Initial merge with upstreamandroid-r-preview-4android-r-preview-3android-r-preview-2

Test: n/a
Bug: 150784654
Change-Id: I6fb223f1bd657a6a3d0be1492f63a7774e21943e

1 files changed, 58 insertions, 0 deletions

diff --git a/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java b/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java
new file mode 100644
index 0000000..973c6bb
--- /dev/null
+++ b/jimfs/src/main/java/com/google/common/jimfs/StandardAttributeProviders.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2013 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.common.jimfs;
+
+import com.google.common.collect.ImmutableMap;
+import org.checkerframework.checker.nullness.compatqual.NullableDecl;
+
+/**
+ * Static registry of {@link AttributeProvider} implementations for the standard set of file
+ * attribute views Jimfs supports.
+ *
+ * @author Colin Decker
+ */
+final class StandardAttributeProviders {
+
+  private StandardAttributeProviders() {}
+
+  private static final ImmutableMap<String, AttributeProvider> PROVIDERS =
+      new ImmutableMap.Builder<String, AttributeProvider>()
+          .put("basic", new BasicAttributeProvider())
+          .put("owner", new OwnerAttributeProvider())
+          .put("posix", new PosixAttributeProvider())
+          .put("dos", new DosAttributeProvider())
+          .put("acl", new AclAttributeProvider())
+          .put("user", new UserDefinedAttributeProvider())
+          .build();
+
+  /**
+   * Returns the attribute provider for the given view, or {@code null} if the given view is not one
+   * of the attribute views this supports.
+   */
+  @NullableDecl
+  public static AttributeProvider get(String view) {
+    AttributeProvider provider = PROVIDERS.get(view);
+
+    if (provider == null && view.equals("unix")) {
+      // create a new UnixAttributeProvider per file system, as it does some caching that should be
+      // cleaned up when the file system is garbage collected
+      return new UnixAttributeProvider();
+    }
+
+    return provider;
+  }
+}