Pathname: add Mach-O module

The MachO module contains methods for learning about Mach-O binaries,
and can be used where one might normally shell out to file(1).

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 98618be41..bd0e6154e 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -1,8 +1,11 @@
 require 'pathname'
 require 'bottles'
+require 'mach'
 
 # we enhance pathname to make our code more readable
 class Pathname
+  include MachO
+
   def install *sources
     results = []
     sources.each do |src|
@@ -268,6 +271,10 @@ class Pathname
     end
   end
 
+  def text_executable?
+    %r[#!\s*(/.+)+] === open('r') { |f| f.readline }
+  end
+
   def incremental_hash(hasher)
     incr_hash = hasher.new
     self.open('r') do |f|