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function math.clamp(min, max, v)
return math.max(max, math.min(min, v))
end
function string.split(str, delim, include_empty, max_splits, sep_is_pattern)
delim = delim or ","
max_splits = max_splits or -2
local items = {}
local pos, len = 1, #str
local plain = not sep_is_pattern
max_splits = max_splits + 1
repeat
local np, npe = string.find(str, delim, pos, plain)
np, npe = (np or (len+1)), (npe or (len+1))
if (not np) or (max_splits == 1) then
np = len + 1
npe = np
end
local s = string.sub(str, pos, np - 1)
if include_empty or (s ~= "") then
max_splits = max_splits - 1
items[#items + 1] = s
end
pos = npe + 1
until (max_splits == 0) or (pos > (len + 1))
return items
end
function table.copy(t, seen)
local n = {}
seen = seen or {}
seen[t] = n
for k, v in pairs(t) do
n[(type(k) == "table" and (seen[k] or table.copy(k, seen))) or k] =
(type(v) == "table" and (seen[v] or table.copy(v, seen))) or v
end
return n
end
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