mojo/tools/rev_sdk.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Tool to roll Mojo into Chromium. See:
   7 https://github.com/domokit/mojo/wiki/Rolling-code-between-chromium-and-mojo#mojo---chromium-updates-sdk--edk
   8 """
   9
  10 import os
  11 import sys
  12 from utils import commit
  13 from utils import chromium_root_dir
  14 from utils import system
  15
  16 sdk_prefix_in_chromium = "third_party/mojo/src"
  17 sdk_dirs_to_clone = [
  18   "mojo/edk",
  19   "mojo/public",
  20   "nacl_bindings",
  21 ]
  22
  23 sdk_dirs_to_not_clone = [
  24   "mojo/public/cpp/application",
  25   "mojo/public/interfaces/application",
  26 ]
  27
  28 # Individual files to preserve within the target repository during roll. These
  29 # are relative to |sdk_prefix_in_chromium| but are not maintained in the mojo
  30 # repository.
  31 preserved_chromium_files = [
  32   "mojo/edk/DEPS",
  33   "mojo/public/DEPS",
  34   "mojo/public/platform/nacl/DEPS",
  35   "nacl_bindings/DEPS",
  36 ]
  37
  38 # A dictionary mapping dirs to clone to their destination locations in Chromium.
  39 dirs_to_clone = {}
  40
  41 for sdk_dir in sdk_dirs_to_clone:
  42   sdk_dir_in_chromium = os.path.join(sdk_prefix_in_chromium, sdk_dir)
  43   dirs_to_clone[sdk_dir] = sdk_dir_in_chromium
  44
  45 def rev(source_dir, chromium_dir):
  46   src_commit = system(["git", "show-ref", "HEAD", "-s"], cwd=source_dir).strip()
  47
  48   for input_dir, dest_dir in dirs_to_clone.iteritems():
  49     if os.path.exists(os.path.join(chromium_dir, dest_dir)):
  50       print "removing directory %s" % dest_dir
  51       system(["git", "rm", "-r", dest_dir], cwd=chromium_dir)
  52     print "cloning directory %s into %s" % (input_dir, dest_dir)
  53     files = system(["git", "ls-files", input_dir], cwd=source_dir)
  54     for f in files.splitlines():
  55       # Don't copy presubmit files over since the code is read-only on the
  56       # chromium side.
  57       if os.path.basename(f) == "PRESUBMIT.py":
  58         continue
  59
  60       exclude = False
  61       for excluded in sdk_dirs_to_not_clone:
  62         if f.startswith(excluded):
  63           exclude = True
  64           break
  65       if exclude:
  66         continue
  67
  68       # Clone |f| into Chromium under |dest_dir| at its location relative to
  69       # |input_dir|.
  70       f_relpath = os.path.relpath(f, input_dir)
  71       dest_path = os.path.join(chromium_dir, dest_dir, f_relpath)
  72       system(["mkdir", "-p", os.path.dirname(dest_path)])
  73       system(["cp", os.path.join(source_dir, f), dest_path])
  74     os.chdir(chromium_dir)
  75     system(["git", "add", dest_dir], cwd=chromium_dir)
  76
  77   mojo_public_dest_dir = os.path.join(sdk_prefix_in_chromium, "mojo/public")
  78   version_filename = os.path.join(mojo_public_dest_dir, "VERSION")
  79   with open(version_filename, "w") as version_file:
  80     version_file.write(src_commit)
  81   system(["git", "add", version_filename], cwd=chromium_dir)
  82
  83   # Reset preserved files that were blown away.
  84   for rel_path in preserved_chromium_files:
  85     preserved_path = os.path.join(sdk_prefix_in_chromium, rel_path)
  86     system(["git", "reset", "--", preserved_path])
  87     system(["git", "checkout", preserved_path])
  88
  89   commit("Update mojo sdk to rev " + src_commit, cwd=chromium_dir)
  90
  91 if len(sys.argv) != 2:
  92   print "usage: rev_sdk.py <mojo source dir>"
  93   sys.exit(1)
  94
  95 rev(sys.argv[1], chromium_root_dir)