[Minor] Add some convenience methods

diff --git a/src/libutil/cxx/error.hxx b/src/libutil/cxx/error.hxx
index 91f9d0cf4c3b12055003418404405f2a2e080ef8..4689d4276a3ef4753066996d3240ae54a1ff3637 100644 (file)
--- a/src/libutil/cxx/error.hxx
+++ b/src/libutil/cxx/error.hxx
@@ -1,11 +1,11 @@
-/*-
- * Copyright 2022 Vsevolod Stakhov
+/*
+ * Copyright 2024 Vsevolod Stakhov
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- *   http://www.apache.org/licenses/LICENSE-2.0
+ *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
@@ -126,6 +126,27 @@ public:
                }
        }
 
+       /**
+        * Convert into GError
+        * @return
+        */
+       auto into_g_error(GQuark quark) const -> GError *
+       {
+               return g_error_new(quark, error_code, "%s",
+                                                  error_message.data());
+       }
+
+       /**
+        * Convenience alias for the `into_g_error`
+        * @param err
+        */
+       auto into_g_error_set(GQuark quark, GError **err) const -> void
+       {
+               if (err && *err == nullptr) {
+                       *err = into_g_error(quark);
+               }
+       }
+
 public:
        std::string_view error_message;
        int error_code;