Class: AbstractFormatter

Inherits:
NullFormatter show all
Defined in:
lib/formatter.rb

Instance Method Summary collapse

Methods inherited from NullFormatter

#pop_alignment, #pop_style, #push_alignment, #push_style

Constructor Details

#initialize(writer) ⇒ AbstractFormatter

Returns a new instance of AbstractFormatter.



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# File 'lib/formatter.rb', line 30

def initialize(writer)
  @writer = writer
  @align = nil
  @align_stack = []
  @font_stack = []
  @margin_stack = []
  @spacing = nil
  @style_stack = []
  @nospace = true
  @softspace = false
  @para_end = true
  @parskip = 0
  @hard_break = true
  @have_label = false
end

Instance Method Details

#add_flowing_data(data) ⇒ Object 



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# File 'lib/formatter.rb', line 102

def add_flowing_data(data)
  return if not data
  prespace = (/^\s/ =~ data)
  postspace = (/\s$/ =~ data)
  data = data.split.join(" ")
  if @nospace and data.length < 1
    return
  elsif prespace or @softspace
    if data.length == 0
      if not @nospace
        @softspace = true
        @parskip = 0
      end
      return
    end
    if not @nospace
      data = ' ' + data
    end
  end
  @hard_break = @nospace = @para_end = false
  @have_label = false
  @parskip = 0
  @softspace = postspace
  @writer.send_flowing_data(data)
end

#add_hor_rule ⇒ Object 



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# File 'lib/formatter.rb', line 73

def add_hor_rule
  if not @hard_break
    @writer.send_line_break
  end
  @writer.send_hor_rule #(args, kw)
  @hard_break = true
  @nospace = true
  @have_label = false
  @para_end = false
  @softspace = false
  @parskip = 0
end

#add_label_data(format, counter, blankline = nil) ⇒ Object 



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# File 'lib/formatter.rb', line 86

def add_label_data(format, counter, blankline = nil)
  if @have_label or !@hard_break
    @writer.send_line_break
  end
  if not @para_end
    @writer.send_paragraph(1)  #((blankline and 1) or 0)
  end
  if format.kind_of? String
    #@writer.send_label_data(format_counter(format, counter))
  else
    @writer.send_label_data(format)
  end
  @nospace = @have_label = @hard_break = @para_end = 1
  @softspace = @parskip = 0
end

#add_line_break ⇒ Object 



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# File 'lib/formatter.rb', line 62

def add_line_break
  if not (@hard_break or @para_end)
    @writer.send_line_break
    @have_label = false
    @parskip = 0
  end
  @hard_break = true
  @nospace = true
  @softspace = false
end

#add_literal_data(data) ⇒ Object 



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# File 'lib/formatter.rb', line 128

def add_literal_data(data)
  return if not data
  if @softspace
    @writer.send_flowing_data("_")
  end
  @hard_break = (data[-1,1] == "\n")
  @nospace = @para_end = @softspace = false
  @have_label = false
  @parskip = 0
  @writer.send_literal_data(data)
end

#assert_line_data(flag = true) ⇒ Object 



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# File 'lib/formatter.rb', line 219

def assert_line_data(flag=true)
  @nospace = !flag
  @hard_break = !flag
  @para_end = false
  @have_label = false
  @parskip = 0
end

#end_paragraph(blankline) ⇒ Object 



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# File 'lib/formatter.rb', line 46

def end_paragraph(blankline)
  if not @hard_break
    @writer.send_line_break
    @have_label = false
  end
  if (@parskip < blankline) and !@have_label
    @writer.send_paragraph(blankline - @parskip)
    @parskip = blankline
    @have_label = 0
  end
  @hard_break = true
  @nospace = true
  @para_end = true
  @softspace = false
end

#flush_softspace ⇒ Object 



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# File 'lib/formatter.rb', line 140

def flush_softspace
  if @softspace
    @hard_break = false
    @para_end = false
    @have_label = false
    @softspace = false
    @parskip = 0
    @nospace = true
    @writer.send_flowing_data(' ')
  end
end

#pop_font ⇒ Object 



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# File 'lib/formatter.rb', line 180

def pop_font
  if @font_stack.length > 0
    @font_stack.pop
  end
  if @font_stack
    font = @font_stack[-1]
  else
    font = nil
  end
  @writer.new_font(font)
end

#pop_margin ⇒ Object 



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# File 'lib/formatter.rb', line 201

def pop_margin
  if @margin_stack
    @margin_stack.pop
  end
  fstack = @margin_stack.compact
  if fstack.length > 0
    margin = fstack[-1]
  else
    margin = nil
  end
  @writer.new_margin(margin, fstack.length)
end

#push_font(size, i, b, tt) ⇒ Object 



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# File 'lib/formatter.rb', line 152

def push_font(size, i, b, tt)
  if @softspace
    @hard_break = false
    @para_end = false
    @softspace = false
    @nospace = true
    @writer.send_flowing_data(' ')
  end
  if @font_stack.length > 0
    csize, ci, cb, ctt = @font_stack[-1]
    if size == nil
      size = csize
    end
    if i == nil
      i = ci
    end
    if b == nil
      b = cb
    end
    if tt == nil
      tt = ctt
    end
  end
  font = [size, i, b, tt]
  @font_stack << font
  @writer.new_font(font)
end

#push_margin(margin) ⇒ Object 



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# File 'lib/formatter.rb', line 192

def push_margin(margin)
  @margin_stack << margin
  fstack = @margin_stack.compact
  if (!margin) && (fstack.length > 0)
    margin = fstack[-1]
  end
  @writer.new_margin(margin, fstack.length)
end

#set_spacing(spacing) ⇒ Object 



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# File 'lib/formatter.rb', line 214

def set_spacing(spacing)
  @spacing = spacing
  @writer.new_spacing(spacing)
end