added FileSystem api

scm-webapp/src/main/java/sonia/scm/BindingExtensionProcessor.java

@@ -43,6 +43,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import sonia.scm.group.GroupListener;
+import sonia.scm.io.FileSystem;
 import sonia.scm.plugin.ext.Extension;
 import sonia.scm.plugin.ext.ExtensionProcessor;
 import sonia.scm.repository.RepositoryHandler;
@@ -188,6 +189,15 @@ public class BindingExtensionProcessor implements ExtensionProcessor
 
           resourceHandler.addBinding().to(extensionClass);
         }
+        else if (FileSystem.class.isAssignableFrom(extensionClass))
+        {
+          if (logger.isInfoEnabled())
+          {
+            logger.info("bind FileSystem {}", extensionClass.getName());
+          }
+
+          fileSystemClass = extensionClass;
+        }
         else
         {
           if (logger.isInfoEnabled())
@@ -243,6 +253,17 @@ public class BindingExtensionProcessor implements ExtensionProcessor
     return authenticationListeners;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public Class<? extends FileSystem> getFileSystemClass()
+  {
+    return fileSystemClass;
+  }
+
   /**
    * Method description
    *
@@ -337,6 +358,9 @@ public class BindingExtensionProcessor implements ExtensionProcessor
   /** Field description */
   private Set<Class<?>> extensions;
 
+  /** Field description */
+  private Class<? extends FileSystem> fileSystemClass;
+
   /** Field description */
   private Set<Module> moduleSet;
 

scm-webapp/src/main/java/sonia/scm/ScmServletModule.java

@@ -49,6 +49,8 @@ import sonia.scm.filter.SSLFilter;
 import sonia.scm.filter.SecurityFilter;
 import sonia.scm.group.GroupManager;
 import sonia.scm.group.xml.XmlGroupManager;
+import sonia.scm.io.DefaultFileSystem;
+import sonia.scm.io.FileSystem;
 import sonia.scm.plugin.DefaultPluginManager;
 import sonia.scm.plugin.Plugin;
 import sonia.scm.plugin.PluginLoader;
@@ -175,6 +177,16 @@ public class ScmServletModule extends ServletModule
     bind(EncryptionHandler.class).to(MessageDigestEncryptionHandler.class);
     bindExtProcessor.bindExtensions(binder());
 
+    Class<? extends FileSystem> fileSystem =
+      bindExtProcessor.getFileSystemClass();
+
+    if (fileSystem == null)
+    {
+      fileSystem = DefaultFileSystem.class;
+    }
+
+    bind(FileSystem.class).to(fileSystem);
+
     // bind security stuff
     bind(AuthenticationManager.class).to(ChainAuthenticatonManager.class);
     bind(SecurityContext.class).to(BasicSecurityContext.class);