file exists

GregBUG · April 2012

is there a better way for check if a file exists in lua ? :-B

--------------------------
-- check if file exists --
--------------------------
local function fileExists(fileName)
	local file = io.open(fileName)
	if file ~= nil then
		io.close(file)
	end
	return file == nil
end

thanks.

atilim · April 2012

Hi Gianluca,

I don't know a better way then yours. On the other hand LuaFileSystem plugin http://keplerproject.github.com/luafilesystem/ is on the roadmap http://bugs.giderosmobile.com/issues/58

GregBUG · May 2012

thanks @atilim!.

OZApps · May 2012

you can try using pcall, just in case lua throws an error and it breaks the app and you can also know if the function succeeded or not (which would be the same as if the file existed or not)

GregBUG · May 2012

@OZApps

thanks for the tips. i did't know the existence of the function "pcall"

thanks.
Gianluca.

chipster123 · May 2012

Me neither

OZApps · May 2012

you are welcome, Lua with just 35 OP Codes is so vast and flexible, that it is just amazing...

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