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Read ESRI Shapefiles as a stream of features and their attributes

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exshape lib exshape twelve_fifty_two.ex
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lib/exshape/twelve_fifty_two.ex 

defmodule Exshape.TwelveFiftyTwo do

 def convert(bin), do: convert(bin, [])



 @table %{

   0x80 => 0x20ac,

   0x82 => 0x201a,

   0x83 => 0x0192,

   0x84 => 0x201e,

   0x85 => 0x2026,

   0x86 => 0x2020,

   0x87 => 0x2021,

   0x88 => 0x02c6,

   0x89 => 0x2030,

   0x8a => 0x0160,

   0x8b => 0x2039,

   0x8c => 0x0152,

   0x8e => 0x017d,

   0x91 => 0x2018,

   0x92 => 0x2019,

   0x93 => 0x201c,

   0x94 => 0x201d,

   0x95 => 0x2022,

   0x96 => 0x2013,

   0x97 => 0x2014,

   0x98 => 0x02dc,

   0x99 => 0x2122,

   0x9a => 0x0161,

   0x9b => 0x203a,

   0x9c => 0x0153,

   0x9e => 0x017e,

   0x9f => 0x0178

 }



 defp convert(<<>>, chunks) do

   List.to_string(Enum.reverse(chunks))

 end

 defp convert(<<b, bs :: binary>>, chunks) when b < 0x80 or b > 0x9f do

   convert(bs, [b | chunks])

 end

 Enum.each(0x80..0x9f, fn byte ->

   defp convert(<<unquote(byte), bs :: binary>>, chunks) do

     convert(bs, [unquote(Map.get(@table, byte, byte)) | chunks])

   end

 end)

end