99 lines
2.7 KiB
Ruby
99 lines
2.7 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class EmojiFormatter
|
|
include RoutingHelper
|
|
|
|
DISALLOWED_BOUNDING_REGEX = /[[:alnum:]:]/.freeze
|
|
|
|
attr_reader :html, :custom_emojis, :options
|
|
|
|
# @param [ActiveSupport::SafeBuffer] html
|
|
# @param [Array<CustomEmoji>] custom_emojis
|
|
# @param [Hash] options
|
|
# @option options [Boolean] :animate
|
|
def initialize(html, custom_emojis, options = {})
|
|
raise ArgumentError unless html.html_safe?
|
|
|
|
@html = html
|
|
@custom_emojis = custom_emojis
|
|
@options = options
|
|
end
|
|
|
|
def to_s
|
|
return html if custom_emojis.empty? || html.blank?
|
|
|
|
i = -1
|
|
tag_open_index = nil
|
|
inside_shortname = false
|
|
shortname_start_index = -1
|
|
invisible_depth = 0
|
|
last_index = 0
|
|
result = ''.dup
|
|
|
|
while i + 1 < html.size
|
|
i += 1
|
|
|
|
if invisible_depth.zero? && inside_shortname && html[i] == ':'
|
|
inside_shortname = false
|
|
shortcode = html[shortname_start_index + 1..i - 1]
|
|
char_after = html[i + 1]
|
|
|
|
next unless (char_after.nil? || !DISALLOWED_BOUNDING_REGEX.match?(char_after)) && (emoji = emoji_map[shortcode])
|
|
|
|
result << html[last_index..shortname_start_index - 1] if shortname_start_index.positive?
|
|
result << image_for_emoji(shortcode, emoji)
|
|
last_index = i + 1
|
|
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] == ':' && (i.zero? || !DISALLOWED_BOUNDING_REGEX.match?(html[i - 1]))
|
|
inside_shortname = true
|
|
shortname_start_index = i
|
|
end
|
|
end
|
|
|
|
result << html[last_index..-1]
|
|
|
|
result.html_safe # rubocop:disable Rails/OutputSafety
|
|
end
|
|
|
|
private
|
|
|
|
def emoji_map
|
|
@emoji_map ||= custom_emojis.each_with_object({}) { |e, h| h[e.shortcode] = [full_asset_url(e.image.url), full_asset_url(e.image.url(:static))] }
|
|
end
|
|
|
|
def count_tag_nesting(tag)
|
|
if tag[1] == '/'
|
|
-1
|
|
elsif tag[-2] == '/'
|
|
0
|
|
else
|
|
1
|
|
end
|
|
end
|
|
|
|
def image_for_emoji(shortcode, emoji)
|
|
original_url, static_url = emoji
|
|
|
|
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
|
|
|
|
def animate?
|
|
@options[:animate]
|
|
end
|
|
end
|