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/org/osgi/service/threadio/ThreadIO.java b/gogo/src/org/osgi/service/threadio/ThreadIO.java
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+/*
+ * 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 org.osgi.service.threadio;
+
+import java.io.*;
+
+/**
+ * Enable multiplexing of the standard IO streams for input, output, and error.
+ *
+ * This service guards the central resource of IO streams. The standard streams
+ * are singletons. This service replaces the singletons with special versions that
+ * can find a unique stream for each thread. If no stream is associated with a
+ * thread, it will use the standard input/output that was originally set.
+ *
+ * @author aqute
+ *
+ */
+public interface ThreadIO {
+ /**
+ * Associate this streams with the current thread.
+ *
+ * Ensure that when output is performed on System.in, System.out, System.err it
+ * will happen on the given streams.
+ *
+ * The streams will automatically be canceled when the bundle that has gotten
+ * this service is stopped or returns this service.
+ *
+ * @param in InputStream to use for the current thread when System.in is used
+ * @param out PrintStream to use for the current thread when System.out is used
+ * @param err PrintStream to use for the current thread when System.err is used
+ */
+ void setStreams(InputStream in, PrintStream out, PrintStream err);
+
+ /**
+ * Cancel the streams associated with the current thread.
+ *
+ * This method will not do anything when no streams are associated.
+ */
+ void close();
+}