gitlab-org--gitlab-foss/lib/gitlab/diff/suggestions_parser.rb

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# frozen_string_literal: true
module Gitlab
module Diff
class SuggestionsParser
# Matches for instance "-1", "+1" or "-1+2".
SUGGESTION_CONTEXT = /^(\-(?<above>\d+))?(\+(?<below>\d+))?$/.freeze
CSS = 'pre.language-suggestion'
XPATH = Gitlab::Utils::Nokogiri.css_to_xpath(CSS).freeze
class << self
# Returns an array of Gitlab::Diff::Suggestion which represents each
# suggestion in the given text.
#
def parse(text, position:, project:, supports_suggestion: true)
return [] unless position.complete?
html = Banzai.render(text, project: nil,
no_original_data: true,
suggestions_filter_enabled: supports_suggestion)
doc = Nokogiri::HTML(html)
suggestion_nodes = doc.xpath(XPATH)
return [] if suggestion_nodes.empty?
diff_file = position.diff_file(project.repository)
suggestion_nodes.map do |node|
lang_param = node['data-lang-params']
lines_above, lines_below = nil
if lang_param && suggestion_params = fetch_suggestion_params(lang_param)
lines_above = suggestion_params[:above]
lines_below = suggestion_params[:below]
end
Gitlab::Diff::Suggestion.new(node.text,
line: position.new_line,
above: lines_above.to_i,
below: lines_below.to_i,
diff_file: diff_file)
end
end
private
def fetch_suggestion_params(lang_param)
lang_param.match(SUGGESTION_CONTEXT)
end
end
end
end
end