Merge "Update 2.8.1 release notes with recently merged changes" into stable-2.8
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/DefaultFileExtensionRegistry.java b/gerrit-server/src/main/java/com/google/gerrit/server/DefaultFileExtensionRegistry.java
new file mode 100644
index 0000000..bc41fea
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/DefaultFileExtensionRegistry.java
@@ -0,0 +1,109 @@
+// Copyright (C) 2013 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;
+
+import com.google.common.collect.ImmutableMap;
+
+import eu.medsea.mimeutil.MimeType;
+import eu.medsea.mimeutil.MimeUtil;
+import eu.medsea.mimeutil.detector.MimeDetector;
+
+import java.io.File;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Collection;
+import java.util.Collections;
+
+public class DefaultFileExtensionRegistry extends MimeDetector {
+  private static final MimeType INI = newMimeType("text/x-ini", 2);
+  private static final MimeType PYTHON = newMimeType("text/x-python", 2);
+
+  private static final ImmutableMap<String, MimeType> TYPES =
+    ImmutableMap.<String,MimeType>builder()
+      .put(".gitmodules", INI)
+      .put("project.config", INI)
+      .put("BUCK", PYTHON)
+      .put("defs", newMimeType(PYTHON.toString(), 1))
+      .put("py", newMimeType(PYTHON.toString(), 1))
+      .put("go", newMimeType("text/x-go", 1))
+      .put("cxx", newMimeType("text/x-c++src", 1))
+      .put("hxx", newMimeType("text/x-c++hdr", 1))
+      .build();
+
+  private static MimeType newMimeType(String type, final int specificity) {
+    return new MimeType(type) {
+      private static final long serialVersionUID = 1L;
+
+      @Override
+      public int getSpecificity() {
+        return specificity;
+      }
+    };
+  }
+
+  static {
+    for (MimeType type : TYPES.values()) {
+      MimeUtil.addKnownMimeType(type);
+    }
+  }
+
+  @Override
+  public String getDescription() {
+    return getClass().getName();
+  }
+
+  @Override
+  protected Collection<MimeType> getMimeTypesFileName(String name) {
+    int s = name.lastIndexOf('/');
+    if (s >= 0) {
+      name = name.substring(s + 1);
+    }
+
+    MimeType type = TYPES.get(name);
+    if (type != null) {
+      return Collections.singletonList(type);
+    }
+
+    int d = name.lastIndexOf('.');
+    if (0 < d) {
+      type = TYPES.get(name.substring(d + 1));
+      if (type != null) {
+        return Collections.singletonList(type);
+      }
+    }
+
+    return Collections.emptyList();
+  }
+
+  @Override
+  protected Collection<MimeType> getMimeTypesFile(File file) {
+    return getMimeTypesFileName(file.getName());
+  }
+
+  @Override
+  protected Collection<MimeType> getMimeTypesURL(URL url) {
+    return getMimeTypesFileName(url.getPath());
+  }
+
+  @Override
+  protected Collection<MimeType> getMimeTypesInputStream(InputStream arg0) {
+    return Collections.emptyList();
+  }
+
+  @Override
+  protected Collection<MimeType> getMimeTypesByteArray(byte[] arg0) {
+    return Collections.emptyList();
+  }
+}
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/MimeUtilFileTypeRegistry.java b/gerrit-server/src/main/java/com/google/gerrit/server/MimeUtilFileTypeRegistry.java
index b271d6a..ff46b00 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/MimeUtilFileTypeRegistry.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/MimeUtilFileTypeRegistry.java
@@ -54,13 +54,13 @@
     if (HostPlatform.isWin32()) {
       register("eu.medsea.mimeutil.detector.WindowsRegistryMimeDetector");
     }
+    register(DefaultFileExtensionRegistry.class.getName());
   }
 
   private void register(String name) {
     mimeUtil.registerMimeDetector(name);
   }
 
-
   /**
    * Get specificity of mime types with generic types forced to low values
    *
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/change/PatchSetInserter.java b/gerrit-server/src/main/java/com/google/gerrit/server/change/PatchSetInserter.java
index e4f4f1f..74c358e 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/change/PatchSetInserter.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/change/PatchSetInserter.java
@@ -370,8 +370,7 @@
   public static ChangeKind getChangeKind(MergeUtil.Factory mergeUtilFactory, ProjectState project,
       Repository git, RevCommit prior, RevCommit next) {
     if (!next.getFullMessage().equals(prior.getFullMessage())) {
-      if (next.getTree() == prior.getTree()
-          && prior.getParent(0).equals(next.getParent(0))) {
+      if (next.getTree() == prior.getTree() && isSameParents(prior, next)) {
         return ChangeKind.NO_CODE_CHANGE;
       } else {
         return ChangeKind.REWORK;
@@ -384,7 +383,7 @@
     }
 
     if (next.getTree() == prior.getTree() &&
-       prior.getParent(0).equals(next.getParent(0))) {
+       isSameParents(prior, next)) {
       return ChangeKind.TRIVIAL_REBASE;
     }
 
@@ -409,6 +408,15 @@
     }
   }
 
+  private static boolean isSameParents(RevCommit prior, RevCommit next) {
+    if (prior.getParentCount() != next.getParentCount()) {
+      return false;
+    } else if (prior.getParentCount() == 0) {
+      return true;
+    }
+    return prior.getParent(0).equals(next.getParent(0));
+  }
+
   public class ChangeModifiedException extends InvalidChangeOperationException {
     private static final long serialVersionUID = 1L;