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/*
* Copyright (C) 2016 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.packageinstaller.permission.utils;
import android.text.TextUtils;
import java.util.Objects;
public final class ArrayUtils {
private ArrayUtils() { /* cannot be instantiated */ }
/**
* 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(T[] array, T value) {
return indexOf(array, value) != -1;
}
/**
* Return first index of {@code value} in {@code array}, or {@code -1} if
* not found.
*/
public static <T> int indexOf(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;
}
public static String[] appendString(String[] cur, String val) {
if (cur == null) {
return new String[] { val };
}
final int N = cur.length;
for (int i = 0; i < N; i++) {
if (TextUtils.equals(cur[i], val)) {
return cur;
}
}
String[] ret = new String[N + 1];
System.arraycopy(cur, 0, ret, 0, N);
ret[N] = val;
return ret;
}
}
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