*) Bugfix for resolveBackpath problem with tailing /..

*) Junit testclass for resolveBackpath testing 

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2850 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/net/URL.java

@@ -161,7 +161,7 @@ public class URL {
     }
 
     //  resolve '..'
-    private String resolveBackpath(String path) /* throws MalformedURLException */ {
+    String resolveBackpath(String path) /* throws MalformedURLException */ {
         /* original version by [MC]
         int p;
         while ((p = path.indexOf("/..")) >= 0) {
@@ -174,7 +174,7 @@ public class URL {
         /* by [MT] */
         if (path.length() == 0 || path.charAt(0) != '/') { path = "/" + path; }
 
-        Pattern pathPattern = Pattern.compile("(/[^/\\.]+/)[.]{2}(?=/)|/\\.(?=/)|/(?=/)");
+        Pattern pathPattern = Pattern.compile("(/[^/]+(?<!/\\.{1,2})/)[.]{2}(?=/|$)|/\\.(?=/)|/(?=/)");
         Matcher matcher = pathPattern.matcher(path);
         while (matcher.find()) {
             path = matcher.replaceAll("");
@@ -183,7 +183,7 @@ public class URL {
         
         /* another version at http://www.yacy-forum.de/viewtopic.php?p=26871#26871 */
         
-        return path;
+        return path.equals("")?"/":path;
     }
     
     /**

test/de/anomic/net/URLTest.java

@@ -0,0 +1,40 @@
+package de.anomic.net;
+
+import java.net.MalformedURLException;
+
+import junit.framework.TestCase;
+
+public class URLTest extends TestCase {
+
+	public void testResolveBackpath() throws MalformedURLException {
+		String[][] testStrings = new String[][] {
+				new String[]{"/..home","/..home"},
+				new String[]{"/test/..home/test.html","/test/..home/test.html"},
+				new String[]{"/../","/../"},
+				new String[]{"/..","/.."},
+				new String[]{"/test/..","/"},
+				new String[]{"/test/../","/"},
+				new String[]{"/test/test2/..","/test"},
+				new String[]{"/test/test2/../","/test/"},
+				new String[]{"/test/test2/../hallo","/test/hallo"},
+				new String[]{"/test/test2/../hallo/","/test/hallo/"},
+				new String[]{"/home/..test/../hallo/../","/home/"}
+		};		
+		
+		URL urlObj = new URL("http://yacy.net");
+		for (int i=0; i < testStrings.length; i++) {
+			// desired conversion result
+			System.out.print("testResolveBackpath: " + testStrings[i][0]);
+			String shouldBe = testStrings[i][1];
+			
+			// conversion result
+			String resolvedURL = urlObj.resolveBackpath(testStrings[i][0]);
+			
+			// test if equal
+			assertEquals(shouldBe,resolvedURL);
+			System.out.println(" -> " + resolvedURL);
+			
+		}		
+	}
+	
+}