ICU 76.1: common/unicode/uchar.h File Reference

ICU 76.1 76.1

Macros | Typedefs | Enumerations | Functions
uchar.h File Reference

C API: Unicode Properties. More...

`#include <stdbool.h>`
`#include "unicode/utypes.h"`
`#include "unicode/stringoptions.h"`
`#include "unicode/ucpmap.h"`

Go to the source code of this file.

## Macros
#define | U_UNICODE_VERSION "16.0"
| Unicode version number, default for the current ICU version.
#define | UCHAR_MIN_VALUE 0
| Constants.
#define | UCHAR_MAX_VALUE 0x10ffff
| The highest Unicode code point value (scalar value) according to The Unicode Standard.
#define | U_MASK(x)
| Get a single-bit bit set (a flag) from a bit number 0..31.
#define | U_GC_CN_MASK U_MASK(U_GENERAL_OTHER_TYPES)
| U_GC_XX_MASK constants are bit flags corresponding to Unicode general category values.
#define | U_GC_LU_MASK U_MASK(U_UPPERCASE_LETTER)
| Mask constant for a UCharCategory.
#define | U_GC_LL_MASK U_MASK(U_LOWERCASE_LETTER)
| Mask constant for a UCharCategory.
#define | U_GC_LT_MASK U_MASK(U_TITLECASE_LETTER)
| Mask constant for a UCharCategory.
#define | U_GC_LM_MASK U_MASK(U_MODIFIER_LETTER)
| Mask constant for a UCharCategory.
#define | U_GC_LO_MASK U_MASK(U_OTHER_LETTER)
| Mask constant for a UCharCategory.
#define | U_GC_MN_MASK U_MASK(U_NON_SPACING_MARK)
| Mask constant for a UCharCategory.
#define | U_GC_ME_MASK U_MASK(U_ENCLOSING_MARK)
| Mask constant for a UCharCategory.
#define | U_GC_MC_MASK U_MASK(U_COMBINING_SPACING_MARK)
| Mask constant for a UCharCategory.
#define | U_GC_ND_MASK U_MASK(U_DECIMAL_DIGIT_NUMBER)
| Mask constant for a UCharCategory.
#define | U_GC_NL_MASK U_MASK(U_LETTER_NUMBER)
| Mask constant for a UCharCategory.
#define | U_GC_NO_MASK U_MASK(U_OTHER_NUMBER)
| Mask constant for a UCharCategory.
#define | U_GC_ZS_MASK U_MASK(U_SPACE_SEPARATOR)
| Mask constant for a UCharCategory.
#define | U_GC_ZL_MASK U_MASK(U_LINE_SEPARATOR)
| Mask constant for a UCharCategory.
#define | U_GC_ZP_MASK U_MASK(U_PARAGRAPH_SEPARATOR)
| Mask constant for a UCharCategory.
#define | U_GC_CC_MASK U_MASK(U_CONTROL_CHAR)
| Mask constant for a UCharCategory.
#define | U_GC_CF_MASK U_MASK(U_FORMAT_CHAR)
| Mask constant for a UCharCategory.
#define | U_GC_CO_MASK U_MASK(U_PRIVATE_USE_CHAR)
| Mask constant for a UCharCategory.
#define | U_GC_CS_MASK U_MASK(U_SURROGATE)
| Mask constant for a UCharCategory.
#define | U_GC_PD_MASK U_MASK(U_DASH_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_PS_MASK U_MASK(U_START_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_PE_MASK U_MASK(U_END_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_PC_MASK U_MASK(U_CONNECTOR_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_PO_MASK U_MASK(U_OTHER_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_SM_MASK U_MASK(U_MATH_SYMBOL)
| Mask constant for a UCharCategory.
#define | U_GC_SC_MASK U_MASK(U_CURRENCY_SYMBOL)
| Mask constant for a UCharCategory.
#define | U_GC_SK_MASK U_MASK(U_MODIFIER_SYMBOL)
| Mask constant for a UCharCategory.
#define | U_GC_SO_MASK U_MASK(U_OTHER_SYMBOL)
| Mask constant for a UCharCategory.
#define | U_GC_PI_MASK U_MASK(U_INITIAL_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_PF_MASK U_MASK(U_FINAL_PUNCTUATION)
| Mask constant for a UCharCategory.
#define | U_GC_L_MASK (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK|U_GC_LM_MASK|U_GC_LO_MASK)
| Mask constant for multiple UCharCategory bits (L Letters).
#define | U_GC_LC_MASK (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK)
| Mask constant for multiple UCharCategory bits (LC Cased Letters).
#define | U_GC_M_MASK (U_GC_MN_MASK|U_GC_ME_MASK|U_GC_MC_MASK)
| Mask constant for multiple UCharCategory bits (M Marks).
#define | U_GC_N_MASK (U_GC_ND_MASK|U_GC_NL_MASK|U_GC_NO_MASK)
| Mask constant for multiple UCharCategory bits (N Numbers).
#define | U_GC_Z_MASK (U_GC_ZS_MASK|U_GC_ZL_MASK|U_GC_ZP_MASK)
| Mask constant for multiple UCharCategory bits (Z Separators).
#define | U_GC_C_MASK (U_GC_CN_MASK|U_GC_CC_MASK|U_GC_CF_MASK|U_GC_CO_MASK|U_GC_CS_MASK)
| Mask constant for multiple UCharCategory bits (C Others).
#define | U_GC_P_MASK
| Mask constant for multiple UCharCategory bits (P Punctuation).
#define | U_GC_S_MASK (U_GC_SM_MASK|U_GC_SC_MASK|U_GC_SK_MASK|U_GC_SO_MASK)
| Mask constant for multiple UCharCategory bits (S Symbols).
#define | U_NO_NUMERIC_VALUE ((double)-123456789.)
| Special value that is returned by u_getNumericValue when no numeric value is defined for a code point.
#define | U_GET_GC_MASK(c)
| Get a single-bit bit set for the general category of a character.

## Typedefs
typedef enum UProperty | UProperty
| Selection constants for Unicode properties.
typedef enum UCharCategory | UCharCategory
| Data for enumerated Unicode general category types.
typedef enum UCharDirection | UCharDirection
| This specifies the language directional property of a character set.
typedef enum UBidiPairedBracketType | UBidiPairedBracketType
| Bidi Paired Bracket Type constants.
typedef enum UBlockCode | UBlockCode
typedef enum UEastAsianWidth | UEastAsianWidth
| East Asian Width constants.
typedef enum UCharNameChoice | UCharNameChoice
| Selector constants for u_charName().
typedef enum UPropertyNameChoice | UPropertyNameChoice
| Selector constants for u_getPropertyName() and u_getPropertyValueName().
typedef enum UDecompositionType | UDecompositionType
| Decomposition Type constants.
typedef enum UJoiningType | UJoiningType
| Joining Type constants.
typedef enum UJoiningGroup | UJoiningGroup
| Joining Group constants.
typedef enum UGraphemeClusterBreak | UGraphemeClusterBreak
| Grapheme Cluster Break constants.
typedef enum UWordBreakValues | UWordBreakValues
| Word Break constants.
typedef enum USentenceBreak | USentenceBreak
| Sentence Break constants.
typedef enum ULineBreak | ULineBreak
| Line Break constants.
typedef enum UNumericType | UNumericType
| Numeric Type constants.
typedef enum UHangulSyllableType | UHangulSyllableType
| Hangul Syllable Type constants.
typedef enum UIndicPositionalCategory | UIndicPositionalCategory
| Indic Positional Category constants.
typedef enum UIndicSyllabicCategory | UIndicSyllabicCategory
| Indic Syllabic Category constants.
typedef enum UIndicConjunctBreak | UIndicConjunctBreak
| Indic Conjunct Break constants.
typedef enum UVerticalOrientation | UVerticalOrientation
| Vertical Orientation constants.
typedef enum UIdentifierStatus | UIdentifierStatus
| Identifier Status constants.
typedef enum UIdentifierType | UIdentifierType
| Identifier Type constants.
typedef UBool | UCharEnumTypeRange(const void *context, UChar32 start, UChar32 limit, UCharCategory type)
| Callback from u_enumCharTypes(), is called for each contiguous range of code points c (where start<=c<limit) with the same Unicode general category ("character type").
typedef UBool | UEnumCharNamesFn(void *context, UChar32 code, UCharNameChoice nameChoice, const char *name, int32_t length)
| Type of a callback function for u_enumCharNames() that gets called for each Unicode character with the code point value and the character name.

## Enumerations
enum | UProperty { UCHAR_ALPHABETIC =0 , UCHAR_BINARY_START =UCHAR_ALPHABETIC , UCHAR_ASCII_HEX_DIGIT =1 , UCHAR_BIDI_CONTROL =2 , UCHAR_BIDI_MIRRORED =3 , UCHAR_DASH =4 , UCHAR_DEFAULT_IGNORABLE_CODE_POINT =5 , UCHAR_DEPRECATED =6 , UCHAR_DIACRITIC =7 , UCHAR_EXTENDER =8 , UCHAR_FULL_COMPOSITION_EXCLUSION =9 , UCHAR_GRAPHEME_BASE =10 , UCHAR_GRAPHEME_EXTEND =11 , UCHAR_GRAPHEME_LINK =12 , UCHAR_HEX_DIGIT =13 , UCHAR_HYPHEN =14 , UCHAR_ID_CONTINUE =15 , UCHAR_ID_START =16 , UCHAR_IDEOGRAPHIC =17 , UCHAR_IDS_BINARY_OPERATOR =18 , UCHAR_IDS_TRINARY_OPERATOR =19 , UCHAR_JOIN_CONTROL =20 , UCHAR_LOGICAL_ORDER_EXCEPTION =21 , UCHAR_LOWERCASE =22 , UCHAR_MATH =23 , UCHAR_NONCHARACTER_CODE_POINT =24 , UCHAR_QUOTATION_MARK =25 , UCHAR_RADICAL =26 , UCHAR_SOFT_DOTTED =27 , UCHAR_TERMINAL_PUNCTUATION =28 , UCHAR_UNIFIED_IDEOGRAPH =29 , UCHAR_UPPERCASE =30 , UCHAR_WHITE_SPACE =31 , UCHAR_XID_CONTINUE =32 , UCHAR_XID_START =33 , UCHAR_CASE_SENSITIVE =34 , UCHAR_S_TERM =35 , UCHAR_VARIATION_SELECTOR =36 , UCHAR_NFD_INERT =37 , UCHAR_NFKD_INERT =38 , UCHAR_NFC_INERT =39 , UCHAR_NFKC_INERT =40 , UCHAR_SEGMENT_STARTER =41 , UCHAR_PATTERN_SYNTAX =42 , UCHAR_PATTERN_WHITE_SPACE =43 , UCHAR_POSIX_ALNUM =44 , UCHAR_POSIX_BLANK =45 , UCHAR_POSIX_GRAPH =46 , UCHAR_POSIX_PRINT =47 , UCHAR_POSIX_XDIGIT =48 , UCHAR_CASED =49 , UCHAR_CASE_IGNORABLE =50 , UCHAR_CHANGES_WHEN_LOWERCASED =51 , UCHAR_CHANGES_WHEN_UPPERCASED =52 , UCHAR_CHANGES_WHEN_TITLECASED =53 , UCHAR_CHANGES_WHEN_CASEFOLDED =54 , UCHAR_CHANGES_WHEN_CASEMAPPED =55 , UCHAR_CHANGES_WHEN_NFKC_CASEFOLDED =56 , UCHAR_EMOJI =57 , UCHAR_EMOJI_PRESENTATION =58 , UCHAR_EMOJI_MODIFIER =59 , UCHAR_EMOJI_MODIFIER_BASE =60 , UCHAR_EMOJI_COMPONENT =61 , UCHAR_REGIONAL_INDICATOR =62 , UCHAR_PREPENDED_CONCATENATION_MARK =63 , UCHAR_EXTENDED_PICTOGRAPHIC =64 , UCHAR_BASIC_EMOJI =65 , UCHAR_EMOJI_KEYCAP_SEQUENCE =66 , UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE =67 , UCHAR_RGI_EMOJI_FLAG_SEQUENCE =68 , UCHAR_RGI_EMOJI_TAG_SEQUENCE =69 , UCHAR_RGI_EMOJI_ZWJ_SEQUENCE =70 , UCHAR_RGI_EMOJI =71 , UCHAR_IDS_UNARY_OPERATOR =72 , UCHAR_ID_COMPAT_MATH_START =73 , UCHAR_ID_COMPAT_MATH_CONTINUE =74 , UCHAR_MODIFIER_COMBINING_MARK =75 , UCHAR_BINARY_LIMIT =76 , UCHAR_BIDI_CLASS =0x1000 , UCHAR_INT_START =UCHAR_BIDI_CLASS , UCHAR_BLOCK =0x1001 , UCHAR_CANONICAL_COMBINING_CLASS =0x1002 , UCHAR_DECOMPOSITION_TYPE =0x1003 , UCHAR_EAST_ASIAN_WIDTH =0x1004 , UCHAR_GENERAL_CATEGORY =0x1005 , UCHAR_JOINING_GROUP =0x1006 , UCHAR_JOINING_TYPE =0x1007 , UCHAR_LINE_BREAK =0x1008 , UCHAR_NUMERIC_TYPE =0x1009 , UCHAR_SCRIPT =0x100A , UCHAR_HANGUL_SYLLABLE_TYPE =0x100B , UCHAR_NFD_QUICK_CHECK =0x100C , UCHAR_NFKD_QUICK_CHECK =0x100D , UCHAR_NFC_QUICK_CHECK =0x100E , UCHAR_NFKC_QUICK_CHECK =0x100F , UCHAR_LEAD_CANONICAL_COMBINING_CLASS =0x1010 , UCHAR_TRAIL_CANONICAL_COMBINING_CLASS =0x1011 , UCHAR_GRAPHEME_CLUSTER_BREAK =0x1012 , UCHAR_SENTENCE_BREAK =0x1013 , UCHAR_WORD_BREAK =0x1014 , UCHAR_BIDI_PAIRED_BRACKET_TYPE =0x1015 , UCHAR_INDIC_POSITIONAL_CATEGORY =0x1016 , UCHAR_INDIC_SYLLABIC_CATEGORY =0x1017 , UCHAR_VERTICAL_ORIENTATION =0x1018 , UCHAR_IDENTIFIER_STATUS =0x1019 , UCHAR_INDIC_CONJUNCT_BREAK =0x101A , UCHAR_INT_LIMIT =0x101B , UCHAR_GENERAL_CATEGORY_MASK =0x2000 , UCHAR_MASK_START =UCHAR_GENERAL_CATEGORY_MASK , UCHAR_MASK_LIMIT =0x2001 , UCHAR_NUMERIC_VALUE =0x3000 , UCHAR_DOUBLE_START =UCHAR_NUMERIC_VALUE , UCHAR_DOUBLE_LIMIT =0x3001 , UCHAR_AGE =0x4000 , UCHAR_STRING_START =UCHAR_AGE , UCHAR_BIDI_MIRRORING_GLYPH =0x4001 , UCHAR_CASE_FOLDING =0x4002 , UCHAR_ISO_COMMENT =0x4003 , UCHAR_LOWERCASE_MAPPING =0x4004 , UCHAR_NAME =0x4005 , UCHAR_SIMPLE_CASE_FOLDING =0x4006 , UCHAR_SIMPLE_LOWERCASE_MAPPING =0x4007 , UCHAR_SIMPLE_TITLECASE_MAPPING =0x4008 , UCHAR_SIMPLE_UPPERCASE_MAPPING =0x4009 , UCHAR_TITLECASE_MAPPING =0x400A , UCHAR_UNICODE_1_NAME =0x400B , UCHAR_UPPERCASE_MAPPING =0x400C , UCHAR_BIDI_PAIRED_BRACKET =0x400D , UCHAR_STRING_LIMIT =0x400E , UCHAR_SCRIPT_EXTENSIONS =0x7000 , UCHAR_OTHER_PROPERTY_START =UCHAR_SCRIPT_EXTENSIONS , UCHAR_IDENTIFIER_TYPE =0x7001 , UCHAR_OTHER_PROPERTY_LIMIT =0x7002 , UCHAR_INVALID_CODE = -1 }
| Selection constants for Unicode properties. More...
enum | UCharCategory { U_UNASSIGNED = 0 , U_GENERAL_OTHER_TYPES = 0 , U_UPPERCASE_LETTER = 1 , U_LOWERCASE_LETTER = 2 , U_TITLECASE_LETTER = 3 , U_MODIFIER_LETTER = 4 , U_OTHER_LETTER = 5 , U_NON_SPACING_MARK = 6 , U_ENCLOSING_MARK = 7 , U_COMBINING_SPACING_MARK = 8 , U_DECIMAL_DIGIT_NUMBER = 9 , U_LETTER_NUMBER = 10 , U_OTHER_NUMBER = 11 , U_SPACE_SEPARATOR = 12 , U_LINE_SEPARATOR = 13 , U_PARAGRAPH_SEPARATOR = 14 , U_CONTROL_CHAR = 15 , U_FORMAT_CHAR = 16 , U_PRIVATE_USE_CHAR = 17 , U_SURROGATE = 18 , U_DASH_PUNCTUATION = 19 , U_START_PUNCTUATION = 20 , U_END_PUNCTUATION = 21 , U_CONNECTOR_PUNCTUATION = 22 , U_OTHER_PUNCTUATION = 23 , U_MATH_SYMBOL = 24 , U_CURRENCY_SYMBOL = 25 , U_MODIFIER_SYMBOL = 26 , U_OTHER_SYMBOL = 27 , U_INITIAL_PUNCTUATION = 28 , U_FINAL_PUNCTUATION = 29 , U_CHAR_CATEGORY_COUNT }
| Data for enumerated Unicode general category types. More...
enum | UCharDirection { U_LEFT_TO_RIGHT = 0 , U_RIGHT_TO_LEFT = 1 , U_EUROPEAN_NUMBER = 2 , U_EUROPEAN_NUMBER_SEPARATOR = 3 , U_EUROPEAN_NUMBER_TERMINATOR = 4 , U_ARABIC_NUMBER = 5 , U_COMMON_NUMBER_SEPARATOR = 6 , U_BLOCK_SEPARATOR = 7 , U_SEGMENT_SEPARATOR = 8 , U_WHITE_SPACE_NEUTRAL = 9 , U_OTHER_NEUTRAL = 10 , U_LEFT_TO_RIGHT_EMBEDDING = 11 , U_LEFT_TO_RIGHT_OVERRIDE = 12 , U_RIGHT_TO_LEFT_ARABIC = 13 , U_RIGHT_TO_LEFT_EMBEDDING = 14 , U_RIGHT_TO_LEFT_OVERRIDE = 15 , U_POP_DIRECTIONAL_FORMAT = 16 , U_DIR_NON_SPACING_MARK = 17 , U_BOUNDARY_NEUTRAL = 18 , U_FIRST_STRONG_ISOLATE = 19 , U_LEFT_TO_RIGHT_ISOLATE = 20 , U_RIGHT_TO_LEFT_ISOLATE = 21 , U_POP_DIRECTIONAL_ISOLATE = 22 , U_CHAR_DIRECTION_COUNT }
| This specifies the language directional property of a character set. More...
enum | UBidiPairedBracketType { U_BPT_NONE , U_BPT_OPEN , U_BPT_CLOSE , U_BPT_COUNT }
| Bidi Paired Bracket Type constants. More...
enum | UBlockCode { UBLOCK_NO_BLOCK = 0 , UBLOCK_BASIC_LATIN = 1 , UBLOCK_LATIN_1_SUPPLEMENT =2 , UBLOCK_LATIN_EXTENDED_A =3 , UBLOCK_LATIN_EXTENDED_B =4 , UBLOCK_IPA_EXTENSIONS =5 , UBLOCK_SPACING_MODIFIER_LETTERS =6 , UBLOCK_COMBINING_DIACRITICAL_MARKS =7 , UBLOCK_GREEK =8 , UBLOCK_CYRILLIC =9 , UBLOCK_ARMENIAN =10 , UBLOCK_HEBREW =11 , UBLOCK_ARABIC =12 , UBLOCK_SYRIAC =13 , UBLOCK_THAANA =14 , UBLOCK_DEVANAGARI =15 , UBLOCK_BENGALI =16 , UBLOCK_GURMUKHI =17 , UBLOCK_GUJARATI =18 , UBLOCK_ORIYA =19 , UBLOCK_TAMIL =20 , UBLOCK_TELUGU =21 , UBLOCK_KANNADA =22 , UBLOCK_MALAYALAM =23 , UBLOCK_SINHALA =24 , UBLOCK_THAI =25 , UBLOCK_LAO =26 , UBLOCK_TIBETAN =27 , UBLOCK_MYANMAR =28 , UBLOCK_GEORGIAN =29 , UBLOCK_HANGUL_JAMO =30 , UBLOCK_ETHIOPIC =31 , UBLOCK_CHEROKEE =32 , UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS =33 , UBLOCK_OGHAM =34 , UBLOCK_RUNIC =35 , UBLOCK_KHMER =36 , UBLOCK_MONGOLIAN =37 , UBLOCK_LATIN_EXTENDED_ADDITIONAL =38 , UBLOCK_GREEK_EXTENDED =39 , UBLOCK_GENERAL_PUNCTUATION =40 , UBLOCK_SUPERSCRIPTS_AND_SUBSCRIPTS =41 , UBLOCK_CURRENCY_SYMBOLS =42 , UBLOCK_COMBINING_MARKS_FOR_SYMBOLS =43 , UBLOCK_LETTERLIKE_SYMBOLS =44 , UBLOCK_NUMBER_FORMS =45 , UBLOCK_ARROWS =46 , UBLOCK_MATHEMATICAL_OPERATORS =47 , UBLOCK_MISCELLANEOUS_TECHNICAL =48 , UBLOCK_CONTROL_PICTURES =49 , UBLOCK_OPTICAL_CHARACTER_RECOGNITION =50 , UBLOCK_ENCLOSED_ALPHANUMERICS =51 , UBLOCK_BOX_DRAWING =52 , UBLOCK_BLOCK_ELEMENTS =53 , UBLOCK_GEOMETRIC_SHAPES =54 , UBLOCK_MISCELLANEOUS_SYMBOLS =55 , UBLOCK_DINGBATS =56 , UBLOCK_BRAILLE_PATTERNS =57 , UBLOCK_CJK_RADICALS_SUPPLEMENT =58 , UBLOCK_KANGXI_RADICALS =59 , UBLOCK_IDEOGRAPHIC_DESCRIPTION_CHARACTERS =60 , UBLOCK_CJK_SYMBOLS_AND_PUNCTUATION =61 , UBLOCK_HIRAGANA =62 , UBLOCK_KATAKANA =63 , UBLOCK_BOPOMOFO =64 , UBLOCK_HANGUL_COMPATIBILITY_JAMO =65 , UBLOCK_KANBUN =66 , UBLOCK_BOPOMOFO_EXTENDED =67 , UBLOCK_ENCLOSED_CJK_LETTERS_AND_MONTHS =68 , UBLOCK_CJK_COMPATIBILITY =69 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A =70 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS =71 , UBLOCK_YI_SYLLABLES =72 , UBLOCK_YI_RADICALS =73 , UBLOCK_HANGUL_SYLLABLES =74 , UBLOCK_HIGH_SURROGATES =75 , UBLOCK_HIGH_PRIVATE_USE_SURROGATES =76 , UBLOCK_LOW_SURROGATES =77 , UBLOCK_PRIVATE_USE_AREA =78 , UBLOCK_PRIVATE_USE = UBLOCK_PRIVATE_USE_AREA , UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS =79 , UBLOCK_ALPHABETIC_PRESENTATION_FORMS =80 , UBLOCK_ARABIC_PRESENTATION_FORMS_A =81 , UBLOCK_COMBINING_HALF_MARKS =82 , UBLOCK_CJK_COMPATIBILITY_FORMS =83 , UBLOCK_SMALL_FORM_VARIANTS =84 , UBLOCK_ARABIC_PRESENTATION_FORMS_B =85 , UBLOCK_SPECIALS =86 , UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS =87 , UBLOCK_OLD_ITALIC = 88 , UBLOCK_GOTHIC = 89 , UBLOCK_DESERET = 90 , UBLOCK_BYZANTINE_MUSICAL_SYMBOLS = 91 , UBLOCK_MUSICAL_SYMBOLS = 92 , UBLOCK_MATHEMATICAL_ALPHANUMERIC_SYMBOLS = 93 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B = 94 , UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT = 95 , UBLOCK_TAGS = 96 , UBLOCK_CYRILLIC_SUPPLEMENT = 97 , UBLOCK_CYRILLIC_SUPPLEMENTARY = UBLOCK_CYRILLIC_SUPPLEMENT , UBLOCK_TAGALOG = 98 , UBLOCK_HANUNOO = 99 , UBLOCK_BUHID = 100 , UBLOCK_TAGBANWA = 101 , UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A = 102 , UBLOCK_SUPPLEMENTAL_ARROWS_A = 103 , UBLOCK_SUPPLEMENTAL_ARROWS_B = 104 , UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B = 105 , UBLOCK_SUPPLEMENTAL_MATHEMATICAL_OPERATORS = 106 , UBLOCK_KATAKANA_PHONETIC_EXTENSIONS = 107 , UBLOCK_VARIATION_SELECTORS = 108 , UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_A = 109 , UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_B = 110 , UBLOCK_LIMBU = 111 , UBLOCK_TAI_LE = 112 , UBLOCK_KHMER_SYMBOLS = 113 , UBLOCK_PHONETIC_EXTENSIONS = 114 , UBLOCK_MISCELLANEOUS_SYMBOLS_AND_ARROWS = 115 , UBLOCK_YIJING_HEXAGRAM_SYMBOLS = 116 , UBLOCK_LINEAR_B_SYLLABARY = 117 , UBLOCK_LINEAR_B_IDEOGRAMS = 118 , UBLOCK_AEGEAN_NUMBERS = 119 , UBLOCK_UGARITIC = 120 , UBLOCK_SHAVIAN = 121 , UBLOCK_OSMANYA = 122 , UBLOCK_CYPRIOT_SYLLABARY = 123 , UBLOCK_TAI_XUAN_JING_SYMBOLS = 124 , UBLOCK_VARIATION_SELECTORS_SUPPLEMENT = 125 , UBLOCK_ANCIENT_GREEK_MUSICAL_NOTATION = 126 , UBLOCK_ANCIENT_GREEK_NUMBERS = 127 , UBLOCK_ARABIC_SUPPLEMENT = 128 , UBLOCK_BUGINESE = 129 , UBLOCK_CJK_STROKES = 130 , UBLOCK_COMBINING_DIACRITICAL_MARKS_SUPPLEMENT = 131 , UBLOCK_COPTIC = 132 , UBLOCK_ETHIOPIC_EXTENDED = 133 , UBLOCK_ETHIOPIC_SUPPLEMENT = 134 , UBLOCK_GEORGIAN_SUPPLEMENT = 135 , UBLOCK_GLAGOLITIC = 136 , UBLOCK_KHAROSHTHI = 137 , UBLOCK_MODIFIER_TONE_LETTERS = 138 , UBLOCK_NEW_TAI_LUE = 139 , UBLOCK_OLD_PERSIAN = 140 , UBLOCK_PHONETIC_EXTENSIONS_SUPPLEMENT = 141 , UBLOCK_SUPPLEMENTAL_PUNCTUATION = 142 , UBLOCK_SYLOTI_NAGRI = 143 , UBLOCK_TIFINAGH = 144 , UBLOCK_VERTICAL_FORMS = 145 , UBLOCK_NKO = 146 , UBLOCK_BALINESE = 147 , UBLOCK_LATIN_EXTENDED_C = 148 , UBLOCK_LATIN_EXTENDED_D = 149 , UBLOCK_PHAGS_PA = 150 , UBLOCK_PHOENICIAN = 151 , UBLOCK_CUNEIFORM = 152 , UBLOCK_CUNEIFORM_NUMBERS_AND_PUNCTUATION = 153 , UBLOCK_COUNTING_ROD_NUMERALS = 154 , UBLOCK_SUNDANESE = 155 , UBLOCK_LEPCHA = 156 , UBLOCK_OL_CHIKI = 157 , UBLOCK_CYRILLIC_EXTENDED_A = 158 , UBLOCK_VAI = 159 , UBLOCK_CYRILLIC_EXTENDED_B = 160 , UBLOCK_SAURASHTRA = 161 , UBLOCK_KAYAH_LI = 162 , UBLOCK_REJANG = 163 , UBLOCK_CHAM = 164 , UBLOCK_ANCIENT_SYMBOLS = 165 , UBLOCK_PHAISTOS_DISC = 166 , UBLOCK_LYCIAN = 167 , UBLOCK_CARIAN = 168 , UBLOCK_LYDIAN = 169 , UBLOCK_MAHJONG_TILES = 170 , UBLOCK_DOMINO_TILES = 171 , UBLOCK_SAMARITAN = 172 , UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED = 173 , UBLOCK_TAI_THAM = 174 , UBLOCK_VEDIC_EXTENSIONS = 175 , UBLOCK_LISU = 176 , UBLOCK_BAMUM = 177 , UBLOCK_COMMON_INDIC_NUMBER_FORMS = 178 , UBLOCK_DEVANAGARI_EXTENDED = 179 , UBLOCK_HANGUL_JAMO_EXTENDED_A = 180 , UBLOCK_JAVANESE = 181 , UBLOCK_MYANMAR_EXTENDED_A = 182 , UBLOCK_TAI_VIET = 183 , UBLOCK_MEETEI_MAYEK = 184 , UBLOCK_HANGUL_JAMO_EXTENDED_B = 185 , UBLOCK_IMPERIAL_ARAMAIC = 186 , UBLOCK_OLD_SOUTH_ARABIAN = 187 , UBLOCK_AVESTAN = 188 , UBLOCK_INSCRIPTIONAL_PARTHIAN = 189 , UBLOCK_INSCRIPTIONAL_PAHLAVI = 190 , UBLOCK_OLD_TURKIC = 191 , UBLOCK_RUMI_NUMERAL_SYMBOLS = 192 , UBLOCK_KAITHI = 193 , UBLOCK_EGYPTIAN_HIEROGLYPHS = 194 , UBLOCK_ENCLOSED_ALPHANUMERIC_SUPPLEMENT = 195 , UBLOCK_ENCLOSED_IDEOGRAPHIC_SUPPLEMENT = 196 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_C = 197 , UBLOCK_MANDAIC = 198 , UBLOCK_BATAK = 199 , UBLOCK_ETHIOPIC_EXTENDED_A = 200 , UBLOCK_BRAHMI = 201 , UBLOCK_BAMUM_SUPPLEMENT = 202 , UBLOCK_KANA_SUPPLEMENT = 203 , UBLOCK_PLAYING_CARDS = 204 , UBLOCK_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS = 205 , UBLOCK_EMOTICONS = 206 , UBLOCK_TRANSPORT_AND_MAP_SYMBOLS = 207 , UBLOCK_ALCHEMICAL_SYMBOLS = 208 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_D = 209 , UBLOCK_ARABIC_EXTENDED_A = 210 , UBLOCK_ARABIC_MATHEMATICAL_ALPHABETIC_SYMBOLS = 211 , UBLOCK_CHAKMA = 212 , UBLOCK_MEETEI_MAYEK_EXTENSIONS = 213 , UBLOCK_MEROITIC_CURSIVE = 214 , UBLOCK_MEROITIC_HIEROGLYPHS = 215 , UBLOCK_MIAO = 216 , UBLOCK_SHARADA = 217 , UBLOCK_SORA_SOMPENG = 218 , UBLOCK_SUNDANESE_SUPPLEMENT = 219 , UBLOCK_TAKRI = 220 , UBLOCK_BASSA_VAH = 221 , UBLOCK_CAUCASIAN_ALBANIAN = 222 , UBLOCK_COPTIC_EPACT_NUMBERS = 223 , UBLOCK_COMBINING_DIACRITICAL_MARKS_EXTENDED = 224 , UBLOCK_DUPLOYAN = 225 , UBLOCK_ELBASAN = 226 , UBLOCK_GEOMETRIC_SHAPES_EXTENDED = 227 , UBLOCK_GRANTHA = 228 , UBLOCK_KHOJKI = 229 , UBLOCK_KHUDAWADI = 230 , UBLOCK_LATIN_EXTENDED_E = 231 , UBLOCK_LINEAR_A = 232 , UBLOCK_MAHAJANI = 233 , UBLOCK_MANICHAEAN = 234 , UBLOCK_MENDE_KIKAKUI = 235 , UBLOCK_MODI = 236 , UBLOCK_MRO = 237 , UBLOCK_MYANMAR_EXTENDED_B = 238 , UBLOCK_NABATAEAN = 239 , UBLOCK_OLD_NORTH_ARABIAN = 240 , UBLOCK_OLD_PERMIC = 241 , UBLOCK_ORNAMENTAL_DINGBATS = 242 , UBLOCK_PAHAWH_HMONG = 243 , UBLOCK_PALMYRENE = 244 , UBLOCK_PAU_CIN_HAU = 245 , UBLOCK_PSALTER_PAHLAVI = 246 , UBLOCK_SHORTHAND_FORMAT_CONTROLS = 247 , UBLOCK_SIDDHAM = 248 , UBLOCK_SINHALA_ARCHAIC_NUMBERS = 249 , UBLOCK_SUPPLEMENTAL_ARROWS_C = 250 , UBLOCK_TIRHUTA = 251 , UBLOCK_WARANG_CITI = 252 , UBLOCK_AHOM = 253 , UBLOCK_ANATOLIAN_HIEROGLYPHS = 254 , UBLOCK_CHEROKEE_SUPPLEMENT = 255 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_E = 256 , UBLOCK_EARLY_DYNASTIC_CUNEIFORM = 257 , UBLOCK_HATRAN = 258 , UBLOCK_MULTANI = 259 , UBLOCK_OLD_HUNGARIAN = 260 , UBLOCK_SUPPLEMENTAL_SYMBOLS_AND_PICTOGRAPHS = 261 , UBLOCK_SUTTON_SIGNWRITING = 262 , UBLOCK_ADLAM = 263 , UBLOCK_BHAIKSUKI = 264 , UBLOCK_CYRILLIC_EXTENDED_C = 265 , UBLOCK_GLAGOLITIC_SUPPLEMENT = 266 , UBLOCK_IDEOGRAPHIC_SYMBOLS_AND_PUNCTUATION = 267 , UBLOCK_MARCHEN = 268 , UBLOCK_MONGOLIAN_SUPPLEMENT = 269 , UBLOCK_NEWA = 270 , UBLOCK_OSAGE = 271 , UBLOCK_TANGUT = 272 , UBLOCK_TANGUT_COMPONENTS = 273 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_F = 274 , UBLOCK_KANA_EXTENDED_A = 275 , UBLOCK_MASARAM_GONDI = 276 , UBLOCK_NUSHU = 277 , UBLOCK_SOYOMBO = 278 , UBLOCK_SYRIAC_SUPPLEMENT = 279 , UBLOCK_ZANABAZAR_SQUARE = 280 , UBLOCK_CHESS_SYMBOLS = 281 , UBLOCK_DOGRA = 282 , UBLOCK_GEORGIAN_EXTENDED = 283 , UBLOCK_GUNJALA_GONDI = 284 , UBLOCK_HANIFI_ROHINGYA = 285 , UBLOCK_INDIC_SIYAQ_NUMBERS = 286 , UBLOCK_MAKASAR = 287 , UBLOCK_MAYAN_NUMERALS = 288 , UBLOCK_MEDEFAIDRIN = 289 , UBLOCK_OLD_SOGDIAN = 290 , UBLOCK_SOGDIAN = 291 , UBLOCK_EGYPTIAN_HIEROGLYPH_FORMAT_CONTROLS = 292 , UBLOCK_ELYMAIC = 293 , UBLOCK_NANDINAGARI = 294 , UBLOCK_NYIAKENG_PUACHUE_HMONG = 295 , UBLOCK_OTTOMAN_SIYAQ_NUMBERS = 296 , UBLOCK_SMALL_KANA_EXTENSION = 297 , UBLOCK_SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A = 298 , UBLOCK_TAMIL_SUPPLEMENT = 299 , UBLOCK_WANCHO = 300 , UBLOCK_CHORASMIAN = 301 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_G = 302 , UBLOCK_DIVES_AKURU = 303 , UBLOCK_KHITAN_SMALL_SCRIPT = 304 , UBLOCK_LISU_SUPPLEMENT = 305 , UBLOCK_SYMBOLS_FOR_LEGACY_COMPUTING = 306 , UBLOCK_TANGUT_SUPPLEMENT = 307 , UBLOCK_YEZIDI = 308 , UBLOCK_ARABIC_EXTENDED_B = 309 , UBLOCK_CYPRO_MINOAN = 310 , UBLOCK_ETHIOPIC_EXTENDED_B = 311 , UBLOCK_KANA_EXTENDED_B = 312 , UBLOCK_LATIN_EXTENDED_F = 313 , UBLOCK_LATIN_EXTENDED_G = 314 , UBLOCK_OLD_UYGHUR = 315 , UBLOCK_TANGSA = 316 , UBLOCK_TOTO = 317 , UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED_A = 318 , UBLOCK_VITHKUQI = 319 , UBLOCK_ZNAMENNY_MUSICAL_NOTATION = 320 , UBLOCK_ARABIC_EXTENDED_C = 321 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_H = 322 , UBLOCK_CYRILLIC_EXTENDED_D = 323 , UBLOCK_DEVANAGARI_EXTENDED_A = 324 , UBLOCK_KAKTOVIK_NUMERALS = 325 , UBLOCK_KAWI = 326 , UBLOCK_NAG_MUNDARI = 327 , UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_I = 328 , UBLOCK_EGYPTIAN_HIEROGLYPHS_EXTENDED_A = 329 , UBLOCK_GARAY = 330 , UBLOCK_GURUNG_KHEMA = 331 , UBLOCK_KIRAT_RAI = 332 , UBLOCK_MYANMAR_EXTENDED_C = 333 , UBLOCK_OL_ONAL = 334 , UBLOCK_SUNUWAR = 335 , UBLOCK_SYMBOLS_FOR_LEGACY_COMPUTING_SUPPLEMENT = 336 , UBLOCK_TODHRI = 337 , UBLOCK_TULU_TIGALARI = 338 , UBLOCK_COUNT = 339 , UBLOCK_INVALID_CODE =-1 }
| Constants for Unicode blocks, see the Unicode Data file Blocks.txt. More...
enum | UEastAsianWidth { U_EA_NEUTRAL , U_EA_AMBIGUOUS , U_EA_HALFWIDTH , U_EA_FULLWIDTH , U_EA_NARROW , U_EA_WIDE , U_EA_COUNT }
| East Asian Width constants. More...
enum | UCharNameChoice { U_UNICODE_CHAR_NAME , U_UNICODE_10_CHAR_NAME , U_EXTENDED_CHAR_NAME = U_UNICODE_CHAR_NAME+2 , U_CHAR_NAME_ALIAS , U_CHAR_NAME_CHOICE_COUNT }
| Selector constants for u_charName(). More...
enum | UPropertyNameChoice { U_SHORT_PROPERTY_NAME , U_LONG_PROPERTY_NAME , U_PROPERTY_NAME_CHOICE_COUNT }
| Selector constants for u_getPropertyName() and u_getPropertyValueName(). More...
enum | UDecompositionType { U_DT_NONE , U_DT_CANONICAL , U_DT_COMPAT , U_DT_CIRCLE , U_DT_FINAL , U_DT_FONT , U_DT_FRACTION , U_DT_INITIAL , U_DT_ISOLATED , U_DT_MEDIAL , U_DT_NARROW , U_DT_NOBREAK , U_DT_SMALL , U_DT_SQUARE , U_DT_SUB , U_DT_SUPER , U_DT_VERTICAL , U_DT_WIDE , U_DT_COUNT }
| Decomposition Type constants. More...
enum | UJoiningType { U_JT_NON_JOINING , U_JT_JOIN_CAUSING , U_JT_DUAL_JOINING , U_JT_LEFT_JOINING , U_JT_RIGHT_JOINING , U_JT_TRANSPARENT , U_JT_COUNT }
| Joining Type constants. More...
enum | UJoiningGroup { U_JG_NO_JOINING_GROUP , U_JG_AIN , U_JG_ALAPH , U_JG_ALEF , U_JG_BEH , U_JG_BETH , U_JG_DAL , U_JG_DALATH_RISH , U_JG_E , U_JG_FEH , U_JG_FINAL_SEMKATH , U_JG_GAF , U_JG_GAMAL , U_JG_HAH , U_JG_TEH_MARBUTA_GOAL , U_JG_HAMZA_ON_HEH_GOAL =U_JG_TEH_MARBUTA_GOAL , U_JG_HE , U_JG_HEH , U_JG_HEH_GOAL , U_JG_HETH , U_JG_KAF , U_JG_KAPH , U_JG_KNOTTED_HEH , U_JG_LAM , U_JG_LAMADH , U_JG_MEEM , U_JG_MIM , U_JG_NOON , U_JG_NUN , U_JG_PE , U_JG_QAF , U_JG_QAPH , U_JG_REH , U_JG_REVERSED_PE , U_JG_SAD , U_JG_SADHE , U_JG_SEEN , U_JG_SEMKATH , U_JG_SHIN , U_JG_SWASH_KAF , U_JG_SYRIAC_WAW , U_JG_TAH , U_JG_TAW , U_JG_TEH_MARBUTA , U_JG_TETH , U_JG_WAW , U_JG_YEH , U_JG_YEH_BARREE , U_JG_YEH_WITH_TAIL , U_JG_YUDH , U_JG_YUDH_HE , U_JG_ZAIN , U_JG_FE , U_JG_KHAPH , U_JG_ZHAIN , U_JG_BURUSHASKI_YEH_BARREE , U_JG_FARSI_YEH , U_JG_NYA , U_JG_ROHINGYA_YEH , U_JG_MANICHAEAN_ALEPH , U_JG_MANICHAEAN_AYIN , U_JG_MANICHAEAN_BETH , U_JG_MANICHAEAN_DALETH , U_JG_MANICHAEAN_DHAMEDH , U_JG_MANICHAEAN_FIVE , U_JG_MANICHAEAN_GIMEL , U_JG_MANICHAEAN_HETH , U_JG_MANICHAEAN_HUNDRED , U_JG_MANICHAEAN_KAPH , U_JG_MANICHAEAN_LAMEDH , U_JG_MANICHAEAN_MEM , U_JG_MANICHAEAN_NUN , U_JG_MANICHAEAN_ONE , U_JG_MANICHAEAN_PE , U_JG_MANICHAEAN_QOPH , U_JG_MANICHAEAN_RESH , U_JG_MANICHAEAN_SADHE , U_JG_MANICHAEAN_SAMEKH , U_JG_MANICHAEAN_TAW , U_JG_MANICHAEAN_TEN , U_JG_MANICHAEAN_TETH , U_JG_MANICHAEAN_THAMEDH , U_JG_MANICHAEAN_TWENTY , U_JG_MANICHAEAN_WAW , U_JG_MANICHAEAN_YODH , U_JG_MANICHAEAN_ZAYIN , U_JG_STRAIGHT_WAW , U_JG_AFRICAN_FEH , U_JG_AFRICAN_NOON , U_JG_AFRICAN_QAF , U_JG_MALAYALAM_BHA , U_JG_MALAYALAM_JA , U_JG_MALAYALAM_LLA , U_JG_MALAYALAM_LLLA , U_JG_MALAYALAM_NGA , U_JG_MALAYALAM_NNA , U_JG_MALAYALAM_NNNA , U_JG_MALAYALAM_NYA , U_JG_MALAYALAM_RA , U_JG_MALAYALAM_SSA , U_JG_MALAYALAM_TTA , U_JG_HANIFI_ROHINGYA_KINNA_YA , U_JG_HANIFI_ROHINGYA_PA , U_JG_THIN_YEH , U_JG_VERTICAL_TAIL , U_JG_KASHMIRI_YEH , U_JG_COUNT }
| Joining Group constants. More...
enum | UGraphemeClusterBreak { U_GCB_OTHER = 0 , U_GCB_CONTROL = 1 , U_GCB_CR = 2 , U_GCB_EXTEND = 3 , U_GCB_L = 4 , U_GCB_LF = 5 , U_GCB_LV = 6 , U_GCB_LVT = 7 , U_GCB_T = 8 , U_GCB_V = 9 , U_GCB_SPACING_MARK = 10 , U_GCB_PREPEND = 11 , U_GCB_REGIONAL_INDICATOR = 12 , U_GCB_E_BASE = 13 , U_GCB_E_BASE_GAZ = 14 , U_GCB_E_MODIFIER = 15 , U_GCB_GLUE_AFTER_ZWJ = 16 , U_GCB_ZWJ = 17 , U_GCB_COUNT = 18 }
| Grapheme Cluster Break constants. More...
enum | UWordBreakValues { U_WB_OTHER = 0 , U_WB_ALETTER = 1 , U_WB_FORMAT = 2 , U_WB_KATAKANA = 3 , U_WB_MIDLETTER = 4 , U_WB_MIDNUM = 5 , U_WB_NUMERIC = 6 , U_WB_EXTENDNUMLET = 7 , U_WB_CR = 8 , U_WB_EXTEND = 9 , U_WB_LF = 10 , U_WB_MIDNUMLET =11 , U_WB_NEWLINE =12 , U_WB_REGIONAL_INDICATOR = 13 , U_WB_HEBREW_LETTER = 14 , U_WB_SINGLE_QUOTE = 15 , U_WB_DOUBLE_QUOTE = 16 , U_WB_E_BASE = 17 , U_WB_E_BASE_GAZ = 18 , U_WB_E_MODIFIER = 19 , U_WB_GLUE_AFTER_ZWJ = 20 , U_WB_ZWJ = 21 , U_WB_WSEGSPACE = 22 , U_WB_COUNT = 23 }
| Word Break constants. More...
enum | USentenceBreak { U_SB_OTHER = 0 , U_SB_ATERM = 1 , U_SB_CLOSE = 2 , U_SB_FORMAT = 3 , U_SB_LOWER = 4 , U_SB_NUMERIC = 5 , U_SB_OLETTER = 6 , U_SB_SEP = 7 , U_SB_SP = 8 , U_SB_STERM = 9 , U_SB_UPPER = 10 , U_SB_CR = 11 , U_SB_EXTEND = 12 , U_SB_LF = 13 , U_SB_SCONTINUE = 14 , U_SB_COUNT = 15 }
| Sentence Break constants. More...
enum | ULineBreak { U_LB_UNKNOWN = 0 , U_LB_AMBIGUOUS = 1 , U_LB_ALPHABETIC = 2 , U_LB_BREAK_BOTH = 3 , U_LB_BREAK_AFTER = 4 , U_LB_BREAK_BEFORE = 5 , U_LB_MANDATORY_BREAK = 6 , U_LB_CONTINGENT_BREAK = 7 , U_LB_CLOSE_PUNCTUATION = 8 , U_LB_COMBINING_MARK = 9 , U_LB_CARRIAGE_RETURN = 10 , U_LB_EXCLAMATION = 11 , U_LB_GLUE = 12 , U_LB_HYPHEN = 13 , U_LB_IDEOGRAPHIC = 14 , U_LB_INSEPARABLE = 15 , U_LB_INSEPERABLE = U_LB_INSEPARABLE , U_LB_INFIX_NUMERIC = 16 , U_LB_LINE_FEED = 17 , U_LB_NONSTARTER = 18 , U_LB_NUMERIC = 19 , U_LB_OPEN_PUNCTUATION = 20 , U_LB_POSTFIX_NUMERIC = 21 , U_LB_PREFIX_NUMERIC = 22 , U_LB_QUOTATION = 23 , U_LB_COMPLEX_CONTEXT = 24 , U_LB_SURROGATE = 25 , U_LB_SPACE = 26 , U_LB_BREAK_SYMBOLS = 27 , U_LB_ZWSPACE = 28 , U_LB_NEXT_LINE = 29 , U_LB_WORD_JOINER = 30 , U_LB_H2 = 31 , U_LB_H3 = 32 , U_LB_JL = 33 , U_LB_JT = 34 , U_LB_JV = 35 , U_LB_CLOSE_PARENTHESIS = 36 , U_LB_CONDITIONAL_JAPANESE_STARTER = 37 , U_LB_HEBREW_LETTER = 38 , U_LB_REGIONAL_INDICATOR = 39 , U_LB_E_BASE = 40 , U_LB_E_MODIFIER = 41 , U_LB_ZWJ = 42 , U_LB_AKSARA = 43 , U_LB_AKSARA_PREBASE = 44 , U_LB_AKSARA_START = 45 , U_LB_VIRAMA_FINAL = 46 , U_LB_VIRAMA = 47 , U_LB_COUNT = 48 }
| Line Break constants. More...
enum | UNumericType { U_NT_NONE , U_NT_DECIMAL , U_NT_DIGIT , U_NT_NUMERIC , U_NT_COUNT }
| Numeric Type constants. More...
enum | UHangulSyllableType { U_HST_NOT_APPLICABLE , U_HST_LEADING_JAMO , U_HST_VOWEL_JAMO , U_HST_TRAILING_JAMO , U_HST_LV_SYLLABLE , U_HST_LVT_SYLLABLE , U_HST_COUNT }
| Hangul Syllable Type constants. More...
enum | UIndicPositionalCategory { U_INPC_NA , U_INPC_BOTTOM , U_INPC_BOTTOM_AND_LEFT , U_INPC_BOTTOM_AND_RIGHT , U_INPC_LEFT , U_INPC_LEFT_AND_RIGHT , U_INPC_OVERSTRUCK , U_INPC_RIGHT , U_INPC_TOP , U_INPC_TOP_AND_BOTTOM , U_INPC_TOP_AND_BOTTOM_AND_RIGHT , U_INPC_TOP_AND_LEFT , U_INPC_TOP_AND_LEFT_AND_RIGHT , U_INPC_TOP_AND_RIGHT , U_INPC_VISUAL_ORDER_LEFT , U_INPC_TOP_AND_BOTTOM_AND_LEFT }
| Indic Positional Category constants. More...
enum | UIndicSyllabicCategory { U_INSC_OTHER , U_INSC_AVAGRAHA , U_INSC_BINDU , U_INSC_BRAHMI_JOINING_NUMBER , U_INSC_CANTILLATION_MARK , U_INSC_CONSONANT , U_INSC_CONSONANT_DEAD , U_INSC_CONSONANT_FINAL , U_INSC_CONSONANT_HEAD_LETTER , U_INSC_CONSONANT_INITIAL_POSTFIXED , U_INSC_CONSONANT_KILLER , U_INSC_CONSONANT_MEDIAL , U_INSC_CONSONANT_PLACEHOLDER , U_INSC_CONSONANT_PRECEDING_REPHA , U_INSC_CONSONANT_PREFIXED , U_INSC_CONSONANT_SUBJOINED , U_INSC_CONSONANT_SUCCEEDING_REPHA , U_INSC_CONSONANT_WITH_STACKER , U_INSC_GEMINATION_MARK , U_INSC_INVISIBLE_STACKER , U_INSC_JOINER , U_INSC_MODIFYING_LETTER , U_INSC_NON_JOINER , U_INSC_NUKTA , U_INSC_NUMBER , U_INSC_NUMBER_JOINER , U_INSC_PURE_KILLER , U_INSC_REGISTER_SHIFTER , U_INSC_SYLLABLE_MODIFIER , U_INSC_TONE_LETTER , U_INSC_TONE_MARK , U_INSC_VIRAMA , U_INSC_VISARGA , U_INSC_VOWEL , U_INSC_VOWEL_DEPENDENT , U_INSC_VOWEL_INDEPENDENT , U_INSC_REORDERING_KILLER }
| Indic Syllabic Category constants. More...
enum | UIndicConjunctBreak { U_INCB_NONE , U_INCB_CONSONANT , U_INCB_EXTEND , U_INCB_LINKER }
| Indic Conjunct Break constants. More...
enum | UVerticalOrientation { U_VO_ROTATED , U_VO_TRANSFORMED_ROTATED , U_VO_TRANSFORMED_UPRIGHT , U_VO_UPRIGHT }
| Vertical Orientation constants. More...
enum | UIdentifierStatus { U_ID_STATUS_RESTRICTED , U_ID_STATUS_ALLOWED }
| Identifier Status constants. More...
enum | UIdentifierType { U_ID_TYPE_NOT_CHARACTER , U_ID_TYPE_DEPRECATED , U_ID_TYPE_DEFAULT_IGNORABLE , U_ID_TYPE_NOT_NFKC , U_ID_TYPE_NOT_XID , U_ID_TYPE_EXCLUSION , U_ID_TYPE_OBSOLETE , U_ID_TYPE_TECHNICAL , U_ID_TYPE_UNCOMMON_USE , U_ID_TYPE_LIMITED_USE , U_ID_TYPE_INCLUSION , U_ID_TYPE_RECOMMENDED }
| Identifier Type constants. More...

## Functions
U_CAPI UBool | u_hasBinaryProperty (UChar32 c, UProperty which)
| Check a binary Unicode property for a code point.
U_CAPI UBool | u_stringHasBinaryProperty (const UChar *s, int32_t length, UProperty which)
| Returns true if the property is true for the string.
U_CAPI const USet * | u_getBinaryPropertySet (UProperty property, UErrorCode *pErrorCode)
| Returns a frozen USet for a binary property.
U_CAPI UBool | u_isUAlphabetic (UChar32 c)
| Check if a code point has the Alphabetic Unicode property.
U_CAPI UBool | u_isULowercase (UChar32 c)
| Check if a code point has the Lowercase Unicode property.
U_CAPI UBool | u_isUUppercase (UChar32 c)
| Check if a code point has the Uppercase Unicode property.
U_CAPI UBool | u_isUWhiteSpace (UChar32 c)
| Check if a code point has the White_Space Unicode property.
U_CAPI int32_t | u_getIntPropertyValue (UChar32 c, UProperty which)
| Get the property value for an enumerated or integer Unicode property for a code point.
U_CAPI int32_t | u_getIntPropertyMinValue (UProperty which)
| Get the minimum value for an enumerated/integer/binary Unicode property.
U_CAPI int32_t | u_getIntPropertyMaxValue (UProperty which)
| Get the maximum value for an enumerated/integer/binary Unicode property.
U_CAPI const UCPMap * | u_getIntPropertyMap (UProperty property, UErrorCode *pErrorCode)
| Returns an immutable UCPMap for an enumerated/catalog/int-valued property.
U_CAPI double | u_getNumericValue (UChar32 c)
| Get the numeric value for a Unicode code point as defined in the Unicode Character Database.
U_CAPI UBool | u_islower (UChar32 c)
| Determines whether the specified code point has the general category "Ll" (lowercase letter).
U_CAPI UBool | u_isupper (UChar32 c)
| Determines whether the specified code point has the general category "Lu" (uppercase letter).
U_CAPI UBool | u_istitle (UChar32 c)
| Determines whether the specified code point is a titlecase letter.
U_CAPI UBool | u_isdigit (UChar32 c)
| Determines whether the specified code point is a digit character according to Java.
U_CAPI UBool | u_isalpha (UChar32 c)
| Determines whether the specified code point is a letter character.
U_CAPI UBool | u_isalnum (UChar32 c)
| Determines whether the specified code point is an alphanumeric character (letter or digit) according to Java.
U_CAPI UBool | u_isxdigit (UChar32 c)
| Determines whether the specified code point is a hexadecimal digit.
U_CAPI UBool | u_ispunct (UChar32 c)
| Determines whether the specified code point is a punctuation character.
U_CAPI UBool | u_isgraph (UChar32 c)
| Determines whether the specified code point is a "graphic" character (printable, excluding spaces).
U_CAPI UBool | u_isblank (UChar32 c)
| Determines whether the specified code point is a "blank" or "horizontal space", a character that visibly separates words on a line.
U_CAPI UBool | u_isdefined (UChar32 c)
| Determines whether the specified code point is "defined", which usually means that it is assigned a character.
U_CAPI UBool | u_isspace (UChar32 c)
| Determines if the specified character is a space character or not.
U_CAPI UBool | u_isJavaSpaceChar (UChar32 c)
| Determine if the specified code point is a space character according to Java.
U_CAPI UBool | u_isWhitespace (UChar32 c)
| Determines if the specified code point is a whitespace character according to Java/ICU.
U_CAPI UBool | u_iscntrl (UChar32 c)
| Determines whether the specified code point is a control character (as defined by this function).
U_CAPI UBool | u_isISOControl (UChar32 c)
| Determines whether the specified code point is an ISO control code.
U_CAPI UBool | u_isprint (UChar32 c)
| Determines whether the specified code point is a printable character.
U_CAPI UBool | u_isbase (UChar32 c)
| Non-standard: Determines whether the specified code point is a base character.
U_CAPI UCharDirection | u_charDirection (UChar32 c)
| Returns the bidirectional category value for the code point, which is used in the Unicode bidirectional algorithm (UAX #9 http://www.unicode.org/reports/tr9/).
U_CAPI UBool | u_isMirrored (UChar32 c)
| Determines whether the code point has the Bidi_Mirrored property.
U_CAPI UChar32 | u_charMirror (UChar32 c)
| Maps the specified character to a "mirror-image" character.
U_CAPI UChar32 | u_getBidiPairedBracket (UChar32 c)
| Maps the specified character to its paired bracket character.
U_CAPI int8_t | u_charType (UChar32 c)
| Returns the general category value for the code point.
U_CAPI void | u_enumCharTypes (UCharEnumTypeRange *enumRange, const void *context)
| Enumerate efficiently all code points with their Unicode general categories.
U_CAPI uint8_t | u_getCombiningClass (UChar32 c)
| Returns the combining class of the code point as specified in UnicodeData.txt.
U_CAPI int32_t | u_charDigitValue (UChar32 c)
| Returns the decimal digit value of a decimal digit character.
U_CAPI UBlockCode | ublock_getCode (UChar32 c)
| Returns the Unicode allocation block that contains the character.
U_CAPI int32_t | u_charName (UChar32 code, UCharNameChoice nameChoice, char *buffer, int32_t bufferLength, UErrorCode *pErrorCode)
| Retrieve the name of a Unicode character.
int32_t | u_getISOComment (UChar32 c, char *dest, int32_t destCapacity, UErrorCode *pErrorCode)
| Returns an empty string.
U_CAPI UChar32 | u_charFromName (UCharNameChoice nameChoice, const char *name, UErrorCode *pErrorCode)
| Find a Unicode character by its name and return its code point value.
U_CAPI void | u_enumCharNames (UChar32 start, UChar32 limit, UEnumCharNamesFn *fn, void *context, UCharNameChoice nameChoice, UErrorCode *pErrorCode)
| Enumerate all assigned Unicode characters between the start and limit code points (start inclusive, limit exclusive) and call a function for each, passing the code point value and the character name.
U_CAPI const char * | u_getPropertyName (UProperty property, UPropertyNameChoice nameChoice)
| Return the Unicode name for a given property, as given in the Unicode database file PropertyAliases.txt.
U_CAPI UProperty | u_getPropertyEnum (const char *alias)
| Return the UProperty enum for a given property name, as specified in the Unicode database file PropertyAliases.txt.
U_CAPI const char * | u_getPropertyValueName (UProperty property, int32_t value, UPropertyNameChoice nameChoice)
| Return the Unicode name for a given property value, as given in the Unicode database file PropertyValueAliases.txt.
U_CAPI int32_t | u_getPropertyValueEnum (UProperty property, const char *alias)
| Return the property value integer for a given value name, as specified in the Unicode database file PropertyValueAliases.txt.
U_CAPI UBool | u_isIDStart (UChar32 c)
| Determines if the specified character is permissible as the first character in an identifier according to UAX #31 Unicode Identifier and Pattern Syntax.
U_CAPI UBool | u_isIDPart (UChar32 c)
| Determines if the specified character is permissible as a non-initial character of an identifier according to UAX #31 Unicode Identifier and Pattern Syntax.
U_CAPI bool | u_hasIDType (UChar32 c, UIdentifierType type)
| Does the set of Identifier_Type values code point c contain the given type?
U_CAPI int32_t | u_getIDTypes (UChar32 c, UIdentifierType *types, int32_t capacity, UErrorCode *pErrorCode)
| Writes code point c's Identifier_Type as a list of UIdentifierType values to the output types array and returns the number of types.
U_CAPI UBool | u_isIDIgnorable (UChar32 c)
| Determines if the specified character should be regarded as an ignorable character in an identifier, according to Java.
U_CAPI UBool | u_isJavaIDStart (UChar32 c)
| Determines if the specified character is permissible as the first character in a Java identifier.
U_CAPI UBool | u_isJavaIDPart (UChar32 c)
| Determines if the specified character is permissible in a Java identifier.
U_CAPI UChar32 | u_tolower (UChar32 c)
| The given character is mapped to its lowercase equivalent according to UnicodeData.txt; if the character has no lowercase equivalent, the character itself is returned.
U_CAPI UChar32 | u_toupper (UChar32 c)
| The given character is mapped to its uppercase equivalent according to UnicodeData.txt; if the character has no uppercase equivalent, the character itself is returned.
U_CAPI UChar32 | u_totitle (UChar32 c)
| The given character is mapped to its titlecase equivalent according to UnicodeData.txt; if none is defined, the character itself is returned.
U_CAPI UChar32 | u_foldCase (UChar32 c, uint32_t options)
| The given character is mapped to its case folding equivalent according to UnicodeData.txt and CaseFolding.txt; if the character has no case folding equivalent, the character itself is returned.
U_CAPI int32_t | u_digit (UChar32 ch, int8_t radix)
| Returns the decimal digit value of the code point in the specified radix.
U_CAPI UChar32 | u_forDigit (int32_t digit, int8_t radix)
| Determines the character representation for a specific digit in the specified radix.
U_CAPI void | u_charAge (UChar32 c, UVersionInfo versionArray)
| Get the "age" of the code point.
U_CAPI void | u_getUnicodeVersion (UVersionInfo versionArray)
| Gets the Unicode version information.
U_CAPI int32_t | u_getFC_NFKC_Closure (UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode)
| Get the FC_NFKC_Closure property string for a character.

## Detailed Description

C API: Unicode Properties.

This C API provides low-level access to the Unicode Character Database. In addition to raw property values, some convenience functions calculate derived properties, for example for Java-style programming.

Unicode assigns each code point (not just assigned character) values for many properties. Most of them are simple boolean flags, or constants from a small enumerated list. For some properties, values are strings or other relatively more complex types.

For more information see "About the Unicode Character Database" (http://www.unicode.org/ucd/) and the ICU User Guide chapter on Properties (https://unicode-org.github.io/icu/userguide/strings/properties).

Many properties are accessible via generic functions that take a UProperty selector.

- u_hasBinaryProperty() returns a binary value (true/false) per property and code point.
- u_getIntPropertyValue() returns an integer value per property and code point. For each supported enumerated or catalog property, there is an enum type for all of the property's values, and u_getIntPropertyValue() returns the numeric values of those constants.
- u_getBinaryPropertySet() returns a set for each ICU-supported binary property with all code points for which the property is true.
- u_getIntPropertyMap() returns a map for each ICU-supported enumerated/catalog/int-valued property which maps all Unicode code points to their values for that property.

Many functions are designed to match java.lang.Character functions. See the individual function documentation, and see the JDK 1.4 java.lang.Character documentation at http://java.sun.com/j2se/1.4/docs/api/java/lang/Character.html

There are also functions that provide easy migration from C/POSIX functions like isblank(). Their use is generally discouraged because the C/POSIX standards do not define their semantics beyond the ASCII range, which means that different implementations exhibit very different behavior. Instead, Unicode properties should be used directly.

There are also only a few, broad C/POSIX character classes, and they tend to be used for conflicting purposes. For example, the "isalpha()" class is sometimes used to determine word boundaries, while a more sophisticated approach would at least distinguish initial letters from continuation characters (the latter including combining marks). (In ICU, BreakIterator is the most sophisticated API for word boundaries.) Another example: There is no "istitle()" class for titlecase characters.

ICU 3.4 and later provides API access for all twelve C/POSIX character classes. ICU implements them according to the Standard Recommendations in Annex C: Compatibility Properties of UTS #18 Unicode Regular Expressions (http://www.unicode.org/reports/tr18/#Compatibility_Properties).

API access for C/POSIX character classes is as follows:

- alpha: u_isUAlphabetic(c) or u_hasBinaryProperty(c, UCHAR_ALPHABETIC)
- lower: u_isULowercase(c) or u_hasBinaryProperty(c, UCHAR_LOWERCASE)
- upper: u_isUUppercase(c) or u_hasBinaryProperty(c, UCHAR_UPPERCASE)
- punct: u_ispunct(c)
- digit: u_isdigit(c) or u_charType(c)==U_DECIMAL_DIGIT_NUMBER
- xdigit: u_isxdigit(c) or u_hasBinaryProperty(c, UCHAR_POSIX_XDIGIT)
- alnum: u_hasBinaryProperty(c, UCHAR_POSIX_ALNUM)
- space: u_isUWhiteSpace(c) or u_hasBinaryProperty(c, UCHAR_WHITE_SPACE)
- blank: u_isblank(c) or u_hasBinaryProperty(c, UCHAR_POSIX_BLANK)
- cntrl: u_charType(c)==U_CONTROL_CHAR
- graph: u_hasBinaryProperty(c, UCHAR_POSIX_GRAPH)
- print: u_hasBinaryProperty(c, UCHAR_POSIX_PRINT)

Note: Some of the u_isxyz() functions in uchar.h predate, and do not match, the Standard Recommendations in UTS #18. Instead, they match Java functions according to their API documentation.

The C/POSIX character classes are also available in UnicodeSet patterns, using patterns like [:graph:] or \p{graph}.

Note: There are several ICU whitespace functions. Comparison:

- u_isUWhiteSpace=UCHAR_WHITE_SPACE: Unicode White_Space property; most of general categories "Z" (separators) + most whitespace ISO controls (including no-break spaces, but excluding IS1..IS4)
- u_isWhitespace: Java isWhitespace; Z + whitespace ISO controls but excluding no-break spaces
- u_isJavaSpaceChar: Java isSpaceChar; just Z (including no-break spaces)
- u_isspace: Z + whitespace ISO controls (including no-break spaces)
- u_isblank: "horizontal spaces" = TAB + Zs

Definition in file uchar.h.

## Macro Definition Documentation

## ◆ U_GC_C_MASK

#define U_GC_C_MASK (U_GC_CN_MASK|U_GC_CC_MASK|U_GC_CF_MASK|U_GC_CO_MASK|U_GC_CS_MASK)

Mask constant for multiple UCharCategory bits (C Others).

Stable
  ICU 2.1

Definition at line 1014 of file uchar.h.

## ◆ U_GC_CC_MASK

#define U_GC_CC_MASK U_MASK(U_CONTROL_CHAR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 962 of file uchar.h.

## ◆ U_GC_CF_MASK

#define U_GC_CF_MASK U_MASK(U_FORMAT_CHAR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 964 of file uchar.h.

## ◆ U_GC_CN_MASK

#define U_GC_CN_MASK U_MASK(U_GENERAL_OTHER_TYPES)

U_GC_XX_MASK constants are bit flags corresponding to Unicode general category values.

For each category, the nth bit is set if the numeric value of the corresponding UCharCategory constant is n.

There are also some U_GC_Y_MASK constants for groups of general categories like L for all letter categories.

See also
  u_charType
  U_GET_GC_MASK
  UCharCategory

Stable
  ICU 2.1

Definition at line 927 of file uchar.h.

## ◆ U_GC_CO_MASK

#define U_GC_CO_MASK U_MASK(U_PRIVATE_USE_CHAR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 966 of file uchar.h.

## ◆ U_GC_CS_MASK

#define U_GC_CS_MASK U_MASK(U_SURROGATE)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 968 of file uchar.h.

## ◆ U_GC_L_MASK

#define U_GC_L_MASK (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK|U_GC_LM_MASK|U_GC_LO_MASK)

Mask constant for multiple UCharCategory bits (L Letters).

Stable
  ICU 2.1

Definition at line 997 of file uchar.h.

## ◆ U_GC_LC_MASK

#define U_GC_LC_MASK (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK)

Mask constant for multiple UCharCategory bits (LC Cased Letters).

Stable
  ICU 2.1

Definition at line 1001 of file uchar.h.

## ◆ U_GC_LL_MASK

#define U_GC_LL_MASK U_MASK(U_LOWERCASE_LETTER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 932 of file uchar.h.

## ◆ U_GC_LM_MASK

#define U_GC_LM_MASK U_MASK(U_MODIFIER_LETTER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 936 of file uchar.h.

## ◆ U_GC_LO_MASK

#define U_GC_LO_MASK U_MASK(U_OTHER_LETTER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 938 of file uchar.h.

## ◆ U_GC_LT_MASK

#define U_GC_LT_MASK U_MASK(U_TITLECASE_LETTER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 934 of file uchar.h.

## ◆ U_GC_LU_MASK

#define U_GC_LU_MASK U_MASK(U_UPPERCASE_LETTER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 930 of file uchar.h.

## ◆ U_GC_M_MASK

#define U_GC_M_MASK (U_GC_MN_MASK|U_GC_ME_MASK|U_GC_MC_MASK)

Mask constant for multiple UCharCategory bits (M Marks).

Stable
  ICU 2.1

Definition at line 1005 of file uchar.h.

## ◆ U_GC_MC_MASK

#define U_GC_MC_MASK U_MASK(U_COMBINING_SPACING_MARK)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 945 of file uchar.h.

## ◆ U_GC_ME_MASK

#define U_GC_ME_MASK U_MASK(U_ENCLOSING_MARK)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 943 of file uchar.h.

## ◆ U_GC_MN_MASK

#define U_GC_MN_MASK U_MASK(U_NON_SPACING_MARK)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 941 of file uchar.h.

## ◆ U_GC_N_MASK

#define U_GC_N_MASK (U_GC_ND_MASK|U_GC_NL_MASK|U_GC_NO_MASK)

Mask constant for multiple UCharCategory bits (N Numbers).

Stable
  ICU 2.1

Definition at line 1008 of file uchar.h.

## ◆ U_GC_ND_MASK

#define U_GC_ND_MASK U_MASK(U_DECIMAL_DIGIT_NUMBER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 948 of file uchar.h.

## ◆ U_GC_NL_MASK

#define U_GC_NL_MASK U_MASK(U_LETTER_NUMBER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 950 of file uchar.h.

## ◆ U_GC_NO_MASK

#define U_GC_NO_MASK U_MASK(U_OTHER_NUMBER)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 952 of file uchar.h.

## ◆ U_GC_P_MASK

#define U_GC_P_MASK

Value:
(U_GC_PD_MASK|U_GC_PS_MASK|U_GC_PE_MASK|U_GC_PC_MASK|U_GC_PO_MASK| \
U_GC_PI_MASK|U_GC_PF_MASK)
U_GC_PS_MASK
#define U_GC_PS_MASK
Mask constant for a UCharCategory.
Definition uchar.h:973
U_GC_PE_MASK
#define U_GC_PE_MASK
Mask constant for a UCharCategory.
Definition uchar.h:975
U_GC_PO_MASK
#define U_GC_PO_MASK
Mask constant for a UCharCategory.
Definition uchar.h:979
U_GC_PC_MASK
#define U_GC_PC_MASK
Mask constant for a UCharCategory.
Definition uchar.h:977
U_GC_PD_MASK
#define U_GC_PD_MASK
Mask constant for a UCharCategory.
Definition uchar.h:971
U_GC_PI_MASK
#define U_GC_PI_MASK
Mask constant for a UCharCategory.
Definition uchar.h:991
U_GC_PF_MASK
#define U_GC_PF_MASK
Mask constant for a UCharCategory.
Definition uchar.h:993

Mask constant for multiple UCharCategory bits (P Punctuation).

Stable
  ICU 2.1

Definition at line 1018 of file uchar.h.

## ◆ U_GC_PC_MASK

#define U_GC_PC_MASK U_MASK(U_CONNECTOR_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 977 of file uchar.h.

## ◆ U_GC_PD_MASK

#define U_GC_PD_MASK U_MASK(U_DASH_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 971 of file uchar.h.

## ◆ U_GC_PE_MASK

#define U_GC_PE_MASK U_MASK(U_END_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 975 of file uchar.h.

## ◆ U_GC_PF_MASK

#define U_GC_PF_MASK U_MASK(U_FINAL_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 993 of file uchar.h.

## ◆ U_GC_PI_MASK

#define U_GC_PI_MASK U_MASK(U_INITIAL_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 991 of file uchar.h.

## ◆ U_GC_PO_MASK

#define U_GC_PO_MASK U_MASK(U_OTHER_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 979 of file uchar.h.

## ◆ U_GC_PS_MASK

#define U_GC_PS_MASK U_MASK(U_START_PUNCTUATION)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 973 of file uchar.h.

## ◆ U_GC_S_MASK

#define U_GC_S_MASK (U_GC_SM_MASK|U_GC_SC_MASK|U_GC_SK_MASK|U_GC_SO_MASK)

Mask constant for multiple UCharCategory bits (S Symbols).

Stable
  ICU 2.1

Definition at line 1023 of file uchar.h.

## ◆ U_GC_SC_MASK

#define U_GC_SC_MASK U_MASK(U_CURRENCY_SYMBOL)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 984 of file uchar.h.

## ◆ U_GC_SK_MASK

#define U_GC_SK_MASK U_MASK(U_MODIFIER_SYMBOL)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 986 of file uchar.h.

## ◆ U_GC_SM_MASK

#define U_GC_SM_MASK U_MASK(U_MATH_SYMBOL)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 982 of file uchar.h.

## ◆ U_GC_SO_MASK

#define U_GC_SO_MASK U_MASK(U_OTHER_SYMBOL)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 988 of file uchar.h.

## ◆ U_GC_Z_MASK

#define U_GC_Z_MASK (U_GC_ZS_MASK|U_GC_ZL_MASK|U_GC_ZP_MASK)

Mask constant for multiple UCharCategory bits (Z Separators).

Stable
  ICU 2.1

Definition at line 1011 of file uchar.h.

## ◆ U_GC_ZL_MASK

#define U_GC_ZL_MASK U_MASK(U_LINE_SEPARATOR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 957 of file uchar.h.

## ◆ U_GC_ZP_MASK

#define U_GC_ZP_MASK U_MASK(U_PARAGRAPH_SEPARATOR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 959 of file uchar.h.

## ◆ U_GC_ZS_MASK

#define U_GC_ZS_MASK U_MASK(U_SPACE_SEPARATOR)

Mask constant for a UCharCategory.

Stable
  ICU 2.1

Definition at line 955 of file uchar.h.

## ◆ U_GET_GC_MASK

#define U_GET_GC_MASK | ( |  | c | ) |

Value:
U_MASK(u_charType(c))
U_MASK
#define U_MASK(x)
Get a single-bit bit set (a flag) from a bit number 0..31.
Definition uchar.h:174
u_charType
U_CAPI int8_t u_charType(UChar32 c)
Returns the general category value for the code point.

Get a single-bit bit set for the general category of a character.

This bit set can be compared bitwise with U_GC_SM_MASK, U_GC_L_MASK, etc. Same as U_MASK(u_charType(c)).

Parameters

  c | the code point to be tested

Returns
  a single-bit mask corresponding to the general category (UCharCategory) value

See also
  u_charType
  UCharCategory
  U_GC_CN_MASK

Stable
  ICU 2.1

Definition at line 3648 of file uchar.h.

## ◆ U_MASK

#define U_MASK | ( |  | x | ) |

Value:
((uint32_t)1<<(x))

Get a single-bit bit set (a flag) from a bit number 0..31.

Stable
  ICU 2.1

Definition at line 174 of file uchar.h.

## ◆ U_NO_NUMERIC_VALUE

#define U_NO_NUMERIC_VALUE ((double)-123456789.)

Special value that is returned by u_getNumericValue when no numeric value is defined for a code point.

See also
  u_getNumericValue

Stable
  ICU 2.2

Definition at line 3138 of file uchar.h.

## ◆ U_UNICODE_VERSION

#define U_UNICODE_VERSION "16.0"

Unicode version number, default for the current ICU version.

The actual Unicode Character Database (UCD) data is stored in uprops.icu and may be generated from UCD files from a different Unicode version. Call u_getUnicodeVersion to get the actual Unicode version of the data.

See also
  u_getUnicodeVersion

Stable
  ICU 2.0

Definition at line 64 of file uchar.h.

## ◆ UCHAR_MAX_VALUE

#define UCHAR_MAX_VALUE 0x10ffff

The highest Unicode code point value (scalar value) according to The Unicode Standard.

This is a 21-bit value (20.1 bits, rounded up). For a single character, UChar32 is a simple type that can hold any code point value.

See also
  UChar32

Stable
  ICU 2.0

Definition at line 168 of file uchar.h.

## ◆ UCHAR_MIN_VALUE

#define UCHAR_MIN_VALUE 0

Constants.

The lowest Unicode code point value. Code points are non-negative.

Stable
  ICU 2.0

Definition at line 158 of file uchar.h.

## Typedef Documentation

## ◆ UBidiPairedBracketType

typedef enum UBidiPairedBracketType UBidiPairedBracketType

Bidi Paired Bracket Type constants.

See also
  UCHAR_BIDI_PAIRED_BRACKET_TYPE

Stable
  ICU 52

## ◆ UBlockCode

typedef enum UBlockCode UBlockCode

Stable
  ICU 2.0

Definition at line 2005 of file uchar.h.

## ◆ UCharCategory

typedef enum UCharCategory UCharCategory

Data for enumerated Unicode general category types.

See http://www.unicode.org/Public/UNIDATA/UnicodeData.html .

Stable
  ICU 2.0

## ◆ UCharDirection

typedef enum UCharDirection UCharDirection

This specifies the language directional property of a character set.

Stable
  ICU 2.0

## ◆ UCharEnumTypeRange

typedef UBool UCharEnumTypeRange(const void *context, UChar32 start, UChar32 limit, UCharCategory type)

Callback from u_enumCharTypes(), is called for each contiguous range of code points c (where start<=c<limit) with the same Unicode general category ("character type").

The callback function can stop the enumeration by returning false.

Parameters

  context | an opaque pointer, as passed into utrie_enum()
  start | the first code point in a contiguous range with value
  limit | one past the last code point in a contiguous range with value
  type | the general category for all code points in [start..limit[

Returns
  false to stop the enumeration

Stable
  ICU 2.1

See also
  UCharCategory
  u_enumCharTypes

Definition at line 3668 of file uchar.h.

## ◆ UCharNameChoice

typedef enum UCharNameChoice UCharNameChoice

Selector constants for u_charName().

u_charName() returns the "modern" name of a Unicode character; or the name that was defined in Unicode version 1.0, before the Unicode standard merged with ISO-10646; or an "extended" name that gives each Unicode code point a unique name.

See also
  u_charName

Stable
  ICU 2.0

## ◆ UDecompositionType

typedef enum UDecompositionType UDecompositionType

Decomposition Type constants.

See also
  UCHAR_DECOMPOSITION_TYPE

Stable
  ICU 2.2

## ◆ UEastAsianWidth

typedef enum UEastAsianWidth UEastAsianWidth

East Asian Width constants.

See also
  UCHAR_EAST_ASIAN_WIDTH
  u_getIntPropertyValue

Stable
  ICU 2.2

## ◆ UEnumCharNamesFn

typedef UBool UEnumCharNamesFn(void *context, UChar32 code, UCharNameChoice nameChoice, const char *name, int32_t length)

Type of a callback function for u_enumCharNames() that gets called for each Unicode character with the code point value and the character name.

If such a function returns false, then the enumeration is stopped.

Parameters

  context | The context pointer that was passed to u_enumCharNames().
  code | The Unicode code point for the character with this name.
  nameChoice | Selector for which kind of names is enumerated.
  name | The character's name, zero-terminated.
  length | The length of the name.

Returns
  true if the enumeration should continue, false to stop it.

See also
  UCharNameChoice
  u_enumCharNames

Stable
  ICU 1.7

Definition at line 3848 of file uchar.h.

## ◆ UGraphemeClusterBreak

typedef enum UGraphemeClusterBreak UGraphemeClusterBreak

Grapheme Cluster Break constants.

See also
  UCHAR_GRAPHEME_CLUSTER_BREAK

Stable
  ICU 3.4

## ◆ UHangulSyllableType

typedef enum UHangulSyllableType UHangulSyllableType

Hangul Syllable Type constants.

See also
  UCHAR_HANGUL_SYLLABLE_TYPE

Stable
  ICU 2.6

## ◆ UIdentifierStatus

typedef enum UIdentifierStatus UIdentifierStatus

Identifier Status constants.

See https://www.unicode.org/reports/tr39/#Identifier_Status_and_Type.

See also
  UCHAR_IDENTIFIER_STATUS

Draft
  This API may be changed in the future versions and was introduced in ICU 75

## ◆ UIdentifierType

typedef enum UIdentifierType UIdentifierType

Identifier Type constants.

See https://www.unicode.org/reports/tr39/#Identifier_Status_and_Type.

See also
  UCHAR_IDENTIFIER_TYPE

Draft
  This API may be changed in the future versions and was introduced in ICU 75

## ◆ UIndicConjunctBreak

typedef enum UIndicConjunctBreak UIndicConjunctBreak

Indic Conjunct Break constants.

See also
  UCHAR_INDIC_CONJUNCT_BREAK

Draft
  This API may be changed in the future versions and was introduced in ICU 76

## ◆ UIndicPositionalCategory

typedef enum UIndicPositionalCategory UIndicPositionalCategory

Indic Positional Category constants.

See also
  UCHAR_INDIC_POSITIONAL_CATEGORY

Stable
  ICU 63

## ◆ UIndicSyllabicCategory

typedef enum UIndicSyllabicCategory UIndicSyllabicCategory

Indic Syllabic Category constants.

See also
  UCHAR_INDIC_SYLLABIC_CATEGORY

Stable
  ICU 63

## ◆ UJoiningGroup

typedef enum UJoiningGroup UJoiningGroup

Joining Group constants.

See also
  UCHAR_JOINING_GROUP

Stable
  ICU 2.2

## ◆ UJoiningType

typedef enum UJoiningType UJoiningType

Joining Type constants.

See also
  UCHAR_JOINING_TYPE

Stable
  ICU 2.2

## ◆ ULineBreak

typedef enum ULineBreak ULineBreak

Line Break constants.

See also
  UCHAR_LINE_BREAK

Stable
  ICU 2.2

## ◆ UNumericType

typedef enum UNumericType UNumericType

Numeric Type constants.

See also
  UCHAR_NUMERIC_TYPE

Stable
  ICU 2.2

## ◆ UProperty

typedef enum UProperty UProperty

Selection constants for Unicode properties.

These constants are used in functions like u_hasBinaryProperty to select one of the Unicode properties.

The properties APIs are intended to reflect Unicode properties as defined in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).

For details about the properties see UAX #44: Unicode Character Database (http://www.unicode.org/reports/tr44/).

Important: If ICU is built with UCD files from Unicode versions below, e.g., 3.2, then properties marked with "new in Unicode 3.2" are not or not fully available. Check u_getUnicodeVersion to be sure.

See also
  u_hasBinaryProperty
  u_getIntPropertyValue
  u_getUnicodeVersion

Stable
  ICU 2.1

## ◆ UPropertyNameChoice

typedef enum UPropertyNameChoice UPropertyNameChoice

Selector constants for u_getPropertyName() and u_getPropertyValueName().

These selectors are used to choose which name is returned for a given property or value. All properties and values have a long name. Most have a short name, but some do not. Unicode allows for additional names, beyond the long and short name, which would be indicated by U_LONG_PROPERTY_NAME + i, where i=1, 2,...

See also
  u_getPropertyName()
  u_getPropertyValueName()

Stable
  ICU 2.4

## ◆ USentenceBreak

typedef enum USentenceBreak USentenceBreak

Sentence Break constants.

See also
  UCHAR_SENTENCE_BREAK

Stable
  ICU 3.4

## ◆ UVerticalOrientation

typedef enum UVerticalOrientation UVerticalOrientation

Vertical Orientation constants.

See also
  UCHAR_VERTICAL_ORIENTATION

Stable
  ICU 63

## ◆ UWordBreakValues

typedef enum UWordBreakValues UWordBreakValues

Word Break constants.

(UWordBreak is a pre-existing enum type in ubrk.h for word break status tags.)

See also
  UCHAR_WORD_BREAK

Stable
  ICU 3.4

## Enumeration Type Documentation

## ◆ UBidiPairedBracketType

enum UBidiPairedBracketType

Bidi Paired Bracket Type constants.

See also
  UCHAR_BIDI_PAIRED_BRACKET_TYPE

Stable
  ICU 52

Enumerator
U_BPT_NONE | Not a paired bracket. Stable ICU 52
U_BPT_OPEN | Open paired bracket. Stable ICU 52
U_BPT_CLOSE | Close paired bracket. Stable ICU 52
U_BPT_COUNT | One more than the highest normal UBidiPairedBracketType value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_BIDI_PAIRED_BRACKET_TYPE). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 1100 of file uchar.h.

## ◆ UBlockCode

enum UBlockCode

Constants for Unicode blocks, see the Unicode Data file Blocks.txt.

Stable
  ICU 2.0

Enumerator
UBLOCK_NO_BLOCK | New No_Block value in Unicode 4. Stable ICU 2.6
UBLOCK_BASIC_LATIN | Stable ICU 2.0
UBLOCK_LATIN_1_SUPPLEMENT | Stable ICU 2.0
UBLOCK_LATIN_EXTENDED_A | Stable ICU 2.0
UBLOCK_LATIN_EXTENDED_B | Stable ICU 2.0
UBLOCK_IPA_EXTENSIONS | Stable ICU 2.0
UBLOCK_SPACING_MODIFIER_LETTERS | Stable ICU 2.0
UBLOCK_COMBINING_DIACRITICAL_MARKS | Stable ICU 2.0
UBLOCK_GREEK | Unicode 3.2 renames this block to "Greek and Coptic". Stable ICU 2.0
UBLOCK_CYRILLIC | Stable ICU 2.0
UBLOCK_ARMENIAN | Stable ICU 2.0
UBLOCK_HEBREW | Stable ICU 2.0
UBLOCK_ARABIC | Stable ICU 2.0
UBLOCK_SYRIAC | Stable ICU 2.0
UBLOCK_THAANA | Stable ICU 2.0
UBLOCK_DEVANAGARI | Stable ICU 2.0
UBLOCK_BENGALI | Stable ICU 2.0
UBLOCK_GURMUKHI | Stable ICU 2.0
UBLOCK_GUJARATI | Stable ICU 2.0
UBLOCK_ORIYA | Stable ICU 2.0
UBLOCK_TAMIL | Stable ICU 2.0
UBLOCK_TELUGU | Stable ICU 2.0
UBLOCK_KANNADA | Stable ICU 2.0
UBLOCK_MALAYALAM | Stable ICU 2.0
UBLOCK_SINHALA | Stable ICU 2.0
UBLOCK_THAI | Stable ICU 2.0
UBLOCK_LAO | Stable ICU 2.0
UBLOCK_TIBETAN | Stable ICU 2.0
UBLOCK_MYANMAR | Stable ICU 2.0
UBLOCK_GEORGIAN | Stable ICU 2.0
UBLOCK_HANGUL_JAMO | Stable ICU 2.0
UBLOCK_ETHIOPIC | Stable ICU 2.0
UBLOCK_CHEROKEE | Stable ICU 2.0
UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS | Stable ICU 2.0
UBLOCK_OGHAM | Stable ICU 2.0
UBLOCK_RUNIC | Stable ICU 2.0
UBLOCK_KHMER | Stable ICU 2.0
UBLOCK_MONGOLIAN | Stable ICU 2.0
UBLOCK_LATIN_EXTENDED_ADDITIONAL | Stable ICU 2.0
UBLOCK_GREEK_EXTENDED | Stable ICU 2.0
UBLOCK_GENERAL_PUNCTUATION | Stable ICU 2.0
UBLOCK_SUPERSCRIPTS_AND_SUBSCRIPTS | Stable ICU 2.0
UBLOCK_CURRENCY_SYMBOLS | Stable ICU 2.0
UBLOCK_COMBINING_MARKS_FOR_SYMBOLS | Unicode 3.2 renames this block to "Combining Diacritical Marks for Symbols". Stable ICU 2.0
UBLOCK_LETTERLIKE_SYMBOLS | Stable ICU 2.0
UBLOCK_NUMBER_FORMS | Stable ICU 2.0
UBLOCK_ARROWS | Stable ICU 2.0
UBLOCK_MATHEMATICAL_OPERATORS | Stable ICU 2.0
UBLOCK_MISCELLANEOUS_TECHNICAL | Stable ICU 2.0
UBLOCK_CONTROL_PICTURES | Stable ICU 2.0
UBLOCK_OPTICAL_CHARACTER_RECOGNITION | Stable ICU 2.0
UBLOCK_ENCLOSED_ALPHANUMERICS | Stable ICU 2.0
UBLOCK_BOX_DRAWING | Stable ICU 2.0
UBLOCK_BLOCK_ELEMENTS | Stable ICU 2.0
UBLOCK_GEOMETRIC_SHAPES | Stable ICU 2.0
UBLOCK_MISCELLANEOUS_SYMBOLS | Stable ICU 2.0
UBLOCK_DINGBATS | Stable ICU 2.0
UBLOCK_BRAILLE_PATTERNS | Stable ICU 2.0
UBLOCK_CJK_RADICALS_SUPPLEMENT | Stable ICU 2.0
UBLOCK_KANGXI_RADICALS | Stable ICU 2.0
UBLOCK_IDEOGRAPHIC_DESCRIPTION_CHARACTERS | Stable ICU 2.0
UBLOCK_CJK_SYMBOLS_AND_PUNCTUATION | Stable ICU 2.0
UBLOCK_HIRAGANA | Stable ICU 2.0
UBLOCK_KATAKANA | Stable ICU 2.0
UBLOCK_BOPOMOFO | Stable ICU 2.0
UBLOCK_HANGUL_COMPATIBILITY_JAMO | Stable ICU 2.0
UBLOCK_KANBUN | Stable ICU 2.0
UBLOCK_BOPOMOFO_EXTENDED | Stable ICU 2.0
UBLOCK_ENCLOSED_CJK_LETTERS_AND_MONTHS | Stable ICU 2.0
UBLOCK_CJK_COMPATIBILITY | Stable ICU 2.0
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A | Stable ICU 2.0
UBLOCK_CJK_UNIFIED_IDEOGRAPHS | Stable ICU 2.0
UBLOCK_YI_SYLLABLES | Stable ICU 2.0
UBLOCK_YI_RADICALS | Stable ICU 2.0
UBLOCK_HANGUL_SYLLABLES | Stable ICU 2.0
UBLOCK_HIGH_SURROGATES | Stable ICU 2.0
UBLOCK_HIGH_PRIVATE_USE_SURROGATES | Stable ICU 2.0
UBLOCK_LOW_SURROGATES | Stable ICU 2.0
UBLOCK_PRIVATE_USE_AREA | Same as UBLOCK_PRIVATE_USE. Until Unicode 3.1.1, the corresponding block name was "Private Use", and multiple code point ranges had this block. Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and adds separate blocks for the supplementary PUAs. Stable ICU 2.0
UBLOCK_PRIVATE_USE | Same as UBLOCK_PRIVATE_USE_AREA. Until Unicode 3.1.1, the corresponding block name was "Private Use", and multiple code point ranges had this block. Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and adds separate blocks for the supplementary PUAs. Stable ICU 2.0
UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS | Stable ICU 2.0
UBLOCK_ALPHABETIC_PRESENTATION_FORMS | Stable ICU 2.0
UBLOCK_ARABIC_PRESENTATION_FORMS_A | Stable ICU 2.0
UBLOCK_COMBINING_HALF_MARKS | Stable ICU 2.0
UBLOCK_CJK_COMPATIBILITY_FORMS | Stable ICU 2.0
UBLOCK_SMALL_FORM_VARIANTS | Stable ICU 2.0
UBLOCK_ARABIC_PRESENTATION_FORMS_B | Stable ICU 2.0
UBLOCK_SPECIALS | Stable ICU 2.0
UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS | Stable ICU 2.0
UBLOCK_OLD_ITALIC | Stable ICU 2.0
UBLOCK_GOTHIC | Stable ICU 2.0
UBLOCK_DESERET | Stable ICU 2.0
UBLOCK_BYZANTINE_MUSICAL_SYMBOLS | Stable ICU 2.0
UBLOCK_MUSICAL_SYMBOLS | Stable ICU 2.0
UBLOCK_MATHEMATICAL_ALPHANUMERIC_SYMBOLS | Stable ICU 2.0
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B | Stable ICU 2.0
UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT | Stable ICU 2.0
UBLOCK_TAGS | Stable ICU 2.0
UBLOCK_CYRILLIC_SUPPLEMENT | Stable ICU 3.0
UBLOCK_CYRILLIC_SUPPLEMENTARY | Unicode 4.0.1 renames the "Cyrillic Supplementary" block to "Cyrillic Supplement". Stable ICU 2.2
UBLOCK_TAGALOG | Stable ICU 2.2
UBLOCK_HANUNOO | Stable ICU 2.2
UBLOCK_BUHID | Stable ICU 2.2
UBLOCK_TAGBANWA | Stable ICU 2.2
UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A | Stable ICU 2.2
UBLOCK_SUPPLEMENTAL_ARROWS_A | Stable ICU 2.2
UBLOCK_SUPPLEMENTAL_ARROWS_B | Stable ICU 2.2
UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B | Stable ICU 2.2
UBLOCK_SUPPLEMENTAL_MATHEMATICAL_OPERATORS | Stable ICU 2.2
UBLOCK_KATAKANA_PHONETIC_EXTENSIONS | Stable ICU 2.2
UBLOCK_VARIATION_SELECTORS | Stable ICU 2.2
UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_A | Stable ICU 2.2
UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_B | Stable ICU 2.2
UBLOCK_LIMBU | Stable ICU 2.6
UBLOCK_TAI_LE | Stable ICU 2.6
UBLOCK_KHMER_SYMBOLS | Stable ICU 2.6
UBLOCK_PHONETIC_EXTENSIONS | Stable ICU 2.6
UBLOCK_MISCELLANEOUS_SYMBOLS_AND_ARROWS | Stable ICU 2.6
UBLOCK_YIJING_HEXAGRAM_SYMBOLS | Stable ICU 2.6
UBLOCK_LINEAR_B_SYLLABARY | Stable ICU 2.6
UBLOCK_LINEAR_B_IDEOGRAMS | Stable ICU 2.6
UBLOCK_AEGEAN_NUMBERS | Stable ICU 2.6
UBLOCK_UGARITIC | Stable ICU 2.6
UBLOCK_SHAVIAN | Stable ICU 2.6
UBLOCK_OSMANYA | Stable ICU 2.6
UBLOCK_CYPRIOT_SYLLABARY | Stable ICU 2.6
UBLOCK_TAI_XUAN_JING_SYMBOLS | Stable ICU 2.6
UBLOCK_VARIATION_SELECTORS_SUPPLEMENT | Stable ICU 2.6
UBLOCK_ANCIENT_GREEK_MUSICAL_NOTATION | Stable ICU 3.4
UBLOCK_ANCIENT_GREEK_NUMBERS | Stable ICU 3.4
UBLOCK_ARABIC_SUPPLEMENT | Stable ICU 3.4
UBLOCK_BUGINESE | Stable ICU 3.4
UBLOCK_CJK_STROKES | Stable ICU 3.4
UBLOCK_COMBINING_DIACRITICAL_MARKS_SUPPLEMENT | Stable ICU 3.4
UBLOCK_COPTIC | Stable ICU 3.4
UBLOCK_ETHIOPIC_EXTENDED | Stable ICU 3.4
UBLOCK_ETHIOPIC_SUPPLEMENT | Stable ICU 3.4
UBLOCK_GEORGIAN_SUPPLEMENT | Stable ICU 3.4
UBLOCK_GLAGOLITIC | Stable ICU 3.4
UBLOCK_KHAROSHTHI | Stable ICU 3.4
UBLOCK_MODIFIER_TONE_LETTERS | Stable ICU 3.4
UBLOCK_NEW_TAI_LUE | Stable ICU 3.4
UBLOCK_OLD_PERSIAN | Stable ICU 3.4
UBLOCK_PHONETIC_EXTENSIONS_SUPPLEMENT | Stable ICU 3.4
UBLOCK_SUPPLEMENTAL_PUNCTUATION | Stable ICU 3.4
UBLOCK_SYLOTI_NAGRI | Stable ICU 3.4
UBLOCK_TIFINAGH | Stable ICU 3.4
UBLOCK_VERTICAL_FORMS | Stable ICU 3.4
UBLOCK_NKO | Stable ICU 3.6
UBLOCK_BALINESE | Stable ICU 3.6
UBLOCK_LATIN_EXTENDED_C | Stable ICU 3.6
UBLOCK_LATIN_EXTENDED_D | Stable ICU 3.6
UBLOCK_PHAGS_PA | Stable ICU 3.6
UBLOCK_PHOENICIAN | Stable ICU 3.6
UBLOCK_CUNEIFORM | Stable ICU 3.6
UBLOCK_CUNEIFORM_NUMBERS_AND_PUNCTUATION | Stable ICU 3.6
UBLOCK_COUNTING_ROD_NUMERALS | Stable ICU 3.6
UBLOCK_SUNDANESE | Stable ICU 4.0
UBLOCK_LEPCHA | Stable ICU 4.0
UBLOCK_OL_CHIKI | Stable ICU 4.0
UBLOCK_CYRILLIC_EXTENDED_A | Stable ICU 4.0
UBLOCK_VAI | Stable ICU 4.0
UBLOCK_CYRILLIC_EXTENDED_B | Stable ICU 4.0
UBLOCK_SAURASHTRA | Stable ICU 4.0
UBLOCK_KAYAH_LI | Stable ICU 4.0
UBLOCK_REJANG | Stable ICU 4.0
UBLOCK_CHAM | Stable ICU 4.0
UBLOCK_ANCIENT_SYMBOLS | Stable ICU 4.0
UBLOCK_PHAISTOS_DISC | Stable ICU 4.0
UBLOCK_LYCIAN | Stable ICU 4.0
UBLOCK_CARIAN | Stable ICU 4.0
UBLOCK_LYDIAN | Stable ICU 4.0
UBLOCK_MAHJONG_TILES | Stable ICU 4.0
UBLOCK_DOMINO_TILES | Stable ICU 4.0
UBLOCK_SAMARITAN | Stable ICU 4.4
UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED | Stable ICU 4.4
UBLOCK_TAI_THAM | Stable ICU 4.4
UBLOCK_VEDIC_EXTENSIONS | Stable ICU 4.4
UBLOCK_LISU | Stable ICU 4.4
UBLOCK_BAMUM | Stable ICU 4.4
UBLOCK_COMMON_INDIC_NUMBER_FORMS | Stable ICU 4.4
UBLOCK_DEVANAGARI_EXTENDED | Stable ICU 4.4
UBLOCK_HANGUL_JAMO_EXTENDED_A | Stable ICU 4.4
UBLOCK_JAVANESE | Stable ICU 4.4
UBLOCK_MYANMAR_EXTENDED_A | Stable ICU 4.4
UBLOCK_TAI_VIET | Stable ICU 4.4
UBLOCK_MEETEI_MAYEK | Stable ICU 4.4
UBLOCK_HANGUL_JAMO_EXTENDED_B | Stable ICU 4.4
UBLOCK_IMPERIAL_ARAMAIC | Stable ICU 4.4
UBLOCK_OLD_SOUTH_ARABIAN | Stable ICU 4.4
UBLOCK_AVESTAN | Stable ICU 4.4
UBLOCK_INSCRIPTIONAL_PARTHIAN | Stable ICU 4.4
UBLOCK_INSCRIPTIONAL_PAHLAVI | Stable ICU 4.4
UBLOCK_OLD_TURKIC | Stable ICU 4.4
UBLOCK_RUMI_NUMERAL_SYMBOLS | Stable ICU 4.4
UBLOCK_KAITHI | Stable ICU 4.4
UBLOCK_EGYPTIAN_HIEROGLYPHS | Stable ICU 4.4
UBLOCK_ENCLOSED_ALPHANUMERIC_SUPPLEMENT | Stable ICU 4.4
UBLOCK_ENCLOSED_IDEOGRAPHIC_SUPPLEMENT | Stable ICU 4.4
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_C | Stable ICU 4.4
UBLOCK_MANDAIC | Stable ICU 4.6
UBLOCK_BATAK | Stable ICU 4.6
UBLOCK_ETHIOPIC_EXTENDED_A | Stable ICU 4.6
UBLOCK_BRAHMI | Stable ICU 4.6
UBLOCK_BAMUM_SUPPLEMENT | Stable ICU 4.6
UBLOCK_KANA_SUPPLEMENT | Stable ICU 4.6
UBLOCK_PLAYING_CARDS | Stable ICU 4.6
UBLOCK_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS | Stable ICU 4.6
UBLOCK_EMOTICONS | Stable ICU 4.6
UBLOCK_TRANSPORT_AND_MAP_SYMBOLS | Stable ICU 4.6
UBLOCK_ALCHEMICAL_SYMBOLS | Stable ICU 4.6
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_D | Stable ICU 4.6
UBLOCK_ARABIC_EXTENDED_A | Stable ICU 49
UBLOCK_ARABIC_MATHEMATICAL_ALPHABETIC_SYMBOLS | Stable ICU 49
UBLOCK_CHAKMA | Stable ICU 49
UBLOCK_MEETEI_MAYEK_EXTENSIONS | Stable ICU 49
UBLOCK_MEROITIC_CURSIVE | Stable ICU 49
UBLOCK_MEROITIC_HIEROGLYPHS | Stable ICU 49
UBLOCK_MIAO | Stable ICU 49
UBLOCK_SHARADA | Stable ICU 49
UBLOCK_SORA_SOMPENG | Stable ICU 49
UBLOCK_SUNDANESE_SUPPLEMENT | Stable ICU 49
UBLOCK_TAKRI | Stable ICU 49
UBLOCK_BASSA_VAH | Stable ICU 54
UBLOCK_CAUCASIAN_ALBANIAN | Stable ICU 54
UBLOCK_COPTIC_EPACT_NUMBERS | Stable ICU 54
UBLOCK_COMBINING_DIACRITICAL_MARKS_EXTENDED | Stable ICU 54
UBLOCK_DUPLOYAN | Stable ICU 54
UBLOCK_ELBASAN | Stable ICU 54
UBLOCK_GEOMETRIC_SHAPES_EXTENDED | Stable ICU 54
UBLOCK_GRANTHA | Stable ICU 54
UBLOCK_KHOJKI | Stable ICU 54
UBLOCK_KHUDAWADI | Stable ICU 54
UBLOCK_LATIN_EXTENDED_E | Stable ICU 54
UBLOCK_LINEAR_A | Stable ICU 54
UBLOCK_MAHAJANI | Stable ICU 54
UBLOCK_MANICHAEAN | Stable ICU 54
UBLOCK_MENDE_KIKAKUI | Stable ICU 54
UBLOCK_MODI | Stable ICU 54
UBLOCK_MRO | Stable ICU 54
UBLOCK_MYANMAR_EXTENDED_B | Stable ICU 54
UBLOCK_NABATAEAN | Stable ICU 54
UBLOCK_OLD_NORTH_ARABIAN | Stable ICU 54
UBLOCK_OLD_PERMIC | Stable ICU 54
UBLOCK_ORNAMENTAL_DINGBATS | Stable ICU 54
UBLOCK_PAHAWH_HMONG | Stable ICU 54
UBLOCK_PALMYRENE | Stable ICU 54
UBLOCK_PAU_CIN_HAU | Stable ICU 54
UBLOCK_PSALTER_PAHLAVI | Stable ICU 54
UBLOCK_SHORTHAND_FORMAT_CONTROLS | Stable ICU 54
UBLOCK_SIDDHAM | Stable ICU 54
UBLOCK_SINHALA_ARCHAIC_NUMBERS | Stable ICU 54
UBLOCK_SUPPLEMENTAL_ARROWS_C | Stable ICU 54
UBLOCK_TIRHUTA | Stable ICU 54
UBLOCK_WARANG_CITI | Stable ICU 54
UBLOCK_AHOM | Stable ICU 56
UBLOCK_ANATOLIAN_HIEROGLYPHS | Stable ICU 56
UBLOCK_CHEROKEE_SUPPLEMENT | Stable ICU 56
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_E | Stable ICU 56
UBLOCK_EARLY_DYNASTIC_CUNEIFORM | Stable ICU 56
UBLOCK_HATRAN | Stable ICU 56
UBLOCK_MULTANI | Stable ICU 56
UBLOCK_OLD_HUNGARIAN | Stable ICU 56
UBLOCK_SUPPLEMENTAL_SYMBOLS_AND_PICTOGRAPHS | Stable ICU 56
UBLOCK_SUTTON_SIGNWRITING | Stable ICU 56
UBLOCK_ADLAM | Stable ICU 58
UBLOCK_BHAIKSUKI | Stable ICU 58
UBLOCK_CYRILLIC_EXTENDED_C | Stable ICU 58
UBLOCK_GLAGOLITIC_SUPPLEMENT | Stable ICU 58
UBLOCK_IDEOGRAPHIC_SYMBOLS_AND_PUNCTUATION | Stable ICU 58
UBLOCK_MARCHEN | Stable ICU 58
UBLOCK_MONGOLIAN_SUPPLEMENT | Stable ICU 58
UBLOCK_NEWA | Stable ICU 58
UBLOCK_OSAGE | Stable ICU 58
UBLOCK_TANGUT | Stable ICU 58
UBLOCK_TANGUT_COMPONENTS | Stable ICU 58
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_F | Stable ICU 60
UBLOCK_KANA_EXTENDED_A | Stable ICU 60
UBLOCK_MASARAM_GONDI | Stable ICU 60
UBLOCK_NUSHU | Stable ICU 60
UBLOCK_SOYOMBO | Stable ICU 60
UBLOCK_SYRIAC_SUPPLEMENT | Stable ICU 60
UBLOCK_ZANABAZAR_SQUARE | Stable ICU 60
UBLOCK_CHESS_SYMBOLS | Stable ICU 62
UBLOCK_DOGRA | Stable ICU 62
UBLOCK_GEORGIAN_EXTENDED | Stable ICU 62
UBLOCK_GUNJALA_GONDI | Stable ICU 62
UBLOCK_HANIFI_ROHINGYA | Stable ICU 62
UBLOCK_INDIC_SIYAQ_NUMBERS | Stable ICU 62
UBLOCK_MAKASAR | Stable ICU 62
UBLOCK_MAYAN_NUMERALS | Stable ICU 62
UBLOCK_MEDEFAIDRIN | Stable ICU 62
UBLOCK_OLD_SOGDIAN | Stable ICU 62
UBLOCK_SOGDIAN | Stable ICU 62
UBLOCK_EGYPTIAN_HIEROGLYPH_FORMAT_CONTROLS | Stable ICU 64
UBLOCK_ELYMAIC | Stable ICU 64
UBLOCK_NANDINAGARI | Stable ICU 64
UBLOCK_NYIAKENG_PUACHUE_HMONG | Stable ICU 64
UBLOCK_OTTOMAN_SIYAQ_NUMBERS | Stable ICU 64
UBLOCK_SMALL_KANA_EXTENSION | Stable ICU 64
UBLOCK_SYMBOLS_AND_PICTOGRAPHS_EXTENDED_A | Stable ICU 64
UBLOCK_TAMIL_SUPPLEMENT | Stable ICU 64
UBLOCK_WANCHO | Stable ICU 64
UBLOCK_CHORASMIAN | Stable ICU 66
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_G | Stable ICU 66
UBLOCK_DIVES_AKURU | Stable ICU 66
UBLOCK_KHITAN_SMALL_SCRIPT | Stable ICU 66
UBLOCK_LISU_SUPPLEMENT | Stable ICU 66
UBLOCK_SYMBOLS_FOR_LEGACY_COMPUTING | Stable ICU 66
UBLOCK_TANGUT_SUPPLEMENT | Stable ICU 66
UBLOCK_YEZIDI | Stable ICU 66
UBLOCK_ARABIC_EXTENDED_B | Stable ICU 70
UBLOCK_CYPRO_MINOAN | Stable ICU 70
UBLOCK_ETHIOPIC_EXTENDED_B | Stable ICU 70
UBLOCK_KANA_EXTENDED_B | Stable ICU 70
UBLOCK_LATIN_EXTENDED_F | Stable ICU 70
UBLOCK_LATIN_EXTENDED_G | Stable ICU 70
UBLOCK_OLD_UYGHUR | Stable ICU 70
UBLOCK_TANGSA | Stable ICU 70
UBLOCK_TOTO | Stable ICU 70
UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED_A | Stable ICU 70
UBLOCK_VITHKUQI | Stable ICU 70
UBLOCK_ZNAMENNY_MUSICAL_NOTATION | Stable ICU 70
UBLOCK_ARABIC_EXTENDED_C | Stable ICU 72
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_H | Stable ICU 72
UBLOCK_CYRILLIC_EXTENDED_D | Stable ICU 72
UBLOCK_DEVANAGARI_EXTENDED_A | Stable ICU 72
UBLOCK_KAKTOVIK_NUMERALS | Stable ICU 72
UBLOCK_KAWI | Stable ICU 72
UBLOCK_NAG_MUNDARI | Stable ICU 72
UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_I | Stable ICU 74
UBLOCK_EGYPTIAN_HIEROGLYPHS_EXTENDED_A | Stable ICU 76
UBLOCK_GARAY | Stable ICU 76
UBLOCK_GURUNG_KHEMA | Stable ICU 76
UBLOCK_KIRAT_RAI | Stable ICU 76
UBLOCK_MYANMAR_EXTENDED_C | Stable ICU 76
UBLOCK_OL_ONAL | Stable ICU 76
UBLOCK_SUNUWAR | Stable ICU 76
UBLOCK_SYMBOLS_FOR_LEGACY_COMPUTING_SUPPLEMENT | Stable ICU 76
UBLOCK_TODHRI | Stable ICU 76
UBLOCK_TULU_TIGALARI | Stable ICU 76
UBLOCK_COUNT | One more than the highest normal UBlockCode value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_BLOCK). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UBLOCK_INVALID_CODE | Stable ICU 2.0

Definition at line 1128 of file uchar.h.

## ◆ UCharCategory

enum UCharCategory

Data for enumerated Unicode general category types.

See http://www.unicode.org/Public/UNIDATA/UnicodeData.html .

Stable
  ICU 2.0

Enumerator
U_UNASSIGNED | Non-category for unassigned and non-character code points. Stable ICU 2.0
U_GENERAL_OTHER_TYPES | Cn "Other, Not Assigned (no characters in [UnicodeData.txt] have this property)" (same as U_UNASSIGNED!) Stable ICU 2.0
U_UPPERCASE_LETTER | Lu. Stable ICU 2.0
U_LOWERCASE_LETTER | Ll. Stable ICU 2.0
U_TITLECASE_LETTER | Lt. Stable ICU 2.0
U_MODIFIER_LETTER | Lm. Stable ICU 2.0
U_OTHER_LETTER | Lo. Stable ICU 2.0
U_NON_SPACING_MARK | Mn. Stable ICU 2.0
U_ENCLOSING_MARK | Me. Stable ICU 2.0
U_COMBINING_SPACING_MARK | Mc. Stable ICU 2.0
U_DECIMAL_DIGIT_NUMBER | Nd. Stable ICU 2.0
U_LETTER_NUMBER | Nl. Stable ICU 2.0
U_OTHER_NUMBER | No. Stable ICU 2.0
U_SPACE_SEPARATOR | Zs. Stable ICU 2.0
U_LINE_SEPARATOR | Zl. Stable ICU 2.0
U_PARAGRAPH_SEPARATOR | Zp. Stable ICU 2.0
U_CONTROL_CHAR | Cc. Stable ICU 2.0
U_FORMAT_CHAR | Cf. Stable ICU 2.0
U_PRIVATE_USE_CHAR | Co. Stable ICU 2.0
U_SURROGATE | Cs. Stable ICU 2.0
U_DASH_PUNCTUATION | Pd. Stable ICU 2.0
U_START_PUNCTUATION | Ps. Stable ICU 2.0
U_END_PUNCTUATION | Pe. Stable ICU 2.0
U_CONNECTOR_PUNCTUATION | Pc. Stable ICU 2.0
U_OTHER_PUNCTUATION | Po. Stable ICU 2.0
U_MATH_SYMBOL | Sm. Stable ICU 2.0
U_CURRENCY_SYMBOL | Sc. Stable ICU 2.0
U_MODIFIER_SYMBOL | Sk. Stable ICU 2.0
U_OTHER_SYMBOL | So. Stable ICU 2.0
U_INITIAL_PUNCTUATION | Pi. Stable ICU 2.0
U_FINAL_PUNCTUATION | Pf. Stable ICU 2.0
U_CHAR_CATEGORY_COUNT | One higher than the last enum UCharCategory constant. This numeric value is stable (will not change), see http://www.unicode.org/policies/stability_policy.html#Property_Value Stable ICU 2.0

Definition at line 832 of file uchar.h.

## ◆ UCharDirection

enum UCharDirection

This specifies the language directional property of a character set.

Stable
  ICU 2.0

Enumerator
U_LEFT_TO_RIGHT | L. Stable ICU 2.0
U_RIGHT_TO_LEFT | R. Stable ICU 2.0
U_EUROPEAN_NUMBER | EN. Stable ICU 2.0
U_EUROPEAN_NUMBER_SEPARATOR | ES. Stable ICU 2.0
U_EUROPEAN_NUMBER_TERMINATOR | ET. Stable ICU 2.0
U_ARABIC_NUMBER | AN. Stable ICU 2.0
U_COMMON_NUMBER_SEPARATOR | CS. Stable ICU 2.0
U_BLOCK_SEPARATOR | B. Stable ICU 2.0
U_SEGMENT_SEPARATOR | S. Stable ICU 2.0
U_WHITE_SPACE_NEUTRAL | WS. Stable ICU 2.0
U_OTHER_NEUTRAL | ON. Stable ICU 2.0
U_LEFT_TO_RIGHT_EMBEDDING | LRE. Stable ICU 2.0
U_LEFT_TO_RIGHT_OVERRIDE | LRO. Stable ICU 2.0
U_RIGHT_TO_LEFT_ARABIC | AL. Stable ICU 2.0
U_RIGHT_TO_LEFT_EMBEDDING | RLE. Stable ICU 2.0
U_RIGHT_TO_LEFT_OVERRIDE | RLO. Stable ICU 2.0
U_POP_DIRECTIONAL_FORMAT | PDF. Stable ICU 2.0
U_DIR_NON_SPACING_MARK | NSM. Stable ICU 2.0
U_BOUNDARY_NEUTRAL | BN. Stable ICU 2.0
U_FIRST_STRONG_ISOLATE | FSI. Stable ICU 52
U_LEFT_TO_RIGHT_ISOLATE | LRI. Stable ICU 52
U_RIGHT_TO_LEFT_ISOLATE | RLI. Stable ICU 52
U_POP_DIRECTIONAL_ISOLATE | PDI. Stable ICU 52
U_CHAR_DIRECTION_COUNT | One more than the highest UCharDirection value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_BIDI_CLASS). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 1029 of file uchar.h.

## ◆ UCharNameChoice

enum UCharNameChoice

Selector constants for u_charName().

u_charName() returns the "modern" name of a Unicode character; or the name that was defined in Unicode version 1.0, before the Unicode standard merged with ISO-10646; or an "extended" name that gives each Unicode code point a unique name.

See also
  u_charName

Stable
  ICU 2.0

Enumerator
U_UNICODE_CHAR_NAME | Unicode character name (Name property). Stable ICU 2.0
U_UNICODE_10_CHAR_NAME | The Unicode_1_Name property value which is of little practical value. Beginning with ICU 49, ICU APIs return an empty string for this name choice. Deprecated ICU 49
U_EXTENDED_CHAR_NAME | Standard or synthetic character name. Stable ICU 2.0
U_CHAR_NAME_ALIAS | Corrected name from NameAliases.txt. Stable ICU 4.4
U_CHAR_NAME_CHOICE_COUNT | One more than the highest normal UCharNameChoice value. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2049 of file uchar.h.

## ◆ UDecompositionType

enum UDecompositionType

Decomposition Type constants.

See also
  UCHAR_DECOMPOSITION_TYPE

Stable
  ICU 2.2

Enumerator
U_DT_COUNT | One more than the highest normal UDecompositionType value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_DECOMPOSITION_TYPE). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2104 of file uchar.h.

## ◆ UEastAsianWidth

enum UEastAsianWidth

East Asian Width constants.

See also
  UCHAR_EAST_ASIAN_WIDTH
  u_getIntPropertyValue

Stable
  ICU 2.2

Enumerator
U_EA_COUNT | One more than the highest normal UEastAsianWidth value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_EAST_ASIAN_WIDTH). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2014 of file uchar.h.

## ◆ UGraphemeClusterBreak

enum UGraphemeClusterBreak

Grapheme Cluster Break constants.

See also
  UCHAR_GRAPHEME_CLUSTER_BREAK

Stable
  ICU 3.4

Enumerator
U_GCB_SPACING_MARK | Stable ICU 4.0
U_GCB_PREPEND | Stable ICU 4.0
U_GCB_REGIONAL_INDICATOR | Stable ICU 50
U_GCB_E_BASE | Stable ICU 58
U_GCB_E_BASE_GAZ | Stable ICU 58
U_GCB_E_MODIFIER | Stable ICU 58
U_GCB_GLUE_AFTER_ZWJ | Stable ICU 58
U_GCB_ZWJ | Stable ICU 58
U_GCB_COUNT | One more than the highest normal UGraphemeClusterBreak value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_GRAPHEME_CLUSTER_BREAK). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2311 of file uchar.h.

## ◆ UHangulSyllableType

enum UHangulSyllableType

Hangul Syllable Type constants.

See also
  UCHAR_HANGUL_SYLLABLE_TYPE

Stable
  ICU 2.6

Enumerator
U_HST_COUNT | One more than the highest normal UHangulSyllableType value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_HANGUL_SYLLABLE_TYPE). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2586 of file uchar.h.

## ◆ UIdentifierStatus

enum UIdentifierStatus

Identifier Status constants.

See https://www.unicode.org/reports/tr39/#Identifier_Status_and_Type.

See also
  UCHAR_IDENTIFIER_STATUS

Draft
  This API may be changed in the future versions and was introduced in ICU 75

Enumerator
U_ID_STATUS_RESTRICTED | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_STATUS_ALLOWED | Draft This API may be changed in the future versions and was introduced in ICU 75

Definition at line 2802 of file uchar.h.

## ◆ UIdentifierType

enum UIdentifierType

Identifier Type constants.

See https://www.unicode.org/reports/tr39/#Identifier_Status_and_Type.

See also
  UCHAR_IDENTIFIER_TYPE

Draft
  This API may be changed in the future versions and was introduced in ICU 75

Enumerator
U_ID_TYPE_NOT_CHARACTER | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_DEPRECATED | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_DEFAULT_IGNORABLE | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_NOT_NFKC | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_NOT_XID | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_EXCLUSION | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_OBSOLETE | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_TECHNICAL | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_UNCOMMON_USE | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_LIMITED_USE | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_INCLUSION | Draft This API may be changed in the future versions and was introduced in ICU 75
U_ID_TYPE_RECOMMENDED | Draft This API may be changed in the future versions and was introduced in ICU 75

Definition at line 2822 of file uchar.h.

## ◆ UIndicConjunctBreak

enum UIndicConjunctBreak

Indic Conjunct Break constants.

See also
  UCHAR_INDIC_CONJUNCT_BREAK

Draft
  This API may be changed in the future versions and was introduced in ICU 76

Enumerator
U_INCB_NONE | Draft This API may be changed in the future versions and was introduced in ICU 76
U_INCB_CONSONANT | Draft This API may be changed in the future versions and was introduced in ICU 76
U_INCB_EXTEND | Draft This API may be changed in the future versions and was introduced in ICU 76
U_INCB_LINKER | Draft This API may be changed in the future versions and was introduced in ICU 76

Definition at line 2753 of file uchar.h.

## ◆ UIndicPositionalCategory

enum UIndicPositionalCategory

Indic Positional Category constants.

See also
  UCHAR_INDIC_POSITIONAL_CATEGORY

Stable
  ICU 63

Enumerator
U_INPC_NA | Stable ICU 63
U_INPC_BOTTOM | Stable ICU 63
U_INPC_BOTTOM_AND_LEFT | Stable ICU 63
U_INPC_BOTTOM_AND_RIGHT | Stable ICU 63
U_INPC_LEFT | Stable ICU 63
U_INPC_LEFT_AND_RIGHT | Stable ICU 63
U_INPC_OVERSTRUCK | Stable ICU 63
U_INPC_RIGHT | Stable ICU 63
U_INPC_TOP | Stable ICU 63
U_INPC_TOP_AND_BOTTOM | Stable ICU 63
U_INPC_TOP_AND_BOTTOM_AND_RIGHT | Stable ICU 63
U_INPC_TOP_AND_LEFT | Stable ICU 63
U_INPC_TOP_AND_LEFT_AND_RIGHT | Stable ICU 63
U_INPC_TOP_AND_RIGHT | Stable ICU 63
U_INPC_VISUAL_ORDER_LEFT | Stable ICU 63
U_INPC_TOP_AND_BOTTOM_AND_LEFT | Stable ICU 66

Definition at line 2616 of file uchar.h.

## ◆ UIndicSyllabicCategory

enum UIndicSyllabicCategory

Indic Syllabic Category constants.

See also
  UCHAR_INDIC_SYLLABIC_CATEGORY

Stable
  ICU 63

Enumerator
U_INSC_OTHER | Stable ICU 63
U_INSC_AVAGRAHA | Stable ICU 63
U_INSC_BINDU | Stable ICU 63
U_INSC_BRAHMI_JOINING_NUMBER | Stable ICU 63
U_INSC_CANTILLATION_MARK | Stable ICU 63
U_INSC_CONSONANT | Stable ICU 63
U_INSC_CONSONANT_DEAD | Stable ICU 63
U_INSC_CONSONANT_FINAL | Stable ICU 63
U_INSC_CONSONANT_HEAD_LETTER | Stable ICU 63
U_INSC_CONSONANT_INITIAL_POSTFIXED | Stable ICU 63
U_INSC_CONSONANT_KILLER | Stable ICU 63
U_INSC_CONSONANT_MEDIAL | Stable ICU 63
U_INSC_CONSONANT_PLACEHOLDER | Stable ICU 63
U_INSC_CONSONANT_PRECEDING_REPHA | Stable ICU 63
U_INSC_CONSONANT_PREFIXED | Stable ICU 63
U_INSC_CONSONANT_SUBJOINED | Stable ICU 63
U_INSC_CONSONANT_SUCCEEDING_REPHA | Stable ICU 63
U_INSC_CONSONANT_WITH_STACKER | Stable ICU 63
U_INSC_GEMINATION_MARK | Stable ICU 63
U_INSC_INVISIBLE_STACKER | Stable ICU 63
U_INSC_JOINER | Stable ICU 63
U_INSC_MODIFYING_LETTER | Stable ICU 63
U_INSC_NON_JOINER | Stable ICU 63
U_INSC_NUKTA | Stable ICU 63
U_INSC_NUMBER | Stable ICU 63
U_INSC_NUMBER_JOINER | Stable ICU 63
U_INSC_PURE_KILLER | Stable ICU 63
U_INSC_REGISTER_SHIFTER | Stable ICU 63
U_INSC_SYLLABLE_MODIFIER | Stable ICU 63
U_INSC_TONE_LETTER | Stable ICU 63
U_INSC_TONE_MARK | Stable ICU 63
U_INSC_VIRAMA | Stable ICU 63
U_INSC_VISARGA | Stable ICU 63
U_INSC_VOWEL | Stable ICU 63
U_INSC_VOWEL_DEPENDENT | Stable ICU 63
U_INSC_VOWEL_INDEPENDENT | Stable ICU 63
U_INSC_REORDERING_KILLER | Stable ICU 76

Definition at line 2663 of file uchar.h.

## ◆ UJoiningGroup

enum UJoiningGroup

Joining Group constants.

See also
  UCHAR_JOINING_GROUP

Stable
  ICU 2.2

Enumerator
U_JG_TEH_MARBUTA_GOAL | Stable ICU 4.6
U_JG_FE | Stable ICU 2.6
U_JG_KHAPH | Stable ICU 2.6
U_JG_ZHAIN | Stable ICU 2.6
U_JG_BURUSHASKI_YEH_BARREE | Stable ICU 4.0
U_JG_FARSI_YEH | Stable ICU 4.4
U_JG_NYA | Stable ICU 4.4
U_JG_ROHINGYA_YEH | Stable ICU 49
U_JG_MANICHAEAN_ALEPH | Stable ICU 54
U_JG_MANICHAEAN_AYIN | Stable ICU 54
U_JG_MANICHAEAN_BETH | Stable ICU 54
U_JG_MANICHAEAN_DALETH | Stable ICU 54
U_JG_MANICHAEAN_DHAMEDH | Stable ICU 54
U_JG_MANICHAEAN_FIVE | Stable ICU 54
U_JG_MANICHAEAN_GIMEL | Stable ICU 54
U_JG_MANICHAEAN_HETH | Stable ICU 54
U_JG_MANICHAEAN_HUNDRED | Stable ICU 54
U_JG_MANICHAEAN_KAPH | Stable ICU 54
U_JG_MANICHAEAN_LAMEDH | Stable ICU 54
U_JG_MANICHAEAN_MEM | Stable ICU 54
U_JG_MANICHAEAN_NUN | Stable ICU 54
U_JG_MANICHAEAN_ONE | Stable ICU 54
U_JG_MANICHAEAN_PE | Stable ICU 54
U_JG_MANICHAEAN_QOPH | Stable ICU 54
U_JG_MANICHAEAN_RESH | Stable ICU 54
U_JG_MANICHAEAN_SADHE | Stable ICU 54
U_JG_MANICHAEAN_SAMEKH | Stable ICU 54
U_JG_MANICHAEAN_TAW | Stable ICU 54
U_JG_MANICHAEAN_TEN | Stable ICU 54
U_JG_MANICHAEAN_TETH | Stable ICU 54
U_JG_MANICHAEAN_THAMEDH | Stable ICU 54
U_JG_MANICHAEAN_TWENTY | Stable ICU 54
U_JG_MANICHAEAN_WAW | Stable ICU 54
U_JG_MANICHAEAN_YODH | Stable ICU 54
U_JG_MANICHAEAN_ZAYIN | Stable ICU 54
U_JG_STRAIGHT_WAW | Stable ICU 54
U_JG_AFRICAN_FEH | Stable ICU 58
U_JG_AFRICAN_NOON | Stable ICU 58
U_JG_AFRICAN_QAF | Stable ICU 58
U_JG_MALAYALAM_BHA | Stable ICU 60
U_JG_MALAYALAM_JA | Stable ICU 60
U_JG_MALAYALAM_LLA | Stable ICU 60
U_JG_MALAYALAM_LLLA | Stable ICU 60
U_JG_MALAYALAM_NGA | Stable ICU 60
U_JG_MALAYALAM_NNA | Stable ICU 60
U_JG_MALAYALAM_NNNA | Stable ICU 60
U_JG_MALAYALAM_NYA | Stable ICU 60
U_JG_MALAYALAM_RA | Stable ICU 60
U_JG_MALAYALAM_SSA | Stable ICU 60
U_JG_MALAYALAM_TTA | Stable ICU 60
U_JG_HANIFI_ROHINGYA_KINNA_YA | Stable ICU 62
U_JG_HANIFI_ROHINGYA_PA | Stable ICU 62
U_JG_THIN_YEH | Stable ICU 70
U_JG_VERTICAL_TAIL | Stable ICU 70
U_JG_KASHMIRI_YEH | Stable ICU 76
U_JG_COUNT | One more than the highest normal UJoiningGroup value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_JOINING_GROUP). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2176 of file uchar.h.

## ◆ UJoiningType

enum UJoiningType

Joining Type constants.

See also
  UCHAR_JOINING_TYPE

Stable
  ICU 2.2

Enumerator
U_JT_COUNT | One more than the highest normal UJoiningType value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_JOINING_TYPE). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2146 of file uchar.h.

## ◆ ULineBreak

enum ULineBreak

Line Break constants.

See also
  UCHAR_LINE_BREAK

Stable
  ICU 2.2

Enumerator
U_LB_INSEPARABLE | Renamed from the misspelled "inseperable" in Unicode 4.0.1/ICU 3.0. Stable ICU 3.0
U_LB_NEXT_LINE | Stable ICU 2.6
U_LB_WORD_JOINER | Stable ICU 2.6
U_LB_H2 | Stable ICU 3.4
U_LB_H3 | Stable ICU 3.4
U_LB_JL | Stable ICU 3.4
U_LB_JT | Stable ICU 3.4
U_LB_JV | Stable ICU 3.4
U_LB_CLOSE_PARENTHESIS | Stable ICU 4.4
U_LB_CONDITIONAL_JAPANESE_STARTER | Stable ICU 49
U_LB_HEBREW_LETTER | Stable ICU 49
U_LB_REGIONAL_INDICATOR | Stable ICU 50
U_LB_E_BASE | Stable ICU 58
U_LB_E_MODIFIER | Stable ICU 58
U_LB_ZWJ | Stable ICU 58
U_LB_AKSARA | Stable ICU 74
U_LB_AKSARA_PREBASE | Stable ICU 74
U_LB_AKSARA_START | Stable ICU 74
U_LB_VIRAMA_FINAL | Stable ICU 74
U_LB_VIRAMA | Stable ICU 74
U_LB_COUNT | One more than the highest normal ULineBreak value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_LINE_BREAK). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2465 of file uchar.h.

## ◆ UNumericType

enum UNumericType

Numeric Type constants.

See also
  UCHAR_NUMERIC_TYPE

Stable
  ICU 2.2

Enumerator
U_NT_COUNT | One more than the highest normal UNumericType value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_NUMERIC_TYPE). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2558 of file uchar.h.

## ◆ UProperty

enum UProperty

Selection constants for Unicode properties.

These constants are used in functions like u_hasBinaryProperty to select one of the Unicode properties.

The properties APIs are intended to reflect Unicode properties as defined in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).

For details about the properties see UAX #44: Unicode Character Database (http://www.unicode.org/reports/tr44/).

Important: If ICU is built with UCD files from Unicode versions below, e.g., 3.2, then properties marked with "new in Unicode 3.2" are not or not fully available. Check u_getUnicodeVersion to be sure.

See also
  u_hasBinaryProperty
  u_getIntPropertyValue
  u_getUnicodeVersion

Stable
  ICU 2.1

Enumerator
UCHAR_ALPHABETIC | Binary property Alphabetic. Same as u_isUAlphabetic, different from u_isalpha. Lu+Ll+Lt+Lm+Lo+Nl+Other_Alphabetic Stable ICU 2.1
UCHAR_BINARY_START | First constant for binary Unicode properties. Stable ICU 2.1
UCHAR_ASCII_HEX_DIGIT | Binary property ASCII_Hex_Digit. 0-9 A-F a-f Stable ICU 2.1
UCHAR_BIDI_CONTROL | Binary property Bidi_Control. Format controls which have specific functions in the Bidi Algorithm. Stable ICU 2.1
UCHAR_BIDI_MIRRORED | Binary property Bidi_Mirrored. Characters that may change display in RTL text. Same as u_isMirrored. See Bidi Algorithm, UTR 9. Stable ICU 2.1
UCHAR_DASH | Binary property Dash. Variations of dashes. Stable ICU 2.1
UCHAR_DEFAULT_IGNORABLE_CODE_POINT | Binary property Default_Ignorable_Code_Point (new in Unicode 3.2). Ignorable in most processing. <2060..206F, FFF0..FFFB, E0000..E0FFF>+Other_Default_Ignorable_Code_Point+(Cf+Cc+Cs-White_Space) Stable ICU 2.1
UCHAR_DEPRECATED | Binary property Deprecated (new in Unicode 3.2). The usage of deprecated characters is strongly discouraged. Stable ICU 2.1
UCHAR_DIACRITIC | Binary property Diacritic. Characters that linguistically modify the meaning of another character to which they apply. Stable ICU 2.1
UCHAR_EXTENDER | Binary property Extender. Extend the value or shape of a preceding alphabetic character, e.g., length and iteration marks. Stable ICU 2.1
UCHAR_FULL_COMPOSITION_EXCLUSION | Binary property Full_Composition_Exclusion. CompositionExclusions.txt+Singleton Decompositions+ Non-Starter Decompositions. Stable ICU 2.1
UCHAR_GRAPHEME_BASE | Binary property Grapheme_Base (new in Unicode 3.2). For programmatic determination of grapheme cluster boundaries. [0..10FFFF]-Cc-Cf-Cs-Co-Cn-Zl-Zp-Grapheme_Link-Grapheme_Extend-CGJ Stable ICU 2.1
UCHAR_GRAPHEME_EXTEND | Binary property Grapheme_Extend (new in Unicode 3.2). For programmatic determination of grapheme cluster boundaries. Me+Mn+Mc+Other_Grapheme_Extend-Grapheme_Link-CGJ Stable ICU 2.1
UCHAR_GRAPHEME_LINK | Binary property Grapheme_Link (new in Unicode 3.2). For programmatic determination of grapheme cluster boundaries. Stable ICU 2.1
UCHAR_HEX_DIGIT | Binary property Hex_Digit. Characters commonly used for hexadecimal numbers. Stable ICU 2.1
UCHAR_HYPHEN | Binary property Hyphen. Dashes used to mark connections between pieces of words, plus the Katakana middle dot. Stable ICU 2.1
UCHAR_ID_CONTINUE | Binary property ID_Continue. Characters that can continue an identifier. DerivedCoreProperties.txt also says "NOTE: Cf characters should be filtered out." ID_Start+Mn+Mc+Nd+Pc Stable ICU 2.1
UCHAR_ID_START | Binary property ID_Start. Characters that can start an identifier. Lu+Ll+Lt+Lm+Lo+Nl Stable ICU 2.1
UCHAR_IDEOGRAPHIC | Binary property Ideographic. CJKV ideographs. Stable ICU 2.1
UCHAR_IDS_BINARY_OPERATOR | Binary property IDS_Binary_Operator (new in Unicode 3.2). For programmatic determination of Ideographic Description Sequences. Stable ICU 2.1
UCHAR_IDS_TRINARY_OPERATOR | Binary property IDS_Trinary_Operator (new in Unicode 3.2). For programmatic determination of Ideographic Description Sequences. Stable ICU 2.1
UCHAR_JOIN_CONTROL | Binary property Join_Control. Format controls for cursive joining and ligation. Stable ICU 2.1
UCHAR_LOGICAL_ORDER_EXCEPTION | Binary property Logical_Order_Exception (new in Unicode 3.2). Characters that do not use logical order and require special handling in most processing. Stable ICU 2.1
UCHAR_LOWERCASE | Binary property Lowercase. Same as u_isULowercase, different from u_islower. Ll+Other_Lowercase Stable ICU 2.1
UCHAR_MATH | Binary property Math. Sm+Other_Math Stable ICU 2.1
UCHAR_NONCHARACTER_CODE_POINT | Binary property Noncharacter_Code_Point. Code points that are explicitly defined as illegal for the encoding of characters. Stable ICU 2.1
UCHAR_QUOTATION_MARK | Binary property Quotation_Mark. Stable ICU 2.1
UCHAR_RADICAL | Binary property Radical (new in Unicode 3.2). For programmatic determination of Ideographic Description Sequences. Stable ICU 2.1
UCHAR_SOFT_DOTTED | Binary property Soft_Dotted (new in Unicode 3.2). Characters with a "soft dot", like i or j. An accent placed on these characters causes the dot to disappear. Stable ICU 2.1
UCHAR_TERMINAL_PUNCTUATION | Binary property Terminal_Punctuation. Punctuation characters that generally mark the end of textual units. Stable ICU 2.1
UCHAR_UNIFIED_IDEOGRAPH | Binary property Unified_Ideograph (new in Unicode 3.2). For programmatic determination of Ideographic Description Sequences. Stable ICU 2.1
UCHAR_UPPERCASE | Binary property Uppercase. Same as u_isUUppercase, different from u_isupper. Lu+Other_Uppercase Stable ICU 2.1
UCHAR_WHITE_SPACE | Binary property White_Space. Same as u_isUWhiteSpace, different from u_isspace and u_isWhitespace. Space characters+TAB+CR+LF-ZWSP-ZWNBSP Stable ICU 2.1
UCHAR_XID_CONTINUE | Binary property XID_Continue. ID_Continue modified to allow closure under normalization forms NFKC and NFKD. Stable ICU 2.1
UCHAR_XID_START | Binary property XID_Start. ID_Start modified to allow closure under normalization forms NFKC and NFKD. Stable ICU 2.1
UCHAR_CASE_SENSITIVE | Binary property Case_Sensitive. Either the source of a case mapping or in the target of a case mapping. Not the same as the general category Cased_Letter. Stable ICU 2.6
UCHAR_S_TERM | Binary property STerm (new in Unicode 4.0.1). Sentence Terminal. Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Stable ICU 3.0
UCHAR_VARIATION_SELECTOR | Binary property Variation_Selector (new in Unicode 4.0.1). Indicates all those characters that qualify as Variation Selectors. For details on the behavior of these characters, see StandardizedVariants.html and 15.6 Variation Selectors. Stable ICU 3.0
UCHAR_NFD_INERT | Binary property NFD_Inert. ICU-specific property for characters that are inert under NFD, i.e., they do not interact with adjacent characters. See the documentation for the Normalizer2 class and the Normalizer2::isInert() method. Stable ICU 3.0
UCHAR_NFKD_INERT | Binary property NFKD_Inert. ICU-specific property for characters that are inert under NFKD, i.e., they do not interact with adjacent characters. See the documentation for the Normalizer2 class and the Normalizer2::isInert() method. Stable ICU 3.0
UCHAR_NFC_INERT | Binary property NFC_Inert. ICU-specific property for characters that are inert under NFC, i.e., they do not interact with adjacent characters. See the documentation for the Normalizer2 class and the Normalizer2::isInert() method. Stable ICU 3.0
UCHAR_NFKC_INERT | Binary property NFKC_Inert. ICU-specific property for characters that are inert under NFKC, i.e., they do not interact with adjacent characters. See the documentation for the Normalizer2 class and the Normalizer2::isInert() method. Stable ICU 3.0
UCHAR_SEGMENT_STARTER | Binary Property Segment_Starter. ICU-specific property for characters that are starters in terms of Unicode normalization and combining character sequences. They have ccc=0 and do not occur in non-initial position of the canonical decomposition of any character (like a-umlaut in NFD and a Jamo T in an NFD(Hangul LVT)). ICU uses this property for segmenting a string for generating a set of canonically equivalent strings, e.g. for canonical closure while processing collation tailoring rules. Stable ICU 3.0
UCHAR_PATTERN_SYNTAX | Binary property Pattern_Syntax (new in Unicode 4.1). See UAX #31 Identifier and Pattern Syntax (http://www.unicode.org/reports/tr31/) Stable ICU 3.4
UCHAR_PATTERN_WHITE_SPACE | Binary property Pattern_White_Space (new in Unicode 4.1). See UAX #31 Identifier and Pattern Syntax (http://www.unicode.org/reports/tr31/) Stable ICU 3.4
UCHAR_POSIX_ALNUM | Binary property alnum (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the uchar.h file documentation. Stable ICU 3.4
UCHAR_POSIX_BLANK | Binary property blank (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the uchar.h file documentation. Stable ICU 3.4
UCHAR_POSIX_GRAPH | Binary property graph (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the uchar.h file documentation. Stable ICU 3.4
UCHAR_POSIX_PRINT | Binary property print (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the uchar.h file documentation. Stable ICU 3.4
UCHAR_POSIX_XDIGIT | Binary property xdigit (a C/POSIX character class). Implemented according to the UTS #18 Annex C Standard Recommendation. See the uchar.h file documentation. Stable ICU 3.4
UCHAR_CASED | Binary property Cased. For Lowercase, Uppercase and Titlecase characters. Stable ICU 4.4
UCHAR_CASE_IGNORABLE | Binary property Case_Ignorable. Used in context-sensitive case mappings. Stable ICU 4.4
UCHAR_CHANGES_WHEN_LOWERCASED | Binary property Changes_When_Lowercased. Stable ICU 4.4
UCHAR_CHANGES_WHEN_UPPERCASED | Binary property Changes_When_Uppercased. Stable ICU 4.4
UCHAR_CHANGES_WHEN_TITLECASED | Binary property Changes_When_Titlecased. Stable ICU 4.4
UCHAR_CHANGES_WHEN_CASEFOLDED | Binary property Changes_When_Casefolded. Stable ICU 4.4
UCHAR_CHANGES_WHEN_CASEMAPPED | Binary property Changes_When_Casemapped. Stable ICU 4.4
UCHAR_CHANGES_WHEN_NFKC_CASEFOLDED | Binary property Changes_When_NFKC_Casefolded. Stable ICU 4.4
UCHAR_EMOJI | Binary property Emoji. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 57
UCHAR_EMOJI_PRESENTATION | Binary property Emoji_Presentation. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 57
UCHAR_EMOJI_MODIFIER | Binary property Emoji_Modifier. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 57
UCHAR_EMOJI_MODIFIER_BASE | Binary property Emoji_Modifier_Base. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 57
UCHAR_EMOJI_COMPONENT | Binary property Emoji_Component. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 60
UCHAR_REGIONAL_INDICATOR | Binary property Regional_Indicator. Stable ICU 60
UCHAR_PREPENDED_CONCATENATION_MARK | Binary property Prepended_Concatenation_Mark. Stable ICU 60
UCHAR_EXTENDED_PICTOGRAPHIC | Binary property Extended_Pictographic. See http://www.unicode.org/reports/tr51/#Emoji_Properties Stable ICU 62
UCHAR_BASIC_EMOJI | Binary property of strings Basic_Emoji. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_EMOJI_KEYCAP_SEQUENCE | Binary property of strings Emoji_Keycap_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_RGI_EMOJI_MODIFIER_SEQUENCE | Binary property of strings RGI_Emoji_Modifier_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_RGI_EMOJI_FLAG_SEQUENCE | Binary property of strings RGI_Emoji_Flag_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_RGI_EMOJI_TAG_SEQUENCE | Binary property of strings RGI_Emoji_Tag_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_RGI_EMOJI_ZWJ_SEQUENCE | Binary property of strings RGI_Emoji_ZWJ_Sequence. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_RGI_EMOJI | Binary property of strings RGI_Emoji. See https://www.unicode.org/reports/tr51/#Emoji_Sets Stable ICU 70
UCHAR_IDS_UNARY_OPERATOR | Binary property IDS_Unary_Operator. For programmatic determination of Ideographic Description Sequences. Stable ICU 74
UCHAR_ID_COMPAT_MATH_START | Binary property ID_Compat_Math_Start. Used in mathematical identifier profile in UAX #31. Stable ICU 74
UCHAR_ID_COMPAT_MATH_CONTINUE | Binary property ID_Compat_Math_Continue. Used in mathematical identifier profile in UAX #31. Stable ICU 74
UCHAR_MODIFIER_COMBINING_MARK | Binary property Modifier_Combining_Mark. Used by the AMTRA algorithm in UAX #53. Draft This API may be changed in the future versions and was introduced in ICU 76
UCHAR_BINARY_LIMIT | One more than the last constant for binary Unicode properties. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_BIDI_CLASS | Enumerated property Bidi_Class. Same as u_charDirection, returns UCharDirection values. Stable ICU 2.2
UCHAR_INT_START | First constant for enumerated/integer Unicode properties. Stable ICU 2.2
UCHAR_BLOCK | Enumerated property Block. Same as ublock_getCode, returns UBlockCode values. Stable ICU 2.2
UCHAR_CANONICAL_COMBINING_CLASS | Enumerated property Canonical_Combining_Class. Same as u_getCombiningClass, returns 8-bit numeric values. Stable ICU 2.2
UCHAR_DECOMPOSITION_TYPE | Enumerated property Decomposition_Type. Returns UDecompositionType values. Stable ICU 2.2
UCHAR_EAST_ASIAN_WIDTH | Enumerated property East_Asian_Width. See http://www.unicode.org/reports/tr11/ Returns UEastAsianWidth values. Stable ICU 2.2
UCHAR_GENERAL_CATEGORY | Enumerated property General_Category. Same as u_charType, returns UCharCategory values. Stable ICU 2.2
UCHAR_JOINING_GROUP | Enumerated property Joining_Group. Returns UJoiningGroup values. Stable ICU 2.2
UCHAR_JOINING_TYPE | Enumerated property Joining_Type. Returns UJoiningType values. Stable ICU 2.2
UCHAR_LINE_BREAK | Enumerated property Line_Break. Returns ULineBreak values. Stable ICU 2.2
UCHAR_NUMERIC_TYPE | Enumerated property Numeric_Type. Returns UNumericType values. Stable ICU 2.2
UCHAR_SCRIPT | Enumerated property Script. Same as uscript_getScript, returns UScriptCode values. Stable ICU 2.2
UCHAR_HANGUL_SYLLABLE_TYPE | Enumerated property Hangul_Syllable_Type, new in Unicode 4. Returns UHangulSyllableType values. Stable ICU 2.6
UCHAR_NFD_QUICK_CHECK | Enumerated property NFD_Quick_Check. Returns UNormalizationCheckResult values. Stable ICU 3.0
UCHAR_NFKD_QUICK_CHECK | Enumerated property NFKD_Quick_Check. Returns UNormalizationCheckResult values. Stable ICU 3.0
UCHAR_NFC_QUICK_CHECK | Enumerated property NFC_Quick_Check. Returns UNormalizationCheckResult values. Stable ICU 3.0
UCHAR_NFKC_QUICK_CHECK | Enumerated property NFKC_Quick_Check. Returns UNormalizationCheckResult values. Stable ICU 3.0
UCHAR_LEAD_CANONICAL_COMBINING_CLASS | Enumerated property Lead_Canonical_Combining_Class. ICU-specific property for the ccc of the first code point of the decomposition, or lccc(c)=ccc(NFD(c)[0]). Useful for checking for canonically ordered text; see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD . Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. Stable ICU 3.0
UCHAR_TRAIL_CANONICAL_COMBINING_CLASS | Enumerated property Trail_Canonical_Combining_Class. ICU-specific property for the ccc of the last code point of the decomposition, or tccc(c)=ccc(NFD(c)[last]). Useful for checking for canonically ordered text; see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD . Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. Stable ICU 3.0
UCHAR_GRAPHEME_CLUSTER_BREAK | Enumerated property Grapheme_Cluster_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns UGraphemeClusterBreak values. Stable ICU 3.4
UCHAR_SENTENCE_BREAK | Enumerated property Sentence_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns USentenceBreak values. Stable ICU 3.4
UCHAR_WORD_BREAK | Enumerated property Word_Break (new in Unicode 4.1). Used in UAX #29: Text Boundaries (http://www.unicode.org/reports/tr29/) Returns UWordBreakValues values. Stable ICU 3.4
UCHAR_BIDI_PAIRED_BRACKET_TYPE | Enumerated property Bidi_Paired_Bracket_Type (new in Unicode 6.3). Used in UAX #9: Unicode Bidirectional Algorithm (http://www.unicode.org/reports/tr9/) Returns UBidiPairedBracketType values. Stable ICU 52
UCHAR_INDIC_POSITIONAL_CATEGORY | Enumerated property Indic_Positional_Category. New in Unicode 6.0 as provisional property Indic_Matra_Category; renamed and changed to informative in Unicode 8.0. See http://www.unicode.org/reports/tr44/#IndicPositionalCategory.txt Stable ICU 63
UCHAR_INDIC_SYLLABIC_CATEGORY | Enumerated property Indic_Syllabic_Category. New in Unicode 6.0 as provisional; informative since Unicode 8.0. See http://www.unicode.org/reports/tr44/#IndicSyllabicCategory.txt Stable ICU 63
UCHAR_VERTICAL_ORIENTATION | Enumerated property Vertical_Orientation. Used for UAX #50 Unicode Vertical Text Layout (https://www.unicode.org/reports/tr50/). New as a UCD property in Unicode 10.0. Stable ICU 63
UCHAR_IDENTIFIER_STATUS | Enumerated property Identifier_Status. Used for UTS #39 General Security Profile for Identifiers (https://www.unicode.org/reports/tr39/#General_Security_Profile). Draft This API may be changed in the future versions and was introduced in ICU 75
UCHAR_INDIC_CONJUNCT_BREAK | Enumerated property Indic_Conjunct_Break. Used in the grapheme cluster break algorithm in UAX #29. Draft This API may be changed in the future versions and was introduced in ICU 76
UCHAR_INT_LIMIT | One more than the last constant for enumerated/integer Unicode properties. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_GENERAL_CATEGORY_MASK | Bitmask property General_Category_Mask. This is the General_Category property returned as a bit mask. When used in u_getIntPropertyValue(c), same as U_MASK(u_charType(c)), returns bit masks for UCharCategory values where exactly one bit is set. When used with u_getPropertyValueName() and u_getPropertyValueEnum(), a multi-bit mask is used for sets of categories like "Letters". Mask values should be cast to uint32_t. Stable ICU 2.4
UCHAR_MASK_START | First constant for bit-mask Unicode properties. Stable ICU 2.4
UCHAR_MASK_LIMIT | One more than the last constant for bit-mask Unicode properties. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_NUMERIC_VALUE | Double property Numeric_Value. Corresponds to u_getNumericValue. Stable ICU 2.4
UCHAR_DOUBLE_START | First constant for double Unicode properties. Stable ICU 2.4
UCHAR_DOUBLE_LIMIT | One more than the last constant for double Unicode properties. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_AGE | String property Age. Corresponds to u_charAge. Stable ICU 2.4
UCHAR_STRING_START | First constant for string Unicode properties. Stable ICU 2.4
UCHAR_BIDI_MIRRORING_GLYPH | String property Bidi_Mirroring_Glyph. Corresponds to u_charMirror. Stable ICU 2.4
UCHAR_CASE_FOLDING | String property Case_Folding. Corresponds to u_strFoldCase in ustring.h. Stable ICU 2.4
UCHAR_ISO_COMMENT | Deprecated string property ISO_Comment. Corresponds to u_getISOComment. Deprecated ICU 49
UCHAR_LOWERCASE_MAPPING | String property Lowercase_Mapping. Corresponds to u_strToLower in ustring.h. Stable ICU 2.4
UCHAR_NAME | String property Name. Corresponds to u_charName. Stable ICU 2.4
UCHAR_SIMPLE_CASE_FOLDING | String property Simple_Case_Folding. Corresponds to u_foldCase. Stable ICU 2.4
UCHAR_SIMPLE_LOWERCASE_MAPPING | String property Simple_Lowercase_Mapping. Corresponds to u_tolower. Stable ICU 2.4
UCHAR_SIMPLE_TITLECASE_MAPPING | String property Simple_Titlecase_Mapping. Corresponds to u_totitle. Stable ICU 2.4
UCHAR_SIMPLE_UPPERCASE_MAPPING | String property Simple_Uppercase_Mapping. Corresponds to u_toupper. Stable ICU 2.4
UCHAR_TITLECASE_MAPPING | String property Titlecase_Mapping. Corresponds to u_strToTitle in ustring.h. Stable ICU 2.4
UCHAR_UNICODE_1_NAME | String property Unicode_1_Name. This property is of little practical value. Beginning with ICU 49, ICU APIs return an empty string for this property. Corresponds to u_charName(U_UNICODE_10_CHAR_NAME). Deprecated ICU 49
UCHAR_UPPERCASE_MAPPING | String property Uppercase_Mapping. Corresponds to u_strToUpper in ustring.h. Stable ICU 2.4
UCHAR_BIDI_PAIRED_BRACKET | String property Bidi_Paired_Bracket (new in Unicode 6.3). Corresponds to u_getBidiPairedBracket. Stable ICU 52
UCHAR_STRING_LIMIT | One more than the last constant for string Unicode properties. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_SCRIPT_EXTENSIONS | Miscellaneous property Script_Extensions (new in Unicode 6.0). Some characters are commonly used in multiple scripts. For more information, see UAX #24: http://www.unicode.org/reports/tr24/. Corresponds to uscript_hasScript and uscript_getScriptExtensions in uscript.h. Stable ICU 4.6
UCHAR_OTHER_PROPERTY_START | First constant for Unicode properties with unusual value types. Stable ICU 4.6
UCHAR_IDENTIFIER_TYPE | Miscellaneous property Identifier_Type. Used for UTS #39 General Security Profile for Identifiers (https://www.unicode.org/reports/tr39/#General_Security_Profile). Corresponds to u_hasIDType() and u_getIDTypes(). Each code point maps to a set of UIdentifierType values. See also u_hasIDType u_getIDTypes Draft This API may be changed in the future versions and was introduced in ICU 75
UCHAR_OTHER_PROPERTY_LIMIT | One more than the last constant for Unicode properties with unusual value types. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.
UCHAR_INVALID_CODE | Represents a nonexistent or invalid property or property value. Stable ICU 2.4

Definition at line 196 of file uchar.h.

## ◆ UPropertyNameChoice

enum UPropertyNameChoice

Selector constants for u_getPropertyName() and u_getPropertyValueName().

These selectors are used to choose which name is returned for a given property or value. All properties and values have a long name. Most have a short name, but some do not. Unicode allows for additional names, beyond the long and short name, which would be indicated by U_LONG_PROPERTY_NAME + i, where i=1, 2,...

See also
  u_getPropertyName()
  u_getPropertyValueName()

Stable
  ICU 2.4

Enumerator
U_PROPERTY_NAME_CHOICE_COUNT | One more than the highest normal UPropertyNameChoice value. Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2086 of file uchar.h.

## ◆ USentenceBreak

enum USentenceBreak

Sentence Break constants.

See also
  UCHAR_SENTENCE_BREAK

Stable
  ICU 3.4

Enumerator
U_SB_COUNT | One more than the highest normal USentenceBreak value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_SENTENCE_BREAK). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2426 of file uchar.h.

## ◆ UVerticalOrientation

enum UVerticalOrientation

Vertical Orientation constants.

See also
  UCHAR_VERTICAL_ORIENTATION

Stable
  ICU 63

Enumerator
U_VO_ROTATED | Stable ICU 63
U_VO_TRANSFORMED_ROTATED | Stable ICU 63
U_VO_TRANSFORMED_UPRIGHT | Stable ICU 63
U_VO_UPRIGHT | Stable ICU 63

Definition at line 2777 of file uchar.h.

## ◆ UWordBreakValues

enum UWordBreakValues

Word Break constants.

(UWordBreak is a pre-existing enum type in ubrk.h for word break status tags.)

See also
  UCHAR_WORD_BREAK

Stable
  ICU 3.4

Enumerator
U_WB_CR | Stable ICU 4.0
U_WB_EXTEND | Stable ICU 4.0
U_WB_LF | Stable ICU 4.0
U_WB_MIDNUMLET | Stable ICU 4.0
U_WB_NEWLINE | Stable ICU 4.0
U_WB_REGIONAL_INDICATOR | Stable ICU 50
U_WB_HEBREW_LETTER | Stable ICU 52
U_WB_SINGLE_QUOTE | Stable ICU 52
U_WB_DOUBLE_QUOTE | Stable ICU 52
U_WB_E_BASE | Stable ICU 58
U_WB_E_BASE_GAZ | Stable ICU 58
U_WB_E_MODIFIER | Stable ICU 58
U_WB_GLUE_AFTER_ZWJ | Stable ICU 58
U_WB_ZWJ | Stable ICU 58
U_WB_WSEGSPACE | Stable ICU 62
U_WB_COUNT | One more than the highest normal UWordBreakValues value. The highest value is available via u_getIntPropertyMaxValue(UCHAR_WORD_BREAK). Deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420.

Definition at line 2363 of file uchar.h.

## Function Documentation

## ◆ u_charAge()

U_CAPI void u_charAge | ( | UChar32 | c,
|  | UVersionInfo | versionArray )

Get the "age" of the code point.

The "age" is the Unicode version when the code point was first designated (as a non-character or for Private Use) or assigned a character. This can be useful to avoid emitting code points to receiving processes that do not accept newer characters. The data is from the UCD file DerivedAge.txt.

Parameters

  c | The code point.
  versionArray | The Unicode version number array, to be filled in.

Stable
  ICU 2.1

## ◆ u_charDigitValue()

U_CAPI int32_t u_charDigitValue | ( | UChar32 | c | ) |

Returns the decimal digit value of a decimal digit character.

Such characters have the general category "Nd" (decimal digit numbers) and a Numeric_Type of Decimal.

Unlike ICU releases before 2.6, no digit values are returned for any Han characters because Han number characters are often used with a special Chinese-style number format (with characters for powers of 10 in between) instead of in decimal-positional notation. Unicode 4 explicitly assigns Han number characters the Numeric_Type Numeric instead of Decimal. See Jitterbug 1483 for more details.

Use u_getIntPropertyValue(c, UCHAR_NUMERIC_TYPE) and u_getNumericValue() for complete numeric Unicode properties.

Parameters

  c | the code point for which to get the decimal digit value

Returns
  the decimal digit value of c, or -1 if c is not a decimal digit character

See also
  u_getNumericValue

Stable
  ICU 2.0

Referenced by icu::DecimalFormatSymbols::setSymbol().

## ◆ u_charDirection()

U_CAPI UCharDirection u_charDirection | ( | UChar32 | c | ) |

Returns the bidirectional category value for the code point, which is used in the Unicode bidirectional algorithm (UAX #9 http://www.unicode.org/reports/tr9/).

Note that some unassigned code points have bidi values of R or AL because they are in blocks that are reserved for Right-To-Left scripts.

Same as java.lang.Character.getDirectionality()

Parameters

  c | the code point to be tested

Returns
  the bidirectional category (UCharDirection) value

See also
  UCharDirection

Stable
  ICU 2.0

## ◆ u_charFromName()

U_CAPI UChar32 u_charFromName | ( | UCharNameChoice | nameChoice,
|  | const char * | name,
|  | UErrorCode * | pErrorCode )

Find a Unicode character by its name and return its code point value.

The name is matched exactly and completely. If the name does not correspond to a code point, pErrorCode is set to `U_INVALID_CHAR_FOUND`. A Unicode 1.0 name is matched only if it differs from the modern name. Unicode names are all uppercase. Extended names are lowercase followed by an uppercase hexadecimal number, and within angle brackets.

Parameters

  nameChoice | Selector for which name to match.
  name | The name to match.
  pErrorCode | Pointer to a UErrorCode variable

Returns
  The Unicode value of the code point with the given name, or an undefined value if there is no such code point.

See also
  UCharNameChoice
  u_charName
  u_enumCharNames

Stable
  ICU 1.7

## ◆ u_charMirror()

U_CAPI UChar32 u_charMirror | ( | UChar32 | c | ) |

Maps the specified character to a "mirror-image" character.

For characters with the Bidi_Mirrored property, implementations sometimes need a "poor man's" mapping to another Unicode character (code point) such that the default glyph may serve as the mirror-image of the default glyph of the specified character. This is useful for text conversion to and from codepages with visual order, and for displays without glyph selection capabilities.

Parameters

  c | the code point to be mapped

Returns
  another Unicode code point that may serve as a mirror-image substitute, or c itself if there is no such mapping or c does not have the Bidi_Mirrored property

See also
  UCHAR_BIDI_MIRRORED
  u_isMirrored

Stable
  ICU 2.0

## ◆ u_charName()

U_CAPI int32_t u_charName | ( | UChar32 | code,
|  | UCharNameChoice | nameChoice,
|  | char * | buffer,
|  | int32_t | bufferLength,
|  | UErrorCode * | pErrorCode )

Retrieve the name of a Unicode character.

Depending on `nameChoice`, the character name written into the buffer is the "modern" name or the name that was defined in Unicode version 1.0. The name contains only "invariant" characters like A-Z, 0-9, space, and '-'. Unicode 1.0 names are only retrieved if they are different from the modern names and if the data file contains the data for them. gennames may or may not be called with a command line option to include 1.0 names in unames.dat.

Parameters

  code | The character (code point) for which to get the name. It must be `0<=code<=0x10ffff`.
  nameChoice | Selector for which name to get.
  buffer | Destination address for copying the name. The name will always be zero-terminated. If there is no name, then the buffer will be set to the empty string.
  bufferLength | `==sizeof(buffer)`
  pErrorCode | Pointer to a UErrorCode variable; check for `U_SUCCESS()` after `u_charName()` returns.

Returns
  The length of the name, or 0 if there is no name for this character. If the bufferLength is less than or equal to the length, then the buffer contains the truncated name and the returned length indicates the full length of the name. The length does not include the zero-termination.

See also
  UCharNameChoice
  u_charFromName
  u_enumCharNames

Stable
  ICU 2.0

## ◆ u_charType()

U_CAPI int8_t u_charType | ( | UChar32 | c | ) |

Returns the general category value for the code point.

Same as java.lang.Character.getType().

Parameters

  c | the code point to be tested

Returns
  the general category (UCharCategory) value

See also
  UCharCategory

Stable
  ICU 2.0

## ◆ u_digit()

U_CAPI int32_t u_digit | ( | UChar32 | ch,
|  | int8_t | radix )

Returns the decimal digit value of the code point in the specified radix.

If the radix is not in the range `2<=radix<=36` or if the value of `c` is not a valid digit in the specified radix, `-1` is returned. A character is a valid digit if at least one of the following is true:

- The character has a decimal digit value. Such characters have the general category "Nd" (decimal digit numbers) and a Numeric_Type of Decimal. In this case the value is the character's decimal digit value.
- The character is one of the uppercase Latin letters `'A'` through `'Z'`. In this case the value is `c-'A'+10`.
- The character is one of the lowercase Latin letters `'a'` through `'z'`. In this case the value is `ch-'a'+10`.
- Latin letters from both the ASCII range (0061..007A, 0041..005A) as well as from the Fullwidth ASCII range (FF41..FF5A, FF21..FF3A) are recognized.

Same as java.lang.Character.digit().

Parameters

  ch | the code point to be tested.
  radix | the radix.

Returns
  the numeric value represented by the character in the specified radix, or -1 if there is no value or if the value exceeds the radix.

See also
  UCHAR_NUMERIC_TYPE
  u_forDigit
  u_charDigitValue
  u_isdigit

Stable
  ICU 2.0

## ◆ u_enumCharNames()

U_CAPI void u_enumCharNames | ( | UChar32 | start,
|  | UChar32 | limit,
|  | UEnumCharNamesFn * | fn,
|  | void * | context,
|  | UCharNameChoice | nameChoice,
|  | UErrorCode * | pErrorCode )

Enumerate all assigned Unicode characters between the start and limit code points (start inclusive, limit exclusive) and call a function for each, passing the code point value and the character name.

For Unicode 1.0 names, only those are enumerated that differ from the modern names.

Parameters

  start | The first code point in the enumeration range.
  limit | One more than the last code point in the enumeration range (the first one after the range).
  fn | The function that is to be called for each character name.
  context | An arbitrary pointer that is passed to the function.
  nameChoice | Selector for which kind of names to enumerate.
  pErrorCode | Pointer to a UErrorCode variable

See also
  UCharNameChoice
  UEnumCharNamesFn
  u_charName
  u_charFromName

Stable
  ICU 1.7

## ◆ u_enumCharTypes()

U_CAPI void u_enumCharTypes | ( | UCharEnumTypeRange * | enumRange,
|  | const void * | context )

Enumerate efficiently all code points with their Unicode general categories.

This is useful for building data structures (e.g., UnicodeSet's), for enumerating all assigned code points (type!=U_UNASSIGNED), etc.

For each contiguous range of code points with a given general category ("character type"), the UCharEnumTypeRange function is called. Adjacent ranges have different types. The Unicode Standard guarantees that the numeric value of the type is 0..31.

Parameters

  enumRange | a pointer to a function that is called for each contiguous range of code points with the same general category
  context | an opaque pointer that is passed on to the callback function

Stable
  ICU 2.1

See also
  UCharCategory
  UCharEnumTypeRange

## ◆ u_foldCase()

U_CAPI UChar32 u_foldCase | ( | UChar32 | c,
|  | uint32_t | options )

The given character is mapped to its case folding equivalent according to UnicodeData.txt and CaseFolding.txt; if the character has no case folding equivalent, the character itself is returned.

This function only returns the simple, single-code point case mapping. Full case mappings should be used whenever possible because they produce better results by working on whole strings. They take into account the string context and the language and can map to a result string with a different length as appropriate. Full case mappings are applied by the string case mapping functions, see ustring.h and the UnicodeString class. See also the User Guide chapter on C/POSIX migration: https://unicode-org.github.io/icu/userguide/icu/posix#case-mappings

Parameters

  c | the code point to be mapped
  options | Either U_FOLD_CASE_DEFAULT or U_FOLD_CASE_EXCLUDE_SPECIAL_I

Returns
  the Simple_Case_Folding of the code point, if any; otherwise the code point itself.

Stable
  ICU 2.0

## ◆ u_forDigit()

U_CAPI UChar32 u_forDigit | ( | int32_t | digit,
|  | int8_t | radix )

Determines the character representation for a specific digit in the specified radix.

If the value of `radix` is not a valid radix, or the value of `digit` is not a valid digit in the specified radix, the null character (`U+0000`) is returned.

The `radix` argument is valid if it is greater than or equal to 2 and less than or equal to 36. The `digit` argument is valid if `0 <= digit < radix`.

If the digit is less than 10, then `'0' + digit` is returned. Otherwise, the value `'a' + digit - 10` is returned.

Same as java.lang.Character.forDigit().

Parameters

  digit | the number to convert to a character.
  radix | the radix.

Returns
  the `char` representation of the specified digit in the specified radix.

See also
  u_digit
  u_charDigitValue
  u_isdigit

Stable
  ICU 2.0

## ◆ u_getBidiPairedBracket()

U_CAPI UChar32 u_getBidiPairedBracket | ( | UChar32 | c | ) |

Maps the specified character to its paired bracket character.

For Bidi_Paired_Bracket_Type!=None, this is the same as u_charMirror(). Otherwise c itself is returned. See http://www.unicode.org/reports/tr9/

Parameters

  c | the code point to be mapped

Returns
  the paired bracket code point, or c itself if there is no such mapping (Bidi_Paired_Bracket_Type=None)

See also
  UCHAR_BIDI_PAIRED_BRACKET
  UCHAR_BIDI_PAIRED_BRACKET_TYPE
  u_charMirror

Stable
  ICU 52

## ◆ u_getBinaryPropertySet()

U_CAPI const USet * u_getBinaryPropertySet | ( | UProperty | property,
|  | UErrorCode * | pErrorCode )

Returns a frozen USet for a binary property.

The library retains ownership over the returned object. Sets an error code if the property number is not one for a binary property.

The returned set contains all code points for which the property is true.

Parameters

  property | UCHAR_BINARY_START..UCHAR_BINARY_LIMIT-1
  pErrorCode | an in/out ICU UErrorCode

Returns
  the property as a set

See also
  UProperty
  u_hasBinaryProperty
  Unicode::fromUSet

Stable
  ICU 63

## ◆ u_getCombiningClass()

U_CAPI uint8_t u_getCombiningClass | ( | UChar32 | c | ) |

Returns the combining class of the code point as specified in UnicodeData.txt.

Parameters

  c | the code point of the character

Returns
  the combining class of the character

Stable
  ICU 2.0

## ◆ u_getFC_NFKC_Closure()

U_CAPI int32_t u_getFC_NFKC_Closure | ( | UChar32 | c,
|  | UChar * | dest,
|  | int32_t | destCapacity,
|  | UErrorCode * | pErrorCode )

Get the FC_NFKC_Closure property string for a character.

See Unicode Standard Annex #15 for details, search for "FC_NFKC_Closure" or for "FNC": http://www.unicode.org/reports/tr15/

Parameters

  c | The character (code point) for which to get the FC_NFKC_Closure string. It must be `0<=c<=0x10ffff`.
  dest | Destination address for copying the string. The string will be zero-terminated if possible. If there is no FC_NFKC_Closure string, then the buffer will be set to the empty string.
  destCapacity | `==sizeof(dest)`
  pErrorCode | Pointer to a UErrorCode variable.

Returns
  The length of the string, or 0 if there is no FC_NFKC_Closure string for this character. If the destCapacity is less than or equal to the length, then the buffer contains the truncated name and the returned length indicates the full length of the name. The length does not include the zero-termination.

Stable
  ICU 2.2

## ◆ u_getIDTypes()

U_CAPI int32_t u_getIDTypes | ( | UChar32 | c,
|  | UIdentifierType * | types,
|  | int32_t | capacity,
|  | UErrorCode * | pErrorCode )

Writes code point c's Identifier_Type as a list of UIdentifierType values to the output types array and returns the number of types.

Used for UTS #39 General Security Profile for Identifiers (https://www.unicode.org/reports/tr39/#General_Security_Profile).

Each code point maps to a set of UIdentifierType values. There is always at least one type. The order of output values is undefined. Each type is output at most once; there cannot be more output values than UIdentifierType constants. In addition, only some of the types can be combined with others, and usually only a small number of types occur together. Future versions might add additional types. See UTS #39 and its data files for details.

If there are more than capacity types to be written, then U_BUFFER_OVERFLOW_ERROR is set and the number of types is returned. (Usual ICU buffer handling behavior.)

Parameters

  c | code point
  types | output array
  capacity | capacity of the array
  pErrorCode | Standard ICU error code. Its input value must pass the U_SUCCESS() test, or else the function returns immediately. Check for U_FAILURE() on output or use with function chaining. (See User Guide for details.)

Returns
  number of values in c's Identifier_Type, written to types unless U_BUFFER_OVERFLOW_ERROR indicates insufficient capacity

Draft
  This API may be changed in the future versions and was introduced in ICU 75

## ◆ u_getIntPropertyMap()

U_CAPI const UCPMap * u_getIntPropertyMap | ( | UProperty | property,
|  | UErrorCode * | pErrorCode )

Returns an immutable UCPMap for an enumerated/catalog/int-valued property.

The library retains ownership over the returned object. Sets an error code if the property number is not one for an "int property".

The returned object maps all Unicode code points to their values for that property. For documentation of the integer values see u_getIntPropertyValue().

Parameters

  property | UCHAR_INT_START..UCHAR_INT_LIMIT-1
  pErrorCode | an in/out ICU UErrorCode

Returns
  the property as a map

See also
  UProperty
  u_getIntPropertyValue

Stable
  ICU 63

## ◆ u_getIntPropertyMaxValue()

U_CAPI int32_t u_getIntPropertyMaxValue | ( | UProperty | which | ) |

Get the maximum value for an enumerated/integer/binary Unicode property.

Can be used together with u_getIntPropertyMinValue to allocate arrays of UnicodeSet or similar.

Examples for min/max values (for Unicode 3.2):

- UCHAR_BIDI_CLASS: 0/18 (U_LEFT_TO_RIGHT/U_BOUNDARY_NEUTRAL)
- UCHAR_SCRIPT: 0/45 (USCRIPT_COMMON/USCRIPT_TAGBANWA)
- UCHAR_IDEOGRAPHIC: 0/1 (false/true)

For undefined UProperty constant values, min/max values will be 0/-1.

Parameters

  which | UProperty selector constant, identifies which binary property to check. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.

Returns
  Maximum value returned by u_getIntPropertyValue for a Unicode property. <=0 if the property selector is out of range.

See also
  UProperty
  u_hasBinaryProperty
  u_getUnicodeVersion
  u_getIntPropertyMaxValue
  u_getIntPropertyValue

Stable
  ICU 2.2

## ◆ u_getIntPropertyMinValue()

U_CAPI int32_t u_getIntPropertyMinValue | ( | UProperty | which | ) |

Get the minimum value for an enumerated/integer/binary Unicode property.

Can be used together with u_getIntPropertyMaxValue to allocate arrays of UnicodeSet or similar.

Parameters

  which | UProperty selector constant, identifies which binary property to check. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.

Returns
  Minimum value returned by u_getIntPropertyValue for a Unicode property. 0 if the property selector is out of range.

See also
  UProperty
  u_hasBinaryProperty
  u_getUnicodeVersion
  u_getIntPropertyMaxValue
  u_getIntPropertyValue

Stable
  ICU 2.2

## ◆ u_getIntPropertyValue()

U_CAPI int32_t u_getIntPropertyValue | ( | UChar32 | c,
|  | UProperty | which )

Get the property value for an enumerated or integer Unicode property for a code point.

Also returns binary and mask property values.

Unicode, especially in version 3.2, defines many more properties than the original set in UnicodeData.txt.

The properties APIs are intended to reflect Unicode properties as defined in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR). For details about the properties see http://www.unicode.org/ . For names of Unicode properties see the UCD file PropertyAliases.txt.

Sample usage: UEastAsianWidth ea=(UEastAsianWidth)u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH); UBool b=(UBool)u_getIntPropertyValue(c, UCHAR_IDEOGRAPHIC);

Parameters

  c | Code point to test.
  which | UProperty selector constant, identifies which property to check. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT or UCHAR_INT_START<=which<UCHAR_INT_LIMIT or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.

Returns
  Numeric value that is directly the property value or, for enumerated properties, corresponds to the numeric value of the enumerated constant of the respective property value enumeration type (cast to enum type if necessary). Returns 0 or 1 (for false/true) for binary Unicode properties. Returns a bit-mask for mask properties. Returns 0 if 'which' is out of bounds or if the Unicode version does not have data for the property at all, or not for this code point.

See also
  UProperty
  u_hasBinaryProperty
  u_getIntPropertyMinValue
  u_getIntPropertyMaxValue
  u_getIntPropertyMap
  u_getUnicodeVersion

Stable
  ICU 2.2

## ◆ u_getISOComment()

int32_t u_getISOComment | ( | UChar32 | c,
|  | char * | dest,
|  | int32_t | destCapacity,
|  | UErrorCode * | pErrorCode )

Returns an empty string.

Used to return the ISO 10646 comment for a character. The Unicode ISO_Comment property is deprecated and has no values.

Parameters

  c | The character (code point) for which to get the ISO comment. It must be `0<=c<=0x10ffff`.
  dest | Destination address for copying the comment. The comment will be zero-terminated if possible. If there is no comment, then the buffer will be set to the empty string.
  destCapacity | `==sizeof(dest)`
  pErrorCode | Pointer to a UErrorCode variable; check for `U_SUCCESS()` after `u_getISOComment()` returns.

Returns
  0

Deprecated
  ICU 49

## ◆ u_getNumericValue()

U_CAPI double u_getNumericValue | ( | UChar32 | c | ) |

Get the numeric value for a Unicode code point as defined in the Unicode Character Database.

A "double" return type is necessary because some numeric values are fractions, negative, or too large for int32_t.

For characters without any numeric values in the Unicode Character Database, this function will return U_NO_NUMERIC_VALUE. Note: This is different from the Unicode Standard which specifies NaN as the default value. (NaN is not available on all platforms.)

Similar to java.lang.Character.getNumericValue(), but u_getNumericValue() also supports negative values, large values, and fractions, while Java's getNumericValue() returns values 10..35 for ASCII letters.

Parameters

  c | Code point to get the numeric value for.

Returns
  Numeric value of c, or U_NO_NUMERIC_VALUE if none is defined.

See also
  U_NO_NUMERIC_VALUE

Stable
  ICU 2.2

## ◆ u_getPropertyEnum()

U_CAPI UProperty u_getPropertyEnum | ( | const char * | alias | ) |

Return the UProperty enum for a given property name, as specified in the Unicode database file PropertyAliases.txt.

Short, long, and any other variants are recognized.

In addition, this function maps the synthetic names "gcm" / "General_Category_Mask" to the property UCHAR_GENERAL_CATEGORY_MASK. These names are not in PropertyAliases.txt.

Parameters

  alias | the property name to be matched. The name is compared using "loose matching" as described in PropertyAliases.txt.

Returns
  a UProperty enum, or UCHAR_INVALID_CODE if the given name does not match any property.

See also
  UProperty

Stable
  ICU 2.4

## ◆ u_getPropertyName()

U_CAPI const char * u_getPropertyName | ( | UProperty | property,
|  | UPropertyNameChoice | nameChoice )

Return the Unicode name for a given property, as given in the Unicode database file PropertyAliases.txt.

In addition, this function maps the property UCHAR_GENERAL_CATEGORY_MASK to the synthetic names "gcm" / "General_Category_Mask". These names are not in PropertyAliases.txt.

Parameters

  property | UProperty selector other than UCHAR_INVALID_CODE. If out of range, NULL is returned.
  nameChoice | selector for which name to get. If out of range, NULL is returned. All properties have a long name. Most have a short name, but some do not. Unicode allows for additional names; if present these will be returned by U_LONG_PROPERTY_NAME + i, where i=1, 2,...

Returns
  a pointer to the name, or NULL if either the property or the nameChoice is out of range. If a given nameChoice returns NULL, then all larger values of nameChoice will return NULL, with one exception: if NULL is returned for U_SHORT_PROPERTY_NAME, then U_LONG_PROPERTY_NAME (and higher) may still return a non-NULL value. The returned pointer is valid until u_cleanup() is called.

See also
  UProperty
  UPropertyNameChoice

Stable
  ICU 2.4

## ◆ u_getPropertyValueEnum()

U_CAPI int32_t u_getPropertyValueEnum | ( | UProperty | property,
|  | const char * | alias )

Return the property value integer for a given value name, as specified in the Unicode database file PropertyValueAliases.txt.

Short, long, and any other variants are recognized.

Note: Some of the names in PropertyValueAliases.txt will only be recognized with UCHAR_GENERAL_CATEGORY_MASK, not UCHAR_GENERAL_CATEGORY. These include: "C" / "Other", "L" / "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P" / "Punctuation", "S" / "Symbol", and "Z" / "Separator".

Parameters

  property | UProperty selector constant. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT or UCHAR_INT_START<=which<UCHAR_INT_LIMIT or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT. If out of range, UCHAR_INVALID_CODE is returned.
  alias | the value name to be matched. The name is compared using "loose matching" as described in PropertyValueAliases.txt.

Returns
  a value integer or UCHAR_INVALID_CODE if the given name does not match any value of the given property, or if the property is invalid. Note: UCHAR_GENERAL_CATEGORY_MASK values are not values of UCharCategory, but rather mask values produced by U_GET_GC_MASK(). This allows grouped categories such as [:L:] to be represented.

See also
  UProperty

Stable
  ICU 2.4

## ◆ u_getPropertyValueName()

U_CAPI const char * u_getPropertyValueName | ( | UProperty | property,
|  | int32_t | value,
|  | UPropertyNameChoice | nameChoice )

Return the Unicode name for a given property value, as given in the Unicode database file PropertyValueAliases.txt.

Note: Some of the names in PropertyValueAliases.txt can only be retrieved using UCHAR_GENERAL_CATEGORY_MASK, not UCHAR_GENERAL_CATEGORY. These include: "C" / "Other", "L" / "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P" / "Punctuation", "S" / "Symbol", and "Z" / "Separator".

Parameters

  property | UProperty selector constant. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT or UCHAR_INT_START<=which<UCHAR_INT_LIMIT or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT. If out of range, NULL is returned.
  value | selector for a value for the given property. If out of range, NULL is returned. In general, valid values range from 0 up to some maximum. There are a few exceptions: (1.) UCHAR_BLOCK values begin at the non-zero value UBLOCK_BASIC_LATIN. (2.) UCHAR_CANONICAL_COMBINING_CLASS values are not contiguous and range from 0..240. (3.) UCHAR_GENERAL_CATEGORY_MASK values are not values of UCharCategory, but rather mask values produced by U_GET_GC_MASK(). This allows grouped categories such as [:L:] to be represented. Mask values range non-contiguously from 1..U_GC_P_MASK.
  nameChoice | selector for which name to get. If out of range, NULL is returned. All values have a long name. Most have a short name, but some do not. Unicode allows for additional names; if present these will be returned by U_LONG_PROPERTY_NAME + i, where i=1, 2,...

Returns
  a pointer to the name, or NULL if either the property or the nameChoice is out of range. If a given nameChoice returns NULL, then all larger values of nameChoice will return NULL, with one exception: if NULL is returned for U_SHORT_PROPERTY_NAME, then U_LONG_PROPERTY_NAME (and higher) may still return a non-NULL value. The returned pointer is valid until u_cleanup() is called.

See also
  UProperty
  UPropertyNameChoice

Stable
  ICU 2.4

## ◆ u_getUnicodeVersion()

U_CAPI void u_getUnicodeVersion | ( | UVersionInfo | versionArray | ) |

Gets the Unicode version information.

The version array is filled in with the version information for the Unicode standard that is currently used by ICU. For example, Unicode version 3.1.1 is represented as an array with the values { 3, 1, 1, 0 }.

Parameters

  versionArray | an output array that will be filled in with the Unicode version number

Stable
  ICU 2.0

## ◆ u_hasBinaryProperty()

U_CAPI UBool u_hasBinaryProperty | ( | UChar32 | c,
|  | UProperty | which )

Check a binary Unicode property for a code point.

Unicode, especially in version 3.2, defines many more properties than the original set in UnicodeData.txt.

The properties APIs are intended to reflect Unicode properties as defined in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR). For details about the properties see http://www.unicode.org/ucd/ . For names of Unicode properties see the UCD file PropertyAliases.txt.

Important: If ICU is built with UCD files from Unicode versions below 3.2, then properties marked with "new in Unicode 3.2" are not or not fully available.

Parameters

  c | Code point to test.
  which | UProperty selector constant, identifies which binary property to check. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT.

Returns
  true or false according to the binary Unicode property value for c. Also false if 'which' is out of bounds or if the Unicode version does not have data for the property at all.

See also
  UProperty
  u_getBinaryPropertySet
  u_getIntPropertyValue
  u_getUnicodeVersion

Stable
  ICU 2.1

## ◆ u_hasIDType()

U_CAPI bool u_hasIDType | ( | UChar32 | c,
|  | UIdentifierType | type )

Does the set of Identifier_Type values code point c contain the given type?

Used for UTS #39 General Security Profile for Identifiers (https://www.unicode.org/reports/tr39/#General_Security_Profile).

Each code point maps to a set of UIdentifierType values.

Parameters

  c | code point
  type | Identifier_Type to check

Returns
  true if type is in Identifier_Type(c)

Draft
  This API may be changed in the future versions and was introduced in ICU 75

## ◆ u_isalnum()

U_CAPI UBool u_isalnum | ( | UChar32 | c | ) |

Determines whether the specified code point is an alphanumeric character (letter or digit) according to Java.

True for characters with general categories "L" (letters) and "Nd" (decimal digit numbers).

Same as java.lang.Character.isLetterOrDigit().

In addition to being equivalent to a Java function, this also serves as a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is an alphanumeric character according to Character.isLetterOrDigit()

Stable
  ICU 2.0

## ◆ u_isalpha()

U_CAPI UBool u_isalpha | ( | UChar32 | c | ) |

Determines whether the specified code point is a letter character.

True for general categories "L" (letters).

Same as java.lang.Character.isLetter().

In addition to being equivalent to a Java function, this also serves as a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a letter character

See also
  u_isdigit
  u_isalnum

Stable
  ICU 2.0

## ◆ u_isbase()

U_CAPI UBool u_isbase | ( | UChar32 | c | ) |

Non-standard: Determines whether the specified code point is a base character.

True for general categories "L" (letters), "N" (numbers), "Mc" (spacing combining marks), and "Me" (enclosing marks).

Note that this is different from the Unicode Standard definition in chapter 3.6, conformance clause D51 “Base character”, which defines base characters as the code points with general categories Letter (L), Number (N), Punctuation (P), Symbol (S), or Space Separator (Zs).

Parameters

  c | the code point to be tested

Returns
  true if the code point is a base character according to this function

See also
  u_isalpha
  u_isdigit

Stable
  ICU 2.0

## ◆ u_isblank()

U_CAPI UBool u_isblank | ( | UChar32 | c | ) |

Determines whether the specified code point is a "blank" or "horizontal space", a character that visibly separates words on a line.

The following are equivalent definitions:

true for Unicode White_Space characters except for "vertical space controls" where "vertical space controls" are the following characters: U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS)

same as

true for U+0009 (TAB) and characters with general category "Zs" (space separators).

Note: There are several ICU whitespace functions; please see the uchar.h file documentation for a detailed comparison.

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a "blank"

Stable
  ICU 2.6

## ◆ u_iscntrl()

U_CAPI UBool u_iscntrl | ( | UChar32 | c | ) |

Determines whether the specified code point is a control character (as defined by this function).

A control character is one of the following:

- ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
- U_CONTROL_CHAR (Cc)
- U_FORMAT_CHAR (Cf)
- U_LINE_SEPARATOR (Zl)
- U_PARAGRAPH_SEPARATOR (Zp)

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a control character

See also
  UCHAR_DEFAULT_IGNORABLE_CODE_POINT
  u_isprint

Stable
  ICU 2.0

## ◆ u_isdefined()

U_CAPI UBool u_isdefined | ( | UChar32 | c | ) |

Determines whether the specified code point is "defined", which usually means that it is assigned a character.

True for general categories other than "Cn" (other, not assigned), i.e., true for all code points mentioned in UnicodeData.txt.

Note that non-character code points (e.g., U+FDD0) are not "defined" (they are Cn), but surrogate code points are "defined" (Cs).

Same as java.lang.Character.isDefined().

Parameters

  c | the code point to be tested

Returns
  true if the code point is assigned a character

See also
  u_isdigit
  u_isalpha
  u_isalnum
  u_isupper
  u_islower
  u_istitle

Stable
  ICU 2.0

## ◆ u_isdigit()

U_CAPI UBool u_isdigit | ( | UChar32 | c | ) |

Determines whether the specified code point is a digit character according to Java.

True for characters with general category "Nd" (decimal digit numbers). Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal.

Same as java.lang.Character.isDigit().

In addition to being equivalent to a Java function, this also serves as a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a digit character according to Character.isDigit()

Stable
  ICU 2.0

## ◆ u_isgraph()

U_CAPI UBool u_isgraph | ( | UChar32 | c | ) |

Determines whether the specified code point is a "graphic" character (printable, excluding spaces).

true for all characters except those with general categories "Cc" (control codes), "Cf" (format controls), "Cs" (surrogates), "Cn" (unassigned), and "Z" (separators).

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a "graphic" character

Stable
  ICU 2.6

## ◆ u_isIDIgnorable()

U_CAPI UBool u_isIDIgnorable | ( | UChar32 | c | ) |

Determines if the specified character should be regarded as an ignorable character in an identifier, according to Java.

True for characters with general category "Cf" (format controls) as well as non-whitespace ISO controls (U+0000..U+0008, U+000E..U+001B, U+007F..U+009F).

Same as java.lang.Character.isIdentifierIgnorable().

Note that Unicode just recommends to ignore Cf (format controls).

Parameters

  c | the code point to be tested

Returns
  true if the code point is ignorable in identifiers according to Java

See also
  UCHAR_DEFAULT_IGNORABLE_CODE_POINT
  u_isIDStart
  u_isIDPart

Stable
  ICU 2.0

## ◆ u_isIDPart()

U_CAPI UBool u_isIDPart | ( | UChar32 | c | ) |

Determines if the specified character is permissible as a non-initial character of an identifier according to UAX #31 Unicode Identifier and Pattern Syntax.

Same as Unicode ID_Continue (UCHAR_ID_CONTINUE).

Parameters

  c | the code point to be tested

Returns
  true if the code point may occur as a non-initial character of an identifier

See also
  UCHAR_ID_CONTINUE
  u_isIDStart
  u_isIDIgnorable

Stable
  ICU 2.0

## ◆ u_isIDStart()

U_CAPI UBool u_isIDStart | ( | UChar32 | c | ) |

Determines if the specified character is permissible as the first character in an identifier according to UAX #31 Unicode Identifier and Pattern Syntax.

Same as Unicode ID_Start (UCHAR_ID_START).

Parameters

  c | the code point to be tested

Returns
  true if the code point may start an identifier

See also
  UCHAR_ID_START
  u_isalpha
  u_isIDPart

Stable
  ICU 2.0

## ◆ u_isISOControl()

U_CAPI UBool u_isISOControl | ( | UChar32 | c | ) |

Determines whether the specified code point is an ISO control code.

True for U+0000..U+001f and U+007f..U+009f (general category "Cc").

Same as java.lang.Character.isISOControl().

Parameters

  c | the code point to be tested

Returns
  true if the code point is an ISO control code

See also
  u_iscntrl

Stable
  ICU 2.6

## ◆ u_isJavaIDPart()

U_CAPI UBool u_isJavaIDPart | ( | UChar32 | c | ) |

Determines if the specified character is permissible in a Java identifier.

In addition to u_isIDPart(c), true for characters with general category "Sc" (currency symbols).

Same as java.lang.Character.isJavaIdentifierPart().

Parameters

  c | the code point to be tested

Returns
  true if the code point may occur in a Java identifier

See also
  u_isIDIgnorable
  u_isJavaIDStart
  u_isalpha
  u_isdigit
  u_isIDPart

Stable
  ICU 2.0

## ◆ u_isJavaIDStart()

U_CAPI UBool u_isJavaIDStart | ( | UChar32 | c | ) |

Determines if the specified character is permissible as the first character in a Java identifier.

In addition to u_isIDStart(c), true for characters with general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).

Same as java.lang.Character.isJavaIdentifierStart().

Parameters

  c | the code point to be tested

Returns
  true if the code point may start a Java identifier

See also
  u_isJavaIDPart
  u_isalpha
  u_isIDStart

Stable
  ICU 2.0

## ◆ u_isJavaSpaceChar()

U_CAPI UBool u_isJavaSpaceChar | ( | UChar32 | c | ) |

Determine if the specified code point is a space character according to Java.

True for characters with general categories "Z" (separators), which does not include control codes (e.g., TAB or Line Feed).

Same as java.lang.Character.isSpaceChar().

Note: There are several ICU whitespace functions; please see the uchar.h file documentation for a detailed comparison.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a space character according to Character.isSpaceChar()

See also
  u_isspace
  u_isWhitespace
  u_isUWhiteSpace

Stable
  ICU 2.6

## ◆ u_islower()

U_CAPI UBool u_islower | ( | UChar32 | c | ) |

Determines whether the specified code point has the general category "Ll" (lowercase letter).

Same as java.lang.Character.isLowerCase().

This misses some characters that are also lowercase but have a different general category value. In order to include those, use UCHAR_LOWERCASE.

In addition to being equivalent to a Java function, this also serves as a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is an Ll lowercase letter

See also
  UCHAR_LOWERCASE
  u_isupper
  u_istitle

Stable
  ICU 2.0

## ◆ u_isMirrored()

U_CAPI UBool u_isMirrored | ( | UChar32 | c | ) |

Determines whether the code point has the Bidi_Mirrored property.

This property is set for characters that are commonly used in Right-To-Left contexts and need to be displayed with a "mirrored" glyph.

Same as java.lang.Character.isMirrored(). Same as UCHAR_BIDI_MIRRORED

Parameters

  c | the code point to be tested

Returns
  true if the character has the Bidi_Mirrored property

See also
  UCHAR_BIDI_MIRRORED

Stable
  ICU 2.0

## ◆ u_isprint()

U_CAPI UBool u_isprint | ( | UChar32 | c | ) |

Determines whether the specified code point is a printable character.

True for general categories other than "C" (controls).

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a printable character

See also
  UCHAR_DEFAULT_IGNORABLE_CODE_POINT
  u_iscntrl

Stable
  ICU 2.0

## ◆ u_ispunct()

U_CAPI UBool u_ispunct | ( | UChar32 | c | ) |

Determines whether the specified code point is a punctuation character.

True for characters with general categories "P" (punctuation).

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a punctuation character

Stable
  ICU 2.6

## ◆ u_isspace()

U_CAPI UBool u_isspace | ( | UChar32 | c | ) |

Determines if the specified character is a space character or not.

Note: There are several ICU whitespace functions; please see the uchar.h file documentation for a detailed comparison.

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the character to be tested

Returns
  true if the character is a space character; false otherwise.

See also
  u_isJavaSpaceChar
  u_isWhitespace
  u_isUWhiteSpace

Stable
  ICU 2.0

## ◆ u_istitle()

U_CAPI UBool u_istitle | ( | UChar32 | c | ) |

Determines whether the specified code point is a titlecase letter.

True for general category "Lt" (titlecase letter).

Same as java.lang.Character.isTitleCase().

Parameters

  c | the code point to be tested

Returns
  true if the code point is an Lt titlecase letter

See also
  u_isupper
  u_islower
  u_totitle

Stable
  ICU 2.0

## ◆ u_isUAlphabetic()

U_CAPI UBool u_isUAlphabetic | ( | UChar32 | c | ) |

Check if a code point has the Alphabetic Unicode property.

Same as u_hasBinaryProperty(c, UCHAR_ALPHABETIC). This is different from u_isalpha!

Parameters

  c | Code point to test

Returns
  true if the code point has the Alphabetic Unicode property, false otherwise

See also
  UCHAR_ALPHABETIC
  u_isalpha
  u_hasBinaryProperty

Stable
  ICU 2.1

## ◆ u_isULowercase()

U_CAPI UBool u_isULowercase | ( | UChar32 | c | ) |

Check if a code point has the Lowercase Unicode property.

Same as u_hasBinaryProperty(c, UCHAR_LOWERCASE). This is different from u_islower!

Parameters

  c | Code point to test

Returns
  true if the code point has the Lowercase Unicode property, false otherwise

See also
  UCHAR_LOWERCASE
  u_islower
  u_hasBinaryProperty

Stable
  ICU 2.1

## ◆ u_isupper()

U_CAPI UBool u_isupper | ( | UChar32 | c | ) |

Determines whether the specified code point has the general category "Lu" (uppercase letter).

Same as java.lang.Character.isUpperCase().

This misses some characters that are also uppercase but have a different general category value. In order to include those, use UCHAR_UPPERCASE.

In addition to being equivalent to a Java function, this also serves as a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is an Lu uppercase letter

See also
  UCHAR_UPPERCASE
  u_islower
  u_istitle
  u_tolower

Stable
  ICU 2.0

## ◆ u_isUUppercase()

U_CAPI UBool u_isUUppercase | ( | UChar32 | c | ) |

Check if a code point has the Uppercase Unicode property.

Same as u_hasBinaryProperty(c, UCHAR_UPPERCASE). This is different from u_isupper!

Parameters

  c | Code point to test

Returns
  true if the code point has the Uppercase Unicode property, false otherwise

See also
  UCHAR_UPPERCASE
  u_isupper
  u_hasBinaryProperty

Stable
  ICU 2.1

## ◆ u_isUWhiteSpace()

U_CAPI UBool u_isUWhiteSpace | ( | UChar32 | c | ) |

Check if a code point has the White_Space Unicode property.

Same as u_hasBinaryProperty(c, UCHAR_WHITE_SPACE). This is different from both u_isspace and u_isWhitespace!

Note: There are several ICU whitespace functions; please see the uchar.h file documentation for a detailed comparison.

Parameters

  c | Code point to test

Returns
  true if the code point has the White_Space Unicode property, false otherwise.

See also
  UCHAR_WHITE_SPACE
  u_isWhitespace
  u_isspace
  u_isJavaSpaceChar
  u_hasBinaryProperty

Stable
  ICU 2.1

## ◆ u_isWhitespace()

U_CAPI UBool u_isWhitespace | ( | UChar32 | c | ) |

Determines if the specified code point is a whitespace character according to Java/ICU.

A character is considered to be a Java whitespace character if and only if it satisfies one of the following criteria:

- It is a Unicode Separator character (categories "Z" = "Zs" or "Zl" or "Zp"), but is not also a non-breaking space (U+00A0 NBSP or U+2007 Figure Space or U+202F Narrow NBSP).
- It is U+0009 HORIZONTAL TABULATION.
- It is U+000A LINE FEED.
- It is U+000B VERTICAL TABULATION.
- It is U+000C FORM FEED.
- It is U+000D CARRIAGE RETURN.
- It is U+001C FILE SEPARATOR.
- It is U+001D GROUP SEPARATOR.
- It is U+001E RECORD SEPARATOR.
- It is U+001F UNIT SEPARATOR.

This API tries to sync with the semantics of Java's java.lang.Character.isWhitespace(), but it may not return the exact same results because of the Unicode version difference.

Note: Unicode 4.0.1 changed U+200B ZERO WIDTH SPACE from a Space Separator (Zs) to a Format Control (Cf). Since then, isWhitespace(0x200b) returns false. See http://www.unicode.org/versions/Unicode4.0.1/

Note: There are several ICU whitespace functions; please see the uchar.h file documentation for a detailed comparison.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a whitespace character according to Java/ICU

See also
  u_isspace
  u_isJavaSpaceChar
  u_isUWhiteSpace

Stable
  ICU 2.0

## ◆ u_isxdigit()

U_CAPI UBool u_isxdigit | ( | UChar32 | c | ) |

Determines whether the specified code point is a hexadecimal digit.

This is equivalent to u_digit(c, 16)>=0. True for characters with general category "Nd" (decimal digit numbers) as well as Latin letters a-f and A-F in both ASCII and Fullwidth ASCII. (That is, for letters with code points 0041..0046, 0061..0066, FF21..FF26, FF41..FF46.)

In order to narrow the definition of hexadecimal digits to only ASCII characters, use (c<=0x7f && u_isxdigit(c)).

This is a C/POSIX migration function. See the comments about C/POSIX character classification functions in the documentation at the top of this header file.

Parameters

  c | the code point to be tested

Returns
  true if the code point is a hexadecimal digit

Stable
  ICU 2.6

## ◆ u_stringHasBinaryProperty()

U_CAPI UBool u_stringHasBinaryProperty | ( | const UChar * | s,
|  | int32_t | length,
|  | UProperty | which )

Returns true if the property is true for the string.

Same as u_hasBinaryProperty(single code point, which) if the string contains exactly one code point.

Most properties apply only to single code points. UTS #51 Unicode Emoji defines several properties of strings.

Parameters

  s | String to test.
  length | Length of the string, or negative if NUL-terminated.
  which | UProperty selector constant, identifies which binary property to check. Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT.

Returns
  true or false according to the binary Unicode property value for the string. Also false if 'which' is out of bounds or if the Unicode version does not have data for the property at all.

See also
  UProperty
  u_hasBinaryProperty
  u_getBinaryPropertySet
  u_getIntPropertyValue
  u_getUnicodeVersion

Stable
  ICU 70

## ◆ u_tolower()

U_CAPI UChar32 u_tolower | ( | UChar32 | c | ) |

The given character is mapped to its lowercase equivalent according to UnicodeData.txt; if the character has no lowercase equivalent, the character itself is returned.

Same as java.lang.Character.toLowerCase().

This function only returns the simple, single-code point case mapping. Full case mappings should be used whenever possible because they produce better results by working on whole strings. They take into account the string context and the language and can map to a result string with a different length as appropriate. Full case mappings are applied by the string case mapping functions, see ustring.h and the UnicodeString class. See also the User Guide chapter on C/POSIX migration: https://unicode-org.github.io/icu/userguide/icu/posix#case-mappings

Parameters

  c | the code point to be mapped

Returns
  the Simple_Lowercase_Mapping of the code point, if any; otherwise the code point itself.

Stable
  ICU 2.0

## ◆ u_totitle()

U_CAPI UChar32 u_totitle | ( | UChar32 | c | ) |

The given character is mapped to its titlecase equivalent according to UnicodeData.txt; if none is defined, the character itself is returned.

Same as java.lang.Character.toTitleCase().

This function only returns the simple, single-code point case mapping. Full case mappings should be used whenever possible because they produce better results by working on whole strings. They take into account the string context and the language and can map to a result string with a different length as appropriate. Full case mappings are applied by the string case mapping functions, see ustring.h and the UnicodeString class. See also the User Guide chapter on C/POSIX migration: https://unicode-org.github.io/icu/userguide/icu/posix#case-mappings

Parameters

  c | the code point to be mapped

Returns
  the Simple_Titlecase_Mapping of the code point, if any; otherwise the code point itself.

Stable
  ICU 2.0

## ◆ u_toupper()

U_CAPI UChar32 u_toupper | ( | UChar32 | c | ) |

The given character is mapped to its uppercase equivalent according to UnicodeData.txt; if the character has no uppercase equivalent, the character itself is returned.

Same as java.lang.Character.toUpperCase().

This function only returns the simple, single-code point case mapping. Full case mappings should be used whenever possible because they produce better results by working on whole strings. They take into account the string context and the language and can map to a result string with a different length as appropriate. Full case mappings are applied by the string case mapping functions, see ustring.h and the UnicodeString class. See also the User Guide chapter on C/POSIX migration: https://unicode-org.github.io/icu/userguide/icu/posix#case-mappings

Parameters

  c | the code point to be mapped

Returns
  the Simple_Uppercase_Mapping of the code point, if any; otherwise the code point itself.

Stable
  ICU 2.0

## ◆ ublock_getCode()

U_CAPI UBlockCode ublock_getCode | ( | UChar32 | c | ) |

Returns the Unicode allocation block that contains the character.

Parameters

  c | the code point to be tested

Returns
  the block value (UBlockCode) for c

See also
  UBlockCode

Stable
  ICU 2.0