Class: ReverseMarkdown::Mapper

Inherits:
Object
  • Object
show all
Defined in:
lib/reverse_markdown/mapper.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts = {}) ⇒ Mapper

Returns a new instance of Mapper.



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# File 'lib/reverse_markdown/mapper.rb', line 8

def initialize(opts={})
  self.log_level   = :info
  self.log_enabled = true
  self.li_counter  = 0
  self.github_style_code_blocks = opts[:github_style_code_blocks] || false
end

Instance Attribute Details

#github_style_code_blocks ⇒ Object

Returns the value of attribute github_style_code_blocks.



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# File 'lib/reverse_markdown/mapper.rb', line 6

def github_style_code_blocks
  @github_style_code_blocks
end

#li_counter ⇒ Object

Returns the value of attribute li_counter.



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# File 'lib/reverse_markdown/mapper.rb', line 5

def li_counter
  @li_counter
end

#log_enabled ⇒ Object

Returns the value of attribute log_enabled.



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# File 'lib/reverse_markdown/mapper.rb', line 4

def log_enabled
  @log_enabled
end

#log_level ⇒ Object

Returns the value of attribute log_level.



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# File 'lib/reverse_markdown/mapper.rb', line 4

def log_level
  @log_level
end

#raise_errors ⇒ Object

Returns the value of attribute raise_errors.



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# File 'lib/reverse_markdown/mapper.rb', line 3

def raise_errors
  @raise_errors
end

Instance Method Details

#process_element(element) ⇒ Object 



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# File 'lib/reverse_markdown/mapper.rb', line 46

def process_element(element)
  output = ''
  if element.text?
    text = process_text(element)
    if output.end_with?(' ') && text.start_with?(' ')
      output << text.lstrip
    else
      output << text
    end
  else
    output << opening(element).to_s

    markdown_chunks = element.children.map { |child| process_element(child) }
    remove_adjacent_whitespace!(markdown_chunks)
    output << markdown_chunks.join

    output << ending(element).to_s
  end
  output
end

#process_root(element) ⇒ Object 



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# File 'lib/reverse_markdown/mapper.rb', line 15

def process_root(element)
  return '' if element.nil?

  markdown = process_element(element)  # recursively process all elements to get full markdown

  # Extract github style code blocks
  extractions = {}
  markdown.gsub!(%r{```.*?```}m) do |match|
    md5 = Digest::MD5.hexdigest(match)
    extractions[md5] = match
    "{code-block-extraction-#{md5}}"
  end

  markdown = markdown.split("\n").map do |line|
    if line.match(/^( {4}|\t)/)
      line
    else
      "#{ '  ' if line.match(/^ {2,3}/) }" +
      normalize_whitespace(line).strip +
      "#{ '  ' if line.match(/ {2}$/) }"
    end
  end.join("\n")

  markdown.gsub!(/\n{3,}/, "\n\n")

  # Insert pre block extractions
  markdown.gsub!(/\{code-block-extraction-([0-9a-f]{32})\}/){ extractions[$1] }

  markdown
end