Files
tustu/scripts/fix_constructors.py
2026-01-11 21:53:08 +00:00

105 lines
3.9 KiB
Python
Executable File

#!/usr/bin/env python3
"""
Fix obfuscated constructor names in Java files.
Finds patterns like: ` aI(ClassName param) {}`
and replaces them with proper constructor names matching the class name.
"""
import re
import sys
from pathlib import Path
def fix_constructors_in_file(file_path):
"""Fix constructor names in a single Java file."""
try:
with open(file_path, 'r', encoding='utf-8') as f:
content = f.read()
original_content = content
# Find the class name from the file
# Match: class ClassName ... or public class ClassName ...
class_match = re.search(r'\b(?:public\s+|private\s+|protected\s+)?class\s+(\w+)', content)
if not class_match:
return False, "No class definition found"
class_name = class_match.group(1)
# Find obfuscated constructors - patterns like:
# aI(ClassName param) {}
# a(Type param) {
# These are lines starting with 2 spaces, followed by a lowercase identifier (not a keyword),
# followed by parentheses (constructor-like), but the identifier doesn't match class name
# Pattern to match potential obfuscated constructors
# Look for: start of line, optional access modifier, short identifier (1-3 chars starting with lowercase),
# followed by parameter list
# Updated to catch patterns like aD, aI, az, etc. (1-2 chars, starting lowercase)
pattern = r'^(\s+)([a-z][A-Za-z]?)\(([^)]*)\)\s*\{'
changes_made = 0
lines = content.split('\n')
new_lines = []
for i, line in enumerate(lines):
match = re.match(pattern, line)
if match:
indent = match.group(1)
potential_constructor = match.group(2)
params = match.group(3)
# Check if this looks like an obfuscated constructor
# (short name, not matching class name, has parameters that might include class types)
if potential_constructor != class_name and len(potential_constructor) <= 2:
# Check if parameters contain a class type (capitalized word)
# or if there are no parameters (default constructor)
if not params.strip() or re.search(r'\b[A-Z]\w+', params):
# This looks like an obfuscated constructor
new_line = line.replace(f'{indent}{potential_constructor}(',
f'{indent}{class_name}(')
new_lines.append(new_line)
changes_made += 1
continue
new_lines.append(line)
if changes_made > 0:
new_content = '\n'.join(new_lines)
with open(file_path, 'w', encoding='utf-8') as f:
f.write(new_content)
return True, f"Fixed {changes_made} constructor(s)"
return False, "No changes needed"
except Exception as e:
return False, f"Error: {str(e)}"
def main():
if len(sys.argv) < 2:
print("Usage: python fix_constructors.py <file_or_directory>")
sys.exit(1)
path = Path(sys.argv[1])
if path.is_file():
files = [path]
elif path.is_dir():
files = list(path.rglob("*.java"))
else:
print(f"Error: {path} is not a valid file or directory")
sys.exit(1)
total_fixed = 0
total_files = len(files)
for java_file in files:
changed, message = fix_constructors_in_file(java_file)
if changed:
print(f"{java_file.relative_to(path.parent if path.is_file() else path)}: {message}")
total_fixed += 1
print(f"\nFixed {total_fixed} out of {total_files} files")
if __name__ == "__main__":
main()