Class: MarkdownIt::RulesCore::Linkify

Inherits:
Object
  • Object
show all
Defined in:
lib/motion-markdown-it/rules_core/linkify.rb

Class Method Summary collapse

Class Method Details

.isLinkClose(str) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_core/linkify.rb', line 13

def self.isLinkClose(str)
  return !(/^<\/a\s*>/i =~ str).nil?
end

.isLinkOpen(str) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_core/linkify.rb', line 10

def self.isLinkOpen(str)
  return !(/^<a[>\s]/i =~ str).nil?
end

.linkify(state) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_core/linkify.rb', line 18

def self.linkify(state)
  blockTokens = state.tokens

    return if (!state.md.options[:linkify])

    (0...blockTokens.length).each do |j|
      if (blockTokens[j].type != 'inline' || !state.md.linkify.pretest(blockTokens[j].content))
        next
      end

      tokens = blockTokens[j].children

      htmlLinkLevel = 0

      # We scan from the end, to keep position when new tags added.
      # Use reversed logic in links start/end match
      i = tokens.length - 1
      while i >= 0
        currentToken = tokens[i]

        # Skip content of markdown links
        if (currentToken.type == 'link_close')
          i -= 1
          while (tokens[i].level != currentToken.level && tokens[i].type != 'link_open')
            i -= 1
          end
          next
        end

        # Skip content of html tag links
        if (currentToken.type == 'html_inline')
          if (isLinkOpen(currentToken.content) && htmlLinkLevel > 0)
            htmlLinkLevel -= 1
          end
          if (isLinkClose(currentToken.content))
            htmlLinkLevel -= 1
          end
        end
        next if (htmlLinkLevel > 0)

        if (currentToken.type == 'text' && state.md.linkify =~ currentToken.content)

          text = currentToken.content
          links = state.md.linkify.match(text)

          # Now split string to nodes
          nodes   = []
          level   = currentToken.level
          lastPos = 0
          
          (0...links.length).each do |ln|
            url = links[ln].url
            fullUrl = state.md.normalizeLink.call(url)
            next if (!state.md.validateLink.call(fullUrl))

            urlText = links[ln].text

            # Linkifier might send raw hostnames like "example.com", where url
            # starts with domain name. So we prepend http:// in those cases,
            # and remove it afterwards.
            #

# TODO work on this when clearer
puts "Linkify requires work"
            # if (!links[ln].schema)
            #   urlText = state.md.normalizeLinkText.call('http://' + urlText).replace(/^http:\/\//, '')
            # elsif (links[ln].schema == 'mailto:' && !Regexp.new('^mailto:/i') =~ urlText)
            #   urlText = state.md.normalizeLinkText.call('mailto:' + urlText).replace(/^mailto:/, '');
            # } else {
            #   urlText = state.md.normalizeLinkText.call(urlText);
            # }

            pos = links[ln].index

            if (pos > lastPos)
              token         = Token.new('text', '', 0)
              token.content = text.slice(lastPos...pos)
              token.level   = level
              nodes.push(token)
            end

            token         = Token.new('link_open', 'a', 1)
            token.attrs   = [ [ 'href', fullUrl ] ]
            token.level   = level
            level        += 1
            token.markup  = 'linkify'
            token.info    = 'auto'
            nodes.push(token)

            token         = Token.new('text', '', 0)
            token.content = urlText
            token.level   = level
            nodes.push(token)

            token         = Token.new('link_close', 'a', -1)
            level        -= 1
            token.level   = level
            token.markup  = 'linkify'
            token.info    = 'auto'
            nodes.push(token)

            lastPos = links[ln].lastIndex
          end
          if (lastPos < text.length)
            token         = Token.new('text', '', 0)
            token.content = text.slice_to_end(lastPos)
            token.level   = level
            nodes.push(token)
          end

          # replace current node
          blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes)
        end
        i -= 1
      end
    end
end