1/* 2******************************************************************************** 3* Copyright (C) 1996-2008, International Business Machines 4* Corporation and others. All Rights Reserved. 5******************************************************************************** 6*/ 7 8#include "unicode/utypes.h" 9 10#if !UCONFIG_NO_BREAK_ITERATION 11 12#include "unicode/ubrk.h" 13 14#include "unicode/brkiter.h" 15#include "unicode/uloc.h" 16#include "unicode/ustring.h" 17#include "unicode/uchriter.h" 18#include "unicode/rbbi.h" 19#include "rbbirb.h" 20#include "uassert.h" 21 22U_NAMESPACE_USE 23 24//------------------------------------------------------------------------------ 25// 26// ubrk_open Create a canned type of break iterator based on type (word, line, etc.) 27// and locale. 28// 29//------------------------------------------------------------------------------ 30U_CAPI UBreakIterator* U_EXPORT2 31ubrk_open(UBreakIteratorType type, 32 const char *locale, 33 const UChar *text, 34 int32_t textLength, 35 UErrorCode *status) 36{ 37 38 if(U_FAILURE(*status)) return 0; 39 40 BreakIterator *result = 0; 41 42 switch(type) { 43 44 case UBRK_CHARACTER: 45 result = BreakIterator::createCharacterInstance(Locale(locale), *status); 46 break; 47 48 case UBRK_WORD: 49 result = BreakIterator::createWordInstance(Locale(locale), *status); 50 break; 51 52 case UBRK_LINE: 53 result = BreakIterator::createLineInstance(Locale(locale), *status); 54 break; 55 56 case UBRK_SENTENCE: 57 result = BreakIterator::createSentenceInstance(Locale(locale), *status); 58 break; 59 60 case UBRK_TITLE: 61 result = BreakIterator::createTitleInstance(Locale(locale), *status); 62 break; 63 64 default: 65 *status = U_ILLEGAL_ARGUMENT_ERROR; 66 } 67 68 // check for allocation error 69 if (U_FAILURE(*status)) { 70 return 0; 71 } 72 if(result == 0) { 73 *status = U_MEMORY_ALLOCATION_ERROR; 74 return 0; 75 } 76 77 78 UBreakIterator *uBI = (UBreakIterator *)result; 79 if (text != NULL) { 80 ubrk_setText(uBI, text, textLength, status); 81 } 82 return uBI; 83} 84 85 86 87//------------------------------------------------------------------------------ 88// 89// ubrk_openRules open a break iterator from a set of break rules. 90// Invokes the rule builder. 91// 92//------------------------------------------------------------------------------ 93U_CAPI UBreakIterator* U_EXPORT2 94ubrk_openRules( const UChar *rules, 95 int32_t rulesLength, 96 const UChar *text, 97 int32_t textLength, 98 UParseError *parseErr, 99 UErrorCode *status) { 100 101 if (status == NULL || U_FAILURE(*status)){ 102 return 0; 103 } 104 105 BreakIterator *result = 0; 106 UnicodeString ruleString(rules, rulesLength); 107 result = RBBIRuleBuilder::createRuleBasedBreakIterator(ruleString, parseErr, *status); 108 if(U_FAILURE(*status)) { 109 return 0; 110 } 111 112 UBreakIterator *uBI = (UBreakIterator *)result; 113 if (text != NULL) { 114 ubrk_setText(uBI, text, textLength, status); 115 } 116 return uBI; 117} 118 119 120 121 122 123U_CAPI UBreakIterator * U_EXPORT2 124ubrk_safeClone( 125 const UBreakIterator *bi, 126 void *stackBuffer, 127 int32_t *pBufferSize, 128 UErrorCode *status) 129{ 130 if (status == NULL || U_FAILURE(*status)){ 131 return 0; 132 } 133 if (!pBufferSize || !bi){ 134 *status = U_ILLEGAL_ARGUMENT_ERROR; 135 return 0; 136 } 137 // Clear any incoming Safe Clone Allocated warning. 138 // Propagating this through to our return would really 139 // confuse our caller. 140 if (*status==U_SAFECLONE_ALLOCATED_WARNING) { 141 *status = U_ZERO_ERROR; 142 } 143 return (UBreakIterator *)(((BreakIterator*)bi)-> 144 createBufferClone(stackBuffer, *pBufferSize, *status)); 145} 146 147 148 149U_CAPI void U_EXPORT2 150ubrk_close(UBreakIterator *bi) 151{ 152 BreakIterator *ubi = (BreakIterator*) bi; 153 if (ubi) { 154 if (ubi->isBufferClone()) { 155 ubi->~BreakIterator(); 156 *(uint32_t *)ubi = 0xdeadbeef; 157 } else { 158 delete ubi; 159 } 160 } 161} 162 163U_CAPI void U_EXPORT2 164ubrk_setText(UBreakIterator* bi, 165 const UChar* text, 166 int32_t textLength, 167 UErrorCode* status) 168{ 169 if (bi == NULL) { 170 if (U_SUCCESS(*status)) { 171 *status = U_ILLEGAL_ARGUMENT_ERROR; 172 } 173 return; 174 } 175 176 BreakIterator *brit = (BreakIterator *)bi; 177 UText ut = UTEXT_INITIALIZER; 178 utext_openUChars(&ut, text, textLength, status); 179 brit->setText(&ut, *status); 180 // A stack allocated UText wrapping a UCHar * string 181 // can be dumped without explicitly closing it. 182} 183 184 185 186U_CAPI void U_EXPORT2 187ubrk_setUText(UBreakIterator *bi, 188 UText *text, 189 UErrorCode *status) 190{ 191 if (bi == NULL) { 192 if (U_SUCCESS(*status)) { 193 *status = U_ILLEGAL_ARGUMENT_ERROR; 194 } 195 return; 196 } 197 198 RuleBasedBreakIterator *brit = (RuleBasedBreakIterator *)bi; 199 brit->RuleBasedBreakIterator::setText(text, *status); 200} 201 202 203 204 205 206U_CAPI int32_t U_EXPORT2 207ubrk_current(const UBreakIterator *bi) 208{ 209 210 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::current(); 211} 212 213U_CAPI int32_t U_EXPORT2 214ubrk_next(UBreakIterator *bi) 215{ 216 217 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::next(); 218} 219 220U_CAPI int32_t U_EXPORT2 221ubrk_previous(UBreakIterator *bi) 222{ 223 224 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::previous(); 225} 226 227U_CAPI int32_t U_EXPORT2 228ubrk_first(UBreakIterator *bi) 229{ 230 231 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::first(); 232} 233 234U_CAPI int32_t U_EXPORT2 235ubrk_last(UBreakIterator *bi) 236{ 237 238 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::last(); 239} 240 241U_CAPI int32_t U_EXPORT2 242ubrk_preceding(UBreakIterator *bi, 243 int32_t offset) 244{ 245 246 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::preceding(offset); 247} 248 249U_CAPI int32_t U_EXPORT2 250ubrk_following(UBreakIterator *bi, 251 int32_t offset) 252{ 253 254 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::following(offset); 255} 256 257U_CAPI const char* U_EXPORT2 258ubrk_getAvailable(int32_t index) 259{ 260 261 return uloc_getAvailable(index); 262} 263 264U_CAPI int32_t U_EXPORT2 265ubrk_countAvailable() 266{ 267 268 return uloc_countAvailable(); 269} 270 271 272U_CAPI UBool U_EXPORT2 273ubrk_isBoundary(UBreakIterator *bi, int32_t offset) 274{ 275 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::isBoundary(offset); 276} 277 278 279U_CAPI int32_t U_EXPORT2 280ubrk_getRuleStatus(UBreakIterator *bi) 281{ 282 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatus(); 283} 284 285U_CAPI int32_t U_EXPORT2 286ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status) 287{ 288 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatusVec(fillInVec, capacity, *status); 289} 290 291 292U_CAPI const char* U_EXPORT2 293ubrk_getLocaleByType(const UBreakIterator *bi, 294 ULocDataLocaleType type, 295 UErrorCode* status) 296{ 297 if (bi == NULL) { 298 if (U_SUCCESS(*status)) { 299 *status = U_ILLEGAL_ARGUMENT_ERROR; 300 } 301 return NULL; 302 } 303 return ((BreakIterator*)bi)->getLocaleID(type, *status); 304} 305 306 307#endif /* #if !UCONFIG_NO_BREAK_ITERATION */ 308