From ea6a050b924759c865156357a44fd86e85fd1f4a Mon Sep 17 00:00:00 2001
From: Kyle <kyle@tyrfingr.is>
Date: Tue, 22 Sep 2015 22:58:58 -0700
Subject: [PATCH] Add Itoa.

---
 lib/lib.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/lib.go b/lib/lib.go
index 9d207ed..104aa65 100644
--- a/lib/lib.go
+++ b/lib/lib.go
@@ -54,3 +54,22 @@ func CheckFatal(err error, format string, a ...interface{}) {
 
 	Err(ExitFailure, err, format, a...)
 }
+
+// Itoa provides cheap integer to fixed-width decimal ASCII.  Give a
+// negative width to avoid zero-padding. Adapted from the 'itoa'
+// function in the log/log.go file in the standard library.
+func Itoa(i int, wid int) string {
+	// Assemble decimal in reverse order.
+	var b [20]byte
+	bp := len(b) - 1
+	for i >= 10 || wid > 1 {
+		wid--
+		q := i / 10
+		b[bp] = byte('0' + i - q*10)
+		bp--
+		i = q
+	}
+	// i < 10
+	b[bp] = byte('0' + i)
+	return string(b[bp:])
+}