1 files changed, 161 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LeadPipeInputStream.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LeadPipeInputStream.java
new file mode 100644
index 00000000..00819128
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LeadPipeInputStream.java
@@ -0,0 +1,161 @@
+/*
+ *  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.PipedInputStream;
+import java.io.PipedOutputStream;
+
+import org.apache.tools.ant.Project;
+import org.apache.tools.ant.ProjectComponent;
+import org.apache.tools.ant.Task;
+
+/**
+ * Special <code>PipedInputStream</code> that will not die
+ * when the writing <code>Thread</code> is no longer alive.
+ * @since Ant 1.6.2
+ */
+public class LeadPipeInputStream extends PipedInputStream {
+    private static final int BYTE_MASK = 0xFF;
+    private ProjectComponent managingPc;
+
+    /**
+     * Construct a new <code>LeadPipeInputStream</code>.
+     */
+    public LeadPipeInputStream() {
+        super();
+    }
+
+    /**
+     * Construct a new <code>LeadPipeInputStream</code>
+     * with the specified buffer size.
+     * @param size   the size of the circular buffer.
+     */
+    public LeadPipeInputStream(int size) {
+        super();
+        setBufferSize(size);
+    }
+
+    /**
+     * Construct a new <code>LeadPipeInputStream</code> to pull
+     * from the specified <code>PipedOutputStream</code>.
+     * @param src   the <code>PipedOutputStream</code> source.
+     * @throws IOException if unable to construct the stream.
+     */
+    public LeadPipeInputStream(PipedOutputStream src) throws IOException {
+        super(src);
+    }
+
+    /**
+     * Construct a new <code>LeadPipeInputStream</code> to pull
+     * from the specified <code>PipedOutputStream</code>, using a
+     * circular buffer of the specified size.
+     * @param src    the <code>PipedOutputStream</code> source.
+     * @param size   the size of the circular buffer.
+     * @throws IOException if there is an error.
+     */
+    public LeadPipeInputStream(PipedOutputStream src, int size) throws IOException {
+        super(src);
+        setBufferSize(size);
+    }
+
+    //inherit doc
+    /**
+     * Read a byte from the stream.
+     * @return the byte (0 to 255) or -1 if there are no more.
+     * @throws IOException if there is an error.
+     */
+    public synchronized int read() throws IOException {
+        int result = -1;
+        try {
+            result = super.read();
+        } catch (IOException eyeOhEx) {
+            String msg = eyeOhEx.getMessage();
+            if ("write end dead".equalsIgnoreCase(msg)
+                    || "pipe broken".equalsIgnoreCase(msg)) {
+                if (super.in > 0 && super.out < super.buffer.length
+                    && super.out > super.in) {
+                    result = super.buffer[super.out++] & BYTE_MASK;
+                }
+            } else {
+                log("error at LeadPipeInputStream.read():  " + msg,
+                    Project.MSG_INFO);
+            }
+        }
+        return result;
+    }
+
+    /**
+     * Set the size of the buffer.
+     * @param size   the new buffer size.  Ignored if &lt;= current size.
+     */
+    public synchronized void setBufferSize(int size) {
+        if (size > buffer.length) {
+            byte[] newBuffer = new byte[size];
+            if (in >= 0) {
+                if (in > out) {
+                    System.arraycopy(buffer, out, newBuffer, out, in - out);
+                } else {
+                    int outlen = buffer.length - out;
+                    System.arraycopy(buffer, out, newBuffer, 0, outlen);
+                    System.arraycopy(buffer, 0, newBuffer, outlen, in);
+                    in += outlen;
+                    out = 0;
+                }
+            }
+            buffer = newBuffer;
+        }
+    }
+
+    /**
+     * Set a managing <code>Task</code> for
+     * this <code>LeadPipeInputStream</code>.
+     * @param task   the managing <code>Task</code>.
+     */
+    public void setManagingTask(Task task) {
+        setManagingComponent(task);
+    }
+
+    /**
+     * Set a managing <code>ProjectComponent</code> for
+     * this <code>LeadPipeInputStream</code>.
+     * @param pc   the managing <code>ProjectComponent</code>.
+     */
+    public void setManagingComponent(ProjectComponent pc) {
+        this.managingPc = pc;
+    }
+
+    /**
+     * Log a message with the specified logging level.
+     * @param message    the <code>String</code> message.
+     * @param loglevel   the <code>int</code> logging level.
+     */
+    public void log(String message, int loglevel) {
+        if (managingPc != null) {
+            managingPc.log(message, loglevel);
+        } else {
+            if (loglevel > Project.MSG_WARN) {
+                System.out.println(message);
+            } else {
+                System.err.println(message);
+            }
+        }
+    }
+}
+