MDEV-20453 add class similar to std::string_view (non owning string reference)bb-10.6-MDEV-20453

Also use string_view in some places.

1 files changed, 25 insertions, 0 deletions

diff --git a/sql/string_view.cc b/sql/string_view.cc
new file mode 100644
index 00000000000..6b3b101c131
--- /dev/null
+++ b/sql/string_view.cc
@@ -0,0 +1,25 @@
+/*****************************************************************************
+Copyright (c) 2021 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 Street, Fifth Floor, Boston, MA 02110-1335 USA
+*****************************************************************************/
+
+#include "string_view.h"
+
+#include <ostream>
+
+std::basic_ostream<char> &operator<<(std::basic_ostream<char> &os,
+                                     string_view v)
+{
+  // TODO standard requires a much more complicated code here.
+  auto size= static_cast<std::streamsize>(v.size());
+  os.write(v.data(), size);
+  return os;
+}