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 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 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 } 146 147 148 149 U_CAPI void U_EXPORT2 150 ubrk_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 } 162 163 U_CAPI void U_EXPORT2 164 ubrk_setText(UBreakIterator* bi, 165 const UChar* text, 166 int32_t textLength, 167 UErrorCode* status) 168 { 169 // BEGIN android-added 170 // For icu ticket#9115 171 if (bi == NULL) { 172 if (U_SUCCESS(*status)) { 173 *status = U_ILLEGAL_ARGUMENT_ERROR; 174 } 175 return; 176 } 177 // END android-added 178 179 BreakIterator *brit = (BreakIterator *)bi; 180 UText ut = UTEXT_INITIALIZER; 181 utext_openUChars(&ut, text, textLength, status); 182 brit->setText(&ut, *status); 183 // A stack allocated UText wrapping a UCHar * string 184 // can be dumped without explicitly closing it. 185 } 186 187 188 189 U_CAPI void U_EXPORT2 190 ubrk_setUText(UBreakIterator *bi, 191 UText *text, 192 UErrorCode *status) 193 { 194 RuleBasedBreakIterator *brit = (RuleBasedBreakIterator *)bi; 195 brit->RuleBasedBreakIterator::setText(text, *status); 196 } 197 198 199 200 201 202 U_CAPI int32_t U_EXPORT2 203 ubrk_current(const UBreakIterator *bi) 204 { 205 206 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::current(); 207 } 208 209 U_CAPI int32_t U_EXPORT2 210 ubrk_next(UBreakIterator *bi) 211 { 212 213 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::next(); 214 } 215 216 U_CAPI int32_t U_EXPORT2 217 ubrk_previous(UBreakIterator *bi) 218 { 219 220 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::previous(); 221 } 222 223 U_CAPI int32_t U_EXPORT2 224 ubrk_first(UBreakIterator *bi) 225 { 226 227 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::first(); 228 } 229 230 U_CAPI int32_t U_EXPORT2 231 ubrk_last(UBreakIterator *bi) 232 { 233 234 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::last(); 235 } 236 237 U_CAPI int32_t U_EXPORT2 238 ubrk_preceding(UBreakIterator *bi, 239 int32_t offset) 240 { 241 242 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::preceding(offset); 243 } 244 245 U_CAPI int32_t U_EXPORT2 246 ubrk_following(UBreakIterator *bi, 247 int32_t offset) 248 { 249 250 return ((RuleBasedBreakIterator*)bi)->RuleBasedBreakIterator::following(offset); 251 } 252 253 U_CAPI const char* U_EXPORT2 254 ubrk_getAvailable(int32_t index) 255 { 256 257 return uloc_getAvailable(index); 258 } 259 260 U_CAPI int32_t U_EXPORT2 261 ubrk_countAvailable() 262 { 263 264 return uloc_countAvailable(); 265 } 266 267 268 U_CAPI UBool U_EXPORT2 269 ubrk_isBoundary(UBreakIterator *bi, int32_t offset) 270 { 271 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::isBoundary(offset); 272 } 273 274 275 U_CAPI int32_t U_EXPORT2 276 ubrk_getRuleStatus(UBreakIterator *bi) 277 { 278 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatus(); 279 } 280 281 U_CAPI int32_t U_EXPORT2 282 ubrk_getRuleStatusVec(UBreakIterator *bi, int32_t *fillInVec, int32_t capacity, UErrorCode *status) 283 { 284 return ((RuleBasedBreakIterator *)bi)->RuleBasedBreakIterator::getRuleStatusVec(fillInVec, capacity, *status); 285 } 286 287 288 U_CAPI const char* U_EXPORT2 289 ubrk_getLocaleByType(const UBreakIterator *bi, 290 ULocDataLocaleType type, 291 UErrorCode* status) 292 { 293 if (bi == NULL) { 294 if (U_SUCCESS(*status)) { 295 *status = U_ILLEGAL_ARGUMENT_ERROR; 296 } 297 return NULL; 298 } 299 return ((BreakIterator*)bi)->getLocaleID(type, *status); 300 } 301 302 303 #endif /* #if !UCONFIG_NO_BREAK_ITERATION */ 304
