working ByteArray64Reader (UTF-8 compliant with proper surrogate pairing)

src/net/torvald/terrarum/modulebasegame/console/ReaderTest.kt

@@ -0,0 +1,33 @@
+package net.torvald.terrarum.modulebasegame.console
+
+import net.torvald.terrarum.console.ConsoleCommand
+import net.torvald.terrarum.console.Echo
+import net.torvald.terrarum.serialise.ByteArray64Reader
+import net.torvald.terrarum.serialise.ByteArray64Writer
+import java.io.File
+
+/**
+ * Created by minjaesong on 2021-08-31.
+ */
+object ReaderTest : ConsoleCommand {
+    override fun execute(args: Array<String>) {
+        val textfile = File("./work_files/utftest.txt")
+        val text = textfile.readText()
+
+        val writer = ByteArray64Writer(Charsets.UTF_8)
+        writer.write(text); writer.flush(); writer.close()
+
+        val ba = writer.toByteArray64()
+
+        val reader = ByteArray64Reader(ba, Charsets.UTF_8)
+        val readText = reader.readText(); reader.close()
+
+        println(readText)
+        val outfile = File("./work_files/utftest-roundtrip.txt")
+        outfile.writeText(readText, Charsets.UTF_8)
+    }
+
+    override fun printUsage() {
+        Echo("Usage: readertest")
+    }
+}