content: /*
   * Copyright (C) 2018 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.internal.util;
  
  import android.annotation.Nullable;
  
  /**
   * Various numeric -> strings conversion.
   *
   * Test:
   atest /android/pi-dev/frameworks/base/core/tests/coretests/src/com/android/internal/util/ParseUtilsTest.java
   */
  public final class ParseUtils {
      private ParseUtils() {
      }
  
      /** Parse a value as a base-10 integer. */
      public static int parseInt(@Nullable String value, int defValue) {
          return parseIntWithBase(value, 10, defValue);
      }
  
      /** Parse a value as an integer of a given base. */
      public static int parseIntWithBase(@Nullable String value, int base, int defValue) {
          if (value == null) {
              return defValue;
          }
          try {
              return Integer.parseInt(value, base);
          } catch (NumberFormatException e) {
              return defValue;
          }
      }
  
      /** Parse a value as a base-10 long. */
      public static long parseLong(@Nullable String value, long defValue) {
          return parseLongWithBase(value, 10, defValue);
      }
  
      /** Parse a value as a long of a given base. */
      public static long parseLongWithBase(@Nullable String value, int base, long defValue) {
          if (value == null) {
              return defValue;
          }
          try {
              return Long.parseLong(value, base);
          } catch (NumberFormatException e) {
              return defValue;
          }
      }
  
      /** Parse a value as a float. */
      public static float parseFloat(@Nullable String value, float defValue) {
          if (value == null) {
              return defValue;
          }
          try {
              return Float.parseFloat(value);
          } catch (NumberFormatException e) {
              return defValue;
          }
      }
  
      /** Parse a value as a double. */
      public static double parseDouble(@Nullable String value, double defValue) {
          if (value == null) {
              return defValue;
          }
          try {
              return Double.parseDouble(value);
          } catch (NumberFormatException e) {
              return defValue;
          }
      }
  
      /** Parse a value as a boolean. */
      public static boolean parseBoolean(@Nullable String value, boolean defValue) {
          if ("true".equals(value)) {
              return true;
          }
          if ("false".equals(value)) {
              return false;
          }
          return parseInt(value, defValue ? 1 : 0) != 0;
      }
  }
  