Add a splitString funtion to textutils

projects/core/src/main/resources/data/computercraft/lua/rom/modules/main/cc/strings.lua

@@ -109,7 +109,39 @@ local function ensure_width(line, width)
     return line
 end
 
+--- Splits a string in a table.
+--
+-- @tparam string inputstr The string to split.
+-- @tparam string sep The separator to split the string at
+-- @tparam number split_count How many times the string should be splitted.
+-- @treturn table A table containing the splitted strings.
+-- @usage args = textutils.splitString("arg1 arg2", " ")
+-- @since edit this if it goes live (I hope it does)
+local function split(inputstr, sep, split_count)
+    expect(1, inputstr, "string")
+    expect(2, sep, "string", "nil")
+    expect(3, split_count, "number", "nil")
+    if sep == nil then
+        sep = "%s"
+    end
+    if split_count == nil then
+        split_count = -1
+    end
+    local splitted_table = {}
+    local splitted_amount = 0
+    for str in string.gmatch(inputstr, "([^" .. sep .. "]+)") do
+        if splitted_amount == split_count then
+            break
+        else
+            table.insert(splitted_table, str)
+            splitted_amount = splitted_amount + 1
+        end
+    end
+    return splitted_table
+end
+
 return {
     wrap = wrap,
     ensure_width = ensure_width,
+    split = split,
 }