1 files changed, 67 insertions, 0 deletions
diff --git a/actionmailer/lib/action_mailer/vendor/tmail/core_extensions.rb b/actionmailer/lib/action_mailer/vendor/tmail/core_extensions.rb
new file mode 100644
index 0000000000..cc24e97778
--- /dev/null
+++ b/actionmailer/lib/action_mailer/vendor/tmail/core_extensions.rb
@@ -0,0 +1,67 @@
+=begin rdoc
+
+= Ruby on Rails Core Extensions
+
+provides .blank?
+
+=end
+unless Object.respond_to?(:blank?) #:nodoc:
+  # Check first to see if we are in a Rails environment, no need to 
+  # define these methods if we are
+  class Object
+    # An object is blank if it's nil, empty, or a whitespace string.
+    # For example, "", "   ", nil, [], and {} are blank.
+    #
+    # This simplifies
+    #   if !address.nil? && !address.empty?
+    # to
+    #   if !address.blank?
+    def blank?
+      if respond_to?(:empty?) && respond_to?(:strip)
+        empty? or strip.empty?
+      elsif respond_to?(:empty?)
+        empty?
+      else
+        !self
+      end
+    end
+  end
+
+  class NilClass #:nodoc:
+    def blank?
+      true
+    end
+  end
+
+  class FalseClass #:nodoc:
+    def blank?
+      true
+    end
+  end
+
+  class TrueClass #:nodoc:
+    def blank?
+      false
+    end
+  end
+
+  class Array #:nodoc:
+    alias_method :blank?, :empty?
+  end
+
+  class Hash #:nodoc:
+    alias_method :blank?, :empty?
+  end
+
+  class String #:nodoc:
+    def blank?
+      empty? || strip.empty?
+    end
+  end
+
+  class Numeric #:nodoc:
+    def blank?
+      false
+    end
+  end
+end
+\ No newline at end of file