libs/web: add "neg()" cbi datatype to negate arbritary types, e.g. "neg(hostname...

diff --git a/libs/web/htdocs/luci-static/resources/cbi.js b/libs/web/htdocs/luci-static/resources/cbi.js
index 1cd49bc..1e751d4 100644 (file)
--- a/libs/web/htdocs/luci-static/resources/cbi.js
+++ b/libs/web/htdocs/luci-static/resources/cbi.js
@@ -219,6 +219,14 @@ var cbi_validators = {
                        return (val <= max);
 
                return false;
+       },
+
+       'neg': function(v, args)
+       {
+               if (args[0] && typeof cbi_validators[args[0]] == "function")
+                       return cbi_validators[args[0]](v.replace(/^\s*!\s*/, ''));
+
+               return false;
        }
 };
 

diff --git a/libs/web/luasrc/cbi/datatypes.lua b/libs/web/luasrc/cbi/datatypes.lua
index 6640db6..fc3048e 100644 (file)
--- a/libs/web/luasrc/cbi/datatypes.lua
+++ b/libs/web/luasrc/cbi/datatypes.lua
@@ -267,3 +267,11 @@ function max(val, max)
 
        return false
 end
+
+function neg(val, what)
+       if what and type(_M[what]) == "function" then
+               return _M[what](val:gsub("^%s*!%s*", ""))
+       end
+
+       return false
+end