added diff support for subversion

scm-plugins/scm-svn-plugin/src/main/java/sonia/scm/repository/SvnDiffViewer.java

@@ -0,0 +1,142 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.repository;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.tmatesoft.svn.core.SVNDepth;
+import org.tmatesoft.svn.core.SVNURL;
+import org.tmatesoft.svn.core.wc.SVNClientManager;
+import org.tmatesoft.svn.core.wc.SVNDiffClient;
+import org.tmatesoft.svn.core.wc.SVNRevision;
+
+import sonia.scm.util.AssertUtil;
+import sonia.scm.util.Util;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.File;
+import java.io.IOException;
+import java.io.OutputStream;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class SvnDiffViewer implements DiffViewer
+{
+
+  /** the logger for SvnDiffViewer */
+  private static final Logger logger =
+    LoggerFactory.getLogger(SvnDiffViewer.class);
+
+  //~--- constructors ---------------------------------------------------------
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param directory
+   */
+  public SvnDiffViewer(File directory)
+  {
+    this.directory = directory;
+  }
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param handler
+   * @param repository
+   */
+  public SvnDiffViewer(SvnRepositoryHandler handler, Repository repository)
+  {
+    this(handler.getDirectory(repository));
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param revision
+   * @param path
+   * @param output
+   *
+   * @throws IOException
+   * @throws RepositoryException
+   */
+  @Override
+  public void getDiff(String revision, String path, OutputStream output)
+          throws IOException, RepositoryException
+  {
+    AssertUtil.assertIsNotEmpty(revision);
+    AssertUtil.assertIsNotNull(output);
+
+    try
+    {
+
+      // TODO add diff for single path
+      SVNURL svnurl = SVNURL.fromFile(directory);
+
+      if (Util.isNotEmpty(path))
+      {
+        svnurl = svnurl.appendPath(path, true);
+      }
+
+      SVNClientManager clientManager = SVNClientManager.newInstance();
+      SVNDiffClient diffClient = clientManager.getDiffClient();
+      long currentRev = Long.parseLong(revision);
+
+      diffClient.doDiff(svnurl, SVNRevision.HEAD,
+                        SVNRevision.create(currentRev),
+                        SVNRevision.create(currentRev - 1), SVNDepth.INFINITY,
+                        false, output);
+    }
+    catch (Exception ex)
+    {
+      logger.error("could not create blame view", ex);
+    }
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private File directory;
+}

scm-plugins/scm-svn-plugin/src/main/java/sonia/scm/repository/SvnRepositoryHandler.java

@@ -113,6 +113,37 @@ public class SvnRepositoryHandler
 
   //~--- get methods ----------------------------------------------------------
 
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   *
+   * @return
+   */
+  @Override
+  public BlameViewer getBlameViewer(Repository repository)
+  {
+    SvnBlameViewer blameViewer = null;
+
+    AssertUtil.assertIsNotNull(repository);
+
+    String type = repository.getType();
+
+    AssertUtil.assertIsNotEmpty(type);
+
+    if (TYPE_NAME.equals(type))
+    {
+      blameViewer = new SvnBlameViewer(this, repository);
+    }
+    else
+    {
+      throw new IllegalArgumentException("svn repository is required");
+    }
+
+    return blameViewer;
+  }
+
   /**
    * Method description
    *
@@ -138,35 +169,44 @@ public class SvnRepositoryHandler
     }
     else
     {
-      throw new IllegalArgumentException("mercurial repository is required");
+      throw new IllegalArgumentException("svn repository is required");
     }
 
     return changesetViewer;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   *
+   * @return
+   */
   @Override
-  public BlameViewer getBlameViewer(Repository repository) {
-  	SvnBlameViewer blameViewer = null;
+  public DiffViewer getDiffViewer(Repository repository)
+  {
+    SvnDiffViewer diffViewer = null;
 
-  	AssertUtil.assertIsNotNull(repository);
+    AssertUtil.assertIsNotNull(repository);
 
-  	String type = repository.getType();
+    String type = repository.getType();
 
-  	AssertUtil.assertIsNotEmpty(type);
+    AssertUtil.assertIsNotEmpty(type);
 
-  	if (TYPE_NAME.equals(type))
-  	{
-  		blameViewer = new SvnBlameViewer(this, repository);
-  	}
-  	else
-  	{
-  		throw new IllegalArgumentException("svn repository is required");
-  	}
+    if (TYPE_NAME.equals(type))
+    {
+      diffViewer = new SvnDiffViewer(this, repository);
+    }
+    else
+    {
+      throw new IllegalArgumentException("svn repository is required");
+    }
 
-  	return blameViewer;
+    return diffViewer;
   }
 
-	/**
+  /**
    * Method description
    *
    *