Add a snapshot of flutter/engine/src/build to our sdk

build/mac/tweak_info_plist.py

Index: build/mac/tweak_info_plist.py
diff --git a/build/mac/tweak_info_plist.py b/build/mac/tweak_info_plist.py
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+++ b/build/mac/tweak_info_plist.py
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+#!/usr/bin/env python
+
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+#
+# Xcode supports build variable substitutions and CPP; sadly, that doesn't work
+# because:
+#
+# 1. Xcode wants to do the Info.plist work before it runs any build phases,
+#    this means if we were to generate a .h file for INFOPLIST_PREFIX_HEADER
+#    we'd have to put it in another target so it runs in time.
+# 2. Xcode also doesn't check to see if the header being used as a prefix for
+#    the Info.plist has changed.  So even if we updated it, it's only looking
+#    at the modtime of the info.plist to see if that's changed.
+#
+# So, we work around all of this by making a script build phase that will run
+# during the app build, and simply update the info.plist in place.  This way
+# by the time the app target is done, the info.plist is correct.
+#
+
+import optparse
+import os
+from os import environ as env
+import plistlib
+import re
+import subprocess
+import sys
+import tempfile
+
+TOP = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
+
+
+def _GetOutput(args):
+  """Runs a subprocess and waits for termination. Returns (stdout, returncode)
+  of the process. stderr is attached to the parent."""
+  proc = subprocess.Popen(args, stdout=subprocess.PIPE)
+  (stdout, stderr) = proc.communicate()
+  return (stdout, proc.returncode)
+
+
+def _GetOutputNoError(args):
+  """Similar to _GetOutput() but ignores stderr. If there's an error launching
+  the child (like file not found), the exception will be caught and (None, 1)
+  will be returned to mimic quiet failure."""
+  try:
+    proc = subprocess.Popen(args, stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+  except OSError:
+    return (None, 1)
+  (stdout, stderr) = proc.communicate()
+  return (stdout, proc.returncode)
+
+
+def _RemoveKeys(plist, *keys):
+  """Removes a varargs of keys from the plist."""
+  for key in keys:
+    try:
+      del plist[key]
+    except KeyError:
+      pass
+
+
+def _AddVersionKeys(plist, version=None):
+  """Adds the product version number into the plist. Returns True on success and
+  False on error. The error will be printed to stderr."""
+  if version:
+    match = re.match('\d+\.\d+\.(\d+\.\d+)$', version)
+    if not match:
+      print >>sys.stderr, 'Invalid version string specified: "%s"' % version
+      return False
+
+    full_version = match.group(0)
+    bundle_version = match.group(1)
+
+  else:
+    # Pull in the Chrome version number.
+    VERSION_TOOL = os.path.join(TOP, 'build/util/version.py')
+    VERSION_FILE = os.path.join(TOP, 'chrome/VERSION')
+
+    (stdout, retval1) = _GetOutput([VERSION_TOOL, '-f', VERSION_FILE, '-t',
+                                    '@MAJOR@.@MINOR@.@BUILD@.@PATCH@'])
+    full_version = stdout.rstrip()
+
+    (stdout, retval2) = _GetOutput([VERSION_TOOL, '-f', VERSION_FILE, '-t',
+                                    '@BUILD@.@PATCH@'])
+    bundle_version = stdout.rstrip()
+
+    # If either of the two version commands finished with non-zero returncode,
+    # report the error up.
+    if retval1 or retval2:
+      return False
+
+  # Add public version info so "Get Info" works.
+  plist['CFBundleShortVersionString'] = full_version
+
+  # Honor the 429496.72.95 limit.  The maximum comes from splitting 2^32 - 1
+  # into  6, 2, 2 digits.  The limitation was present in Tiger, but it could
+  # have been fixed in later OS release, but hasn't been tested (it's easy
+  # enough to find out with "lsregister -dump).
+  # http://lists.apple.com/archives/carbon-dev/2006/Jun/msg00139.html
+  # BUILD will always be an increasing value, so BUILD_PATH gives us something
+  # unique that meetings what LS wants.
+  plist['CFBundleVersion'] = bundle_version
+
+  # Return with no error.
+  return True
+
+
+def _DoSCMKeys(plist, add_keys):
+  """Adds the SCM information, visible in about:version, to property list. If
+  |add_keys| is True, it will insert the keys, otherwise it will remove them."""
+  scm_revision = None
+  if add_keys:
+    # Pull in the Chrome revision number.
+    VERSION_TOOL = os.path.join(TOP, 'build/util/version.py')
+    LASTCHANGE_FILE = os.path.join(TOP, 'build/util/LASTCHANGE')
+    (stdout, retval) = _GetOutput([VERSION_TOOL, '-f', LASTCHANGE_FILE, '-t',
+                                  '@LASTCHANGE@'])
+    if retval:
+      return False
+    scm_revision = stdout.rstrip()
+
+  # See if the operation failed.
+  _RemoveKeys(plist, 'SCMRevision')
+  if scm_revision != None:
+    plist['SCMRevision'] = scm_revision
+  elif add_keys:
+    print >>sys.stderr, 'Could not determine SCM revision.  This may be OK.'
+
+  return True
+
+
+def _AddBreakpadKeys(plist, branding):
+  """Adds the Breakpad keys. This must be called AFTER _AddVersionKeys() and
+  also requires the |branding| argument."""
+  plist['BreakpadReportInterval'] = '3600'  # Deliberately a string.
+  plist['BreakpadProduct'] = '%s_Mac' % branding
+  plist['BreakpadProductDisplay'] = branding
+  plist['BreakpadVersion'] = plist['CFBundleShortVersionString']
+  # These are both deliberately strings and not boolean.
+  plist['BreakpadSendAndExit'] = 'YES'
+  plist['BreakpadSkipConfirm'] = 'YES'
+
+
+def _RemoveBreakpadKeys(plist):
+  """Removes any set Breakpad keys."""
+  _RemoveKeys(plist,
+      'BreakpadURL',
+      'BreakpadReportInterval',
+      'BreakpadProduct',
+      'BreakpadProductDisplay',
+      'BreakpadVersion',
+      'BreakpadSendAndExit',
+      'BreakpadSkipConfirm')
+
+
+def _TagSuffixes():
+  # Keep this list sorted in the order that tag suffix components are to
+  # appear in a tag value. That is to say, it should be sorted per ASCII.
+  components = ('32bit', 'full')
+  assert tuple(sorted(components)) == components
+
+  components_len = len(components)
+  combinations = 1 << components_len
+  tag_suffixes = []
+  for combination in xrange(0, combinations):
+    tag_suffix = ''
+    for component_index in xrange(0, components_len):
+      if combination & (1 << component_index):
+        tag_suffix += '-' + components[component_index]
+    tag_suffixes.append(tag_suffix)
+  return tag_suffixes
+
+
+def _AddKeystoneKeys(plist, bundle_identifier):
+  """Adds the Keystone keys. This must be called AFTER _AddVersionKeys() and
+  also requires the |bundle_identifier| argument (com.example.product)."""
+  plist['KSVersion'] = plist['CFBundleShortVersionString']
+  plist['KSProductID'] = bundle_identifier
+  plist['KSUpdateURL'] = 'https://tools.google.com/service/update2'
+
+  _RemoveKeys(plist, 'KSChannelID')
+  for tag_suffix in _TagSuffixes():
+    if tag_suffix:
+      plist['KSChannelID' + tag_suffix] = tag_suffix
+
+
+def _RemoveKeystoneKeys(plist):
+  """Removes any set Keystone keys."""
+  _RemoveKeys(plist,
+      'KSVersion',
+      'KSProductID',
+      'KSUpdateURL')
+
+  tag_keys = []
+  for tag_suffix in _TagSuffixes():
+    tag_keys.append('KSChannelID' + tag_suffix)
+  _RemoveKeys(plist, *tag_keys)
+
+
+def Main(argv):
+  parser = optparse.OptionParser('%prog [options]')
+  parser.add_option('--breakpad', dest='use_breakpad', action='store',
+      type='int', default=False, help='Enable Breakpad [1 or 0]')
+  parser.add_option('--breakpad_uploads', dest='breakpad_uploads',
+      action='store', type='int', default=False,
+      help='Enable Breakpad\'s uploading of crash dumps [1 or 0]')
+  parser.add_option('--keystone', dest='use_keystone', action='store',
+      type='int', default=False, help='Enable Keystone [1 or 0]')
+  parser.add_option('--scm', dest='add_scm_info', action='store', type='int',
+      default=True, help='Add SCM metadata [1 or 0]')
+  parser.add_option('--branding', dest='branding', action='store',
+      type='string', default=None, help='The branding of the binary')
+  parser.add_option('--bundle_id', dest='bundle_identifier',
+      action='store', type='string', default=None,
+      help='The bundle id of the binary')
+  parser.add_option('--version', dest='version', action='store', type='string',
+      default=None, help='The version string [major.minor.build.patch]')
+  (options, args) = parser.parse_args(argv)
+
+  if len(args) > 0:
+    print >>sys.stderr, parser.get_usage()
+    return 1
+
+  # Read the plist into its parsed format.
+  DEST_INFO_PLIST = os.path.join(env['TARGET_BUILD_DIR'], env['INFOPLIST_PATH'])
+  plist = plistlib.readPlist(DEST_INFO_PLIST)
+
+  # Insert the product version.
+  if not _AddVersionKeys(plist, version=options.version):
+    return 2
+
+  # Add Breakpad if configured to do so.
+  if options.use_breakpad:
+    if options.branding is None:
+      print >>sys.stderr, 'Use of Breakpad requires branding.'
+      return 1
+    _AddBreakpadKeys(plist, options.branding)
+    if options.breakpad_uploads:
+      plist['BreakpadURL'] = 'https://clients2.google.com/cr/report'
+    else:
+      # This allows crash dumping to a file without uploading the
+      # dump, for testing purposes.  Breakpad does not recognise
+      # "none" as a special value, but this does stop crash dump
+      # uploading from happening.  We need to specify something
+      # because if "BreakpadURL" is not present, Breakpad will not
+      # register its crash handler and no crash dumping will occur.
+      plist['BreakpadURL'] = 'none'
+  else:
+    _RemoveBreakpadKeys(plist)
+
+  # Only add Keystone in Release builds.
+  if options.use_keystone and env['CONFIGURATION'] == 'Release':
+    if options.bundle_identifier is None:
+      print >>sys.stderr, 'Use of Keystone requires the bundle id.'
+      return 1
+    _AddKeystoneKeys(plist, options.bundle_identifier)
+  else:
+    _RemoveKeystoneKeys(plist)
+
+  # Adds or removes any SCM keys.
+  if not _DoSCMKeys(plist, options.add_scm_info):
+    return 3
+
+  # Now that all keys have been mutated, rewrite the file.
+  temp_info_plist = tempfile.NamedTemporaryFile()
+  plistlib.writePlist(plist, temp_info_plist.name)
+
+  # Info.plist will work perfectly well in any plist format, but traditionally
+  # applications use xml1 for this, so convert it to ensure that it's valid.
+  proc = subprocess.Popen(['plutil', '-convert', 'xml1', '-o', DEST_INFO_PLIST,
+                           temp_info_plist.name])
+  proc.wait()
+  return proc.returncode
+
+
+if __name__ == '__main__':
+  sys.exit(Main(sys.argv[1:]))