--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/src/vmime/charsetConverter_idna.hpp	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,70 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002-2013 Vincent Richard <vincent@vmime.org>
+//
+// 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; either version 3 of
+// the License, or (at your option) any later version.
+//
+// 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.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#ifndef VMIME_CHARSETCONVERTER_IDNA_HPP_INCLUDED
+#define VMIME_CHARSETCONVERTER_IDNA_HPP_INCLUDED
+
+
+#include "vmime/charsetConverter.hpp"
+
+
+namespace vmime
+{
+
+
+/** A charset converter which can convert to and from Punycode (for IDNA).
+  */
+
+class charsetConverter_idna : public charsetConverter
+{
+public:
+
+	/** Construct and initialize an IDNA charset converter.
+	  *
+	  * @param source input charset
+	  * @param dest output charset
+	  * @param opts conversion options
+	  */
+	charsetConverter_idna(const charset& source, const charset& dest,
+		const charsetConverterOptions& opts = charsetConverterOptions());
+
+	~charsetConverter_idna();
+
+	void convert(const string& in, string& out);
+	void convert(utility::inputStream& in, utility::outputStream& out);
+
+	shared_ptr <utility::charsetFilteredOutputStream> getFilteredOutputStream(utility::outputStream& os);
+
+private:
+
+	charset m_source;
+	charset m_dest;
+
+	charsetConverterOptions m_options;
+};
+
+
+} // vmime
+
+
+#endif // VMIME_CHARSETCONVERTER_IDNA_HPP_INCLUDED