Module: PandocFilter

Defined in:
lib/pandoc-filter.rb

Class Method Summary collapse

Class Method Details

.filter(&block) ⇒ Object 



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# File 'lib/pandoc-filter.rb', line 11

def self.filter(&block)
  # maybe not the right call?
  doc = JSON.parse($stdin.read)
  format = nil
  if ARGV.length > 1
    @format = ARGV[1]
  end
  @block = block
  @meta = doc[0]['unMeta']
  $stdout.puts JSON.dump(walk(doc))
end

.walk(x) ⇒ Object 



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# File 'lib/pandoc-filter.rb', line 23

def self.walk(x)
  if x.kind_of?(Array)
    result = []
    x.each do |item|
      if item.kind_of?(Hash) && item.has_key?('t')
        res = @block.call(item['t'], item['c'], @format, @meta)
        if !res
          result.push(walk(item))
        elsif res.kind_of?(Array)
          res.each do |z|
            result.push(walk(z))
          end
        else
          result.push(walk(res))
        end
      else
        result.push(walk(item))
      end
    end
    return result
  elsif x.kind_of?(Hash)
    result = {}
    x.each do |key,value|
      result[key] = walk(value)
    end
    return result
  else
    return x
  end
end