Added new 'type' function, other mods

luprex/cpp/util.cpp

@@ -12,6 +12,20 @@
 
 namespace util {
 
+std::string tolower(std::string input) {
+    for (int i = 0; i < int(input.size()); i++) {
+        input[i] = std::tolower(input[i]);
+    }
+    return input;
+}
+
+std::string toupper(std::string input) {
+    for (int i = 0; i < int(input.size()); i++) {
+        input[i] = std::toupper(input[i]);
+    }
+    return input;
+}
+
 int64_t strtoint(const std::string &value, int64_t errval) {
     char *endptr;
     int64_t result = strtoll(value.c_str(), &endptr, 10);