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 import java.io.UnsupportedEncodingException;
   7 import java.net.URLDecoder;
   8 import java.util.HashMap;
   9 import java.util.Map;
  10
  11 public class Util {
  12
  13     private Util() {
  14     }
  15
  16     public static String formatSafetyNumber(String digits) {
  17         final int partCount = 12;
  18         int partSize = digits.length() / partCount;
  19         StringBuilder f = new StringBuilder(digits.length() + partCount);
  20         for (int i = 0; i < partCount; i++) {
  21             f.append(digits, i * partSize, (i * partSize) + partSize).append(" ");
  22         }
  23         return f.toString();
  24     }
  25
  26     public static Map<String, String> getQueryMap(String query) {
  27         String[] params = query.split("&");
  28         Map<String, String> map = new HashMap<>();
  29         for (String param : params) {
  30             String name = null;
  31             final String[] paramParts = param.split("=");
  32             try {
  33                 name = URLDecoder.decode(paramParts[0], "utf-8");
  34             } catch (UnsupportedEncodingException e) {
  35                 // Impossible
  36             }
  37             String value = null;
  38             try {
  39                 value = URLDecoder.decode(paramParts[1], "utf-8");
  40             } catch (UnsupportedEncodingException e) {
  41                 // Impossible
  42             }
  43             map.put(name, value);
  44         }
  45         return map;
  46     }
  47
  48     public static String join(CharSequence separator, Iterable<? extends CharSequence> list) {
  49         StringBuilder buf = new StringBuilder();
  50         for (CharSequence str : list) {
  51             if (buf.length() > 0) {
  52                 buf.append(separator);
  53             }
  54             buf.append(str);
  55         }
  56
  57         return buf.toString();
  58     }
  59
  60     public static JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
  61         JsonNode node = parent.get(name);
  62         if (node == null) {
  63             throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ", name));
  64         }
  65
  66         return node;
  67     }
  68 }