Class: Madeline::Interface

Inherits:
Object
  • Object
show all
Defined in:
lib/madeline/interface.rb

Constant Summary collapse

DEFAULT_OPTIONS = 
{}

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Interface

Returns a new instance of Interface.



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# File 'lib/madeline/interface.rb', line 12

def initialize(options={})
  @madeline = options.delete(:madeline) || MADELINE_COMMAND
  @options = serialize_options(DEFAULT_OPTIONS.merge(options))
end

Instance Method Details

#draw(io) ⇒ Object 



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# File 'lib/madeline/interface.rb', line 17

def draw(io)
  tempfile = Tempfile.new('madeline')
  if io.respond_to? :read
    while buffer = io.read(4096) do
      tempfile.write(buffer)
    end
  else 
    tempfile.write(io.to_s)
  end
  tempfile.flush
  tempoutfile = Tempfile.new('madeline_output')
  if !File.exists?(tempfile.path)
    raise Error, "Failed to create madeline input file #{tempfile.path}"
  end
  begin
    log = `#{command} --outputprefix #{tempoutfile.path} --outputext .xml #{tempfile.path} 2>&1`
    unless (log.match(/Pedigree output file is/)) then
	  raise Error, "Madeline failed to run or had a segmentation fault.  #{command} --outputprefix #{tempoutfile.path} --outputext .xml #{tempfile.path}"
	end
    filename = "#{tempoutfile.path}.xml"
	if (!File.exists?(filename)) then
	  raise Error, "Output File doesn't exist. #{filename}   command was : #{command} --outputprefix #{tempoutfile.path} --outputext .xml #{tempfile.path}"
    end
  rescue 
	if log.nil? then
      raise Error, "Madeline failed to run. Tried #{@madeline}.  #{$!}"
	else
	  raise Error, "Madeline had an error: #{log}  Tried #{@madeline}.\n #{$!}\n"
	end
  ensure
    tempfile.close!
  end
  unless $?.exitstatus.zero?
    raise Error, log 
  end
  warnings = Array.new
  lines = log.split("\n")
  lines.each do |line|
	line.gsub!("\e[0m","") # remove the end color code from madeline2
    warnings.push(line.match(/Warning:.*/)[0]) if line.match(/Warning:/)
  end
  warn = warnings.join("; ")
  if block_given? then
    f = File.new(filename)
	contents = f.read
	File.delete(filename)
    yield(StringIO.new(contents), warn)
  end
  return filename, warn
end