LÖVE

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 _G.customFilesystem = {}

function customFilesystem.isDirectory( sPath )
	assert( type( sPath ) == "string", "String expected, got " .. type( sPath ), 2 )
	
	local response = os.execute( "cd " .. sPath )
	if response == 1 then
		return false
	end
	return true
end

function customFilesystem.isFile( sPath )
	assert( type( sPath ) == "string", "String expected, got " .. type( sPath ), 2 )

	local file = io.open( sPath, "r" )
	if not file then
		return false
	end
	return true
end

function customFilesystem.exists( sPath )
	assert( type( sPath ) == "string", "String expected, got " .. type( sPath ), 2 )

	if customFilesystem.isFile( sPath ) or customFilesystem.isDirectory( sPath ) then
		return true
	end
	return false
end

function customFilesystem.enumerate( sDirectory )
	assert( type( sDirectory ) == "string", "String expected, got " .. type( sDirectory ), 2 )

	local t = {}
    for filename in io.popen('dir "'..directory..'" /b'):lines() do
        table.insert( t, filename )
    end
    return t
end

function customFilesystem.mkdir( sPath )
	assert( customFilesystem.exists( sPath ), "Filepath already exists.", 2 )

	local response = os.execute( "mkdir " .. sPath )
	if response == 1 then
		return false
	end
	return true
end

function customFilesystem.lines( sPath )
	assert( type( sPath ) == "string", "String expected, got " .. type( sPath ), 2 )

	if not customFilesystem.isFile( sPath ) then
		error( "File does not exist.", 2 )
	end

	local lines = {}
	for line in io.lines( sPath ) do
		table.insert( lines, line )
	end

	local i = 0
	return function()
		i = i + 1
		return lines[ i ]
	end
end

function customFilesystem.remove( sPath )
	assert( type( sPath ) == "string", "String expected, got " .. type( sPath ), 2 )

	if not customFilesystem.exists( sPath ) then
		error( "File does not exist!", 2 )
	end

	local command = "rm"
	if customFilesystem.isDirectory( sPath ) then
		command = command .. "dir"
	end

	local response = os.execute( command .. " " .. sPath )
	if response == 1 then
		return false
	end
	return true
end