Moved some classes around.

src/main/java/net/rubygrapefruit/platform/internal/TerminfoTerminalAccess.java

@@ -0,0 +1,27 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.Terminal;
+import net.rubygrapefruit.platform.TerminalAccess;
+import net.rubygrapefruit.platform.internal.jni.PosixTerminalFunctions;
+
+public class TerminfoTerminalAccess implements TerminalAccess {
+    private static Output currentlyOpen;
+
+    @Override
+    public boolean isTerminal(Output output) {
+        return PosixTerminalFunctions.isatty(output.ordinal());
+    }
+
+    @Override
+    public Terminal getTerminal(Output output) {
+        if (currentlyOpen != null) {
+            throw new UnsupportedOperationException("Currently only one output can be used as a terminal.");
+        }
+
+        DefaultTerminal terminal = new DefaultTerminal(output);
+        terminal.init();
+
+        currentlyOpen = output;
+        return terminal;
+    }
+}