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Diffstat (limited to 'service/java/com/android/server/wifi/util/ArrayUtils.java')
-rw-r--r--service/java/com/android/server/wifi/util/ArrayUtils.java187
1 files changed, 0 insertions, 187 deletions
diff --git a/service/java/com/android/server/wifi/util/ArrayUtils.java b/service/java/com/android/server/wifi/util/ArrayUtils.java
deleted file mode 100644
index 330abc025..000000000
--- a/service/java/com/android/server/wifi/util/ArrayUtils.java
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * Copyright (C) 2019 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 com.android.server.wifi.util;
-
-import android.annotation.Nullable;
-
-import java.util.Collection;
-import java.util.Objects;
-
-/**
- * Copied over from frameworks/base/core/java/com/android/internal/util/ArrayUtils.java
- */
-public class ArrayUtils {
- private ArrayUtils() { /* cannot be instantiated */ }
-
- /**
- * Checks if the beginnings of two byte arrays are equal.
- *
- * @param array1 the first byte array
- * @param array2 the second byte array
- * @param length the number of bytes to check
- * @return true if they're equal, false otherwise
- */
- public static boolean equals(byte[] array1, byte[] array2, int length) {
- if (length < 0) {
- throw new IllegalArgumentException();
- }
-
- if (array1 == array2) {
- return true;
- }
- if (array1 == null || array2 == null || array1.length < length || array2.length < length) {
- return false;
- }
- for (int i = 0; i < length; i++) {
- if (array1[i] != array2[i]) {
- return false;
- }
- }
- return true;
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static boolean isEmpty(@Nullable Collection<?> array) {
- return array == null || array.isEmpty();
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static <T> boolean isEmpty(@Nullable T[] array) {
- return array == null || array.length == 0;
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static boolean isEmpty(@Nullable int[] array) {
- return array == null || array.length == 0;
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static boolean isEmpty(@Nullable long[] array) {
- return array == null || array.length == 0;
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static boolean isEmpty(@Nullable byte[] array) {
- return array == null || array.length == 0;
- }
-
- /**
- * Checks if given array is null or has zero elements.
- */
- public static boolean isEmpty(@Nullable boolean[] array) {
- return array == null || array.length == 0;
- }
-
- /**
- * Length of the given array or 0 if it's null.
- */
- public static int size(@Nullable Object[] array) {
- return array == null ? 0 : array.length;
- }
-
- /**
- * Length of the given collection or 0 if it's null.
- */
- public static int size(@Nullable Collection<?> collection) {
- return collection == null ? 0 : collection.size();
- }
-
- /**
- * Checks that value is present as at least one of the elements of the array.
- *
- * @param array the array to check in
- * @param value the value to check for
- * @return true if the value is present in the array
- */
- public static <T> boolean contains(@Nullable T[] array, T value) {
- return indexOf(array, value) != -1;
- }
-
- /**
- * Checks that value is present as at least one of the elements of the array.
- *
- * @param array the array to check in
- * @param value the value to check for
- * @return true if the value is present in the array
- */
- public static boolean contains(@Nullable int[] array, int value) {
- if (array == null) return false;
- for (int element : array) {
- if (element == value) {
- return true;
- }
- }
- return false;
- }
-
- /**
- * Checks that value is present as at least one of the elements of the array.
- *
- * @param array the array to check in
- * @param value the value to check for
- * @return true if the value is present in the array
- */
- public static boolean contains(@Nullable long[] array, long value) {
- if (array == null) return false;
- for (long element : array) {
- if (element == value) {
- return true;
- }
- }
- return false;
- }
-
- /**
- * Checks that value is present as at least one of the elements of the array.
- *
- * @param array the array to check in
- * @param value the value to check for
- * @return true if the value is present in the array
- */
- public static boolean contains(@Nullable char[] array, char value) {
- if (array == null) return false;
- for (char element : array) {
- if (element == value) {
- return true;
- }
- }
- return false;
- }
-
- /**
- * Return first index of {@code value} in {@code array}, or {@code -1} if
- * not found.
- */
- public static <T> int indexOf(@Nullable T[] array, T value) {
- if (array == null) return -1;
- for (int i = 0; i < array.length; i++) {
- if (Objects.equals(array[i], value)) return i;
- }
- return -1;
- }
-}
-