From 7e9a23df22f516d150064d7aa2a3c22293937f98 Mon Sep 17 00:00:00 2001
From: Kevin Atkinson <k@kevina.org>
Date: Thu, 5 Jan 2017 22:20:38 -0500
Subject: [PATCH] Add simple utility to convert from one base to another.

---
 multibase-conv/main.go | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 multibase-conv/main.go

diff --git a/multibase-conv/main.go b/multibase-conv/main.go
new file mode 100644
index 0000000..95b1d48
--- /dev/null
+++ b/multibase-conv/main.go
@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	
+	multibase "github.com/multiformats/go-multibase"
+)
+
+func main() {
+	if len(os.Args) != 3 {
+		fmt.Printf("usage: %s CID NEW-BASE\n", os.Args[0])
+		os.Exit(1)
+	}
+
+	cid := os.Args[1]
+	newBase := os.Args[2]
+
+	_, data, err := multibase.Decode(cid)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+
+	newCid, err := multibase.Encode(multibase.Encoding(newBase[0]), data)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "%v\n", err)
+		os.Exit(1)
+	}
+
+	fmt.Printf("%s\n", newCid)
+}