Module:HF

local HF = {}

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

function HF.trim(s) if type(s) == "string" then return (s:gsub("^%s*(.-)%s*$", "%1")) else return false end end

function HF.isempty(s) local result = false if type(s) == "nil" then result = true elseif type(s) == "string" then if s == "" then result = true end elseif type(s) == "table" then if next(s) == nil then result = true end end return result end

function HF.print_r( t, name, indent ) local cart    -- a container local autoref -- for self references -- counts the number of elements in a table local function tablecount(t)     local n = 0     for _, _ in pairs(t) do n = n+1 end     return n  end -- (RiciLake) returns true if the table is empty local function isemptytable(t) return next(t) == nil end local function basicSerialize (o) local so = tostring(o) if type(o) == "function" then local info = debug.getinfo(o, "S") -- info.name is nil because o is not a calling level if info.what == "C" then return string.format("%q", so .. ", C function") else -- the information is defined through lines return string.format("%q", so .. ", defined in (" .. info.linedefined .. "-" .. info.lastlinedefined .. ")" .. info.source) end elseif type(o) == "number" or type(o) == "boolean" then return so    else return string.format("%q", so) end end local function addtocart (value, name, indent, saved, field) indent = indent or "" saved = saved or {} field = field or name cart = cart .. indent .. field if type(value) ~= "table" then cart = cart .. " = " .. basicSerialize(value) .. ";\n" else if saved[value] then cart = cart .. " = {}; -- " .. saved[value] .. " (self reference)\n" autoref = autoref .. name .. " = " .. saved[value] .. ";\n" else saved[value] = name --if tablecount(value) == 0 then if isemptytable(value) then cart = cart .. " = {};\n" else cart = cart .. " = {\n" for k, v in pairs(value) do                k = basicSerialize(k) local fname = string.format("%s[%s]", name, k)                field = string.format("[%s]", k)                 -- three spaces between levels addtocart(v, fname, indent .. "  ", saved, field) end cart = cart .. indent .. "};\n" end end end end name = name or "__unnamed__" if type(t) ~= "table" then return name .. " = " .. basicSerialize(t) end cart, autoref = "", "" addtocart(t, name, indent) return cart .. autoref end

function HF.firstToUpper( str ) return (str:gsub("^%l", string.upper)) end

function HF.round(num, idp) local mult = 10^(idp or 0) return math.floor(num * mult + 0.5) / mult end

return HF