1 // 2017 and later: Unicode, Inc. and others. 2 // License & terms of use: http://www.unicode.org/copyright.html 3 4 // ucasemap_imp.h 5 // created: 2017feb08 Markus W. Scherer 6 7 #ifndef __UCASEMAP_IMP_H__ 8 #define __UCASEMAP_IMP_H__ 9 10 #include "unicode/utypes.h" 11 #include "unicode/ucasemap.h" 12 #include "unicode/uchar.h" 13 #include "ucase.h" 14 15 /** 16 * Bit mask for the titlecasing iterator options bit field. 17 * Currently only 3 out of 8 values are used: 18 * 0 (words), U_TITLECASE_WHOLE_STRING, U_TITLECASE_SENTENCES. 19 * See stringoptions.h. 20 * @internal 21 */ 22 #define U_TITLECASE_ITERATOR_MASK 0xe0 23 24 /** 25 * Bit mask for the titlecasing index adjustment options bit set. 26 * Currently two bits are defined: 27 * U_TITLECASE_NO_BREAK_ADJUSTMENT, U_TITLECASE_ADJUST_TO_CASED. 28 * See stringoptions.h. 29 * @internal 30 */ 31 #define U_TITLECASE_ADJUSTMENT_MASK 0x600 32 33 /** 34 * Internal API, used by u_strcasecmp() etc. 35 * Compare strings case-insensitively, 36 * in code point order or code unit order. 37 */ 38 U_CFUNC int32_t 39 u_strcmpFold(const UChar *s1, int32_t length1, 40 const UChar *s2, int32_t length2, 41 uint32_t options, 42 UErrorCode *pErrorCode); 43 44 /** 45 * Internal API, used for detecting length of 46 * shared prefix case-insensitively. 47 * @param s1 input string 1 48 * @param length1 length of string 1, or -1 (NULL terminated) 49 * @param s2 input string 2 50 * @param length2 length of string 2, or -1 (NULL terminated) 51 * @param options compare options 52 * @param matchLen1 (output) length of partial prefix match in s1 53 * @param matchLen2 (output) length of partial prefix match in s2 54 * @param pErrorCode receives error status 55 */ 56 U_CAPI void 57 u_caseInsensitivePrefixMatch(const UChar *s1, int32_t length1, 58 const UChar *s2, int32_t length2, 59 uint32_t options, 60 int32_t *matchLen1, int32_t *matchLen2, 61 UErrorCode *pErrorCode); 62 63 #ifdef __cplusplus 64 65 U_NAMESPACE_BEGIN 66 67 class BreakIterator; // unicode/brkiter.h 68 class ByteSink; 69 class Locale; // unicode/locid.h 70 71 /** Returns TRUE if the options are valid. Otherwise FALSE, and sets an error. */ 72 inline UBool ustrcase_checkTitleAdjustmentOptions(uint32_t options, UErrorCode &errorCode) { 73 if (U_FAILURE(errorCode)) { return FALSE; } 74 if ((options & U_TITLECASE_ADJUSTMENT_MASK) == U_TITLECASE_ADJUSTMENT_MASK) { 75 // Both options together. 76 errorCode = U_ILLEGAL_ARGUMENT_ERROR; 77 return FALSE; 78 } 79 return TRUE; 80 } 81 82 inline UBool ustrcase_isLNS(UChar32 c) { 83 // Letter, number, symbol, 84 // or a private use code point because those are typically used as letters or numbers. 85 // Consider modifier letters only if they are cased. 86 const uint32_t LNS = (U_GC_L_MASK|U_GC_N_MASK|U_GC_S_MASK|U_GC_CO_MASK) & ~U_GC_LM_MASK; 87 int gc = u_charType(c); 88 return (U_MASK(gc) & LNS) != 0 || (gc == U_MODIFIER_LETTER && ucase_getType(c) != UCASE_NONE); 89 } 90 91 #if !UCONFIG_NO_BREAK_ITERATION 92 93 /** Returns nullptr if error. Pass in either locale or locID, not both. */ 94 U_CFUNC 95 BreakIterator *ustrcase_getTitleBreakIterator( 96 const Locale *locale, const char *locID, uint32_t options, BreakIterator *iter, 97 LocalPointer<BreakIterator> &ownedIter, UErrorCode &errorCode); 98 99 #endif 100 101 U_NAMESPACE_END 102 103 #include "unicode/unistr.h" // for UStringCaseMapper 104 105 /* 106 * Internal string casing functions implementing 107 * ustring.h/ustrcase.cpp and UnicodeString case mapping functions. 108 */ 109 110 struct UCaseMap : public icu::UMemory { 111 /** Implements most of ucasemap_open(). */ 112 UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode); 113 ~UCaseMap(); 114 115 #if !UCONFIG_NO_BREAK_ITERATION 116 icu::BreakIterator *iter; /* We adopt the iterator, so we own it. */ 117 #endif 118 char locale[32]; 119 int32_t caseLocale; 120 uint32_t options; 121 }; 122 123 #if UCONFIG_NO_BREAK_ITERATION 124 # define UCASEMAP_BREAK_ITERATOR_PARAM 125 # define UCASEMAP_BREAK_ITERATOR_UNUSED 126 # define UCASEMAP_BREAK_ITERATOR 127 # define UCASEMAP_BREAK_ITERATOR_NULL 128 #else 129 # define UCASEMAP_BREAK_ITERATOR_PARAM icu::BreakIterator *iter, 130 # define UCASEMAP_BREAK_ITERATOR_UNUSED icu::BreakIterator *, 131 # define UCASEMAP_BREAK_ITERATOR iter, 132 # define UCASEMAP_BREAK_ITERATOR_NULL NULL, 133 #endif 134 135 U_CFUNC int32_t 136 ustrcase_getCaseLocale(const char *locale); 137 138 // TODO: swap src / dest if approved for new public api 139 /** Implements UStringCaseMapper. */ 140 U_CFUNC int32_t U_CALLCONV 141 ustrcase_internalToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 142 UChar *dest, int32_t destCapacity, 143 const UChar *src, int32_t srcLength, 144 icu::Edits *edits, 145 UErrorCode &errorCode); 146 147 /** Implements UStringCaseMapper. */ 148 U_CFUNC int32_t U_CALLCONV 149 ustrcase_internalToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 150 UChar *dest, int32_t destCapacity, 151 const UChar *src, int32_t srcLength, 152 icu::Edits *edits, 153 UErrorCode &errorCode); 154 155 #if !UCONFIG_NO_BREAK_ITERATION 156 157 /** Implements UStringCaseMapper. */ 158 U_CFUNC int32_t U_CALLCONV 159 ustrcase_internalToTitle(int32_t caseLocale, uint32_t options, 160 icu::BreakIterator *iter, 161 UChar *dest, int32_t destCapacity, 162 const UChar *src, int32_t srcLength, 163 icu::Edits *edits, 164 UErrorCode &errorCode); 165 166 #endif 167 168 /** Implements UStringCaseMapper. */ 169 U_CFUNC int32_t U_CALLCONV 170 ustrcase_internalFold(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 171 UChar *dest, int32_t destCapacity, 172 const UChar *src, int32_t srcLength, 173 icu::Edits *edits, 174 UErrorCode &errorCode); 175 176 /** 177 * Common string case mapping implementation for ucasemap_toXyz() and UnicodeString::toXyz(). 178 * Implements argument checking. 179 */ 180 U_CFUNC int32_t 181 ustrcase_map(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 182 UChar *dest, int32_t destCapacity, 183 const UChar *src, int32_t srcLength, 184 UStringCaseMapper *stringCaseMapper, 185 icu::Edits *edits, 186 UErrorCode &errorCode); 187 188 /** 189 * Common string case mapping implementation for old-fashioned u_strToXyz() functions 190 * that allow the source string to overlap the destination buffer. 191 * Implements argument checking and internally works with an intermediate buffer if necessary. 192 */ 193 U_CFUNC int32_t 194 ustrcase_mapWithOverlap(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 195 UChar *dest, int32_t destCapacity, 196 const UChar *src, int32_t srcLength, 197 UStringCaseMapper *stringCaseMapper, 198 UErrorCode &errorCode); 199 200 /** 201 * UTF-8 string case mapping function type, used by ucasemap_mapUTF8(). 202 * UTF-8 version of UStringCaseMapper. 203 * All error checking must be done. 204 * The UCaseMap must be fully initialized, with locale and/or iter set as needed. 205 */ 206 typedef void U_CALLCONV 207 UTF8CaseMapper(int32_t caseLocale, uint32_t options, 208 #if !UCONFIG_NO_BREAK_ITERATION 209 icu::BreakIterator *iter, 210 #endif 211 const uint8_t *src, int32_t srcLength, 212 icu::ByteSink &sink, icu::Edits *edits, 213 UErrorCode &errorCode); 214 215 #if !UCONFIG_NO_BREAK_ITERATION 216 217 /** Implements UTF8CaseMapper. */ 218 U_CFUNC void U_CALLCONV 219 ucasemap_internalUTF8ToTitle(int32_t caseLocale, uint32_t options, 220 icu::BreakIterator *iter, 221 const uint8_t *src, int32_t srcLength, 222 icu::ByteSink &sink, icu::Edits *edits, 223 UErrorCode &errorCode); 224 225 #endif 226 227 void 228 ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 229 const char *src, int32_t srcLength, 230 UTF8CaseMapper *stringCaseMapper, 231 icu::ByteSink &sink, icu::Edits *edits, 232 UErrorCode &errorCode); 233 234 /** 235 * Implements argument checking and buffer handling 236 * for UTF-8 string case mapping as a common function. 237 */ 238 int32_t 239 ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM 240 char *dest, int32_t destCapacity, 241 const char *src, int32_t srcLength, 242 UTF8CaseMapper *stringCaseMapper, 243 icu::Edits *edits, 244 UErrorCode &errorCode); 245 246 U_NAMESPACE_BEGIN 247 namespace GreekUpper { 248 249 // Data bits. 250 static const uint32_t UPPER_MASK = 0x3ff; 251 static const uint32_t HAS_VOWEL = 0x1000; 252 static const uint32_t HAS_YPOGEGRAMMENI = 0x2000; 253 static const uint32_t HAS_ACCENT = 0x4000; 254 static const uint32_t HAS_DIALYTIKA = 0x8000; 255 // Further bits during data building and processing, not stored in the data map. 256 static const uint32_t HAS_COMBINING_DIALYTIKA = 0x10000; 257 static const uint32_t HAS_OTHER_GREEK_DIACRITIC = 0x20000; 258 259 static const uint32_t HAS_VOWEL_AND_ACCENT = HAS_VOWEL | HAS_ACCENT; 260 static const uint32_t HAS_VOWEL_AND_ACCENT_AND_DIALYTIKA = 261 HAS_VOWEL_AND_ACCENT | HAS_DIALYTIKA; 262 static const uint32_t HAS_EITHER_DIALYTIKA = HAS_DIALYTIKA | HAS_COMBINING_DIALYTIKA; 263 264 // State bits. 265 static const uint32_t AFTER_CASED = 1; 266 static const uint32_t AFTER_VOWEL_WITH_ACCENT = 2; 267 268 uint32_t getLetterData(UChar32 c); 269 270 /** 271 * Returns a non-zero value for each of the Greek combining diacritics 272 * listed in The Unicode Standard, version 8, chapter 7.2 Greek, 273 * plus some perispomeni look-alikes. 274 */ 275 uint32_t getDiacriticData(UChar32 c); 276 277 } // namespace GreekUpper 278 U_NAMESPACE_END 279 280 #endif // __cplusplus 281 282 #endif // __UCASEMAP_IMP_H__ 283
