使用Lua,检查文件是否为目录 [英] Using Lua, check if file is a directory
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问题描述
如果我有此代码
local f = io.open("../web/", "r")
print(io.type(f))
-- output: file
我怎么知道f
是否指向目录?
how can I know if f
points to a directory?
推荐答案
Lua的默认库无法确定这一点.
Lua's default libraries don't have a way to determine this.
但是,您可以使用第三方 LuaFileSystem 库来访问更高级的文件-系统交互;它也是跨平台的.
However, you could use the third-party LuaFileSystem library to gain access to more advanced file-system interactions; it's cross-platform as well.
LuaFileSystem提供lfs.attributes,可用于查询文件模式:
LuaFileSystem provides lfs.attributes which you can use to query the file mode:
require "lfs"
function is_dir(path)
-- lfs.attributes will error on a filename ending in '/'
return path:sub(-1) == "/" or lfs.attributes(path, "mode") == "directory"
end
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