[Archive-access-cvs] SF.net SVN: archive-access:[2989] trunk/archive-access/projects/wayback/ wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/ MetaRefreshUrlStringTransformer.java

[<bra...@us...>]

Revision: 2989
          http://archive-access.svn.sourceforge.net/archive-access/?rev=2989&view=rev
Author:   bradtofel
Date:     2010-03-20 01:11:18 +0000 (Sat, 20 Mar 2010)

Log Message:
-----------
FEATURE: transformer for META refresh tags

Added Paths:
-----------
    trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/MetaRefreshUrlStringTransformer.java

Added: trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/MetaRefreshUrlStringTransformer.java
===================================================================
--- trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/MetaRefreshUrlStringTransformer.java	                        (rev 0)
+++ trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/MetaRefreshUrlStringTransformer.java	2010-03-20 01:11:18 UTC (rev 2989)
@@ -0,0 +1,78 @@
+/* MetaRefreshUrlStringTransformer
+ *
+ * $Id$:
+ *
+ * Created on Jan 12, 2010.
+ *
+ * Copyright (C) 2006 Internet Archive.
+ *
+ * This file is part of Wayback.
+ *
+ * Wayback is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * any later version.
+ *
+ * Wayback is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser Public License
+ * along with Wayback; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+package org.archive.wayback.replay.html.transformer;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.archive.wayback.replay.html.ReplayParseContext;
+import org.archive.wayback.replay.html.StringTransformer;
+
+/**
+ * @author brad
+ *
+ */
+public class MetaRefreshUrlStringTransformer extends URLStringTransformer 
+implements StringTransformer {
+
+	private final static Pattern refreshURLPattern = 
+		Pattern.compile("^\\d+\\s*;\\s*url\\s*=\\s*(.+?)\\s*$",
+				Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
+
+	/* (non-Javadoc)
+	 * @see org.archive.wayback.replay.html.StringTransformer#transform(org.archive.wayback.replay.html.ReplayParseContext, java.lang.String)
+	 */
+	public String transform(ReplayParseContext context, String input) {
+		/*
+		 <META 
+          HTTP-EQUIV="Refresh"
+          CONTENT="0; URL=/ics/default.asp">
+          
+          Our argument "input" is set to the value of the "CONTENT" attribute.
+          
+          So, we need to search for the "URL=", take everything to the right
+          of that, trim it, contextualize it, and return that.
+		 */
+		Matcher m = refreshURLPattern.matcher(input);
+		if(m.matches()) {
+			if(m.groupCount() == 1) {
+				StringBuilder sb = new StringBuilder(input.length() * 2);
+	
+				sb.append(input.substring(0,m.start(1)));
+
+				sb.append(super.transform(context, m.group(1)));
+				
+				// This was temporarily used for testing the regex:
+//				sb.append("(((").append(m.group(1)).append(")))");
+				
+				sb.append(input.substring(m.end(1)));
+				return sb.toString();
+			}
+		}
+		return input;
+	}
+
+}


Property changes on: trunk/archive-access/projects/wayback/wayback-core/src/main/java/org/archive/wayback/replay/html/transformer/MetaRefreshUrlStringTransformer.java
___________________________________________________________________
Added: svn:keywords
   + Author Date Revision Id


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