1 /* 2 * Copyright (C) 2017 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 15 package com.google.android.apps.common.testing.accessibility.framework.replacements; 16 17 import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf; 18 import org.checkerframework.checker.nullness.qual.Nullable; 19 20 /** Used as a local replacement for Android's {@link android.text.TextUtils} */ 21 public class TextUtils { TextUtils()22 private TextUtils() { 23 // Not instantiable 24 } 25 26 /** 27 * @see android.text.TextUtils#isEmpty(CharSequence) 28 */ 29 @EnsuresNonNullIf(expression = "#1", result = false) isEmpty(@ullable CharSequence str)30 public static boolean isEmpty(@Nullable CharSequence str) { 31 return (str == null) || (str.length() == 0); 32 } 33 34 /** See {@link android.text.TextUtils#getTrimmedLength(CharSequence)}. */ getTrimmedLength(CharSequence str)35 public static int getTrimmedLength(CharSequence str) { 36 return str.toString().trim().length(); 37 } 38 39 /** See {@link android.text.TextUtils#equals(CharSequence, CharSequence)}. */ equals(@ullable CharSequence s1, @Nullable CharSequence s2)40 public static boolean equals(@Nullable CharSequence s1, @Nullable CharSequence s2) { 41 if (s1 == s2) { 42 return true; 43 } 44 45 if ((s1 != null) && (s2 != null) && (s1.length() == s2.length())) { 46 if (s1 instanceof String && s2 instanceof String) { 47 return ((String) s1).equals((String) s2); 48 } else { 49 for (int i = 0; i < s1.length(); i++) { 50 if (s1.charAt(i) != s2.charAt(i)) { 51 return false; 52 } 53 } 54 return true; 55 } 56 } 57 return false; 58 } 59 } 60