Strip sections from an xcode project that aren't supported by cocoapods.

strip_xcode.py

# Copyright (C) 2018 Google Inc. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#    limitations under the License.

# copied from https://gist.github.com/johnb003/59842c752cbbbdcde00e2ca8ca33d4cb
# modified by IMG.LY 2022

import argparse
import os
import sys

def main():
  parser = argparse.ArgumentParser(description=(
      "This script strips 'buildSettings' and 'buildStyles' sections from an "
      "xcode PBXProject produced by cmake."))
  parser.add_argument("-p", help="Path to xcode project .pbxproj",
                      metavar="FILE", required=True)
  args = parser.parse_args()

  pbxproj = args.p

  project_section = False
  build_style_section = False
  writing = True

  with open(pbxproj, "r") as input_file:
    lines_in = input_file.readlines()
  with open(pbxproj, "w") as output_file:
    for line in lines_in:
      if "/* Begin PBXBuildStyle section */" in line:
        build_style_section = True
      elif "/* End PBXBuildStyle section */" in line:
        build_style_section = False
      elif "/* Begin PBXProject section */" in line:
        project_section = True

      elif project_section:
        if "/* End PBXProject section */" in line:
          project_section = False
        # Found the thing inside the project section we need to strip.
        if "buildSettings = {" in line or "buildStyles = (" in line:
          writing = False

      if not writing:
        # Strip lines until the end of the sections above
        if ");" in line or "};" in line:
          writing = True
      elif build_style_section:
        pass
      # writing _was_ True
      else:
        output_file.write(line);

  return 0

if __name__ == "__main__":
  sys.exit(main())