Method: Tk::Text#dump

Defined in:

lib/tk/text.rb

#dump(type_info, *index, &block) ⇒ Object

# File 'lib/tk/text.rb', line 1432

def dump(type_info, *index, &block)
  if type_info.kind_of?(Symbol)
    type_info = [ type_info.to_s ]
  elsif type_info.kind_of?(String)
    type_info = [ type_info ]
  end
  args = type_info.collect{|inf| '-' + inf}
  args << '-command' << block if block
  str = tk_send('dump', *(args + index))
  result = []
  sel = nil
  i = 0
  while i < str.size
    # retrieve key
    idx = str.index(/ /, i)
    result.push str[i..(idx-1)]
    i = idx + 1

    # retrieve value
    case result[-1]
    when 'text'
      if str[i] == ?{
        # text formed as {...}
        val, i = _retrieve_braced_text(str, i)
        result.push val
      else
        # text which may contain backslashes
        val, i = _retrieve_backslashed_text(str, i)
        result.push val
      end
    else
      idx = str.index(/ /, i)
      val = str[i..(idx-1)]
      case result[-1]
      when 'mark'
        case val
        when 'insert'
          result.push TkTextMarkInsert.new(self)
        when 'current'
          result.push TkTextMarkCurrent.new(self)
        when 'anchor'
          result.push TkTextMarkAnchor.new(self)
        else
          result.push tk_tcl2ruby(val)
        end
      when 'tagon'
        if val == 'sel'
          if sel
            result.push sel
          else
            result.push TkTextTagSel.new(self)
          end
        else
          result.push tk_tcl2ruby(val)
        end
      when 'tagoff'
          result.push tk_tcl2ruby(val)
      when 'window'
        result.push tk_tcl2ruby(val)
      when 'image'
        result.push tk_tcl2ruby(val)
      end
      i = idx + 1
    end

    # retrieve index
    idx = str.index(/ /, i)
    if idx
      result.push(Tk::Text::IndexString.new(str[i..(idx-1)]))
      i = idx + 1
    else
      result.push(Tk::Text::IndexString.new(str[i..-1]))
      break
    end
  end

  kvis = []
  until result.empty?
    kvis.push [result.shift, result.shift, result.shift]
  end
  kvis  # result is [[key1, value1, index1], [key2, value2, index2], ...]
end