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timex
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Timex is a rich, comprehensive Date/Time library for Elixir projects, with full timezone support via the :tzdata package. If you need to manipulate dates, times, datetimes, timestamps, etc., then Timex is for you!
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lib/parse/datetime/tokenizers/directive.ex
defmodule Timex.Parse.DateTime.Tokenizers.Directive do
@moduledoc false
alias Timex.Parse.DateTime.Parsers
alias Timex.Parse.DateTime.Tokenizers.Directive
defstruct type: :literal,
value: nil,
modifiers: [],
flags: [],
width: [min: -1, max: nil],
parser: nil,
weight: 0
@type t :: %__MODULE__{}
@doc """
Gets a parsing directive for the given token name, where the token name
is an atom.
## Examples
iex> alias Timex.Parsers.Directive
...> %Directive{type: type, flags: flags} = Directive.get(:year4, "YYYY", padding: :zeros)
...> {type, flags}
{:year4, [padding: :zeros]}
"""
@spec get(atom, String.t(), [{atom, term}] | []) :: Directive.t()
def get(type, directive, opts \\ []) do
min_width = Keyword.get(opts, :min_width, -1)
width = Keyword.get(opts, :width, min: min_width, max: nil)
flags = Keyword.merge(Keyword.get(opts, :flags, []), width)
modifiers = Keyword.get(opts, :modifiers, [])
get(type, directive, flags, modifiers, width)
end
@simple_types [
:year4,
:year2,
:century,
:hour24,
:hour12,
:zname,
:zoffs,
:zoffs_colon,
:zoffs_sec,
:iso_date,
:iso_time,
:iso_week,
:iso_weekday,
:iso_ordinal,
:ansic,
:unix,
:kitchen,
:slashed,
:asn1_utc_time,
:asn1_generalized_time,
:strftime_iso_clock,
:strftime_iso_clock_full,
:strftime_kitchen,
:strftime_iso_shortdate
]
@mapped_types [
iso_year4: :year4,
iso_year2: :year2,
month: :month2,
mshort: :month_short,
mfull: :month_full,
day: :day_of_month,
oday: :day_of_year,
iso_weeknum: :week_of_year_iso,
week_mon: :week_of_year_mon,
week_sun: :week_of_year_sun,
wday_mon: :weekday,
wday_sun: :weekday,
wdshort: :weekday_short,
wdfull: :weekday_full,
min: :minute,
sec: :second,
sec_fractional: :second_fractional,
sec_epoch: :seconds_epoch,
us: :microseconds,
ms: :milliseconds,
am: :ampm,
AM: :ampm,
zabbr: :zname,
iso_8601_extended: :iso8601_extended,
iso_8601_basic: :iso8601_basic,
rfc_822: :rfc822,
rfc_1123: :rfc1123,
rfc_3339: :rfc3339,
strftime_iso_date: :iso_date
]
@mapped_zulu_types [
iso_8601_extended_z: :iso8601_extended,
iso_8601_basic_z: :iso8601_basic,
rfc_822z: :rfc822,
rfc_1123z: :rfc1123,
rfc_3339z: :rfc3339,
asn1_generalized_time_z: :asn1_generalized_time
]
for type <- @simple_types do
def get(unquote(type), directive, flags, mods, width) do
%Directive{
type: unquote(type),
value: directive,
flags: flags,
modifiers: mods,
width: width,
parser: apply(Parsers, unquote(type), [flags])
}
end
end
for {type, parser_fun} <- @mapped_types do
def get(unquote(type), directive, flags, mods, width) do
%Directive{
type: unquote(type),
value: directive,
flags: flags,
modifiers: mods,
width: width,
parser: apply(Parsers, unquote(parser_fun), [flags])
}
end
end
for {type, parser_fun} <- @mapped_zulu_types do
def get(unquote(type), directive, flags, mods, width) do
%Directive{
type: unquote(type),
value: directive,
flags: flags,
modifiers: mods,
width: width,
parser: apply(Parsers, unquote(parser_fun), [[{:zulu, true} | flags]])
}
end
end
def get(:asn1_generalized_time_tz, directive, flags, mods, width) do
%Directive{
type: :asn1_generalized_time_tz,
value: directive,
flags: flags,
modifiers: mods,
width: width,
parser: Parsers.asn1_generalized_time([{:zoffs, true} | flags])
}
end
# Catch-all
def get(type, _directive, _flags, _mods, _width),
do: {:error, "Unrecognized directive type: #{type}."}
end