Use LineOrientedOutputStream with some tweaks to keep BWC signatures in LogOutputStream

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@277671 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/LogOutputStream.java

@@ -17,37 +17,21 @@
 
 package org.apache.tools.ant.taskdefs;
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.OutputStream;
+
 import org.apache.tools.ant.Project;
 import org.apache.tools.ant.ProjectComponent;
 import org.apache.tools.ant.Task;
-
+import org.apache.tools.ant.util.LineOrientedOutputStream;
 
 /**
  * Logs each line written to this stream to the log system of ant.
  *
  * Tries to be smart about line separators.<br>
- * TODO: This class can be split to implement other line based processing
- * of data written to the stream.
  *
  * @since Ant 1.2
  */
-public class LogOutputStream extends OutputStream {
-
-    /** Initial buffer size. */
-    private static final int INTIAL_SIZE = 132;
-
-    /** Carriage return */
-    private static final int CR = 0x0d;
-
-    /** Linefeed */
-    private static final int LF = 0x0a;
-
-    private ByteArrayOutputStream buffer
-        = new ByteArrayOutputStream(INTIAL_SIZE);
-    private boolean skip = false;
+public class LogOutputStream extends LineOrientedOutputStream {
 
     private ProjectComponent pc;
     private int level = Project.MSG_INFO;
@@ -74,41 +58,16 @@ public class LogOutputStream extends OutputStream {
         this.level = level;
     }
 
-
-    /**
-     * Write the data to the buffer and flush the buffer, if a line
-     * separator is detected.
-     *
-     * @param cc data to log (byte).
-     */
-    public void write(int cc) throws IOException {
-        final byte c = (byte) cc;
-        if ((c == '\n') || (c == '\r')) {
-            if (!skip) {
-              processBuffer();
-            }
-        } else {
-          buffer.write(cc);
-        }
-        skip = (c == '\r');
-    }
-
-    /**
-     * Flush this log stream
-     */
-    public void flush() {
-        if (buffer.size() > 0) {
-            processBuffer();
-        }
-    }
-
-
     /**
      * Converts the buffer to a string and sends it to <code>processLine</code>
      */
     protected void processBuffer() {
-        processLine(buffer.toString());
-        buffer.reset();
+        try {
+            super.processBuffer();
+        } catch (IOException e) {
+            // impossible since *our* processLine doesn't throw an IOException
+            throw new RuntimeException("Impossible IOException caught: " + e);
+        }
     }
 
     /**
@@ -129,52 +88,8 @@ public class LogOutputStream extends OutputStream {
         pc.log(line, level);
     }
 
-
-    /**
-     * Writes all remaining
-     */
-    public void close() throws IOException {
-        if (buffer.size() > 0) {
-          processBuffer();
-        }
-        super.close();
-    }
-
     public int getMessageLevel() {
         return level;
     }
 
-    /**
-     * 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.
-     */
-    public 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;
-        }
-    }
-
 }

src/main/org/apache/tools/ant/taskdefs/cvslib/RedirectingOutputStream.java

@@ -1,5 +1,5 @@
 /*
- * Copyright  2002,2004 The Apache Software Foundation
+ * Copyright  2002,2004-2005 The Apache Software Foundation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -16,29 +16,23 @@
  */
 package org.apache.tools.ant.taskdefs.cvslib;
 
-import org.apache.tools.ant.taskdefs.LogOutputStream;
+import org.apache.tools.ant.util.LineOrientedOutputStream;
 
 /**
  * A dummy stream that just passes stuff to the parser.
- *
- * @version $Revision$ $Date$
  */
-class RedirectingOutputStream
-     extends LogOutputStream {
+class RedirectingOutputStream extends LineOrientedOutputStream {
     private final ChangeLogParser parser;
 
-
     /**
      * Creates a new instance of this class.
      *
      * @param parser the parser to which output is sent.
      */
     public RedirectingOutputStream(final ChangeLogParser parser) {
-        super(null, 0);
         this.parser = parser;
     }
 
-
     /**
      * Logs a line to the log system of ant.
      *

src/main/org/apache/tools/ant/util/LineOrientedOutputStream.java

@@ -73,7 +73,7 @@ public abstract class LineOrientedOutputStream extends OutputStream {
      * Converts the buffer to a string and sends it to
      * <code>processLine</code>
      */
-    private void processBuffer() throws IOException {
+    protected void processBuffer() throws IOException {
         try {
             processLine(buffer.toString());
         } finally {