glitchier-soc/app/lib/formatter.rb

293 lines
9.2 KiB
Ruby
Raw Normal View History

# frozen_string_literal: true
require 'singleton'
class Formatter
include Singleton
2016-11-05 16:20:05 +02:00
include RoutingHelper
include ActionView::Helpers::TextHelper
2017-12-06 12:41:57 +02:00
def format(status, **options)
if status.reblog?
prepend_reblog = status.reblog.account.acct
status = status.proper
else
prepend_reblog = false
end
raw_content = status.text
if options[:inline_poll_options] && status.preloadable_poll
raw_content = raw_content + "\n\n" + status.preloadable_poll.options.map { |title| "[ ] #{title}" }.join("\n")
end
return '' if raw_content.blank?
unless status.local?
html = reformat(raw_content)
html = encode_custom_emojis(html, status.emojis, options[:autoplay]) if options[:custom_emojify]
return html.html_safe # rubocop:disable Rails/OutputSafety
end
linkable_accounts = status.active_mentions.map(&:account)
linkable_accounts << status.account
html = raw_content
html = "RT @#{prepend_reblog} #{html}" if prepend_reblog
html = encode_and_link_urls(html, linkable_accounts)
html = encode_custom_emojis(html, status.emojis, options[:autoplay]) if options[:custom_emojify]
html = simple_format(html, {}, sanitize: false)
html = html.delete("\n")
html.html_safe # rubocop:disable Rails/OutputSafety
end
def reformat(html)
sanitize(html, Sanitize::Config::MASTODON_STRICT)
rescue ArgumentError
''
end
2017-03-04 00:45:48 +02:00
def plaintext(status)
return status.text if status.local?
text = status.text.gsub(/(<br \/>|<br>|<\/p>)+/) { |match| "#{match}\n" }
strip_tags(text)
2017-03-04 00:45:48 +02:00
end
def simplified_format(account, **options)
html = account.local? ? linkify(account.note) : reformat(account.note)
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
html.html_safe # rubocop:disable Rails/OutputSafety
end
def sanitize(html, config)
Sanitize.fragment(html, config)
end
def format_spoiler(status, **options)
html = encode(status.spoiler_text)
html = encode_custom_emojis(html, status.emojis, options[:autoplay])
html.html_safe # rubocop:disable Rails/OutputSafety
end
def format_poll_option(status, option, **options)
html = encode(option.title)
html = encode_custom_emojis(html, status.emojis, options[:autoplay])
html.html_safe # rubocop:disable Rails/OutputSafety
end
def format_display_name(account, **options)
html = encode(account.display_name.presence || account.username)
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
html.html_safe # rubocop:disable Rails/OutputSafety
end
def format_field(account, str, **options)
html = account.local? ? encode_and_link_urls(str, me: true, with_domain: true) : reformat(str)
html = encode_custom_emojis(html, account.emojis, options[:autoplay]) if options[:custom_emojify]
html.html_safe # rubocop:disable Rails/OutputSafety
end
def linkify(text)
html = encode_and_link_urls(text)
html = simple_format(html, {}, sanitize: false)
html = html.delete("\n")
html.html_safe # rubocop:disable Rails/OutputSafety
end
private
def html_entities
@html_entities ||= HTMLEntities.new
end
def encode(html)
html_entities.encode(html)
end
def encode_and_link_urls(html, accounts = nil, options = {})
entities = utf8_friendly_extractor(html, extract_url_without_protocol: false)
if accounts.is_a?(Hash)
options = accounts
accounts = nil
end
rewrite(html.dup, entities) do |entity|
if entity[:url]
link_to_url(entity, options)
elsif entity[:hashtag]
link_to_hashtag(entity)
elsif entity[:screen_name]
link_to_mention(entity, accounts, options)
end
end
end
def count_tag_nesting(tag)
if tag[1] == '/' then -1
elsif tag[-2] == '/' then 0
else 1
end
end
# rubocop:disable Metrics/BlockNesting
def encode_custom_emojis(html, emojis, animate = false)
return html if emojis.empty?
emoji_map = emojis.each_with_object({}) { |e, h| h[e.shortcode] = [full_asset_url(e.image.url), full_asset_url(e.image.url(:static))] }
i = -1
tag_open_index = nil
inside_shortname = false
shortname_start_index = -1
invisible_depth = 0
while i + 1 < html.size
i += 1
if invisible_depth.zero? && inside_shortname && html[i] == ':'
shortcode = html[shortname_start_index + 1..i - 1]
emoji = emoji_map[shortcode]
if emoji
original_url, static_url = emoji
replacement = begin
if animate
image_tag(original_url, draggable: false, class: 'emojione', alt: ":#{shortcode}:", title: ":#{shortcode}:")
else
image_tag(original_url, draggable: false, class: 'emojione custom-emoji', alt: ":#{shortcode}:", title: ":#{shortcode}:", data: { original: original_url, static: static_url })
end
end
before_html = shortname_start_index.positive? ? html[0..shortname_start_index - 1] : ''
html = before_html + replacement + html[i + 1..-1]
i += replacement.size - (shortcode.size + 2) - 1
else
i -= 1
end
inside_shortname = false
elsif tag_open_index && html[i] == '>'
tag = html[tag_open_index..i]
tag_open_index = nil
if invisible_depth.positive?
invisible_depth += count_tag_nesting(tag)
elsif tag == '<span class="invisible">'
invisible_depth = 1
end
elsif html[i] == '<'
tag_open_index = i
inside_shortname = false
elsif !tag_open_index && html[i] == ':'
inside_shortname = true
shortname_start_index = i
end
end
html
end
# rubocop:enable Metrics/BlockNesting
def rewrite(text, entities)
text = text.to_s
# Sort by start index
entities = entities.sort_by do |entity|
indices = entity.respond_to?(:indices) ? entity.indices : entity[:indices]
indices.first
end
result = []
last_index = entities.reduce(0) do |index, entity|
indices = entity.respond_to?(:indices) ? entity.indices : entity[:indices]
result << encode(text[index...indices.first])
result << yield(entity)
indices.last
end
result << encode(text[last_index..-1])
result.flatten.join
end
def utf8_friendly_extractor(text, options = {})
# Note: I couldn't obtain list_slug with @user/list-name format
# for mention so this requires additional check
special = Extractor.extract_urls_with_indices(text, options)
standard = Extractor.extract_entities_with_indices(text, options)
2020-01-23 22:27:26 +02:00
extra = Extractor.extract_extra_uris_with_indices(text, options)
2020-01-23 22:27:26 +02:00
Extractor.remove_overlapping_entities(special + standard + extra)
end
def link_to_url(entity, options = {})
url = Addressable::URI.parse(entity[:url])
html_attrs = { target: '_blank', rel: 'nofollow noopener noreferrer' }
html_attrs[:rel] = "me #{html_attrs[:rel]}" if options[:me]
Twitter::TwitterText::Autolink.send(:link_to_text, entity, link_html(entity[:url]), url, html_attrs)
rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
encode(entity[:url])
end
def link_to_mention(entity, linkable_accounts, options = {})
acct = entity[:screen_name]
return link_to_account(acct, options) unless linkable_accounts
same_username_hits = 0
account = nil
username, domain = acct.split('@')
domain = nil if TagManager.instance.local_domain?(domain)
linkable_accounts.each do |item|
same_username = item.username.casecmp(username).zero?
same_domain = item.domain.nil? ? domain.nil? : item.domain.casecmp(domain)&.zero?
if same_username && !same_domain
same_username_hits += 1
elsif same_username && same_domain
account = item
end
end
account ? mention_html(account, with_domain: same_username_hits.positive? || options[:with_domain]) : "@#{encode(acct)}"
end
2017-03-28 15:16:08 +03:00
def link_to_account(acct, options = {})
username, domain = acct.split('@')
domain = nil if TagManager.instance.local_domain?(domain)
account = EntityCache.instance.mention(username, domain)
account ? mention_html(account, with_domain: options[:with_domain]) : "@#{encode(acct)}"
2017-03-28 15:16:08 +03:00
end
def link_to_hashtag(entity)
hashtag_html(entity[:hashtag])
2016-11-04 20:12:59 +02:00
end
def link_html(url)
url = Addressable::URI.parse(url).to_s
prefix = url.match(/\A(https?:\/\/(www\.)?|xmpp:)/).to_s
text = url[prefix.length, 30]
suffix = url[prefix.length + 30..-1]
cutoff = url[prefix.length..-1].length > 30
"<span class=\"invisible\">#{encode(prefix)}</span><span class=\"#{cutoff ? 'ellipsis' : ''}\">#{encode(text)}</span><span class=\"invisible\">#{encode(suffix)}</span>"
end
def hashtag_html(tag)
"<a href=\"#{encode(tag_url(tag))}\" class=\"mention hashtag\" rel=\"tag\">#<span>#{encode(tag)}</span></a>"
2016-11-04 20:12:59 +02:00
end
def mention_html(account, with_domain: false)
"<span class=\"h-card\"><a href=\"#{encode(ActivityPub::TagManager.instance.url_for(account))}\" class=\"u-url mention\">@<span>#{encode(with_domain ? account.pretty_acct : account.username)}</span></a></span>"
end
end