Merge pull request #69 from trans/master

Added split filter

lib/liquid/standardfilters.rb

@@ -53,6 +53,11 @@ module Liquid
       wordlist.length > l ? wordlist[0..l].join(" ") + truncate_string : input
     end
 
+    # Split input string into an array of substrings separated by given pattern.
+    def split(input, pattern)
+      input.split(pattern)
+    end
+
     def strip_html(input)
       input.to_s.gsub(/<script.*?<\/script>/, '').gsub(/<.*?>/, '')
     end

test/lib/liquid/standard_filter_test.rb

@@ -39,6 +39,14 @@ class StandardFiltersTest < Test::Unit::TestCase
     assert_equal '1234567890', @filters.truncate('1234567890')
   end
 
+  def test_strip
+    assert_equal ['12','34'], @filters.split('12~34', '~')
+    assert_equal ['A? ',' ,Z'], @filters.split('A? ~ ~ ~ ,Z', '~ ~ ~')
+    assert_equal ['A?Z'], @filters.split('A?Z', '~')
+    # Regexp works although Liquid does not support.
+    assert_equal ['A','Z'], @filters.split('AxZ', /x/)
+  end
+
   def test_escape
     assert_equal '&lt;strong&gt;', @filters.escape('<strong>')
     assert_equal '&lt;strong&gt;', @filters.h('<strong>')