From 145024c6ccc7bff1eda632823702f91899667ed3 Mon Sep 17 00:00:00 2001
From: Alexander Larsson <alexl@redhat.com>
Date: Thu, 12 Sep 2013 15:17:39 +0200
Subject: [PATCH] Utils: Add ShellQuoteArguments

---
 utils/utils.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/utils/utils.go b/utils/utils.go
index d417690c0c..94aa0dc902 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -1021,3 +1021,36 @@ type StatusError struct {
 func (e *StatusError) Error() string {
 	return fmt.Sprintf("Status: %d", e.Status)
 }
+
+func quote(word string, buf *bytes.Buffer) {
+	// Bail out early for "simple" strings
+	if word != "" && !strings.ContainsAny(word, "\\'\"`${[|&;<>()~*?! \t\n") {
+		buf.WriteString(word)
+		return
+	}
+
+	buf.WriteString("''")
+
+	for i := 0; i < len(word); i++ {
+		b := word[i]
+		if b == '\'' {
+			// Replace literal ' with a close ', a \', and a open '
+			buf.WriteString("'\\''")
+		} else {
+			buf.WriteByte(b)
+		}
+	}
+
+	buf.WriteString("''")
+}
+
+func ShellQuoteArguments(args []string) string {
+	var buf bytes.Buffer
+	for i, arg := range args {
+		if i != 0 {
+			buf.WriteByte(' ')
+		}
+		quote(arg, &buf)
+	}
+	return buf.String()
+}