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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_35_REVISION = '260135'
     14 CHROME_36_REVISION = '269696'
     15 CHROME_37_REVISION = '278933'
     16 
     17 _SITE = 'http://commondatastorage.googleapis.com'
     18 
     19 
     20 class Site(object):
     21   CONTINUOUS = _SITE + '/chromium-browser-continuous'
     22   CHROMIUM_SNAPSHOT = _SITE + '/chromium-browser-snapshots'
     23   BLINK_SNAPSHOT = _SITE + '/chromium-webkit-snapshots'
     24 
     25 
     26 def GetLatestRevision(site=Site.CONTINUOUS):
     27   """Returns the latest revision (as a string) available for this platform.
     28 
     29   Args:
     30     site: the archive site to check against, default to the continuous one.
     31   """
     32   url = site + '/%s/LAST_CHANGE'
     33   return urllib.urlopen(url % _GetDownloadPlatform()).read()
     34 
     35 
     36 def DownloadChrome(revision, dest_dir, site=Site.CONTINUOUS):
     37   """Downloads the packaged Chrome from the archive to the given directory.
     38 
     39   Args:
     40     revision: the revision of Chrome to download.
     41     dest_dir: the directory to download Chrome to.
     42     site: the archive site to download from, default to the continuous one.
     43 
     44   Returns:
     45     The path to the unzipped Chrome binary.
     46   """
     47   def GetZipName():
     48     if util.IsWindows():
     49       return 'chrome-win32'
     50     elif util.IsMac():
     51       return 'chrome-mac'
     52     elif util.IsLinux():
     53       return 'chrome-linux'
     54   def GetChromePathFromPackage():
     55     if util.IsWindows():
     56       return 'chrome.exe'
     57     elif util.IsMac():
     58       return 'Chromium.app/Contents/MacOS/Chromium'
     59     elif util.IsLinux():
     60       return 'chrome'
     61   zip_path = os.path.join(dest_dir, 'chrome-%s.zip' % revision)
     62   if not os.path.exists(zip_path):
     63     url = site + '/%s/%s/%s.zip' % (_GetDownloadPlatform(), revision,
     64                                     GetZipName())
     65     print 'Downloading', url, '...'
     66     urllib.urlretrieve(url, zip_path)
     67   util.Unzip(zip_path, dest_dir)
     68   return os.path.join(dest_dir, GetZipName(), GetChromePathFromPackage())
     69 
     70 
     71 def _GetDownloadPlatform():
     72   """Returns the name for this platform on the archive site."""
     73   if util.IsWindows():
     74     return 'Win'
     75   elif util.IsMac():
     76     return 'Mac'
     77   elif util.IsLinux():
     78     if platform.architecture()[0] == '64bit':
     79       return 'Linux_x64'
     80     else:
     81       return 'Linux'
     82 
     83 def GetLatestSnapshotVersion():
     84   """Returns the latest revision of snapshot build."""
     85   return GetLatestRevision(GetSnapshotDownloadSite())
     86 
     87 def GetSnapshotDownloadSite():
     88   """Returns the site to download snapshot build according to the platform.
     89 
     90   For Linux 32-bit, it is chromium snapshot build.
     91   For other platform, it is blink snapshot build.
     92   Because there is no linux32 blink snapshot build.
     93   """
     94   if _GetDownloadPlatform() in ('Linux', 'Linux_x64', 'Mac'):
     95     return Site.CHROMIUM_SNAPSHOT
     96   else:
     97     return Site.BLINK_SNAPSHOT
     98