Class: Deb822::Emitter

Inherits:
Object
  • Object
show all
Defined in:
lib/deb822/emitter.rb

Overview

Low-level generator for deb822 document

Instance Method Summary collapse

Constructor Details

#initialize(output) ⇒ Emitter

Returns a new instance of Emitter.



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# File 'lib/deb822/emitter.rb', line 6

def initialize(output)
  @output = output

  @at_beginning = true
  @in_paragraph = false
end

Instance Method Details

#emit_continuation_line(line) ⇒ Object 



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# File 'lib/deb822/emitter.rb', line 51

def emit_continuation_line(line)
  if /\A(?:\.|\Z)/.match?(line)
    @output << ' .' << line
  else
    @output << ' ' << line
  end
  @output << "\n" unless line.end_with?("\n")
  self
end

#emit_field(name, value) ⇒ Object 



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# File 'lib/deb822/emitter.rb', line 13

def emit_field(name, value)
  name = Deb822.FieldName(name)

  if value.respond_to?(:each_line)
    enum = value.each_line
  else
    enum = value.to_s.each_line
  end

  if !@at_beginning && !@in_paragraph
    @output << "\n"
  end
  @at_beginning = false
  @in_paragraph = true

  @output << name.to_s << ': '

  begin
    line = enum.next
    @output << line
    @output << "\n" unless line.end_with?("\n")
  rescue StopIteration
    # nop
  else
    loop do
      emit_continuation_line(enum.next)
    end
  end

  self
end

#emit_fields(pairs) ⇒ Object 



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# File 'lib/deb822/emitter.rb', line 45

def emit_fields(pairs)
  pairs.each_pair do |name, value|
    emit_field(name, value)
  end
end

#start_paragraph ⇒ Object Also known as: end_paragraph 



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# File 'lib/deb822/emitter.rb', line 61

def start_paragraph
  @in_paragraph = false
  self
end