csv lib compat in ruby 1.9.x

fastercsv is not supported in 1.9, instead csv in the stdlib has been
modified to be api compatible with fastercsv. in this first step, we
alias CSV to FasterCSV when running under 1.9. This allows 1.8.7 to
continue working with no changes.

Change-Id: I34c3a9031b6f4946380510e4833203e29a05073a
Reviewed-on: https://gerrit.instructure.com/5835
Tested-by: Hudson <[email protected]>
Reviewed-by: Zach Wily <[email protected]>

Gemfile

@@ -9,7 +9,6 @@ gem 'compass',        '0.11.5'
 gem 'daemons',        '1.1.0'
 gem 'diff-lcs',       '1.1.2',  :require => 'diff/lcs'
 gem 'erubis',         '2.7.0'
-gem 'fastercsv',      '1.5.3'
 gem 'hairtrigger',    '0.1.11'
 gem 'haml',           '3.1.2'
 gem 'hashery',        '1.3.0',  :require => 'hashery/dictionary'
@@ -105,6 +104,10 @@ if WINDOWS
   end
 end
 
+if !ONE_NINE
+  gem 'fastercsv', '1.5.3'
+end
+
 # Non-standard Canvas extension to Bundler behavior -- load the Gemfiles from
 # plugins.
 Dir[File.join(File.dirname(__FILE__),'vendor/plugins/*/Gemfile')].each do |g|

config/initializers/ruby_version_compat.rb

@@ -0,0 +1,7 @@
+# 1.9 has a built-in equivalent to fastercsv
+if RUBY_VERSION > "1.9."
+  require 'csv'
+  FasterCSV = CSV
+else
+  require 'fastercsv'
+end

lib/ext/array.rb

@@ -17,7 +17,6 @@
 #
 
 class Array
-  require "fastercsv"
   def to_csv(options = {})
     if all? { |e| e.respond_to?(:to_row) }
       header_row = first.export_columns(options[:format]).to_csv

lib/gradebook_csv_parser.rb

@@ -17,7 +17,6 @@
 #
 
 # This is used for the GradebookImporter
-require 'fastercsv'
 require 'ostruct'
 
 class CSVParser

lib/sis/csv/import.rb

@@ -16,7 +16,6 @@
 # with this program. If not, see <http://www.gnu.org/licenses/>.
 #
 
-require 'faster_csv'
 require 'zip/zip'
 
 module SIS

lib/tasks/rspec.rake

@@ -1,5 +1,3 @@
-gem 'test-unit', '1.2.3' if RUBY_VERSION.to_f >= 1.9
-
 # Don't load rspec if running "rake gems:*"
 unless ARGV.any? {|a| a =~ /\Agems/}