From 82482f4787e61bfb5a9dd0551b8941aef25b9ff0 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Mon, 16 Jul 2018 09:54:37 +0200
Subject: [PATCH] Add support for self-extracting `.exe` archives.

---
 Library/Homebrew/cask/lib/hbc/container.rb        |  2 ++
 .../hbc/container/self_extracting_executable.rb   | 15 +++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 Library/Homebrew/cask/lib/hbc/container/self_extracting_executable.rb

diff --git a/Library/Homebrew/cask/lib/hbc/container.rb b/Library/Homebrew/cask/lib/hbc/container.rb
index cae8ea5fb8..cce04afd81 100644
--- a/Library/Homebrew/cask/lib/hbc/container.rb
+++ b/Library/Homebrew/cask/lib/hbc/container.rb
@@ -6,6 +6,7 @@ require "hbc/container/bzip2"
 require "hbc/container/cab"
 require "hbc/container/criteria"
 require "hbc/container/dmg"
+require "hbc/container/self_extracting_executable"
 require "hbc/container/executable"
 require "hbc/container/generic_unar"
 require "hbc/container/gpg"
@@ -32,6 +33,7 @@ module Hbc
         Ttf,
         Otf,
         Air,
+        SelfExtractingExecutable,
         Cab,
         Dmg,
         SevenZip,
diff --git a/Library/Homebrew/cask/lib/hbc/container/self_extracting_executable.rb b/Library/Homebrew/cask/lib/hbc/container/self_extracting_executable.rb
new file mode 100644
index 0000000000..e620c510d3
--- /dev/null
+++ b/Library/Homebrew/cask/lib/hbc/container/self_extracting_executable.rb
@@ -0,0 +1,15 @@
+require "hbc/container/generic_unar"
+
+module Hbc
+  class Container
+    class SelfExtractingExecutable < GenericUnar
+      def self.can_extract?(path:, magic_number:)
+        return false unless magic_number.match?(/\AMZ/n)
+
+        SystemCommand.run("file",
+                          args: [path],
+                          print_stderr: false).stdout.include?("self-extracting")
+      end
+    end
+  end
+end