Add popen wrapper that does not invoke the shell

1 files changed, 20 insertions, 0 deletions

diff --git a/Library/Homebrew/utils/popen.rb b/Library/Homebrew/utils/popen.rb
new file mode 100644
index 000000000..83f140163
--- /dev/null
+++ b/Library/Homebrew/utils/popen.rb
@@ -0,0 +1,20 @@
+module Utils
+  def self.popen_read(*args, &block)
+    popen(args, "rb", &block)
+  end
+
+  def self.popen_write(*args, &block)
+    popen(args, "wb", &block)
+  end
+
+  def self.popen(args, mode)
+    IO.popen("-", mode) do |pipe|
+      if pipe
+        yield pipe
+      else
+        STDERR.reopen("/dev/null", "w")
+        exec(*args)
+      end
+    end
+  end
+end