add percent complete to legacyurdecoder, bump to 1.5.3

README.md

@@ -11,7 +11,7 @@ It contains both the classes to represent a UR, and a UR encoder and decoder to
 Hummingbird is hosted in Maven Central and can be added as a dependency with the following:
 
 ```
-implementation('com.sparrowwallet:hummingbird:1.5.2')
+implementation('com.sparrowwallet:hummingbird:1.5.3')
 ```
 
 ## Usage

build.gradle

@@ -16,7 +16,7 @@ apply plugin: 'com.bmuschko.nexus'
 
 archivesBaseName = 'hummingbird'
 group 'com.sparrowwallet'
-version '1.5.2'
+version '1.5.3'
 
 repositories {
     mavenCentral()

src/main/java/com/sparrowwallet/hummingbird/LegacyURDecoder.java

@@ -27,6 +27,24 @@ public class LegacyURDecoder {
         return true;
     }
 
+    public double getPercentComplete() {
+        if(fragments.isEmpty()) {
+            return 0d;
+        }
+
+        String fragment = fragments.iterator().next();
+        String[] components = fragment.split("/");
+        if(components.length > 3) {
+            int[] sequence = checkAndGetSequence(components[1]);
+            int total = sequence[1];
+            if(total > 0 && fragments.size() <= total) {
+                return (double)fragments.size() / total;
+            }
+        }
+
+        return 1d;
+    }
+
     public static boolean isLegacyURFragment(String fragment) {
         String[] components = fragment.split("/");