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authorAshlee Young <ashlee@onosfw.com>2015-10-23 10:00:02 -0700
committerAshlee Young <ashlee@onosfw.com>2015-10-23 10:00:02 -0700
commit753a6c60f47f3ac4f270005b65e9d6481de8eb68 (patch)
tree3d0a1ae3b4d994550f6614b417b991eee3eb8911 /framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java
parentc62d20eb3b4620c06d833be06f50b2600d96dd42 (diff)
Adding maven and ant source trees
Change-Id: I0a39b9add833a31b9c3f98d193983ae2f3a5a445 Signed-off-by: Ashlee Young <ashlee@onosfw.com>
Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java')
-rw-r--r--framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java176
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diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java
new file mode 100644
index 00000000..6694c3f0
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/OutputStreamFunneler.java
@@ -0,0 +1,176 @@
+/*
+ * 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.apache.tools.ant.util;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Manages a set of <code>OutputStream</code>s to
+ * write to a single underlying stream, which is
+ * closed only when the last &quot;funnel&quot;
+ * has been closed.
+ */
+public class OutputStreamFunneler {
+
+ /**
+ * Default timeout.
+ * @see #setTimeout(long)
+ */
+ public static final long DEFAULT_TIMEOUT_MILLIS = 1000;
+
+ private final class Funnel extends OutputStream {
+ private boolean closed = false;
+
+ private Funnel() {
+ synchronized (OutputStreamFunneler.this) {
+ ++count;
+ }
+ }
+
+ public void flush() throws IOException {
+ synchronized (OutputStreamFunneler.this) {
+ dieIfClosed();
+ out.flush();
+ }
+ }
+
+ public void write(int b) throws IOException {
+ synchronized (OutputStreamFunneler.this) {
+ dieIfClosed();
+ out.write(b);
+ }
+ }
+
+ public void write(byte[] b) throws IOException {
+ synchronized (OutputStreamFunneler.this) {
+ dieIfClosed();
+ out.write(b);
+ }
+ }
+
+ public void write(byte[] b, int off, int len) throws IOException {
+ synchronized (OutputStreamFunneler.this) {
+ dieIfClosed();
+ out.write(b, off, len);
+ }
+ }
+
+ public void close() throws IOException {
+ release(this);
+ }
+ }
+
+ private OutputStream out;
+ private int count = 0;
+ private boolean closed;
+ private long timeoutMillis;
+
+ /**
+ * Create a new <code>OutputStreamFunneler</code> for
+ * the specified <code>OutputStream</code>.
+ * @param out <code>OutputStream</code>.
+ */
+ public OutputStreamFunneler(OutputStream out) {
+ this(out, DEFAULT_TIMEOUT_MILLIS);
+ }
+
+ /**
+ * Create a new <code>OutputStreamFunneler</code> for
+ * the specified <code>OutputStream</code>, with the
+ * specified timeout value.
+ * @param out <code>OutputStream</code>.
+ * @param timeoutMillis <code>long</code>.
+ * @see #setTimeout(long)
+ */
+ public OutputStreamFunneler(OutputStream out, long timeoutMillis) {
+ if (out == null) {
+ throw new IllegalArgumentException(
+ "OutputStreamFunneler.<init>: out == null");
+ }
+ this.out = out;
+ this.closed = false; //as far as we know
+ setTimeout(timeoutMillis);
+ }
+
+ /**
+ * Set the timeout for this <code>OutputStreamFunneler</code>.
+ * This is the maximum time that may elapse between the closure
+ * of the last &quot;funnel&quot; and the next call to
+ * <code>getOutputStream()</code> without closing the
+ * underlying stream.
+ * @param timeoutMillis <code>long</code> timeout value.
+ */
+ public synchronized void setTimeout(long timeoutMillis) {
+ this.timeoutMillis = timeoutMillis;
+ }
+
+ /**
+ * Get a &quot;funnel&quot; <code>OutputStream</code> instance to
+ * write to this <code>OutputStreamFunneler</code>'s underlying
+ * <code>OutputStream</code>.
+ * @return <code>OutputStream</code>.
+ * @throws IOException if unable to create the funnel.
+ */
+ public synchronized OutputStream getFunnelInstance()
+ throws IOException {
+ dieIfClosed();
+ try {
+ return new Funnel();
+ } finally {
+ notifyAll();
+ }
+ }
+
+ private synchronized void release(Funnel funnel) throws IOException {
+ //ignore release of an already-closed funnel
+ if (!funnel.closed) {
+ try {
+ if (timeoutMillis > 0) {
+ try {
+ wait(timeoutMillis);
+ } catch (InterruptedException eyeEx) {
+ //ignore
+ }
+ }
+ if (--count == 0) {
+ close();
+ }
+ } finally {
+ funnel.closed = true;
+ }
+ }
+ }
+
+ private synchronized void close() throws IOException {
+ try {
+ dieIfClosed();
+ out.close();
+ } finally {
+ closed = true;
+ }
+ }
+
+ private synchronized void dieIfClosed() throws IOException {
+ if (closed) {
+ throw new IOException("The funneled OutputStream has been closed.");
+ }
+ }
+
+}