Class: Obo::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/obo/parser.rb

Constant Summary collapse

STANZA_START = 
/^\[(.*?)\]/
TAG_VALUE = 
/^(.*?):\s*([^!]*)\n/

Instance Method Summary collapse

Constructor Details

#initialize(filename) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/obo/parser.rb', line 9

def initialize(filename)
  @io = File.open(filename)
end

Instance Method Details

#elements(io = @io) ⇒ Object 



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# File 'lib/obo/parser.rb', line 13

def elements(io = @io)
  Enumerator.new do |yielder|
    header = Header.new
    while io.gets.match TAG_VALUE
      header.add($1, $2)
    end

    yielder << header

    io.gets until $_.match(STANZA_START)
    stanza = Stanza.new($1.strip)

    while io.gets
      case $_
      when TAG_VALUE
        stanza.add($1, $2)
      when STANZA_START
        yielder << stanza
        stanza = Stanza.new($1.strip)
      end
    end

    yielder << stanza
    rewind
  end
end

#rewind(io = @io) ⇒ Object 



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# File 'lib/obo/parser.rb', line 40

def rewind(io = @io)
  io.pos = 0
end