View Source Timex.Format.DateTime.Formatter behaviour (timex v3.7.11)

This module defines the behaviour for custom DateTime formatters.

Link to this section Summary

Functions

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string and formatter. If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter.

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string and formatter. If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter.

Given a token (as found in Timex.Parsers.Directive), and a Date, DateTime, or NaiveDateTime struct, produce a string representation of the token using values from the struct, using the default locale.

Given a token (as found in Timex.Parsers.Directive), and a Date, DateTime, or NaiveDateTime struct, produce a string representation of the token using values from the struct.

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string, locale, and formatter. If the locale does not have translations, "en" will be used by default.

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string, locale, and formatter.

Validates the provided format string, using the provided formatter, or if none is provided, the default formatter. Returns :ok when valid, or {:error, reason} if not valid.

Link to this section Callbacks

Link to this callback

format!(date, format_string)

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@callback format!(date :: Timex.Types.calendar_types(), format_string :: String.t()) ::
  String.t() | no_return()
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format(date, format_string)

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@callback format(date :: Timex.Types.calendar_types(), format_string :: String.t()) ::
  {:ok, String.t()} | {:error, term()}
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lformat!( date, format_string, locale )

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@callback lformat!(
  date :: Timex.Types.calendar_types(),
  format_string :: String.t(),
  locale :: String.t()
) :: String.t() | no_return()
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lformat( date, format_string, locale )

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@callback lformat(
  date :: Timex.Types.calendar_types(),
  format_string :: String.t(),
  locale :: String.t()
) :: {:ok, String.t()} | {:error, term()}
@callback tokenize(format_string :: String.t()) ::
  {:ok, [Timex.Parse.DateTime.Tokenizers.Directive.t()]} | {:error, term()}

Link to this section Functions

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format!(date, format_string, formatter \\ Default)

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@spec format!(Timex.Types.valid_datetime(), String.t(), atom() | nil) ::
  String.t() | no_return()

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string and formatter. If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter.

Formatting will use the configured default locale, "en" if no other default is given.

If an error is encountered during formatting, format! will raise.

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format(date, format_string, formatter \\ Default)

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@spec format(Timex.Types.valid_datetime(), String.t(), atom() | nil) ::
  {:ok, String.t()} | {:error, term()}

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string and formatter. If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter.

Formatting will use the configured default locale, "en" if no other default is given.

Link to this function

format_token(token, date, modifiers, flags, width)

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@spec format_token(atom(), Timex.Types.calendar_types(), list(), list(), list()) ::
  String.t() | {:error, term()}

Given a token (as found in Timex.Parsers.Directive), and a Date, DateTime, or NaiveDateTime struct, produce a string representation of the token using values from the struct, using the default locale.

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format_token(locale, token, date, modifiers, flags, width)

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@spec format_token(
  String.t(),
  atom(),
  Timex.Types.calendar_types(),
  list(),
  list(),
  list()
) ::
  String.t() | {:error, term()}

Given a token (as found in Timex.Parsers.Directive), and a Date, DateTime, or NaiveDateTime struct, produce a string representation of the token using values from the struct.

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lformat!(date, format_string, locale, formatter \\ Default)

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@spec lformat!(Timex.Types.valid_datetime(), String.t(), String.t(), atom() | nil) ::
  String.t() | no_return()

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string, locale, and formatter. If the locale does not have translations, "en" will be used by default.

If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter

If an error is encountered during formatting, lformat! will raise

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lformat(date, format_string, locale, formatter \\ Default)

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@spec lformat(Timex.Types.valid_datetime(), String.t(), String.t(), atom() | nil) ::
  {:ok, String.t()} | {:error, term()}

Formats a Date, DateTime, or NaiveDateTime as a string, using the provided format string, locale, and formatter.

If the locale provided does not have translations, "en" is used by default.

If a formatter is not provided, the formatter used is Timex.Format.DateTime.Formatters.DefaultFormatter

Link to this function

validate(format_string, formatter \\ Default)

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@spec validate(String.t(), atom() | nil) :: :ok | {:error, term()}

Validates the provided format string, using the provided formatter, or if none is provided, the default formatter. Returns :ok when valid, or {:error, reason} if not valid.