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Contents
# -*- coding: utf-8 -*-
module Chicago
module ETL
module Transformations
class UkPostCodeField
MATCH = /\A([A-Z][A-Z]?[0-9][0-9A-Z]?)(?:([0-9][A-Z]{2}))?\Z/
# Returns cleaned, formatted data about a UK Post Code.
#
# Example:
#
# UkPostCodeField.new.normalize(" SW !2 4 GH")
# # => { :post_code => "SW12 4GH",
# :outcode => "SW12",
# :incode => "4GH" }
#
# Partial postcodes will be returned without the incode. BFPO
# postcodes are supported, but have no incode or
# outcode. Postcodes that do not follow the format will be
# returned as is, with an invalid key set.
def normalize(raw_post_code)
reformat(clean(raw_post_code)) ||
{:post_code => raw_post_code, :invalid => true}
end
private
def clean(raw_post_code)
raw_post_code.
strip.
upcase.
tr('!"$%^&*()', '124567890').
gsub("£", "3").
sub(/^0([XL])/, 'O\1').
sub(/^([PSCY])0/, '\1O')
end
def reformat(post_code)
if post_code[0..3] == "BFPO"
{ :post_code => post_code.sub(/BFPO\s*/, "BFPO ") }
else
reformat_standard_post_code(post_code)
end
end
def reformat_standard_post_code(post_code)
match = post_code.gsub(/\s+/,'').match(MATCH)
unless match.nil?
{ :outcode => match[1],
:incode => match[2],
:post_code => [match[1], match[2]].join(' ').strip }
end
end
end
end
end
end
Version data entries
18 entries across 18 versions & 1 rubygems