prime/tools/decompctx.py

92 lines
2.6 KiB
Python

#!/usr/bin/env python3
###
# Generates a ctx.c file, usable for "Context" on https://decomp.me.
#
# Usage:
# python3 tools/decompctx.py src/file.cpp
#
# If changes are made, please submit a PR to
# https://github.com/encounter/dtk-template
###
import argparse
import os
import re
script_dir = os.path.dirname(os.path.realpath(__file__))
root_dir = os.path.abspath(os.path.join(script_dir, ".."))
src_dir = os.path.join(root_dir, "src")
include_dirs = [
os.path.join(root_dir, "include"),
os.path.join(root_dir, "libc"),
]
include_pattern = re.compile(r'^#include\s*[<"](.+?)[>"]$')
guard_pattern = re.compile(r'^#ifndef\s+(.*)$')
defines = set()
def import_h_file(in_file: str, r_path: str) -> str:
rel_path = os.path.join(root_dir, r_path, in_file)
if os.path.exists(rel_path):
return import_c_file(rel_path)
for include_dir in include_dirs:
inc_path = os.path.join(include_dir, in_file)
if os.path.exists(inc_path):
return import_c_file(inc_path)
else:
print("Failed to locate", in_file)
return ""
def import_c_file(in_file) -> str:
in_file = os.path.relpath(in_file, root_dir)
out_text = ''
try:
with open(in_file, encoding="utf-8") as file:
out_text += process_file(in_file, list(file))
except Exception:
with open(in_file) as file:
out_text += process_file(in_file, list(file))
return out_text
def process_file(in_file: str, lines) -> str:
out_text = ''
for idx, line in enumerate(lines):
guard_match = guard_pattern.match(line.strip())
if idx == 0:
if guard_match:
if guard_match[1] in defines:
break
defines.add(guard_match[1])
print("Processing file", in_file)
include_match = include_pattern.match(line.strip())
if include_match and not include_match[1].endswith(".s"):
out_text += f"/* \"{in_file}\" line {idx} \"{include_match[1]}\" */\n"
out_text += import_h_file(include_match[1], os.path.dirname(in_file))
out_text += f"/* end \"{include_match[1]}\" */\n"
else:
out_text += line
return out_text
def main():
parser = argparse.ArgumentParser(
description="""Create a context file which can be used for 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()