View Source Cldr.Time (Cldr Dates & Times v2.12.0)

Provides localization and formatting of a Time struct or any map with the keys :hour, :minute, :second and optionlly :microsecond.

Cldr.Time provides support for the built-in calendar Calendar.ISO or any calendars defined with ex_cldr_calendars

CLDR provides standard format strings for Time which are reresented by the names :short, :medium, :long and :full. This allows for locale-independent formatting since each locale may define the underlying format string as appropriate.

Link to this section Summary

Functions

Return the preferred time format for a locale.

Formats a time according to a format string as defined in CLDR and described in TR35

Formats a time according to a format string as defined in CLDR and described in TR35.

Link to this section Functions

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hour_format_from_locale(locale)

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Return the preferred time format for a locale.

arguments

Arguments

returns

Returns

  • The hour format as an atom to be used for localization purposes. The return value is used as a function name in Cldr.DateTime.Formatter

notes

Notes

  • The hc key of the u extension is honoured and will override the default preferences for a locale or territory. See the last example below.

  • Different locales and territories present the hour of day in different ways. These are represented in Cldr.DateTime.Formatter in the following way:

SymbolMidn.MorningNoonAfternoonMidn.
h121...11121...1112
K01...1101...110
H01...111213...230
k241...111213...2324

examples

Examples

iex> Cldr.Time.hour_format_from_locale "en-AU"
:h12

iex> Cldr.Time.hour_format_from_locale "fr"
:h23

iex> Cldr.Time.hour_format_from_locale "fr-u-hc-h12"
:h12
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hour_format_from_locale(locale_name, backend \\ Cldr.Date.default_backend())

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to_string(time, backend \\ Cldr.Date.default_backend(), options \\ [])

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Specs

to_string(map(), Cldr.backend() | Keyword.t(), Keyword.t()) ::
  {:ok, String.t()} | {:error, {module(), String.t()}}

Formats a time according to a format string as defined in CLDR and described in TR35

returns

Returns

  • {:ok, formatted_time} or

  • {:error, reason}.

arguments

Arguments

  • time is a %DateTime{} or %NaiveDateTime{} struct or any map that contains the keys hour, minute, second and optionally calendar and microsecond

  • backend is any module that includes use Cldr and therefore is a Cldr backend module. The default is Cldr.default_backend/0.

  • options is a keyword list of options for formatting.

options

Options

  • format: :short | :medium | :long | :full or a format string. The default is :medium

  • locale: any locale returned by Cldr.known_locale_names/1. The default is Cldr.get_locale()

  • number_system: a number system into which the formatted date digits should be transliterated

  • era: :variant will use a variant for the era is one is available in the locale. In the "en" locale, for example, era: :variant will return "BCE" instead of "BC".

  • period: :variant will use a variant for the time period and flexible time period if one is available in the locale. For example, in the "en" locale period: :variant will return "pm" instead of "PM"

examples

Examples

iex> Cldr.Time.to_string ~T[07:35:13.215217], MyApp.Cldr
{:ok, "7:35:13 AM"}

iex> Cldr.Time.to_string ~T[07:35:13.215217], MyApp.Cldr, format: :short
{:ok, "7:35 AM"}

iex> Cldr.Time.to_string ~T[07:35:13.215217], MyApp.Cldr, format: :medium, locale: "fr"
{:ok, "07:35:13"}

iex> Cldr.Time.to_string ~T[07:35:13.215217], MyApp.Cldr, format: :medium
{:ok, "7:35:13 AM"}

iex> {:ok, datetime} = DateTime.from_naive(~N[2000-01-01 23:59:59.0], "Etc/UTC")
iex> Cldr.Time.to_string datetime, MyApp.Cldr, format: :long
{:ok, "11:59:59 PM UTC"}
Link to this function

to_string!(time, backend \\ Cldr.Date.default_backend(), options \\ [])

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Specs

to_string!(map(), Cldr.backend() | Keyword.t(), Keyword.t()) ::
  String.t() | no_return()

Formats a time according to a format string as defined in CLDR and described in TR35.

arguments

Arguments

  • time is a %DateTime{} or %NaiveDateTime{} struct or any map that contains the keys hour, minute, second and optionally calendar and microsecond

  • backend is any module that includes use Cldr and therefore is a Cldr backend module. The default is Cldr.default_backend/0.

  • options is a keyword list of options for formatting.

options

Options

  • format: :short | :medium | :long | :full or a format string. The default is :medium

  • locale is any valid locale name returned by Cldr.known_locale_names/0 or a Cldr.LanguageTag struct. The default is Cldr.get_locale/0

  • number_system: a number system into which the formatted date digits should be transliterated

  • era: :variant will use a variant for the era is one is available in the locale. In the "en" locale, for example, era: :variant will return "BCE" instead of "BC".

  • period: :variant will use a variant for the time period and flexible time period if one is available in the locale. For example, in the "en" locale period: :variant will return "pm" instead of "PM"

returns

Returns

  • formatted_time_string or

  • raises an exception.

examples

Examples

iex> Cldr.Time.to_string! ~T[07:35:13.215217], MyApp.Cldr
"7:35:13 AM"

iex> Cldr.Time.to_string! ~T[07:35:13.215217], MyApp.Cldr, format: :short
"7:35 AM"

iex> Cldr.Time.to_string ~T[07:35:13.215217], MyApp.Cldr, format: :short, period: :variant
{:ok, "7:35 AM"}

iex> Cldr.Time.to_string! ~T[07:35:13.215217], MyApp.Cldr, format: :medium, locale: "fr"
"07:35:13"

iex> Cldr.Time.to_string! ~T[07:35:13.215217], MyApp.Cldr, format: :medium
"7:35:13 AM"

iex> {:ok, datetime} = DateTime.from_naive(~N[2000-01-01 23:59:59.0], "Etc/UTC")
iex> Cldr.Time.to_string! datetime, MyApp.Cldr, format: :long
"11:59:59 PM UTC"