1 /* 2 ******************************************************************************** 3 * Copyright (C) 1996-2015, 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 22 U_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 //------------------------------------------------------------------------------ 30 U_CAPI UBreakIterator* U_EXPORT2 31 ubrk_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 //------------------------------------------------------------------------------ 93 U_CAPI UBreakIterator* U_EXPORT2 94 ubrk_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 } 118 119 120 121 122 123 U_CAPI UBreakIterator * U_EXPORT2 124 ubrk_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 NULL; 132 } 133 if (bi == NULL) { 134 *status = U_ILLEGAL_ARGUMENT_ERROR; 135 return NULL; 136 } 137 if (pBufferSize != NULL) { 138 int32_t inputSize = *pBufferSize; 139 *pBufferSize = 1; 140 if (inputSize == 0) { 141 return NULL; // preflighting for deprecated functionality 142 } 143 } 144 BreakIterator *newBI = ((BreakIterator *)bi)->clone(); 145 if (newBI == NULL) { 146 *status = U_MEMORY_ALLOCATION_ERROR; 147 } else { 148 *status = U_SAFECLONE_ALLOCATED_WARNING; 149 } 150 return (UBreakIterator *)newBI; 151 } 152 153 154 155 U_CAPI void U_EXPORT2 156 ubrk_close(UBreakIterator *bi) 157 { 158 delete (BreakIterator *)bi; 159 } 160 161 U_CAPI void U_EXPORT2 162 ubrk_setText(UBreakIterator* bi, 163 const UChar* text, 164 int32_t textLength, 165 UErrorCode* status) 166 { 167 UText ut = UTEXT_INITIALIZER; 168 utext_openUChars(&ut, text, textLength, status); 169 ((BreakIterator*)bi)->setText(&ut, *status); 170 // A stack allocated UText wrapping a UChar * string 171 // can be dumped without explicitly closing it. 172 } 173 174 175 176 U_CAPI void U_EXPORT2 177 ubrk_setUText(UBreakIterator *bi, 178 UText *text, 179 UErrorCode *status) 180 { 181 ((BreakIterator*)bi)->setText(text, *status); 182 } 183 184 185 186 187 188 U_CAPI int32_t U_EXPORT2 189 ubrk_current(const UBreakIterator *bi) 190 { 191 192 return ((BreakIterator*)bi)->current(); 193 } 194 195 U_CAPI int32_t U_EXPORT2 196 ubrk_next(UBreakIterator *bi) 197 { 198 199 return ((BreakIterator*)bi)->next(); 200 } 201 202 U_CAPI int32_t U_EXPORT2 203 ubrk_previous(UBreakIterator *bi) 204 { 205 206 return ((BreakIterator*)bi)->previous(); 207 } 208 209 U_CAPI int32_t U_EXPORT2 210 ubrk_first(UBreakIterator *bi) 211 { 212 213 return ((BreakIterator*)bi)->first(); 214 } 215 216 U_CAPI int32_t U_EXPORT2 217 ubrk_last(UBreakIterator *bi) 218 { 219 220 return ((BreakIterator*)bi)->last(); 221 } 222 223 U_CAPI int32_t U_EXPORT2 224 ubrk_preceding(UBreakIterator *bi, 225 int32_t offset) 226 { 227 228 return ((BreakIterator*)bi)->preceding(offset); 229 } 230 231 U_CAPI int32_t U_EXPORT2 232 ubrk_following(UBreakIterator *bi, 233 int32_t offset) 234 { 235 236 return ((BreakIterator*)bi)->following(offset); 237 } 238 239 U_CAPI const char* U_EXPORT2 240 ubrk_getAvailable(int32_t index) 241 { 242 243 return uloc_getAvailable(index); 244 } 245 246 U_CAPI int32_t U_EXPORT2 247 ubrk_countAvailable() 248 { 249 250 return uloc_countAvailable(); 251 } 252 253 254 U_CAPI UBool U_EXPORT2 255 ubrk_isBoundary(UBreakIterator *bi, int32_t offset) 256 { 257 return ((BreakIterator*)bi)->isBoundary(offset); 258 } 259 260 261 U_CAPI int32_t U_EXPORT2 262 ubrk_getRuleStatus(UBreakIterator *bi) 263 { 264 return ((BreakIterator*)bi)->getRuleStatus(); 265 } 266 267 U_CAPI int32_t U_EXPORT2 268 ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status) 269 { 270 return ((BreakIterator*)bi)->getRuleStatusVec(fillInVec, capacity, *status); 271 } 272 273 274 U_CAPI const char* U_EXPORT2 275 ubrk_getLocaleByType(const UBreakIterator *bi, 276 ULocDataLocaleType type, 277 UErrorCode* status) 278 { 279 if (bi == NULL) { 280 if (U_SUCCESS(*status)) { 281 *status = U_ILLEGAL_ARGUMENT_ERROR; 282 } 283 return NULL; 284 } 285 return ((BreakIterator*)bi)->getLocaleID(type, *status); 286 } 287 288 289 void ubrk_refreshUText(UBreakIterator *bi, 290 UText *text, 291 UErrorCode *status) 292 { 293 BreakIterator *bii = reinterpret_cast<BreakIterator *>(bi); 294 bii->refreshInputText(text, *status); 295 } 296 297 298 299 #endif /* #if !UCONFIG_NO_BREAK_ITERATION */ 300
