forked from fedi/mastodon
99 lines
2.6 KiB
Ruby
99 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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require 'singleton'
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class Formatter
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include Singleton
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include RoutingHelper
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include ActionView::Helpers::TextHelper
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include ActionView::Helpers::SanitizeHelper
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def format(status)
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return reformat(status.content) unless status.local?
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html = status.text
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html = encode(html)
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if (status.spoiler?)
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spoilerhtml = status.spoiler_text
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spoilerhtml = encode(spoilerhtml)
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html = wrap_spoilers(html, spoilerhtml)
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else
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html = simple_format(html, sanitize: false)
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end
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html = html.gsub(/\n/, '')
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html = link_urls(html)
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html = link_mentions(html, status.mentions)
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html = link_hashtags(html)
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html.html_safe # rubocop:disable Rails/OutputSafety
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end
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def reformat(html)
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sanitize(html, tags: %w(a br p), attributes: %w(href rel))
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end
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def simplified_format(account)
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return reformat(account.note) unless account.local?
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html = encode(account.note)
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html = link_urls(html)
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html = link_hashtags(html)
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html.html_safe # rubocop:disable Rails/OutputSafety
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end
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private
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def encode(html)
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HTMLEntities.new.encode(html)
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end
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def wrap_spoilers(html, spoilerhtml)
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spoilerhtml = simple_format(spoilerhtml, {class: "spoiler-helper"}, {sanitize: false})
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html = simple_format(html, {class: ["spoiler", "spoiler-on"]}, {sanitize: false})
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spoilerhtml + html
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end
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def link_urls(html)
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html.gsub(URI.regexp(%w(http https))) do |match|
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link_html(match)
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end
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end
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def link_mentions(html, mentions)
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html.gsub(Account::MENTION_RE) do |match|
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acct = Account::MENTION_RE.match(match)[1]
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mention = mentions.find { |item| item.account.acct.casecmp(acct).zero? }
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mention.nil? ? match : mention_html(match, mention.account)
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end
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end
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def link_hashtags(html)
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html.gsub(Tag::HASHTAG_RE) do |match|
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hashtag_html(match)
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end
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end
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def link_html(url)
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prefix = url.match(/\Ahttps?:\/\/(www\.)?/).to_s
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text = url[prefix.length, 30]
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suffix = url[prefix.length + 30..-1]
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"<a rel=\"nofollow noopener\" target=\"_blank\" href=\"#{url}\"><span class=\"invisible\">#{prefix}</span><span class=\"ellipsis\">#{text}</span><span class=\"invisible\">#{suffix}</span></a>"
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end
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def hashtag_html(match)
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prefix, affix = match.split('#')
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"#{prefix}<a href=\"#{tag_url(affix.downcase)}\" class=\"mention hashtag\">#<span>#{affix}</span></a>"
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end
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def mention_html(match, account)
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"#{match.split('@').first}<a href=\"#{TagManager.instance.url_for(account)}\" class=\"h-card u-url p-nickname mention\">@<span>#{account.username}</span></a>"
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end
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end
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