doodle3d-firmware/src/util/utils.lua

local uci = require("uci").cursor()

local M = {}

function string:split(sep)
        local sep, fields = sep or ":", {}
        local pattern = string.format("([^%s]+)", sep)
        self:gsub(pattern, function(c) fields[#fields+1] = c end)
        return fields
end

function M.toboolean(s)
	if not s then return false end
	
	local b = s:lower()
	return (b == "1" or b == "t" or b == "true") and true or false
end

function M.getUciSectionName(config, type)
	local sname = nil
	uci:foreach(config, type, function(s) sname = s[".name"] end)
	return sname
end

function M.exists(file)
	local r = io.open(file) --ignore returned message
	if r ~= nil then io.close(r) end
	return r ~= nil
end

--FIXME: somehow protect this function from running arbitrary commands
function M.symlink(from, to)
	if from == nil or from == "" or to == nil or to == "" then return -1 end
	local x = "ln -s " .. from .. " " .. to
	return os.execute(x)
end

return M