nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/util/Util.java

   1 package org.asamk.signal.util;
   2
   3 import org.asamk.signal.manager.groups.GroupId;
   4 import org.asamk.signal.manager.groups.GroupIdFormatException;
   5 import org.whispersystems.libsignal.util.guava.Optional;
   6 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
   7
   8 public class Util {
   9
  10     private Util() {
  11     }
  12
  13     public static String getStringIfNotBlank(Optional<String> value) {
  14         var string = value.orNull();
  15         if (string == null || string.isBlank()) {
  16             return null;
  17         }
  18         return string;
  19     }
  20
  21     public static String formatSafetyNumber(String digits) {
  22         final var partCount = 12;
  23         var partSize = digits.length() / partCount;
  24         var f = new StringBuilder(digits.length() + partCount);
  25         for (var i = 0; i < partCount; i++) {
  26             f.append(digits, i * partSize, (i * partSize) + partSize).append(" ");
  27         }
  28         return f.toString();
  29     }
  30
  31     public static GroupId decodeGroupId(String groupId) throws GroupIdFormatException {
  32         return GroupId.fromBase64(groupId);
  33     }
  34
  35     public static String getLegacyIdentifier(final SignalServiceAddress address) {
  36         return address.getNumber().or(() -> address.getUuid().get().toString());
  37     }
  38 }