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# frozen_string_literal: true
# This class includes overriding Kernel#format method
# what makes impossible to use it here
# rubocop:disable Style/FormatString
module Gitlab
module GithubImport
class MarkdownText
include Gitlab::EncodingHelper
ISSUE_REF_MATCHER = '%{github_url}/%{import_source}/issues'
PULL_REF_MATCHER = '%{github_url}/%{import_source}/pull'
MEDIA_TYPES = %w[gif jpeg jpg mov mp4 png svg webm].freeze
DOC_TYPES = %w[
csv docx fodg fodp fods fodt gz log md odf odg odp ods
odt pdf pptx tgz txt xls xlsx zip
].freeze
ALL_TYPES = (MEDIA_TYPES + DOC_TYPES).freeze
# On github.com we have base url for docs and CDN url for media.
# On github EE as far as we can know there is no CDN urls and media is placed on base url.
# To no escape the escaping symbol we use single quotes instead of double with interpolation.
# rubocop:disable Style/StringConcatenation
CDN_URL_MATCHER = '(!\[.+\]\(%{github_media_cdn}/\d+/(\w|-)+\.(' + MEDIA_TYPES.join('|') + ')\))'
BASE_URL_MATCHER = '(\[.+\]\(%{github_url}/.+/.+/files/\d+/.+\.(' + ALL_TYPES.join('|') + ')\))'
# rubocop:enable Style/StringConcatenation
class << self
def format(*args)
new(*args).to_s
end
# Links like `https://domain.github.com/<namespace>/<project>/pull/<iid>` needs to be converted
def convert_ref_links(text, project)
matcher_options = { github_url: github_url, import_source: project.import_source }
issue_ref_matcher = ISSUE_REF_MATCHER % matcher_options
pull_ref_matcher = PULL_REF_MATCHER % matcher_options
url_helpers = Rails.application.routes.url_helpers
text.gsub(issue_ref_matcher, url_helpers.project_issues_url(project))
.gsub(pull_ref_matcher, url_helpers.project_merge_requests_url(project))
end
def fetch_attachment_urls(text)
cdn_url_matcher = CDN_URL_MATCHER % { github_media_cdn: Regexp.escape(github_media_cdn) }
doc_url_matcher = BASE_URL_MATCHER % { github_url: Regexp.escape(github_url) }
text.scan(Regexp.new(cdn_url_matcher)).map(&:first) +
text.scan(Regexp.new(doc_url_matcher)).map(&:first)
end
private
def github_media_cdn
'https://user-images.githubusercontent.com'
end
# Returns github domain without slash in the end
def github_url
oauth_config = Gitlab::Auth::OAuth::Provider.config_for('github') || {}
url = oauth_config['url'].presence || 'https://github.com'
url = url.chop if url.end_with?('/')
url
end
end
# text - The Markdown text as a String.
# author - An instance of `Gitlab::GithubImport::Representation::User`
# exists - Boolean that indicates the user exists in the GitLab database.
def initialize(text, author, exists = false)
@text = text.to_s
@author = author
@exists = exists
end
def to_s
# Gitlab::EncodingHelper#clean remove `null` chars from the string
clean(format)
end
private
attr_reader :text, :author, :exists
def format
if author&.login.present? && !exists
"*Created by: #{author.login}*\n\n#{text}"
else
text
end
end
end
end
end
# rubocop:enable Style/FormatString
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