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Localization (parsing, formatting) of numbers, dates/time/calendar, units of measure, messages and lists. Includes localized collation.

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localize lib localize number transliterate.ex
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lib/localize/number/transliterate.ex 

defmodule Localize.Number.Transliterate do

  @moduledoc """

  Functions to transliterate digits between number systems.



  Transliteration replaces each digit character in a string with

  the corresponding digit from another number system using a

  precomputed mapping.



  """



  @doc """

  Transliterates digit characters in a string using a

  transliteration map.



  Non-digit characters (separators, signs, etc.) are passed

  through unchanged.



  ### Arguments



  * `string` is the string containing digits to transliterate.



  * `transliteration_map` is a map of `%{from_grapheme => to_grapheme}`.



  ### Returns



  * A new string with digits replaced according to the map.



  ### Examples



      iex> map = %{"0" => "٠", "1" => "١", "2" => "٢", "3" => "٣"}

      iex> Localize.Number.Transliterate.transliterate_digits("123", map)

      "١٢٣"



  """

  @spec transliterate_digits(String.t(), map()) :: String.t()

  def transliterate_digits(string, transliteration_map) do

    string

    |> String.graphemes()

    |> Enum.map_join(fn grapheme ->

      Map.get(transliteration_map, grapheme, grapheme)

    end)

  end

end