New function rand()

ScriptFunctions/RegisterScriptFunctions.cpp

@@ -17,10 +17,11 @@ void registerScriptFunctions()
 	Script::registerUniversalFunction("now", &ScriptFunctions::now);
     Script::registerUniversalFunction("subwintype", &ScriptFunctions::subwintype);
     Script::registerUniversalFunction("subwinname", &ScriptFunctions::subwinname);
+    Script::registerUniversalFunction("rand", &ScriptFunctions::rand);
 
-	/*
-	 * IRC utilities
-	*/
+    /*
+     * IRC utilities
+    */
 	Script::registerUniversalFunction("userhost", &ScriptFunctions::userhost);
 	Script::registerUniversalFunction("isupport", &ScriptFunctions::isupport);
 }

ScriptFunctions/ScriptGeneralUtils.cpp

@@ -10,6 +10,7 @@
 #include <QInputDialog>
 #include <QMessageBox>
 #include <QDateTime>
+#include <random>
 
 using namespace Builtin::Error;
 
@@ -208,4 +209,26 @@ ValueHolder subwinname(Script&, std::vector<ValueHolder>& args)
     return cwin->getButtonText().toStdString();
 }
 
+ValueHolder rand(Script& std, std::vector <ValueHolder>& args)
+{
+    if (args.size() != 2)
+        throwInsufficientParameters("rand", args.size(), 4);
+
+    if (args[0].getType() != ValueHolder::Type::Integer)
+        throwNotANumber("rand", 1);
+
+    if (args[1].getType() != ValueHolder::Type::Integer)
+        throwNotANumber("rand", 2);
+
+    int lo = ValueExtract(args[0]).toInt();
+    int hi = ValueExtract(args[1]).toInt();
+
+    static std::random_device device;
+    static std::mt19937 generator(device());
+
+    std::uniform_int_distribution<int> distribution(lo, hi);
+
+    return ValueHolder(distribution(generator));
+}
+
 }

ScriptFunctions/ScriptGeneralUtils.h

@@ -15,6 +15,7 @@ ValueHolder unixnow(Script& , std::vector<ValueHolder>& args);
 ValueHolder now(Script& , std::vector<ValueHolder>& args);
 ValueHolder subwintype(Script&, std::vector<ValueHolder>& args);
 ValueHolder subwinname(Script&, std::vector<ValueHolder>& args);
+ValueHolder rand(Script&, std::vector<ValueHolder>& args);
 }
 
 #endif // SCRIPTGENERALUTILS_H