加固前 R8 Keep 规则收敛：分离反射、序列化与可重命名代码的工程方法

#!/usr/bin/env python3
import sys
import re

# 定义过度保留的正则模式及其描述
PATTERNS = [
    (r'-keep\s+class\s+(\*|\S+\.\*\*)\s*\{.*\*.*\}', "整个包或全局类保留且成员通配"),
    (r'-keep\s+class\s+\S+\s*\{(?!.*native).*\*\s+.*\}', "普通类所有成员保留且不含 native 范围"),
    (r'-keepclassmembers\s+class\s+\*\s*\{.*\}', "全局成员保留规则"),
    (r'-keepattributes\s+\*', "保留所有属性，可能导致信息泄露")
]

def check_file(file_path):
    """检查指定的 ProGuard/R8 规则文件是否存在过度保留的规则。"""
    try:
        with open(file_path, 'r', encoding='utf-8') as f:
            lines = f.readlines()
    except FileNotFoundError:
        print(f"错误：文件未找到 - {file_path}", file=sys.stderr)
        sys.exit(2)
    except PermissionError:
        print(f"错误：无权限读取文件 - {file_path}", file=sys.stderr)
        sys.exit(2)

    issues_found = False
    for lineno, line in enumerate(lines, 1):
        stripped = line.strip()
        # 跳过注释和空行
        if stripped.startswith('#') or not stripped.startswith('-'):
            continue
        
        for pattern, description in PATTERNS:
            if re.search(pattern, stripped):
                print(f"警告：行 {lineno} - {description}", file=sys.stderr)
                print(f"  规则内容：{stripped}", file=sys.stderr)
                issues_found = True
                break
    
    if issues_found:
        print("\n检测到过度保留的规则，请审查并修正。", file=sys.stderr)
        sys.exit(1)
    else:
        print("检查通过：未发现明显的过度保留规则。")
        sys.exit(0)

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print("用法：python check_keep_minimal.py <proguard 文件路径>", file=sys.stderr)
        sys.exit(2)
    
    target_file = sys.argv[1]
    check_file(target_file)