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tzdata

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Tzdata is a parser and library for the tz database.

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tzdata lib tzdata basic_data.ex
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lib/tzdata/basic_data.ex 

defmodule Tzdata.BasicData do

  @moduledoc false

  # this module formerly known as TzData



  alias Tzdata.Parser

  alias Tzdata.ParserOrganizer, as: Organizer

  file_names = ~w(africa antarctica asia australasia backward etcetera europe northamerica pacificnew southamerica)s

  all_files_read = Enum.map(file_names, fn file_name -> {String.to_atom(file_name), Parser.read_file(file_name)} end)

  all_files_flattened = all_files_read |> Enum.map(fn {_name, read_file} -> read_file end) |> List.flatten



  rules = Organizer.rules(all_files_flattened)

  zones = Organizer.zones(all_files_flattened)

  links = Organizer.links(all_files_flattened)

  Enum.each(zones, fn {k, v} -> def zone(unquote(k)), do: {:ok, unquote(Macro.escape(v))} end)

  Enum.each(rules, fn {k, v} -> def rules(unquote(k)), do: {:ok, unquote(Macro.escape(v))} end)

  Enum.each(links, fn {k, v} -> def zone(unquote(k)), do: {:ok, unquote(Macro.escape(zones[v]))} end)

  # if a function for a specific zone or rule has not been defined, these not-found-functions will be called

  def zone(_), do: {:error, :not_found}

  def rules(_), do: {:error, :not_found}



  # Provide lists of zone- and link-names

  def zone_list, do: unquote(Macro.escape(Organizer.zone_list(all_files_flattened)))

  def link_list, do: unquote(Macro.escape(Organizer.link_list(all_files_flattened)))

  def zone_and_link_list, do: unquote(Macro.escape(Organizer.zone_and_link_list(all_files_flattened)))



  # Provide map of links

  def links, do: unquote(Macro.escape(links))



  # Group by filename

  by_group = all_files_read

  |> Enum.map(fn {name, file_read} -> {name, Organizer.zone_and_link_list(file_read)} end)

  |> Enum.into(Map.new)

  def zones_and_links_by_groups, do: unquote(Macro.escape(by_group))

end