--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/hyperlink/URLHyperlinkDetector.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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
+ *     Benjamin Muskalla <b.muskalla@gmx.net> - https://bugs.eclipse.org/bugs/show_bug.cgi?id=156433
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.text.hyperlink.URLHyperlinkDetector;
+
+import dwt.dwthelper.utils;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.StringTokenizer;
+
+import dwtx.jface.text.BadLocationException;
+import dwtx.jface.text.IDocument;
+import dwtx.jface.text.IRegion;
+import dwtx.jface.text.ITextViewer;
+import dwtx.jface.text.Region;
+
+
+/**
+ * URL hyperlink detector.
+ *
+ * @since 3.1
+ */
+public class URLHyperlinkDetector : AbstractHyperlinkDetector {
+
+
+    /**
+     * Creates a new URL hyperlink detector.
+     *
+     * @since 3.2
+     */
+    public URLHyperlinkDetector() {
+    }
+    
+    /**
+     * Creates a new URL hyperlink detector.
+     *
+     * @param textViewer the text viewer in which to detect the hyperlink
+     * @deprecated As of 3.2, replaced by {@link URLHyperlinkDetector}
+     */
+    public URLHyperlinkDetector(ITextViewer textViewer) {
+    }
+
+    /*
+     * @see dwtx.jface.text.hyperlink.IHyperlinkDetector#detectHyperlinks(dwtx.jface.text.ITextViewer, dwtx.jface.text.IRegion, bool)
+     */
+    public IHyperlink[] detectHyperlinks(ITextViewer textViewer, IRegion region, bool canShowMultipleHyperlinks) {
+        if (region is null || textViewer is null)
+            return null;
+
+        IDocument document= textViewer.getDocument();
+
+        int offset= region.getOffset();
+
+        String urlString= null;
+        if (document is null)
+            return null;
+
+        IRegion lineInfo;
+        String line;
+        try {
+            lineInfo= document.getLineInformationOfOffset(offset);
+            line= document.get(lineInfo.getOffset(), lineInfo.getLength());
+        } catch (BadLocationException ex) {
+            return null;
+        }
+
+        int offsetInLine= offset - lineInfo.getOffset();
+
+        bool startDoubleQuote= false;
+        int urlOffsetInLine= 0;
+        int urlLength= 0;
+        
+        int urlSeparatorOffset= line.indexOf("://"); //$NON-NLS-1$
+        while (urlSeparatorOffset >= 0) {
+
+            // URL protocol (left to "://")
+            urlOffsetInLine= urlSeparatorOffset;
+            char ch;
+            do {
+                urlOffsetInLine--;
+                ch= ' ';
+                if (urlOffsetInLine > -1)
+                    ch= line.charAt(urlOffsetInLine);
+                startDoubleQuote= ch is '"';
+            } while (Character.isUnicodeIdentifierStart(ch));
+            urlOffsetInLine++;
+
+            // Right to "://"
+            StringTokenizer tokenizer= new StringTokenizer(line.substring(urlSeparatorOffset + 3), " \t\n\r\f<>", false); //$NON-NLS-1$
+            if (!tokenizer.hasMoreTokens())
+                return null;
+
+            urlLength= tokenizer.nextToken().length() + 3 + urlSeparatorOffset - urlOffsetInLine;
+            if (offsetInLine >= urlOffsetInLine && offsetInLine <= urlOffsetInLine + urlLength)
+                break;
+        
+            urlSeparatorOffset= line.indexOf("://", urlSeparatorOffset + 1); //$NON-NLS-1$
+        }
+        
+        if (urlSeparatorOffset < 0)
+            return null;
+
+        if (startDoubleQuote) {
+            int endOffset= -1;
+            int nextDoubleQuote= line.indexOf('"', urlOffsetInLine);
+            int nextWhitespace= line.indexOf(' ', urlOffsetInLine);
+            if (nextDoubleQuote !is -1 && nextWhitespace !is -1)
+                endOffset= Math.min(nextDoubleQuote, nextWhitespace);
+            else if (nextDoubleQuote !is -1)
+                endOffset= nextDoubleQuote;
+            else if (nextWhitespace !is -1)
+                endOffset= nextWhitespace;
+            if (endOffset !is -1)
+                urlLength= endOffset - urlOffsetInLine;
+        }
+
+        // Set and validate URL string
+        try {
+            urlString= line.substring(urlOffsetInLine, urlOffsetInLine + urlLength);
+            new URL(urlString);
+        } catch (MalformedURLException ex) {
+            urlString= null;
+            return null;
+        }
+
+        IRegion urlRegion= new Region(lineInfo.getOffset() + urlOffsetInLine, urlLength);
+        return new IHyperlink[] {new URLHyperlink(urlRegion, urlString)};
+    }
+
+}