View Source Mobilizon.Cldr.Date.Interval (Mobilizon v5.0.0-beta.1)

Interval formats allow for software to format intervals like "Jan 10-12, 2008" as a shorter and more natural format than "Jan 10, 2008 - Jan 12, 2008". They are designed to take a start and end date, time or datetime plus a formatting pattern and use that information to produce a localized format.

See Mobilizon.Cldr.Date.Interval.to_string/3 and Mobilizon.Cldr.Interval.to_string/3

Summary

Functions

do_to_string!(from, to, options)

to_string(from, to, options)

Returns a interval formed from two dates as a localised string.

to_string!(from, to, options)

Returns a interval formed from two dates as a localised string.

Functions

do_to_string!(from, to, options)

to_string(from, to, options)

@spec to_string(Calendar.date() | nil, Calendar.date() | nil, Keyword.t()) ::
  {:ok, String.t()} | {:error, {module(), String.t()}}

Returns a interval formed from two dates as a localised string.

Arguments

from is any map that conforms to the Calendar.date type.
to is any map that conforms to the Calendar.date type. to must occur on or after from.
options is a keyword list of options. The default is [format: :medium, style: :date].

Either from or to may also be nil, in which case an open interval is formatted and the non-nil item is formatted as a standalone date.

Options

:format is one of :short, :medium or :long or a specific format type or a string representing of an interval format. The default is :medium.
:style supports dfferent formatting styles. The alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.
locale is any valid locale name returned by Cldr.known_locale_names/0 or a Cldr.LanguageTag struct. The default is Elixir.Mobilizon.Cldr.get_locale/0
number_system: a number system into which the formatted date digits should be transliterated

Returns

{:ok, string} or
{:error, {exception, reason}}

Notes

For more information on interval format string see the Cldr.Interval.
The available predefined formats that can be applied are the keys of the map returned by Cldr.DateTime.Format.interval_formats("en", :gregorian) where "en" can be replaced by any configuration locale name and :gregorian is the underlying CLDR calendar type.
In the case where from and to are equal, a single date is formatted instead of an interval

Examples

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-12-31]
{:ok, "Jan 1 – Dec 31, 2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-01-12]
{:ok, "Jan 1 – 12, 2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-01-12],
...> format: :long
{:ok, "Wed, Jan 1 – Sun, Jan 12, 2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-12-01],
...> format: :long, style: :year_and_month
{:ok, "January – December 2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-01-12],
...> format: :short
{:ok, "1/1/2020 – 1/12/2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-01-12],
...> format: :long, locale: "fr"
{:ok, "mer. 1 – dim. 12 janv. 2020"}

iex> Mobilizon.Cldr.Date.Interval.to_string ~D[2020-01-01], ~D[2020-01-12],
...> format: :long, locale: "th", number_system: :thai
{:ok, "พ. ๑ ม.ค. – อา. ๑๒ ม.ค. ๒๐๒๐"}

to_string!(from, to, options)

@spec to_string!(Calendar.date() | nil, Calendar.date() | nil, Keyword.t()) ::
  String.t() | no_return()

Returns a interval formed from two dates as a localised string.

Arguments

from is any map that conforms to the Calendar.date type.
to is any map that conforms to the Calendar.date type. to must occur on or after from.
options is a keyword list of options. The default is [format: :medium, style: :date].

Either from or to may also be nil, in which case an open interval is formatted and the non-nil item is formatted as a standalone date.

Options

:format is one of :short, :medium or :long or a specific format type or a string representing of an interval format. The default is :medium.
:style supports dfferent formatting styles. The alternatives are :date, :month_and_day, :month and :year_and_month. The default is :date.
locale is any valid locale name returned by Cldr.known_locale_names/0 or a Cldr.LanguageTag struct. The default is Elixir.Mobilizon.Cldr.get_locale/0.
number_system: a number system into which the formatted date digits should be transliterated.

Returns

string or
raises an exception

Notes

For more information on interval format string see the Cldr.Interval.
The available predefined formats that can be applied are the keys of the map returned by Cldr.DateTime.Format.interval_formats("en", :gregorian) where "en" can be replaced by any configuration locale name and :gregorian is the underlying CLDR calendar type.
In the case where from and to are equal, a single date is formatted instead of an interval

Examples

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-12-31])
"Jan 1 – Dec 31, 2020"

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-01-12])
"Jan 1 – 12, 2020"

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-01-12]),
...> format: :long
"Wed, Jan 1 – Sun, Jan 12, 2020"

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-12-01]),
...> format: :long, style: :year_and_month
"January – December 2020"

iex> use CalendarInterval
iex> Mobilizon.Cldr.Date.Interval.to_string! ~I"2020-01/12"
"Jan 1 – Dec 31, 2020"

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-01-12]),
...> format: :short
"1/1/2020 – 1/12/2020"

iex> Mobilizon.Cldr.Date.Interval.to_string! Date.range(~D[2020-01-01], ~D[2020-01-12]),
...> format: :long, locale: "fr"
"mer. 1 – dim. 12 janv. 2020"