deleting all files in documents directory

Solar2D Lua Language
#21

You have a few errors in your function, and you don’t need to change directory for this to work.

Look at the following modified code:

menuFunctions.deleteVolumeContent = function( event ) if global.volumeToDelete ~= 0 then local lfs = require "lfs"; local doc\_dir = system.DocumentsDirectory; local doc\_path = system.pathForFile("volume2", doc\_dir); local resultOK, errorMsg; --remove files from directory for file in lfs.dir(doc\_path) do local theFile = doc\_path.."/"..file; if (lfs.attributes(theFile, "mode") ~= "directory") then resultOK, errorMsg = os.remove(theFile); if (resultOK) then print(file.." removed"); else print("Error removing file: "..file..":"..errorMsg); end end end -- -- remove directory -- resultOK, errorMsg = os.remove(doc\_path); -- -- if (resultOK) then -- print(doc\_path.." removed"); -- else -- print("Error removing file: "..doc\_path..":"..errorMsg); -- end else native.showAlert("Alert", "You must select a volume to delete first.", {"Okay"}) end end

This will delete the contents of your ‘volume2’ directory.

If you also want to delete ‘volume2’ after the files are removed, just un-comment the block at the end.

#22

@ingemar,

Thank you for helping me out.  The code you supplied does delete the files found directly inside “volume2”, but I actually have several more layers of folders inside of “volume2” that are not getting traversed.  How could your code traverse all folders and delete everything?  Here is a image to show the layout of the “volume2” folder and its layers of folders.

  ScreenShot2013-07-23at95758AM_zps3b8e8fe

Might need to do some kind of recursion?

#23

Yep, recursion is the key… something like this should do it.

(Be careful though, it will delete everything without asking)

local lfs = require "lfs"; --forward declaration local deleteDirectory; deleteDirectory = function(dir) local resultOK, errorMsg; --remove files from directory for file in lfs.dir(dir) do if ((file == ".") or (file == "..")) then -- skip system files -- do nothing else local theFile = dir.."/"..file; if (lfs.attributes(theFile, "mode") == "directory") then deleteDirectory(theFile); else resultOK, errorMsg = os.remove(theFile); if (not resultOK) then print("Error removing file: "..file..":"..errorMsg); end end end end -- remove directory resultOK, errorMsg = os.remove(dir); if (not resultOK) then print("Error removing directory: "..dir..":"..errorMsg); end end menuFunctions.deleteVolumeContent = function( event ) if global.volumeToDelete ~= 0 then local doc\_dir = system.DocumentsDirectory; local doc\_path = system.pathForFile("volume2", doc\_dir); deleteDirectory(doc\_path); else native.showAlert("Alert", "You must select a volume to delete first.", {"Okay"}) end end
#24

@ingemar,

That did it!  Thank you so much for taking the time to help me out.  In a crunch to get my app uploaded in the next few days and this was one of the last things to figure out. Thank you again.

#25

:slight_smile:

#26

I’m having an os.remove issue. I’m using code to erase a variety of stored player info including a snapshot they can take of themselves which should be erased with the following code:
local results3, reason = os.remove(system.pathForFile(“newImage21.jpg”, system.DocumentsDirectory))
local results4, reason = os.remove(system.pathForFile(“newImage22.jpg”, system.DocumentsDirectory))
local results5, reason = os.remove(system.pathForFile(“newImage23.jpg”, system.DocumentsDirectory))
local results6, reason = os.remove(system.pathForFile(“newImage24.jpg”, system.DocumentsDirectory))
the problem is that it’s also erasing the other four sets of images: newImage11 through 14.jpg, newImage31 through 34.jpg, etc., up to 51-54. it doesn’t matter which set of images the button in each profile tells to go away, it basically wipes out the whole she-bang. any ideas? please… thanks!!!

#27

I just changed local results3, 4, etc. to all results00’s in one profile, all 11’s, in another, etc., and there seems to no longer be an issue. whew!

#28

I was wrong…that didn’t work.

#29

I’m having an os.remove issue. I’m using code to erase a variety of stored player info including a snapshot they can take of themselves which should be erased with the following code:
local results3, reason = os.remove(system.pathForFile(“newImage21.jpg”, system.DocumentsDirectory))
local results4, reason = os.remove(system.pathForFile(“newImage22.jpg”, system.DocumentsDirectory))
local results5, reason = os.remove(system.pathForFile(“newImage23.jpg”, system.DocumentsDirectory))
local results6, reason = os.remove(system.pathForFile(“newImage24.jpg”, system.DocumentsDirectory))
the problem is that it’s also erasing the other four sets of images: newImage11 through 14.jpg, newImage31 through 34.jpg, etc., up to 51-54. it doesn’t matter which set of images the button in each profile tells to go away, it basically wipes out the whole she-bang. any ideas? please… thanks!!!

#30

I just changed local results3, 4, etc. to all results00’s in one profile, all 11’s, in another, etc., and there seems to no longer be an issue. whew!

#31

I was wrong…that didn’t work.