config/create_res.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 from argparse import (
   6     Action,
   7     ArgumentParser,
   8 )
   9 import os
  10 import subprocess
  11 import sys
  12 import tempfile
  13
  14 import buildconfig
  15
  16
  17 class CPPFlag(Action):
  18     all_flags = []
  19
  20     def __call__(self, parser, namespace, values, option_string=None):
  21         if "windres" in buildconfig.substs["RC"].lower():
  22             if option_string == "-U":
  23                 return
  24             if option_string == "-I":
  25                 option_string = "--include-dir"
  26
  27         self.all_flags.extend((option_string, values))
  28
  29
  30 def generate_res():
  31     parser = ArgumentParser()
  32     parser.add_argument(
  33         "-D", action=CPPFlag, metavar="VAR[=VAL]", help="Define a variable"
  34     )
  35     parser.add_argument("-U", action=CPPFlag, metavar="VAR", help="Undefine a variable")
  36     parser.add_argument(
  37         "-I", action=CPPFlag, metavar="DIR", help="Search path for includes"
  38     )
  39     parser.add_argument("-o", dest="output", metavar="OUTPUT", help="Output file")
  40     parser.add_argument("input", help="Input file")
  41     args = parser.parse_args()
  42
  43     is_windres = "windres" in buildconfig.substs["RC"].lower()
  44
  45     verbose = os.environ.get("BUILD_VERBOSE_LOG")
  46
  47     # llvm-rc doesn't preprocess on its own, so preprocess manually
  48     # Theoretically, not windres could be rc.exe, but configure won't use it
  49     # unless you really ask for it, and it will still work with preprocessed
  50     # output.
  51     try:
  52         if not is_windres:
  53             fd, path = tempfile.mkstemp(suffix=".rc")
  54             command = buildconfig.substs["CXXCPP"] + CPPFlag.all_flags
  55             command.extend(("-DRC_INVOKED", args.input))
  56
  57             cpu_arch_dict = {"x86_64": "_AMD64_", "x86": "_X86_", "aarch64": "_ARM64_"}
  58
  59             # add a preprocessor #define that specifies the CPU architecture
  60             cpu_arch_ppd = cpu_arch_dict[buildconfig.substs["CPU_ARCH"]]
  61
  62             command.extend(("-D", cpu_arch_ppd))
  63
  64             if verbose:
  65                 print("Executing:", " ".join(command))
  66             with os.fdopen(fd, "wb") as fh:
  67                 retcode = subprocess.run(command, stdout=fh).returncode
  68                 if retcode:
  69                     # Rely on the subprocess printing out any relevant error
  70                     return retcode
  71         else:
  72             path = args.input
  73
  74         command = [buildconfig.substs["RC"]]
  75         if is_windres:
  76             command.extend(("-O", "coff"))
  77
  78         # Even though llvm-rc doesn't preprocess, we still need to pass at least
  79         # the -I flags.
  80         command.extend(CPPFlag.all_flags)
  81
  82         if args.output:
  83             if is_windres:
  84                 command.extend(("-o", args.output))
  85             else:
  86                 # Use win1252 code page for the input.
  87                 command.extend(("-c", "1252", "-Fo" + args.output))
  88
  89         command.append(path)
  90
  91         if verbose:
  92             print("Executing:", " ".join(command))
  93         retcode = subprocess.run(command).returncode
  94         if retcode:
  95             # Rely on the subprocess printing out any relevant error
  96             return retcode
  97     finally:
  98         if path != args.input:
  99             os.remove(path)
 100
 101     return 0
 102
 103
 104 if __name__ == "__main__":
 105     sys.exit(generate_res())