init

app/android/java/com/khronos/vulkan_samples/common/Utils.java

@@ -0,0 +1,96 @@
+/* Copyright (c) 2021, Arm Limited and Contributors
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.khronos.vulkan_samples.common;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+public class Utils {
+    /**
+     * A helper to capitalize a string
+     *
+     * @param str The string to be capitalized
+     * @return A capitalized string
+     */
+    public static String capitalize(String str) {
+        return str.substring(0, 1).toUpperCase() + str.substring(1);
+    }
+
+    /**
+     * Convert List of Boolean to primitive boolean array
+     * @param list The list to be converted
+     * @return A primitive boolean array containing the lists values
+     */
+    public static boolean[] toBoolArray(List<Boolean> list) {
+        boolean[] booleans = new boolean[list.size()];
+        for (int i = 0; i < list.size(); i++) {
+            booleans[i] = list.get(i);
+        }
+        return booleans;
+    }
+
+    /**
+     * Convert List of String to String array
+     * @param list The list to be converted
+     * @return A String array containing the lists values
+     */
+    public static String[] toStringArray(List<String> list) {
+        String[] strings = new String[list.size()];
+        for (int i = 0; i < list.size(); i++) {
+            strings[i] = list.get(i);
+        }
+        return strings;
+    }
+
+    /**
+     * Comparator orders with a predefined list
+     */
+    public static class PredefinedOrderComparator implements Comparator<String> {
+        private final List<String> defined_order;
+
+        public PredefinedOrderComparator(String... predefined_order) {
+            defined_order = Collections.unmodifiableList(Arrays.asList(predefined_order));
+        }
+
+        @Override
+        public int compare(String o1, String o2) {
+            // Remove duplicates
+            if (o1.equals(o2)) {
+                return 0;
+            }
+
+            int ret;
+            int o1_order = defined_order.indexOf(o1);
+            int o2_order = defined_order.indexOf(o2);
+
+            //if neither are found in the order list, then do natural sort - string comparison
+            if (o1_order < 0 && o2_order < 0) ret = o1.compareTo(o2);
+
+                //if only one is found in the order list, float it above the other
+            else if (o1_order < 0) ret = 1;
+            else if (o2_order < 0) ret = -1;
+
+                //if both are found in the order list, then do the index comparision
+            else ret = o1_order - o2_order;
+
+            return ret;
+        }
+    }
+}