module PullRequestsHelper

  # 获取diff内容行号
  def diff_line_num content
    content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.nil? ? "" : content.scan(/@@ -(\d+),\d+ \+\d+,\d+ @@/).first.join("").to_i
  end

  # 处理内容
  def diff_content content
    content.gsub!(/.*@@ -\d+,\d+ \+\d+,\d+ @@\n/m,'')
  end

  def get_user_name user_id
    User.find(user_id).try(:login)
  end

end