| // © 2017 and later: Unicode, Inc. and others. |
| // License & terms of use: http://www.unicode.org/copyright.html |
| |
| // ucasemap_imp.h |
| // created: 2017feb08 Markus W. Scherer |
| |
| #ifndef __UCASEMAP_IMP_H__ |
| #define __UCASEMAP_IMP_H__ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/ucasemap.h" |
| #include "unicode/uchar.h" |
| #include "ucase.h" |
| |
| /** |
| * Bit mask for the titlecasing iterator options bit field. |
| * Currently only 3 out of 8 values are used: |
| * 0 (words), U_TITLECASE_WHOLE_STRING, U_TITLECASE_SENTENCES. |
| * See stringoptions.h. |
| * @internal |
| */ |
| #define U_TITLECASE_ITERATOR_MASK 0xe0 |
| |
| /** |
| * Bit mask for the titlecasing index adjustment options bit set. |
| * Currently two bits are defined: |
| * U_TITLECASE_NO_BREAK_ADJUSTMENT, U_TITLECASE_ADJUST_TO_CASED. |
| * See stringoptions.h. |
| * @internal |
| */ |
| #define U_TITLECASE_ADJUSTMENT_MASK 0x600 |
| |
| /** |
| * Internal API, used by u_strcasecmp() etc. |
| * Compare strings case-insensitively, |
| * in code point order or code unit order. |
| */ |
| U_CFUNC int32_t |
| u_strcmpFold(const UChar *s1, int32_t length1, |
| const UChar *s2, int32_t length2, |
| uint32_t options, |
| UErrorCode *pErrorCode); |
| |
| /** |
| * Internal API, used for detecting length of |
| * shared prefix case-insensitively. |
| * @param s1 input string 1 |
| * @param length1 length of string 1, or -1 (NULL terminated) |
| * @param s2 input string 2 |
| * @param length2 length of string 2, or -1 (NULL terminated) |
| * @param options compare options |
| * @param matchLen1 (output) length of partial prefix match in s1 |
| * @param matchLen2 (output) length of partial prefix match in s2 |
| * @param pErrorCode receives error status |
| */ |
| U_CAPI void |
| u_caseInsensitivePrefixMatch(const UChar *s1, int32_t length1, |
| const UChar *s2, int32_t length2, |
| uint32_t options, |
| int32_t *matchLen1, int32_t *matchLen2, |
| UErrorCode *pErrorCode); |
| |
| #ifdef __cplusplus |
| |
| U_NAMESPACE_BEGIN |
| |
| class BreakIterator; // unicode/brkiter.h |
| class ByteSink; |
| class Locale; // unicode/locid.h |
| |
| /** Returns true if the options are valid. Otherwise false, and sets an error. */ |
| inline UBool ustrcase_checkTitleAdjustmentOptions(uint32_t options, UErrorCode &errorCode) { |
| if (U_FAILURE(errorCode)) { return false; } |
| if ((options & U_TITLECASE_ADJUSTMENT_MASK) == U_TITLECASE_ADJUSTMENT_MASK) { |
| // Both options together. |
| errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| return false; |
| } |
| return true; |
| } |
| |
| inline UBool ustrcase_isLNS(UChar32 c) { |
| // Letter, number, symbol, |
| // or a private use code point because those are typically used as letters or numbers. |
| // Consider modifier letters only if they are cased. |
| const uint32_t LNS = (U_GC_L_MASK|U_GC_N_MASK|U_GC_S_MASK|U_GC_CO_MASK) & ~U_GC_LM_MASK; |
| int gc = u_charType(c); |
| return (U_MASK(gc) & LNS) != 0 || (gc == U_MODIFIER_LETTER && ucase_getType(c) != UCASE_NONE); |
| } |
| |
| #if !UCONFIG_NO_BREAK_ITERATION |
| |
| /** Returns nullptr if error. Pass in either locale or locID, not both. */ |
| U_CFUNC |
| BreakIterator *ustrcase_getTitleBreakIterator( |
| const Locale *locale, const char *locID, uint32_t options, BreakIterator *iter, |
| LocalPointer<BreakIterator> &ownedIter, UErrorCode &errorCode); |
| |
| #endif |
| |
| U_NAMESPACE_END |
| |
| #include "unicode/unistr.h" // for UStringCaseMapper |
| |
| /* |
| * Internal string casing functions implementing |
| * ustring.h/ustrcase.cpp and UnicodeString case mapping functions. |
| */ |
| |
| struct UCaseMap : public icu::UMemory { |
| /** Implements most of ucasemap_open(). */ |
| UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode); |
| ~UCaseMap(); |
| |
| #if !UCONFIG_NO_BREAK_ITERATION |
| icu::BreakIterator *iter; /* We adopt the iterator, so we own it. */ |
| #endif |
| char locale[32]; |
| int32_t caseLocale; |
| uint32_t options; |
| }; |
| |
| #if UCONFIG_NO_BREAK_ITERATION |
| # define UCASEMAP_BREAK_ITERATOR_PARAM |
| # define UCASEMAP_BREAK_ITERATOR_UNUSED |
| # define UCASEMAP_BREAK_ITERATOR |
| # define UCASEMAP_BREAK_ITERATOR_NULL |
| #else |
| # define UCASEMAP_BREAK_ITERATOR_PARAM icu::BreakIterator *iter, |
| # define UCASEMAP_BREAK_ITERATOR_UNUSED icu::BreakIterator *, |
| # define UCASEMAP_BREAK_ITERATOR iter, |
| # define UCASEMAP_BREAK_ITERATOR_NULL NULL, |
| #endif |
| |
| U_CFUNC int32_t |
| ustrcase_getCaseLocale(const char *locale); |
| |
| // TODO: swap src / dest if approved for new public api |
| /** Implements UStringCaseMapper. */ |
| U_CFUNC int32_t U_CALLCONV |
| ustrcase_internalToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| /** Implements UStringCaseMapper. */ |
| U_CFUNC int32_t U_CALLCONV |
| ustrcase_internalToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| #if !UCONFIG_NO_BREAK_ITERATION |
| |
| /** Implements UStringCaseMapper. */ |
| U_CFUNC int32_t U_CALLCONV |
| ustrcase_internalToTitle(int32_t caseLocale, uint32_t options, |
| icu::BreakIterator *iter, |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| #endif |
| |
| /** Implements UStringCaseMapper. */ |
| U_CFUNC int32_t U_CALLCONV |
| ustrcase_internalFold(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| /** |
| * Common string case mapping implementation for ucasemap_toXyz() and UnicodeString::toXyz(). |
| * Implements argument checking. |
| */ |
| U_CFUNC int32_t |
| ustrcase_map(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| UStringCaseMapper *stringCaseMapper, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| /** |
| * Common string case mapping implementation for old-fashioned u_strToXyz() functions |
| * that allow the source string to overlap the destination buffer. |
| * Implements argument checking and internally works with an intermediate buffer if necessary. |
| */ |
| U_CFUNC int32_t |
| ustrcase_mapWithOverlap(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| UChar *dest, int32_t destCapacity, |
| const UChar *src, int32_t srcLength, |
| UStringCaseMapper *stringCaseMapper, |
| UErrorCode &errorCode); |
| |
| /** |
| * UTF-8 string case mapping function type, used by ucasemap_mapUTF8(). |
| * UTF-8 version of UStringCaseMapper. |
| * All error checking must be done. |
| * The UCaseMap must be fully initialized, with locale and/or iter set as needed. |
| */ |
| typedef void U_CALLCONV |
| UTF8CaseMapper(int32_t caseLocale, uint32_t options, |
| #if !UCONFIG_NO_BREAK_ITERATION |
| icu::BreakIterator *iter, |
| #endif |
| const uint8_t *src, int32_t srcLength, |
| icu::ByteSink &sink, icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| #if !UCONFIG_NO_BREAK_ITERATION |
| |
| /** Implements UTF8CaseMapper. */ |
| U_CFUNC void U_CALLCONV |
| ucasemap_internalUTF8ToTitle(int32_t caseLocale, uint32_t options, |
| icu::BreakIterator *iter, |
| const uint8_t *src, int32_t srcLength, |
| icu::ByteSink &sink, icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| #endif |
| |
| void |
| ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| const char *src, int32_t srcLength, |
| UTF8CaseMapper *stringCaseMapper, |
| icu::ByteSink &sink, icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| /** |
| * Implements argument checking and buffer handling |
| * for UTF-8 string case mapping as a common function. |
| */ |
| int32_t |
| ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM |
| char *dest, int32_t destCapacity, |
| const char *src, int32_t srcLength, |
| UTF8CaseMapper *stringCaseMapper, |
| icu::Edits *edits, |
| UErrorCode &errorCode); |
| |
| U_NAMESPACE_BEGIN |
| namespace GreekUpper { |
| |
| // Data bits. |
| static const uint32_t UPPER_MASK = 0x3ff; |
| static const uint32_t HAS_VOWEL = 0x1000; |
| static const uint32_t HAS_YPOGEGRAMMENI = 0x2000; |
| static const uint32_t HAS_ACCENT = 0x4000; |
| static const uint32_t HAS_DIALYTIKA = 0x8000; |
| // Further bits during data building and processing, not stored in the data map. |
| static const uint32_t HAS_COMBINING_DIALYTIKA = 0x10000; |
| static const uint32_t HAS_OTHER_GREEK_DIACRITIC = 0x20000; |
| |
| static const uint32_t HAS_VOWEL_AND_ACCENT = HAS_VOWEL | HAS_ACCENT; |
| static const uint32_t HAS_VOWEL_AND_ACCENT_AND_DIALYTIKA = |
| HAS_VOWEL_AND_ACCENT | HAS_DIALYTIKA; |
| static const uint32_t HAS_EITHER_DIALYTIKA = HAS_DIALYTIKA | HAS_COMBINING_DIALYTIKA; |
| |
| // State bits. |
| static const uint32_t AFTER_CASED = 1; |
| static const uint32_t AFTER_VOWEL_WITH_ACCENT = 2; |
| |
| uint32_t getLetterData(UChar32 c); |
| |
| /** |
| * Returns a non-zero value for each of the Greek combining diacritics |
| * listed in The Unicode Standard, version 8, chapter 7.2 Greek, |
| * plus some perispomeni look-alikes. |
| */ |
| uint32_t getDiacriticData(UChar32 c); |
| |
| } // namespace GreekUpper |
| U_NAMESPACE_END |
| |
| #endif // __cplusplus |
| |
| #endif // __UCASEMAP_IMP_H__ |
