ICU 60.0.1  60.0.1
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ubrk.h File Reference

C API: BreakIterator. More...

#include "unicode/utypes.h"
#include "unicode/uloc.h"
#include "unicode/utext.h"
#include "unicode/localpointer.h"
#include "unicode/parseerr.h"

Go to the source code of this file.

Namespaces

 icu
 File coll.h.
 

Macros

#define UBRK_TYPEDEF_UBREAK_ITERATOR
 A text-break iterator. More...
 
#define UBRK_DONE   ((int32_t) -1)
 Value indicating all text boundaries have been returned. More...
 
#define U_BRK_SAFECLONE_BUFFERSIZE   1
 A recommended size (in bytes) for the memory buffer to be passed to ubrk_saveClone(). More...
 

Typedefs

typedef struct UBreakIterator UBreakIterator
 Opaque type representing an ICU Break iterator object. More...
 
typedef enum UBreakIteratorType UBreakIteratorType
 The possible types of text boundaries. More...
 
typedef enum UWordBreak UWordBreak
 Enum constants for the word break tags returned by getRuleStatus(). More...
 
typedef enum ULineBreakTag ULineBreakTag
 Enum constants for the line break tags returned by getRuleStatus(). More...
 
typedef enum USentenceBreakTag USentenceBreakTag
 Enum constants for the sentence break tags returned by getRuleStatus(). More...
 

Enumerations

enum  UBreakIteratorType {
  UBRK_CHARACTER = 0, UBRK_WORD = 1, UBRK_LINE = 2, UBRK_SENTENCE = 3,
  UBRK_TITLE = 4, UBRK_COUNT = 5
}
 The possible types of text boundaries. More...
 
enum  UWordBreak {
  UBRK_WORD_NONE = 0, UBRK_WORD_NONE_LIMIT = 100, UBRK_WORD_NUMBER = 100, UBRK_WORD_NUMBER_LIMIT = 200,
  UBRK_WORD_LETTER = 200, UBRK_WORD_LETTER_LIMIT = 300, UBRK_WORD_KANA = 300, UBRK_WORD_KANA_LIMIT = 400,
  UBRK_WORD_IDEO = 400, UBRK_WORD_IDEO_LIMIT = 500
}
 Enum constants for the word break tags returned by getRuleStatus(). More...
 
enum  ULineBreakTag { UBRK_LINE_SOFT = 0, UBRK_LINE_SOFT_LIMIT = 100, UBRK_LINE_HARD = 100, UBRK_LINE_HARD_LIMIT = 200 }
 Enum constants for the line break tags returned by getRuleStatus(). More...
 
enum  USentenceBreakTag { UBRK_SENTENCE_TERM = 0, UBRK_SENTENCE_TERM_LIMIT = 100, UBRK_SENTENCE_SEP = 100, UBRK_SENTENCE_SEP_LIMIT = 200 }
 Enum constants for the sentence break tags returned by getRuleStatus(). More...
 

Functions

UBreakIteratorubrk_open (UBreakIteratorType type, const char *locale, const UChar *text, int32_t textLength, UErrorCode *status)
 Open a new UBreakIterator for locating text boundaries for a specified locale. More...
 
UBreakIteratorubrk_openRules (const UChar *rules, int32_t rulesLength, const UChar *text, int32_t textLength, UParseError *parseErr, UErrorCode *status)
 Open a new UBreakIterator for locating text boundaries using specified breaking rules. More...
 
UBreakIteratorubrk_openBinaryRules (const uint8_t *binaryRules, int32_t rulesLength, const UChar *text, int32_t textLength, UErrorCode *status)
 Open a new UBreakIterator for locating text boundaries using precompiled binary rules. More...
 
UBreakIteratorubrk_safeClone (const UBreakIterator *bi, void *stackBuffer, int32_t *pBufferSize, UErrorCode *status)
 Thread safe cloning operation. More...
 
void ubrk_close (UBreakIterator *bi)
 Close a UBreakIterator. More...
 
void ubrk_setText (UBreakIterator *bi, const UChar *text, int32_t textLength, UErrorCode *status)
 Sets an existing iterator to point to a new piece of text. More...
 
void ubrk_setUText (UBreakIterator *bi, UText *text, UErrorCode *status)
 Sets an existing iterator to point to a new piece of text. More...
 
int32_t ubrk_current (const UBreakIterator *bi)
 Determine the most recently-returned text boundary. More...
 
int32_t ubrk_next (UBreakIterator *bi)
 Advance the iterator to the boundary following the current boundary. More...
 
int32_t ubrk_previous (UBreakIterator *bi)
 Set the iterator position to the boundary preceding the current boundary. More...
 
int32_t ubrk_first (UBreakIterator *bi)
 Set the iterator position to zero, the start of the text being scanned. More...
 
int32_t ubrk_last (UBreakIterator *bi)
 Set the iterator position to the index immediately beyond the last character in the text being scanned. More...
 
int32_t ubrk_preceding (UBreakIterator *bi, int32_t offset)
 Set the iterator position to the first boundary preceding the specified offset. More...
 
int32_t ubrk_following (UBreakIterator *bi, int32_t offset)
 Advance the iterator to the first boundary following the specified offset. More...
 
const char * ubrk_getAvailable (int32_t index)
 Get a locale for which text breaking information is available. More...
 
int32_t ubrk_countAvailable (void)
 Determine how many locales have text breaking information available. More...
 
UBool ubrk_isBoundary (UBreakIterator *bi, int32_t offset)
 Returns true if the specfied position is a boundary position. More...
 
int32_t ubrk_getRuleStatus (UBreakIterator *bi)
 Return the status from the break rule that determined the most recently returned break position. More...
 
int32_t ubrk_getRuleStatusVec (UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status)
 Get the statuses from the break rules that determined the most recently returned break position. More...
 
const char * ubrk_getLocaleByType (const UBreakIterator *bi, ULocDataLocaleType type, UErrorCode *status)
 Return the locale of the break iterator. More...
 
void ubrk_refreshUText (UBreakIterator *bi, UText *text, UErrorCode *status)
 Set the subject text string upon which the break iterator is operating without changing any other aspect of the state. More...
 
int32_t ubrk_getBinaryRules (UBreakIterator *bi, uint8_t *binaryRules, int32_t rulesCapacity, UErrorCode *status)
 Get a compiled binary version of the rules specifying the behavior of a UBreakIterator. More...
 

Detailed Description

C API: BreakIterator.

BreakIterator C API

The BreakIterator C API defines methods for finding the location of boundaries in text. Pointer to a UBreakIterator maintain a current position and scan over text returning the index of characters where boundaries occur.

Line boundary analysis determines where a text string can be broken when line-wrapping. The mechanism correctly handles punctuation and hyphenated words.

Note: The locale keyword "lb" can be used to modify line break behavior according to the CSS level 3 line-break options, see http://dev.w3.org/csswg/css-text/#line-breaking. For example: "ja@lb=strict", "zh@lb=loose".

Sentence boundary analysis allows selection with correct interpretation of periods within numbers and abbreviations, and trailing punctuation marks such as quotation marks and parentheses.

Note: The locale keyword "ss" can be used to enable use of segmentation suppression data (preventing breaks in English after abbreviations such as "Mr." or "Est.", for example), as follows: "en@ss=standard".

Word boundary analysis is used by search and replace functions, as well as within text editing applications that allow the user to select words with a double click. Word selection provides correct interpretation of punctuation marks within and following words. Characters that are not part of a word, such as symbols or punctuation marks, have word-breaks on both sides.

Character boundary analysis identifies the boundaries of "Extended Grapheme Clusters", which are groupings of codepoints that should be treated as character-like units for many text operations. Please see Unicode Standard Annex #29, Unicode Text Segmentation, http://www.unicode.org/reports/tr29/ for additional information on grapheme clusters and guidelines on their use.

Title boundary analysis locates all positions, typically starts of words, that should be set to Title Case when title casing the text.

The text boundary positions are found according to the rules described in Unicode Standard Annex #29, Text Boundaries, and Unicode Standard Annex #14, Line Breaking Properties. These are available at http://www.unicode.org/reports/tr14/ and http://www.unicode.org/reports/tr29/.

In addition to the plain C API defined in this header file, an object oriented C++ API with equivalent functionality is defined in the file brkiter.h.

Code snippets illustrating the use of the Break Iterator APIs are available in the ICU User Guide, http://icu-project.org/userguide/boundaryAnalysis.html and in the sample program icu/source/samples/break/break.cpp

Definition in file ubrk.h.

Macro Definition Documentation

#define U_BRK_SAFECLONE_BUFFERSIZE   1

A recommended size (in bytes) for the memory buffer to be passed to ubrk_saveClone().

Deprecated:
ICU 52. Do not rely on ubrk_safeClone() cloning into any provided buffer.

Definition at line 329 of file ubrk.h.

#define UBRK_DONE   ((int32_t) -1)

Value indicating all text boundaries have been returned.

Stable:
ICU 2.0

Definition at line 130 of file ubrk.h.

#define UBRK_TYPEDEF_UBREAK_ITERATOR

A text-break iterator.

For usage in C programs.

Definition at line 23 of file ubrk.h.

Typedef Documentation

Opaque type representing an ICU Break iterator object.

Stable:
ICU 2.0

Definition at line 28 of file ubrk.h.

The possible types of text boundaries.

Stable:
ICU 2.0

Enum constants for the line break tags returned by getRuleStatus().

A range of values is defined for each category of word, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.8

Enum constants for the sentence break tags returned by getRuleStatus().

A range of values is defined for each category of sentence, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.8
typedef enum UWordBreak UWordBreak

Enum constants for the word break tags returned by getRuleStatus().

A range of values is defined for each category of word, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.2

Enumeration Type Documentation

The possible types of text boundaries.

Stable:
ICU 2.0
Enumerator
UBRK_CHARACTER 

Character breaks.

Stable:
ICU 2.0
UBRK_WORD 

Word breaks.

Stable:
ICU 2.0
UBRK_LINE 

Line breaks.

Stable:
ICU 2.0
UBRK_SENTENCE 

Sentence breaks.

Stable:
ICU 2.0
UBRK_TITLE 

Title Case breaks The iterator created using this type locates title boundaries as described for Unicode 3.2 only.

For Unicode 4.0 and above title boundary iteration, please use Word Boundary iterator.

Deprecated:
ICU 2.8 Use the word break iterator for titlecasing for Unicode 4 and later.
UBRK_COUNT 

One more than the highest normal UBreakIteratorType value.

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

Definition at line 99 of file ubrk.h.

Enum constants for the line break tags returned by getRuleStatus().

A range of values is defined for each category of word, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.8
Enumerator
UBRK_LINE_SOFT 

Tag value for soft line breaks, positions at which a line break is acceptable but not required.

UBRK_LINE_SOFT_LIMIT 

Upper bound for soft line breaks.

UBRK_LINE_HARD 

Tag value for a hard, or mandatory line break.

UBRK_LINE_HARD_LIMIT 

Upper bound for hard line breaks.

Definition at line 180 of file ubrk.h.

Enum constants for the sentence break tags returned by getRuleStatus().

A range of values is defined for each category of sentence, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.8
Enumerator
UBRK_SENTENCE_TERM 

Tag value for for sentences ending with a sentence terminator ('.

', '?', '!', etc.) character, possibly followed by a hard separator (CR, LF, PS, etc.)

UBRK_SENTENCE_TERM_LIMIT 

Upper bound for tags for sentences ended by sentence terminators.

UBRK_SENTENCE_SEP 

Tag value for for sentences that do not contain an ending sentence terminator ('.

', '?', '!', etc.) character, but are ended only by a hard separator (CR, LF, PS, etc.) or end of input.

UBRK_SENTENCE_SEP_LIMIT 

Upper bound for tags for sentences ended by a separator.

Definition at line 205 of file ubrk.h.

enum UWordBreak

Enum constants for the word break tags returned by getRuleStatus().

A range of values is defined for each category of word, to allow for further subdivisions of a category in future releases. Applications should check for tag values falling within the range, rather than for single individual values.

The numeric values of all of these constants are stable (will not change).

Stable:
ICU 2.2
Enumerator
UBRK_WORD_NONE 

Tag value for "words" that do not fit into any of other categories.

Includes spaces and most punctuation.

UBRK_WORD_NONE_LIMIT 

Upper bound for tags for uncategorized words.

UBRK_WORD_NUMBER 

Tag value for words that appear to be numbers, lower limit.

UBRK_WORD_NUMBER_LIMIT 

Tag value for words that appear to be numbers, upper limit.

UBRK_WORD_LETTER 

Tag value for words that contain letters, excluding hiragana, katakana or ideographic characters, lower limit.

UBRK_WORD_LETTER_LIMIT 

Tag value for words containing letters, upper limit.

UBRK_WORD_KANA 

Tag value for words containing kana characters, lower limit.

UBRK_WORD_KANA_LIMIT 

Tag value for words containing kana characters, upper limit.

UBRK_WORD_IDEO 

Tag value for words containing ideographic characters, lower limit.

UBRK_WORD_IDEO_LIMIT 

Tag value for words containing ideographic characters, upper limit.

Definition at line 144 of file ubrk.h.

Function Documentation

void ubrk_close ( UBreakIterator bi)

Close a UBreakIterator.

Once closed, a UBreakIterator may no longer be used.

Parameters
biThe break iterator to close.
Stable:
ICU 2.0
int32_t ubrk_countAvailable ( void  )

Determine how many locales have text breaking information available.

This function is most useful as determining the loop ending condition for calls to ubrk_getAvailable.

Returns
The number of locales for which text breaking information is available.
See also
ubrk_getAvailable
Stable:
ICU 2.0
int32_t ubrk_current ( const UBreakIterator bi)

Determine the most recently-returned text boundary.

Parameters
biThe break iterator to use.
Returns
The character index most recently returned by ubrk_next, ubrk_previous, ubrk_first, or ubrk_last.
Stable:
ICU 2.0
int32_t ubrk_first ( UBreakIterator bi)

Set the iterator position to zero, the start of the text being scanned.

Parameters
biThe break iterator to use.
Returns
The new iterator position (zero).
See also
ubrk_last
Stable:
ICU 2.0
int32_t ubrk_following ( UBreakIterator bi,
int32_t  offset 
)

Advance the iterator to the first boundary following the specified offset.

The value returned is always greater than offset, or UBRK_DONE.

Parameters
biThe break iterator to use.
offsetThe offset to begin scanning.
Returns
The text boundary following offset, or UBRK_DONE.
See also
ubrk_preceding
Stable:
ICU 2.0
const char* ubrk_getAvailable ( int32_t  index)

Get a locale for which text breaking information is available.

A UBreakIterator in a locale returned by this function will perform the correct text breaking for the locale.

Parameters
indexThe index of the desired locale.
Returns
A locale for which number text breaking information is available, or 0 if none.
See also
ubrk_countAvailable
Stable:
ICU 2.0
int32_t ubrk_getBinaryRules ( UBreakIterator bi,
uint8_t *  binaryRules,
int32_t  rulesCapacity,
UErrorCode status 
)

Get a compiled binary version of the rules specifying the behavior of a UBreakIterator.

The binary rules may be used with ubrk_openBinaryRules to open a new UBreakIterator more quickly than using ubrk_openRules. The compiled rules are not compatible across different major versions of ICU, nor across platforms of different endianness or different base character set family (ASCII vs EBCDIC). Supports preflighting (with binaryRules=NULL and rulesCapacity=0) to get the rules length without copying them to the binaryRules buffer. However, whether preflighting or not, if the actual length is greater than INT32_MAX, then the function returns 0 and sets *status to U_INDEX_OUTOFBOUNDS_ERROR.

Parameters
biThe break iterator to use.
binaryRulesBuffer to receive the compiled binary rules; set to NULL for preflighting.
rulesCapacityCapacity (in bytes) of the binaryRules buffer; set to 0 for preflighting. Must be >= 0.
statusPointer to UErrorCode to receive any errors, such as U_BUFFER_OVERFLOW_ERROR, U_INDEX_OUTOFBOUNDS_ERROR, or U_ILLEGAL_ARGUMENT_ERROR.
Returns
The actual byte length of the binary rules, if <= INT32_MAX; otherwise 0. If not preflighting and this is larger than rulesCapacity, *status will be set to an error.
See also
ubrk_openBinaryRules
Draft:
This API may be changed in the future versions and was introduced in ICU 59
const char* ubrk_getLocaleByType ( const UBreakIterator bi,
ULocDataLocaleType  type,
UErrorCode status 
)

Return the locale of the break iterator.

You can choose between the valid and the actual locale.

Parameters
bibreak iterator
typelocale type (valid or actual)
statuserror code
Returns
locale string
Stable:
ICU 2.8
int32_t ubrk_getRuleStatus ( UBreakIterator bi)

Return the status from the break rule that determined the most recently returned break position.

The values appear in the rule source within brackets, {123}, for example. For rules that do not specify a status, a default value of 0 is returned.

For word break iterators, the possible values are defined in enum UWordBreak.

Stable:
ICU 2.2
int32_t ubrk_getRuleStatusVec ( UBreakIterator bi,
int32_t *  fillInVec,
int32_t  capacity,
UErrorCode status 
)

Get the statuses from the break rules that determined the most recently returned break position.

The values appear in the rule source within brackets, {123}, for example. The default status value for rules that do not explicitly provide one is zero.

For word break iterators, the possible values are defined in enum UWordBreak.

Parameters
biThe break iterator to use
fillInVecan array to be filled in with the status values.
capacitythe length of the supplied vector. A length of zero causes the function to return the number of status values, in the normal way, without attemtping to store any values.
statusreceives error codes.
Returns
The number of rule status values from rules that determined the most recent boundary returned by the break iterator.
Stable:
ICU 3.0
UBool ubrk_isBoundary ( UBreakIterator bi,
int32_t  offset 
)

Returns true if the specfied position is a boundary position.

As a side effect, leaves the iterator pointing to the first boundary position at or after "offset".

Parameters
biThe break iterator to use.
offsetthe offset to check.
Returns
True if "offset" is a boundary position.
Stable:
ICU 2.0
int32_t ubrk_last ( UBreakIterator bi)

Set the iterator position to the index immediately beyond the last character in the text being scanned.

This is not the same as the last character.

Parameters
biThe break iterator to use.
Returns
The character offset immediately beyond the last character in the text being scanned.
See also
ubrk_first
Stable:
ICU 2.0
int32_t ubrk_next ( UBreakIterator bi)

Advance the iterator to the boundary following the current boundary.

Parameters
biThe break iterator to use.
Returns
The character index of the next text boundary, or UBRK_DONE if all text boundaries have been returned.
See also
ubrk_previous
Stable:
ICU 2.0
UBreakIterator* ubrk_open ( UBreakIteratorType  type,
const char *  locale,
const UChar text,
int32_t  textLength,
UErrorCode status 
)

Open a new UBreakIterator for locating text boundaries for a specified locale.

A UBreakIterator may be used for detecting character, line, word, and sentence breaks in text.

Parameters
typeThe type of UBreakIterator to open: one of UBRK_CHARACTER, UBRK_WORD, UBRK_LINE, UBRK_SENTENCE
localeThe locale specifying the text-breaking conventions. Note that locale keys such as "lb" and "ss" may be used to modify text break behavior, see general discussion of BreakIterator C API.
textThe text to be iterated over.
textLengthThe number of characters in text, or -1 if null-terminated.
statusA UErrorCode to receive any errors.
Returns
A UBreakIterator for the specified locale.
See also
ubrk_openRules
Stable:
ICU 2.0
UBreakIterator* ubrk_openBinaryRules ( const uint8_t *  binaryRules,
int32_t  rulesLength,
const UChar text,
int32_t  textLength,
UErrorCode status 
)

Open a new UBreakIterator for locating text boundaries using precompiled binary rules.

Opening a UBreakIterator this way is substantially faster than using ubrk_openRules. Binary rules may be obtained using ubrk_getBinaryRules. The compiled rules are not compatible across different major versions of ICU, nor across platforms of different endianness or different base character set family (ASCII vs EBCDIC).

Parameters
binaryRulesA set of compiled binary rules specifying the text breaking conventions. Ownership of the storage containing the compiled rules remains with the caller of this function. The compiled rules must not be modified or deleted during the life of the break iterator.
rulesLengthThe length of binaryRules in bytes; must be >= 0.
textThe text to be iterated over. May be null, in which case ubrk_setText() is used to specify the text to be iterated.
textLengthThe number of characters in text, or -1 if null-terminated.
statusPointer to UErrorCode to receive any errors.
Returns
UBreakIterator for the specified rules.
See also
ubrk_getBinaryRules
Draft:
This API may be changed in the future versions and was introduced in ICU 59
UBreakIterator* ubrk_openRules ( const UChar rules,
int32_t  rulesLength,
const UChar text,
int32_t  textLength,
UParseError parseErr,
UErrorCode status 
)

Open a new UBreakIterator for locating text boundaries using specified breaking rules.

The rule syntax is ... (TBD)

Parameters
rulesA set of rules specifying the text breaking conventions.
rulesLengthThe number of characters in rules, or -1 if null-terminated.
textThe text to be iterated over. May be null, in which case ubrk_setText() is used to specify the text to be iterated.
textLengthThe number of characters in text, or -1 if null-terminated.
parseErrReceives position and context information for any syntax errors detected while parsing the rules.
statusA UErrorCode to receive any errors.
Returns
A UBreakIterator for the specified rules.
See also
ubrk_open
Stable:
ICU 2.2
int32_t ubrk_preceding ( UBreakIterator bi,
int32_t  offset 
)

Set the iterator position to the first boundary preceding the specified offset.

The new position is always smaller than offset, or UBRK_DONE.

Parameters
biThe break iterator to use.
offsetThe offset to begin scanning.
Returns
The text boundary preceding offset, or UBRK_DONE.
See also
ubrk_following
Stable:
ICU 2.0
int32_t ubrk_previous ( UBreakIterator bi)

Set the iterator position to the boundary preceding the current boundary.

Parameters
biThe break iterator to use.
Returns
The character index of the preceding text boundary, or UBRK_DONE if all text boundaries have been returned.
See also
ubrk_next
Stable:
ICU 2.0
void ubrk_refreshUText ( UBreakIterator bi,
UText text,
UErrorCode status 
)

Set the subject text string upon which the break iterator is operating without changing any other aspect of the state.

The new and previous text strings must have the same content.

This function is intended for use in environments where ICU is operating on strings that may move around in memory. It provides a mechanism for notifying ICU that the string has been relocated, and providing a new UText to access the string in its new position.

Note that the break iterator never copies the underlying text of a string being processed, but always operates directly on the original text provided by the user. Refreshing simply drops the references to the old text and replaces them with references to the new.

Caution: this function is normally used only by very specialized system-level code. One example use case is with garbage collection that moves the text in memory.

Parameters
biThe break iterator.
textThe new (moved) text string.
statusReceives errors detected by this function.
Stable:
ICU 49
UBreakIterator* ubrk_safeClone ( const UBreakIterator bi,
void *  stackBuffer,
int32_t *  pBufferSize,
UErrorCode status 
)

Thread safe cloning operation.

Parameters
biiterator to be cloned
stackBufferDeprecated functionality as of ICU 52, use NULL.
user allocated space for the new clone. If NULL new memory will be allocated. If buffer is not large enough, new memory will be allocated. Clients can use the U_BRK_SAFECLONE_BUFFERSIZE.
pBufferSizeDeprecated functionality as of ICU 52, use NULL or 1.
pointer to size of allocated space. If *pBufferSize == 0, a sufficient size for use in cloning will be returned ('pre-flighting') If *pBufferSize is not enough for a stack-based safe clone, new memory will be allocated.
statusto indicate whether the operation went on smoothly or there were errors An informational status value, U_SAFECLONE_ALLOCATED_ERROR, is used if any allocations were necessary.
Returns
pointer to the new clone
Stable:
ICU 2.0
void ubrk_setText ( UBreakIterator bi,
const UChar text,
int32_t  textLength,
UErrorCode status 
)

Sets an existing iterator to point to a new piece of text.

The break iterator retains a pointer to the supplied text. The caller must not modify or delete the text while the BreakIterator retains the reference.

Parameters
biThe iterator to use
textThe text to be set
textLengthThe length of the text
statusThe error code
Stable:
ICU 2.0
void ubrk_setUText ( UBreakIterator bi,
UText text,
UErrorCode status 
)

Sets an existing iterator to point to a new piece of text.

All index positions returned by break iterator functions are native indices from the UText. For example, when breaking UTF-8 encoded text, the break positions returned by ubrk_next, ubrk_previous, etc. will be UTF-8 string indices, not UTF-16 positions.

Parameters
biThe iterator to use
textThe text to be set. This function makes a shallow clone of the supplied UText. This means that the caller is free to immediately close or otherwise reuse the UText that was passed as a parameter, but that the underlying text itself must not be altered while being referenced by the break iterator.
statusThe error code
Stable:
ICU 3.4