Class: MotionMarkdownItPlugins::Container

Inherits:
Object
  • Object
show all
Extended by:
MarkdownIt::Common::Utils
Defined in:
lib/motion-markdown-it-plugins/container/container.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(md, name, options) ⇒ Container 



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 24

def initialize(md, name, options)
  @options     = options || {}
  @name        = name
  @min_markers = 3
  @marker_str  = @options[:marker] || ':'
  @marker_char = @marker_str.charCodeAt(0)
  @marker_len  = @marker_str.length
  @validate    = @options[:validate] || lambda {|params| validateDefault(params) }
  @render      = @options[:render]   || lambda {|tokens, idx, _options, env, renderer| renderDefault(tokens, idx, _options, env, renderer) }
end

Instance Attribute Details

#render ⇒ Object

Returns the value of attribute render.



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 10

def render
  @render
end

Class Method Details

.init_plugin(md, name, options = {}) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 13

def self.init_plugin(md, name, options = {})
  container_obj = Container.new(md, name, options)
  md.block.ruler.before('fence', "container_#{name}",
      lambda { |state, startLine, endLine, silent| container_obj.container(state, startLine, endLine, silent) },
      {alt: [ '', 'paragraph', 'reference', 'blockquote', 'list' ]})

  md.renderer.rules["container_#{name}_open"]  = container_obj.render
  md.renderer.rules["container_#{name}_close"] = container_obj.render
end

Instance Method Details

#container(state, startLine, endLine, silent) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 52

def container(state, startLine, endLine, silent)
  auto_closed = false
  start       = state.bMarks[startLine] + state.tShift[startLine]
  max         = state.eMarks[startLine]

  # Check out the first character quickly,
  # this should filter out most of non-containers
  return false if (@marker_char != state.src.charCodeAt(start))

  # Check out the rest of the marker string
  pos = start + 1
  while pos <= max
    break if (@marker_str[(pos - start) % @marker_len] != state.src[pos])
    pos += 1
  end

  marker_count = ((pos - start) / @marker_len).floor
  return false if (marker_count < @min_markers)
  pos -= (pos - start) % @marker_len

  markup = state.src.slice(start...pos)
  params = state.src.slice(pos...max)

  return false if (!@validate.call(params))

  # Since start is found, we can report success here in validation mode
  return true if (silent)

  # Search for the end of the block
  nextLine = startLine

  while true
    nextLine += 1
    if (nextLine >= endLine)
      # unclosed block should be autoclosed by end of document.
      # also block seems to be autoclosed by end of parent
      break
    end

    start = state.bMarks[nextLine] + state.tShift[nextLine]
    max   = state.eMarks[nextLine]

    if (start < max && state.sCount[nextLine] < state.blkIndent)
      # non-empty line with negative indent should stop the list:
      # - ```
      #  test
      break
    end

    next if (@marker_char != state.src.charCodeAt(start))

    if (state.sCount[nextLine] - state.blkIndent >= 4)
      # closing fence should be indented less than 4 spaces
      next
    end

    pos = start + 1
    while pos <= max
      break if (@marker_str[(pos - start) % @marker_len] != state.src[pos])
      pos += 1
    end

    # closing code fence must be at least as long as the opening one
    next if (((pos - start).floor / @marker_len) < marker_count)

    # make sure tail has spaces only
    pos -= (pos - start) % @marker_len
    pos  = state.skipSpaces(pos)

    next if (pos < max)

    # found!
    auto_closed = true
    break
  end

  old_parent       = state.parentType
  old_line_max     = state.lineMax
  state.parentType = 'container'

  # this will prevent lazy continuations from ever going past our end marker
  state.lineMax = nextLine

  token        = state.push("container_#{@name}_open", 'div', 1)
  token.markup = markup
  token.block  = true
  token.info   = params
  token.map    = [ startLine, nextLine ]

  state.md.block.tokenize(state, startLine + 1, nextLine)

  token        = state.push("container_#{@name}_close", 'div', -1)
  token.markup = state.src.slice(start...pos)
  token.block  = true

  state.parentType = old_parent
  state.lineMax    = old_line_max
  state.line       = nextLine + (auto_closed ? 1 : 0)

  return true
end

#renderDefault(tokens, idx, _options, env, renderer) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 41

def renderDefault(tokens, idx, _options, env, renderer)

  # add a class to the opening tag
  if (tokens[idx].nesting == 1)
    tokens[idx].attrPush([ 'class', @name ])
  end

  return renderer.renderToken(tokens, idx, _options, env, renderer)
end

#validateDefault(params) ⇒ Object 



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# File 'lib/motion-markdown-it-plugins/container/container.rb', line 36

def validateDefault(params)
  return params.strip.split(' ', 2)[0] == @name
end