1 files changed, 41 insertions, 0 deletions
diff --git a/src/arrow/c_glib/arrow-glib/internal-hash-table.hpp b/src/arrow/c_glib/arrow-glib/internal-hash-table.hpp
new file mode 100644
index 000000000..3def4606c
--- /dev/null
+++ b/src/arrow/c_glib/arrow-glib/internal-hash-table.hpp
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#pragma once
+
+#include <glib.h>
+
+#include <arrow/api.h>
+
+static inline std::shared_ptr<arrow::KeyValueMetadata>
+garrow_internal_hash_table_to_metadata(GHashTable *metadata)
+{
+  auto arrow_metadata = std::make_shared<arrow::KeyValueMetadata>();
+  g_hash_table_foreach(metadata,
+                       [](gpointer key,
+                          gpointer value,
+                          gpointer user_data) {
+                         auto arrow_metadata =
+                           static_cast<std::shared_ptr<arrow::KeyValueMetadata> *>(user_data);
+                         (*arrow_metadata)->Append(static_cast<gchar *>(key),
+                                                   static_cast<gchar *>(value));
+                       },
+                       &arrow_metadata);
+  return arrow_metadata;
+}