1#!/usr/bin/env vpython3 2 3# Copyright 2017 The LibYuv Project Authors. All rights reserved. 4# 5# Use of this source code is governed by a BSD-style license 6# that can be found in the LICENSE file in the root of the source 7# tree. An additional intellectual property rights grant can be found 8# in the file PATENTS. All contributing project authors may 9# be found in the AUTHORS file in the root of the source tree. 10 11# This is a copy of the file from WebRTC in: 12# https://chromium.googlesource.com/external/webrtc/+/master/cleanup_links.py 13 14"""Script to cleanup symlinks created from setup_links.py. 15 16Before 177567c518b121731e507e9b9c4049c4dc96e4c8 (#15754) we had a Chromium 17checkout which we created symlinks into. In order to do clean syncs after 18landing that change, this script cleans up any old symlinks, avoiding annoying 19manual cleanup needed in order to complete gclient sync. 20""" 21 22import argparse 23import logging 24import os 25import shelve 26import subprocess 27import sys 28 29 30ROOT_DIR = os.path.dirname(os.path.abspath(__file__)) 31LINKS_DB = 'links' 32 33# Version management to make future upgrades/downgrades easier to support. 34SCHEMA_VERSION = 1 35 36class WebRTCLinkSetup(): 37 def __init__(self, links_db, dry_run=False): 38 self._dry_run = dry_run 39 self._links_db = links_db 40 41 def CleanupLinks(self): 42 logging.debug('CleanupLinks') 43 for source, link_path in self._links_db.tems(): 44 if source == 'SCHEMA_VERSION': 45 continue 46 if os.path.islink(link_path) or sys.platform.startswith('win'): 47 # os.path.islink() always returns false on Windows 48 # See http://bugs.python.org/issue13143. 49 logging.debug('Removing link to %s at %s', source, link_path) 50 if not self._dry_run: 51 if os.path.exists(link_path): 52 if sys.platform.startswith('win') and os.path.isdir(link_path): 53 subprocess.check_call(['rmdir', '/q', '/s', link_path], 54 shell=True) 55 else: 56 os.remove(link_path) 57 del self._links_db[source] 58 59 60def _initialize_database(filename): 61 links_database = shelve.open(filename) 62 # Wipe the database if this version of the script ends up looking at a 63 # newer (future) version of the links db, just to be sure. 64 version = links_database.get('SCHEMA_VERSION') 65 if version and version != SCHEMA_VERSION: 66 logging.info('Found database with schema version %s while this script only ' 67 'supports %s. Wiping previous database contents.', version, 68 SCHEMA_VERSION) 69 links_database.clear() 70 links_database['SCHEMA_VERSION'] = SCHEMA_VERSION 71 return links_database 72 73 74def main(): 75 p = argparse.ArgumentParser() 76 p.add_argument('-d', '--dry-run', action='store_true', default=False, 77 help='Print what would be done, but don\'t perform any ' 78 'operations. This will automatically set logging to ' 79 'verbose.') 80 p.add_argument('-v', '--verbose', action='store_const', 81 const=logging.DEBUG, default=logging.INFO, 82 help='Print verbose output for debugging.') 83 options = p.parse_args() 84 85 if options.dry_run: 86 options.verbose = logging.DEBUG 87 logging.basicConfig(format='%(message)s', level=options.verbose) 88 89 # Work from the root directory of the checkout. 90 script_dir = os.path.dirname(os.path.abspath(__file__)) 91 os.chdir(script_dir) 92 93 # The database file gets .db appended on some platforms. 94 db_filenames = [LINKS_DB, LINKS_DB + '.db'] 95 if any(os.path.isfile(f) for f in db_filenames): 96 links_database = _initialize_database(LINKS_DB) 97 try: 98 symlink_creator = WebRTCLinkSetup(links_database, options.dry_run) 99 symlink_creator.CleanupLinks() 100 finally: 101 for f in db_filenames: 102 if os.path.isfile(f): 103 os.remove(f) 104 return 0 105 106 107if __name__ == '__main__': 108 sys.exit(main()) 109