start implementation of git repositorybrowser

plugins/scm-git-plugin/src/main/java/sonia/scm/repository/GitRepositoryBrowser.java

@@ -0,0 +1,219 @@
+/**
+ * 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.eclipse.jgit.dircache.DirCache;
+import org.eclipse.jgit.dircache.DirCacheIterator;
+import org.eclipse.jgit.errors.MissingObjectException;
+import org.eclipse.jgit.lib.Constants;
+import org.eclipse.jgit.lib.ObjectId;
+import org.eclipse.jgit.lib.ObjectLoader;
+import org.eclipse.jgit.lib.RepositoryCache;
+import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.treewalk.TreeWalk;
+import org.eclipse.jgit.util.FS;
+
+import sonia.scm.util.Util;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class GitRepositoryBrowser implements RepositoryBrowser
+{
+
+  /**
+   * Constructs ...
+   *
+   *
+   * @param handler
+   * @param repository
+   */
+  public GitRepositoryBrowser(GitRepositoryHandler handler,
+                              Repository repository)
+  {
+    this.handler = handler;
+    this.repository = repository;
+  }
+
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param revision
+   * @param path
+   *
+   * @return
+   *
+   * @throws IOException
+   * @throws RepositoryException
+   */
+  @Override
+  public InputStream getContent(String revision, String path)
+          throws IOException, RepositoryException
+  {
+    throw new UnsupportedOperationException("Not supported yet.");
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @param revision
+   * @param path
+   *
+   * @return
+   *
+   * @throws IOException
+   * @throws RepositoryException
+   */
+  @Override
+  public BrowserResult getResult(String revision, String path)
+          throws IOException, RepositoryException
+  {
+    BrowserResult result = null;
+    File directory = handler.getDirectory(repository);
+    org.eclipse.jgit.lib.Repository repo =
+      RepositoryCache.open(RepositoryCache.FileKey.lenient(directory,
+        FS.DETECTED), true);
+
+    try
+    {
+
+      ObjectId revId = getRevisionId(repo, revision);
+
+      DirCache cache = new DirCache(directory, FS.DETECTED);
+      TreeWalk treeWalk = new TreeWalk(repo);
+
+      treeWalk.addTree(new RevWalk(repo).parseTree(revId));
+      treeWalk.addTree(new DirCacheIterator(cache));
+      result = new BrowserResult();
+
+      FileObject root = new FileObject();
+
+      root.setDirectory(true);
+      root.setPath(Util.nonNull(path));
+
+      List<FileObject> files = new ArrayList<FileObject>();
+
+      root.setChildren(files);
+      result.setFile(root);
+      result.setRevision(revId.getName());
+
+      while (treeWalk.next())
+      {
+        files.add(createFileObject(repo, treeWalk));
+      }
+    }
+    finally
+    {
+      if (repo != null)
+      {
+        repo.close();
+      }
+    }
+
+    return result;
+  }
+  
+  
+  private ObjectId getRevisionId( org.eclipse.jgit.lib.Repository repo, String revision ) throws IOException{
+          ObjectId revId = null;
+
+      if (Util.isNotEmpty(revision))
+      {
+        revId = repo.resolve(revision);
+      }
+      else
+      {
+        revId = repo.resolve(Constants.HEAD);
+      }
+      return revId;
+  }
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param repo
+   * @param treeWalk
+   *
+   * @return
+   *
+   * @throws IOException
+   * @throws MissingObjectException
+   */
+  private FileObject createFileObject(org.eclipse.jgit.lib.Repository repo,
+          TreeWalk treeWalk)
+          throws IOException
+  {
+    FileObject file = new FileObject();
+
+    file.setName(treeWalk.getNameString());
+    file.setPath(treeWalk.getPathString());
+
+    ObjectLoader loader = repo.open(treeWalk.getObjectId(0));
+
+    file.setDirectory(loader.getType() == Constants.OBJ_TREE);
+    file.setLength(loader.getSize());
+
+    // TODO
+    file.setLastModified(System.currentTimeMillis());
+
+    return file;
+  }
+
+  //~--- fields ---------------------------------------------------------------
+
+  /** Field description */
+  private GitRepositoryHandler handler;
+
+  /** Field description */
+  private Repository repository;
+}

plugins/scm-git-plugin/src/main/java/sonia/scm/repository/GitRepositoryHandler.java

@@ -119,6 +119,22 @@ public class GitRepositoryHandler
     return changesetViewer;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @param repository
+   *
+   * @return
+   */
+  @Override
+  public RepositoryBrowser getRepositoryBrowser(Repository repository)
+  {
+    AssertUtil.assertIsNotNull(repository);
+
+    return new GitRepositoryBrowser(this, repository);
+  }
+
   /**
    * Method description
    *