ICU 74.2: icu::FilteredBreakIteratorBuilder Class Reference

ICU 74.2 74.2

Public Member Functions | Static Public Member Functions | Protected Member Functions
icu::FilteredBreakIteratorBuilder Class Referenceabstract

The BreakIteratorFilter is used to modify the behavior of a BreakIterator by constructing a new BreakIterator which suppresses certain segment boundaries. More...

`#include <filteredbrk.h>`

Inheritance diagram for icu::FilteredBreakIteratorBuilder:

## Public Member Functions
virtual | ~FilteredBreakIteratorBuilder ()
| destructor.
virtual UBool | suppressBreakAfter (const UnicodeString &string, UErrorCode &status)=0
| Suppress a certain string from being the end of a segment.
virtual UBool | unsuppressBreakAfter (const UnicodeString &string, UErrorCode &status)=0
| Stop suppressing a certain string from being the end of the segment.
virtual BreakIterator * | build (BreakIterator *adoptBreakIterator, UErrorCode &status)=0
| This function has been deprecated in favor of wrapIteratorWithFilter() The behavior is identical.
BreakIterator * | wrapIteratorWithFilter (BreakIterator *adoptBreakIterator, UErrorCode &status)
| Wrap (adopt) an existing break iterator in a new filtered instance.
Public Member Functions inherited from icu::UObject
virtual | ~UObject ()
| Destructor.
virtual UClassID | getDynamicClassID () const
| ICU4C "poor man's RTTI", returns a UClassID for the actual ICU class.

## Static Public Member Functions
static FilteredBreakIteratorBuilder * | createInstance (const Locale &where, UErrorCode &status)
| Construct a FilteredBreakIteratorBuilder based on rules in a locale.
static FilteredBreakIteratorBuilder * | createInstance (UErrorCode &status)
| This function has been deprecated in favor of createEmptyInstance, which has identical behavior.
static FilteredBreakIteratorBuilder * | createEmptyInstance (UErrorCode &status)
| Construct an empty FilteredBreakIteratorBuilder.

## Protected Member Functions
| FilteredBreakIteratorBuilder ()
| For subclass use.

## Detailed Description

The BreakIteratorFilter is used to modify the behavior of a BreakIterator by constructing a new BreakIterator which suppresses certain segment boundaries.

See http://www.unicode.org/reports/tr35/tr35-general.html#Segmentation_Exceptions . For example, a typical English Sentence Break Iterator would break on the space in the string "Mr. Smith" (resulting in two segments), but with "Mr." as an exception, a filtered break iterator would consider the string "Mr. Smith" to be a single segment.

Stable:
  ICU 56

Definition at line 39 of file filteredbrk.h.

## Constructor & Destructor Documentation

## ◆ ~FilteredBreakIteratorBuilder()

virtual icu::FilteredBreakIteratorBuilder::~FilteredBreakIteratorBuilder | ( |  | ) |
| virtual

destructor.

Stable:
  ICU 56

## ◆ FilteredBreakIteratorBuilder()

icu::FilteredBreakIteratorBuilder::FilteredBreakIteratorBuilder | ( |  | ) |
| protected

For subclass use.

Stable:
  ICU 56

## Member Function Documentation

## ◆ build()

virtual BreakIterator * icu::FilteredBreakIteratorBuilder::build | ( | BreakIterator * | adoptBreakIterator,
|  | UErrorCode & | status
| ) |  |
| pure virtual

This function has been deprecated in favor of wrapIteratorWithFilter() The behavior is identical.

Parameters

  adoptBreakIterator | the break iterator to adopt
  status | error code

Returns
  the new BreakIterator, owned by the caller.

Deprecated:
  ICU 60 use wrapIteratorWithFilter() instead

See also
  wrapBreakIteratorWithFilter()

## ◆ createEmptyInstance()

static FilteredBreakIteratorBuilder * icu::FilteredBreakIteratorBuilder::createEmptyInstance | ( | UErrorCode & | status | ) |
| static

Construct an empty FilteredBreakIteratorBuilder.

In this state, it will not suppress any segment boundaries.

Parameters

  status | The error code.

Returns
  the new builder

Stable:
  ICU 60

## ◆ createInstance() [1/2]

static FilteredBreakIteratorBuilder * icu::FilteredBreakIteratorBuilder::createInstance | ( | const Locale & | where,
|  | UErrorCode & | status
| ) |  |
| static

Construct a FilteredBreakIteratorBuilder based on rules in a locale.

The rules are taken from CLDR exception data for the locale, see http://www.unicode.org/reports/tr35/tr35-general.html#Segmentation_Exceptions This is the equivalent of calling createInstance(UErrorCode&) and then repeatedly calling addNoBreakAfter(...) with the contents of the CLDR exception data.

Parameters

  where | the locale.
  status | The error code.

Returns
  the new builder

Stable:
  ICU 56

## ◆ createInstance() [2/2]

static FilteredBreakIteratorBuilder * icu::FilteredBreakIteratorBuilder::createInstance | ( | UErrorCode & | status | ) |
| static

This function has been deprecated in favor of createEmptyInstance, which has identical behavior.

Parameters

  status | The error code.

Returns
  the new builder

Deprecated:
  ICU 60 use createEmptyInstance instead

See also
  createEmptyInstance()

## ◆ suppressBreakAfter()

virtual UBool icu::FilteredBreakIteratorBuilder::suppressBreakAfter | ( | const UnicodeString & | string,
|  | UErrorCode & | status
| ) |  |
| pure virtual

Suppress a certain string from being the end of a segment.

For example, suppressing "Mr.", then segments ending in "Mr." will not be returned by the iterator.

Parameters

  string | the string to suppress, such as "Mr."
  status | error code

Returns
  returns true if the string was not present and now added, false if the call was a no-op because the string was already being suppressed.

Stable:
  ICU 56

## ◆ unsuppressBreakAfter()

virtual UBool icu::FilteredBreakIteratorBuilder::unsuppressBreakAfter | ( | const UnicodeString & | string,
|  | UErrorCode & | status
| ) |  |
| pure virtual

Stop suppressing a certain string from being the end of the segment.

This function does not create any new segment boundaries, but only serves to un-do the effect of earlier calls to suppressBreakAfter, or to un-do the effect of locale data which may be suppressing certain strings.

Parameters

  string | the exception to remove
  status | error code

Returns
  returns true if the string was present and now removed, false if the call was a no-op because the string was not being suppressed.

Stable:
  ICU 56

## ◆ wrapIteratorWithFilter()

BreakIterator * icu::FilteredBreakIteratorBuilder::wrapIteratorWithFilter | ( | BreakIterator * | adoptBreakIterator,
|  | UErrorCode & | status
| ) |  |
| inline

Wrap (adopt) an existing break iterator in a new filtered instance.

The resulting BreakIterator is owned by the caller. The BreakIteratorFilter may be destroyed before the BreakIterator is destroyed. Note that the adoptBreakIterator is adopted by the new BreakIterator and should no longer be used by the caller. The FilteredBreakIteratorBuilder may be reused. This function is an alias for build()

Parameters

  adoptBreakIterator | the break iterator to adopt
  status | error code

Returns
  the new BreakIterator, owned by the caller.

Stable:
  ICU 60

Definition at line 133 of file filteredbrk.h.

The documentation for this class was generated from the following file:

- common/unicode/filteredbrk.h