Initial commit

diff --git a/init.lua b/init.lua
new file mode 100644 (file)
index 0000000..38b4b23
--- /dev/null
+++ b/init.lua
@@ -0,0 +1,38 @@
+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