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Testing if a folder already exist

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LGP123
Posts: 60
Joined: November 5th, 2016, 12:15 pm

Testing if a folder already exist

Post by LGP123 »

Hi there,
I was just wandering if there was a way to test if a folder with a specific name already exist (in a folder like #@#).
It could be using any sort of meter, built-in plugin or lua i don't really mind.
Well actually it could as well use external proggramms (i would prefer to not) or other rainmeter plugin.
So the way i would like to use this is that would like to be able to create a folder with a skin and to see if i can create it.
If a folder with the same name already exists, it would return a certain value so i can use a "if" to say that you can't use this name because a folder is already using it.
If you guys didn't understand something tell me so, i'll try reexplain this. :)

Edit : Well after some research I found that I can test if a folder exist with a batch file but, to use this with rainmeter (and for what i wan't it to do) i would have to rewrite the batch file and then use a bang using the rainmeter.exe.
Or maybe there is a way to call a batch file with a Variable (so i won't have to rewrite the file anymore) ?
User avatar
balala
Rainmeter Sage
Posts: 14461
Joined: October 11th, 2010, 6:27 pm
Location: Gheorgheni, Romania

Re: Testing if a folder already exist

Post by balala »

It seems the following approach works for me:
  • First create a MyLua.lua file, in the #@# folder of your config. Add the following content to it:

    Code: Select all

    function FolderExists(strFolderName)
    	local fileHandle, strError = io.open(strFolderName.."\\*.*","r")
    	if fileHandle ~= nil then
    		io.close(fileHandle)
    		return true
    	else
    		if string.match(strError,"No such file or directory") then
    			return false
    		else
    			return true
    		end
    	end
    end
    
    function Update()
    	local Folder = SKIN:GetVariable('Folder')
    	if FolderExists(Folder) then	
    		SKIN:Bang('!SetVariable', 'Exist', "exists")
    	else
    		SKIN:Bang('!SetVariable', 'Exist', "doesn't exist")
    	end
    end
  • This file will be used by the following skin:

    Code: Select all

    [Rainmeter]
    Update=1000
    DynamicWindowSize=1
    
    [Variables]
    Folder=ADD-HERE-THE-PATH-OF-YOUR-FOLDER
    [MeasureLuaScript]
    Measure=Script
    ScriptFile=#@#MyLua.lua
    
    [MeterResult]
    MeasureName=MeasureRun
    Meter=STRING
    X=0
    Y=0
    Padding=15,5,15,5
    FontColor=220,220,220
    SolidColor=0,0,0,150
    FontSize=12
    FontFace=Segoe UI
    StringStyle=BOLD
    StringAlign=LEFT
    AntiAlias=1
    Text=Folder #Folder# #Exist#
    DynamicVariables=1
Obviously, the skin shows up the real situation. Does this also works for you?