1 files changed, 42 insertions, 0 deletions
diff --git a/lib/bundler/vendor/thor/lib/thor/shell/terminal.rb b/lib/bundler/vendor/thor/lib/thor/shell/terminal.rb
new file mode 100644
index 0000000000..2c60684308
--- /dev/null
+++ b/lib/bundler/vendor/thor/lib/thor/shell/terminal.rb
@@ -0,0 +1,42 @@
+class Bundler::Thor
+  module Shell
+    module Terminal
+      DEFAULT_TERMINAL_WIDTH = 80
+
+      class << self
+        # This code was copied from Rake, available under MIT-LICENSE
+        # Copyright (c) 2003, 2004 Jim Weirich
+        def terminal_width
+          result = if ENV["THOR_COLUMNS"]
+            ENV["THOR_COLUMNS"].to_i
+          else
+            unix? ? dynamic_width : DEFAULT_TERMINAL_WIDTH
+          end
+          result < 10 ? DEFAULT_TERMINAL_WIDTH : result
+        rescue
+          DEFAULT_TERMINAL_WIDTH
+        end
+
+        def unix?
+          RUBY_PLATFORM =~ /(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris)/i
+        end
+
+      private
+
+        # Calculate the dynamic width of the terminal
+        def dynamic_width
+          @dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
+        end
+
+        def dynamic_width_stty
+          `stty size 2>/dev/null`.split[1].to_i
+        end
+
+        def dynamic_width_tput
+          `tput cols 2>/dev/null`.to_i
+        end
+
+      end
+    end
+  end
+end