1 files changed, 158 insertions, 0 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineOrientedOutputStream.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineOrientedOutputStream.java
new file mode 100644
index 00000000..073a89f1
--- /dev/null
+++ b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/ant/util/LineOrientedOutputStream.java
@@ -0,0 +1,158 @@
+/*
+ *  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.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ * Invokes {@link #processLine processLine} whenever a full line has
+ * been written to this stream.
+ *
+ * <p>Tries to be smart about line separators.</p>
+ */
+public abstract class LineOrientedOutputStream extends OutputStream {
+
+    /** Initial buffer size. */
+    private static final int INITIAL_SIZE = 132;
+
+    /** Carriage return */
+    private static final int CR = 0x0d;
+
+    /** Linefeed */
+    private static final int LF = 0x0a;
+
+    private ByteArrayOutputStream buffer
+        = new ByteArrayOutputStream(INITIAL_SIZE);
+    private boolean skip = false;
+
+    /**
+     * Write the data to the buffer and flush the buffer, if a line
+     * separator is detected.
+     *
+     * @param cc data to log (byte).
+     * @throws IOException if there is an error.
+     */
+    @Override
+    public final void write(int cc) throws IOException {
+        final byte c = (byte) cc;
+        if ((c == LF) || (c == CR)) {
+            if (!skip) {
+              processBuffer();
+            }
+        } else {
+            buffer.write(cc);
+        }
+        skip = (c == CR);
+    }
+
+    /**
+     * Flush this log stream
+     * @throws IOException if there is an error.
+     */
+    @Override
+    public void flush() throws IOException {
+    }
+
+    /**
+     * Converts the buffer to a byte[] and sends it to
+     * <code>processLine</code>
+     * @throws IOException if there is an error.
+     */
+    protected void processBuffer() throws IOException {
+        try {
+            processLine(buffer.toByteArray());
+        } finally {
+            buffer.reset();
+        }
+    }
+
+    /**
+     * Processes a line.
+     *
+     * @param line the line to log.
+     * @throws IOException if there is an error.
+     */
+    protected abstract void processLine(String line) throws IOException;
+
+    /**
+     * Processes a line.
+     *
+     * <p>This implementations invokes the string-arg version
+     * converting the byte array using the default encoding.
+     * Subclasses are encouraged to override this method (and provide
+     * a dummy implementation of the String-arg version) so they don't
+     * interfere with the encoding of the underlying stream.</p>
+     *
+     * @param line the line to log.
+     * @throws IOException if there is an error.
+     * @since Ant 1.8.3
+     */
+    protected void processLine(byte[] line) throws IOException {
+        processLine(new String(line));
+    }
+
+    /**
+     * Writes all remaining
+     * @throws IOException if there is an error.
+     */
+    @Override
+    public void close() throws IOException {
+        if (buffer.size() > 0) {
+            processBuffer();
+        }
+        super.close();
+    }
+
+    /**
+     * Write a block of characters to the output stream
+     *
+     * @param b the array containing the data
+     * @param off the offset into the array where data starts
+     * @param len the length of block
+     *
+     * @throws IOException if the data cannot be written into the stream.
+     */
+    @Override
+    public final void write(byte[] b, int off, int len) throws IOException {
+        // find the line breaks and pass other chars through in blocks
+        int offset = off;
+        int blockStartOffset = offset;
+        int remaining = len;
+        while (remaining > 0) {
+            while (remaining > 0 && b[offset] != LF && b[offset] != CR) {
+                offset++;
+                remaining--;
+            }
+            // either end of buffer or a line separator char
+            int blockLength = offset - blockStartOffset;
+            if (blockLength > 0) {
+                buffer.write(b, blockStartOffset, blockLength);
+            }
+            while (remaining > 0 && (b[offset] == LF || b[offset] == CR)) {
+                write(b[offset]);
+                offset++;
+                remaining--;
+            }
+            blockStartOffset = offset;
+        }
+    }
+
+}