1 /* 2 ******************************************************************************** 3 * Copyright (C) 1996-2013, 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 BreakIterator *brit = (BreakIterator *)bi; 168 UText ut = UTEXT_INITIALIZER; 169 utext_openUChars(&ut, text, textLength, status); 170 brit->setText(&ut, *status); 171 // A stack allocated UText wrapping a UChar * string 172 // can be dumped without explicitly closing it. 173 } 174 175 176 177 U_CAPI void U_EXPORT2 178 ubrk_setUText(UBreakIterator *bi, 179 UText *text, 180 UErrorCode *status) 181 { 182 RuleBasedBreakIterator *brit = (RuleBasedBreakIterator *)bi; 183 brit->RuleBasedBreakIterator::setText(text, *status); 184 } 185 186 187 188 189 190 U_CAPI int32_t U_EXPORT2 191 ubrk_current(const UBreakIterator *bi) 192 { 193 194 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::current(); 195 } 196 197 U_CAPI int32_t U_EXPORT2 198 ubrk_next(UBreakIterator *bi) 199 { 200 201 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::next(); 202 } 203 204 U_CAPI int32_t U_EXPORT2 205 ubrk_previous(UBreakIterator *bi) 206 { 207 208 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::previous(); 209 } 210 211 U_CAPI int32_t U_EXPORT2 212 ubrk_first(UBreakIterator *bi) 213 { 214 215 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::first(); 216 } 217 218 U_CAPI int32_t U_EXPORT2 219 ubrk_last(UBreakIterator *bi) 220 { 221 222 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::last(); 223 } 224 225 U_CAPI int32_t U_EXPORT2 226 ubrk_preceding(UBreakIterator *bi, 227 int32_t offset) 228 { 229 230 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::preceding(offset); 231 } 232 233 U_CAPI int32_t U_EXPORT2 234 ubrk_following(UBreakIterator *bi, 235 int32_t offset) 236 { 237 238 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::following(offset); 239 } 240 241 U_CAPI const char* U_EXPORT2 242 ubrk_getAvailable(int32_t index) 243 { 244 245 return uloc_getAvailable(index); 246 } 247 248 U_CAPI int32_t U_EXPORT2 249 ubrk_countAvailable() 250 { 251 252 return uloc_countAvailable(); 253 } 254 255 256 U_CAPI UBool U_EXPORT2 257 ubrk_isBoundary(UBreakIterator *bi, int32_t offset) 258 { 259 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::isBoundary(offset); 260 } 261 262 263 U_CAPI int32_t U_EXPORT2 264 ubrk_getRuleStatus(UBreakIterator *bi) 265 { 266 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatus(); 267 } 268 269 U_CAPI int32_t U_EXPORT2 270 ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status) 271 { 272 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatusVec(fillInVec, capacity, *status); 273 } 274 275 276 U_CAPI const char* U_EXPORT2 277 ubrk_getLocaleByType(const UBreakIterator *bi, 278 ULocDataLocaleType type, 279 UErrorCode* status) 280 { 281 if (bi == NULL) { 282 if (U_SUCCESS(*status)) { 283 *status = U_ILLEGAL_ARGUMENT_ERROR; 284 } 285 return NULL; 286 } 287 return ((BreakIterator*)bi)->getLocaleID(type, *status); 288 } 289 290 291 void ubrk_refreshUText(UBreakIterator *bi, 292 UText *text, 293 UErrorCode *status) 294 { 295 BreakIterator *bii = reinterpret_cast<BreakIterator *>(bi); 296 bii->refreshInputText(text, *status); 297 } 298 299 300 301 #endif /* #if !UCONFIG_NO_BREAK_ITERATION */ 302
