fixing bug concerning an error which occurred because of spaces in web application path

scm-webapp/src/main/java/sonia/scm/plugin/DefaultPluginLoader.java

@@ -46,11 +46,13 @@ import sonia.scm.util.IOUtil;
 
 //~--- JDK imports ------------------------------------------------------------
 
+import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 
 import java.net.URL;
+import java.net.URLDecoder;
 
 import java.util.Collection;
 import java.util.Enumeration;
@@ -66,6 +68,9 @@ import javax.xml.bind.JAXB;
 public class DefaultPluginLoader implements PluginLoader
 {
 
+  /** Field description */
+  public static final String ENCODING = "UTF-8";
+
   /** Field description */
   public static final String PATH_PLUGINCONFIG = "META-INF/scm/plugin.xml";
 
@@ -161,6 +166,33 @@ public class DefaultPluginLoader implements PluginLoader
 
   //~--- methods --------------------------------------------------------------
 
+  /**
+   * Method description
+   *
+   *
+   * @param path
+   *
+   * @return
+   */
+  private String decodePath(String path)
+  {
+    File file = new File(path);
+
+    if (!file.exists())
+    {
+      try
+      {
+        path = URLDecoder.decode(path, ENCODING);
+      }
+      catch (IOException ex)
+      {
+        logger.error(ex.getMessage(), ex);
+      }
+    }
+
+    return path;
+  }
+
   /**
    * Method description
    *
@@ -199,6 +231,7 @@ public class DefaultPluginLoader implements PluginLoader
       String path = url.toExternalForm();
 
       path = path.substring("jar:file:".length(), path.lastIndexOf("!"));
+      path = decodePath(path);
 
       boolean corePlugin = path.matches(REGE_COREPLUGIN);