1 files changed, 57 insertions, 0 deletions
diff --git a/client/client_metadata.h b/client/client_metadata.h
new file mode 100644
index 00000000..49921f01
--- /dev/null
+++ b/client/client_metadata.h
@@ -0,0 +1,57 @@
+#ifndef SQL_CLIENT_METADATA_INCLUDED
+#define SQL_CLIENT_METADATA_INCLUDED
+/*
+   Copyright (c) 2020, MariaDB Corporation.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+#include "sql_string.h"
+
+
+/*
+  Print MYSQL_FIELD metadata in human readable format
+*/
+class Client_field_metadata
+{
+  const MYSQL_FIELD *m_field;
+public:
+  Client_field_metadata(MYSQL_FIELD *field)
+   :m_field(field)
+  { }
+  void print_attr(Binary_string *to,
+                  const LEX_CSTRING &name,
+                  mariadb_field_attr_t attr,
+                  uint orig_to_length) const
+  {
+    MARIADB_CONST_STRING tmp;
+    if (!mariadb_field_attr(&tmp, m_field, attr) && tmp.length)
+    {
+      if (to->length() != orig_to_length)
+        to->append(" ", 1);
+      to->append(name);
+      to->append(tmp.str, tmp.length);
+    }
+  }
+  void print_data_type_related_attributes(Binary_string *to) const
+  {
+    static const LEX_CSTRING type= {C_STRING_WITH_LEN("type=")};
+    static const LEX_CSTRING format= {C_STRING_WITH_LEN("format=")};
+    uint to_length_orig= to->length();
+    print_attr(to, type, MARIADB_FIELD_ATTR_DATA_TYPE_NAME, to_length_orig);
+    print_attr(to, format, MARIADB_FIELD_ATTR_FORMAT_NAME, to_length_orig);
+  }
+};
+
+
+#endif // SQL_CLIENT_METADATA_INCLUDED