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
   7 public class Util {
   8
   9     private Util() {
  10     }
  11
  12     public static String getStringIfNotBlank(Optional<String> value) {
  13         String string = value.orNull();
  14         if (string == null || string.isBlank()) {
  15             return null;
  16         }
  17         return string;
  18     }
  19
  20     public static String formatSafetyNumber(String digits) {
  21         final int partCount = 12;
  22         int partSize = digits.length() / partCount;
  23         StringBuilder f = new StringBuilder(digits.length() + partCount);
  24         for (int i = 0; i < partCount; i++) {
  25             f.append(digits, i * partSize, (i * partSize) + partSize).append(" ");
  26         }
  27         return f.toString();
  28     }
  29
  30     public static GroupId decodeGroupId(String groupId) throws GroupIdFormatException {
  31         return GroupId.fromBase64(groupId);
  32     }
  33 }