/*
********************************************************************************
* Copyright (C) 1996-2008, International Business Machines
* Corporation and others. All Rights Reserved.
********************************************************************************
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_BREAK_ITERATION
#include "unicode/ubrk.h"
#include "unicode/brkiter.h"
#include "unicode/uloc.h"
#include "unicode/ustring.h"
#include "unicode/uchriter.h"
#include "unicode/rbbi.h"
#include "rbbirb.h"
#include "uassert.h"
U_NAMESPACE_USE
//------------------------------------------------------------------------------
//
// ubrk_open Create a canned type of break iterator based on type (word, line, etc.)
// and locale.
//
//------------------------------------------------------------------------------
U_CAPI UBreakIterator* U_EXPORT2
ubrk_open(UBreakIteratorType type,
const char *locale,
const UChar *text,
int32_t textLength,
UErrorCode *status)
{
if(U_FAILURE(*status)) return 0;
BreakIterator *result = 0;
switch(type) {
case UBRK_CHARACTER:
result = BreakIterator::createCharacterInstance(Locale(locale), *status);
break;
case UBRK_WORD:
result = BreakIterator::createWordInstance(Locale(locale), *status);
break;
case UBRK_LINE:
result = BreakIterator::createLineInstance(Locale(locale), *status);
break;
case UBRK_SENTENCE:
result = BreakIterator::createSentenceInstance(Locale(locale), *status);
break;
case UBRK_TITLE:
result = BreakIterator::createTitleInstance(Locale(locale), *status);
break;
default:
*status = U_ILLEGAL_ARGUMENT_ERROR;
}
// check for allocation error
if (U_FAILURE(*status)) {
return 0;
}
if(result == 0) {
*status = U_MEMORY_ALLOCATION_ERROR;
return 0;
}
UBreakIterator *uBI = (UBreakIterator *)result;
if (text != NULL) {
ubrk_setText(uBI, text, textLength, status);
}
return uBI;
}
//------------------------------------------------------------------------------
//
// ubrk_openRules open a break iterator from a set of break rules.
// Invokes the rule builder.
//
//------------------------------------------------------------------------------
U_CAPI UBreakIterator* U_EXPORT2
ubrk_openRules( const UChar *rules,
int32_t rulesLength,
const UChar *text,
int32_t textLength,
UParseError *parseErr,
UErrorCode *status) {
if (status == NULL || U_FAILURE(*status)){
return 0;
}
BreakIterator *result = 0;
UnicodeString ruleString(rules, rulesLength);
result = RBBIRuleBuilder::createRuleBasedBreakIterator(ruleString, parseErr, *status);
if(U_FAILURE(*status)) {
return 0;
}
UBreakIterator *uBI = (UBreakIterator *)result;
if (text != NULL) {
ubrk_setText(uBI, text, textLength, status);
}
return uBI;
}
U_CAPI UBreakIterator * U_EXPORT2
ubrk_safeClone(
const UBreakIterator *bi,
void *stackBuffer,
int32_t *pBufferSize,
UErrorCode *status)
{
if (status == NULL || U_FAILURE(*status)){
return 0;
}
if (!pBufferSize || !bi){
*status = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
// Clear any incoming Safe Clone Allocated warning.
// Propagating this through to our return would really
// confuse our caller.
if (*status==U_SAFECLONE_ALLOCATED_WARNING) {
*status = U_ZERO_ERROR;
}
return (UBreakIterator *)(((BreakIterator*)bi)->
createBufferClone(stackBuffer, *pBufferSize, *status));
}
U_CAPI void U_EXPORT2
ubrk_close(UBreakIterator *bi)
{
BreakIterator *ubi = (BreakIterator*) bi;
if (ubi) {
if (ubi->isBufferClone()) {
ubi->~BreakIterator();
*(uint32_t *)ubi = 0xdeadbeef;
} else {
delete ubi;
}
}
}
U_CAPI void U_EXPORT2
ubrk_setText(UBreakIterator* bi,
const UChar* text,
int32_t textLength,
UErrorCode* status)
{
if (bi == NULL) {
if (U_SUCCESS(*status)) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
}
return;
}
BreakIterator *brit = (BreakIterator *)bi;
UText ut = UTEXT_INITIALIZER;
utext_openUChars(&ut, text, textLength, status);
brit->setText(&ut, *status);
// A stack allocated UText wrapping a UCHar * string
// can be dumped without explicitly closing it.
}
U_CAPI void U_EXPORT2
ubrk_setUText(UBreakIterator *bi,
UText *text,
UErrorCode *status)
{
if (bi == NULL) {
if (U_SUCCESS(*status)) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
}
return;
}
RuleBasedBreakIterator *brit = (RuleBasedBreakIterator *)bi;
brit->RuleBasedBreakIterator::setText(text, *status);
}
U_CAPI int32_t U_EXPORT2
ubrk_current(const UBreakIterator *bi)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::current();
}
U_CAPI int32_t U_EXPORT2
ubrk_next(UBreakIterator *bi)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::next();
}
U_CAPI int32_t U_EXPORT2
ubrk_previous(UBreakIterator *bi)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::previous();
}
U_CAPI int32_t U_EXPORT2
ubrk_first(UBreakIterator *bi)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::first();
}
U_CAPI int32_t U_EXPORT2
ubrk_last(UBreakIterator *bi)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::last();
}
U_CAPI int32_t U_EXPORT2
ubrk_preceding(UBreakIterator *bi,
int32_t offset)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::preceding(offset);
}
U_CAPI int32_t U_EXPORT2
ubrk_following(UBreakIterator *bi,
int32_t offset)
{
return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::following(offset);
}
U_CAPI const char* U_EXPORT2
ubrk_getAvailable(int32_t index)
{
return uloc_getAvailable(index);
}
U_CAPI int32_t U_EXPORT2
ubrk_countAvailable()
{
return uloc_countAvailable();
}
U_CAPI UBool U_EXPORT2
ubrk_isBoundary(UBreakIterator *bi, int32_t offset)
{
return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::isBoundary(offset);
}
U_CAPI int32_t U_EXPORT2
ubrk_getRuleStatus(UBreakIterator *bi)
{
return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatus();
}
U_CAPI int32_t U_EXPORT2
ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status)
{
return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatusVec(fillInVec, capacity, *status);
}
U_CAPI const char* U_EXPORT2
ubrk_getLocaleByType(const UBreakIterator *bi,
ULocDataLocaleType type,
UErrorCode* status)
{
if (bi == NULL) {
if (U_SUCCESS(*status)) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
}
return NULL;
}
return ((BreakIterator*)bi)->getLocaleID(type, *status);
}
#endif /* #if !UCONFIG_NO_BREAK_ITERATION */