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 com.fasterxml.jackson.databind.JsonNode;
   4
   5 import java.io.InvalidObjectException;
   6
   7 public class Util {
   8
   9     private Util() {
  10     }
  11
  12     public static String formatSafetyNumber(String digits) {
  13         final int partCount = 12;
  14         int partSize = digits.length() / partCount;
  15         StringBuilder f = new StringBuilder(digits.length() + partCount);
  16         for (int i = 0; i < partCount; i++) {
  17             f.append(digits, i * partSize, (i * partSize) + partSize).append(" ");
  18         }
  19         return f.toString();
  20     }
  21
  22     public static String join(CharSequence separator, Iterable<? extends CharSequence> list) {
  23         StringBuilder buf = new StringBuilder();
  24         for (CharSequence str : list) {
  25             if (buf.length() > 0) {
  26                 buf.append(separator);
  27             }
  28             buf.append(str);
  29         }
  30
  31         return buf.toString();
  32     }
  33
  34     public static JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
  35         JsonNode node = parent.get(name);
  36         if (node == null) {
  37             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
  38         }
  39
  40         return node;
  41     }
  42 }