Initial commit of OSGi Shell contribution. (FELIX-946)
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@783826 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/gogo/src/aQute/threadio/ThreadIOImpl.java b/gogo/src/aQute/threadio/ThreadIOImpl.java
new file mode 100644
index 0000000..314671a
--- /dev/null
+++ b/gogo/src/aQute/threadio/ThreadIOImpl.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package aQute.threadio;
+
+import java.io.*;
+
+import org.osgi.service.component.*;
+import org.osgi.service.threadio.*;
+
+public class ThreadIOImpl implements ThreadIO {
+ ThreadPrintStream err = new ThreadPrintStream(System.err);
+ ThreadPrintStream out = new ThreadPrintStream(System.out);
+ ThreadInputStream in = new ThreadInputStream(System.in);
+ ThreadLocal<Marker> current = new ThreadLocal<Marker>();
+
+ protected void activate(ComponentContext context) {
+ start();
+ }
+
+ protected void deactivate() {
+ stop();
+ }
+
+ public void stop() {
+ System.setErr(err.dflt);
+ System.setOut(out.dflt);
+ System.setIn(in.dflt);
+ }
+
+ public void start() {
+ if ( System.out instanceof ThreadPrintStream )
+ throw new IllegalStateException("Thread Print Stream already set");
+ System.setOut(out);
+ System.setIn(in);
+ System.setErr(err);
+ }
+
+ public void close() {
+ Marker top = this.current.get();
+ if ( top == null )
+ throw new IllegalStateException("No thread io active");
+
+ Marker previous = top.previous;
+ if (previous==null) {
+ in.end();
+ out.end();
+ err.end();
+ } else {
+ this.current.set(previous);
+ previous.activate();
+ }
+ }
+
+ public void setStreams(InputStream in, PrintStream out, PrintStream err) {
+ assert in != null;
+ assert out != null;
+ assert err != null;
+ Marker marker = new Marker(this,in,out,err, current.get());
+ this.current.set(marker);
+ marker.activate();
+ }
+}