Move appjar contents up one level to normalize our structure

In general we map one Maven project description to one Git
repository, as each Maven project has its own unique version
number for its artifact.

This change pulls everything up one level so its a much more
typical directory layout, where the pom.xml is at the root
of the directory structure.

Signed-off-by: Shawn O. Pearce <sop@google.com>

src/main/java/com/google/gerrit/client/data/GitwebLink.java

@@ -0,0 +1,83 @@
+// Copyright 2008 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.gerrit.client.data;
+
+import com.google.gerrit.client.reviewdb.Branch;
+import com.google.gerrit.client.reviewdb.PatchSet;
+import com.google.gerrit.client.reviewdb.Project;
+import com.google.gwt.http.client.URL;
+
+/** Link to an external gitweb server. */
+public class GitwebLink {
+  protected String baseUrl;
+
+  protected GitwebLink() {
+  }
+
+  public GitwebLink(final String base) {
+    baseUrl = base + "?";
+  }
+
+  public String toRevision(final Project.NameKey project, final PatchSet ps) {
+    final StringBuilder r = new StringBuilder();
+    p(r, project);
+    h(r, ps);
+    return baseUrl + r;
+  }
+
+  public String toProject(final Project.NameKey project) {
+    final StringBuilder r = new StringBuilder();
+    p(r, project);
+    a(r, "summary");
+    return baseUrl + r;
+  }
+
+  public String toBranch(final Branch.NameKey branch) {
+    final StringBuilder r = new StringBuilder();
+    p(r, branch.getParentKey());
+    h(r, branch);
+    a(r, "shortlog");
+    return baseUrl + r;
+  }
+
+  private static void p(final StringBuilder r, final Project.NameKey project) {
+    String n = project.get();
+    if (!n.endsWith(".git")) {
+      n += ".git";
+    }
+    var(r, "p", n);
+  }
+
+  private static void h(final StringBuilder r, final PatchSet ps) {
+    var(r, "h", ps.getRevision().get());
+  }
+
+  private static void h(final StringBuilder r, final Branch.NameKey branch) {
+    var(r, "h", branch.get());
+  }
+
+  private static void a(final StringBuilder r, final String where) {
+    var(r, "a", where);
+  }
+
+  private static void var(final StringBuilder r, final String n, final String v) {
+    if (r.length() > 0) {
+      r.append(";");
+    }
+    r.append(n);
+    r.append("=");
+    r.append(URL.encodeComponent(v));
+  }
+}