X-Git-Url: https://git.nmode.ca/signal-cli/blobdiff_plain/4ab904b88e0b445c5e886fe91add69fb215dd455..a8bbdb54d006f157a009ece0cae5bf72fb636ced:/src/main/java/org/asamk/signal/util/Util.java

diff --git a/src/main/java/org/asamk/signal/util/Util.java b/src/main/java/org/asamk/signal/util/Util.java
index c0efd271..31c6b68e 100644
--- a/src/main/java/org/asamk/signal/util/Util.java
+++ b/src/main/java/org/asamk/signal/util/Util.java
@@ -1,10 +1,71 @@
 package org.asamk.signal.util;
 
-import java.io.File;
-import java.io.IOException;
+import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.PropertyAccessor;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import org.asamk.signal.manager.groups.GroupId;
+import org.asamk.signal.manager.groups.GroupIdFormatException;
+import org.whispersystems.libsignal.util.guava.Optional;
+import org.whispersystems.signalservice.api.push.SignalServiceAddress;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+import java.util.stream.Collectors;
 
 public class Util {
-    public static File createTempFile() throws IOException {
-        return File.createTempFile("signal_tmp_", ".tmp");
+
+    private Util() {
+    }
+
+    public static String getStringIfNotBlank(Optional<String> value) {
+        var string = value.orNull();
+        if (string == null || string.isBlank()) {
+            return null;
+        }
+        return string;
+    }
+
+    public static String dashSeparatedToCamelCaseString(String s) {
+        var parts = s.split("-");
+        return toCamelCaseString(Arrays.asList(parts));
+    }
+
+    private static String toCamelCaseString(List<String> strings) {
+        if (strings.size() == 0) {
+            return "";
+        }
+        return strings.get(0) + strings.stream()
+                .skip(1)
+                .filter(s -> s.length() > 0)
+                .map(s -> Character.toUpperCase(s.charAt(0)) + s.substring(1).toLowerCase(Locale.ROOT))
+                .collect(Collectors.joining());
+    }
+
+    public static String formatSafetyNumber(String digits) {
+        final var partCount = 12;
+        var partSize = digits.length() / partCount;
+        var f = new StringBuilder(digits.length() + partCount);
+        for (var i = 0; i < partCount; i++) {
+            f.append(digits, i * partSize, (i * partSize) + partSize).append(" ");
+        }
+        return f.toString();
+    }
+
+    public static GroupId decodeGroupId(String groupId) throws GroupIdFormatException {
+        return GroupId.fromBase64(groupId);
+    }
+
+    public static String getLegacyIdentifier(final SignalServiceAddress address) {
+        return address.getNumber().or(() -> address.getUuid().get().toString());
+    }
+
+    public static ObjectMapper createJsonObjectMapper() {
+        var objectMapper = new ObjectMapper();
+        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.PUBLIC_ONLY);
+        objectMapper.disable(JsonGenerator.Feature.AUTO_CLOSE_TARGET);
+        return objectMapper;
     }
 }