[ jEdit-commits ] SF.net SVN: jedit:[16072] plugins/DirtyGutter/trunk

[<sh...@us...>]

Revision: 16072
          http://jedit.svn.sourceforge.net/jedit/?rev=16072&view=rev
Author:   shlomy
Date:     2009-08-26 16:03:11 +0000 (Wed, 26 Aug 2009)

Log Message:
-----------
Beginning of md5 checksum-based dirty line provider.

Modified Paths:
--------------
    plugins/DirtyGutter/trunk/services.xml
    plugins/DirtyGutter/trunk/src/lcm/painters/ColoredRectWithStripsPainter.java

Added Paths:
-----------
    plugins/DirtyGutter/trunk/src/lcm/providers/md5/
    plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumBufferHandler.java
    plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumDirtyLineProvider.java

Modified: plugins/DirtyGutter/trunk/services.xml
===================================================================
--- plugins/DirtyGutter/trunk/services.xml	2009-08-26 08:49:18 UTC (rev 16071)
+++ plugins/DirtyGutter/trunk/services.xml	2009-08-26 16:03:11 UTC (rev 16072)
@@ -9,4 +9,7 @@
 	<SERVICE CLASS="lcm.DirtyLineProvider" NAME="Diff">
 		new lcm.providers.diff.DiffDirtyLineProvider();
 	</SERVICE>
+	<SERVICE CLASS="lcm.DirtyLineProvider" NAME="MD5">
+		new lcm.providers.md5.ChecksumDirtyLineProvider();
+	</SERVICE>
 </SERVICES>
\ No newline at end of file

Modified: plugins/DirtyGutter/trunk/src/lcm/painters/ColoredRectWithStripsPainter.java
===================================================================
--- plugins/DirtyGutter/trunk/src/lcm/painters/ColoredRectWithStripsPainter.java	2009-08-26 08:49:18 UTC (rev 16071)
+++ plugins/DirtyGutter/trunk/src/lcm/painters/ColoredRectWithStripsPainter.java	2009-08-26 16:03:11 UTC (rev 16072)
@@ -29,7 +29,7 @@
 
 public class ColoredRectWithStripsPainter extends ColoredRectDirtyMarkPainter
 {
-	static final int STRIP_HEIGHT = 1;
+	static final int STRIP_HEIGHT = 2;
 	private int stripHeight = STRIP_HEIGHT;
 	private Color stripColor = Color.RED;
 	private boolean topStrip = false, middleRect = false, bottomStrip = false;

Added: plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumBufferHandler.java
===================================================================
--- plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumBufferHandler.java	                        (rev 0)
+++ plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumBufferHandler.java	2009-08-26 16:03:11 UTC (rev 16072)
@@ -0,0 +1,124 @@
+package lcm.providers.md5;
+
+import java.awt.Color;
+import java.nio.ByteBuffer;
+import java.nio.CharBuffer;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Comparator;
+import java.util.TreeMap;
+
+import javax.swing.text.Position;
+
+import org.gjt.sp.jedit.Buffer;
+import org.gjt.sp.jedit.buffer.BufferAdapter;
+import org.gjt.sp.jedit.buffer.JEditBuffer;
+
+import lcm.BufferHandler;
+import lcm.LCMPlugin;
+import lcm.painters.ColoredRectDirtyMarkPainter;
+import lcm.painters.DirtyMarkPainter;
+
+public class ChecksumBufferHandler extends BufferAdapter implements BufferHandler
+{
+	private Buffer buffer;
+	private ColoredRectDirtyMarkPainter painter;
+	private TreeMap<Position, byte []> md5;
+	
+	public ChecksumBufferHandler(Buffer buffer)
+	{
+		this.buffer = buffer;
+		md5 = new TreeMap<Position, byte []>(new PositionComparator());
+		painter = new ColoredRectDirtyMarkPainter();
+		painter.setColor(Color.YELLOW);
+	}
+
+	public void bufferSaved(Buffer buffer)
+	{
+		md5.clear();
+	}
+
+	public DirtyMarkPainter getDirtyMarkPainter(Buffer buffer, int physicalLine)
+	{
+		byte[] b1 = calculateHash(buffer.getLineText(physicalLine));
+		byte[] b2 = md5.get(new FixedPosition(physicalLine));
+		if (b2 == null)
+			b2 = calculateHash(getFileLine(physicalLine));
+		if (b1.length != b2.length)
+		{
+			Position p = buffer.createPosition(buffer.getLineStartOffset(physicalLine));
+			md5.put(p, b2);
+			return painter;
+		}
+		for (int i = 0; i < b1.length; i++)
+		{
+			if (b1[i] != b2[i])
+			{
+				Position p = buffer.createPosition(buffer.getLineStartOffset(physicalLine));
+				md5.put(p, b2);
+				return painter;
+			}
+		}
+		return null;
+	}
+
+	private String getFileLine(int line)
+	{
+		String [] lines = LCMPlugin.getInstance().readFile(buffer.getPath());
+		return lines[line];
+	}
+
+	public void contentInserted(JEditBuffer buffer, int startLine, int offset,
+		int numLines, int length)
+	{
+	}
+
+	public void contentRemoved(JEditBuffer buffer, int startLine, int offset,
+		int numLines, int length)
+	{
+	}
+
+	private byte[] calculateHash(String line)
+	{
+		ByteBuffer bb = null;
+		int length = line.length();
+		bb = ByteBuffer.allocate(length * 2);	// Chars are 2 bytes
+		CharBuffer cb = bb.asCharBuffer();
+		cb.append(line);
+		MessageDigest digest;
+		try {
+			digest = java.security.MessageDigest.getInstance("MD5");
+			digest.update(bb);
+			return digest.digest();
+		} catch (NoSuchAlgorithmException e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+
+	private class PositionComparator implements Comparator<Position>
+	{
+		public int compare(Position o1, Position o2)
+		{
+			int i1 = o1.getOffset();
+			int i2 = o2.getOffset();
+			if (i1 < i2)
+				return (-1);
+			if (i1 > i2)
+				return 1;
+			return 0;
+		}
+	}
+	private class FixedPosition implements Position
+	{
+		int offset;
+		public FixedPosition(int line)
+		{
+			offset = buffer.getLineStartOffset(line);
+		}
+		public int getOffset()
+		{
+			return offset;
+		}
+	}
+}

Added: plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumDirtyLineProvider.java
===================================================================
--- plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumDirtyLineProvider.java	                        (rev 0)
+++ plugins/DirtyGutter/trunk/src/lcm/providers/md5/ChecksumDirtyLineProvider.java	2009-08-26 16:03:11 UTC (rev 16072)
@@ -0,0 +1,20 @@
+package lcm.providers.md5;
+import org.gjt.sp.jedit.Buffer;
+
+import lcm.BufferHandler;
+import lcm.DirtyLineProvider;
+
+
+public class ChecksumDirtyLineProvider implements DirtyLineProvider
+{
+
+	public BufferHandler attach(Buffer buffer)
+	{
+		return new ChecksumBufferHandler(buffer);
+	}
+
+	public void detach(Buffer buffer, BufferHandler handler)
+	{
+	}
+
+}


This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.