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ICU 77.1: i18n/unicode/ureldatefmt.h File Reference

C API: URelativeDateTimeFormatter, relative date formatting of unit + numeric offset. More...

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C API: URelativeDateTimeFormatter, relative date formatting of unit + numeric offset.

Provides simple formatting of relative dates, in two ways

• relative dates with a quantity e.g "in 5 days"
• relative dates without a quantity e.g "next Tuesday"

This does not provide compound formatting for multiple units, other than the ability to combine a time string with a relative date, as in "next Tuesday at 3:45 PM". It also does not provide support for determining which unit to use, such as deciding between "in 7 days" and "in 1 week".

Stable:

ICU 57

Definition in file ureldatefmt.h.

The formatting style.

Stable:

ICU 54

Opaque struct to contain the results of a URelativeDateTimeFormatter operation.

Stable:

ICU 64

Definition at line 254 of file ureldatefmt.h.

C typedef for struct URelativeDateTimeFormatter.

Stable:

ICU 57

Definition at line 1 of file ureldatefmt.h.

FieldPosition and UFieldPosition selectors for format fields defined by RelativeDateTimeFormatter.

Stable:

ICU 64

Represents the unit for formatting a relative date.

e.g "in 5 days" or "next year"

Stable:

ICU 57

The formatting style.

Stable:

ICU 54

Everything spelled out.

Stable:

ICU 54

Abbreviations used when possible.

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ICU 54

Use the shortest possible form.

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ICU 54

One more than the highest normal UDateRelativeDateTimeFormatterStyle value.

Deprecated:

ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 48 of file ureldatefmt.h.

FieldPosition and UFieldPosition selectors for format fields defined by RelativeDateTimeFormatter.

Stable:

ICU 64

Represents a literal text string, like "tomorrow" or "days ago".

Stable:

ICU 64

Represents a number quantity, like "3" in "3 days ago".

Stable:

ICU 64

Definition at line 186 of file ureldatefmt.h.

Represents the unit for formatting a relative date.

e.g "in 5 days" or "next year"

Stable:

ICU 57

Specifies that relative unit is year, e.g.

"last year", "in 5 years".

Stable:

ICU 57

Specifies that relative unit is quarter, e.g.

"last quarter", "in 5 quarters".

Stable:

ICU 57

Specifies that relative unit is month, e.g.

"last month", "in 5 months".

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ICU 57

Specifies that relative unit is week, e.g.

"last week", "in 5 weeks".

Stable:

ICU 57

Specifies that relative unit is day, e.g.

"yesterday", "in 5 days".

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ICU 57

Specifies that relative unit is hour, e.g.

"1 hour ago", "in 5 hours".

Stable:

ICU 57

Specifies that relative unit is minute, e.g.

"1 minute ago", "in 5 minutes".

Stable:

ICU 57

Specifies that relative unit is second, e.g.

"1 second ago", "in 5 seconds".

Stable:

ICU 57

Specifies that relative unit is Sunday, e.g.

"last Sunday", "this Sunday", "next Sunday", "in 5 Sundays".

Stable:

ICU 57

Specifies that relative unit is Monday, e.g.

"last Monday", "this Monday", "next Monday", "in 5 Mondays".

Stable:

ICU 57

Specifies that relative unit is Tuesday, e.g.

"last Tuesday", "this Tuesday", "next Tuesday", "in 5 Tuesdays".

Stable:

ICU 57

Specifies that relative unit is Wednesday, e.g.

"last Wednesday", "this Wednesday", "next Wednesday", "in 5 Wednesdays".

Stable:

ICU 57

Specifies that relative unit is Thursday, e.g.

"last Thursday", "this Thursday", "next Thursday", "in 5 Thursdays".

Stable:

ICU 57

Specifies that relative unit is Friday, e.g.

"last Friday", "this Friday", "next Friday", "in 5 Fridays".

Stable:

ICU 57

Specifies that relative unit is Saturday, e.g.

"last Saturday", "this Saturday", "next Saturday", "in 5 Saturdays".

Stable:

ICU 57

One more than the highest normal URelativeDateTimeUnit value.

Deprecated:

ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 81 of file ureldatefmt.h.

Close a URelativeDateTimeFormatter object.

Once closed it may no longer be used.

Parameters

reldatefmt The URelativeDateTimeFormatter object to close.

Stable:

ICU 57

Releases the UFormattedRelativeDateTime created by ureldatefmt_openResult.

Parameters

ufrdt The object to release.

Stable:

ICU 64

Combines a relative date string and a time string in this object's locale.

This is done with the same date-time separator used for the default calendar in this locale to produce a result such as "yesterday at 3:45 PM".

Parameters

reldatefmt The URelativeDateTimeFormatter object specifying the format conventions. relativeDateString The relative date string. relativeDateStringLen The length of relativeDateString; may be -1 if relativeDateString is zero-terminated. timeString The time string. timeStringLen The length of timeString; may be -1 if timeString is zero-terminated. result A pointer to a buffer to receive the formatted result. resultCapacity The maximum size of result. status A pointer to a UErrorCode to receive any errors. In case of error status, the contents of result are undefined.

Returns

The length of the formatted result; may be greater than resultCapacity, in which case an error is returned.

Stable:

ICU 57

Format a combination of URelativeDateTimeUnit and numeric offset using a text style if possible, e.g.

"last week", "this week", "next week", "yesterday", "tomorrow". Falls back to numeric style if no appropriate text term is available for the specified offset in the object's locale.

Parameters

reldatefmt The URelativeDateTimeFormatter object specifying the format conventions. offset The signed offset for the specified unit. unit The unit to use when formatting the relative date, e.g. UDAT_REL_UNIT_WEEK, UDAT_REL_UNIT_FRIDAY. result A pointer to a buffer to receive the formatted result. resultCapacity The maximum size of result. status A pointer to a UErrorCode to receive any errors. In case of error status, the contents of result are undefined.

Returns

The length of the formatted result; may be greater than resultCapacity, in which case an error is returned.

Stable:

ICU 57

Format a combination of URelativeDateTimeUnit and numeric offset using a numeric style, e.g.

"1 week ago", "in 1 week", "5 weeks ago", "in 5 weeks".

Parameters

reldatefmt The URelativeDateTimeFormatter object specifying the format conventions. offset The signed offset for the specified unit. This will be formatted according to this object's UNumberFormat object. unit The unit to use when formatting the relative date, e.g. UDAT_REL_UNIT_WEEK, UDAT_REL_UNIT_FRIDAY. result A pointer to a buffer to receive the formatted result. resultCapacity The maximum size of result. status A pointer to a UErrorCode to receive any errors. In case of error status, the contents of result are undefined.

Returns

The length of the formatted result; may be greater than resultCapacity, in which case an error is returned.

Stable:

ICU 57

Format a combination of URelativeDateTimeUnit and numeric offset using a numeric style, e.g.

"1 week ago", "in 1 week", "5 weeks ago", "in 5 weeks".

Parameters

reldatefmt The URelativeDateTimeFormatter object specifying the format conventions. offset The signed offset for the specified unit. This will be formatted according to this object's UNumberFormat object. unit The unit to use when formatting the relative date, e.g. UDAT_REL_UNIT_WEEK, UDAT_REL_UNIT_FRIDAY. result A pointer to a UFormattedRelativeDateTime to populate. status A pointer to a UErrorCode to receive any errors. In case of error status, the contents of result are undefined.

Stable:

ICU 64

Format a combination of URelativeDateTimeUnit and numeric offset using a text style if possible, e.g.

"last week", "this week", "next week", "yesterday", "tomorrow". Falls back to numeric style if no appropriate text term is available for the specified offset in the object's locale.

This method populates a UFormattedRelativeDateTime, which exposes more information than the string populated by format().

Parameters

reldatefmt The URelativeDateTimeFormatter object specifying the format conventions. offset The signed offset for the specified unit. unit The unit to use when formatting the relative date, e.g. UDAT_REL_UNIT_WEEK, UDAT_REL_UNIT_FRIDAY. result A pointer to a UFormattedRelativeDateTime to populate. status A pointer to a UErrorCode to receive any errors. In case of error status, the contents of result are undefined.

Stable:

ICU 64

Open a new URelativeDateTimeFormatter object for a given locale using the specified width and capitalizationContext, along with a number formatter (if desired) to override the default formatter that would be used for display of numeric field offsets.

The default formatter typically rounds toward 0 and has a minimum of 0 fraction digits and a maximum of 3 fraction digits (i.e. it will show as many decimal places as necessary up to 3, without showing trailing 0s).

Parameters

locale The locale nfToAdopt A number formatter to set for this URelativeDateTimeFormatter object (instead of the default decimal formatter). Ownership of this UNumberFormat object will pass to the URelativeDateTimeFormatter object (the URelativeDateTimeFormatter adopts the UNumberFormat), which becomes responsible for closing it. If the caller wishes to retain ownership of the UNumberFormat object, the caller must clone it (with unum_clone) and pass the clone to ureldatefmt_open. May be NULL to use the default decimal formatter. width The width - wide, short, narrow, etc. capitalizationContext A value from UDisplayContext that pertains to capitalization, e.g. UDISPCTX_CAPITALIZATION_FOR_BEGINNING_OF_SENTENCE. status A pointer to a UErrorCode to receive any errors.

Returns

A pointer to a URelativeDateTimeFormatter object for the specified locale, or NULL if an error occurred.

Stable:

ICU 57

Creates an object to hold the result of a URelativeDateTimeFormatter operation.

The object can be used repeatedly; it is cleared whenever passed to a format function.

Parameters

ec Set if an error occurs.

Returns

A pointer needing ownership.

Stable:

ICU 64

Returns a representation of a UFormattedRelativeDateTime as a UFormattedValue, which can be subsequently passed to any API requiring that type.

The returned object is owned by the UFormattedRelativeDateTime and is valid only as long as the UFormattedRelativeDateTime is present and unchanged in memory.

You can think of this method as a cast between types.

Parameters

ufrdt The object containing the formatted string. ec Set if an error occurs.

Returns

A UFormattedValue owned by the input object.

Stable:

ICU 64

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