--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/3rdparty/vmime/tests/utility/encoder/encoderTestUtils.hpp	Tue Aug 17 11:19:54 2021 +0200
@@ -0,0 +1,71 @@
+//
+// 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.
+//
+
+
+// Helper function to obtain an encoder given its name
+static vmime::shared_ptr <vmime::utility::encoder::encoder> getEncoder(const vmime::string& name,
+	 int maxLineLength = 0, const vmime::propertySet props = vmime::propertySet())
+{
+	vmime::shared_ptr <vmime::utility::encoder::encoder> enc =
+		vmime::utility::encoder::encoderFactory::getInstance()->create(name);
+
+	enc->getProperties() = props;
+
+	if (maxLineLength != 0)
+		enc->getProperties()["maxlinelength"] = maxLineLength;
+
+	return enc;
+}
+
+
+// Encoding helper function
+static const vmime::string encode(const vmime::string& name, const vmime::string& in,
+	int maxLineLength = 0, const vmime::propertySet props = vmime::propertySet())
+{
+	vmime::shared_ptr <vmime::utility::encoder::encoder> enc = getEncoder(name, maxLineLength, props);
+
+	vmime::utility::inputStreamStringAdapter vin(in);
+
+	std::ostringstream out;
+	vmime::utility::outputStreamAdapter vout(out);
+
+	enc->encode(vin, vout);
+
+	return (out.str());
+}
+
+
+// Decoding helper function
+static const vmime::string decode(const vmime::string& name, const vmime::string& in, int maxLineLength = 0)
+{
+	vmime::shared_ptr <vmime::utility::encoder::encoder> enc = getEncoder(name, maxLineLength);
+
+	vmime::utility::inputStreamStringAdapter vin(in);
+
+	std::ostringstream out;
+	vmime::utility::outputStreamAdapter vout(out);
+
+	enc->decode(vin, vout);
+
+	return (out.str());
+}