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      1 /*
      2 **********************************************************************
      3 *   Copyright (C) 1997-2009, International Business Machines
      4 *   Corporation and others.  All Rights Reserved.
      5 **********************************************************************
      6 *
      7 * File UCHAR.H
      8 *
      9 * Modification History:
     10 *
     11 *   Date        Name        Description
     12 *   04/02/97    aliu        Creation.
     13 *   03/29/99    helena      Updated for C APIs.
     14 *   4/15/99     Madhu       Updated for C Implementation and Javadoc
     15 *   5/20/99     Madhu       Added the function u_getVersion()
     16 *   8/19/1999   srl         Upgraded scripts to Unicode 3.0
     17 *   8/27/1999   schererm    UCharDirection constants: U_...
     18 *   11/11/1999  weiv        added u_isalnum(), cleaned comments
     19 *   01/11/2000  helena      Renamed u_getVersion to u_getUnicodeVersion().
     20 ******************************************************************************
     21 */
     22 
     23 #ifndef UCHAR_H
     24 #define UCHAR_H
     25 
     26 #include "unicode/utypes.h"
     27 
     28 U_CDECL_BEGIN
     29 
     30 /*==========================================================================*/
     31 /* Unicode version number                                                   */
     32 /*==========================================================================*/
     33 /**
     34  * Unicode version number, default for the current ICU version.
     35  * The actual Unicode Character Database (UCD) data is stored in uprops.dat
     36  * and may be generated from UCD files from a different Unicode version.
     37  * Call u_getUnicodeVersion to get the actual Unicode version of the data.
     38  *
     39  * @see u_getUnicodeVersion
     40  * @stable ICU 2.0
     41  */
     42 #define U_UNICODE_VERSION "5.1"
     43 
     44 /**
     45  * \file
     46  * \brief C API: Unicode Properties
     47  *
     48  * This C API provides low-level access to the Unicode Character Database.
     49  * In addition to raw property values, some convenience functions calculate
     50  * derived properties, for example for Java-style programming.
     51  *
     52  * Unicode assigns each code point (not just assigned character) values for
     53  * many properties.
     54  * Most of them are simple boolean flags, or constants from a small enumerated list.
     55  * For some properties, values are strings or other relatively more complex types.
     56  *
     57  * For more information see
     58  * "About the Unicode Character Database" (http://www.unicode.org/ucd/)
     59  * and the ICU User Guide chapter on Properties (http://icu-project.org/userguide/properties.html).
     60  *
     61  * Many functions are designed to match java.lang.Character functions.
     62  * See the individual function documentation,
     63  * and see the JDK 1.4 java.lang.Character documentation
     64  * at http://java.sun.com/j2se/1.4/docs/api/java/lang/Character.html
     65  *
     66  * There are also functions that provide easy migration from C/POSIX functions
     67  * like isblank(). Their use is generally discouraged because the C/POSIX
     68  * standards do not define their semantics beyond the ASCII range, which means
     69  * that different implementations exhibit very different behavior.
     70  * Instead, Unicode properties should be used directly.
     71  *
     72  * There are also only a few, broad C/POSIX character classes, and they tend
     73  * to be used for conflicting purposes. For example, the "isalpha()" class
     74  * is sometimes used to determine word boundaries, while a more sophisticated
     75  * approach would at least distinguish initial letters from continuation
     76  * characters (the latter including combining marks).
     77  * (In ICU, BreakIterator is the most sophisticated API for word boundaries.)
     78  * Another example: There is no "istitle()" class for titlecase characters.
     79  *
     80  * ICU 3.4 and later provides API access for all twelve C/POSIX character classes.
     81  * ICU implements them according to the Standard Recommendations in
     82  * Annex C: Compatibility Properties of UTS #18 Unicode Regular Expressions
     83  * (http://www.unicode.org/reports/tr18/#Compatibility_Properties).
     84  *
     85  * API access for C/POSIX character classes is as follows:
     86  * - alpha:     u_isUAlphabetic(c) or u_hasBinaryProperty(c, UCHAR_ALPHABETIC)
     87  * - lower:     u_isULowercase(c) or u_hasBinaryProperty(c, UCHAR_LOWERCASE)
     88  * - upper:     u_isUUppercase(c) or u_hasBinaryProperty(c, UCHAR_UPPERCASE)
     89  * - punct:     u_ispunct(c)
     90  * - digit:     u_isdigit(c) or u_charType(c)==U_DECIMAL_DIGIT_NUMBER
     91  * - xdigit:    u_isxdigit(c) or u_hasBinaryProperty(c, UCHAR_POSIX_XDIGIT)
     92  * - alnum:     u_hasBinaryProperty(c, UCHAR_POSIX_ALNUM)
     93  * - space:     u_isUWhiteSpace(c) or u_hasBinaryProperty(c, UCHAR_WHITE_SPACE)
     94  * - blank:     u_isblank(c) or u_hasBinaryProperty(c, UCHAR_POSIX_BLANK)
     95  * - cntrl:     u_charType(c)==U_CONTROL_CHAR
     96  * - graph:     u_hasBinaryProperty(c, UCHAR_POSIX_GRAPH)
     97  * - print:     u_hasBinaryProperty(c, UCHAR_POSIX_PRINT)
     98  *
     99  * Note: Some of the u_isxyz() functions in uchar.h predate, and do not match,
    100  * the Standard Recommendations in UTS #18. Instead, they match Java
    101  * functions according to their API documentation.
    102  *
    103  * \htmlonly
    104  * The C/POSIX character classes are also available in UnicodeSet patterns,
    105  * using patterns like [:graph:] or \p{graph}.
    106  * \endhtmlonly
    107  *
    108  * Note: There are several ICU whitespace functions.
    109  * Comparison:
    110  * - u_isUWhiteSpace=UCHAR_WHITE_SPACE: Unicode White_Space property;
    111  *       most of general categories "Z" (separators) + most whitespace ISO controls
    112  *       (including no-break spaces, but excluding IS1..IS4 and ZWSP)
    113  * - u_isWhitespace: Java isWhitespace; Z + whitespace ISO controls but excluding no-break spaces
    114  * - u_isJavaSpaceChar: Java isSpaceChar; just Z (including no-break spaces)
    115  * - u_isspace: Z + whitespace ISO controls (including no-break spaces)
    116  * - u_isblank: "horizontal spaces" = TAB + Zs - ZWSP
    117  */
    118 
    119 /**
    120  * Constants.
    121  */
    122 
    123 /** The lowest Unicode code point value. Code points are non-negative. @stable ICU 2.0 */
    124 #define UCHAR_MIN_VALUE 0
    125 
    126 /**
    127  * The highest Unicode code point value (scalar value) according to
    128  * The Unicode Standard. This is a 21-bit value (20.1 bits, rounded up).
    129  * For a single character, UChar32 is a simple type that can hold any code point value.
    130  *
    131  * @see UChar32
    132  * @stable ICU 2.0
    133  */
    134 #define UCHAR_MAX_VALUE 0x10ffff
    135 
    136 /**
    137  * Get a single-bit bit set (a flag) from a bit number 0..31.
    138  * @stable ICU 2.1
    139  */
    140 #define U_MASK(x) ((uint32_t)1<<(x))
    141 
    142 /*
    143  * !! Note: Several comments in this file are machine-read by the
    144  * genpname tool.  These comments describe the correspondence between
    145  * icu enum constants and UCD entities.  Do not delete them.  Update
    146  * these comments as needed.
    147  *
    148  * Any comment of the form "/ *[name]* /" (spaces added) is such
    149  * a comment.
    150  *
    151  * The U_JG_* and U_GC_*_MASK constants are matched by their symbolic
    152  * name, which must match PropertyValueAliases.txt.
    153  */
    154 
    155 /**
    156  * Selection constants for Unicode properties.
    157  * These constants are used in functions like u_hasBinaryProperty to select
    158  * one of the Unicode properties.
    159  *
    160  * The properties APIs are intended to reflect Unicode properties as defined
    161  * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
    162  * For details about the properties see http://www.unicode.org/ucd/ .
    163  * For names of Unicode properties see the UCD file PropertyAliases.txt.
    164  *
    165  * Important: If ICU is built with UCD files from Unicode versions below, e.g., 3.2,
    166  * then properties marked with "new in Unicode 3.2" are not or not fully available.
    167  * Check u_getUnicodeVersion to be sure.
    168  *
    169  * @see u_hasBinaryProperty
    170  * @see u_getIntPropertyValue
    171  * @see u_getUnicodeVersion
    172  * @stable ICU 2.1
    173  */
    174 typedef enum UProperty {
    175     /*  See note !!.  Comments of the form "Binary property Dash",
    176         "Enumerated property Script", "Double property Numeric_Value",
    177         and "String property Age" are read by genpname. */
    178 
    179     /*  Note: Place UCHAR_ALPHABETIC before UCHAR_BINARY_START so that
    180     debuggers display UCHAR_ALPHABETIC as the symbolic name for 0,
    181     rather than UCHAR_BINARY_START.  Likewise for other *_START
    182     identifiers. */
    183 
    184     /** Binary property Alphabetic. Same as u_isUAlphabetic, different from u_isalpha.
    185         Lu+Ll+Lt+Lm+Lo+Nl+Other_Alphabetic @stable ICU 2.1 */
    186     UCHAR_ALPHABETIC=0,
    187     /** First constant for binary Unicode properties. @stable ICU 2.1 */
    188     UCHAR_BINARY_START=UCHAR_ALPHABETIC,
    189     /** Binary property ASCII_Hex_Digit. 0-9 A-F a-f @stable ICU 2.1 */
    190     UCHAR_ASCII_HEX_DIGIT=1,
    191     /** Binary property Bidi_Control.
    192         Format controls which have specific functions
    193         in the Bidi Algorithm. @stable ICU 2.1 */
    194     UCHAR_BIDI_CONTROL=2,
    195     /** Binary property Bidi_Mirrored.
    196         Characters that may change display in RTL text.
    197         Same as u_isMirrored.
    198         See Bidi Algorithm, UTR 9. @stable ICU 2.1 */
    199     UCHAR_BIDI_MIRRORED=3,
    200     /** Binary property Dash. Variations of dashes. @stable ICU 2.1 */
    201     UCHAR_DASH=4,
    202     /** Binary property Default_Ignorable_Code_Point (new in Unicode 3.2).
    203         Ignorable in most processing.
    204         <2060..206F, FFF0..FFFB, E0000..E0FFF>+Other_Default_Ignorable_Code_Point+(Cf+Cc+Cs-White_Space) @stable ICU 2.1 */
    205     UCHAR_DEFAULT_IGNORABLE_CODE_POINT=5,
    206     /** Binary property Deprecated (new in Unicode 3.2).
    207         The usage of deprecated characters is strongly discouraged. @stable ICU 2.1 */
    208     UCHAR_DEPRECATED=6,
    209     /** Binary property Diacritic. Characters that linguistically modify
    210         the meaning of another character to which they apply. @stable ICU 2.1 */
    211     UCHAR_DIACRITIC=7,
    212     /** Binary property Extender.
    213         Extend the value or shape of a preceding alphabetic character,
    214         e.g., length and iteration marks. @stable ICU 2.1 */
    215     UCHAR_EXTENDER=8,
    216     /** Binary property Full_Composition_Exclusion.
    217         CompositionExclusions.txt+Singleton Decompositions+
    218         Non-Starter Decompositions. @stable ICU 2.1 */
    219     UCHAR_FULL_COMPOSITION_EXCLUSION=9,
    220     /** Binary property Grapheme_Base (new in Unicode 3.2).
    221         For programmatic determination of grapheme cluster boundaries.
    222         [0..10FFFF]-Cc-Cf-Cs-Co-Cn-Zl-Zp-Grapheme_Link-Grapheme_Extend-CGJ @stable ICU 2.1 */
    223     UCHAR_GRAPHEME_BASE=10,
    224     /** Binary property Grapheme_Extend (new in Unicode 3.2).
    225         For programmatic determination of grapheme cluster boundaries.
    226         Me+Mn+Mc+Other_Grapheme_Extend-Grapheme_Link-CGJ @stable ICU 2.1 */
    227     UCHAR_GRAPHEME_EXTEND=11,
    228     /** Binary property Grapheme_Link (new in Unicode 3.2).
    229         For programmatic determination of grapheme cluster boundaries. @stable ICU 2.1 */
    230     UCHAR_GRAPHEME_LINK=12,
    231     /** Binary property Hex_Digit.
    232         Characters commonly used for hexadecimal numbers. @stable ICU 2.1 */
    233     UCHAR_HEX_DIGIT=13,
    234     /** Binary property Hyphen. Dashes used to mark connections
    235         between pieces of words, plus the Katakana middle dot. @stable ICU 2.1 */
    236     UCHAR_HYPHEN=14,
    237     /** Binary property ID_Continue.
    238         Characters that can continue an identifier.
    239         DerivedCoreProperties.txt also says "NOTE: Cf characters should be filtered out."
    240         ID_Start+Mn+Mc+Nd+Pc @stable ICU 2.1 */
    241     UCHAR_ID_CONTINUE=15,
    242     /** Binary property ID_Start.
    243         Characters that can start an identifier.
    244         Lu+Ll+Lt+Lm+Lo+Nl @stable ICU 2.1 */
    245     UCHAR_ID_START=16,
    246     /** Binary property Ideographic.
    247         CJKV ideographs. @stable ICU 2.1 */
    248     UCHAR_IDEOGRAPHIC=17,
    249     /** Binary property IDS_Binary_Operator (new in Unicode 3.2).
    250         For programmatic determination of
    251         Ideographic Description Sequences. @stable ICU 2.1 */
    252     UCHAR_IDS_BINARY_OPERATOR=18,
    253     /** Binary property IDS_Trinary_Operator (new in Unicode 3.2).
    254         For programmatic determination of
    255         Ideographic Description Sequences. @stable ICU 2.1 */
    256     UCHAR_IDS_TRINARY_OPERATOR=19,
    257     /** Binary property Join_Control.
    258         Format controls for cursive joining and ligation. @stable ICU 2.1 */
    259     UCHAR_JOIN_CONTROL=20,
    260     /** Binary property Logical_Order_Exception (new in Unicode 3.2).
    261         Characters that do not use logical order and
    262         require special handling in most processing. @stable ICU 2.1 */
    263     UCHAR_LOGICAL_ORDER_EXCEPTION=21,
    264     /** Binary property Lowercase. Same as u_isULowercase, different from u_islower.
    265         Ll+Other_Lowercase @stable ICU 2.1 */
    266     UCHAR_LOWERCASE=22,
    267     /** Binary property Math. Sm+Other_Math @stable ICU 2.1 */
    268     UCHAR_MATH=23,
    269     /** Binary property Noncharacter_Code_Point.
    270         Code points that are explicitly defined as illegal
    271         for the encoding of characters. @stable ICU 2.1 */
    272     UCHAR_NONCHARACTER_CODE_POINT=24,
    273     /** Binary property Quotation_Mark. @stable ICU 2.1 */
    274     UCHAR_QUOTATION_MARK=25,
    275     /** Binary property Radical (new in Unicode 3.2).
    276         For programmatic determination of
    277         Ideographic Description Sequences. @stable ICU 2.1 */
    278     UCHAR_RADICAL=26,
    279     /** Binary property Soft_Dotted (new in Unicode 3.2).
    280         Characters with a "soft dot", like i or j.
    281         An accent placed on these characters causes
    282         the dot to disappear. @stable ICU 2.1 */
    283     UCHAR_SOFT_DOTTED=27,
    284     /** Binary property Terminal_Punctuation.
    285         Punctuation characters that generally mark
    286         the end of textual units. @stable ICU 2.1 */
    287     UCHAR_TERMINAL_PUNCTUATION=28,
    288     /** Binary property Unified_Ideograph (new in Unicode 3.2).
    289         For programmatic determination of
    290         Ideographic Description Sequences. @stable ICU 2.1 */
    291     UCHAR_UNIFIED_IDEOGRAPH=29,
    292     /** Binary property Uppercase. Same as u_isUUppercase, different from u_isupper.
    293         Lu+Other_Uppercase @stable ICU 2.1 */
    294     UCHAR_UPPERCASE=30,
    295     /** Binary property White_Space.
    296         Same as u_isUWhiteSpace, different from u_isspace and u_isWhitespace.
    297         Space characters+TAB+CR+LF-ZWSP-ZWNBSP @stable ICU 2.1 */
    298     UCHAR_WHITE_SPACE=31,
    299     /** Binary property XID_Continue.
    300         ID_Continue modified to allow closure under
    301         normalization forms NFKC and NFKD. @stable ICU 2.1 */
    302     UCHAR_XID_CONTINUE=32,
    303     /** Binary property XID_Start. ID_Start modified to allow
    304         closure under normalization forms NFKC and NFKD. @stable ICU 2.1 */
    305     UCHAR_XID_START=33,
    306     /** Binary property Case_Sensitive. Either the source of a case
    307         mapping or _in_ the target of a case mapping. Not the same as
    308         the general category Cased_Letter. @stable ICU 2.6 */
    309    UCHAR_CASE_SENSITIVE=34,
    310     /** Binary property STerm (new in Unicode 4.0.1).
    311         Sentence Terminal. Used in UAX #29: Text Boundaries
    312         (http://www.unicode.org/reports/tr29/)
    313         @stable ICU 3.0 */
    314     UCHAR_S_TERM=35,
    315     /** Binary property Variation_Selector (new in Unicode 4.0.1).
    316         Indicates all those characters that qualify as Variation Selectors.
    317         For details on the behavior of these characters,
    318         see StandardizedVariants.html and 15.6 Variation Selectors.
    319         @stable ICU 3.0 */
    320     UCHAR_VARIATION_SELECTOR=36,
    321     /** Binary property NFD_Inert.
    322         ICU-specific property for characters that are inert under NFD,
    323         i.e., they do not interact with adjacent characters.
    324         Used for example in normalizing transforms in incremental mode
    325         to find the boundary of safely normalizable text despite possible
    326         text additions.
    327 
    328         There is one such property per normalization form.
    329         These properties are computed as follows - an inert character is:
    330         a) unassigned, or ALL of the following:
    331         b) of combining class 0.
    332         c) not decomposed by this normalization form.
    333         AND if NFC or NFKC,
    334         d) can never compose with a previous character.
    335         e) can never compose with a following character.
    336         f) can never change if another character is added.
    337            Example: a-breve might satisfy all but f, but if you
    338            add an ogonek it changes to a-ogonek + breve
    339 
    340         See also com.ibm.text.UCD.NFSkippable in the ICU4J repository,
    341         and icu/source/common/unormimp.h .
    342         @stable ICU 3.0 */
    343     UCHAR_NFD_INERT=37,
    344     /** Binary property NFKD_Inert.
    345         ICU-specific property for characters that are inert under NFKD,
    346         i.e., they do not interact with adjacent characters.
    347         Used for example in normalizing transforms in incremental mode
    348         to find the boundary of safely normalizable text despite possible
    349         text additions.
    350         @see UCHAR_NFD_INERT
    351         @stable ICU 3.0 */
    352     UCHAR_NFKD_INERT=38,
    353     /** Binary property NFC_Inert.
    354         ICU-specific property for characters that are inert under NFC,
    355         i.e., they do not interact with adjacent characters.
    356         Used for example in normalizing transforms in incremental mode
    357         to find the boundary of safely normalizable text despite possible
    358         text additions.
    359         @see UCHAR_NFD_INERT
    360         @stable ICU 3.0 */
    361     UCHAR_NFC_INERT=39,
    362     /** Binary property NFKC_Inert.
    363         ICU-specific property for characters that are inert under NFKC,
    364         i.e., they do not interact with adjacent characters.
    365         Used for example in normalizing transforms in incremental mode
    366         to find the boundary of safely normalizable text despite possible
    367         text additions.
    368         @see UCHAR_NFD_INERT
    369         @stable ICU 3.0 */
    370     UCHAR_NFKC_INERT=40,
    371     /** Binary Property Segment_Starter.
    372         ICU-specific property for characters that are starters in terms of
    373         Unicode normalization and combining character sequences.
    374         They have ccc=0 and do not occur in non-initial position of the
    375         canonical decomposition of any character
    376         (like " in NFD(a-umlaut) and a Jamo T in an NFD(Hangul LVT)).
    377         ICU uses this property for segmenting a string for generating a set of
    378         canonically equivalent strings, e.g. for canonical closure while
    379         processing collation tailoring rules.
    380         @stable ICU 3.0 */
    381     UCHAR_SEGMENT_STARTER=41,
    382     /** Binary property Pattern_Syntax (new in Unicode 4.1).
    383         See UAX #31 Identifier and Pattern Syntax
    384         (http://www.unicode.org/reports/tr31/)
    385         @stable ICU 3.4 */
    386     UCHAR_PATTERN_SYNTAX=42,
    387     /** Binary property Pattern_White_Space (new in Unicode 4.1).
    388         See UAX #31 Identifier and Pattern Syntax
    389         (http://www.unicode.org/reports/tr31/)
    390         @stable ICU 3.4 */
    391     UCHAR_PATTERN_WHITE_SPACE=43,
    392     /** Binary property alnum (a C/POSIX character class).
    393         Implemented according to the UTS #18 Annex C Standard Recommendation.
    394         See the uchar.h file documentation.
    395         @stable ICU 3.4 */
    396     UCHAR_POSIX_ALNUM=44,
    397     /** Binary property blank (a C/POSIX character class).
    398         Implemented according to the UTS #18 Annex C Standard Recommendation.
    399         See the uchar.h file documentation.
    400         @stable ICU 3.4 */
    401     UCHAR_POSIX_BLANK=45,
    402     /** Binary property graph (a C/POSIX character class).
    403         Implemented according to the UTS #18 Annex C Standard Recommendation.
    404         See the uchar.h file documentation.
    405         @stable ICU 3.4 */
    406     UCHAR_POSIX_GRAPH=46,
    407     /** Binary property print (a C/POSIX character class).
    408         Implemented according to the UTS #18 Annex C Standard Recommendation.
    409         See the uchar.h file documentation.
    410         @stable ICU 3.4 */
    411     UCHAR_POSIX_PRINT=47,
    412     /** Binary property xdigit (a C/POSIX character class).
    413         Implemented according to the UTS #18 Annex C Standard Recommendation.
    414         See the uchar.h file documentation.
    415         @stable ICU 3.4 */
    416     UCHAR_POSIX_XDIGIT=48,
    417     /** One more than the last constant for binary Unicode properties. @stable ICU 2.1 */
    418     UCHAR_BINARY_LIMIT=49,
    419 
    420     /** Enumerated property Bidi_Class.
    421         Same as u_charDirection, returns UCharDirection values. @stable ICU 2.2 */
    422     UCHAR_BIDI_CLASS=0x1000,
    423     /** First constant for enumerated/integer Unicode properties. @stable ICU 2.2 */
    424     UCHAR_INT_START=UCHAR_BIDI_CLASS,
    425     /** Enumerated property Block.
    426         Same as ublock_getCode, returns UBlockCode values. @stable ICU 2.2 */
    427     UCHAR_BLOCK=0x1001,
    428     /** Enumerated property Canonical_Combining_Class.
    429         Same as u_getCombiningClass, returns 8-bit numeric values. @stable ICU 2.2 */
    430     UCHAR_CANONICAL_COMBINING_CLASS=0x1002,
    431     /** Enumerated property Decomposition_Type.
    432         Returns UDecompositionType values. @stable ICU 2.2 */
    433     UCHAR_DECOMPOSITION_TYPE=0x1003,
    434     /** Enumerated property East_Asian_Width.
    435         See http://www.unicode.org/reports/tr11/
    436         Returns UEastAsianWidth values. @stable ICU 2.2 */
    437     UCHAR_EAST_ASIAN_WIDTH=0x1004,
    438     /** Enumerated property General_Category.
    439         Same as u_charType, returns UCharCategory values. @stable ICU 2.2 */
    440     UCHAR_GENERAL_CATEGORY=0x1005,
    441     /** Enumerated property Joining_Group.
    442         Returns UJoiningGroup values. @stable ICU 2.2 */
    443     UCHAR_JOINING_GROUP=0x1006,
    444     /** Enumerated property Joining_Type.
    445         Returns UJoiningType values. @stable ICU 2.2 */
    446     UCHAR_JOINING_TYPE=0x1007,
    447     /** Enumerated property Line_Break.
    448         Returns ULineBreak values. @stable ICU 2.2 */
    449     UCHAR_LINE_BREAK=0x1008,
    450     /** Enumerated property Numeric_Type.
    451         Returns UNumericType values. @stable ICU 2.2 */
    452     UCHAR_NUMERIC_TYPE=0x1009,
    453     /** Enumerated property Script.
    454         Same as uscript_getScript, returns UScriptCode values. @stable ICU 2.2 */
    455     UCHAR_SCRIPT=0x100A,
    456     /** Enumerated property Hangul_Syllable_Type, new in Unicode 4.
    457         Returns UHangulSyllableType values. @stable ICU 2.6 */
    458     UCHAR_HANGUL_SYLLABLE_TYPE=0x100B,
    459     /** Enumerated property NFD_Quick_Check.
    460         Returns UNormalizationCheckResult values. @stable ICU 3.0 */
    461     UCHAR_NFD_QUICK_CHECK=0x100C,
    462     /** Enumerated property NFKD_Quick_Check.
    463         Returns UNormalizationCheckResult values. @stable ICU 3.0 */
    464     UCHAR_NFKD_QUICK_CHECK=0x100D,
    465     /** Enumerated property NFC_Quick_Check.
    466         Returns UNormalizationCheckResult values. @stable ICU 3.0 */
    467     UCHAR_NFC_QUICK_CHECK=0x100E,
    468     /** Enumerated property NFKC_Quick_Check.
    469         Returns UNormalizationCheckResult values. @stable ICU 3.0 */
    470     UCHAR_NFKC_QUICK_CHECK=0x100F,
    471     /** Enumerated property Lead_Canonical_Combining_Class.
    472         ICU-specific property for the ccc of the first code point
    473         of the decomposition, or lccc(c)=ccc(NFD(c)[0]).
    474         Useful for checking for canonically ordered text;
    475         see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD .
    476         Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. @stable ICU 3.0 */
    477     UCHAR_LEAD_CANONICAL_COMBINING_CLASS=0x1010,
    478     /** Enumerated property Trail_Canonical_Combining_Class.
    479         ICU-specific property for the ccc of the last code point
    480         of the decomposition, or tccc(c)=ccc(NFD(c)[last]).
    481         Useful for checking for canonically ordered text;
    482         see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD .
    483         Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. @stable ICU 3.0 */
    484     UCHAR_TRAIL_CANONICAL_COMBINING_CLASS=0x1011,
    485     /** Enumerated property Grapheme_Cluster_Break (new in Unicode 4.1).
    486         Used in UAX #29: Text Boundaries
    487         (http://www.unicode.org/reports/tr29/)
    488         Returns UGraphemeClusterBreak values. @stable ICU 3.4 */
    489     UCHAR_GRAPHEME_CLUSTER_BREAK=0x1012,
    490     /** Enumerated property Sentence_Break (new in Unicode 4.1).
    491         Used in UAX #29: Text Boundaries
    492         (http://www.unicode.org/reports/tr29/)
    493         Returns USentenceBreak values. @stable ICU 3.4 */
    494     UCHAR_SENTENCE_BREAK=0x1013,
    495     /** Enumerated property Word_Break (new in Unicode 4.1).
    496         Used in UAX #29: Text Boundaries
    497         (http://www.unicode.org/reports/tr29/)
    498         Returns UWordBreakValues values. @stable ICU 3.4 */
    499     UCHAR_WORD_BREAK=0x1014,
    500     /** One more than the last constant for enumerated/integer Unicode properties. @stable ICU 2.2 */
    501     UCHAR_INT_LIMIT=0x1015,
    502 
    503     /** Bitmask property General_Category_Mask.
    504         This is the General_Category property returned as a bit mask.
    505         When used in u_getIntPropertyValue(c), same as U_MASK(u_charType(c)),
    506         returns bit masks for UCharCategory values where exactly one bit is set.
    507         When used with u_getPropertyValueName() and u_getPropertyValueEnum(),
    508         a multi-bit mask is used for sets of categories like "Letters".
    509         Mask values should be cast to uint32_t.
    510         @stable ICU 2.4 */
    511     UCHAR_GENERAL_CATEGORY_MASK=0x2000,
    512     /** First constant for bit-mask Unicode properties. @stable ICU 2.4 */
    513     UCHAR_MASK_START=UCHAR_GENERAL_CATEGORY_MASK,
    514     /** One more than the last constant for bit-mask Unicode properties. @stable ICU 2.4 */
    515     UCHAR_MASK_LIMIT=0x2001,
    516 
    517     /** Double property Numeric_Value.
    518         Corresponds to u_getNumericValue. @stable ICU 2.4 */
    519     UCHAR_NUMERIC_VALUE=0x3000,
    520     /** First constant for double Unicode properties. @stable ICU 2.4 */
    521     UCHAR_DOUBLE_START=UCHAR_NUMERIC_VALUE,
    522     /** One more than the last constant for double Unicode properties. @stable ICU 2.4 */
    523     UCHAR_DOUBLE_LIMIT=0x3001,
    524 
    525     /** String property Age.
    526         Corresponds to u_charAge. @stable ICU 2.4 */
    527     UCHAR_AGE=0x4000,
    528     /** First constant for string Unicode properties. @stable ICU 2.4 */
    529     UCHAR_STRING_START=UCHAR_AGE,
    530     /** String property Bidi_Mirroring_Glyph.
    531         Corresponds to u_charMirror. @stable ICU 2.4 */
    532     UCHAR_BIDI_MIRRORING_GLYPH=0x4001,
    533     /** String property Case_Folding.
    534         Corresponds to u_strFoldCase in ustring.h. @stable ICU 2.4 */
    535     UCHAR_CASE_FOLDING=0x4002,
    536     /** String property ISO_Comment.
    537         Corresponds to u_getISOComment. @stable ICU 2.4 */
    538     UCHAR_ISO_COMMENT=0x4003,
    539     /** String property Lowercase_Mapping.
    540         Corresponds to u_strToLower in ustring.h. @stable ICU 2.4 */
    541     UCHAR_LOWERCASE_MAPPING=0x4004,
    542     /** String property Name.
    543         Corresponds to u_charName. @stable ICU 2.4 */
    544     UCHAR_NAME=0x4005,
    545     /** String property Simple_Case_Folding.
    546         Corresponds to u_foldCase. @stable ICU 2.4 */
    547     UCHAR_SIMPLE_CASE_FOLDING=0x4006,
    548     /** String property Simple_Lowercase_Mapping.
    549         Corresponds to u_tolower. @stable ICU 2.4 */
    550     UCHAR_SIMPLE_LOWERCASE_MAPPING=0x4007,
    551     /** String property Simple_Titlecase_Mapping.
    552         Corresponds to u_totitle. @stable ICU 2.4 */
    553     UCHAR_SIMPLE_TITLECASE_MAPPING=0x4008,
    554     /** String property Simple_Uppercase_Mapping.
    555         Corresponds to u_toupper. @stable ICU 2.4 */
    556     UCHAR_SIMPLE_UPPERCASE_MAPPING=0x4009,
    557     /** String property Titlecase_Mapping.
    558         Corresponds to u_strToTitle in ustring.h. @stable ICU 2.4 */
    559     UCHAR_TITLECASE_MAPPING=0x400A,
    560     /** String property Unicode_1_Name.
    561         Corresponds to u_charName. @stable ICU 2.4 */
    562     UCHAR_UNICODE_1_NAME=0x400B,
    563     /** String property Uppercase_Mapping.
    564         Corresponds to u_strToUpper in ustring.h. @stable ICU 2.4 */
    565     UCHAR_UPPERCASE_MAPPING=0x400C,
    566     /** One more than the last constant for string Unicode properties. @stable ICU 2.4 */
    567     UCHAR_STRING_LIMIT=0x400D,
    568 
    569     /** Represents a nonexistent or invalid property or property value. @stable ICU 2.4 */
    570     UCHAR_INVALID_CODE = -1
    571 } UProperty;
    572 
    573 /**
    574  * Data for enumerated Unicode general category types.
    575  * See http://www.unicode.org/Public/UNIDATA/UnicodeData.html .
    576  * @stable ICU 2.0
    577  */
    578 typedef enum UCharCategory
    579 {
    580     /** See note !!.  Comments of the form "Cn" are read by genpname. */
    581 
    582     /** Non-category for unassigned and non-character code points. @stable ICU 2.0 */
    583     U_UNASSIGNED              = 0,
    584     /** Cn "Other, Not Assigned (no characters in [UnicodeData.txt] have this property)" (same as U_UNASSIGNED!) @stable ICU 2.0 */
    585     U_GENERAL_OTHER_TYPES     = 0,
    586     /** Lu @stable ICU 2.0 */
    587     U_UPPERCASE_LETTER        = 1,
    588     /** Ll @stable ICU 2.0 */
    589     U_LOWERCASE_LETTER        = 2,
    590     /** Lt @stable ICU 2.0 */
    591     U_TITLECASE_LETTER        = 3,
    592     /** Lm @stable ICU 2.0 */
    593     U_MODIFIER_LETTER         = 4,
    594     /** Lo @stable ICU 2.0 */
    595     U_OTHER_LETTER            = 5,
    596     /** Mn @stable ICU 2.0 */
    597     U_NON_SPACING_MARK        = 6,
    598     /** Me @stable ICU 2.0 */
    599     U_ENCLOSING_MARK          = 7,
    600     /** Mc @stable ICU 2.0 */
    601     U_COMBINING_SPACING_MARK  = 8,
    602     /** Nd @stable ICU 2.0 */
    603     U_DECIMAL_DIGIT_NUMBER    = 9,
    604     /** Nl @stable ICU 2.0 */
    605     U_LETTER_NUMBER           = 10,
    606     /** No @stable ICU 2.0 */
    607     U_OTHER_NUMBER            = 11,
    608     /** Zs @stable ICU 2.0 */
    609     U_SPACE_SEPARATOR         = 12,
    610     /** Zl @stable ICU 2.0 */
    611     U_LINE_SEPARATOR          = 13,
    612     /** Zp @stable ICU 2.0 */
    613     U_PARAGRAPH_SEPARATOR     = 14,
    614     /** Cc @stable ICU 2.0 */
    615     U_CONTROL_CHAR            = 15,
    616     /** Cf @stable ICU 2.0 */
    617     U_FORMAT_CHAR             = 16,
    618     /** Co @stable ICU 2.0 */
    619     U_PRIVATE_USE_CHAR        = 17,
    620     /** Cs @stable ICU 2.0 */
    621     U_SURROGATE               = 18,
    622     /** Pd @stable ICU 2.0 */
    623     U_DASH_PUNCTUATION        = 19,
    624     /** Ps @stable ICU 2.0 */
    625     U_START_PUNCTUATION       = 20,
    626     /** Pe @stable ICU 2.0 */
    627     U_END_PUNCTUATION         = 21,
    628     /** Pc @stable ICU 2.0 */
    629     U_CONNECTOR_PUNCTUATION   = 22,
    630     /** Po @stable ICU 2.0 */
    631     U_OTHER_PUNCTUATION       = 23,
    632     /** Sm @stable ICU 2.0 */
    633     U_MATH_SYMBOL             = 24,
    634     /** Sc @stable ICU 2.0 */
    635     U_CURRENCY_SYMBOL         = 25,
    636     /** Sk @stable ICU 2.0 */
    637     U_MODIFIER_SYMBOL         = 26,
    638     /** So @stable ICU 2.0 */
    639     U_OTHER_SYMBOL            = 27,
    640     /** Pi @stable ICU 2.0 */
    641     U_INITIAL_PUNCTUATION     = 28,
    642     /** Pf @stable ICU 2.0 */
    643     U_FINAL_PUNCTUATION       = 29,
    644     /** One higher than the last enum UCharCategory constant. @stable ICU 2.0 */
    645     U_CHAR_CATEGORY_COUNT
    646 } UCharCategory;
    647 
    648 /**
    649  * U_GC_XX_MASK constants are bit flags corresponding to Unicode
    650  * general category values.
    651  * For each category, the nth bit is set if the numeric value of the
    652  * corresponding UCharCategory constant is n.
    653  *
    654  * There are also some U_GC_Y_MASK constants for groups of general categories
    655  * like L for all letter categories.
    656  *
    657  * @see u_charType
    658  * @see U_GET_GC_MASK
    659  * @see UCharCategory
    660  * @stable ICU 2.1
    661  */
    662 #define U_GC_CN_MASK    U_MASK(U_GENERAL_OTHER_TYPES)
    663 
    664 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    665 #define U_GC_LU_MASK    U_MASK(U_UPPERCASE_LETTER)
    666 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    667 #define U_GC_LL_MASK    U_MASK(U_LOWERCASE_LETTER)
    668 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    669 #define U_GC_LT_MASK    U_MASK(U_TITLECASE_LETTER)
    670 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    671 #define U_GC_LM_MASK    U_MASK(U_MODIFIER_LETTER)
    672 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    673 #define U_GC_LO_MASK    U_MASK(U_OTHER_LETTER)
    674 
    675 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    676 #define U_GC_MN_MASK    U_MASK(U_NON_SPACING_MARK)
    677 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    678 #define U_GC_ME_MASK    U_MASK(U_ENCLOSING_MARK)
    679 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    680 #define U_GC_MC_MASK    U_MASK(U_COMBINING_SPACING_MARK)
    681 
    682 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    683 #define U_GC_ND_MASK    U_MASK(U_DECIMAL_DIGIT_NUMBER)
    684 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    685 #define U_GC_NL_MASK    U_MASK(U_LETTER_NUMBER)
    686 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    687 #define U_GC_NO_MASK    U_MASK(U_OTHER_NUMBER)
    688 
    689 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    690 #define U_GC_ZS_MASK    U_MASK(U_SPACE_SEPARATOR)
    691 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    692 #define U_GC_ZL_MASK    U_MASK(U_LINE_SEPARATOR)
    693 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    694 #define U_GC_ZP_MASK    U_MASK(U_PARAGRAPH_SEPARATOR)
    695 
    696 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    697 #define U_GC_CC_MASK    U_MASK(U_CONTROL_CHAR)
    698 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    699 #define U_GC_CF_MASK    U_MASK(U_FORMAT_CHAR)
    700 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    701 #define U_GC_CO_MASK    U_MASK(U_PRIVATE_USE_CHAR)
    702 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    703 #define U_GC_CS_MASK    U_MASK(U_SURROGATE)
    704 
    705 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    706 #define U_GC_PD_MASK    U_MASK(U_DASH_PUNCTUATION)
    707 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    708 #define U_GC_PS_MASK    U_MASK(U_START_PUNCTUATION)
    709 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    710 #define U_GC_PE_MASK    U_MASK(U_END_PUNCTUATION)
    711 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    712 #define U_GC_PC_MASK    U_MASK(U_CONNECTOR_PUNCTUATION)
    713 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    714 #define U_GC_PO_MASK    U_MASK(U_OTHER_PUNCTUATION)
    715 
    716 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    717 #define U_GC_SM_MASK    U_MASK(U_MATH_SYMBOL)
    718 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    719 #define U_GC_SC_MASK    U_MASK(U_CURRENCY_SYMBOL)
    720 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    721 #define U_GC_SK_MASK    U_MASK(U_MODIFIER_SYMBOL)
    722 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    723 #define U_GC_SO_MASK    U_MASK(U_OTHER_SYMBOL)
    724 
    725 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    726 #define U_GC_PI_MASK    U_MASK(U_INITIAL_PUNCTUATION)
    727 /** Mask constant for a UCharCategory. @stable ICU 2.1 */
    728 #define U_GC_PF_MASK    U_MASK(U_FINAL_PUNCTUATION)
    729 
    730 
    731 /** Mask constant for multiple UCharCategory bits (L Letters). @stable ICU 2.1 */
    732 #define U_GC_L_MASK \
    733             (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK|U_GC_LM_MASK|U_GC_LO_MASK)
    734 
    735 /** Mask constant for multiple UCharCategory bits (LC Cased Letters). @stable ICU 2.1 */
    736 #define U_GC_LC_MASK \
    737             (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK)
    738 
    739 /** Mask constant for multiple UCharCategory bits (M Marks). @stable ICU 2.1 */
    740 #define U_GC_M_MASK (U_GC_MN_MASK|U_GC_ME_MASK|U_GC_MC_MASK)
    741 
    742 /** Mask constant for multiple UCharCategory bits (N Numbers). @stable ICU 2.1 */
    743 #define U_GC_N_MASK (U_GC_ND_MASK|U_GC_NL_MASK|U_GC_NO_MASK)
    744 
    745 /** Mask constant for multiple UCharCategory bits (Z Separators). @stable ICU 2.1 */
    746 #define U_GC_Z_MASK (U_GC_ZS_MASK|U_GC_ZL_MASK|U_GC_ZP_MASK)
    747 
    748 /** Mask constant for multiple UCharCategory bits (C Others). @stable ICU 2.1 */
    749 #define U_GC_C_MASK \
    750             (U_GC_CN_MASK|U_GC_CC_MASK|U_GC_CF_MASK|U_GC_CO_MASK|U_GC_CS_MASK)
    751 
    752 /** Mask constant for multiple UCharCategory bits (P Punctuation). @stable ICU 2.1 */
    753 #define U_GC_P_MASK \
    754             (U_GC_PD_MASK|U_GC_PS_MASK|U_GC_PE_MASK|U_GC_PC_MASK|U_GC_PO_MASK| \
    755              U_GC_PI_MASK|U_GC_PF_MASK)
    756 
    757 /** Mask constant for multiple UCharCategory bits (S Symbols). @stable ICU 2.1 */
    758 #define U_GC_S_MASK (U_GC_SM_MASK|U_GC_SC_MASK|U_GC_SK_MASK|U_GC_SO_MASK)
    759 
    760 /**
    761  * This specifies the language directional property of a character set.
    762  * @stable ICU 2.0
    763  */
    764 typedef enum UCharDirection {
    765     /** See note !!.  Comments of the form "EN" are read by genpname. */
    766 
    767     /** L @stable ICU 2.0 */
    768     U_LEFT_TO_RIGHT               = 0,
    769     /** R @stable ICU 2.0 */
    770     U_RIGHT_TO_LEFT               = 1,
    771     /** EN @stable ICU 2.0 */
    772     U_EUROPEAN_NUMBER             = 2,
    773     /** ES @stable ICU 2.0 */
    774     U_EUROPEAN_NUMBER_SEPARATOR   = 3,
    775     /** ET @stable ICU 2.0 */
    776     U_EUROPEAN_NUMBER_TERMINATOR  = 4,
    777     /** AN @stable ICU 2.0 */
    778     U_ARABIC_NUMBER               = 5,
    779     /** CS @stable ICU 2.0 */
    780     U_COMMON_NUMBER_SEPARATOR     = 6,
    781     /** B @stable ICU 2.0 */
    782     U_BLOCK_SEPARATOR             = 7,
    783     /** S @stable ICU 2.0 */
    784     U_SEGMENT_SEPARATOR           = 8,
    785     /** WS @stable ICU 2.0 */
    786     U_WHITE_SPACE_NEUTRAL         = 9,
    787     /** ON @stable ICU 2.0 */
    788     U_OTHER_NEUTRAL               = 10,
    789     /** LRE @stable ICU 2.0 */
    790     U_LEFT_TO_RIGHT_EMBEDDING     = 11,
    791     /** LRO @stable ICU 2.0 */
    792     U_LEFT_TO_RIGHT_OVERRIDE      = 12,
    793     /** AL @stable ICU 2.0 */
    794     U_RIGHT_TO_LEFT_ARABIC        = 13,
    795     /** RLE @stable ICU 2.0 */
    796     U_RIGHT_TO_LEFT_EMBEDDING     = 14,
    797     /** RLO @stable ICU 2.0 */
    798     U_RIGHT_TO_LEFT_OVERRIDE      = 15,
    799     /** PDF @stable ICU 2.0 */
    800     U_POP_DIRECTIONAL_FORMAT      = 16,
    801     /** NSM @stable ICU 2.0 */
    802     U_DIR_NON_SPACING_MARK        = 17,
    803     /** BN @stable ICU 2.0 */
    804     U_BOUNDARY_NEUTRAL            = 18,
    805     /** @stable ICU 2.0 */
    806     U_CHAR_DIRECTION_COUNT
    807 } UCharDirection;
    808 
    809 /**
    810  * Constants for Unicode blocks, see the Unicode Data file Blocks.txt
    811  * @stable ICU 2.0
    812  */
    813 enum UBlockCode {
    814 
    815     /** New No_Block value in Unicode 4. @stable ICU 2.6 */
    816     UBLOCK_NO_BLOCK = 0, /*[none]*/ /* Special range indicating No_Block */
    817 
    818     /** @stable ICU 2.0 */
    819     UBLOCK_BASIC_LATIN = 1, /*[0000]*/ /*See note !!*/
    820 
    821     /** @stable ICU 2.0 */
    822     UBLOCK_LATIN_1_SUPPLEMENT=2, /*[0080]*/
    823 
    824     /** @stable ICU 2.0 */
    825     UBLOCK_LATIN_EXTENDED_A =3, /*[0100]*/
    826 
    827     /** @stable ICU 2.0 */
    828     UBLOCK_LATIN_EXTENDED_B =4, /*[0180]*/
    829 
    830     /** @stable ICU 2.0 */
    831     UBLOCK_IPA_EXTENSIONS =5, /*[0250]*/
    832 
    833     /** @stable ICU 2.0 */
    834     UBLOCK_SPACING_MODIFIER_LETTERS =6, /*[02B0]*/
    835 
    836     /** @stable ICU 2.0 */
    837     UBLOCK_COMBINING_DIACRITICAL_MARKS =7, /*[0300]*/
    838 
    839     /**
    840      * Unicode 3.2 renames this block to "Greek and Coptic".
    841      * @stable ICU 2.0
    842      */
    843     UBLOCK_GREEK =8, /*[0370]*/
    844 
    845     /** @stable ICU 2.0 */
    846     UBLOCK_CYRILLIC =9, /*[0400]*/
    847 
    848     /** @stable ICU 2.0 */
    849     UBLOCK_ARMENIAN =10, /*[0530]*/
    850 
    851     /** @stable ICU 2.0 */
    852     UBLOCK_HEBREW =11, /*[0590]*/
    853 
    854     /** @stable ICU 2.0 */
    855     UBLOCK_ARABIC =12, /*[0600]*/
    856 
    857     /** @stable ICU 2.0 */
    858     UBLOCK_SYRIAC =13, /*[0700]*/
    859 
    860     /** @stable ICU 2.0 */
    861     UBLOCK_THAANA =14, /*[0780]*/
    862 
    863     /** @stable ICU 2.0 */
    864     UBLOCK_DEVANAGARI =15, /*[0900]*/
    865 
    866     /** @stable ICU 2.0 */
    867     UBLOCK_BENGALI =16, /*[0980]*/
    868 
    869     /** @stable ICU 2.0 */
    870     UBLOCK_GURMUKHI =17, /*[0A00]*/
    871 
    872     /** @stable ICU 2.0 */
    873     UBLOCK_GUJARATI =18, /*[0A80]*/
    874 
    875     /** @stable ICU 2.0 */
    876     UBLOCK_ORIYA =19, /*[0B00]*/
    877 
    878     /** @stable ICU 2.0 */
    879     UBLOCK_TAMIL =20, /*[0B80]*/
    880 
    881     /** @stable ICU 2.0 */
    882     UBLOCK_TELUGU =21, /*[0C00]*/
    883 
    884     /** @stable ICU 2.0 */
    885     UBLOCK_KANNADA =22, /*[0C80]*/
    886 
    887     /** @stable ICU 2.0 */
    888     UBLOCK_MALAYALAM =23, /*[0D00]*/
    889 
    890     /** @stable ICU 2.0 */
    891     UBLOCK_SINHALA =24, /*[0D80]*/
    892 
    893     /** @stable ICU 2.0 */
    894     UBLOCK_THAI =25, /*[0E00]*/
    895 
    896     /** @stable ICU 2.0 */
    897     UBLOCK_LAO =26, /*[0E80]*/
    898 
    899     /** @stable ICU 2.0 */
    900     UBLOCK_TIBETAN =27, /*[0F00]*/
    901 
    902     /** @stable ICU 2.0 */
    903     UBLOCK_MYANMAR =28, /*[1000]*/
    904 
    905     /** @stable ICU 2.0 */
    906     UBLOCK_GEORGIAN =29, /*[10A0]*/
    907 
    908     /** @stable ICU 2.0 */
    909     UBLOCK_HANGUL_JAMO =30, /*[1100]*/
    910 
    911     /** @stable ICU 2.0 */
    912     UBLOCK_ETHIOPIC =31, /*[1200]*/
    913 
    914     /** @stable ICU 2.0 */
    915     UBLOCK_CHEROKEE =32, /*[13A0]*/
    916 
    917     /** @stable ICU 2.0 */
    918     UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS =33, /*[1400]*/
    919 
    920     /** @stable ICU 2.0 */
    921     UBLOCK_OGHAM =34, /*[1680]*/
    922 
    923     /** @stable ICU 2.0 */
    924     UBLOCK_RUNIC =35, /*[16A0]*/
    925 
    926     /** @stable ICU 2.0 */
    927     UBLOCK_KHMER =36, /*[1780]*/
    928 
    929     /** @stable ICU 2.0 */
    930     UBLOCK_MONGOLIAN =37, /*[1800]*/
    931 
    932     /** @stable ICU 2.0 */
    933     UBLOCK_LATIN_EXTENDED_ADDITIONAL =38, /*[1E00]*/
    934 
    935     /** @stable ICU 2.0 */
    936     UBLOCK_GREEK_EXTENDED =39, /*[1F00]*/
    937 
    938     /** @stable ICU 2.0 */
    939     UBLOCK_GENERAL_PUNCTUATION =40, /*[2000]*/
    940 
    941     /** @stable ICU 2.0 */
    942     UBLOCK_SUPERSCRIPTS_AND_SUBSCRIPTS =41, /*[2070]*/
    943 
    944     /** @stable ICU 2.0 */
    945     UBLOCK_CURRENCY_SYMBOLS =42, /*[20A0]*/
    946 
    947     /**
    948      * Unicode 3.2 renames this block to "Combining Diacritical Marks for Symbols".
    949      * @stable ICU 2.0
    950      */
    951     UBLOCK_COMBINING_MARKS_FOR_SYMBOLS =43, /*[20D0]*/
    952 
    953     /** @stable ICU 2.0 */
    954     UBLOCK_LETTERLIKE_SYMBOLS =44, /*[2100]*/
    955 
    956     /** @stable ICU 2.0 */
    957     UBLOCK_NUMBER_FORMS =45, /*[2150]*/
    958 
    959     /** @stable ICU 2.0 */
    960     UBLOCK_ARROWS =46, /*[2190]*/
    961 
    962     /** @stable ICU 2.0 */
    963     UBLOCK_MATHEMATICAL_OPERATORS =47, /*[2200]*/
    964 
    965     /** @stable ICU 2.0 */
    966     UBLOCK_MISCELLANEOUS_TECHNICAL =48, /*[2300]*/
    967 
    968     /** @stable ICU 2.0 */
    969     UBLOCK_CONTROL_PICTURES =49, /*[2400]*/
    970 
    971     /** @stable ICU 2.0 */
    972     UBLOCK_OPTICAL_CHARACTER_RECOGNITION =50, /*[2440]*/
    973 
    974     /** @stable ICU 2.0 */
    975     UBLOCK_ENCLOSED_ALPHANUMERICS =51, /*[2460]*/
    976 
    977     /** @stable ICU 2.0 */
    978     UBLOCK_BOX_DRAWING =52, /*[2500]*/
    979 
    980     /** @stable ICU 2.0 */
    981     UBLOCK_BLOCK_ELEMENTS =53, /*[2580]*/
    982 
    983     /** @stable ICU 2.0 */
    984     UBLOCK_GEOMETRIC_SHAPES =54, /*[25A0]*/
    985 
    986     /** @stable ICU 2.0 */
    987     UBLOCK_MISCELLANEOUS_SYMBOLS =55, /*[2600]*/
    988 
    989     /** @stable ICU 2.0 */
    990     UBLOCK_DINGBATS =56, /*[2700]*/
    991 
    992     /** @stable ICU 2.0 */
    993     UBLOCK_BRAILLE_PATTERNS =57, /*[2800]*/
    994 
    995     /** @stable ICU 2.0 */
    996     UBLOCK_CJK_RADICALS_SUPPLEMENT =58, /*[2E80]*/
    997 
    998     /** @stable ICU 2.0 */
    999     UBLOCK_KANGXI_RADICALS =59, /*[2F00]*/
   1000 
   1001     /** @stable ICU 2.0 */
   1002     UBLOCK_IDEOGRAPHIC_DESCRIPTION_CHARACTERS =60, /*[2FF0]*/
   1003 
   1004     /** @stable ICU 2.0 */
   1005     UBLOCK_CJK_SYMBOLS_AND_PUNCTUATION =61, /*[3000]*/
   1006 
   1007     /** @stable ICU 2.0 */
   1008     UBLOCK_HIRAGANA =62, /*[3040]*/
   1009 
   1010     /** @stable ICU 2.0 */
   1011     UBLOCK_KATAKANA =63, /*[30A0]*/
   1012 
   1013     /** @stable ICU 2.0 */
   1014     UBLOCK_BOPOMOFO =64, /*[3100]*/
   1015 
   1016     /** @stable ICU 2.0 */
   1017     UBLOCK_HANGUL_COMPATIBILITY_JAMO =65, /*[3130]*/
   1018 
   1019     /** @stable ICU 2.0 */
   1020     UBLOCK_KANBUN =66, /*[3190]*/
   1021 
   1022     /** @stable ICU 2.0 */
   1023     UBLOCK_BOPOMOFO_EXTENDED =67, /*[31A0]*/
   1024 
   1025     /** @stable ICU 2.0 */
   1026     UBLOCK_ENCLOSED_CJK_LETTERS_AND_MONTHS =68, /*[3200]*/
   1027 
   1028     /** @stable ICU 2.0 */
   1029     UBLOCK_CJK_COMPATIBILITY =69, /*[3300]*/
   1030 
   1031     /** @stable ICU 2.0 */
   1032     UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A =70, /*[3400]*/
   1033 
   1034     /** @stable ICU 2.0 */
   1035     UBLOCK_CJK_UNIFIED_IDEOGRAPHS =71, /*[4E00]*/
   1036 
   1037     /** @stable ICU 2.0 */
   1038     UBLOCK_YI_SYLLABLES =72, /*[A000]*/
   1039 
   1040     /** @stable ICU 2.0 */
   1041     UBLOCK_YI_RADICALS =73, /*[A490]*/
   1042 
   1043     /** @stable ICU 2.0 */
   1044     UBLOCK_HANGUL_SYLLABLES =74, /*[AC00]*/
   1045 
   1046     /** @stable ICU 2.0 */
   1047     UBLOCK_HIGH_SURROGATES =75, /*[D800]*/
   1048 
   1049     /** @stable ICU 2.0 */
   1050     UBLOCK_HIGH_PRIVATE_USE_SURROGATES =76, /*[DB80]*/
   1051 
   1052     /** @stable ICU 2.0 */
   1053     UBLOCK_LOW_SURROGATES =77, /*[DC00]*/
   1054 
   1055     /**
   1056      * Same as UBLOCK_PRIVATE_USE_AREA.
   1057      * Until Unicode 3.1.1, the corresponding block name was "Private Use",
   1058      * and multiple code point ranges had this block.
   1059      * Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and
   1060      * adds separate blocks for the supplementary PUAs.
   1061      *
   1062      * @stable ICU 2.0
   1063      */
   1064     UBLOCK_PRIVATE_USE = 78,
   1065     /**
   1066      * Same as UBLOCK_PRIVATE_USE.
   1067      * Until Unicode 3.1.1, the corresponding block name was "Private Use",
   1068      * and multiple code point ranges had this block.
   1069      * Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and
   1070      * adds separate blocks for the supplementary PUAs.
   1071      *
   1072      * @stable ICU 2.0
   1073      */
   1074     UBLOCK_PRIVATE_USE_AREA =UBLOCK_PRIVATE_USE, /*[E000]*/
   1075 
   1076     /** @stable ICU 2.0 */
   1077     UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS =79, /*[F900]*/
   1078 
   1079     /** @stable ICU 2.0 */
   1080     UBLOCK_ALPHABETIC_PRESENTATION_FORMS =80, /*[FB00]*/
   1081 
   1082     /** @stable ICU 2.0 */
   1083     UBLOCK_ARABIC_PRESENTATION_FORMS_A =81, /*[FB50]*/
   1084 
   1085     /** @stable ICU 2.0 */
   1086     UBLOCK_COMBINING_HALF_MARKS =82, /*[FE20]*/
   1087 
   1088     /** @stable ICU 2.0 */
   1089     UBLOCK_CJK_COMPATIBILITY_FORMS =83, /*[FE30]*/
   1090 
   1091     /** @stable ICU 2.0 */
   1092     UBLOCK_SMALL_FORM_VARIANTS =84, /*[FE50]*/
   1093 
   1094     /** @stable ICU 2.0 */
   1095     UBLOCK_ARABIC_PRESENTATION_FORMS_B =85, /*[FE70]*/
   1096 
   1097     /** @stable ICU 2.0 */
   1098     UBLOCK_SPECIALS =86, /*[FFF0]*/
   1099 
   1100     /** @stable ICU 2.0 */
   1101     UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS =87, /*[FF00]*/
   1102 
   1103     /* New blocks in Unicode 3.1 */
   1104 
   1105     /** @stable ICU 2.0 */
   1106     UBLOCK_OLD_ITALIC = 88  , /*[10300]*/
   1107     /** @stable ICU 2.0 */
   1108     UBLOCK_GOTHIC = 89 , /*[10330]*/
   1109     /** @stable ICU 2.0 */
   1110     UBLOCK_DESERET = 90 , /*[10400]*/
   1111     /** @stable ICU 2.0 */
   1112     UBLOCK_BYZANTINE_MUSICAL_SYMBOLS = 91 , /*[1D000]*/
   1113     /** @stable ICU 2.0 */
   1114     UBLOCK_MUSICAL_SYMBOLS = 92 , /*[1D100]*/
   1115     /** @stable ICU 2.0 */
   1116     UBLOCK_MATHEMATICAL_ALPHANUMERIC_SYMBOLS = 93  , /*[1D400]*/
   1117     /** @stable ICU 2.0 */
   1118     UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B  = 94 , /*[20000]*/
   1119     /** @stable ICU 2.0 */
   1120     UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT = 95 , /*[2F800]*/
   1121     /** @stable ICU 2.0 */
   1122     UBLOCK_TAGS = 96, /*[E0000]*/
   1123 
   1124     /* New blocks in Unicode 3.2 */
   1125 
   1126     /**
   1127      * Unicode 4.0.1 renames the "Cyrillic Supplementary" block to "Cyrillic Supplement".
   1128      * @stable ICU 2.2
   1129      */
   1130     UBLOCK_CYRILLIC_SUPPLEMENTARY = 97,
   1131     /** @stable ICU 3.0  */
   1132     UBLOCK_CYRILLIC_SUPPLEMENT = UBLOCK_CYRILLIC_SUPPLEMENTARY, /*[0500]*/
   1133     /** @stable ICU 2.2 */
   1134     UBLOCK_TAGALOG = 98, /*[1700]*/
   1135     /** @stable ICU 2.2 */
   1136     UBLOCK_HANUNOO = 99, /*[1720]*/
   1137     /** @stable ICU 2.2 */
   1138     UBLOCK_BUHID = 100, /*[1740]*/
   1139     /** @stable ICU 2.2 */
   1140     UBLOCK_TAGBANWA = 101, /*[1760]*/
   1141     /** @stable ICU 2.2 */
   1142     UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A = 102, /*[27C0]*/
   1143     /** @stable ICU 2.2 */
   1144     UBLOCK_SUPPLEMENTAL_ARROWS_A = 103, /*[27F0]*/
   1145     /** @stable ICU 2.2 */
   1146     UBLOCK_SUPPLEMENTAL_ARROWS_B = 104, /*[2900]*/
   1147     /** @stable ICU 2.2 */
   1148     UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B = 105, /*[2980]*/
   1149     /** @stable ICU 2.2 */
   1150     UBLOCK_SUPPLEMENTAL_MATHEMATICAL_OPERATORS = 106, /*[2A00]*/
   1151     /** @stable ICU 2.2 */
   1152     UBLOCK_KATAKANA_PHONETIC_EXTENSIONS = 107, /*[31F0]*/
   1153     /** @stable ICU 2.2 */
   1154     UBLOCK_VARIATION_SELECTORS = 108, /*[FE00]*/
   1155     /** @stable ICU 2.2 */
   1156     UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_A = 109, /*[F0000]*/
   1157     /** @stable ICU 2.2 */
   1158     UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_B = 110, /*[100000]*/
   1159 
   1160     /* New blocks in Unicode 4 */
   1161 
   1162     /** @stable ICU 2.6 */
   1163     UBLOCK_LIMBU = 111, /*[1900]*/
   1164     /** @stable ICU 2.6 */
   1165     UBLOCK_TAI_LE = 112, /*[1950]*/
   1166     /** @stable ICU 2.6 */
   1167     UBLOCK_KHMER_SYMBOLS = 113, /*[19E0]*/
   1168     /** @stable ICU 2.6 */
   1169     UBLOCK_PHONETIC_EXTENSIONS = 114, /*[1D00]*/
   1170     /** @stable ICU 2.6 */
   1171     UBLOCK_MISCELLANEOUS_SYMBOLS_AND_ARROWS = 115, /*[2B00]*/
   1172     /** @stable ICU 2.6 */
   1173     UBLOCK_YIJING_HEXAGRAM_SYMBOLS = 116, /*[4DC0]*/
   1174     /** @stable ICU 2.6 */
   1175     UBLOCK_LINEAR_B_SYLLABARY = 117, /*[10000]*/
   1176     /** @stable ICU 2.6 */
   1177     UBLOCK_LINEAR_B_IDEOGRAMS = 118, /*[10080]*/
   1178     /** @stable ICU 2.6 */
   1179     UBLOCK_AEGEAN_NUMBERS = 119, /*[10100]*/
   1180     /** @stable ICU 2.6 */
   1181     UBLOCK_UGARITIC = 120, /*[10380]*/
   1182     /** @stable ICU 2.6 */
   1183     UBLOCK_SHAVIAN = 121, /*[10450]*/
   1184     /** @stable ICU 2.6 */
   1185     UBLOCK_OSMANYA = 122, /*[10480]*/
   1186     /** @stable ICU 2.6 */
   1187     UBLOCK_CYPRIOT_SYLLABARY = 123, /*[10800]*/
   1188     /** @stable ICU 2.6 */
   1189     UBLOCK_TAI_XUAN_JING_SYMBOLS = 124, /*[1D300]*/
   1190     /** @stable ICU 2.6 */
   1191     UBLOCK_VARIATION_SELECTORS_SUPPLEMENT = 125, /*[E0100]*/
   1192 
   1193     /* New blocks in Unicode 4.1 */
   1194 
   1195     /** @stable ICU 3.4 */
   1196     UBLOCK_ANCIENT_GREEK_MUSICAL_NOTATION = 126, /*[1D200]*/
   1197     /** @stable ICU 3.4 */
   1198     UBLOCK_ANCIENT_GREEK_NUMBERS = 127, /*[10140]*/
   1199     /** @stable ICU 3.4 */
   1200     UBLOCK_ARABIC_SUPPLEMENT = 128, /*[0750]*/
   1201     /** @stable ICU 3.4 */
   1202     UBLOCK_BUGINESE = 129, /*[1A00]*/
   1203     /** @stable ICU 3.4 */
   1204     UBLOCK_CJK_STROKES = 130, /*[31C0]*/
   1205     /** @stable ICU 3.4 */
   1206     UBLOCK_COMBINING_DIACRITICAL_MARKS_SUPPLEMENT = 131, /*[1DC0]*/
   1207     /** @stable ICU 3.4 */
   1208     UBLOCK_COPTIC = 132, /*[2C80]*/
   1209     /** @stable ICU 3.4 */
   1210     UBLOCK_ETHIOPIC_EXTENDED = 133, /*[2D80]*/
   1211     /** @stable ICU 3.4 */
   1212     UBLOCK_ETHIOPIC_SUPPLEMENT = 134, /*[1380]*/
   1213     /** @stable ICU 3.4 */
   1214     UBLOCK_GEORGIAN_SUPPLEMENT = 135, /*[2D00]*/
   1215     /** @stable ICU 3.4 */
   1216     UBLOCK_GLAGOLITIC = 136, /*[2C00]*/
   1217     /** @stable ICU 3.4 */
   1218     UBLOCK_KHAROSHTHI = 137, /*[10A00]*/
   1219     /** @stable ICU 3.4 */
   1220     UBLOCK_MODIFIER_TONE_LETTERS = 138, /*[A700]*/
   1221     /** @stable ICU 3.4 */
   1222     UBLOCK_NEW_TAI_LUE = 139, /*[1980]*/
   1223     /** @stable ICU 3.4 */
   1224     UBLOCK_OLD_PERSIAN = 140, /*[103A0]*/
   1225     /** @stable ICU 3.4 */
   1226     UBLOCK_PHONETIC_EXTENSIONS_SUPPLEMENT = 141, /*[1D80]*/
   1227     /** @stable ICU 3.4 */
   1228     UBLOCK_SUPPLEMENTAL_PUNCTUATION = 142, /*[2E00]*/
   1229     /** @stable ICU 3.4 */
   1230     UBLOCK_SYLOTI_NAGRI = 143, /*[A800]*/
   1231     /** @stable ICU 3.4 */
   1232     UBLOCK_TIFINAGH = 144, /*[2D30]*/
   1233     /** @stable ICU 3.4 */
   1234     UBLOCK_VERTICAL_FORMS = 145, /*[FE10]*/
   1235 
   1236     /* New blocks in Unicode 5.0 */
   1237 
   1238     /** @stable ICU 3.6 */
   1239     UBLOCK_NKO = 146, /*[07C0]*/
   1240     /** @stable ICU 3.6 */
   1241     UBLOCK_BALINESE = 147, /*[1B00]*/
   1242     /** @stable ICU 3.6 */
   1243     UBLOCK_LATIN_EXTENDED_C = 148, /*[2C60]*/
   1244     /** @stable ICU 3.6 */
   1245     UBLOCK_LATIN_EXTENDED_D = 149, /*[A720]*/
   1246     /** @stable ICU 3.6 */
   1247     UBLOCK_PHAGS_PA = 150, /*[A840]*/
   1248     /** @stable ICU 3.6 */
   1249     UBLOCK_PHOENICIAN = 151, /*[10900]*/
   1250     /** @stable ICU 3.6 */
   1251     UBLOCK_CUNEIFORM = 152, /*[12000]*/
   1252     /** @stable ICU 3.6 */
   1253     UBLOCK_CUNEIFORM_NUMBERS_AND_PUNCTUATION = 153, /*[12400]*/
   1254     /** @stable ICU 3.6 */
   1255     UBLOCK_COUNTING_ROD_NUMERALS = 154, /*[1D360]*/
   1256 
   1257     /* New blocks in Unicode 5.1 */
   1258 
   1259     /** @stable ICU 4.0 */
   1260     UBLOCK_SUNDANESE = 155, /*[1B80]*/
   1261     /** @stable ICU 4.0 */
   1262     UBLOCK_LEPCHA = 156, /*[1C00]*/
   1263     /** @stable ICU 4.0 */
   1264     UBLOCK_OL_CHIKI = 157, /*[1C50]*/
   1265     /** @stable ICU 4.0 */
   1266     UBLOCK_CYRILLIC_EXTENDED_A = 158, /*[2DE0]*/
   1267     /** @stable ICU 4.0 */
   1268     UBLOCK_VAI = 159, /*[A500]*/
   1269     /** @stable ICU 4.0 */
   1270     UBLOCK_CYRILLIC_EXTENDED_B = 160, /*[A640]*/
   1271     /** @stable ICU 4.0 */
   1272     UBLOCK_SAURASHTRA = 161, /*[A880]*/
   1273     /** @stable ICU 4.0 */
   1274     UBLOCK_KAYAH_LI = 162, /*[A900]*/
   1275     /** @stable ICU 4.0 */
   1276     UBLOCK_REJANG = 163, /*[A930]*/
   1277     /** @stable ICU 4.0 */
   1278     UBLOCK_CHAM = 164, /*[AA00]*/
   1279     /** @stable ICU 4.0 */
   1280     UBLOCK_ANCIENT_SYMBOLS = 165, /*[10190]*/
   1281     /** @stable ICU 4.0 */
   1282     UBLOCK_PHAISTOS_DISC = 166, /*[101D0]*/
   1283     /** @stable ICU 4.0 */
   1284     UBLOCK_LYCIAN = 167, /*[10280]*/
   1285     /** @stable ICU 4.0 */
   1286     UBLOCK_CARIAN = 168, /*[102A0]*/
   1287     /** @stable ICU 4.0 */
   1288     UBLOCK_LYDIAN = 169, /*[10920]*/
   1289     /** @stable ICU 4.0 */
   1290     UBLOCK_MAHJONG_TILES = 170, /*[1F000]*/
   1291     /** @stable ICU 4.0 */
   1292     UBLOCK_DOMINO_TILES = 171, /*[1F030]*/
   1293 
   1294     /** @stable ICU 2.0 */
   1295     UBLOCK_COUNT = 172,
   1296 
   1297     /** @stable ICU 2.0 */
   1298     UBLOCK_INVALID_CODE=-1
   1299 };
   1300 
   1301 /** @stable ICU 2.0 */
   1302 typedef enum UBlockCode UBlockCode;
   1303 
   1304 /**
   1305  * East Asian Width constants.
   1306  *
   1307  * @see UCHAR_EAST_ASIAN_WIDTH
   1308  * @see u_getIntPropertyValue
   1309  * @stable ICU 2.2
   1310  */
   1311 typedef enum UEastAsianWidth {
   1312     U_EA_NEUTRAL,   /*[N]*/ /*See note !!*/
   1313     U_EA_AMBIGUOUS, /*[A]*/
   1314     U_EA_HALFWIDTH, /*[H]*/
   1315     U_EA_FULLWIDTH, /*[F]*/
   1316     U_EA_NARROW,    /*[Na]*/
   1317     U_EA_WIDE,      /*[W]*/
   1318     U_EA_COUNT
   1319 } UEastAsianWidth;
   1320 /*
   1321  * Implementation note:
   1322  * Keep UEastAsianWidth constant values in sync with names list in genprops/props2.c.
   1323  */
   1324 
   1325 /**
   1326  * Selector constants for u_charName().
   1327  * u_charName() returns the "modern" name of a
   1328  * Unicode character; or the name that was defined in
   1329  * Unicode version 1.0, before the Unicode standard merged
   1330  * with ISO-10646; or an "extended" name that gives each
   1331  * Unicode code point a unique name.
   1332  *
   1333  * @see u_charName
   1334  * @stable ICU 2.0
   1335  */
   1336 typedef enum UCharNameChoice {
   1337     U_UNICODE_CHAR_NAME,
   1338     U_UNICODE_10_CHAR_NAME,
   1339     U_EXTENDED_CHAR_NAME,
   1340     U_CHAR_NAME_CHOICE_COUNT
   1341 } UCharNameChoice;
   1342 
   1343 /**
   1344  * Selector constants for u_getPropertyName() and
   1345  * u_getPropertyValueName().  These selectors are used to choose which
   1346  * name is returned for a given property or value.  All properties and
   1347  * values have a long name.  Most have a short name, but some do not.
   1348  * Unicode allows for additional names, beyond the long and short
   1349  * name, which would be indicated by U_LONG_PROPERTY_NAME + i, where
   1350  * i=1, 2,...
   1351  *
   1352  * @see u_getPropertyName()
   1353  * @see u_getPropertyValueName()
   1354  * @stable ICU 2.4
   1355  */
   1356 typedef enum UPropertyNameChoice {
   1357     U_SHORT_PROPERTY_NAME,
   1358     U_LONG_PROPERTY_NAME,
   1359     U_PROPERTY_NAME_CHOICE_COUNT
   1360 } UPropertyNameChoice;
   1361 
   1362 /**
   1363  * Decomposition Type constants.
   1364  *
   1365  * @see UCHAR_DECOMPOSITION_TYPE
   1366  * @stable ICU 2.2
   1367  */
   1368 typedef enum UDecompositionType {
   1369     U_DT_NONE,              /*[none]*/ /*See note !!*/
   1370     U_DT_CANONICAL,         /*[can]*/
   1371     U_DT_COMPAT,            /*[com]*/
   1372     U_DT_CIRCLE,            /*[enc]*/
   1373     U_DT_FINAL,             /*[fin]*/
   1374     U_DT_FONT,              /*[font]*/
   1375     U_DT_FRACTION,          /*[fra]*/
   1376     U_DT_INITIAL,           /*[init]*/
   1377     U_DT_ISOLATED,          /*[iso]*/
   1378     U_DT_MEDIAL,            /*[med]*/
   1379     U_DT_NARROW,            /*[nar]*/
   1380     U_DT_NOBREAK,           /*[nb]*/
   1381     U_DT_SMALL,             /*[sml]*/
   1382     U_DT_SQUARE,            /*[sqr]*/
   1383     U_DT_SUB,               /*[sub]*/
   1384     U_DT_SUPER,             /*[sup]*/
   1385     U_DT_VERTICAL,          /*[vert]*/
   1386     U_DT_WIDE,              /*[wide]*/
   1387     U_DT_COUNT /* 18 */
   1388 } UDecompositionType;
   1389 
   1390 /**
   1391  * Joining Type constants.
   1392  *
   1393  * @see UCHAR_JOINING_TYPE
   1394  * @stable ICU 2.2
   1395  */
   1396 typedef enum UJoiningType {
   1397     U_JT_NON_JOINING,       /*[U]*/ /*See note !!*/
   1398     U_JT_JOIN_CAUSING,      /*[C]*/
   1399     U_JT_DUAL_JOINING,      /*[D]*/
   1400     U_JT_LEFT_JOINING,      /*[L]*/
   1401     U_JT_RIGHT_JOINING,     /*[R]*/
   1402     U_JT_TRANSPARENT,       /*[T]*/
   1403     U_JT_COUNT /* 6 */
   1404 } UJoiningType;
   1405 
   1406 /**
   1407  * Joining Group constants.
   1408  *
   1409  * @see UCHAR_JOINING_GROUP
   1410  * @stable ICU 2.2
   1411  */
   1412 typedef enum UJoiningGroup {
   1413     U_JG_NO_JOINING_GROUP,
   1414     U_JG_AIN,
   1415     U_JG_ALAPH,
   1416     U_JG_ALEF,
   1417     U_JG_BEH,
   1418     U_JG_BETH,
   1419     U_JG_DAL,
   1420     U_JG_DALATH_RISH,
   1421     U_JG_E,
   1422     U_JG_FEH,
   1423     U_JG_FINAL_SEMKATH,
   1424     U_JG_GAF,
   1425     U_JG_GAMAL,
   1426     U_JG_HAH,
   1427     U_JG_HAMZA_ON_HEH_GOAL,
   1428     U_JG_HE,
   1429     U_JG_HEH,
   1430     U_JG_HEH_GOAL,
   1431     U_JG_HETH,
   1432     U_JG_KAF,
   1433     U_JG_KAPH,
   1434     U_JG_KNOTTED_HEH,
   1435     U_JG_LAM,
   1436     U_JG_LAMADH,
   1437     U_JG_MEEM,
   1438     U_JG_MIM,
   1439     U_JG_NOON,
   1440     U_JG_NUN,
   1441     U_JG_PE,
   1442     U_JG_QAF,
   1443     U_JG_QAPH,
   1444     U_JG_REH,
   1445     U_JG_REVERSED_PE,
   1446     U_JG_SAD,
   1447     U_JG_SADHE,
   1448     U_JG_SEEN,
   1449     U_JG_SEMKATH,
   1450     U_JG_SHIN,
   1451     U_JG_SWASH_KAF,
   1452     U_JG_SYRIAC_WAW,
   1453     U_JG_TAH,
   1454     U_JG_TAW,
   1455     U_JG_TEH_MARBUTA,
   1456     U_JG_TETH,
   1457     U_JG_WAW,
   1458     U_JG_YEH,
   1459     U_JG_YEH_BARREE,
   1460     U_JG_YEH_WITH_TAIL,
   1461     U_JG_YUDH,
   1462     U_JG_YUDH_HE,
   1463     U_JG_ZAIN,
   1464     U_JG_FE,        /**< @stable ICU 2.6 */
   1465     U_JG_KHAPH,     /**< @stable ICU 2.6 */
   1466     U_JG_ZHAIN,     /**< @stable ICU 2.6 */
   1467     U_JG_BURUSHASKI_YEH_BARREE, /**< @stable ICU 4.0 */
   1468     U_JG_COUNT
   1469 } UJoiningGroup;
   1470 
   1471 /**
   1472  * Grapheme Cluster Break constants.
   1473  *
   1474  * @see UCHAR_GRAPHEME_CLUSTER_BREAK
   1475  * @stable ICU 3.4
   1476  */
   1477 typedef enum UGraphemeClusterBreak {
   1478     U_GCB_OTHER = 0,            /*[XX]*/ /*See note !!*/
   1479     U_GCB_CONTROL = 1,          /*[CN]*/
   1480     U_GCB_CR = 2,               /*[CR]*/
   1481     U_GCB_EXTEND = 3,           /*[EX]*/
   1482     U_GCB_L = 4,                /*[L]*/
   1483     U_GCB_LF = 5,               /*[LF]*/
   1484     U_GCB_LV = 6,               /*[LV]*/
   1485     U_GCB_LVT = 7,              /*[LVT]*/
   1486     U_GCB_T = 8,                /*[T]*/
   1487     U_GCB_V = 9,                /*[V]*/
   1488     U_GCB_SPACING_MARK = 10,    /*[SM]*/ /* from here on: new in Unicode 5.1/ICU 4.0 */
   1489     U_GCB_PREPEND = 11,         /*[PP]*/
   1490     U_GCB_COUNT = 12
   1491 } UGraphemeClusterBreak;
   1492 
   1493 /**
   1494  * Word Break constants.
   1495  * (UWordBreak is a pre-existing enum type in ubrk.h for word break status tags.)
   1496  *
   1497  * @see UCHAR_WORD_BREAK
   1498  * @stable ICU 3.4
   1499  */
   1500 typedef enum UWordBreakValues {
   1501     U_WB_OTHER = 0,             /*[XX]*/ /*See note !!*/
   1502     U_WB_ALETTER = 1,           /*[LE]*/
   1503     U_WB_FORMAT = 2,            /*[FO]*/
   1504     U_WB_KATAKANA = 3,          /*[KA]*/
   1505     U_WB_MIDLETTER = 4,         /*[ML]*/
   1506     U_WB_MIDNUM = 5,            /*[MN]*/
   1507     U_WB_NUMERIC = 6,           /*[NU]*/
   1508     U_WB_EXTENDNUMLET = 7,      /*[EX]*/
   1509     U_WB_CR = 8,                /*[CR]*/ /* from here on: new in Unicode 5.1/ICU 4.0 */
   1510     U_WB_EXTEND = 9,            /*[Extend]*/
   1511     U_WB_LF = 10,               /*[LF]*/
   1512     U_WB_MIDNUMLET =11,         /*[MB]*/
   1513     U_WB_NEWLINE =12,           /*[NL]*/
   1514     U_WB_COUNT = 13
   1515 } UWordBreakValues;
   1516 
   1517 /**
   1518  * Sentence Break constants.
   1519  *
   1520  * @see UCHAR_SENTENCE_BREAK
   1521  * @stable ICU 3.4
   1522  */
   1523 typedef enum USentenceBreak {
   1524     U_SB_OTHER = 0,             /*[XX]*/ /*See note !!*/
   1525     U_SB_ATERM = 1,             /*[AT]*/
   1526     U_SB_CLOSE = 2,             /*[CL]*/
   1527     U_SB_FORMAT = 3,            /*[FO]*/
   1528     U_SB_LOWER = 4,             /*[LO]*/
   1529     U_SB_NUMERIC = 5,           /*[NU]*/
   1530     U_SB_OLETTER = 6,           /*[LE]*/
   1531     U_SB_SEP = 7,               /*[SE]*/
   1532     U_SB_SP = 8,                /*[SP]*/
   1533     U_SB_STERM = 9,             /*[ST]*/
   1534     U_SB_UPPER = 10,            /*[UP]*/
   1535     U_SB_CR = 11,               /*[CR]*/ /* from here on: new in Unicode 5.1/ICU 4.0 */
   1536     U_SB_EXTEND = 12,           /*[EX]*/
   1537     U_SB_LF = 13,               /*[LF]*/
   1538     U_SB_SCONTINUE = 14,        /*[SC]*/
   1539     U_SB_COUNT = 15
   1540 } USentenceBreak;
   1541 
   1542 /**
   1543  * Line Break constants.
   1544  *
   1545  * @see UCHAR_LINE_BREAK
   1546  * @stable ICU 2.2
   1547  */
   1548 typedef enum ULineBreak {
   1549     U_LB_UNKNOWN = 0,           /*[XX]*/ /*See note !!*/
   1550     U_LB_AMBIGUOUS = 1,         /*[AI]*/
   1551     U_LB_ALPHABETIC = 2,        /*[AL]*/
   1552     U_LB_BREAK_BOTH = 3,        /*[B2]*/
   1553     U_LB_BREAK_AFTER = 4,       /*[BA]*/
   1554     U_LB_BREAK_BEFORE = 5,      /*[BB]*/
   1555     U_LB_MANDATORY_BREAK = 6,   /*[BK]*/
   1556     U_LB_CONTINGENT_BREAK = 7,  /*[CB]*/
   1557     U_LB_CLOSE_PUNCTUATION = 8, /*[CL]*/
   1558     U_LB_COMBINING_MARK = 9,    /*[CM]*/
   1559     U_LB_CARRIAGE_RETURN = 10,   /*[CR]*/
   1560     U_LB_EXCLAMATION = 11,       /*[EX]*/
   1561     U_LB_GLUE = 12,              /*[GL]*/
   1562     U_LB_HYPHEN = 13,            /*[HY]*/
   1563     U_LB_IDEOGRAPHIC = 14,       /*[ID]*/
   1564     U_LB_INSEPERABLE = 15,
   1565     /** Renamed from the misspelled "inseperable" in Unicode 4.0.1/ICU 3.0 @stable ICU 3.0 */
   1566     U_LB_INSEPARABLE=U_LB_INSEPERABLE,/*[IN]*/
   1567     U_LB_INFIX_NUMERIC = 16,     /*[IS]*/
   1568     U_LB_LINE_FEED = 17,         /*[LF]*/
   1569     U_LB_NONSTARTER = 18,        /*[NS]*/
   1570     U_LB_NUMERIC = 19,           /*[NU]*/
   1571     U_LB_OPEN_PUNCTUATION = 20,  /*[OP]*/
   1572     U_LB_POSTFIX_NUMERIC = 21,   /*[PO]*/
   1573     U_LB_PREFIX_NUMERIC = 22,    /*[PR]*/
   1574     U_LB_QUOTATION = 23,         /*[QU]*/
   1575     U_LB_COMPLEX_CONTEXT = 24,   /*[SA]*/
   1576     U_LB_SURROGATE = 25,         /*[SG]*/
   1577     U_LB_SPACE = 26,             /*[SP]*/
   1578     U_LB_BREAK_SYMBOLS = 27,     /*[SY]*/
   1579     U_LB_ZWSPACE = 28,           /*[ZW]*/
   1580     U_LB_NEXT_LINE = 29,         /*[NL]*/ /* from here on: new in Unicode 4/ICU 2.6 */
   1581     U_LB_WORD_JOINER = 30,       /*[WJ]*/
   1582     U_LB_H2 = 31,                /*[H2]*/ /* from here on: new in Unicode 4.1/ICU 3.4 */
   1583     U_LB_H3 = 32,                /*[H3]*/
   1584     U_LB_JL = 33,                /*[JL]*/
   1585     U_LB_JT = 34,                /*[JT]*/
   1586     U_LB_JV = 35,                /*[JV]*/
   1587     U_LB_COUNT = 36
   1588 } ULineBreak;
   1589 
   1590 /**
   1591  * Numeric Type constants.
   1592  *
   1593  * @see UCHAR_NUMERIC_TYPE
   1594  * @stable ICU 2.2
   1595  */
   1596 typedef enum UNumericType {
   1597     U_NT_NONE,              /*[None]*/ /*See note !!*/
   1598     U_NT_DECIMAL,           /*[de]*/
   1599     U_NT_DIGIT,             /*[di]*/
   1600     U_NT_NUMERIC,           /*[nu]*/
   1601     U_NT_COUNT
   1602 } UNumericType;
   1603 
   1604 /**
   1605  * Hangul Syllable Type constants.
   1606  *
   1607  * @see UCHAR_HANGUL_SYLLABLE_TYPE
   1608  * @stable ICU 2.6
   1609  */
   1610 typedef enum UHangulSyllableType {
   1611     U_HST_NOT_APPLICABLE,   /*[NA]*/ /*See note !!*/
   1612     U_HST_LEADING_JAMO,     /*[L]*/
   1613     U_HST_VOWEL_JAMO,       /*[V]*/
   1614     U_HST_TRAILING_JAMO,    /*[T]*/
   1615     U_HST_LV_SYLLABLE,      /*[LV]*/
   1616     U_HST_LVT_SYLLABLE,     /*[LVT]*/
   1617     U_HST_COUNT
   1618 } UHangulSyllableType;
   1619 
   1620 /**
   1621  * Check a binary Unicode property for a code point.
   1622  *
   1623  * Unicode, especially in version 3.2, defines many more properties than the
   1624  * original set in UnicodeData.txt.
   1625  *
   1626  * The properties APIs are intended to reflect Unicode properties as defined
   1627  * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
   1628  * For details about the properties see http://www.unicode.org/ucd/ .
   1629  * For names of Unicode properties see the UCD file PropertyAliases.txt.
   1630  *
   1631  * Important: If ICU is built with UCD files from Unicode versions below 3.2,
   1632  * then properties marked with "new in Unicode 3.2" are not or not fully available.
   1633  *
   1634  * @param c Code point to test.
   1635  * @param which UProperty selector constant, identifies which binary property to check.
   1636  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT.
   1637  * @return TRUE or FALSE according to the binary Unicode property value for c.
   1638  *         Also FALSE if 'which' is out of bounds or if the Unicode version
   1639  *         does not have data for the property at all, or not for this code point.
   1640  *
   1641  * @see UProperty
   1642  * @see u_getIntPropertyValue
   1643  * @see u_getUnicodeVersion
   1644  * @stable ICU 2.1
   1645  */
   1646 U_STABLE UBool U_EXPORT2
   1647 u_hasBinaryProperty(UChar32 c, UProperty which);
   1648 
   1649 /**
   1650  * Check if a code point has the Alphabetic Unicode property.
   1651  * Same as u_hasBinaryProperty(c, UCHAR_ALPHABETIC).
   1652  * This is different from u_isalpha!
   1653  * @param c Code point to test
   1654  * @return true if the code point has the Alphabetic Unicode property, false otherwise
   1655  *
   1656  * @see UCHAR_ALPHABETIC
   1657  * @see u_isalpha
   1658  * @see u_hasBinaryProperty
   1659  * @stable ICU 2.1
   1660  */
   1661 U_STABLE UBool U_EXPORT2
   1662 u_isUAlphabetic(UChar32 c);
   1663 
   1664 /**
   1665  * Check if a code point has the Lowercase Unicode property.
   1666  * Same as u_hasBinaryProperty(c, UCHAR_LOWERCASE).
   1667  * This is different from u_islower!
   1668  * @param c Code point to test
   1669  * @return true if the code point has the Lowercase Unicode property, false otherwise
   1670  *
   1671  * @see UCHAR_LOWERCASE
   1672  * @see u_islower
   1673  * @see u_hasBinaryProperty
   1674  * @stable ICU 2.1
   1675  */
   1676 U_STABLE UBool U_EXPORT2
   1677 u_isULowercase(UChar32 c);
   1678 
   1679 /**
   1680  * Check if a code point has the Uppercase Unicode property.
   1681  * Same as u_hasBinaryProperty(c, UCHAR_UPPERCASE).
   1682  * This is different from u_isupper!
   1683  * @param c Code point to test
   1684  * @return true if the code point has the Uppercase Unicode property, false otherwise
   1685  *
   1686  * @see UCHAR_UPPERCASE
   1687  * @see u_isupper
   1688  * @see u_hasBinaryProperty
   1689  * @stable ICU 2.1
   1690  */
   1691 U_STABLE UBool U_EXPORT2
   1692 u_isUUppercase(UChar32 c);
   1693 
   1694 /**
   1695  * Check if a code point has the White_Space Unicode property.
   1696  * Same as u_hasBinaryProperty(c, UCHAR_WHITE_SPACE).
   1697  * This is different from both u_isspace and u_isWhitespace!
   1698  *
   1699  * Note: There are several ICU whitespace functions; please see the uchar.h
   1700  * file documentation for a detailed comparison.
   1701  *
   1702  * @param c Code point to test
   1703  * @return true if the code point has the White_Space Unicode property, false otherwise.
   1704  *
   1705  * @see UCHAR_WHITE_SPACE
   1706  * @see u_isWhitespace
   1707  * @see u_isspace
   1708  * @see u_isJavaSpaceChar
   1709  * @see u_hasBinaryProperty
   1710  * @stable ICU 2.1
   1711  */
   1712 U_STABLE UBool U_EXPORT2
   1713 u_isUWhiteSpace(UChar32 c);
   1714 
   1715 /**
   1716  * Get the property value for an enumerated or integer Unicode property for a code point.
   1717  * Also returns binary and mask property values.
   1718  *
   1719  * Unicode, especially in version 3.2, defines many more properties than the
   1720  * original set in UnicodeData.txt.
   1721  *
   1722  * The properties APIs are intended to reflect Unicode properties as defined
   1723  * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
   1724  * For details about the properties see http://www.unicode.org/ .
   1725  * For names of Unicode properties see the UCD file PropertyAliases.txt.
   1726  *
   1727  * Sample usage:
   1728  * UEastAsianWidth ea=(UEastAsianWidth)u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH);
   1729  * UBool b=(UBool)u_getIntPropertyValue(c, UCHAR_IDEOGRAPHIC);
   1730  *
   1731  * @param c Code point to test.
   1732  * @param which UProperty selector constant, identifies which property to check.
   1733  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
   1734  *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
   1735  *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
   1736  * @return Numeric value that is directly the property value or,
   1737  *         for enumerated properties, corresponds to the numeric value of the enumerated
   1738  *         constant of the respective property value enumeration type
   1739  *         (cast to enum type if necessary).
   1740  *         Returns 0 or 1 (for FALSE/TRUE) for binary Unicode properties.
   1741  *         Returns a bit-mask for mask properties.
   1742  *         Returns 0 if 'which' is out of bounds or if the Unicode version
   1743  *         does not have data for the property at all, or not for this code point.
   1744  *
   1745  * @see UProperty
   1746  * @see u_hasBinaryProperty
   1747  * @see u_getIntPropertyMinValue
   1748  * @see u_getIntPropertyMaxValue
   1749  * @see u_getUnicodeVersion
   1750  * @stable ICU 2.2
   1751  */
   1752 U_STABLE int32_t U_EXPORT2
   1753 u_getIntPropertyValue(UChar32 c, UProperty which);
   1754 
   1755 /**
   1756  * Get the minimum value for an enumerated/integer/binary Unicode property.
   1757  * Can be used together with u_getIntPropertyMaxValue
   1758  * to allocate arrays of UnicodeSet or similar.
   1759  *
   1760  * @param which UProperty selector constant, identifies which binary property to check.
   1761  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
   1762  *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.
   1763  * @return Minimum value returned by u_getIntPropertyValue for a Unicode property.
   1764  *         0 if the property selector is out of range.
   1765  *
   1766  * @see UProperty
   1767  * @see u_hasBinaryProperty
   1768  * @see u_getUnicodeVersion
   1769  * @see u_getIntPropertyMaxValue
   1770  * @see u_getIntPropertyValue
   1771  * @stable ICU 2.2
   1772  */
   1773 U_STABLE int32_t U_EXPORT2
   1774 u_getIntPropertyMinValue(UProperty which);
   1775 
   1776 /**
   1777  * Get the maximum value for an enumerated/integer/binary Unicode property.
   1778  * Can be used together with u_getIntPropertyMinValue
   1779  * to allocate arrays of UnicodeSet or similar.
   1780  *
   1781  * Examples for min/max values (for Unicode 3.2):
   1782  *
   1783  * - UCHAR_BIDI_CLASS:    0/18 (U_LEFT_TO_RIGHT/U_BOUNDARY_NEUTRAL)
   1784  * - UCHAR_SCRIPT:        0/45 (USCRIPT_COMMON/USCRIPT_TAGBANWA)
   1785  * - UCHAR_IDEOGRAPHIC:   0/1  (FALSE/TRUE)
   1786  *
   1787  * For undefined UProperty constant values, min/max values will be 0/-1.
   1788  *
   1789  * @param which UProperty selector constant, identifies which binary property to check.
   1790  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
   1791  *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.
   1792  * @return Maximum value returned by u_getIntPropertyValue for a Unicode property.
   1793  *         <=0 if the property selector is out of range.
   1794  *
   1795  * @see UProperty
   1796  * @see u_hasBinaryProperty
   1797  * @see u_getUnicodeVersion
   1798  * @see u_getIntPropertyMaxValue
   1799  * @see u_getIntPropertyValue
   1800  * @stable ICU 2.2
   1801  */
   1802 U_STABLE int32_t U_EXPORT2
   1803 u_getIntPropertyMaxValue(UProperty which);
   1804 
   1805 /**
   1806  * Get the numeric value for a Unicode code point as defined in the
   1807  * Unicode Character Database.
   1808  *
   1809  * A "double" return type is necessary because
   1810  * some numeric values are fractions, negative, or too large for int32_t.
   1811  *
   1812  * For characters without any numeric values in the Unicode Character Database,
   1813  * this function will return U_NO_NUMERIC_VALUE.
   1814  *
   1815  * Similar to java.lang.Character.getNumericValue(), but u_getNumericValue()
   1816  * also supports negative values, large values, and fractions,
   1817  * while Java's getNumericValue() returns values 10..35 for ASCII letters.
   1818  *
   1819  * @param c Code point to get the numeric value for.
   1820  * @return Numeric value of c, or U_NO_NUMERIC_VALUE if none is defined.
   1821  *
   1822  * @see U_NO_NUMERIC_VALUE
   1823  * @stable ICU 2.2
   1824  */
   1825 U_STABLE double U_EXPORT2
   1826 u_getNumericValue(UChar32 c);
   1827 
   1828 /**
   1829  * Special value that is returned by u_getNumericValue when
   1830  * no numeric value is defined for a code point.
   1831  *
   1832  * @see u_getNumericValue
   1833  * @stable ICU 2.2
   1834  */
   1835 #define U_NO_NUMERIC_VALUE ((double)-123456789.)
   1836 
   1837 /**
   1838  * Determines whether the specified code point has the general category "Ll"
   1839  * (lowercase letter).
   1840  *
   1841  * Same as java.lang.Character.isLowerCase().
   1842  *
   1843  * This misses some characters that are also lowercase but
   1844  * have a different general category value.
   1845  * In order to include those, use UCHAR_LOWERCASE.
   1846  *
   1847  * In addition to being equivalent to a Java function, this also serves
   1848  * as a C/POSIX migration function.
   1849  * See the comments about C/POSIX character classification functions in the
   1850  * documentation at the top of this header file.
   1851  *
   1852  * @param c the code point to be tested
   1853  * @return TRUE if the code point is an Ll lowercase letter
   1854  *
   1855  * @see UCHAR_LOWERCASE
   1856  * @see u_isupper
   1857  * @see u_istitle
   1858  * @stable ICU 2.0
   1859  */
   1860 U_STABLE UBool U_EXPORT2
   1861 u_islower(UChar32 c);
   1862 
   1863 /**
   1864  * Determines whether the specified code point has the general category "Lu"
   1865  * (uppercase letter).
   1866  *
   1867  * Same as java.lang.Character.isUpperCase().
   1868  *
   1869  * This misses some characters that are also uppercase but
   1870  * have a different general category value.
   1871  * In order to include those, use UCHAR_UPPERCASE.
   1872  *
   1873  * In addition to being equivalent to a Java function, this also serves
   1874  * as a C/POSIX migration function.
   1875  * See the comments about C/POSIX character classification functions in the
   1876  * documentation at the top of this header file.
   1877  *
   1878  * @param c the code point to be tested
   1879  * @return TRUE if the code point is an Lu uppercase letter
   1880  *
   1881  * @see UCHAR_UPPERCASE
   1882  * @see u_islower
   1883  * @see u_istitle
   1884  * @see u_tolower
   1885  * @stable ICU 2.0
   1886  */
   1887 U_STABLE UBool U_EXPORT2
   1888 u_isupper(UChar32 c);
   1889 
   1890 /**
   1891  * Determines whether the specified code point is a titlecase letter.
   1892  * True for general category "Lt" (titlecase letter).
   1893  *
   1894  * Same as java.lang.Character.isTitleCase().
   1895  *
   1896  * @param c the code point to be tested
   1897  * @return TRUE if the code point is an Lt titlecase letter
   1898  *
   1899  * @see u_isupper
   1900  * @see u_islower
   1901  * @see u_totitle
   1902  * @stable ICU 2.0
   1903  */
   1904 U_STABLE UBool U_EXPORT2
   1905 u_istitle(UChar32 c);
   1906 
   1907 /**
   1908  * Determines whether the specified code point is a digit character according to Java.
   1909  * True for characters with general category "Nd" (decimal digit numbers).
   1910  * Beginning with Unicode 4, this is the same as
   1911  * testing for the Numeric_Type of Decimal.
   1912  *
   1913  * Same as java.lang.Character.isDigit().
   1914  *
   1915  * In addition to being equivalent to a Java function, this also serves
   1916  * as a C/POSIX migration function.
   1917  * See the comments about C/POSIX character classification functions in the
   1918  * documentation at the top of this header file.
   1919  *
   1920  * @param c the code point to be tested
   1921  * @return TRUE if the code point is a digit character according to Character.isDigit()
   1922  *
   1923  * @stable ICU 2.0
   1924  */
   1925 U_STABLE UBool U_EXPORT2
   1926 u_isdigit(UChar32 c);
   1927 
   1928 /**
   1929  * Determines whether the specified code point is a letter character.
   1930  * True for general categories "L" (letters).
   1931  *
   1932  * Same as java.lang.Character.isLetter().
   1933  *
   1934  * In addition to being equivalent to a Java function, this also serves
   1935  * as a C/POSIX migration function.
   1936  * See the comments about C/POSIX character classification functions in the
   1937  * documentation at the top of this header file.
   1938  *
   1939  * @param c the code point to be tested
   1940  * @return TRUE if the code point is a letter character
   1941  *
   1942  * @see u_isdigit
   1943  * @see u_isalnum
   1944  * @stable ICU 2.0
   1945  */
   1946 U_STABLE UBool U_EXPORT2
   1947 u_isalpha(UChar32 c);
   1948 
   1949 /**
   1950  * Determines whether the specified code point is an alphanumeric character
   1951  * (letter or digit) according to Java.
   1952  * True for characters with general categories
   1953  * "L" (letters) and "Nd" (decimal digit numbers).
   1954  *
   1955  * Same as java.lang.Character.isLetterOrDigit().
   1956  *
   1957  * In addition to being equivalent to a Java function, this also serves
   1958  * as a C/POSIX migration function.
   1959  * See the comments about C/POSIX character classification functions in the
   1960  * documentation at the top of this header file.
   1961  *
   1962  * @param c the code point to be tested
   1963  * @return TRUE if the code point is an alphanumeric character according to Character.isLetterOrDigit()
   1964  *
   1965  * @stable ICU 2.0
   1966  */
   1967 U_STABLE UBool U_EXPORT2
   1968 u_isalnum(UChar32 c);
   1969 
   1970 /**
   1971  * Determines whether the specified code point is a hexadecimal digit.
   1972  * This is equivalent to u_digit(c, 16)>=0.
   1973  * True for characters with general category "Nd" (decimal digit numbers)
   1974  * as well as Latin letters a-f and A-F in both ASCII and Fullwidth ASCII.
   1975  * (That is, for letters with code points
   1976  * 0041..0046, 0061..0066, FF21..FF26, FF41..FF46.)
   1977  *
   1978  * In order to narrow the definition of hexadecimal digits to only ASCII
   1979  * characters, use (c<=0x7f && u_isxdigit(c)).
   1980  *
   1981  * This is a C/POSIX migration function.
   1982  * See the comments about C/POSIX character classification functions in the
   1983  * documentation at the top of this header file.
   1984  *
   1985  * @param c the code point to be tested
   1986  * @return TRUE if the code point is a hexadecimal digit
   1987  *
   1988  * @stable ICU 2.6
   1989  */
   1990 U_STABLE UBool U_EXPORT2
   1991 u_isxdigit(UChar32 c);
   1992 
   1993 /**
   1994  * Determines whether the specified code point is a punctuation character.
   1995  * True for characters with general categories "P" (punctuation).
   1996  *
   1997  * This is a C/POSIX migration function.
   1998  * See the comments about C/POSIX character classification functions in the
   1999  * documentation at the top of this header file.
   2000  *
   2001  * @param c the code point to be tested
   2002  * @return TRUE if the code point is a punctuation character
   2003  *
   2004  * @stable ICU 2.6
   2005  */
   2006 U_STABLE UBool U_EXPORT2
   2007 u_ispunct(UChar32 c);
   2008 
   2009 /**
   2010  * Determines whether the specified code point is a "graphic" character
   2011  * (printable, excluding spaces).
   2012  * TRUE for all characters except those with general categories
   2013  * "Cc" (control codes), "Cf" (format controls), "Cs" (surrogates),
   2014  * "Cn" (unassigned), and "Z" (separators).
   2015  *
   2016  * This is a C/POSIX migration function.
   2017  * See the comments about C/POSIX character classification functions in the
   2018  * documentation at the top of this header file.
   2019  *
   2020  * @param c the code point to be tested
   2021  * @return TRUE if the code point is a "graphic" character
   2022  *
   2023  * @stable ICU 2.6
   2024  */
   2025 U_STABLE UBool U_EXPORT2
   2026 u_isgraph(UChar32 c);
   2027 
   2028 /**
   2029  * Determines whether the specified code point is a "blank" or "horizontal space",
   2030  * a character that visibly separates words on a line.
   2031  * The following are equivalent definitions:
   2032  *
   2033  * TRUE for Unicode White_Space characters except for "vertical space controls"
   2034  * where "vertical space controls" are the following characters:
   2035  * U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS)
   2036  *
   2037  * same as
   2038  *
   2039  * TRUE for U+0009 (TAB) and characters with general category "Zs" (space separators)
   2040  * except Zero Width Space (ZWSP, U+200B).
   2041  *
   2042  * Note: There are several ICU whitespace functions; please see the uchar.h
   2043  * file documentation for a detailed comparison.
   2044  *
   2045  * This is a C/POSIX migration function.
   2046  * See the comments about C/POSIX character classification functions in the
   2047  * documentation at the top of this header file.
   2048  *
   2049  * @param c the code point to be tested
   2050  * @return TRUE if the code point is a "blank"
   2051  *
   2052  * @stable ICU 2.6
   2053  */
   2054 U_STABLE UBool U_EXPORT2
   2055 u_isblank(UChar32 c);
   2056 
   2057 /**
   2058  * Determines whether the specified code point is "defined",
   2059  * which usually means that it is assigned a character.
   2060  * True for general categories other than "Cn" (other, not assigned),
   2061  * i.e., true for all code points mentioned in UnicodeData.txt.
   2062  *
   2063  * Note that non-character code points (e.g., U+FDD0) are not "defined"
   2064  * (they are Cn), but surrogate code points are "defined" (Cs).
   2065  *
   2066  * Same as java.lang.Character.isDefined().
   2067  *
   2068  * @param c the code point to be tested
   2069  * @return TRUE if the code point is assigned a character
   2070  *
   2071  * @see u_isdigit
   2072  * @see u_isalpha
   2073  * @see u_isalnum
   2074  * @see u_isupper
   2075  * @see u_islower
   2076  * @see u_istitle
   2077  * @stable ICU 2.0
   2078  */
   2079 U_STABLE UBool U_EXPORT2
   2080 u_isdefined(UChar32 c);
   2081 
   2082 /**
   2083  * Determines if the specified character is a space character or not.
   2084  *
   2085  * Note: There are several ICU whitespace functions; please see the uchar.h
   2086  * file documentation for a detailed comparison.
   2087  *
   2088  * This is a C/POSIX migration function.
   2089  * See the comments about C/POSIX character classification functions in the
   2090  * documentation at the top of this header file.
   2091  *
   2092  * @param c    the character to be tested
   2093  * @return  true if the character is a space character; false otherwise.
   2094  *
   2095  * @see u_isJavaSpaceChar
   2096  * @see u_isWhitespace
   2097  * @see u_isUWhiteSpace
   2098  * @stable ICU 2.0
   2099  */
   2100 U_STABLE UBool U_EXPORT2
   2101 u_isspace(UChar32 c);
   2102 
   2103 /**
   2104  * Determine if the specified code point is a space character according to Java.
   2105  * True for characters with general categories "Z" (separators),
   2106  * which does not include control codes (e.g., TAB or Line Feed).
   2107  *
   2108  * Same as java.lang.Character.isSpaceChar().
   2109  *
   2110  * Note: There are several ICU whitespace functions; please see the uchar.h
   2111  * file documentation for a detailed comparison.
   2112  *
   2113  * @param c the code point to be tested
   2114  * @return TRUE if the code point is a space character according to Character.isSpaceChar()
   2115  *
   2116  * @see u_isspace
   2117  * @see u_isWhitespace
   2118  * @see u_isUWhiteSpace
   2119  * @stable ICU 2.6
   2120  */
   2121 U_STABLE UBool U_EXPORT2
   2122 u_isJavaSpaceChar(UChar32 c);
   2123 
   2124 /**
   2125  * Determines if the specified code point is a whitespace character according to Java/ICU.
   2126  * A character is considered to be a Java whitespace character if and only
   2127  * if it satisfies one of the following criteria:
   2128  *
   2129  * - It is a Unicode separator (categories "Z"), but is not
   2130  *      a no-break space (U+00A0 NBSP or U+2007 Figure Space or U+202F Narrow NBSP).
   2131  * - It is U+0009 HORIZONTAL TABULATION.
   2132  * - It is U+000A LINE FEED.
   2133  * - It is U+000B VERTICAL TABULATION.
   2134  * - It is U+000C FORM FEED.
   2135  * - It is U+000D CARRIAGE RETURN.
   2136  * - It is U+001C FILE SEPARATOR.
   2137  * - It is U+001D GROUP SEPARATOR.
   2138  * - It is U+001E RECORD SEPARATOR.
   2139  * - It is U+001F UNIT SEPARATOR.
   2140  * - It is U+0085 NEXT LINE.
   2141  *
   2142  * Same as java.lang.Character.isWhitespace() except that Java omits U+0085.
   2143  *
   2144  * Note: There are several ICU whitespace functions; please see the uchar.h
   2145  * file documentation for a detailed comparison.
   2146  *
   2147  * @param c the code point to be tested
   2148  * @return TRUE if the code point is a whitespace character according to Java/ICU
   2149  *
   2150  * @see u_isspace
   2151  * @see u_isJavaSpaceChar
   2152  * @see u_isUWhiteSpace
   2153  * @stable ICU 2.0
   2154  */
   2155 U_STABLE UBool U_EXPORT2
   2156 u_isWhitespace(UChar32 c);
   2157 
   2158 /**
   2159  * Determines whether the specified code point is a control character
   2160  * (as defined by this function).
   2161  * A control character is one of the following:
   2162  * - ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
   2163  * - U_CONTROL_CHAR (Cc)
   2164  * - U_FORMAT_CHAR (Cf)
   2165  * - U_LINE_SEPARATOR (Zl)
   2166  * - U_PARAGRAPH_SEPARATOR (Zp)
   2167  *
   2168  * This is a C/POSIX migration function.
   2169  * See the comments about C/POSIX character classification functions in the
   2170  * documentation at the top of this header file.
   2171  *
   2172  * @param c the code point to be tested
   2173  * @return TRUE if the code point is a control character
   2174  *
   2175  * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
   2176  * @see u_isprint
   2177  * @stable ICU 2.0
   2178  */
   2179 U_STABLE UBool U_EXPORT2
   2180 u_iscntrl(UChar32 c);
   2181 
   2182 /**
   2183  * Determines whether the specified code point is an ISO control code.
   2184  * True for U+0000..U+001f and U+007f..U+009f (general category "Cc").
   2185  *
   2186  * Same as java.lang.Character.isISOControl().
   2187  *
   2188  * @param c the code point to be tested
   2189  * @return TRUE if the code point is an ISO control code
   2190  *
   2191  * @see u_iscntrl
   2192  * @stable ICU 2.6
   2193  */
   2194 U_STABLE UBool U_EXPORT2
   2195 u_isISOControl(UChar32 c);
   2196 
   2197 /**
   2198  * Determines whether the specified code point is a printable character.
   2199  * True for general categories <em>other</em> than "C" (controls).
   2200  *
   2201  * This is a C/POSIX migration function.
   2202  * See the comments about C/POSIX character classification functions in the
   2203  * documentation at the top of this header file.
   2204  *
   2205  * @param c the code point to be tested
   2206  * @return TRUE if the code point is a printable character
   2207  *
   2208  * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
   2209  * @see u_iscntrl
   2210  * @stable ICU 2.0
   2211  */
   2212 U_STABLE UBool U_EXPORT2
   2213 u_isprint(UChar32 c);
   2214 
   2215 /**
   2216  * Determines whether the specified code point is a base character.
   2217  * True for general categories "L" (letters), "N" (numbers),
   2218  * "Mc" (spacing combining marks), and "Me" (enclosing marks).
   2219  *
   2220  * Note that this is different from the Unicode definition in
   2221  * chapter 3.5, conformance clause D13,
   2222  * which defines base characters to be all characters (not Cn)
   2223  * that do not graphically combine with preceding characters (M)
   2224  * and that are neither control (Cc) or format (Cf) characters.
   2225  *
   2226  * @param c the code point to be tested
   2227  * @return TRUE if the code point is a base character according to this function
   2228  *
   2229  * @see u_isalpha
   2230  * @see u_isdigit
   2231  * @stable ICU 2.0
   2232  */
   2233 U_STABLE UBool U_EXPORT2
   2234 u_isbase(UChar32 c);
   2235 
   2236 /**
   2237  * Returns the bidirectional category value for the code point,
   2238  * which is used in the Unicode bidirectional algorithm
   2239  * (UAX #9 http://www.unicode.org/reports/tr9/).
   2240  * Note that some <em>unassigned</em> code points have bidi values
   2241  * of R or AL because they are in blocks that are reserved
   2242  * for Right-To-Left scripts.
   2243  *
   2244  * Same as java.lang.Character.getDirectionality()
   2245  *
   2246  * @param c the code point to be tested
   2247  * @return the bidirectional category (UCharDirection) value
   2248  *
   2249  * @see UCharDirection
   2250  * @stable ICU 2.0
   2251  */
   2252 U_STABLE UCharDirection U_EXPORT2
   2253 u_charDirection(UChar32 c);
   2254 
   2255 /**
   2256  * Determines whether the code point has the Bidi_Mirrored property.
   2257  * This property is set for characters that are commonly used in
   2258  * Right-To-Left contexts and need to be displayed with a "mirrored"
   2259  * glyph.
   2260  *
   2261  * Same as java.lang.Character.isMirrored().
   2262  * Same as UCHAR_BIDI_MIRRORED
   2263  *
   2264  * @param c the code point to be tested
   2265  * @return TRUE if the character has the Bidi_Mirrored property
   2266  *
   2267  * @see UCHAR_BIDI_MIRRORED
   2268  * @stable ICU 2.0
   2269  */
   2270 U_STABLE UBool U_EXPORT2
   2271 u_isMirrored(UChar32 c);
   2272 
   2273 /**
   2274  * Maps the specified character to a "mirror-image" character.
   2275  * For characters with the Bidi_Mirrored property, implementations
   2276  * sometimes need a "poor man's" mapping to another Unicode
   2277  * character (code point) such that the default glyph may serve
   2278  * as the mirror-image of the default glyph of the specified
   2279  * character. This is useful for text conversion to and from
   2280  * codepages with visual order, and for displays without glyph
   2281  * selecetion capabilities.
   2282  *
   2283  * @param c the code point to be mapped
   2284  * @return another Unicode code point that may serve as a mirror-image
   2285  *         substitute, or c itself if there is no such mapping or c
   2286  *         does not have the Bidi_Mirrored property
   2287  *
   2288  * @see UCHAR_BIDI_MIRRORED
   2289  * @see u_isMirrored
   2290  * @stable ICU 2.0
   2291  */
   2292 U_STABLE UChar32 U_EXPORT2
   2293 u_charMirror(UChar32 c);
   2294 
   2295 /**
   2296  * Returns the general category value for the code point.
   2297  *
   2298  * Same as java.lang.Character.getType().
   2299  *
   2300  * @param c the code point to be tested
   2301  * @return the general category (UCharCategory) value
   2302  *
   2303  * @see UCharCategory
   2304  * @stable ICU 2.0
   2305  */
   2306 U_STABLE int8_t U_EXPORT2
   2307 u_charType(UChar32 c);
   2308 
   2309 /**
   2310  * Get a single-bit bit set for the general category of a character.
   2311  * This bit set can be compared bitwise with U_GC_SM_MASK, U_GC_L_MASK, etc.
   2312  * Same as U_MASK(u_charType(c)).
   2313  *
   2314  * @param c the code point to be tested
   2315  * @return a single-bit mask corresponding to the general category (UCharCategory) value
   2316  *
   2317  * @see u_charType
   2318  * @see UCharCategory
   2319  * @see U_GC_CN_MASK
   2320  * @stable ICU 2.1
   2321  */
   2322 #define U_GET_GC_MASK(c) U_MASK(u_charType(c))
   2323 
   2324 /**
   2325  * Callback from u_enumCharTypes(), is called for each contiguous range
   2326  * of code points c (where start<=c<limit)
   2327  * with the same Unicode general category ("character type").
   2328  *
   2329  * The callback function can stop the enumeration by returning FALSE.
   2330  *
   2331  * @param context an opaque pointer, as passed into utrie_enum()
   2332  * @param start the first code point in a contiguous range with value
   2333  * @param limit one past the last code point in a contiguous range with value
   2334  * @param type the general category for all code points in [start..limit[
   2335  * @return FALSE to stop the enumeration
   2336  *
   2337  * @stable ICU 2.1
   2338  * @see UCharCategory
   2339  * @see u_enumCharTypes
   2340  */
   2341 typedef UBool U_CALLCONV
   2342 UCharEnumTypeRange(const void *context, UChar32 start, UChar32 limit, UCharCategory type);
   2343 
   2344 /**
   2345  * Enumerate efficiently all code points with their Unicode general categories.
   2346  *
   2347  * This is useful for building data structures (e.g., UnicodeSet's),
   2348  * for enumerating all assigned code points (type!=U_UNASSIGNED), etc.
   2349  *
   2350  * For each contiguous range of code points with a given general category ("character type"),
   2351  * the UCharEnumTypeRange function is called.
   2352  * Adjacent ranges have different types.
   2353  * The Unicode Standard guarantees that the numeric value of the type is 0..31.
   2354  *
   2355  * @param enumRange a pointer to a function that is called for each contiguous range
   2356  *                  of code points with the same general category
   2357  * @param context an opaque pointer that is passed on to the callback function
   2358  *
   2359  * @stable ICU 2.1
   2360  * @see UCharCategory
   2361  * @see UCharEnumTypeRange
   2362  */
   2363 U_STABLE void U_EXPORT2
   2364 u_enumCharTypes(UCharEnumTypeRange *enumRange, const void *context);
   2365 
   2366 #if !UCONFIG_NO_NORMALIZATION
   2367 
   2368 /**
   2369  * Returns the combining class of the code point as specified in UnicodeData.txt.
   2370  *
   2371  * @param c the code point of the character
   2372  * @return the combining class of the character
   2373  * @stable ICU 2.0
   2374  */
   2375 U_STABLE uint8_t U_EXPORT2
   2376 u_getCombiningClass(UChar32 c);
   2377 
   2378 #endif
   2379 
   2380 /**
   2381  * Returns the decimal digit value of a decimal digit character.
   2382  * Such characters have the general category "Nd" (decimal digit numbers)
   2383  * and a Numeric_Type of Decimal.
   2384  *
   2385  * Unlike ICU releases before 2.6, no digit values are returned for any
   2386  * Han characters because Han number characters are often used with a special
   2387  * Chinese-style number format (with characters for powers of 10 in between)
   2388  * instead of in decimal-positional notation.
   2389  * Unicode 4 explicitly assigns Han number characters the Numeric_Type
   2390  * Numeric instead of Decimal.
   2391  * See Jitterbug 1483 for more details.
   2392  *
   2393  * Use u_getIntPropertyValue(c, UCHAR_NUMERIC_TYPE) and u_getNumericValue()
   2394  * for complete numeric Unicode properties.
   2395  *
   2396  * @param c the code point for which to get the decimal digit value
   2397  * @return the decimal digit value of c,
   2398  *         or -1 if c is not a decimal digit character
   2399  *
   2400  * @see u_getNumericValue
   2401  * @stable ICU 2.0
   2402  */
   2403 U_STABLE int32_t U_EXPORT2
   2404 u_charDigitValue(UChar32 c);
   2405 
   2406 /**
   2407  * Returns the Unicode allocation block that contains the character.
   2408  *
   2409  * @param c the code point to be tested
   2410  * @return the block value (UBlockCode) for c
   2411  *
   2412  * @see UBlockCode
   2413  * @stable ICU 2.0
   2414  */
   2415 U_STABLE UBlockCode U_EXPORT2
   2416 ublock_getCode(UChar32 c);
   2417 
   2418 /**
   2419  * Retrieve the name of a Unicode character.
   2420  * Depending on <code>nameChoice</code>, the character name written
   2421  * into the buffer is the "modern" name or the name that was defined
   2422  * in Unicode version 1.0.
   2423  * The name contains only "invariant" characters
   2424  * like A-Z, 0-9, space, and '-'.
   2425  * Unicode 1.0 names are only retrieved if they are different from the modern
   2426  * names and if the data file contains the data for them. gennames may or may
   2427  * not be called with a command line option to include 1.0 names in unames.dat.
   2428  *
   2429  * @param code The character (code point) for which to get the name.
   2430  *             It must be <code>0<=code<=0x10ffff</code>.
   2431  * @param nameChoice Selector for which name to get.
   2432  * @param buffer Destination address for copying the name.
   2433  *               The name will always be zero-terminated.
   2434  *               If there is no name, then the buffer will be set to the empty string.
   2435  * @param bufferLength <code>==sizeof(buffer)</code>
   2436  * @param pErrorCode Pointer to a UErrorCode variable;
   2437  *        check for <code>U_SUCCESS()</code> after <code>u_charName()</code>
   2438  *        returns.
   2439  * @return The length of the name, or 0 if there is no name for this character.
   2440  *         If the bufferLength is less than or equal to the length, then the buffer
   2441  *         contains the truncated name and the returned length indicates the full
   2442  *         length of the name.
   2443  *         The length does not include the zero-termination.
   2444  *
   2445  * @see UCharNameChoice
   2446  * @see u_charFromName
   2447  * @see u_enumCharNames
   2448  * @stable ICU 2.0
   2449  */
   2450 U_STABLE int32_t U_EXPORT2
   2451 u_charName(UChar32 code, UCharNameChoice nameChoice,
   2452            char *buffer, int32_t bufferLength,
   2453            UErrorCode *pErrorCode);
   2454 
   2455 /**
   2456  * Get the ISO 10646 comment for a character.
   2457  * The ISO 10646 comment is an informative field in the Unicode Character
   2458  * Database (UnicodeData.txt field 11) and is from the ISO 10646 names list.
   2459  *
   2460  * @param c The character (code point) for which to get the ISO comment.
   2461  *             It must be <code>0<=c<=0x10ffff</code>.
   2462  * @param dest Destination address for copying the comment.
   2463  *             The comment will be zero-terminated if possible.
   2464  *             If there is no comment, then the buffer will be set to the empty string.
   2465  * @param destCapacity <code>==sizeof(dest)</code>
   2466  * @param pErrorCode Pointer to a UErrorCode variable;
   2467  *        check for <code>U_SUCCESS()</code> after <code>u_getISOComment()</code>
   2468  *        returns.
   2469  * @return The length of the comment, or 0 if there is no comment for this character.
   2470  *         If the destCapacity is less than or equal to the length, then the buffer
   2471  *         contains the truncated name and the returned length indicates the full
   2472  *         length of the name.
   2473  *         The length does not include the zero-termination.
   2474  *
   2475  * @stable ICU 2.2
   2476  */
   2477 U_STABLE int32_t U_EXPORT2
   2478 u_getISOComment(UChar32 c,
   2479                 char *dest, int32_t destCapacity,
   2480                 UErrorCode *pErrorCode);
   2481 
   2482 /**
   2483  * Find a Unicode character by its name and return its code point value.
   2484  * The name is matched exactly and completely.
   2485  * If the name does not correspond to a code point, <i>pErrorCode</i>
   2486  * is set to <code>U_INVALID_CHAR_FOUND</code>.
   2487  * A Unicode 1.0 name is matched only if it differs from the modern name.
   2488  * Unicode names are all uppercase. Extended names are lowercase followed
   2489  * by an uppercase hexadecimal number, and within angle brackets.
   2490  *
   2491  * @param nameChoice Selector for which name to match.
   2492  * @param name The name to match.
   2493  * @param pErrorCode Pointer to a UErrorCode variable
   2494  * @return The Unicode value of the code point with the given name,
   2495  *         or an undefined value if there is no such code point.
   2496  *
   2497  * @see UCharNameChoice
   2498  * @see u_charName
   2499  * @see u_enumCharNames
   2500  * @stable ICU 1.7
   2501  */
   2502 U_STABLE UChar32 U_EXPORT2
   2503 u_charFromName(UCharNameChoice nameChoice,
   2504                const char *name,
   2505                UErrorCode *pErrorCode);
   2506 
   2507 /**
   2508  * Type of a callback function for u_enumCharNames() that gets called
   2509  * for each Unicode character with the code point value and
   2510  * the character name.
   2511  * If such a function returns FALSE, then the enumeration is stopped.
   2512  *
   2513  * @param context The context pointer that was passed to u_enumCharNames().
   2514  * @param code The Unicode code point for the character with this name.
   2515  * @param nameChoice Selector for which kind of names is enumerated.
   2516  * @param name The character's name, zero-terminated.
   2517  * @param length The length of the name.
   2518  * @return TRUE if the enumeration should continue, FALSE to stop it.
   2519  *
   2520  * @see UCharNameChoice
   2521  * @see u_enumCharNames
   2522  * @stable ICU 1.7
   2523  */
   2524 typedef UBool U_CALLCONV UEnumCharNamesFn(void *context,
   2525                                UChar32 code,
   2526                                UCharNameChoice nameChoice,
   2527                                const char *name,
   2528                                int32_t length);
   2529 
   2530 /**
   2531  * Enumerate all assigned Unicode characters between the start and limit
   2532  * code points (start inclusive, limit exclusive) and call a function
   2533  * for each, passing the code point value and the character name.
   2534  * For Unicode 1.0 names, only those are enumerated that differ from the
   2535  * modern names.
   2536  *
   2537  * @param start The first code point in the enumeration range.
   2538  * @param limit One more than the last code point in the enumeration range
   2539  *              (the first one after the range).
   2540  * @param fn The function that is to be called for each character name.
   2541  * @param context An arbitrary pointer that is passed to the function.
   2542  * @param nameChoice Selector for which kind of names to enumerate.
   2543  * @param pErrorCode Pointer to a UErrorCode variable
   2544  *
   2545  * @see UCharNameChoice
   2546  * @see UEnumCharNamesFn
   2547  * @see u_charName
   2548  * @see u_charFromName
   2549  * @stable ICU 1.7
   2550  */
   2551 U_STABLE void U_EXPORT2
   2552 u_enumCharNames(UChar32 start, UChar32 limit,
   2553                 UEnumCharNamesFn *fn,
   2554                 void *context,
   2555                 UCharNameChoice nameChoice,
   2556                 UErrorCode *pErrorCode);
   2557 
   2558 /**
   2559  * Return the Unicode name for a given property, as given in the
   2560  * Unicode database file PropertyAliases.txt.
   2561  *
   2562  * In addition, this function maps the property
   2563  * UCHAR_GENERAL_CATEGORY_MASK to the synthetic names "gcm" /
   2564  * "General_Category_Mask".  These names are not in
   2565  * PropertyAliases.txt.
   2566  *
   2567  * @param property UProperty selector other than UCHAR_INVALID_CODE.
   2568  *         If out of range, NULL is returned.
   2569  *
   2570  * @param nameChoice selector for which name to get.  If out of range,
   2571  *         NULL is returned.  All properties have a long name.  Most
   2572  *         have a short name, but some do not.  Unicode allows for
   2573  *         additional names; if present these will be returned by
   2574  *         U_LONG_PROPERTY_NAME + i, where i=1, 2,...
   2575  *
   2576  * @return a pointer to the name, or NULL if either the
   2577  *         property or the nameChoice is out of range.  If a given
   2578  *         nameChoice returns NULL, then all larger values of
   2579  *         nameChoice will return NULL, with one exception: if NULL is
   2580  *         returned for U_SHORT_PROPERTY_NAME, then
   2581  *         U_LONG_PROPERTY_NAME (and higher) may still return a
   2582  *         non-NULL value.  The returned pointer is valid until
   2583  *         u_cleanup() is called.
   2584  *
   2585  * @see UProperty
   2586  * @see UPropertyNameChoice
   2587  * @stable ICU 2.4
   2588  */
   2589 U_STABLE const char* U_EXPORT2
   2590 u_getPropertyName(UProperty property,
   2591                   UPropertyNameChoice nameChoice);
   2592 
   2593 /**
   2594  * Return the UProperty enum for a given property name, as specified
   2595  * in the Unicode database file PropertyAliases.txt.  Short, long, and
   2596  * any other variants are recognized.
   2597  *
   2598  * In addition, this function maps the synthetic names "gcm" /
   2599  * "General_Category_Mask" to the property
   2600  * UCHAR_GENERAL_CATEGORY_MASK.  These names are not in
   2601  * PropertyAliases.txt.
   2602  *
   2603  * @param alias the property name to be matched.  The name is compared
   2604  *         using "loose matching" as described in PropertyAliases.txt.
   2605  *
   2606  * @return a UProperty enum, or UCHAR_INVALID_CODE if the given name
   2607  *         does not match any property.
   2608  *
   2609  * @see UProperty
   2610  * @stable ICU 2.4
   2611  */
   2612 U_STABLE UProperty U_EXPORT2
   2613 u_getPropertyEnum(const char* alias);
   2614 
   2615 /**
   2616  * Return the Unicode name for a given property value, as given in the
   2617  * Unicode database file PropertyValueAliases.txt.
   2618  *
   2619  * Note: Some of the names in PropertyValueAliases.txt can only be
   2620  * retrieved using UCHAR_GENERAL_CATEGORY_MASK, not
   2621  * UCHAR_GENERAL_CATEGORY.  These include: "C" / "Other", "L" /
   2622  * "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P"
   2623  * / "Punctuation", "S" / "Symbol", and "Z" / "Separator".
   2624  *
   2625  * @param property UProperty selector constant.
   2626  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
   2627  *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
   2628  *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
   2629  *        If out of range, NULL is returned.
   2630  *
   2631  * @param value selector for a value for the given property.  If out
   2632  *         of range, NULL is returned.  In general, valid values range
   2633  *         from 0 up to some maximum.  There are a few exceptions:
   2634  *         (1.) UCHAR_BLOCK values begin at the non-zero value
   2635  *         UBLOCK_BASIC_LATIN.  (2.)  UCHAR_CANONICAL_COMBINING_CLASS
   2636  *         values are not contiguous and range from 0..240.  (3.)
   2637  *         UCHAR_GENERAL_CATEGORY_MASK values are not values of
   2638  *         UCharCategory, but rather mask values produced by
   2639  *         U_GET_GC_MASK().  This allows grouped categories such as
   2640  *         [:L:] to be represented.  Mask values range
   2641  *         non-contiguously from 1..U_GC_P_MASK.
   2642  *
   2643  * @param nameChoice selector for which name to get.  If out of range,
   2644  *         NULL is returned.  All values have a long name.  Most have
   2645  *         a short name, but some do not.  Unicode allows for
   2646  *         additional names; if present these will be returned by
   2647  *         U_LONG_PROPERTY_NAME + i, where i=1, 2,...
   2648 
   2649  * @return a pointer to the name, or NULL if either the
   2650  *         property or the nameChoice is out of range.  If a given
   2651  *         nameChoice returns NULL, then all larger values of
   2652  *         nameChoice will return NULL, with one exception: if NULL is
   2653  *         returned for U_SHORT_PROPERTY_NAME, then
   2654  *         U_LONG_PROPERTY_NAME (and higher) may still return a
   2655  *         non-NULL value.  The returned pointer is valid until
   2656  *         u_cleanup() is called.
   2657  *
   2658  * @see UProperty
   2659  * @see UPropertyNameChoice
   2660  * @stable ICU 2.4
   2661  */
   2662 U_STABLE const char* U_EXPORT2
   2663 u_getPropertyValueName(UProperty property,
   2664                        int32_t value,
   2665                        UPropertyNameChoice nameChoice);
   2666 
   2667 /**
   2668  * Return the property value integer for a given value name, as
   2669  * specified in the Unicode database file PropertyValueAliases.txt.
   2670  * Short, long, and any other variants are recognized.
   2671  *
   2672  * Note: Some of the names in PropertyValueAliases.txt will only be
   2673  * recognized with UCHAR_GENERAL_CATEGORY_MASK, not
   2674  * UCHAR_GENERAL_CATEGORY.  These include: "C" / "Other", "L" /
   2675  * "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P"
   2676  * / "Punctuation", "S" / "Symbol", and "Z" / "Separator".
   2677  *
   2678  * @param property UProperty selector constant.
   2679  *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
   2680  *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
   2681  *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
   2682  *        If out of range, UCHAR_INVALID_CODE is returned.
   2683  *
   2684  * @param alias the value name to be matched.  The name is compared
   2685  *         using "loose matching" as described in
   2686  *         PropertyValueAliases.txt.
   2687  *
   2688  * @return a value integer or UCHAR_INVALID_CODE if the given name
   2689  *         does not match any value of the given property, or if the
   2690  *         property is invalid.  Note: U CHAR_GENERAL_CATEGORY values
   2691  *         are not values of UCharCategory, but rather mask values
   2692  *         produced by U_GET_GC_MASK().  This allows grouped
   2693  *         categories such as [:L:] to be represented.
   2694  *
   2695  * @see UProperty
   2696  * @stable ICU 2.4
   2697  */
   2698 U_STABLE int32_t U_EXPORT2
   2699 u_getPropertyValueEnum(UProperty property,
   2700                        const char* alias);
   2701 
   2702 /**
   2703  * Determines if the specified character is permissible as the
   2704  * first character in an identifier according to Unicode
   2705  * (The Unicode Standard, Version 3.0, chapter 5.16 Identifiers).
   2706  * True for characters with general categories "L" (letters) and "Nl" (letter numbers).
   2707  *
   2708  * Same as java.lang.Character.isUnicodeIdentifierStart().
   2709  * Same as UCHAR_ID_START
   2710  *
   2711  * @param c the code point to be tested
   2712  * @return TRUE if the code point may start an identifier
   2713  *
   2714  * @see UCHAR_ID_START
   2715  * @see u_isalpha
   2716  * @see u_isIDPart
   2717  * @stable ICU 2.0
   2718  */
   2719 U_STABLE UBool U_EXPORT2
   2720 u_isIDStart(UChar32 c);
   2721 
   2722 /**
   2723  * Determines if the specified character is permissible
   2724  * in an identifier according to Java.
   2725  * True for characters with general categories "L" (letters),
   2726  * "Nl" (letter numbers), "Nd" (decimal digits),
   2727  * "Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and
   2728  * u_isIDIgnorable(c).
   2729  *
   2730  * Same as java.lang.Character.isUnicodeIdentifierPart().
   2731  * Almost the same as Unicode's ID_Continue (UCHAR_ID_CONTINUE)
   2732  * except that Unicode recommends to ignore Cf which is less than
   2733  * u_isIDIgnorable(c).
   2734  *
   2735  * @param c the code point to be tested
   2736  * @return TRUE if the code point may occur in an identifier according to Java
   2737  *
   2738  * @see UCHAR_ID_CONTINUE
   2739  * @see u_isIDStart
   2740  * @see u_isIDIgnorable
   2741  * @stable ICU 2.0
   2742  */
   2743 U_STABLE UBool U_EXPORT2
   2744 u_isIDPart(UChar32 c);
   2745 
   2746 /**
   2747  * Determines if the specified character should be regarded
   2748  * as an ignorable character in an identifier,
   2749  * according to Java.
   2750  * True for characters with general category "Cf" (format controls) as well as
   2751  * non-whitespace ISO controls
   2752  * (U+0000..U+0008, U+000E..U+001B, U+007F..U+0084, U+0086..U+009F).
   2753  *
   2754  * Same as java.lang.Character.isIdentifierIgnorable()
   2755  * except that Java also returns TRUE for U+0085 Next Line
   2756  * (it omits U+0085 from whitespace ISO controls).
   2757  *
   2758  * Note that Unicode just recommends to ignore Cf (format controls).
   2759  *
   2760  * @param c the code point to be tested
   2761  * @return TRUE if the code point is ignorable in identifiers according to Java
   2762  *
   2763  * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
   2764  * @see u_isIDStart
   2765  * @see u_isIDPart
   2766  * @stable ICU 2.0
   2767  */
   2768 U_STABLE UBool U_EXPORT2
   2769 u_isIDIgnorable(UChar32 c);
   2770 
   2771 /**
   2772  * Determines if the specified character is permissible as the
   2773  * first character in a Java identifier.
   2774  * In addition to u_isIDStart(c), true for characters with
   2775  * general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).
   2776  *
   2777  * Same as java.lang.Character.isJavaIdentifierStart().
   2778  *
   2779  * @param c the code point to be tested
   2780  * @return TRUE if the code point may start a Java identifier
   2781  *
   2782  * @see     u_isJavaIDPart
   2783  * @see     u_isalpha
   2784  * @see     u_isIDStart
   2785  * @stable ICU 2.0
   2786  */
   2787 U_STABLE UBool U_EXPORT2
   2788 u_isJavaIDStart(UChar32 c);
   2789 
   2790 /**
   2791  * Determines if the specified character is permissible
   2792  * in a Java identifier.
   2793  * In addition to u_isIDPart(c), true for characters with
   2794  * general category "Sc" (currency symbols).
   2795  *
   2796  * Same as java.lang.Character.isJavaIdentifierPart().
   2797  *
   2798  * @param c the code point to be tested
   2799  * @return TRUE if the code point may occur in a Java identifier
   2800  *
   2801  * @see     u_isIDIgnorable
   2802  * @see     u_isJavaIDStart
   2803  * @see     u_isalpha
   2804  * @see     u_isdigit
   2805  * @see     u_isIDPart
   2806  * @stable ICU 2.0
   2807  */
   2808 U_STABLE UBool U_EXPORT2
   2809 u_isJavaIDPart(UChar32 c);
   2810 
   2811 /**
   2812  * The given character is mapped to its lowercase equivalent according to
   2813  * UnicodeData.txt; if the character has no lowercase equivalent, the character
   2814  * itself is returned.
   2815  *
   2816  * Same as java.lang.Character.toLowerCase().
   2817  *
   2818  * This function only returns the simple, single-code point case mapping.
   2819  * Full case mappings should be used whenever possible because they produce
   2820  * better results by working on whole strings.
   2821  * They take into account the string context and the language and can map
   2822  * to a result string with a different length as appropriate.
   2823  * Full case mappings are applied by the string case mapping functions,
   2824  * see ustring.h and the UnicodeString class.
   2825  * See also the User Guide chapter on C/POSIX migration:
   2826  * http://icu-project.org/userguide/posix.html#case_mappings
   2827  *
   2828  * @param c the code point to be mapped
   2829  * @return the Simple_Lowercase_Mapping of the code point, if any;
   2830  *         otherwise the code point itself.
   2831  * @stable ICU 2.0
   2832  */
   2833 U_STABLE UChar32 U_EXPORT2
   2834 u_tolower(UChar32 c);
   2835 
   2836 /**
   2837  * The given character is mapped to its uppercase equivalent according to UnicodeData.txt;
   2838  * if the character has no uppercase equivalent, the character itself is
   2839  * returned.
   2840  *
   2841  * Same as java.lang.Character.toUpperCase().
   2842  *
   2843  * This function only returns the simple, single-code point case mapping.
   2844  * Full case mappings should be used whenever possible because they produce
   2845  * better results by working on whole strings.
   2846  * They take into account the string context and the language and can map
   2847  * to a result string with a different length as appropriate.
   2848  * Full case mappings are applied by the string case mapping functions,
   2849  * see ustring.h and the UnicodeString class.
   2850  * See also the User Guide chapter on C/POSIX migration:
   2851  * http://icu-project.org/userguide/posix.html#case_mappings
   2852  *
   2853  * @param c the code point to be mapped
   2854  * @return the Simple_Uppercase_Mapping of the code point, if any;
   2855  *         otherwise the code point itself.
   2856  * @stable ICU 2.0
   2857  */
   2858 U_STABLE UChar32 U_EXPORT2
   2859 u_toupper(UChar32 c);
   2860 
   2861 /**
   2862  * The given character is mapped to its titlecase equivalent
   2863  * according to UnicodeData.txt;
   2864  * if none is defined, the character itself is returned.
   2865  *
   2866  * Same as java.lang.Character.toTitleCase().
   2867  *
   2868  * This function only returns the simple, single-code point case mapping.
   2869  * Full case mappings should be used whenever possible because they produce
   2870  * better results by working on whole strings.
   2871  * They take into account the string context and the language and can map
   2872  * to a result string with a different length as appropriate.
   2873  * Full case mappings are applied by the string case mapping functions,
   2874  * see ustring.h and the UnicodeString class.
   2875  * See also the User Guide chapter on C/POSIX migration:
   2876  * http://icu-project.org/userguide/posix.html#case_mappings
   2877  *
   2878  * @param c the code point to be mapped
   2879  * @return the Simple_Titlecase_Mapping of the code point, if any;
   2880  *         otherwise the code point itself.
   2881  * @stable ICU 2.0
   2882  */
   2883 U_STABLE UChar32 U_EXPORT2
   2884 u_totitle(UChar32 c);
   2885 
   2886 /** Option value for case folding: use default mappings defined in CaseFolding.txt. @stable ICU 2.0 */
   2887 #define U_FOLD_CASE_DEFAULT 0
   2888 
   2889 /**
   2890  * Option value for case folding:
   2891  *
   2892  * Use the modified set of mappings provided in CaseFolding.txt to handle dotted I
   2893  * and dotless i appropriately for Turkic languages (tr, az).
   2894  *
   2895  * Before Unicode 3.2, CaseFolding.txt contains mappings marked with 'I' that
   2896  * are to be included for default mappings and
   2897  * excluded for the Turkic-specific mappings.
   2898  *
   2899  * Unicode 3.2 CaseFolding.txt instead contains mappings marked with 'T' that
   2900  * are to be excluded for default mappings and
   2901  * included for the Turkic-specific mappings.
   2902  *
   2903  * @stable ICU 2.0
   2904  */
   2905 #define U_FOLD_CASE_EXCLUDE_SPECIAL_I 1
   2906 
   2907 /**
   2908  * The given character is mapped to its case folding equivalent according to
   2909  * UnicodeData.txt and CaseFolding.txt;
   2910  * if the character has no case folding equivalent, the character
   2911  * itself is returned.
   2912  *
   2913  * This function only returns the simple, single-code point case mapping.
   2914  * Full case mappings should be used whenever possible because they produce
   2915  * better results by working on whole strings.
   2916  * They take into account the string context and the language and can map
   2917  * to a result string with a different length as appropriate.
   2918  * Full case mappings are applied by the string case mapping functions,
   2919  * see ustring.h and the UnicodeString class.
   2920  * See also the User Guide chapter on C/POSIX migration:
   2921  * http://icu-project.org/userguide/posix.html#case_mappings
   2922  *
   2923  * @param c the code point to be mapped
   2924  * @param options Either U_FOLD_CASE_DEFAULT or U_FOLD_CASE_EXCLUDE_SPECIAL_I
   2925  * @return the Simple_Case_Folding of the code point, if any;
   2926  *         otherwise the code point itself.
   2927  * @stable ICU 2.0
   2928  */
   2929 U_STABLE UChar32 U_EXPORT2
   2930 u_foldCase(UChar32 c, uint32_t options);
   2931 
   2932 /**
   2933  * Returns the decimal digit value of the code point in the
   2934  * specified radix.
   2935  *
   2936  * If the radix is not in the range <code>2<=radix<=36</code> or if the
   2937  * value of <code>c</code> is not a valid digit in the specified
   2938  * radix, <code>-1</code> is returned. A character is a valid digit
   2939  * if at least one of the following is true:
   2940  * <ul>
   2941  * <li>The character has a decimal digit value.
   2942  *     Such characters have the general category "Nd" (decimal digit numbers)
   2943  *     and a Numeric_Type of Decimal.
   2944  *     In this case the value is the character's decimal digit value.</li>
   2945  * <li>The character is one of the uppercase Latin letters
   2946  *     <code>'A'</code> through <code>'Z'</code>.
   2947  *     In this case the value is <code>c-'A'+10</code>.</li>
   2948  * <li>The character is one of the lowercase Latin letters
   2949  *     <code>'a'</code> through <code>'z'</code>.
   2950  *     In this case the value is <code>ch-'a'+10</code>.</li>
   2951  * <li>Latin letters from both the ASCII range (0061..007A, 0041..005A)
   2952  *     as well as from the Fullwidth ASCII range (FF41..FF5A, FF21..FF3A)
   2953  *     are recognized.</li>
   2954  * </ul>
   2955  *
   2956  * Same as java.lang.Character.digit().
   2957  *
   2958  * @param   ch      the code point to be tested.
   2959  * @param   radix   the radix.
   2960  * @return  the numeric value represented by the character in the
   2961  *          specified radix,
   2962  *          or -1 if there is no value or if the value exceeds the radix.
   2963  *
   2964  * @see     UCHAR_NUMERIC_TYPE
   2965  * @see     u_forDigit
   2966  * @see     u_charDigitValue
   2967  * @see     u_isdigit
   2968  * @stable ICU 2.0
   2969  */
   2970 U_STABLE int32_t U_EXPORT2
   2971 u_digit(UChar32 ch, int8_t radix);
   2972 
   2973 /**
   2974  * Determines the character representation for a specific digit in
   2975  * the specified radix. If the value of <code>radix</code> is not a
   2976  * valid radix, or the value of <code>digit</code> is not a valid
   2977  * digit in the specified radix, the null character
   2978  * (<code>U+0000</code>) is returned.
   2979  * <p>
   2980  * The <code>radix</code> argument is valid if it is greater than or
   2981  * equal to 2 and less than or equal to 36.
   2982  * The <code>digit</code> argument is valid if
   2983  * <code>0 <= digit < radix</code>.
   2984  * <p>
   2985  * If the digit is less than 10, then
   2986  * <code>'0' + digit</code> is returned. Otherwise, the value
   2987  * <code>'a' + digit - 10</code> is returned.
   2988  *
   2989  * Same as java.lang.Character.forDigit().
   2990  *
   2991  * @param   digit   the number to convert to a character.
   2992  * @param   radix   the radix.
   2993  * @return  the <code>char</code> representation of the specified digit
   2994  *          in the specified radix.
   2995  *
   2996  * @see     u_digit
   2997  * @see     u_charDigitValue
   2998  * @see     u_isdigit
   2999  * @stable ICU 2.0
   3000  */
   3001 U_STABLE UChar32 U_EXPORT2
   3002 u_forDigit(int32_t digit, int8_t radix);
   3003 
   3004 /**
   3005  * Get the "age" of the code point.
   3006  * The "age" is the Unicode version when the code point was first
   3007  * designated (as a non-character or for Private Use)
   3008  * or assigned a character.
   3009  * This can be useful to avoid emitting code points to receiving
   3010  * processes that do not accept newer characters.
   3011  * The data is from the UCD file DerivedAge.txt.
   3012  *
   3013  * @param c The code point.
   3014  * @param versionArray The Unicode version number array, to be filled in.
   3015  *
   3016  * @stable ICU 2.1
   3017  */
   3018 U_STABLE void U_EXPORT2
   3019 u_charAge(UChar32 c, UVersionInfo versionArray);
   3020 
   3021 /**
   3022  * Gets the Unicode version information.
   3023  * The version array is filled in with the version information
   3024  * for the Unicode standard that is currently used by ICU.
   3025  * For example, Unicode version 3.1.1 is represented as an array with
   3026  * the values { 3, 1, 1, 0 }.
   3027  *
   3028  * @param versionArray an output array that will be filled in with
   3029  *                     the Unicode version number
   3030  * @stable ICU 2.0
   3031  */
   3032 U_STABLE void U_EXPORT2
   3033 u_getUnicodeVersion(UVersionInfo versionArray);
   3034 
   3035 /**
   3036  * Get the FC_NFKC_Closure property string for a character.
   3037  * See Unicode Standard Annex #15 for details, search for "FC_NFKC_Closure"
   3038  * or for "FNC": http://www.unicode.org/reports/tr15/
   3039  *
   3040  * @param c The character (code point) for which to get the FC_NFKC_Closure string.
   3041  *             It must be <code>0<=c<=0x10ffff</code>.
   3042  * @param dest Destination address for copying the string.
   3043  *             The string will be zero-terminated if possible.
   3044  *             If there is no FC_NFKC_Closure string,
   3045  *             then the buffer will be set to the empty string.
   3046  * @param destCapacity <code>==sizeof(dest)</code>
   3047  * @param pErrorCode Pointer to a UErrorCode variable.
   3048  * @return The length of the string, or 0 if there is no FC_NFKC_Closure string for this character.
   3049  *         If the destCapacity is less than or equal to the length, then the buffer
   3050  *         contains the truncated name and the returned length indicates the full
   3051  *         length of the name.
   3052  *         The length does not include the zero-termination.
   3053  *
   3054  * @stable ICU 2.2
   3055  */
   3056 U_STABLE int32_t U_EXPORT2
   3057 u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode);
   3058 
   3059 U_CDECL_END
   3060 
   3061 #endif /*_UCHAR*/
   3062 /*eof*/
   3063