--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/DefaultLineTracker.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.text.DefaultLineTracker;
+
+import dwt.dwthelper.utils;
+
+
+/**
+ * Standard implementation of {@link dwtx.jface.text.ILineTracker}.
+ * <p>
+ * The line tracker considers the three common line delimiters which are '\n',
+ * '\r', '\r\n'.
+ * <p>
+ * This class is not intended to be subclassed.
+ * </p>
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class DefaultLineTracker : AbstractLineTracker {
+
+    /** The predefined delimiters of this tracker */
+    public final static String[] DELIMITERS= { "\r", "\n", "\r\n" }; //$NON-NLS-3$ //$NON-NLS-1$ //$NON-NLS-2$
+    /** A predefined delimiter information which is always reused as return value */
+    private DelimiterInfo fDelimiterInfo= new DelimiterInfo();
+
+
+    /**
+     * Creates a standard line tracker.
+     */
+    public DefaultLineTracker() {
+    }
+
+    /*
+     * @see dwtx.jface.text.ILineTracker#getLegalLineDelimiters()
+     */
+    public String[] getLegalLineDelimiters() {
+        return TextUtilities.copy(DELIMITERS);
+    }
+
+    /*
+     * @see dwtx.jface.text.AbstractLineTracker#nextDelimiterInfo(java.lang.String, int)
+     */
+    protected DelimiterInfo nextDelimiterInfo(String text, int offset) {
+
+        char ch;
+        int length= text.length();
+        for (int i= offset; i < length; i++) {
+
+            ch= text.charAt(i);
+            if (ch is '\r') {
+
+                if (i + 1 < length) {
+                    if (text.charAt(i + 1) is '\n') {
+                        fDelimiterInfo.delimiter= DELIMITERS[2];
+                        fDelimiterInfo.delimiterIndex= i;
+                        fDelimiterInfo.delimiterLength= 2;
+                        return fDelimiterInfo;
+                    }
+                }
+
+                fDelimiterInfo.delimiter= DELIMITERS[0];
+                fDelimiterInfo.delimiterIndex= i;
+                fDelimiterInfo.delimiterLength= 1;
+                return fDelimiterInfo;
+
+            } else if (ch is '\n') {
+
+                fDelimiterInfo.delimiter= DELIMITERS[1];
+                fDelimiterInfo.delimiterIndex= i;
+                fDelimiterInfo.delimiterLength= 1;
+                return fDelimiterInfo;
+            }
+        }
+
+        return null;
+    }
+}