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require 'cgi' # unescapeHTML
module Plugin::Mastodon::Parser
def self.dehtmlize(html)
result = html
.gsub(%r!</p><p>!) { "\n\n" }
.gsub(%r!<span class="ellipsis">([^<]*)</span>!) {|s| $1 + "..." }
.gsub(%r!^<p>|</p>|<span class="invisible">[^<]*</span>|</?span[^>]*>!, '')
.gsub(/<br[^>]*>|<p>/) { "\n" }
.gsub(/'/) { "'" }
result
end
def self.dictate_score(html, mentions: [], emojis: [], media_attachments: [], poll: nil)
desc = dehtmlize(html)
score = []
pos = 0
anchor_re = %r|<a(?<attr1>[^>]*) href="(?<url>[^"]*)"(?<attr2>[^>]*)>(?<text>[^<]*)</a>|
appeared_urls = Set.new
while m = anchor_re.match(desc, pos)
anchor_begin = m.begin(0)
anchor_end = m.end(0)
if pos < anchor_begin
score << Plugin::Score::TextNote.new(description: CGI.unescapeHTML(desc[pos...anchor_begin]))
end
url = Diva::URI.new(CGI.unescapeHTML(m["url"]))
if m["text"][0] == '#' || (score.last.to_s[-1] == '#')
score << Plugin::Mastodon::Tag.new(name: CGI.unescapeHTML(m["text"]).sub(/\A#/, ''))
else
account = nil
if mentions.any? { |mention| mention.url == url }
mention = mentions.lazy.select { |mention| mention.url == url }.first
acct = Plugin::Mastodon::Account.regularize_acct_by_domain(mention.url.host, mention.acct)
account = Plugin::Mastodon::Account.findbyacct(acct)
end
if account
score << account
else
link_hash = {
description: CGI.unescapeHTML(m["text"]),
uri: url,
mastodon_link_attr: Hash.new,
}
attrs = m["attr1"] + m["attr2"]
attr_pos = 0
attr_re = %r| (?<name>[^=]+)="(?<value>[^"]*)"|
while m2 = attr_re.match(attrs, attr_pos)
attr_name = m2["name"].to_sym
attr_value = m2["value"]
if [:class, :rel].include? attr_name
link_hash[:mastodon_link_attr][attr_name] = attr_value.split(' ')
else
link_hash[:mastodon_link_attr][attr_name] = attr_value
end
attr_pos = m2.end(0)
end
score << Plugin::Score::HyperLinkNote.new(link_hash)
end
end
appeared_urls << url
pos = anchor_end
end
if pos < desc.size
score << Plugin::Score::TextNote.new(description: CGI.unescapeHTML(desc[pos...desc.size]))
end
# 添付ファイル用のwork around
# TODO: mikutter本体側が添付ファイル用のNoteを用意したらそちらに移行する
media_attachments.reject { |a|
appeared_urls.include?(a.url.to_s) || appeared_urls.include?(a.text_url.to_s)
}.each do |attachment|
url = attachment.url
score <<
Plugin::Score::TextNote.new(description: "\n") <<
Plugin::Score::HyperLinkNote.new(
description: attachment.text_url || url,
uri: url,
reference: Plugin.collect(:photo_filter, url).first
)
end
if poll
y = []
poll.options.each do |opt|
y << '○ %{title}' % {title: opt.title}
end
y << '%{count}票' % {count: poll.votes_count}
if poll.expires_at
y << '%{expire}に終了' % {expire: poll.expires_at.strftime("%Y-%m-%d %H:%M:%S")}
end
score << Plugin::Score::TextNote.new(description: "\n" + y.join("\n"))
end
score = score.flat_map do |note|
if !note.is_a?(Plugin::Score::TextNote)
[note]
else
emoji_score = Enumerator.new{|y|
dictate_emoji(note.description, emojis, y)
}.first.to_a
if emoji_score.size > 0
emoji_score
else
[note]
end
end
end
description = score.inject('') do |acc, note|
desc = note.is_a?(Plugin::Score::HyperLinkNote) ? note.uri.to_s : note.description
acc + desc
end
[description, score]
end
# 与えられたテキスト断片に対し、emojisでEmojiを置換するscoreを返します。
def self.dictate_emoji(text, emojis, yielder)
score = emojis.inject(Array(text)){ |fragments, emoji|
shortcode = ":#{emoji.shortcode}:"
fragments.flat_map{|fragment|
if fragment.is_a?(String)
if fragment === shortcode
[emoji]
else
sub_fragments = fragment.split(shortcode).flat_map{|str|
[str, emoji]
}
sub_fragments.pop unless fragment.end_with?(shortcode)
sub_fragments
end
else
[fragment]
end
}
}.map{|chunk|
if chunk.is_a?(String)
Plugin::Score::TextNote.new(description: chunk)
else
chunk
end
}
if (score.size > 1 || score.size == 1 && !score[0].is_a?(Plugin::Score::TextNote))
yielder << score
end
end
end
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