Class: Cosensee::BracketParser

Inherits:
Object
  • Object
show all
Includes:
LinkEncodable
Defined in:
lib/cosensee/bracket_parser.rb

Overview

parser of Bracket

Constant Summary

Constants included from LinkEncodable

LinkEncodable::UNESCAPED_REGEX

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from LinkEncodable

#encode_link, #make_link

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/cosensee/bracket_parser.rb', line 12

def content
  @content
end

Class Method Details

.parse(content) ⇒ Object 



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# File 'lib/cosensee/bracket_parser.rb', line 8

def self.parse(content)
  new.parse(content)
end

Instance Method Details

#parse(content) ⇒ Object 



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# File 'lib/cosensee/bracket_parser.rb', line 14

def parse(content)
  @content = content

  case content
  in [/\A\z/]
    Node::EmptyBracket.new(content:, raw: '[]')
  in [/\A([ \t]+)\z/]
    Node::BlankBracket.new(content:, blank: Regexp.last_match(1), raw: "[#{Regexp.last_match(0)}]")
  in [/\A\$ (.*)\z/]
    Node::FormulaBracket.new(content:, formula: Regexp.last_match(1), raw: "[#{Regexp.last_match(0)}]")
  in [/\A(.*).icon\z/]
    Node::IconBracket.new(content:, icon_name: Regexp.last_match(1), raw: Regexp.last_match(0))
  in [%r{\A(https://www\.youtube\.com/watch\?v=([^&]+)(&.*)?)\z}]
    Node::YoutubeBracket.new(content:, video_id: Regexp.last_match(2), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https?://[^\s]+)\s+(https?://[^\s\]]*\.(png|jpe?g|gif|svg|webp)(\?[^\s\]]+)?)\z}]
    Node::ImageBracket.new(content:, link: Regexp.last_match(1), src: Regexp.last_match(2), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https?://[^\s\]]*\.(png|jpe?g|gif|svg|webp)(\?[^\s\]]+)?)\s+(https?://[^\s]+)\z}]
    Node::ImageBracket.new(content:, link: Regexp.last_match(4), src: Regexp.last_match(1), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https?://[^\s\]]*\.(png|jpe?g|gif|svg|webp))\z}]
    Node::ImageBracket.new(content:, link: nil, src: Regexp.last_match(1), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https://gyazo.com/([0-9a-f]{32})(?:/raw)?)\z}]
    Node::GyazoImageBracket.new(content:, link: nil, src: Regexp.last_match(1), image_id: Regexp.last_match(2), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https://open.spotify.com/playlist/(\w+))\z}]
    Node::SpotifyPlaylistBracket.new(content:, playlist_id: Regexp.last_match(2), src: Regexp.last_match(1), raw: "[#{Regexp.last_match(0)}]")
  in [%r{\A(https?://[^ \t]*)(\s+(.+))?\z}]
    # match_external_link_precede
    anchor = Regexp.last_match(3) || Regexp.last_match(1)
    link = Regexp.last_match(1)
    raw = "[#{Regexp.last_match(0)}]"
    Node::ExternalLinkBracket.new(content:, link:, anchor:, raw:)
  in [%r{\A((.*\S)\s+)?(https?://[^\s]+)\z}]
    # match_external_link_succeed
    anchor = Regexp.last_match(2) || Regexp.last_match(3)
    link = Regexp.last_match(3)
    raw = "[#{Regexp.last_match(0)}]"
    Node::ExternalLinkBracket.new(content:, link:, anchor:, raw:)
  in [%r{\A([_\*/\-"#%&'\(\)~\|\+<>{},\.]+) (.+)\z}]
    # match_decorate
    deco = Regexp.last_match(1)
    text = Regexp.last_match(2)
    font_size = deco.count('*') > 10 ? 10 : deco.count('*')
    underlined = deco.include?('_')
    deleted = deco.include?('-')
    slanted = deco.include?('/')
    Node::DecorateBracket.new(
      content:,
      font_size:,
      underlined:,
      slanted:,
      deleted:,
      text:,
      raw:
    )
  else
    line_parser = LineParser.new
    parsed = ParsedBracket.new(content:)
               .then { line_parser.parse_url(it) }
    if parsed.single_text? && parsed.content == content
      anchor = parsed.first_content
      link = make_link(anchor)
      raw = raw_string
      Node::InternalLinkBracket.new(content:, link:, anchor:, raw:)
    else
      parsed = parsed.then { line_parser.parse_hashtag(it) }
      Node::TextBracket.new(content: parsed.content, raw: raw_string)
    end
  end
end

#raw_string ⇒ Object 



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# File 'lib/cosensee/bracket_parser.rb', line 83

def raw_string
  "[#{content.map(&:to_s).join}]"
end