Removed and fixes some dependencies

scripts/lua/modules/gui_utils.lua

@@ -0,0 +1,36 @@
+--
+-- (C) 2014-24 - ntop.org
+--
+--
+
+-- IMPORTANT: keep this file without require, otherwise it might cause circular dependencies
+-- ##############################################
+
+function noHtml(s)
+   if s == nil then
+       return nil
+   end
+
+   local gsub, char = string.gsub, string.char
+   local entityMap = {
+       lt = "<",
+       gt = ">",
+       amp = "&",
+       quot = '"',
+       apos = "'"
+   }
+   local entitySwap = function(orig, n, s)
+       return (n == '' and entityMap[s]) or (n == "#" and tonumber(s)) and string.char(s) or
+                  (n == "#x" and tonumber(s, 16)) and string.char(tonumber(s, 16)) or orig
+   end
+
+   local function unescape(str)
+       return (gsub(str, '(&(#?x?)([%d%a]+);)', entitySwap))
+   end
+
+   local cleaned = s:gsub("<[aA] .->(.-)</[aA]>", "%1"):gsub("<abbr .->(.-)</abbr>", "%1"):gsub("<span .->(.-)</span>",
+       "%1"):gsub("<button .->(.-)</button>", "%1"):gsub("%s*<[iI].->(.-)</[iI]>", "%1"):gsub("<.->(.-)</.->", "%1") -- note: keep as last as this does not handle nested tags
+   :gsub("^%s*(.-)%s*$", "%1"):gsub('&nbsp;', " ")
+
+   return unescape(cleaned)
+end