add sample and alternative encoding names

Encodings/samples/CMakeLists.txt

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+add_subdirectory(TextConverter)

Encodings/samples/Makefile

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+#
+# Makefile
+#
+# Makefile for Poco Encodings Samples
+#
+
+.PHONY: projects
+clean all: projects
+projects:
+	$(MAKE) -C TextConverter $(MAKECMDGOALS)

Encodings/samples/TextConverter/CMakeLists.txt

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+set(SAMPLE_NAME "TextConverter")
+
+set(LOCAL_SRCS "")
+aux_source_directory(src LOCAL_SRCS)
+
+add_executable( ${SAMPLE_NAME} ${LOCAL_SRCS} )
+target_link_libraries( ${SAMPLE_NAME} PocoEncodings PocoFoundation )

Encodings/samples/TextConverter/Makefile

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+#
+# Makefile
+#
+# Makefile for Poco TextConverter
+#
+
+include $(POCO_BASE)/build/rules/global
+
+objects = TextConverter
+
+target         = TextConverter
+target_version = 1
+target_libs    = PocoEncodings PocoFoundation
+
+include $(POCO_BASE)/build/rules/exec

Encodings/samples/TextConverter/src/TextConverter.cpp

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+//
+// TextConverter.cpp
+//
+// This sample demonstrates the text encodings support in POCO.
+//
+// Copyright (c) 2018, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/StreamConverter.h"
+#include "Poco/StreamCopier.h"
+#include "Poco/TextEncoding.h"
+#include "Poco/Encodings.h"
+#include <iostream>
+
+
+inline int usage()
+{
+	std::cout << "Usage: TextConverter <inEncoding> <outEncoding>" << std::endl;
+	return 1;
+}
+
+
+int main(int argc, char** argv)
+{
+	if (argc < 3) return usage();
+
+	try
+	{
+		Poco::registerExtraEncodings(); // register encodings from the PocoEncodings library
+
+		std::string inEncodingName(argv[1]);
+		std::string outEncodingName(argv[2]);
+
+		Poco::TextEncoding& inEncoding = Poco::TextEncoding::byName(inEncodingName);
+		Poco::TextEncoding& outEncoding = Poco::TextEncoding::byName(outEncodingName);
+
+		Poco::OutputStreamConverter conv(std::cout, inEncoding, outEncoding);
+		Poco::StreamCopier::copyStream(std::cin, conv);
+	}
+	catch (Poco::Exception& exc)
+	{
+		std::cerr << exc.displayText() << std::endl;
+		return 2;
+	}
+
+	return 0;
+}