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      1 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 # Use of this source code is governed by a BSD-style license that can be
      3 # found in the LICENSE file.
      4 
      5 """Downloads items from the Chromium continuous archive."""
      6 
      7 import os
      8 import platform
      9 import urllib
     10 
     11 import util
     12 
     13 CHROME_30_REVISION = '217281'
     14 CHROME_31_REVISION = '225096'
     15 CHROME_32_REVISION = '232870'
     16 
     17 _SITE = 'http://commondatastorage.googleapis.com'
     18 
     19 
     20 class Site(object):
     21   CONTINUOUS = _SITE + '/chromium-browser-continuous'
     22   SNAPSHOT = _SITE + '/chromium-browser-snapshots'
     23 
     24 
     25 def GetLatestRevision(site=Site.CONTINUOUS):
     26   """Returns the latest revision (as a string) available for this platform.
     27 
     28   Args:
     29     site: the archive site to check against, default to the continuous one.
     30   """
     31   url = site + '/%s/LAST_CHANGE'
     32   return urllib.urlopen(url % _GetDownloadPlatform()).read()
     33 
     34 
     35 def DownloadChrome(revision, dest_dir, site=Site.CONTINUOUS):
     36   """Downloads the packaged Chrome from the archive to the given directory.
     37 
     38   Args:
     39     revision: the revision of Chrome to download.
     40     dest_dir: the directory to download Chrome to.
     41     site: the archive site to download from, default to the continuous one.
     42 
     43   Returns:
     44     The path to the unzipped Chrome binary.
     45   """
     46   def GetZipName():
     47     if util.IsWindows():
     48       return 'chrome-win32'
     49     elif util.IsMac():
     50       return 'chrome-mac'
     51     elif util.IsLinux():
     52       return 'chrome-linux'
     53   def GetChromePathFromPackage():
     54     if util.IsWindows():
     55       return 'chrome.exe'
     56     elif util.IsMac():
     57       return 'Chromium.app/Contents/MacOS/Chromium'
     58     elif util.IsLinux():
     59       return 'chrome'
     60   zip_path = os.path.join(dest_dir, 'chrome-%s.zip' % revision)
     61   if not os.path.exists(zip_path):
     62     url = site + '/%s/%s/%s.zip' % (_GetDownloadPlatform(), revision,
     63                                     GetZipName())
     64     print 'Downloading', url, '...'
     65     urllib.urlretrieve(url, zip_path)
     66   util.Unzip(zip_path, dest_dir)
     67   return os.path.join(dest_dir, GetZipName(), GetChromePathFromPackage())
     68 
     69 
     70 def _GetDownloadPlatform():
     71   """Returns the name for this platform on the archive site."""
     72   if util.IsWindows():
     73     return 'Win'
     74   elif util.IsMac():
     75     return 'Mac'
     76   elif util.IsLinux():
     77     if platform.architecture()[0] == '64bit':
     78       return 'Linux_x64'
     79     else:
     80       return 'Linux'
     81