1 files changed, 55 insertions, 0 deletions
diff --git a/views.hh b/views.hh
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+/*
+ * This file is part of PowerDNS or dnsdist.
+ * Copyright -- PowerDNS.COM B.V. and its contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * In addition, for the avoidance of any doubt, permission is granted to
+ * link this program with OpenSSL and to (re)distribute the binaries
+ * produced as the result of such linking.
+ *
+ * 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 02110-1301 USA.
+ */
+#pragma once
+
+#include <string_view>
+
+namespace pdns::views
+{
+
+class UnsignedCharView
+{
+public:
+  UnsignedCharView(const char* data_, size_t size_) :
+    view(data_, size_)
+  {
+  }
+  // NOLINTNEXTLINE(cppcoreguidelines-pro-type-reinterpret-cast): No unsigned char view in C++17
+  UnsignedCharView(const unsigned char* data_, size_t size_) :
+    view(reinterpret_cast<const char*>(data_), size_)
+  {
+  }
+  const unsigned char& at(std::string_view::size_type pos) const
+  {
+    return reinterpret_cast<const unsigned char&>(view.at(pos));
+  }
+
+  size_t size() const
+  {
+    return view.size();
+  }
+
+private:
+  std::string_view view;
+};
+
+}