From 72398faeaf717894e2f35c41eed4fd22f4a7f279 Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Fri, 13 Dec 2013 21:17:15 -0800
Subject: [PATCH] core: put shell quoting into its own util class, it is useful

---
 lib/vagrant/util/shell_quote.rb            | 15 +++++++++++++++
 test/unit/vagrant/util/shell_quote_test.rb | 12 ++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 lib/vagrant/util/shell_quote.rb
 create mode 100644 test/unit/vagrant/util/shell_quote_test.rb

diff --git a/lib/vagrant/util/shell_quote.rb b/lib/vagrant/util/shell_quote.rb
new file mode 100644
index 000000000..f3dd39c46
--- /dev/null
+++ b/lib/vagrant/util/shell_quote.rb
@@ -0,0 +1,15 @@
+module Vagrant
+  module Util
+    module ShellQuote
+      # This will auto-escape the text with the given quote mark type.
+      #
+      # @param [String] text Text to escape
+      # @param [String] quote The quote character, such as "
+      def self.escape(text, quote)
+        text.gsub(/#{quote}/) do |m|
+          "#{m}\\#{m}#{m}"
+        end
+      end
+    end
+  end
+end
diff --git a/test/unit/vagrant/util/shell_quote_test.rb b/test/unit/vagrant/util/shell_quote_test.rb
new file mode 100644
index 000000000..eaea27765
--- /dev/null
+++ b/test/unit/vagrant/util/shell_quote_test.rb
@@ -0,0 +1,12 @@
+require File.expand_path("../../../base", __FILE__)
+
+require "vagrant/util/shell_quote"
+
+describe Vagrant::Util::ShellQuote do
+  subject { described_class }
+
+  it "quotes properly" do
+    expected = "foo '\\''bar'\\''"
+    expect(subject.escape("foo 'bar'", "'")).to eql(expected)
+  end
+end