1 files changed, 126 insertions, 0 deletions
diff --git a/framework/java/android/bluetooth/le/Utils.java b/framework/java/android/bluetooth/le/Utils.java
new file mode 100644
index 0000000000..8598dd7772
--- /dev/null
+++ b/framework/java/android/bluetooth/le/Utils.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2014 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 android.bluetooth.le;
+
+import android.util.SparseArray;
+
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * Helper class for Bluetooth LE utils.
+ *
+ * @hide
+ */
+public class Utils {
+
+    /**
+     * Returns a string composed from a {@link SparseArray}.
+     */
+    static String toString(SparseArray<byte[]> array) {
+        if (array == null) {
+            return "null";
+        }
+        if (array.size() == 0) {
+            return "{}";
+        }
+        StringBuilder buffer = new StringBuilder();
+        buffer.append('{');
+        for (int i = 0; i < array.size(); ++i) {
+            buffer.append(array.keyAt(i)).append("=").append(array.valueAt(i));
+        }
+        buffer.append('}');
+        return buffer.toString();
+    }
+
+    /**
+     * Returns a string composed from a {@link Map}.
+     */
+    static <T> String toString(Map<T, byte[]> map) {
+        if (map == null) {
+            return "null";
+        }
+        if (map.isEmpty()) {
+            return "{}";
+        }
+        StringBuilder buffer = new StringBuilder();
+        buffer.append('{');
+        Iterator<Map.Entry<T, byte[]>> it = map.entrySet().iterator();
+        while (it.hasNext()) {
+            Map.Entry<T, byte[]> entry = it.next();
+            Object key = entry.getKey();
+            buffer.append(key).append("=").append(Arrays.toString(map.get(key)));
+            if (it.hasNext()) {
+                buffer.append(", ");
+            }
+        }
+        buffer.append('}');
+        return buffer.toString();
+    }
+
+    /**
+     * Check whether two {@link SparseArray} equal.
+     */
+    static boolean equals(SparseArray<byte[]> array, SparseArray<byte[]> otherArray) {
+        if (array == otherArray) {
+            return true;
+        }
+        if (array == null || otherArray == null) {
+            return false;
+        }
+        if (array.size() != otherArray.size()) {
+            return false;
+        }
+
+        // Keys are guaranteed in ascending order when indices are in ascending order.
+        for (int i = 0; i < array.size(); ++i) {
+            if (array.keyAt(i) != otherArray.keyAt(i) ||
+                    !Arrays.equals(array.valueAt(i), otherArray.valueAt(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Check whether two {@link Map} equal.
+     */
+    static <T> boolean equals(Map<T, byte[]> map, Map<T, byte[]> otherMap) {
+        if (map == otherMap) {
+            return true;
+        }
+        if (map == null || otherMap == null) {
+            return false;
+        }
+        if (map.size() != otherMap.size()) {
+            return false;
+        }
+        Set<T> keys = map.keySet();
+        if (!keys.equals(otherMap.keySet())) {
+            return false;
+        }
+        for (T key : keys) {
+            if (!Objects.deepEquals(map.get(key), otherMap.get(key))) {
+                return false;
+            }
+        }
+        return true;
+    }
+}