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# frozen_string_literal: true
module Gitlab
module GithubImport
module Markdown
class Attachment
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
class << self
# markdown_node - CommonMarker::Node
def from_markdown(markdown_node)
case markdown_node.type
when :html, :inline_html
from_inline_html(markdown_node)
when :image
from_markdown_image(markdown_node)
when :link
from_markdown_link(markdown_node)
end
end
private
def from_markdown_image(markdown_node)
url = markdown_node.url
return unless github_url?(url, media: true)
return unless whitelisted_type?(url, media: true)
new(markdown_node.to_plaintext.strip, url)
end
def from_markdown_link(markdown_node)
url = markdown_node.url
return unless github_url?(url, docs: true)
return unless whitelisted_type?(url, docs: true)
new(markdown_node.to_plaintext.strip, url)
end
def from_inline_html(markdown_node)
img = Nokogiri::HTML.parse(markdown_node.string_content).xpath('//img')[0]
return unless img
return unless github_url?(img[:src], media: true)
return unless whitelisted_type?(img[:src], media: true)
new(img[:alt], img[:src])
end
def github_url?(url, docs: false, media: false)
if media
url.start_with?(::Gitlab::GithubImport::MarkdownText::GITHUB_MEDIA_CDN)
elsif docs
url.start_with?(::Gitlab::GithubImport::MarkdownText.github_url)
end
end
def whitelisted_type?(url, docs: false, media: false)
if media
MEDIA_TYPES.any? { |type| url.end_with?(type) }
elsif docs
DOC_TYPES.any? { |type| url.end_with?(type) }
end
end
end
attr_reader :name, :url
def initialize(name, url)
@name = name
@url = url
end
def inspect
"<#{self.class.name}: { name: #{name}, url: #{url} }>"
end
end
end
end
end
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