Class: MarkdownIt::RulesBlock::HtmlBlock

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

Constant Summary collapse

HTML_TAG_OPEN_RE = 
/^<([a-zA-Z][a-zA-Z0-9]{0,14})[\s\/>]/
HTML_TAG_CLOSE_RE = 
/^<\/([a-zA-Z][a-zA-Z0-9]{0,14})[\s>]/

Class Method Summary collapse

Class Method Details

.html_block(state, startLine, endLine, silent) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_block/html_block.rb', line 17

def self.html_block(state, startLine, endLine, silent)
  pos   = state.bMarks[startLine]
  max   = state.eMarks[startLine]
  shift = state.tShift[startLine]

  pos += shift

  return false if !state.md.options[:html]
  return false if shift > 3 || (pos + 2) >= max
  return false if state.src.charCodeAt(pos) != 0x3C    # < 

  ch = state.src.charCodeAt(pos + 1)

  if ch == 0x21 || ch == 0x3F #  ! or ?
    # Directive start / comment start / processing instruction start
    return true if silent

  elsif ch == 0x2F || isLetter(ch)  # /

    # Probably start or end of tag
    if ch == 0x2F   # \
      # closing tag
      match = state.src.slice(pos...max).match(HTML_TAG_CLOSE_RE)
      return false if (!match)
    else
      # opening tag
      match = state.src.slice(pos...max).match(HTML_TAG_OPEN_RE)
      return false if !match
    end

    # Make sure tag name is valid
    return false if HTML_BLOCKS[match[1].downcase] != true
    return true if silent

  else
    return false
  end

  # If we are here - we detected HTML block.
  # Let's roll down till empty line (block end).
  nextLine = startLine + 1
  while nextLine < state.lineMax && !state.isEmpty(nextLine)
    nextLine += 1
  end

  state.line = nextLine

  token         = state.push('html_block', '', 0)
  token.map     = [ startLine, state.line ]
  token.content = state.getLines(startLine, nextLine, 0, true)

  return true
end

.isLetter(ch) ⇒ Object 



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# File 'lib/motion-markdown-it/rules_block/html_block.rb', line 11

def self.isLetter(ch)
  lc = ch | 0x20; # to lower case
  return (lc >= 0x61) && (lc <= 0x7a)  # >= a and <= z
end