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#!/usr/bin/env python3
import argparse
import os
import sys
import subprocess
import tempfile
script_dir = os.path.dirname(os.path.realpath(__file__))
root_dir = os.path.abspath(os.path.join(script_dir, ".."))
# Project-specific
CPP_FLAGS = [
"-I.",
"-Iinclude",
"-Isrc",
"-Ibin",
"-Ibuild",
"-Ilib/ultralib/include",
"-Ilib/ultralib/include/PR",
"-Ilib/ultralib/include/ido",
"-D_LANGUAGE_C",
"-DF3DEX_GBI_2",
"-D__USE_ISOC99",
"-DNDEBUG",
"-D_FINALROM",
"-D_MIPS_SZLONG=32",
"-D__USE_ISOC99",
"-DM2CTX",
"-DCC_CHECK=1"
"-DNON_MATCHING",
"-ffreestanding",
"-std=gnu89",
]
def import_c_file(in_file) -> str:
in_file = os.path.relpath(in_file, root_dir)
cpp_command = ["gcc", "-E", "-P", "-undef", "-dD", *CPP_FLAGS, in_file]
with tempfile.NamedTemporaryFile(suffix=".c") as tmp:
stock_macros = subprocess.check_output(["gcc", "-E", "-P", "-undef", "-dM", tmp.name], cwd=root_dir, encoding="utf-8")
try:
out_text = subprocess.check_output(cpp_command, cwd=root_dir, encoding="utf-8")
except subprocess.CalledProcessError:
print(
"Failed to preprocess input file, when running command:\n"
+ " ".join(cpp_command),
file=sys.stderr,
)
sys.exit(1)
if not out_text:
print("Output is empty - aborting")
sys.exit(1)
defines = {}
source_lines = []
for line in out_text.splitlines(keepends=True):
if line.startswith("#define"):
sym = line.split()[1].split("(")[0]
defines[sym] = line
elif line.startswith("#undef"):
sym = line.split()[1]
if sym in defines:
del defines[sym]
else:
source_lines.append(line)
for line in stock_macros.strip().splitlines():
sym = line.split()[1].split("(")[0]
if sym in defines:
del defines[sym]
return "".join(defines.values()) + "".join(source_lines)
def main():
parser = argparse.ArgumentParser(
description="""Create a context file which can be used for m2c / decomp.me"""
)
parser.add_argument(
"c_file",
help="""File from which to create context""",
)
args = parser.parse_args()
output = import_c_file(args.c_file)
with open(os.path.join(root_dir, "ctx.c"), "w", encoding="UTF-8") as f:
f.write(output)
if __name__ == "__main__":
main()
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