Remove package root target and support scripts

tools/make_links.py

-#!/usr/bin/env python
-# Copyright (c) 2012, 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.
-
-
-"""Tool for creating symlinks from SOURCES to TARGET.
-
-For each SOURCE in SOURCES create a link from SOURCE to TARGET.  If a
-SOURCE ends with .../lib, the lib suffix is ignored when determining
-the name of the target link.
-
-If a SOURCE contains ":", the left side is the path and the right side is the
-name of the package symlink.
-
-Before creating any links, the old entries of the TARGET directory will be
-removed.
-
-Usage:
-  python tools/make_links.py OPTIONS TARGET SOURCES...
-
-"""
-
-import optparse
-import os
-import shutil
-import subprocess
-import sys
-import urllib
-import urlparse
-import utils
-
-# Useful messages when we find orphaned checkouts.
-old_directories = {
-    'package_config': 'Please remove third_party/pkg/package_config.',
-    'analyzer_cli': 'Please remove third_party/pkg/analyzer_cli.'}
-
-def get_options():
-  result = optparse.OptionParser()
-  result.add_option("--timestamp_file", "",
-      help='Create a timestamp file when done creating the links.',
-      default='')
-  result.add_option("-q", "--quiet",
-      help="Don't print any messages",
-      action="store_true",
-      dest="quiet",
-      default=False)
-  result.add_option("--create-links",
-      help='Create links to the package lib directories in "packages/".',
-      action='store_false',
-      default=True)
-  result.add_option("--create-package-file",
-      help='Create a ".packages" file pointing to the packages.',
-      action='store_false',
-      default=True)
-
-  return result.parse_args()
-
-def make_link(quiet, source, target, orig_source):
-  if os.path.islink(target):
-    if not quiet:
-      print 'Removing %s' % target
-    sys.stdout.flush()
-    os.unlink(target)
-
-  if os.path.isdir(target):
-    if not quiet:
-      print 'Removing %s' % target
-    sys.stdout.flush()
-    os.rmdir(target)
-
-  if os.path.isfile(orig_source):
-    if not quiet:
-      print 'Copying file from %s to %s' % (orig_source, target)
-    sys.stdout.flush()
-    shutil.copyfile(orig_source, target)
-    return 0
-  else:
-    if not quiet:
-      print 'Creating link from %s to %s' % (source, target)
-    sys.stdout.flush()
-
-    if utils.GuessOS() == 'win32':
-      return subprocess.call(['mklink', '/j', target, source], shell=True)
-    else:
-      return subprocess.call(['ln', '-s', source, target])
-
-def create_timestamp_file(options):
-  if options.timestamp_file != '':
-    dir_name = os.path.dirname(options.timestamp_file)
-    if not os.path.exists(dir_name):
-      os.mkdir(dir_name)
-    open(options.timestamp_file, 'w').close()
-
-def main(argv):
-  (options, args) = get_options()
-  target_dir = os.path.relpath(args[0])
-  target = os.path.join(target_dir, 'packages')
-  if os.path.exists(target):
-    # If the packages directory already exists, delete the current links in
-    # it. This is necessary, otherwise we can end up having links in there
-    # pointing to directories which no longer exist (on incremental builds).
-    for link in os.listdir(target):
-      full_link = os.path.join(target, link)
-      if os.path.isdir(full_link) and utils.IsWindows():
-        # It seems like python on Windows is treating pseudo symlinks to
-        # directories as directories.
-        os.rmdir(full_link)
-      else:
-        os.remove(full_link)
-  else:
-    os.makedirs(target)
-  target = os.path.join(target_dir, '.packages')
-  if os.path.exists(target):
-    os.remove(target)
-
-  linked_names = {};
-  package_file_contents = '# .package file created by tools/make_links.py\n'
-  for source in args[1:]:
-    # Assume the source directory is named ".../NAME/lib".
-    split = source.split(':')
-    name = None
-    if len(split) == 2: (source, name) = split
-
-    (path, lib) = os.path.split(source)
-    if lib != 'lib':
-      path = source
-    # Remove any additional path components preceding NAME, if one wasn't
-    # specified explicitly.
-    if not name: (_, name) = os.path.split(path)
-    # We have an issue with left-behind checkouts in third_party/pkg and
-    # third_party/pkg_tested when we move entries in DEPS. This reports them.
-    if name in linked_names:
-      print 'Duplicate directory %s is linked to both %s and %s.' % (
-          name, linked_names[name], path)
-      if name in old_directories:
-        print old_directories[name]
-      return 1
-    linked_names[name] = path
-    orig_source = source
-    if options.create_links:
-      if utils.GuessOS() == 'win32':
-        source = os.path.relpath(source)
-      else:
-        source = os.path.relpath(source, start=target)
-        exit_code = make_link(options.quiet,
-                              source, os.path.join(target, name), orig_source)
-        if exit_code != 0:
-          return exit_code
-    abs_source = os.path.abspath(orig_source)
-    source_url = urlparse.urljoin('file:', urllib.pathname2url(abs_source))
-    package_file_contents += '%s:%s\n' % (name, source_url)
-  if options.create_package_file:
-    with open(os.path.join(target_dir, '.packages'), 'w') as package_file:
-      package_file.write(package_file_contents)
-  create_timestamp_file(options)
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))