ex_cldr

0.8.0

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Common Locale Data Repository (CLDR) functions for Elixir to localize and format numbers, dates, lists, messages, languages, territories and units with support for over 700 locales for internationalized (i18n) and localized (L10N) applications.

Retired package: Deprecated

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ex_cldr priv cldr rfc5646.abnf

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priv/cldr/rfc5646.abnf

!!!
require Logger
def normalize(input) when is_list(input) do
  to_string(input)
end
def normalize(input) do
  input
end
def normalize_list([list]) do
  normalize(list)
end
def normalize_list(list) when is_list(list) do
  Enum.map(list, &normalize/1)
end
def normalize_list(list) do
  list
end
def normalize_tuples(list) do
  Enum.map(list, fn {k, v} ->
    {normalize(k), normalize_list(v)}
  end)
end
def return_value(key, state, string_values, _values, _rule) do
  [v] = string_values
  {:ok, Map.put(state, key, normalize(v)), v}
end
def accumulate_value(key, state, string_values, _values, _rule) do
  [v] = string_values
  value = normalize(v)
  case Map.get(state, key) do
    nil ->
      {:ok, Map.put(state, key, value), value}
    [_h | _t] = state_value ->
      {:ok, Map.put(state, key, state_value ++ [value]), value}
    state_value ->
      {:ok, Map.put(state, key, [state_value, value]), value}
  end
end
def tuples(values) do
  values
  |> List.flatten
  |> Enum.reject(&is_integer/1)
end
!!!

language-tag  = langtag             ; normal language tags
              / privateuse          ; private use tag
              / grandfathered       ; grandfathered tags

langtag       = language
                ["-" script]
                ["-" region]
                *("-" variant)
                *("-" extensions)
                ["-" privateuse]

language      = 2*3ALPHA            ; shortest ISO 639 code
                ;["-" extlang]      ; sometimes followed by
                                    ; extended language subtags
                / 4ALPHA            ; or reserved for future use
                / 5*8ALPHA  !!!     # or registered language subtag
                  return_value(:language, state, string_values, values, rule)
                !!!

extlang       = 3ALPHA              ; selected ISO 639 codes
                *2("-" 3ALPHA)      ; permanently reserved

script        = 4ALPHA  !!!         # ISO 15924 code
                  return_value(:script, state, string_values, values, rule)
                !!!

region        = 2ALPHA              ; ISO 3166-1 code
                / 3DIGIT !!!        # UN M.49 code
                  return_value(:region, state, string_values, values, rule)
                !!!

variant       = 5*8alphanum         ; registered variants
                / (DIGIT 3alphanum) !!! 
                  accumulate_value(:variant, state, string_values, values, rule)
                !!!

extensions     = locale / transform / extension !!! 
                 _ = rule
                 _ = string_values
                 state = if values == [[[[]]]] do
                   state
                 else
                   [[[{extension, values}]]] =  values
                   extensions = Map.put(state.extensions, extension, normalize_list(values))
                   Map.put(state, :extensions, extensions)
                 end
                 {:ok, state, []}
              !!!

extension     = singleton 1*("-" (2*8alphanum)) !!! 
                 _ = rule
                 _ = string_values
                [extension | values] = :string.split(:lists.flatten(values), '-', :all)
                {:ok, state, {normalize(extension), values}}
              !!!

                                    ;  The following is the syntax for the extensions managed
                                    ;  by CLDR.  These are extensions "u" for locale and "t"
                                    ;  for transforms
locale        = "u" (1*("-" keyword) / 1*("-" attribute) *("-" keyword)) !!!
                _ = rule
                _ = string_values
                keywords = tuples(values) |> normalize_tuples |> Enum.into(%{})
                {:ok, %{state | locale: keywords}, []}
              !!!

transform      = "t" (1*("-" keyword)) !!!
                _ = rule
                _ = string_values
                keywords = tuples(values) |> normalize_tuples |> Enum.into(%{})
                {:ok, %{state | transform: keywords}, []}
              !!!
              
keyword       = key ["-" type] !!!
                _ = rule
                _ = string_values
                [key | values] = :string.split(:lists.flatten(values), '-', :all)
                {:ok, state, {normalize(key), values}}
              !!!
key           = 2alphanum !!! 
                _ = rule
                _ = string_values
                {:ok, state, normalize(:lists.flatten(values))}
              !!!
type          = 3*8alphanum *("-" 3*8alphanum) !!!
                _ = rule
                _ = string_values
                {:ok, state, normalize(:lists.flatten(values))}
              !!!
attribute     = 3*8alphanum !!! 
                _ = rule
                _ = string_values
                {:ok, state, {:attributes, normalize_list(:string.split(:lists.flatten(values), '-', :all))}}
              !!!

                                    ; Single alphanumerics
                                    ; "x" reserved for private use
                                    ; "u" reserved for CLDR use as locale
                                    ; "t" reserved for CLDR use as tranforms
singleton     = DIGIT               ; 0 - 9
              / %x41-53             ; A - S
              / %x56-57             ; V - W
              / %x59-5A             ; Y - Z
              / %x61-73             ; a - s
              / %x76-77             ; v - w
              / %x79-7A             ; y - z

privateuse    = "x" 1*("-" (1*8alphanum)) !!!
                 _ = rule
                 _ = string_values
                [_x | values] = :string.split(:lists.flatten(values), '-', :all)
                {:ok, %{state | private_use: normalize_list(values)}, []}
              !!!

grandfathered = irregular           ; non-redundant tags registered
              / regular             ; during the RFC 3066 era

irregular     = "en-GB-oed"         ; irregular tags do not match
              / "i-ami"             ; the 'langtag' production and
              / "i-bnn"             ; would not otherwise be
              / "i-default"         ; considered 'well-formed'
              / "i-enochian"        ; These tags are all valid,
              / "i-hak"             ; but most are deprecated
              / "i-klingon"         ; in favor of more modern
              / "i-lux"             ; subtags or subtag
              / "i-mingo"           ; combination
              / "i-navajo"
              / "i-pwn"
              / "i-tao"
              / "i-tay"
              / "i-tsu"
              / "sgn-BE-FR"
              / "sgn-BE-NL"
              / "sgn-CH-DE"

regular       = "art-lojban"        ; these tags match the 'langtag'
              / "cel-gaulish"       ; production, but their subtags
              / "no-bok"            ; are not extended language
              / "no-nyn"            ; or variant subtags: their meaning
              / "zh-guoyu"          ; is defined by their registration
              / "zh-hakka"          ; and all of these are deprecated
              / "zh-min"            ; in favor of a more modern
              / "zh-min-nan"        ; subtag or sequence of subtags
              / "zh-xiang"

alphanum      = (ALPHA / DIGIT)     ; letters and numbers

DIGIT          = %x30-39
ALPHA          = %x41-5A / %x61-7A

Operator	Description	Example
name:	Match package name. Supports * wildcards and repo/package form	name:phx* or name:hexpm/phoenix
description:	Full-text search of package descriptions	description:auth
depends:	Packages depending on a given package. Supports repo:package form	depends:ecto or depends:hexpm:ecto
build_tool:	Filter by build tool	build_tool:mix
updated_after:	Packages updated after an ISO8601 datetime	updated_after:2025-01-01T00:00:00Z
extra:	Match custom metadata (key,value). Nested keys are separated by commas	extra:license,MIT