2 files changed, 68 insertions, 0 deletions
diff --git a/lib/norwegian-postcodes.rb b/lib/norwegian-postcodes.rb
new file mode 100644
index 0000000..22d67d5
--- /dev/null
+++ b/lib/norwegian-postcodes.rb
@@ -0,0 +1,68 @@
+module PostCodes
+
+  Counties = [
+    "ØSTFOLD",
+    "AKERSHUS",
+    "OSLO",
+    "HEDMARK",
+    "OPPLAND",
+    "BUSKERUD",
+    "VESTFOLD",
+    "TELEMARK",
+    "AUST-AGDER",
+    "VEST-AGDER",
+    "ROGALAND",
+    "HORDALAND",
+    "(BERGEN)",
+    "SOGN OG FJORDANE",
+    "MØRE OG ROMSDAL",
+    "SØR-TRØNDELAG",
+    "NORD-TRØNDELAG",
+    "NORDLAND",
+    "TROMS",
+    "FINNMARK",
+    "SVALBARD",
+    "JAN MAYEN",
+    "KONTINENTALSOKKELEN"
+  ]
+
+  class PostCode
+    attr_reader :postcode, :city, :municipality, :municipality_name, :cat
+
+    def initialize(postcode, city, muni, muni_name, cat)
+      @postcode, @city, @municipality, @municipality_name, @cat = postcode, city, muni, muni_name, cat
+    end
+
+    def county
+      code = @municipality[0..1].to_i
+      [code, PostCodes.county(code)]
+    end
+
+    def >=(postcode)
+      @postcode.to_i >= postcode.to_i
+    end
+
+    def to_s
+      [@postcode, @city, @municipality, @municipality_name, @cat].join("\t")
+    end
+  end
+
+  class << self
+    def load(f)
+      @postcodes = []
+      IO.foreach(f, :encoding => Encoding::ISO_8859_15) do |l|
+        a = l.chomp().split("\t").map{|s| s.encode(Encoding::UTF_8)}
+        @postcodes << PostCode.new(*a)
+      end
+    end
+
+    def search(pc)
+      @postcodes.bsearch {|x| x >= pc}
+    end
+
+    def county(c)
+      return nil unless c > 0 && c <= Counties.size
+      Counties[c - 1]
+    end
+  end
+end
diff --git a/lib/tasks/norwegian-postcodes.rake b/lib/tasks/norwegian-postcodes.rake
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/tasks/norwegian-postcodes.rake