How to read binary files in Lua?

In Lua, you can open a file in binary mode using the io.open function, and then read the contents of the binary file using the file:read method.

Here is a simple example code:

-- 以二进制模式打开文件
local file = io.open("filename", "rb")

if file then
   -- 读取文件内容
   local content = file:read("*a")

   -- 输出内容
   print(content)

   -- 关闭文件
   file:close()
else
   print("文件打开失败")
end

In the example above, “filename” is the path to the binary file being read. Opening the file in “rb” mode treats the file as a binary file. The content of the entire file can be read using the file:read(“*a”) method and stored in the variable content. The content can then be processed as needed. Finally, the file can be closed using the file:close() method.