# -*- coding:utf-8 -*-
 
import os,sys,re
 
def find_all_pos(filename,feature):
    """打开二进制文件，搜索指定特征的位置，并返回所有位置的列表
    """
    with open(filename, 'rb') as binFile:
        binFileStr = binFile.read()
        posArray = [m.start() for m in re.finditer(feature, binFileStr)]
        return posArray

def export_all_png(filename,posArray):
    """打开二进制文件，根据特征位置数组，导出所有的PNG文件
    """
    with open(filename, 'rb') as binFile:    
        for i in range(len(posArray)-1):
            pngLen = posArray[i+1] - posArray[i]
            # print(pngLen)
            binFile.seek(posArray[i])
            pngFileBin = binFile.read(pngLen)
            pngFile = open("res\\"+str(i)+".png", "wb")
            pngFile.write(pngFileBin)

def find_feature_pos(filename,feature):
    """打开二进制文件，搜索指定特征最早出现的位置，并返回结果
    """
    with open(filename, 'rb') as binFile:
        binFileStr = binFile.read()
        result = re.search(feature,binFileStr)
        try:
            return result.span(0)[0]
        except:
            return -1
        
def merge_new_file(filename,feature_pos):
    """打开二进制文件，提取特征之后的数据，与新的文件头合并
    """
    file_header=b"\x44\x55\x66"
    with open(filename, 'rb') as binFile:    
            binFile.seek(feature_pos)
            datFileBin = binFile.read()
            datFile = open(filename[:-4]+"_new"+filename[-4:], "wb")
            datFile.write(file_header)
            datFile.write(datFileBin)
 
def walk_files(src_filepath = ".", file_name_feature=".exe"):
    """遍历目录中的文件，提取指定特征的文件
    """
    filepath_list = []
   
    for root, dirs, files in os.walk(src_filepath):
        for file in files:
            if file.endswith(file_name_feature)==False:
                continue
            if root == '.':
                root_path = os.getcwd() + "/"
            else:
                root_path = root
            
            if (root_path != src_filepath) and (root != '.'):
                filepath = root_path + "/" + file
            else:
                filepath = root_path + file
            
            if filepath not in filepath_list:
                filepath_list.append(filepath)
                       
    return filepath_list
 
if __name__ == "__main__":
    for path in sys.argv[1:]:
        if os.path.isfile(path):
            posArray = find_all_pos(path,b"\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
            # 位置数组应该大于1
            if(len(posArray)>1):
                # print(posArray)
                if(os.path.exists("res")==False):
                    os.makedirs("res") 
                pngList=""
                for i in range(len(posArray)):
                    pngList = pngList + str(i) + ",0x%x"%posArray[i] +"\n"
                # 保存图片位置信息
                pngFileMeta = open("res\\pnglistpos.csv", "w")
                pngFileMeta.write(pngList)

                export_all_png(path,posArray)
            

python -m venv env
.\env\Scripts\activate
python utf8_to_gbk.py filepath

import os,sys

extArray=(".m",".txt")
 
def convert( filename, in_enc = "UTF-8", out_enc="GBK" ):
    try:
        print("convert " + filename)
        targetFile = open(filename,'r',encoding=in_enc)
        content = targetFile.read()
        targetFile.close()

        targetFile = open(filename,'w',encoding=out_enc)
        targetFile.write(content)
        targetFile.close()
    except:
        targetFile.close()
 
 
def explore(dir):
    for root, dirs, files in os.walk(dir):
        for file in files:
            path = os.path.join(root, file)
            if(path.endswith(extArray)):
                convert(path)
 
def main():
    for path in sys.argv[1:]:
        if os.path.isfile(path):
            convert(path)
        elif os.path.isdir(path):
            explore(path)
 
if __name__ == "__main__":
    main()

python -m venv env
.\env\Scripts\activate
python utf8_to_gbk.py filepath

local t = tree:add( proto_foo, buf() )
t:add_le( proto_foo.fields.bytes, buf(0,4) )
# 实现日期字段的显示
t:add_le( proto_foo.fields.string, buf(0,8), datetime)