From a0565d3d8527f7297d64fd936e3ce2ee889e313d Mon Sep 17 00:00:00 2001
From: Richard Schneider <makaretu@gmail.com>
Date: Mon, 30 Apr 2018 14:06:22 +1200
Subject: [PATCH] feat(MultiBase): implement base32z

---
 src/Base32z.cs                      | 25 +++++++++++++++++++++++++
 src/Registry/MultiBaseAlgorithm .cs |  7 ++++---
 test/MultBaseTest.cs                | 20 ++++++++++++++++++++
 3 files changed, 49 insertions(+), 3 deletions(-)
 create mode 100644 src/Base32z.cs

diff --git a/src/Base32z.cs b/src/Base32z.cs
new file mode 100644
index 0000000..b405d7f
--- /dev/null
+++ b/src/Base32z.cs
@@ -0,0 +1,25 @@
+using SimpleBase;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Ipfs
+{
+    /// <summary>
+    ///   Base32 encoding designed to be easier for human use and more compact.
+    /// </summary>
+    /// <remarks>
+    ///   Commonly referred to as 'z-base-32'.
+    /// </remarks>
+    /// <seealso href="https://en.wikipedia.org/wiki/Base32#z-base-32"/>
+    public static class Base32z
+    {
+        static readonly Base32Alphabet alphabet =
+            new Base32Alphabet("ybndrfg8ejkmcpqxot1uwisza345h769");
+
+        /// <summary>
+        ///   The encoder/decoder for z-base-32.
+        /// </summary>
+        public static readonly SimpleBase.Base32 Codec = new SimpleBase.Base32(alphabet);
+    }
+}
diff --git a/src/Registry/MultiBaseAlgorithm .cs b/src/Registry/MultiBaseAlgorithm .cs
index 783ffb2..aa767bd 100644
--- a/src/Registry/MultiBaseAlgorithm .cs	
+++ b/src/Registry/MultiBaseAlgorithm .cs	
@@ -13,7 +13,7 @@ namespace Ipfs.Registry
     ///   the currently defined multi-base algorithms.
     ///   <para>
     ///   These algorithms are supported: base58btc, base58flickr, base64,
-    ///   base64pad, base64url, base16, base32, base32pad, base32hex
+    ///   base64pad, base64url, base16, base32, base32z, base32pad, base32hex
     ///   and base32hexpad.
     ///   </para>
     /// </remarks>
@@ -73,14 +73,15 @@ static MultiBaseAlgorithm()
             Register("BASE32HEXPAD", 'T',
                 bytes => SimpleBase.Base32.ExtendedHex.Encode(bytes, true),
                 s => SimpleBase.Base32.ExtendedHex.Decode(s));
-
+            Register("base32z", 'h',
+                bytes => Base32z.Codec.Encode(bytes, false),
+                s => Base32z.Codec.Decode(s));
             // Not supported
 #if false
             Register("base1", '1');
             Register("base2", '0');
             Register("base8", '7');
             Register("base10", '9');
-            Register("base32z", 'h');
 #endif
         }
 
diff --git a/test/MultBaseTest.cs b/test/MultBaseTest.cs
index 55dab02..367c0a7 100644
--- a/test/MultBaseTest.cs
+++ b/test/MultBaseTest.cs
@@ -160,6 +160,26 @@ class TestVector
                 Input = "f",
                 Output = "TCO======"
             },
+            new TestVector {
+                Algorithm = "base32z",
+                Input="Decentralize everything!!",
+                Output ="het1sg3mqqt3gn5djxj11y3msci3817depfzgqejb"
+            },
+            new TestVector {
+                Algorithm = "base32z",
+                Input ="yes mani !",
+                Output ="hxf1zgedpcfzg1ebb"
+            },
+            new TestVector {
+                Algorithm = "base32z",
+                Input ="hello world",
+                Output ="hpb1sa5dxrb5s6hucco"
+            },
+            new TestVector {
+                Algorithm = "base32z",
+                Input ="\x00\x00yes mani !",
+                Output ="hyyy813murbssn5ujryoo"
+            },
 
         };