97 lines
3.1 KiB
Java
97 lines
3.1 KiB
Java
/* Copyright (c) 2021, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 the "License";
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.khronos.vulkan_samples.common;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.List;
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public class Utils {
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/**
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* A helper to capitalize a string
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*
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* @param str The string to be capitalized
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* @return A capitalized string
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*/
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public static String capitalize(String str) {
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return str.substring(0, 1).toUpperCase() + str.substring(1);
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}
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/**
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* Convert List of Boolean to primitive boolean array
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* @param list The list to be converted
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* @return A primitive boolean array containing the lists values
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*/
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public static boolean[] toBoolArray(List<Boolean> list) {
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boolean[] booleans = new boolean[list.size()];
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for (int i = 0; i < list.size(); i++) {
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booleans[i] = list.get(i);
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}
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return booleans;
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}
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/**
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* Convert List of String to String array
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* @param list The list to be converted
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* @return A String array containing the lists values
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*/
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public static String[] toStringArray(List<String> list) {
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String[] strings = new String[list.size()];
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for (int i = 0; i < list.size(); i++) {
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strings[i] = list.get(i);
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}
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return strings;
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}
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/**
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* Comparator orders with a predefined list
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*/
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public static class PredefinedOrderComparator implements Comparator<String> {
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private final List<String> defined_order;
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public PredefinedOrderComparator(String... predefined_order) {
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defined_order = Collections.unmodifiableList(Arrays.asList(predefined_order));
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}
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@Override
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public int compare(String o1, String o2) {
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// Remove duplicates
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if (o1.equals(o2)) {
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return 0;
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}
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int ret;
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int o1_order = defined_order.indexOf(o1);
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int o2_order = defined_order.indexOf(o2);
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//if neither are found in the order list, then do natural sort - string comparison
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if (o1_order < 0 && o2_order < 0) ret = o1.compareTo(o2);
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//if only one is found in the order list, float it above the other
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else if (o1_order < 0) ret = 1;
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else if (o2_order < 0) ret = -1;
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//if both are found in the order list, then do the index comparision
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else ret = o1_order - o2_order;
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return ret;
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}
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}
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}
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