = os.path.join(lib_path, '_sdkext')
-  if mappings:
-    with open(sdkext_path, 'w') as stream:
-      json.dump(mappings, stream, sort_keys=True,
-                indent=2, separators=(',', ': '))
-  else:
-    remove_if_exists(sdkext_path)
-
-  # Copy or symlink package sources into pkg directory.
-  common_source_prefix = os.path.dirname(os.path.commonprefix(
-      args.package_sources))
-  for source in args.package_sources:
-    relative_source = os.path.relpath(source, common_source_prefix)
-    target = os.path.join(target_dir, relative_source)
-    copy_or_link(source, target)
-
-  entrypoint_targets = []
-  for source in args.package_entrypoints:
-    relative_source = os.path.relpath(source, common_source_prefix)
-    target = os.path.join(target_dir, relative_source)
-    copy_or_link(source, target)
-    entrypoint_targets.append(target)
-
-  # Copy sdk-ext sources into pkg directory
-  sdk_ext_dir = os.path.join(target_dir, 'sdk_ext')
-  for directory in args.sdk_ext_directories:
-    sdk_ext_sources = list_files(directory, dart_filter)
-    common_prefix = os.path.commonprefix(sdk_ext_sources)
-    for source in sdk_ext_sources:
-      relative_source = os.path.relpath(source, common_prefix)
-      target = os.path.join(sdk_ext_dir, relative_source)
-      copy_or_link(source, target)
-
-  common_source_prefix = os.path.dirname(os.path.commonprefix(
-      args.sdk_ext_files))
-  for source in args.sdk_ext_files:
-    relative_source = os.path.relpath(source, common_source_prefix)
-    target = os.path.join(sdk_ext_dir, relative_source)
-    copy_or_link(source, target)
-
-  # Symlink packages/
-  package_path = os.path.join(args.package_root, args.package_name)
-  link(lib_path, package_path)
-
-  # Link dart-pkg/$package/packages to dart-pkg/packages
-  link_if_possible(args.package_root, target_packages_dir)
-
-  # Remove any broken symlinks in target_dir and package root.
-  remove_broken_symlinks(target_dir)
-  remove_broken_symlinks(args.package_root)
-
-  # If any entrypoints are defined, write them to disk so that the analyzer
-  # test can find them.
-  with open(args.entries_file, 'w') as f:
-    for entrypoint in entrypoint_targets:
-      f.write(entrypoint + '\n')
-
-  # Write stamp file.
-  with open(args.stamp_file, 'w'):
-    pass
-
-  return 0
-
-if __name__ == '__main__':
-  sys.exit(main())