init.rb lib/dryopteris/rails_extension.rb @@ -9,11 +9,17 @@ module Dryopteris class << self def strip_tags(string_or_io, encoding=nil) + return nil if string_or_io.nil? + return "" if string_or_io.strip.size == 0 + doc = Nokogiri::HTML.parse(string_or_io, nil, encoding) doc.text end def sanitize(string_or_io, encoding=nil) + return nil if string_or_io.nil? + return "" if string_or_io.strip.size == 0 + doc = Nokogiri::HTML.parse(string_or_io, nil, encoding) doc.xpath("html/body/*").each do |node| traverse_conditionally_top_down(node, self.method(:sanitize_node).to_proc) lib/dryopteris/sanitize.rb @@ -2,6 +2,14 @@ require File.expand_path(File.join(File.dirname(__FILE__), 'helper')) class TestBasic < Test::Unit::TestCase + def test_nil + assert_nil Dryopteris.sanitize(nil) + end + + def test_empty_string + assert_equal Dryopteris.sanitize(""), "" + end + def test_removal_of_illegal_tag html = <<-HTML following this there should be no jim tag test/test_basic.rb @@ -2,12 +2,20 @@ require File.expand_path(File.join(File.dirname(__FILE__), 'helper')) class TestBasic < Test::Unit::TestCase + def test_nil + assert_nil Dryopteris.strip_tags(nil) + end + + def test_empty_string + assert_equal Dryopteris.strip_tags(""), "" + end + def test_removal_of_all_tags html = <<-HTML What's up <strong>doc</strong>? HTML - sane = Dryopteris.strip_tags(html) - assert_equal "What's up doc?".strip, sane.strip + stripped = Dryopteris.strip_tags(html) + assert_equal "What's up doc?".strip, stripped.strip end end \ No newline at end of file test/test_strip_tags.rb 2783dc7950916ec43e6bdb6524fd38c0486ec258 Bryan Helmkamp bryan@brynary.com http://github.com/brynary/dryopteris/commit/2823a1296e4580763536f7305a003c9ae3544fb8 2823a1296e4580763536f7305a003c9ae3544fb8 2008-12-04T17:19:47-08:00 2008-12-04T16:41:26-08:00 Adding sanitize_fields Rails extension 1195b84af687a732b85ecb106d19f3d369a34085 Bryan Helmkamp bryan@brynary.com