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# frozen_string_literal: true
module Decidim
# Extending Diffy gem to accomodate the needs of app/cells/decidim/diff_cell.rb
module DiffyExtension
# HtmlFormatter that returns basic html output (no inline highlighting)
# and does not escape HTML tags.
class UnescapedHtmlFormatter < Diffy::HtmlFormatter
# We exclude the tags `del` and `ins` so the diffy styling does not apply.
TAGS = (UserInputScrubber.new.tags.to_a - %w(del ins)).freeze
def to_s
str = wrap_lines(@diff.map { |line| wrap_line(line) })
ActionView::Base.new(ActionView::LookupContext.new(nil), {}, nil).sanitize(str, tags: TAGS)
end
end
# Adding a new method to Diffy::Format so we can pass the
# `:unescaped_html` option when calling Diffy::Diff#to_s.
Diffy::Format.module_eval do
def unescaped_html
UnescapedHtmlFormatter.new(self, options).to_s
end
end
# The private "split" method SplitDiff needs to be overriden to take into
# account the new :unescaped_html format, and the fact that the tags
# <ins> <del> are not there anymore
Diffy::SplitDiff.module_eval do
private
def split
return [split_left, split_right] unless @format == :unescaped_html
[unescaped_split_left, unescaped_split_right]
end
def unescaped_split_left
@diff.gsub(%r{<li class="ins">([\s\S]*?)</li>}, "")
end
def unescaped_split_right
@diff.gsub(%r{<li class="del">([\s\S]*?)</li>}, "")
end
end
end
end
Version data entries
38 entries across 38 versions & 1 rubygems