Class: FreeZipcodeData::DataSource

Inherits:
Object
  • Object
show all
Defined in:
lib/free_zipcode_data/data_source.rb

Constant Summary collapse

BASE_URL = 
'http://download.geonames.org/export/zip'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(country = nil) ⇒ DataSource

Returns a new instance of DataSource.



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# File 'lib/free_zipcode_data/data_source.rb', line 13

def initialize(country = nil)
  @country = country
  @options = Options.instance.hash
  @logger  = Logger.instance
end

Instance Attribute Details

#country ⇒ Object (readonly)

Returns the value of attribute country.



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# File 'lib/free_zipcode_data/data_source.rb', line 11

def country
  @country
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/free_zipcode_data/data_source.rb', line 11

def options
  @options
end

Instance Method Details

#datafile ⇒ Object 



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# File 'lib/free_zipcode_data/data_source.rb', line 28

def datafile
  @datafile ||= begin
    datafile_with_headers
  end
end

#download ⇒ Object 



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# File 'lib/free_zipcode_data/data_source.rb', line 19

def download
  return nil if !options.clobber && File.exist?(zipfile_path)
  FileUtils.mkdir_p(options.work_dir)
  @logger.info("Downloading: #{zipfile} from GeoNames...")
  open(zipfile_path, 'wb') do |file|
    file << open("#{BASE_URL}/#{zipfile}").read
  end
end