Class: Postnummer::Parser

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

Overview

Class that do the parsing from posten.se

Instance Method Summary collapse

Constructor Details

#initialize(zip_code) ⇒ Parser

Returns a new instance of Parser.

Parameters:

  • zip_code (String) —

    a swedish zip_code



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# File 'lib/postnummer/parser.rb', line 7

def initialize(zip_code)
  @zip_code = zip_code
end

Instance Method Details

#parse ⇒ Array<Street>

Makes the web call and parses out a list of Streets

Returns:

  • (Array<Street>) —

    a list of Street objects. Returns empty array if no streets found



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

def parse
  url = "http://www.posten.se/soktjanst/postnummersok/resultat.jspv?pnr=#{@zip_code}"
  agent = Mechanize.new

  streets = []

  agent.get url do |page|
    rows = page.search 'table.result tr'
    rows.each do |tr|
      name = tr.search('td[1]').text
      street_numbers_string = tr.search('td[2]').text
      zip_code = tr.search('td[3]').text
      city = tr.search('td[4]').text

      street_numbers = parse_street_numbers(street_numbers_string)
      streets << Street.new(name, street_numbers[:first], street_numbers[:last], zip_code, city)
    end
  end

  streets
end

#parse_street_numbers(street_numbers) ⇒ Hash

Parses the street numbers from a street_numbers string

Returns:

  • (Hash) —

    hash that has the start and end values. Use key :first and :last to access



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# File 'lib/postnummer/parser.rb', line 38

def parse_street_numbers(street_numbers)
  numbers = street_numbers.split ' - '
  { first: numbers[0], last: numbers[1] }
end