1 files changed, 118 insertions, 0 deletions
diff --git a/android/hardware/radio/Utils.java b/android/hardware/radio/Utils.java
new file mode 100644
index 00000000..f1b58974
--- /dev/null
+++ b/android/hardware/radio/Utils.java
@@ -0,0 +1,118 @@
+/**
+ * Copyright (C) 2018 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.hardware.radio;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.os.RemoteException;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+final class Utils {
+    private static final String TAG = "BroadcastRadio.utils";
+
+    static void writeStringMap(@NonNull Parcel dest, @Nullable Map<String, String> map) {
+        if (map == null) {
+            dest.writeInt(0);
+            return;
+        }
+        dest.writeInt(map.size());
+        for (Map.Entry<String, String> entry : map.entrySet()) {
+            dest.writeString(entry.getKey());
+            dest.writeString(entry.getValue());
+        }
+    }
+
+    static @NonNull Map<String, String> readStringMap(@NonNull Parcel in) {
+        int size = in.readInt();
+        Map<String, String> map = new HashMap<>();
+        while (size-- > 0) {
+            String key = in.readString();
+            String value = in.readString();
+            map.put(key, value);
+        }
+        return map;
+    }
+
+    static <T extends Parcelable> void writeSet(@NonNull Parcel dest, @Nullable Set<T> set) {
+        if (set == null) {
+            dest.writeInt(0);
+            return;
+        }
+        dest.writeInt(set.size());
+        set.stream().forEach(elem -> dest.writeTypedObject(elem, 0));
+    }
+
+    static <T> Set<T> createSet(@NonNull Parcel in, Parcelable.Creator<T> c) {
+        int size = in.readInt();
+        Set<T> set = new HashSet<>();
+        while (size-- > 0) {
+            set.add(in.readTypedObject(c));
+        }
+        return set;
+    }
+
+    static void writeIntSet(@NonNull Parcel dest, @Nullable Set<Integer> set) {
+        if (set == null) {
+            dest.writeInt(0);
+            return;
+        }
+        dest.writeInt(set.size());
+        set.stream().forEach(elem -> dest.writeInt(Objects.requireNonNull(elem)));
+    }
+
+    static Set<Integer> createIntSet(@NonNull Parcel in) {
+        return createSet(in, new Parcelable.Creator<Integer>() {
+            public Integer createFromParcel(Parcel in) {
+                return in.readInt();
+            }
+
+            public Integer[] newArray(int size) {
+                return new Integer[size];
+            }
+        });
+    }
+
+    static <T extends Parcelable> void writeTypedCollection(@NonNull Parcel dest,
+            @Nullable Collection<T> coll) {
+        ArrayList<T> list = null;
+        if (coll != null) {
+            if (coll instanceof ArrayList) {
+                list = (ArrayList) coll;
+            } else {
+                list = new ArrayList<>(coll);
+            }
+        }
+        dest.writeTypedList(list);
+    }
+
+    static void close(ICloseHandle handle) {
+        try {
+            handle.close();
+        } catch (RemoteException ex) {
+            ex.rethrowFromSystemServer();
+        }
+    }
+}