Simplify encode/decode base64

README.md

@@ -44,6 +44,7 @@ Check out all the resources and all the Java code examples in the [Official Docu
 - [SMS API](#sms-api)
   - [Token authentication](#token-authentication)
   - [Example Request](#example-request)
+- [Other Examples](#other-examples)
 - [Contribute](#contribute)
 
 
@@ -573,6 +574,10 @@ Assert.assertEquals("Message is being sent", response.getData().getJSONObject(0)
 ```
 Also, you can check [integration tests](src/test/java/com/mailjet/client/SendSmsIT.java) how to work with Mailjet client. 
 
+## Other examples
+
+- [AWS Lambda](https://github.com/fouad-j/aws-lambda-java-jetmail)
+
 ## Contribute
 
 Mailjet loves developers. You can be part of this project!

src/main/java/com/mailjet/client/Base64.java

@@ -1,17 +1,9 @@
 package com.mailjet.client;
 
 
-public class Base64 {
-
-    private final static char[] ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();
+import static java.nio.charset.StandardCharsets.UTF_8;
 
-    private static int[] toInt   = new int[128];
-
-    static {
-        for(int i=0; i< ALPHABET.length; i++){
-            toInt[ALPHABET[i]]= i;
-        }
-    }
+public class Base64 {
 
     /**
      * Translates the specified byte array into Base64 string.
@@ -20,26 +12,7 @@ public class Base64 {
      * @return the translated Base64 string (not null)
      */
     public static String encode(byte[] buf){
-        int size = buf.length;
-        char[] ar = new char[((size + 2) / 3) * 4];
-        int a = 0;
-        int i=0;
-        while(i < size){
-            byte b0 = buf[i++];
-            byte b1 = (i < size) ? buf[i++] : 0;
-            byte b2 = (i < size) ? buf[i++] : 0;
-
-            int mask = 0x3F;
-            ar[a++] = ALPHABET[(b0 >> 2) & mask];
-            ar[a++] = ALPHABET[((b0 << 4) | ((b1 & 0xFF) >> 4)) & mask];
-            ar[a++] = ALPHABET[((b1 << 2) | ((b2 & 0xFF) >> 6)) & mask];
-            ar[a++] = ALPHABET[b2 & mask];
-        }
-        switch(size % 3){
-            case 1: ar[--a]  = '=';
-            case 2: ar[--a]  = '=';
-        }
-        return new String(ar);
+        return new String(java.util.Base64.getEncoder().encode(buf), UTF_8);
     }
 
     /**
@@ -49,26 +22,7 @@ public static String encode(byte[] buf){
      * @return the byte array (not null)
      */
     public static byte[] decode(String s){
-        int delta = s.endsWith( "==" ) ? 2 : s.endsWith( "=" ) ? 1 : 0;
-        byte[] buffer = new byte[s.length()*3/4 - delta];
-        int mask = 0xFF;
-        int index = 0;
-        for(int i=0; i< s.length(); i+=4){
-            int c0 = toInt[s.charAt( i )];
-            int c1 = toInt[s.charAt( i + 1)];
-            buffer[index++]= (byte)(((c0 << 2) | (c1 >> 4)) & mask);
-            if(index >= buffer.length){
-                return buffer;
-            }
-            int c2 = toInt[s.charAt( i + 2)];
-            buffer[index++]= (byte)(((c1 << 4) | (c2 >> 2)) & mask);
-            if(index >= buffer.length){
-                return buffer;
-            }
-            int c3 = toInt[s.charAt( i + 3 )];
-            buffer[index++]= (byte)(((c2 << 6) | c3) & mask);
-        }
-        return buffer;
-    } 
+        return java.util.Base64.getDecoder().decode(s);
+    }
 
-}
+}

src/test/java/com/mailjet/client/Base64Test.java

@@ -0,0 +1,30 @@
+package com.mailjet.client;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+
+public class Base64Test extends TestCase {
+    public void test_should_base64_decode_provided_string() {
+        // GIVEN
+        String mock = "dGVzdDp0ZXN0w6lhJCTDoCk9Lyo=";
+
+        // WHEN
+        byte[] result = Base64.decode(mock);
+
+        // THEN
+        Assert.assertEquals("test:testéa$$à)=/*", new String(result));
+    }
+
+    public void test_should_base64_encode_provided_bytes_array() {
+        // GIVEN
+        byte[] mock = "test:testéa$$à)=/*".getBytes(UTF_8);
+
+        // WHEN
+        String result = Base64.encode(mock);
+
+        // THEN
+        Assert.assertEquals("dGVzdDp0ZXN0w6lhJCTDoCk9Lyo=", result);
+    }
+}