/*
    * Copyright 2019-2024 The OSHI Project Contributors
    * SPDX-License-Identifier: MIT
    */
   package oshi.util;
   
   import java.time.Instant;
   import java.time.OffsetDateTime;
   import java.time.ZoneOffset;
  import java.util.regex.Pattern;
  
  import oshi.annotation.concurrent.ThreadSafe;
  
  /**
   * General constants used in multiple classes
   */
  @ThreadSafe
  public final class Constants {
  
      /**
       * String to report for unknown information
       */
      public static final String UNKNOWN = "unknown";
  
      /**
       * The Unix Epoch, a default value when WMI DateTime queries return no value.
       */
      public static final OffsetDateTime UNIX_EPOCH = OffsetDateTime.ofInstant(Instant.EPOCH, ZoneOffset.UTC);
  
      public static final Pattern DIGITS = Pattern.compile("\\d+");
  
      /**
       * Everything in this class is static, never instantiate it
       */
      private Constants() {
          throw new AssertionError();
      }
  }