Strip PublicizedFrom attributes from lambdas

"""
Python script to clear all the PublicizedFrom attributes from lambdas
in its parent directory.

Put it in Assets/Scripts/Assembly-CSharp as strip_lambda_attributes.py,
open the folder in terminal, and run:
python strip_lambda_attributes.py
"""

import os
import re

# Regex to match `[PublicizedFrom(...)]` before a lambda parameter
lambda_attr_regex = re.compile(
    r"""\[\s*PublicizedFrom\s*\([^)]*\)\s*\]\s*(?=\()""",
    re.MULTILINE
)

def process_file(filepath):
    with open(filepath, "r", encoding="utf-8") as f:
        content = f.read()

    new_content, count = lambda_attr_regex.subn('', content)

    if count > 0:
        with open(filepath, "w", encoding="utf-8") as f:
            f.write(new_content)
        print(f"✅ Fixed {count} lambda(s) in {filepath}")

def walk_and_process(directory):
    for root, _, files in os.walk(directory):
        for name in files:
            if name.endswith(".cs"):
                process_file(os.path.join(root, name))

if __name__ == "__main__":
    project_dir = os.getcwd()  # Run the script from the Unity project root
    print(f"🔍 Scanning project: {project_dir}")
    walk_and_process(project_dir)
    print("🎉 Done! All `[PublicizedFrom(...)]` lambdas cleaned.")