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| 1 #!/usr/bin/env python |
| 2 # Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
| 3 # |
| 4 # Use of this source code is governed by a BSD-style license |
| 5 # that can be found in the LICENSE file in the root of the source |
| 6 # tree. An additional intellectual property rights grant can be found |
| 7 # in the file PATENTS. All contributing project authors may |
| 8 # be found in the AUTHORS file in the root of the source tree. |
| 9 |
| 10 """Script to cleanup symlinks created from setup_links.py. |
| 11 |
| 12 Before 177567c518b121731e507e9b9c4049c4dc96e4c8 (#15754) we had a Chromium |
| 13 checkout which we created symlinks into. In order to do clean syncs after |
| 14 landing that change, this script cleans up any old symlinks, avoiding annoying |
| 15 manual cleanup needed in order to complete gclient sync. |
| 16 """ |
| 17 |
| 18 import logging |
| 19 import optparse |
| 20 import os |
| 21 import shelve |
| 22 import subprocess |
| 23 import sys |
| 24 |
| 25 |
| 26 ROOT_DIR = os.path.dirname(os.path.abspath(__file__)) |
| 27 LINKS_DB = 'links' |
| 28 |
| 29 # Version management to make future upgrades/downgrades easier to support. |
| 30 SCHEMA_VERSION = 1 |
| 31 |
| 32 class WebRTCLinkSetup(object): |
| 33 def __init__(self, links_db, dry_run=False): |
| 34 self._dry_run = dry_run |
| 35 self._links_db = links_db |
| 36 |
| 37 def CleanupLinks(self): |
| 38 logging.debug('CleanupLinks') |
| 39 for source, link_path in self._links_db.iteritems(): |
| 40 if source == 'SCHEMA_VERSION': |
| 41 continue |
| 42 if os.path.islink(link_path) or sys.platform.startswith('win'): |
| 43 # os.path.islink() always returns false on Windows |
| 44 # See http://bugs.python.org/issue13143. |
| 45 logging.debug('Removing link to %s at %s', source, link_path) |
| 46 if not self._dry_run: |
| 47 if os.path.exists(link_path): |
| 48 if sys.platform.startswith('win') and os.path.isdir(link_path): |
| 49 subprocess.check_call(['rmdir', '/q', '/s', link_path], |
| 50 shell=True) |
| 51 else: |
| 52 os.remove(link_path) |
| 53 del self._links_db[source] |
| 54 |
| 55 |
| 56 def _initialize_database(filename): |
| 57 links_database = shelve.open(filename) |
| 58 # Wipe the database if this version of the script ends up looking at a |
| 59 # newer (future) version of the links db, just to be sure. |
| 60 version = links_database.get('SCHEMA_VERSION') |
| 61 if version and version != SCHEMA_VERSION: |
| 62 logging.info('Found database with schema version %s while this script only ' |
| 63 'supports %s. Wiping previous database contents.', version, |
| 64 SCHEMA_VERSION) |
| 65 links_database.clear() |
| 66 links_database['SCHEMA_VERSION'] = SCHEMA_VERSION |
| 67 return links_database |
| 68 |
| 69 |
| 70 def main(): |
| 71 parser = optparse.OptionParser() |
| 72 parser.add_option('-d', '--dry-run', action='store_true', default=False, |
| 73 help='Print what would be done, but don\'t perform any ' |
| 74 'operations. This will automatically set logging to ' |
| 75 'verbose.') |
| 76 parser.add_option('-v', '--verbose', action='store_const', |
| 77 const=logging.DEBUG, default=logging.INFO, |
| 78 help='Print verbose output for debugging.') |
| 79 options, _ = parser.parse_args() |
| 80 |
| 81 if options.dry_run: |
| 82 options.verbose = logging.DEBUG |
| 83 logging.basicConfig(format='%(message)s', level=options.verbose) |
| 84 |
| 85 # Work from the root directory of the checkout. |
| 86 script_dir = os.path.dirname(os.path.abspath(__file__)) |
| 87 os.chdir(script_dir) |
| 88 |
| 89 # The database file gets .db appended on some platforms. |
| 90 db_filenames = [LINKS_DB, LINKS_DB + '.db'] |
| 91 if any(os.path.isfile(f) for f in db_filenames): |
| 92 links_database = _initialize_database(LINKS_DB) |
| 93 try: |
| 94 symlink_creator = WebRTCLinkSetup(links_database, options.dry_run) |
| 95 symlink_creator.CleanupLinks() |
| 96 finally: |
| 97 for f in db_filenames: |
| 98 if os.path.isfile(f): |
| 99 os.remove(f) |
| 100 return 0 |
| 101 |
| 102 |
| 103 if __name__ == '__main__': |
| 104 sys.exit(main()) |
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