1 files changed, 125 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/util/SubmoduleSectionParser.java b/gerrit-server/src/main/java/com/google/gerrit/server/util/SubmoduleSectionParser.java
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index 0000000000..7310703c0d
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+++ b/gerrit-server/src/main/java/com/google/gerrit/server/util/SubmoduleSectionParser.java
@@ -0,0 +1,125 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// 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.server.util;
+
+import com.google.gerrit.reviewdb.client.Branch;
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.gerrit.reviewdb.client.SubmoduleSubscription;
+import com.google.gerrit.server.git.GitRepositoryManager;
+
+import org.eclipse.jgit.lib.BlobBasedConfig;
+import org.eclipse.jgit.lib.Constants;
+
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * It parses from a configuration file submodule sections.
+ * <p>
+ * Example of submodule sections:
+ *
+ * <pre>
+ * [submodule "project-a"]
+ *     url = http://localhost/a
+ *     path = a
+ *     branch = .
+ *
+ * [submodule "project-b"]
+ *     url = http://localhost/b
+ *     path = b
+ *     branch = refs/heads/test
+ * </pre>
+ */
+public class SubmoduleSectionParser {
+  private final BlobBasedConfig bbc;
+  private final String thisServer;
+  private final Branch.NameKey superProjectBranch;
+  private final GitRepositoryManager repoManager;
+
+  public SubmoduleSectionParser(final BlobBasedConfig bbc,
+      final String thisServer, final Branch.NameKey superProjectBranch,
+      final GitRepositoryManager repoManager) {
+    this.bbc = bbc;
+    this.thisServer = thisServer;
+    this.superProjectBranch = superProjectBranch;
+    this.repoManager = repoManager;
+  }
+
+  public List<SubmoduleSubscription> parseAllSections() {
+    List<SubmoduleSubscription> parsedSubscriptions =
+        new ArrayList<SubmoduleSubscription>();
+    for (final String id : bbc.getSubsections("submodule")) {
+      final SubmoduleSubscription subscription = parse(id);
+      if (subscription != null) {
+        parsedSubscriptions.add(subscription);
+      }
+    }
+    return parsedSubscriptions;
+  }
+
+  private SubmoduleSubscription parse(final String id) {
+    final String url = bbc.getString("submodule", id, "url");
+    final String path = bbc.getString("submodule", id, "path");
+    String branch = bbc.getString("submodule", id, "branch");
+
+    try {
+      if (url != null && url.length() > 0 && path != null && path.length() > 0
+          && branch != null && branch.length() > 0) {
+        // All required fields filled.
+
+        boolean urlIsRelative = url.startsWith("/");
+        String server = null;
+        if (!urlIsRelative) {
+          // It is actually an URI. It could be ssh://localhost/project-a.
+          server = new URI(url).getHost();
+        }
+        if ((urlIsRelative)
+            || (server != null && server.equalsIgnoreCase(thisServer))) {
+          // Subscription really related to this running server.
+          if (branch.equals(".")) {
+            branch = superProjectBranch.get();
+          } else if (!branch.startsWith(Constants.R_REFS)) {
+            branch = Constants.R_HEADS + branch;
+          }
+
+          final String urlExtractedPath = new URI(url).getPath();
+          String projectName = urlExtractedPath;
+          int fromIndex = urlExtractedPath.length() - 1;
+          while (fromIndex > 0) {
+            fromIndex = urlExtractedPath.lastIndexOf('/', fromIndex - 1);
+            projectName = urlExtractedPath.substring(fromIndex + 1);
+
+            if (projectName.endsWith(".git")) {
+              projectName = projectName.substring(0, projectName.length() - 4);
+            }
+
+            if (repoManager.list().contains(new Project.NameKey(projectName))) {
+              return new SubmoduleSubscription(
+                  superProjectBranch,
+                  new Branch.NameKey(new Project.NameKey(projectName), branch),
+                  path);
+            }
+          }
+        }
+      }
+    } catch (URISyntaxException e) {
+      // Error in url syntax (in fact it is uri syntax)
+    }
+
+    return null;
+  }
+}