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// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************** * Copyright (C) 1997-2015, International Business Machines * Corporation and others. All Rights Reserved. ******************************************************************************** */ #ifndef FILTEREDBRK_H #define FILTEREDBRK_H #include "unicode/utypes.h" #include "unicode/brkiter.h" #if !UCONFIG_NO_BREAK_ITERATION && !UCONFIG_NO_FILTERED_BREAK_ITERATION U_NAMESPACE_BEGIN /** * \file * \brief C++ API: FilteredBreakIteratorBuilder */ /** * 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 */ class U_COMMON_API FilteredBreakIteratorBuilder : public UObject { public: /** * destructor. * @stable ICU 56 */ virtual ~FilteredBreakIteratorBuilder(); /** * 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. * @param where the locale. * @param status The error code. * @return the new builder * @stable ICU 56 */ static FilteredBreakIteratorBuilder *createInstance(const Locale& where, UErrorCode& status); #ifndef U_HIDE_DEPRECATED_API /** * This function has been deprecated in favor of createEmptyInstance, which has * identical behavior. * @param status The error code. * @return the new builder * @deprecated ICU 60 use createEmptyInstance instead * @see createEmptyInstance() */ static FilteredBreakIteratorBuilder *createInstance(UErrorCode &status); #endif /* U_HIDE_DEPRECATED_API */ /** * Construct an empty FilteredBreakIteratorBuilder. * In this state, it will not suppress any segment boundaries. * @param status The error code. * @return the new builder * @stable ICU 60 */ static FilteredBreakIteratorBuilder *createEmptyInstance(UErrorCode &status); /** * 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. * @param string the string to suppress, such as "Mr." * @param status error code * @return 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 */ virtual UBool suppressBreakAfter(const UnicodeString& string, UErrorCode& status) = 0; /** * 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. * @param string the exception to remove * @param status error code * @return 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 */ virtual UBool unsuppressBreakAfter(const UnicodeString& string, UErrorCode& status) = 0; /** * This function has been deprecated in favor of wrapIteratorWithFilter() * The behavior is identical. * @param adoptBreakIterator the break iterator to adopt * @param status error code * @return the new BreakIterator, owned by the caller. * @deprecated ICU 60 use wrapIteratorWithFilter() instead * @see wrapBreakIteratorWithFilter() */ virtual BreakIterator *build(BreakIterator* adoptBreakIterator, UErrorCode& status) = 0; /** * 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() * @param adoptBreakIterator the break iterator to adopt * @param status error code * @return the new BreakIterator, owned by the caller. * @stable ICU 60 */ inline BreakIterator *wrapIteratorWithFilter(BreakIterator* adoptBreakIterator, UErrorCode& status) { return build(adoptBreakIterator, status); } protected: /** * For subclass use * @stable ICU 56 */ FilteredBreakIteratorBuilder(); }; U_NAMESPACE_END #endif // #if !UCONFIG_NO_BREAK_ITERATION && !UCONFIG_NO_FILTERED_BREAK_ITERATION #endif // #ifndef FILTEREDBRK_H
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