Added world creation menu

src/util/stringutil.cpp

@@ -131,4 +131,22 @@ bool util::is_integer(string text) {
             return false;
     }
     return true;
+}
+
+bool util::is_integer(wstring text) {
+    for (wchar_t c : text) {
+        if (c < L'0' || c > L'9')
+            return false;
+    }
+    return true;
+}
+
+bool util::is_valid_filename(std::wstring name) {
+    for (wchar_t c : name) {
+        if (c < 31 || c == '/' || c == '\\' || c == '<' || c == '>' ||
+            c == ':' || c == '"' || c == '|' || c == '?' || c == '*'){
+            return false;
+        }
+    }
+    return true;
 }

src/util/stringutil.h

@@ -13,6 +13,8 @@ namespace util {
     extern std::string wstr2str_utf8(const std::wstring ws);
     extern std::wstring str2wstr_utf8(const std::string s);
     extern bool is_integer(std::string text);
+    extern bool is_integer(std::wstring text);
+    extern bool is_valid_filename(std::wstring name);
 }
 
 #endif // UTIL_STRINGUTIL_H_