jodd-core/src/main/java/jodd/io/StreamUtil.java
public static <T extends OutputStream> T copy(final Reader input, final T output, final String encoding, final int count) throws IOException {
		try (Writer out = outputStreamWriterOf(output, encoding)) {
			copy(input, out, count);
			return output;
		}
	}
public static <T extends OutputStream> T copy(final Reader input, final T output, final String encoding, final int count) throws IOException {
		try (Writer out = outputStreamWriterOf(output, encoding)) {
			copy(input, out, count);
			return output;
		}
	}
Copies {@link Reader} to {@link OutputStream} using buffer and specified encoding.

@see #copy(Reader, Writer, int)