1 files changed, 84 insertions, 0 deletions
diff --git a/dartium_tools/roll_forward.py b/dartium_tools/roll_forward.py
new file mode 100755
index 0000000..de3bc4a
--- /dev/null
+++ b/dartium_tools/roll_forward.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python
+#
+# Copyright 2012 Google Inc. All Rights Reserved.
+
+import os
+import re
+import shutil
+import subprocess
+import sys
+import update_patched_files
+import urllib
+
+
+def GetLkgr():
+  f = urllib.urlopen('http://chromium-status.appspot.com/lkgr')
+  try:
+    return int(f.read())
+  finally:
+    f.close()
+
+
+def ReadDepsVars(path):
+  exec_globals = {
+    'Var': lambda name: exec_globals['vars'][name],
+  }
+  execfile(path, exec_globals)
+  return exec_globals['vars']
+
+
+def GetRevision(path, name):
+  return int(ReadDepsVars(path)[name])
+
+
+def main(argv):
+  CHROMIUM_DEPS_FILE = 'DEPS'
+  DARTIUM_DEPS_FILE = '../dartium.deps/DEPS'
+  CHROMIUM_DEPS_COPY = '../dartium.deps/DEPS.chromium'
+  REV_PATTERN = '"chromium_revision": "(\d+)",'
+
+  deps = file(DARTIUM_DEPS_FILE).read()
+  current_chrome_rev = int(re.search(REV_PATTERN, deps).group(1))
+
+  if len(argv) < 2:
+    next_chrome_rev = GetLkgr()
+  else:
+    next_chrome_rev = int(argv[1])
+
+  print 'Chromium roll: %d -> %d' % (current_chrome_rev, next_chrome_rev)
+
+  if current_chrome_rev == next_chrome_rev:
+    return
+
+  # Update patched files.
+  os.chdir('..')
+  update_patched_files.update_overridden_files(current_chrome_rev, next_chrome_rev)
+  os.chdir('src')
+
+  # Update DEPS.
+  subprocess.check_call(['svn', 'up', '-r', str(current_chrome_rev), CHROMIUM_DEPS_FILE])
+  current_webkit_rev = GetRevision(CHROMIUM_DEPS_FILE, 'webkit_revision')
+  subprocess.check_call(['svn', 'up', '-r', str(next_chrome_rev), CHROMIUM_DEPS_FILE])
+  next_webkit_rev = GetRevision(CHROMIUM_DEPS_FILE, 'webkit_revision')
+
+  shutil.copyfile(CHROMIUM_DEPS_FILE, CHROMIUM_DEPS_COPY)
+  deps = deps.replace('"chromium_revision": "%d",' % current_chrome_rev, '"chromium_revision": "%d",' % next_chrome_rev)
+  file(DARTIUM_DEPS_FILE, 'w').write(deps)
+
+  # Do webkit roll.
+  WEBKIT_DIR = 'third_party/WebKit'
+  subprocess.check_call(['git', 'svn', 'rebase'], cwd=WEBKIT_DIR)
+  print 'WebKit roll: %d -> %d' % (current_webkit_rev, next_webkit_rev)
+
+  if current_webkit_rev < next_webkit_rev:
+    subprocess.check_call(['bash',
+          '../../dartium_tools/roll_webkit.sh',
+          str(current_webkit_rev), str(next_webkit_rev)], cwd=WEBKIT_DIR)
+
+  # Update the checkout.
+  subprocess.check_call(['gclient', 'sync', '-j17'])
+
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))