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#!/usr/bin/env python3
import argparse
import os
import sys
import subprocess
import tempfile
from pathlib import Path
script_dir = Path(os.path.dirname(os.path.realpath(__file__)))
root_dir = script_dir / ".."
src_dir = root_dir / "src"
# Project-specific
CPP_FLAGS = [
"-Iinclude",
"-Iinclude/libc",
"-Isrc",
"-Ibuild/n64-us",
"-I.",
"-Iextracted/n64-us",
"-DF3DEX_GBI_2",
"-DF3DEX_GBI_PL",
"-DGBI_DOWHILE",
"-D__sgi",
"-D_LANGUAGE_C",
"-DNON_MATCHING",
"-D_Static_assert(x, y)=",
"-D__attribute__(x)=",
"-D_MIPS_SZLONG=32",
"-ffreestanding",
"-DM2CTX",
"-std=gnu89",
]
# Read through the processes context and replace whatever
def custom_replacements(output):
actorList = []
output = output.splitlines()
i = 0
while i < len(output):
line = output[i]
############### actorLists[2].first -> Player* ###############
if "typedef struct ActorListEntry " in line:
actorListText = ""
i += 1
while not output[i].startswith("}"):
actorListText += output[i]
i += 1
actorCats = [
"actorSwitch",
"bg",
"player",
"explosive",
"npc",
"enemy",
"prop",
"itemAction",
"misc",
"boss",
"door",
"chest",
]
for x in range(12):
actorList.append(actorListText.replace("first;", f"{actorCats[x]};") + "\n")
if x == 2:
actorList[x] = actorList[x].replace("Actor*", "struct Player*")
elif "ActorListEntry actorLists[ACTORCAT_MAX];" in line:
output[i] = "struct {\n" + "".join(actorList) + "};"
########################################################
i += 1
return "\n".join(output)
def import_c_file(in_file) -> str:
in_file = os.path.relpath(in_file, root_dir)
cpp_command = ["gcc", "-E", "-P", "-undef", "-dM", *CPP_FLAGS, in_file]
cpp_command2 = ["gcc", "-E", "-P", "-undef", *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")
out_text = ""
try:
out_text += subprocess.check_output(cpp_command, cwd=root_dir, encoding="utf-8")
out_text += subprocess.check_output(cpp_command2, 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)
for line in stock_macros.strip().splitlines():
out_text = out_text.replace(line + "\n", "")
return out_text
def main():
parser = argparse.ArgumentParser(usage="./m2ctx.py path/to/file.c or ./m2ctx.py (from an actor or gamestate's asm dir)",
description="Creates a ctx.c file for m2c or decomp.me. "
"Output will be saved as ctx.c")
parser.add_argument('filepath', help="path of c file to be processed")
parser.add_argument("--custom", "-c", dest="custom", action="store_true", default=False,
help="Apply custom replacements to the output to help aid m2c output")
args = parser.parse_args()
c_file_path = args.filepath
print("Using file: {}".format(c_file_path))
output = import_c_file(c_file_path)
if args.custom:
output = custom_replacements(output)
ctxPath = root_dir / "ctx.c"
with ctxPath.open("w", encoding="UTF-8") as f:
f.write(output)
if __name__ == "__main__":
main()
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