1/*
2**********************************************************************
3*   Copyright (C) 1997-2004, 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
28U_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 "4.0.1"
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://oss.software.ibm.com/icu/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 1.4.1 java.lang.Character documentation
64 * at http://java.sun.com/j2se/1.4.1/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 * A summary of the behavior of some C/POSIX character classification implementations
81 * for Unicode is available at http://oss.software.ibm.com/cvs/icu/~checkout~/icuhtml/design/posix_classes.html
82 *
83 * <strong>Important</strong>:
84 * The behavior of the ICU C/POSIX-style character classification
85 * functions is subject to change according to discussion of the above summary.
86 *
87 * Note: There are several ICU whitespace functions.
88 * Comparison:
89 * - u_isUWhiteSpace=UCHAR_WHITE_SPACE: Unicode White_Space property;
90 *       most of general categories "Z" (separators) + most whitespace ISO controls
91 *       (including no-break spaces, but excluding IS1..IS4 and ZWSP)
92 * - u_isWhitespace: Java isWhitespace; Z + whitespace ISO controls but excluding no-break spaces
93 * - u_isJavaSpaceChar: Java isSpaceChar; just Z (including no-break spaces)
94 * - u_isspace: Z + whitespace ISO controls (including no-break spaces)
95 * - u_isblank: "horizontal spaces" = TAB + Zs - ZWSP
96 */
97
98/**
99 * Constants.
100 */
101
102/** The lowest Unicode code point value. Code points are non-negative. @stable ICU 2.0 */
103#define UCHAR_MIN_VALUE 0
104
105/**
106 * The highest Unicode code point value (scalar value) according to
107 * The Unicode Standard. This is a 21-bit value (20.1 bits, rounded up).
108 * For a single character, UChar32 is a simple type that can hold any code point value.
109 *
110 * @see UChar32
111 * @stable ICU 2.0
112 */
113#define UCHAR_MAX_VALUE 0x10ffff
114
115/**
116 * Get a single-bit bit set (a flag) from a bit number 0..31.
117 * @stable ICU 2.1
118 */
119#define U_MASK(x) ((uint32_t)1<<(x))
120
121/*
122 * !! Note: Several comments in this file are machine-read by the
123 * genpname tool.  These comments describe the correspondence between
124 * icu enum constants and UCD entities.  Do not delete them.  Update
125 * these comments as needed.
126 *
127 * Any comment of the form "/ *[name]* /" (spaces added) is such
128 * a comment.
129 *
130 * The U_JG_* and U_GC_*_MASK constants are matched by their symbolic
131 * name, which must match PropertyValueAliases.txt.
132 */
133
134/**
135 * Selection constants for Unicode properties.
136 * These constants are used in functions like u_hasBinaryProperty to select
137 * one of the Unicode properties.
138 *
139 * The properties APIs are intended to reflect Unicode properties as defined
140 * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
141 * For details about the properties see http://www.unicode.org/ucd/ .
142 * For names of Unicode properties see the UCD file PropertyAliases.txt.
143 *
144 * Important: If ICU is built with UCD files from Unicode versions below, e.g., 3.2,
145 * then properties marked with "new in Unicode 3.2" are not or not fully available.
146 * Check u_getUnicodeVersion to be sure.
147 *
148 * @see u_hasBinaryProperty
149 * @see u_getIntPropertyValue
150 * @see u_getUnicodeVersion
151 * @stable ICU 2.1
152 */
153typedef enum UProperty {
154    /*  See note !!.  Comments of the form "Binary property Dash",
155        "Enumerated property Script", "Double property Numeric_Value",
156        and "String property Age" are read by genpname. */
157
158    /*  Note: Place UCHAR_ALPHABETIC before UCHAR_BINARY_START so that
159    debuggers display UCHAR_ALPHABETIC as the symbolic name for 0,
160    rather than UCHAR_BINARY_START.  Likewise for other *_START
161    identifiers. */
162
163    /** Binary property Alphabetic. Same as u_isUAlphabetic, different from u_isalpha.
164        Lu+Ll+Lt+Lm+Lo+Nl+Other_Alphabetic @stable ICU 2.1 */
165    UCHAR_ALPHABETIC=0,
166    /** First constant for binary Unicode properties. @stable ICU 2.1 */
167    UCHAR_BINARY_START=UCHAR_ALPHABETIC,
168    /** Binary property ASCII_Hex_Digit. 0-9 A-F a-f @stable ICU 2.1 */
169    UCHAR_ASCII_HEX_DIGIT,
170    /** Binary property Bidi_Control.
171        Format controls which have specific functions
172        in the Bidi Algorithm. @stable ICU 2.1 */
173    UCHAR_BIDI_CONTROL,
174    /** Binary property Bidi_Mirrored.
175        Characters that may change display in RTL text.
176        Same as u_isMirrored.
177        See Bidi Algorithm, UTR 9. @stable ICU 2.1 */
178    UCHAR_BIDI_MIRRORED,
179    /** Binary property Dash. Variations of dashes. @stable ICU 2.1 */
180    UCHAR_DASH,
181    /** Binary property Default_Ignorable_Code_Point (new in Unicode 3.2).
182        Ignorable in most processing.
183        <2060..206F, FFF0..FFFB, E0000..E0FFF>+Other_Default_Ignorable_Code_Point+(Cf+Cc+Cs-White_Space) @stable ICU 2.1 */
184    UCHAR_DEFAULT_IGNORABLE_CODE_POINT,
185    /** Binary property Deprecated (new in Unicode 3.2).
186        The usage of deprecated characters is strongly discouraged. @stable ICU 2.1 */
187    UCHAR_DEPRECATED,
188    /** Binary property Diacritic. Characters that linguistically modify
189        the meaning of another character to which they apply. @stable ICU 2.1 */
190    UCHAR_DIACRITIC,
191    /** Binary property Extender.
192        Extend the value or shape of a preceding alphabetic character,
193        e.g., length and iteration marks. @stable ICU 2.1 */
194    UCHAR_EXTENDER,
195    /** Binary property Full_Composition_Exclusion.
196        CompositionExclusions.txt+Singleton Decompositions+
197        Non-Starter Decompositions. @stable ICU 2.1 */
198    UCHAR_FULL_COMPOSITION_EXCLUSION,
199    /** Binary property Grapheme_Base (new in Unicode 3.2).
200        For programmatic determination of grapheme cluster boundaries.
201        [0..10FFFF]-Cc-Cf-Cs-Co-Cn-Zl-Zp-Grapheme_Link-Grapheme_Extend-CGJ @stable ICU 2.1 */
202    UCHAR_GRAPHEME_BASE,
203    /** Binary property Grapheme_Extend (new in Unicode 3.2).
204        For programmatic determination of grapheme cluster boundaries.
205        Me+Mn+Mc+Other_Grapheme_Extend-Grapheme_Link-CGJ @stable ICU 2.1 */
206    UCHAR_GRAPHEME_EXTEND,
207    /** Binary property Grapheme_Link (new in Unicode 3.2).
208        For programmatic determination of grapheme cluster boundaries. @stable ICU 2.1 */
209    UCHAR_GRAPHEME_LINK,
210    /** Binary property Hex_Digit.
211        Characters commonly used for hexadecimal numbers. @stable ICU 2.1 */
212    UCHAR_HEX_DIGIT,
213    /** Binary property Hyphen. Dashes used to mark connections
214        between pieces of words, plus the Katakana middle dot. @stable ICU 2.1 */
215    UCHAR_HYPHEN,
216    /** Binary property ID_Continue.
217        Characters that can continue an identifier.
218        DerivedCoreProperties.txt also says "NOTE: Cf characters should be filtered out."
219        ID_Start+Mn+Mc+Nd+Pc @stable ICU 2.1 */
220    UCHAR_ID_CONTINUE,
221    /** Binary property ID_Start.
222        Characters that can start an identifier.
223        Lu+Ll+Lt+Lm+Lo+Nl @stable ICU 2.1 */
224    UCHAR_ID_START,
225    /** Binary property Ideographic.
226        CJKV ideographs. @stable ICU 2.1 */
227    UCHAR_IDEOGRAPHIC,
228    /** Binary property IDS_Binary_Operator (new in Unicode 3.2).
229        For programmatic determination of
230        Ideographic Description Sequences. @stable ICU 2.1 */
231    UCHAR_IDS_BINARY_OPERATOR,
232    /** Binary property IDS_Trinary_Operator (new in Unicode 3.2).
233        For programmatic determination of
234        Ideographic Description Sequences. @stable ICU 2.1 */
235    UCHAR_IDS_TRINARY_OPERATOR,
236    /** Binary property Join_Control.
237        Format controls for cursive joining and ligation. @stable ICU 2.1 */
238    UCHAR_JOIN_CONTROL,
239    /** Binary property Logical_Order_Exception (new in Unicode 3.2).
240        Characters that do not use logical order and
241        require special handling in most processing. @stable ICU 2.1 */
242    UCHAR_LOGICAL_ORDER_EXCEPTION,
243    /** Binary property Lowercase. Same as u_isULowercase, different from u_islower.
244        Ll+Other_Lowercase @stable ICU 2.1 */
245    UCHAR_LOWERCASE,
246    /** Binary property Math. Sm+Other_Math @stable ICU 2.1 */
247    UCHAR_MATH,
248    /** Binary property Noncharacter_Code_Point.
249        Code points that are explicitly defined as illegal
250        for the encoding of characters. @stable ICU 2.1 */
251    UCHAR_NONCHARACTER_CODE_POINT,
252    /** Binary property Quotation_Mark. @stable ICU 2.1 */
253    UCHAR_QUOTATION_MARK,
254    /** Binary property Radical (new in Unicode 3.2).
255        For programmatic determination of
256        Ideographic Description Sequences. @stable ICU 2.1 */
257    UCHAR_RADICAL,
258    /** Binary property Soft_Dotted (new in Unicode 3.2).
259        Characters with a "soft dot", like i or j.
260        An accent placed on these characters causes
261        the dot to disappear. @stable ICU 2.1 */
262    UCHAR_SOFT_DOTTED,
263    /** Binary property Terminal_Punctuation.
264        Punctuation characters that generally mark
265        the end of textual units. @stable ICU 2.1 */
266    UCHAR_TERMINAL_PUNCTUATION,
267    /** Binary property Unified_Ideograph (new in Unicode 3.2).
268        For programmatic determination of
269        Ideographic Description Sequences. @stable ICU 2.1 */
270    UCHAR_UNIFIED_IDEOGRAPH,
271    /** Binary property Uppercase. Same as u_isUUppercase, different from u_isupper.
272        Lu+Other_Uppercase @stable ICU 2.1 */
273    UCHAR_UPPERCASE,
274    /** Binary property White_Space.
275        Same as u_isUWhiteSpace, different from u_isspace and u_isWhitespace.
276        Space characters+TAB+CR+LF-ZWSP-ZWNBSP @stable ICU 2.1 */
277    UCHAR_WHITE_SPACE,
278    /** Binary property XID_Continue.
279        ID_Continue modified to allow closure under
280        normalization forms NFKC and NFKD. @stable ICU 2.1 */
281    UCHAR_XID_CONTINUE,
282    /** Binary property XID_Start. ID_Start modified to allow
283        closure under normalization forms NFKC and NFKD. @stable ICU 2.1 */
284    UCHAR_XID_START,
285    /** Binary property Case_Sensitive. Either the source of a case
286        mapping or _in_ the target of a case mapping. Not the same as
287        the general category Cased_Letter. @stable ICU 2.6 */
288    UCHAR_CASE_SENSITIVE,
289    /** Binary property STerm (new in Unicode 4.0.1).
290        Sentence Terminal. Used in UAX #29: Text Boundaries
291        (http://www.unicode.org/reports/tr29/)
292        @draft ICU 3.0 */
293    UCHAR_S_TERM,
294    /** Binary property Variation_Selector (new in Unicode 4.0.1).
295        Indicates all those characters that qualify as Variation Selectors.
296        For details on the behavior of these characters,
297        see StandardizedVariants.html and 15.6 Variation Selectors.
298        @draft ICU 3.0 */
299    UCHAR_VARIATION_SELECTOR,
300    /** Binary property NFD_Inert.
301        ICU-specific property for characters that are inert under NFD,
302        i.e., they do not interact with adjacent characters.
303        Used for example in normalizing transforms in incremental mode
304        to find the boundary of safely normalizable text despite possible
305        text additions.
306
307        There is one such property per normalization form.
308        These properties are computed as follows - an inert character is:
309        a) unassigned, or ALL of the following:
310        b) of combining class 0.
311        c) not decomposed by this normalization form.
312        AND if NFC or NFKC,
313        d) can never compose with a previous character.
314        e) can never compose with a following character.
315        f) can never change if another character is added.
316           Example: a-breve might satisfy all but f, but if you
317           add an ogonek it changes to a-ogonek + breve
318
319        See also com.ibm.text.UCD.NFSkippable in the ICU4J repository,
320        and icu/source/common/unormimp.h .
321        @draft ICU 3.0 */
322    UCHAR_NFD_INERT,
323    /** Binary property NFKD_Inert.
324        ICU-specific property for characters that are inert under NFKD,
325        i.e., they do not interact with adjacent characters.
326        Used for example in normalizing transforms in incremental mode
327        to find the boundary of safely normalizable text despite possible
328        text additions.
329        @see UCHAR_NFD_INERT
330        @draft ICU 3.0 */
331    UCHAR_NFKD_INERT,
332    /** Binary property NFC_Inert.
333        ICU-specific property for characters that are inert under NFC,
334        i.e., they do not interact with adjacent characters.
335        Used for example in normalizing transforms in incremental mode
336        to find the boundary of safely normalizable text despite possible
337        text additions.
338        @see UCHAR_NFD_INERT
339        @draft ICU 3.0 */
340    UCHAR_NFC_INERT,
341    /** Binary property NFKC_Inert.
342        ICU-specific property for characters that are inert under NFKC,
343        i.e., they do not interact with adjacent characters.
344        Used for example in normalizing transforms in incremental mode
345        to find the boundary of safely normalizable text despite possible
346        text additions.
347        @see UCHAR_NFD_INERT
348        @draft ICU 3.0 */
349    UCHAR_NFKC_INERT,
350    /** Binary Property Segment_Starter.
351        ICU-specific property for characters that are starters in terms of
352        Unicode normalization and combining character sequences.
353        They have ccc=0 and do not occur in non-initial position of the
354        canonical decomposition of any character
355        (like " in NFD(a-umlaut) and a Jamo T in an NFD(Hangul LVT)).
356        ICU uses this property for segmenting a string for generating a set of
357        canonically equivalent strings, e.g. for canonical closure while
358        processing collation tailoring rules.
359        @draft ICU 3.0 */
360    UCHAR_SEGMENT_STARTER,
361    /** One more than the last constant for binary Unicode properties. @stable ICU 2.1 */
362    UCHAR_BINARY_LIMIT,
363
364    /** Enumerated property Bidi_Class.
365        Same as u_charDirection, returns UCharDirection values. @stable ICU 2.2 */
366    UCHAR_BIDI_CLASS=0x1000,
367    /** First constant for enumerated/integer Unicode properties. @stable ICU 2.2 */
368    UCHAR_INT_START=UCHAR_BIDI_CLASS,
369    /** Enumerated property Block.
370        Same as ublock_getCode, returns UBlockCode values. @stable ICU 2.2 */
371    UCHAR_BLOCK,
372    /** Enumerated property Canonical_Combining_Class.
373        Same as u_getCombiningClass, returns 8-bit numeric values. @stable ICU 2.2 */
374    UCHAR_CANONICAL_COMBINING_CLASS,
375    /** Enumerated property Decomposition_Type.
376        Returns UDecompositionType values. @stable ICU 2.2 */
377    UCHAR_DECOMPOSITION_TYPE,
378    /** Enumerated property East_Asian_Width.
379        See http://www.unicode.org/reports/tr11/
380        Returns UEastAsianWidth values. @stable ICU 2.2 */
381    UCHAR_EAST_ASIAN_WIDTH,
382    /** Enumerated property General_Category.
383        Same as u_charType, returns UCharCategory values. @stable ICU 2.2 */
384    UCHAR_GENERAL_CATEGORY,
385    /** Enumerated property Joining_Group.
386        Returns UJoiningGroup values. @stable ICU 2.2 */
387    UCHAR_JOINING_GROUP,
388    /** Enumerated property Joining_Type.
389        Returns UJoiningType values. @stable ICU 2.2 */
390    UCHAR_JOINING_TYPE,
391    /** Enumerated property Line_Break.
392        Returns ULineBreak values. @stable ICU 2.2 */
393    UCHAR_LINE_BREAK,
394    /** Enumerated property Numeric_Type.
395        Returns UNumericType values. @stable ICU 2.2 */
396    UCHAR_NUMERIC_TYPE,
397    /** Enumerated property Script.
398        Same as uscript_getScript, returns UScriptCode values. @stable ICU 2.2 */
399    UCHAR_SCRIPT,
400    /** Enumerated property Hangul_Syllable_Type, new in Unicode 4.
401        Returns UHangulSyllableType values. @stable ICU 2.6 */
402    UCHAR_HANGUL_SYLLABLE_TYPE,
403    /** Enumerated property NFD_Quick_Check.
404        Returns UNormalizationCheckResult values. @draft ICU 3.0 */
405    UCHAR_NFD_QUICK_CHECK,
406    /** Enumerated property NFKD_Quick_Check.
407        Returns UNormalizationCheckResult values. @draft ICU 3.0 */
408    UCHAR_NFKD_QUICK_CHECK,
409    /** Enumerated property NFC_Quick_Check.
410        Returns UNormalizationCheckResult values. @draft ICU 3.0 */
411    UCHAR_NFC_QUICK_CHECK,
412    /** Enumerated property NFKC_Quick_Check.
413        Returns UNormalizationCheckResult values. @draft ICU 3.0 */
414    UCHAR_NFKC_QUICK_CHECK,
415    /** Enumerated property Lead_Canonical_Combining_Class.
416        ICU-specific property for the ccc of the first code point
417        of the decomposition, or lccc(c)=ccc(NFD(c)[0]).
418        Useful for checking for canonically ordered text;
419        see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD .
420        Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. @draft ICU 3.0 */
421    UCHAR_LEAD_CANONICAL_COMBINING_CLASS,
422    /** Enumerated property Trail_Canonical_Combining_Class.
423        ICU-specific property for the ccc of the last code point
424        of the decomposition, or tccc(c)=ccc(NFD(c)[last]).
425        Useful for checking for canonically ordered text;
426        see UNORM_FCD and http://www.unicode.org/notes/tn5/#FCD .
427        Returns 8-bit numeric values like UCHAR_CANONICAL_COMBINING_CLASS. @draft ICU 3.0 */
428    UCHAR_TRAIL_CANONICAL_COMBINING_CLASS,
429    /** One more than the last constant for enumerated/integer Unicode properties. @stable ICU 2.2 */
430    UCHAR_INT_LIMIT,
431
432    /** Bitmask property General_Category_Mask.
433        This is the General_Category property returned as a bit mask.
434        When used in u_getIntPropertyValue(c), same as U_MASK(u_charType(c)),
435        returns bit masks for UCharCategory values where exactly one bit is set.
436        When used with u_getPropertyValueName() and u_getPropertyValueEnum(),
437        a multi-bit mask is used for sets of categories like "Letters".
438        Mask values should be cast to uint32_t.
439        @stable ICU 2.4 */
440    UCHAR_GENERAL_CATEGORY_MASK=0x2000,
441    /** First constant for bit-mask Unicode properties. @stable ICU 2.4 */
442    UCHAR_MASK_START=UCHAR_GENERAL_CATEGORY_MASK,
443    /** One more than the last constant for bit-mask Unicode properties. @stable ICU 2.4 */
444    UCHAR_MASK_LIMIT,
445
446    /** Double property Numeric_Value.
447        Corresponds to u_getNumericValue. @stable ICU 2.4 */
448    UCHAR_NUMERIC_VALUE=0x3000,
449    /** First constant for double Unicode properties. @stable ICU 2.4 */
450    UCHAR_DOUBLE_START=UCHAR_NUMERIC_VALUE,
451    /** One more than the last constant for double Unicode properties. @stable ICU 2.4 */
452    UCHAR_DOUBLE_LIMIT,
453
454    /** String property Age.
455        Corresponds to u_charAge. @stable ICU 2.4 */
456    UCHAR_AGE=0x4000,
457    /** First constant for string Unicode properties. @stable ICU 2.4 */
458    UCHAR_STRING_START=UCHAR_AGE,
459    /** String property Bidi_Mirroring_Glyph.
460        Corresponds to u_charMirror. @stable ICU 2.4 */
461    UCHAR_BIDI_MIRRORING_GLYPH,
462    /** String property Case_Folding.
463        Corresponds to u_strFoldCase in ustring.h. @stable ICU 2.4 */
464    UCHAR_CASE_FOLDING,
465    /** String property ISO_Comment.
466        Corresponds to u_getISOComment. @stable ICU 2.4 */
467    UCHAR_ISO_COMMENT,
468    /** String property Lowercase_Mapping.
469        Corresponds to u_strToLower in ustring.h. @stable ICU 2.4 */
470    UCHAR_LOWERCASE_MAPPING,
471    /** String property Name.
472        Corresponds to u_charName. @stable ICU 2.4 */
473    UCHAR_NAME,
474    /** String property Simple_Case_Folding.
475        Corresponds to u_foldCase. @stable ICU 2.4 */
476    UCHAR_SIMPLE_CASE_FOLDING,
477    /** String property Simple_Lowercase_Mapping.
478        Corresponds to u_tolower. @stable ICU 2.4 */
479    UCHAR_SIMPLE_LOWERCASE_MAPPING,
480    /** String property Simple_Titlecase_Mapping.
481        Corresponds to u_totitle. @stable ICU 2.4 */
482    UCHAR_SIMPLE_TITLECASE_MAPPING,
483    /** String property Simple_Uppercase_Mapping.
484        Corresponds to u_toupper. @stable ICU 2.4 */
485    UCHAR_SIMPLE_UPPERCASE_MAPPING,
486    /** String property Titlecase_Mapping.
487        Corresponds to u_strToTitle in ustring.h. @stable ICU 2.4 */
488    UCHAR_TITLECASE_MAPPING,
489    /** String property Unicode_1_Name.
490        Corresponds to u_charName. @stable ICU 2.4 */
491    UCHAR_UNICODE_1_NAME,
492    /** String property Uppercase_Mapping.
493        Corresponds to u_strToUpper in ustring.h. @stable ICU 2.4 */
494    UCHAR_UPPERCASE_MAPPING,
495    /** One more than the last constant for string Unicode properties. @stable ICU 2.4 */
496    UCHAR_STRING_LIMIT,
497
498    /** Represents a nonexistent or invalid property or property value. @stable ICU 2.4 */
499    UCHAR_INVALID_CODE = -1
500} UProperty;
501
502/**
503 * Data for enumerated Unicode general category types.
504 * See http://www.unicode.org/Public/UNIDATA/UnicodeData.html .
505 * @stable ICU 2.0
506 */
507typedef enum UCharCategory
508{
509    /** See note !!.  Comments of the form "Cn" are read by genpname. */
510
511    /** Non-category for unassigned and non-character code points. @stable ICU 2.0 */
512    U_UNASSIGNED              = 0,
513    /** Cn "Other, Not Assigned (no characters in [UnicodeData.txt] have this property)" (same as U_UNASSIGNED!) @stable ICU 2.0 */
514    U_GENERAL_OTHER_TYPES     = 0,
515    /** Lu @stable ICU 2.0 */
516    U_UPPERCASE_LETTER        = 1,
517    /** Ll @stable ICU 2.0 */
518    U_LOWERCASE_LETTER        = 2,
519    /** Lt @stable ICU 2.0 */
520    U_TITLECASE_LETTER        = 3,
521    /** Lm @stable ICU 2.0 */
522    U_MODIFIER_LETTER         = 4,
523    /** Lo @stable ICU 2.0 */
524    U_OTHER_LETTER            = 5,
525    /** Mn @stable ICU 2.0 */
526    U_NON_SPACING_MARK        = 6,
527    /** Me @stable ICU 2.0 */
528    U_ENCLOSING_MARK          = 7,
529    /** Mc @stable ICU 2.0 */
530    U_COMBINING_SPACING_MARK  = 8,
531    /** Nd @stable ICU 2.0 */
532    U_DECIMAL_DIGIT_NUMBER    = 9,
533    /** Nl @stable ICU 2.0 */
534    U_LETTER_NUMBER           = 10,
535    /** No @stable ICU 2.0 */
536    U_OTHER_NUMBER            = 11,
537    /** Zs @stable ICU 2.0 */
538    U_SPACE_SEPARATOR         = 12,
539    /** Zl @stable ICU 2.0 */
540    U_LINE_SEPARATOR          = 13,
541    /** Zp @stable ICU 2.0 */
542    U_PARAGRAPH_SEPARATOR     = 14,
543    /** Cc @stable ICU 2.0 */
544    U_CONTROL_CHAR            = 15,
545    /** Cf @stable ICU 2.0 */
546    U_FORMAT_CHAR             = 16,
547    /** Co @stable ICU 2.0 */
548    U_PRIVATE_USE_CHAR        = 17,
549    /** Cs @stable ICU 2.0 */
550    U_SURROGATE               = 18,
551    /** Pd @stable ICU 2.0 */
552    U_DASH_PUNCTUATION        = 19,
553    /** Ps @stable ICU 2.0 */
554    U_START_PUNCTUATION       = 20,
555    /** Pe @stable ICU 2.0 */
556    U_END_PUNCTUATION         = 21,
557    /** Pc @stable ICU 2.0 */
558    U_CONNECTOR_PUNCTUATION   = 22,
559    /** Po @stable ICU 2.0 */
560    U_OTHER_PUNCTUATION       = 23,
561    /** Sm @stable ICU 2.0 */
562    U_MATH_SYMBOL             = 24,
563    /** Sc @stable ICU 2.0 */
564    U_CURRENCY_SYMBOL         = 25,
565    /** Sk @stable ICU 2.0 */
566    U_MODIFIER_SYMBOL         = 26,
567    /** So @stable ICU 2.0 */
568    U_OTHER_SYMBOL            = 27,
569    /** Pi @stable ICU 2.0 */
570    U_INITIAL_PUNCTUATION     = 28,
571    /** Pf @stable ICU 2.0 */
572    U_FINAL_PUNCTUATION       = 29,
573    /** One higher than the last enum UCharCategory constant. @stable ICU 2.0 */
574    U_CHAR_CATEGORY_COUNT
575} UCharCategory;
576
577/**
578 * U_GC_XX_MASK constants are bit flags corresponding to Unicode
579 * general category values.
580 * For each category, the nth bit is set if the numeric value of the
581 * corresponding UCharCategory constant is n.
582 *
583 * There are also some U_GC_Y_MASK constants for groups of general categories
584 * like L for all letter categories.
585 *
586 * @see u_charType
587 * @see U_GET_GC_MASK
588 * @see UCharCategory
589 * @stable ICU 2.1
590 */
591#define U_GC_CN_MASK    U_MASK(U_GENERAL_OTHER_TYPES)
592
593/** Mask constant for a UCharCategory. @stable ICU 2.1 */
594#define U_GC_LU_MASK    U_MASK(U_UPPERCASE_LETTER)
595/** Mask constant for a UCharCategory. @stable ICU 2.1 */
596#define U_GC_LL_MASK    U_MASK(U_LOWERCASE_LETTER)
597/** Mask constant for a UCharCategory. @stable ICU 2.1 */
598#define U_GC_LT_MASK    U_MASK(U_TITLECASE_LETTER)
599/** Mask constant for a UCharCategory. @stable ICU 2.1 */
600#define U_GC_LM_MASK    U_MASK(U_MODIFIER_LETTER)
601/** Mask constant for a UCharCategory. @stable ICU 2.1 */
602#define U_GC_LO_MASK    U_MASK(U_OTHER_LETTER)
603
604/** Mask constant for a UCharCategory. @stable ICU 2.1 */
605#define U_GC_MN_MASK    U_MASK(U_NON_SPACING_MARK)
606/** Mask constant for a UCharCategory. @stable ICU 2.1 */
607#define U_GC_ME_MASK    U_MASK(U_ENCLOSING_MARK)
608/** Mask constant for a UCharCategory. @stable ICU 2.1 */
609#define U_GC_MC_MASK    U_MASK(U_COMBINING_SPACING_MARK)
610
611/** Mask constant for a UCharCategory. @stable ICU 2.1 */
612#define U_GC_ND_MASK    U_MASK(U_DECIMAL_DIGIT_NUMBER)
613/** Mask constant for a UCharCategory. @stable ICU 2.1 */
614#define U_GC_NL_MASK    U_MASK(U_LETTER_NUMBER)
615/** Mask constant for a UCharCategory. @stable ICU 2.1 */
616#define U_GC_NO_MASK    U_MASK(U_OTHER_NUMBER)
617
618/** Mask constant for a UCharCategory. @stable ICU 2.1 */
619#define U_GC_ZS_MASK    U_MASK(U_SPACE_SEPARATOR)
620/** Mask constant for a UCharCategory. @stable ICU 2.1 */
621#define U_GC_ZL_MASK    U_MASK(U_LINE_SEPARATOR)
622/** Mask constant for a UCharCategory. @stable ICU 2.1 */
623#define U_GC_ZP_MASK    U_MASK(U_PARAGRAPH_SEPARATOR)
624
625/** Mask constant for a UCharCategory. @stable ICU 2.1 */
626#define U_GC_CC_MASK    U_MASK(U_CONTROL_CHAR)
627/** Mask constant for a UCharCategory. @stable ICU 2.1 */
628#define U_GC_CF_MASK    U_MASK(U_FORMAT_CHAR)
629/** Mask constant for a UCharCategory. @stable ICU 2.1 */
630#define U_GC_CO_MASK    U_MASK(U_PRIVATE_USE_CHAR)
631/** Mask constant for a UCharCategory. @stable ICU 2.1 */
632#define U_GC_CS_MASK    U_MASK(U_SURROGATE)
633
634/** Mask constant for a UCharCategory. @stable ICU 2.1 */
635#define U_GC_PD_MASK    U_MASK(U_DASH_PUNCTUATION)
636/** Mask constant for a UCharCategory. @stable ICU 2.1 */
637#define U_GC_PS_MASK    U_MASK(U_START_PUNCTUATION)
638/** Mask constant for a UCharCategory. @stable ICU 2.1 */
639#define U_GC_PE_MASK    U_MASK(U_END_PUNCTUATION)
640/** Mask constant for a UCharCategory. @stable ICU 2.1 */
641#define U_GC_PC_MASK    U_MASK(U_CONNECTOR_PUNCTUATION)
642/** Mask constant for a UCharCategory. @stable ICU 2.1 */
643#define U_GC_PO_MASK    U_MASK(U_OTHER_PUNCTUATION)
644
645/** Mask constant for a UCharCategory. @stable ICU 2.1 */
646#define U_GC_SM_MASK    U_MASK(U_MATH_SYMBOL)
647/** Mask constant for a UCharCategory. @stable ICU 2.1 */
648#define U_GC_SC_MASK    U_MASK(U_CURRENCY_SYMBOL)
649/** Mask constant for a UCharCategory. @stable ICU 2.1 */
650#define U_GC_SK_MASK    U_MASK(U_MODIFIER_SYMBOL)
651/** Mask constant for a UCharCategory. @stable ICU 2.1 */
652#define U_GC_SO_MASK    U_MASK(U_OTHER_SYMBOL)
653
654/** Mask constant for a UCharCategory. @stable ICU 2.1 */
655#define U_GC_PI_MASK    U_MASK(U_INITIAL_PUNCTUATION)
656/** Mask constant for a UCharCategory. @stable ICU 2.1 */
657#define U_GC_PF_MASK    U_MASK(U_FINAL_PUNCTUATION)
658
659
660/** Mask constant for multiple UCharCategory bits (L Letters). @stable ICU 2.1 */
661#define U_GC_L_MASK \
662            (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK|U_GC_LM_MASK|U_GC_LO_MASK)
663
664/** Mask constant for multiple UCharCategory bits (LC Cased Letters). @stable ICU 2.1 */
665#define U_GC_LC_MASK \
666            (U_GC_LU_MASK|U_GC_LL_MASK|U_GC_LT_MASK)
667
668/** Mask constant for multiple UCharCategory bits (M Marks). @stable ICU 2.1 */
669#define U_GC_M_MASK (U_GC_MN_MASK|U_GC_ME_MASK|U_GC_MC_MASK)
670
671/** Mask constant for multiple UCharCategory bits (N Numbers). @stable ICU 2.1 */
672#define U_GC_N_MASK (U_GC_ND_MASK|U_GC_NL_MASK|U_GC_NO_MASK)
673
674/** Mask constant for multiple UCharCategory bits (Z Separators). @stable ICU 2.1 */
675#define U_GC_Z_MASK (U_GC_ZS_MASK|U_GC_ZL_MASK|U_GC_ZP_MASK)
676
677/** Mask constant for multiple UCharCategory bits (C Others). @stable ICU 2.1 */
678#define U_GC_C_MASK \
679            (U_GC_CN_MASK|U_GC_CC_MASK|U_GC_CF_MASK|U_GC_CO_MASK|U_GC_CS_MASK)
680
681/** Mask constant for multiple UCharCategory bits (P Punctuation). @stable ICU 2.1 */
682#define U_GC_P_MASK \
683            (U_GC_PD_MASK|U_GC_PS_MASK|U_GC_PE_MASK|U_GC_PC_MASK|U_GC_PO_MASK| \
684             U_GC_PI_MASK|U_GC_PF_MASK)
685
686/** Mask constant for multiple UCharCategory bits (S Symbols). @stable ICU 2.1 */
687#define U_GC_S_MASK (U_GC_SM_MASK|U_GC_SC_MASK|U_GC_SK_MASK|U_GC_SO_MASK)
688
689/**
690 * This specifies the language directional property of a character set.
691 * @stable ICU 2.0
692 */
693typedef enum UCharDirection {
694    /** See note !!.  Comments of the form "EN" are read by genpname. */
695
696    /** L @stable ICU 2.0 */
697    U_LEFT_TO_RIGHT               = 0,
698    /** R @stable ICU 2.0 */
699    U_RIGHT_TO_LEFT               = 1,
700    /** EN @stable ICU 2.0 */
701    U_EUROPEAN_NUMBER             = 2,
702    /** ES @stable ICU 2.0 */
703    U_EUROPEAN_NUMBER_SEPARATOR   = 3,
704    /** ET @stable ICU 2.0 */
705    U_EUROPEAN_NUMBER_TERMINATOR  = 4,
706    /** AN @stable ICU 2.0 */
707    U_ARABIC_NUMBER               = 5,
708    /** CS @stable ICU 2.0 */
709    U_COMMON_NUMBER_SEPARATOR     = 6,
710    /** B @stable ICU 2.0 */
711    U_BLOCK_SEPARATOR             = 7,
712    /** S @stable ICU 2.0 */
713    U_SEGMENT_SEPARATOR           = 8,
714    /** WS @stable ICU 2.0 */
715    U_WHITE_SPACE_NEUTRAL         = 9,
716    /** ON @stable ICU 2.0 */
717    U_OTHER_NEUTRAL               = 10,
718    /** LRE @stable ICU 2.0 */
719    U_LEFT_TO_RIGHT_EMBEDDING     = 11,
720    /** LRO @stable ICU 2.0 */
721    U_LEFT_TO_RIGHT_OVERRIDE      = 12,
722    /** AL @stable ICU 2.0 */
723    U_RIGHT_TO_LEFT_ARABIC        = 13,
724    /** RLE @stable ICU 2.0 */
725    U_RIGHT_TO_LEFT_EMBEDDING     = 14,
726    /** RLO @stable ICU 2.0 */
727    U_RIGHT_TO_LEFT_OVERRIDE      = 15,
728    /** PDF @stable ICU 2.0 */
729    U_POP_DIRECTIONAL_FORMAT      = 16,
730    /** NSM @stable ICU 2.0 */
731    U_DIR_NON_SPACING_MARK        = 17,
732    /** BN @stable ICU 2.0 */
733    U_BOUNDARY_NEUTRAL            = 18,
734    /** @stable ICU 2.0 */
735    U_CHAR_DIRECTION_COUNT
736} UCharDirection;
737
738/**
739 * Constants for Unicode blocks, see the Unicode Data file Blocks.txt
740 * @stable ICU 2.0
741 */
742enum UBlockCode {
743
744    /** New No_Block value in Unicode 4. @stable ICU 2.6 */
745    UBLOCK_NO_BLOCK = 0, /*[none]*/ /* Special range indicating No_Block */
746
747    /** @stable ICU 2.0 */
748    UBLOCK_BASIC_LATIN = 1, /*[0000]*/ /*See note !!*/
749
750    /** @stable ICU 2.0 */
751    UBLOCK_LATIN_1_SUPPLEMENT=2, /*[0080]*/
752
753    /** @stable ICU 2.0 */
754    UBLOCK_LATIN_EXTENDED_A =3, /*[0100]*/
755
756    /** @stable ICU 2.0 */
757    UBLOCK_LATIN_EXTENDED_B =4, /*[0180]*/
758
759    /** @stable ICU 2.0 */
760    UBLOCK_IPA_EXTENSIONS =5, /*[0250]*/
761
762    /** @stable ICU 2.0 */
763    UBLOCK_SPACING_MODIFIER_LETTERS =6, /*[02B0]*/
764
765    /** @stable ICU 2.0 */
766    UBLOCK_COMBINING_DIACRITICAL_MARKS =7, /*[0300]*/
767
768    /**
769     * Unicode 3.2 renames this block to "Greek and Coptic".
770     * @stable ICU 2.0
771     */
772    UBLOCK_GREEK =8, /*[0370]*/
773
774    /** @stable ICU 2.0 */
775    UBLOCK_CYRILLIC =9, /*[0400]*/
776
777    /** @stable ICU 2.0 */
778    UBLOCK_ARMENIAN =10, /*[0530]*/
779
780    /** @stable ICU 2.0 */
781    UBLOCK_HEBREW =11, /*[0590]*/
782
783    /** @stable ICU 2.0 */
784    UBLOCK_ARABIC =12, /*[0600]*/
785
786    /** @stable ICU 2.0 */
787    UBLOCK_SYRIAC =13, /*[0700]*/
788
789    /** @stable ICU 2.0 */
790    UBLOCK_THAANA =14, /*[0780]*/
791
792    /** @stable ICU 2.0 */
793    UBLOCK_DEVANAGARI =15, /*[0900]*/
794
795    /** @stable ICU 2.0 */
796    UBLOCK_BENGALI =16, /*[0980]*/
797
798    /** @stable ICU 2.0 */
799    UBLOCK_GURMUKHI =17, /*[0A00]*/
800
801    /** @stable ICU 2.0 */
802    UBLOCK_GUJARATI =18, /*[0A80]*/
803
804    /** @stable ICU 2.0 */
805    UBLOCK_ORIYA =19, /*[0B00]*/
806
807    /** @stable ICU 2.0 */
808    UBLOCK_TAMIL =20, /*[0B80]*/
809
810    /** @stable ICU 2.0 */
811    UBLOCK_TELUGU =21, /*[0C00]*/
812
813    /** @stable ICU 2.0 */
814    UBLOCK_KANNADA =22, /*[0C80]*/
815
816    /** @stable ICU 2.0 */
817    UBLOCK_MALAYALAM =23, /*[0D00]*/
818
819    /** @stable ICU 2.0 */
820    UBLOCK_SINHALA =24, /*[0D80]*/
821
822    /** @stable ICU 2.0 */
823    UBLOCK_THAI =25, /*[0E00]*/
824
825    /** @stable ICU 2.0 */
826    UBLOCK_LAO =26, /*[0E80]*/
827
828    /** @stable ICU 2.0 */
829    UBLOCK_TIBETAN =27, /*[0F00]*/
830
831    /** @stable ICU 2.0 */
832    UBLOCK_MYANMAR =28, /*[1000]*/
833
834    /** @stable ICU 2.0 */
835    UBLOCK_GEORGIAN =29, /*[10A0]*/
836
837    /** @stable ICU 2.0 */
838    UBLOCK_HANGUL_JAMO =30, /*[1100]*/
839
840    /** @stable ICU 2.0 */
841    UBLOCK_ETHIOPIC =31, /*[1200]*/
842
843    /** @stable ICU 2.0 */
844    UBLOCK_CHEROKEE =32, /*[13A0]*/
845
846    /** @stable ICU 2.0 */
847    UBLOCK_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS =33, /*[1400]*/
848
849    /** @stable ICU 2.0 */
850    UBLOCK_OGHAM =34, /*[1680]*/
851
852    /** @stable ICU 2.0 */
853    UBLOCK_RUNIC =35, /*[16A0]*/
854
855    /** @stable ICU 2.0 */
856    UBLOCK_KHMER =36, /*[1780]*/
857
858    /** @stable ICU 2.0 */
859    UBLOCK_MONGOLIAN =37, /*[1800]*/
860
861    /** @stable ICU 2.0 */
862    UBLOCK_LATIN_EXTENDED_ADDITIONAL =38, /*[1E00]*/
863
864    /** @stable ICU 2.0 */
865    UBLOCK_GREEK_EXTENDED =39, /*[1F00]*/
866
867    /** @stable ICU 2.0 */
868    UBLOCK_GENERAL_PUNCTUATION =40, /*[2000]*/
869
870    /** @stable ICU 2.0 */
871    UBLOCK_SUPERSCRIPTS_AND_SUBSCRIPTS =41, /*[2070]*/
872
873    /** @stable ICU 2.0 */
874    UBLOCK_CURRENCY_SYMBOLS =42, /*[20A0]*/
875
876    /**
877     * Unicode 3.2 renames this block to "Combining Diacritical Marks for Symbols".
878     * @stable ICU 2.0
879     */
880    UBLOCK_COMBINING_MARKS_FOR_SYMBOLS =43, /*[20D0]*/
881
882    /** @stable ICU 2.0 */
883    UBLOCK_LETTERLIKE_SYMBOLS =44, /*[2100]*/
884
885    /** @stable ICU 2.0 */
886    UBLOCK_NUMBER_FORMS =45, /*[2150]*/
887
888    /** @stable ICU 2.0 */
889    UBLOCK_ARROWS =46, /*[2190]*/
890
891    /** @stable ICU 2.0 */
892    UBLOCK_MATHEMATICAL_OPERATORS =47, /*[2200]*/
893
894    /** @stable ICU 2.0 */
895    UBLOCK_MISCELLANEOUS_TECHNICAL =48, /*[2300]*/
896
897    /** @stable ICU 2.0 */
898    UBLOCK_CONTROL_PICTURES =49, /*[2400]*/
899
900    /** @stable ICU 2.0 */
901    UBLOCK_OPTICAL_CHARACTER_RECOGNITION =50, /*[2440]*/
902
903    /** @stable ICU 2.0 */
904    UBLOCK_ENCLOSED_ALPHANUMERICS =51, /*[2460]*/
905
906    /** @stable ICU 2.0 */
907    UBLOCK_BOX_DRAWING =52, /*[2500]*/
908
909    /** @stable ICU 2.0 */
910    UBLOCK_BLOCK_ELEMENTS =53, /*[2580]*/
911
912    /** @stable ICU 2.0 */
913    UBLOCK_GEOMETRIC_SHAPES =54, /*[25A0]*/
914
915    /** @stable ICU 2.0 */
916    UBLOCK_MISCELLANEOUS_SYMBOLS =55, /*[2600]*/
917
918    /** @stable ICU 2.0 */
919    UBLOCK_DINGBATS =56, /*[2700]*/
920
921    /** @stable ICU 2.0 */
922    UBLOCK_BRAILLE_PATTERNS =57, /*[2800]*/
923
924    /** @stable ICU 2.0 */
925    UBLOCK_CJK_RADICALS_SUPPLEMENT =58, /*[2E80]*/
926
927    /** @stable ICU 2.0 */
928    UBLOCK_KANGXI_RADICALS =59, /*[2F00]*/
929
930    /** @stable ICU 2.0 */
931    UBLOCK_IDEOGRAPHIC_DESCRIPTION_CHARACTERS =60, /*[2FF0]*/
932
933    /** @stable ICU 2.0 */
934    UBLOCK_CJK_SYMBOLS_AND_PUNCTUATION =61, /*[3000]*/
935
936    /** @stable ICU 2.0 */
937    UBLOCK_HIRAGANA =62, /*[3040]*/
938
939    /** @stable ICU 2.0 */
940    UBLOCK_KATAKANA =63, /*[30A0]*/
941
942    /** @stable ICU 2.0 */
943    UBLOCK_BOPOMOFO =64, /*[3100]*/
944
945    /** @stable ICU 2.0 */
946    UBLOCK_HANGUL_COMPATIBILITY_JAMO =65, /*[3130]*/
947
948    /** @stable ICU 2.0 */
949    UBLOCK_KANBUN =66, /*[3190]*/
950
951    /** @stable ICU 2.0 */
952    UBLOCK_BOPOMOFO_EXTENDED =67, /*[31A0]*/
953
954    /** @stable ICU 2.0 */
955    UBLOCK_ENCLOSED_CJK_LETTERS_AND_MONTHS =68, /*[3200]*/
956
957    /** @stable ICU 2.0 */
958    UBLOCK_CJK_COMPATIBILITY =69, /*[3300]*/
959
960    /** @stable ICU 2.0 */
961    UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A =70, /*[3400]*/
962
963    /** @stable ICU 2.0 */
964    UBLOCK_CJK_UNIFIED_IDEOGRAPHS =71, /*[4E00]*/
965
966    /** @stable ICU 2.0 */
967    UBLOCK_YI_SYLLABLES =72, /*[A000]*/
968
969    /** @stable ICU 2.0 */
970    UBLOCK_YI_RADICALS =73, /*[A490]*/
971
972    /** @stable ICU 2.0 */
973    UBLOCK_HANGUL_SYLLABLES =74, /*[AC00]*/
974
975    /** @stable ICU 2.0 */
976    UBLOCK_HIGH_SURROGATES =75, /*[D800]*/
977
978    /** @stable ICU 2.0 */
979    UBLOCK_HIGH_PRIVATE_USE_SURROGATES =76, /*[DB80]*/
980
981    /** @stable ICU 2.0 */
982    UBLOCK_LOW_SURROGATES =77, /*[DC00]*/
983
984    /**
985     * Same as UBLOCK_PRIVATE_USE_AREA.
986     * Until Unicode 3.1.1, the corresponding block name was "Private Use",
987     * and multiple code point ranges had this block.
988     * Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and
989     * adds separate blocks for the supplementary PUAs.
990     *
991     * @stable ICU 2.0
992     */
993    UBLOCK_PRIVATE_USE = 78,
994    /**
995     * Same as UBLOCK_PRIVATE_USE.
996     * Until Unicode 3.1.1, the corresponding block name was "Private Use",
997     * and multiple code point ranges had this block.
998     * Unicode 3.2 renames the block for the BMP PUA to "Private Use Area" and
999     * adds separate blocks for the supplementary PUAs.
1000     *
1001     * @stable ICU 2.0
1002     */
1003    UBLOCK_PRIVATE_USE_AREA =UBLOCK_PRIVATE_USE, /*[E000]*/
1004
1005    /** @stable ICU 2.0 */
1006    UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS =79, /*[F900]*/
1007
1008    /** @stable ICU 2.0 */
1009    UBLOCK_ALPHABETIC_PRESENTATION_FORMS =80, /*[FB00]*/
1010
1011    /** @stable ICU 2.0 */
1012    UBLOCK_ARABIC_PRESENTATION_FORMS_A =81, /*[FB50]*/
1013
1014    /** @stable ICU 2.0 */
1015    UBLOCK_COMBINING_HALF_MARKS =82, /*[FE20]*/
1016
1017    /** @stable ICU 2.0 */
1018    UBLOCK_CJK_COMPATIBILITY_FORMS =83, /*[FE30]*/
1019
1020    /** @stable ICU 2.0 */
1021    UBLOCK_SMALL_FORM_VARIANTS =84, /*[FE50]*/
1022
1023    /** @stable ICU 2.0 */
1024    UBLOCK_ARABIC_PRESENTATION_FORMS_B =85, /*[FE70]*/
1025
1026    /** @stable ICU 2.0 */
1027    UBLOCK_SPECIALS =86, /*[FFF0]*/
1028
1029    /** @stable ICU 2.0 */
1030    UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS =87, /*[FF00]*/
1031
1032    /* New blocks in Unicode 3.1 */
1033
1034    /** @stable ICU 2.0 */
1035    UBLOCK_OLD_ITALIC = 88  , /*[10300]*/
1036    /** @stable ICU 2.0 */
1037    UBLOCK_GOTHIC = 89 , /*[10330]*/
1038    /** @stable ICU 2.0 */
1039    UBLOCK_DESERET = 90 , /*[10400]*/
1040    /** @stable ICU 2.0 */
1041    UBLOCK_BYZANTINE_MUSICAL_SYMBOLS = 91 , /*[1D000]*/
1042    /** @stable ICU 2.0 */
1043    UBLOCK_MUSICAL_SYMBOLS = 92 , /*[1D100]*/
1044    /** @stable ICU 2.0 */
1045    UBLOCK_MATHEMATICAL_ALPHANUMERIC_SYMBOLS = 93  , /*[1D400]*/
1046    /** @stable ICU 2.0 */
1047    UBLOCK_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B  = 94 , /*[20000]*/
1048    /** @stable ICU 2.0 */
1049    UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT = 95 , /*[2F800]*/
1050    /** @stable ICU 2.0 */
1051    UBLOCK_TAGS = 96, /*[E0000]*/
1052
1053    /* New blocks in Unicode 3.2 */
1054
1055    /**
1056     * Unicode 4.0.1 renames the "Cyrillic Supplementary" block to "Cyrillic Supplement".
1057     * @stable ICU 2.2
1058     */
1059    UBLOCK_CYRILLIC_SUPPLEMENTARY = 97,
1060    /** @draft ICU 3.0  */
1061    UBLOCK_CYRILLIC_SUPPLEMENT = UBLOCK_CYRILLIC_SUPPLEMENTARY, /*[0500]*/
1062    /** @stable ICU 2.2 */
1063    UBLOCK_TAGALOG = 98, /*[1700]*/
1064    /** @stable ICU 2.2 */
1065    UBLOCK_HANUNOO = 99, /*[1720]*/
1066    /** @stable ICU 2.2 */
1067    UBLOCK_BUHID = 100, /*[1740]*/
1068    /** @stable ICU 2.2 */
1069    UBLOCK_TAGBANWA = 101, /*[1760]*/
1070    /** @stable ICU 2.2 */
1071    UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A = 102, /*[27C0]*/
1072    /** @stable ICU 2.2 */
1073    UBLOCK_SUPPLEMENTAL_ARROWS_A = 103, /*[27F0]*/
1074    /** @stable ICU 2.2 */
1075    UBLOCK_SUPPLEMENTAL_ARROWS_B = 104, /*[2900]*/
1076    /** @stable ICU 2.2 */
1077    UBLOCK_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B = 105, /*[2980]*/
1078    /** @stable ICU 2.2 */
1079    UBLOCK_SUPPLEMENTAL_MATHEMATICAL_OPERATORS = 106, /*[2A00]*/
1080    /** @stable ICU 2.2 */
1081    UBLOCK_KATAKANA_PHONETIC_EXTENSIONS = 107, /*[31F0]*/
1082    /** @stable ICU 2.2 */
1083    UBLOCK_VARIATION_SELECTORS = 108, /*[FE00]*/
1084    /** @stable ICU 2.2 */
1085    UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_A = 109, /*[F0000]*/
1086    /** @stable ICU 2.2 */
1087    UBLOCK_SUPPLEMENTARY_PRIVATE_USE_AREA_B = 110, /*[100000]*/
1088
1089    /* New blocks in Unicode 4 */
1090
1091    /** @stable ICU 2.6 */
1092    UBLOCK_LIMBU = 111, /*[1900]*/
1093    /** @stable ICU 2.6 */
1094    UBLOCK_TAI_LE = 112, /*[1950]*/
1095    /** @stable ICU 2.6 */
1096    UBLOCK_KHMER_SYMBOLS = 113, /*[19E0]*/
1097    /** @stable ICU 2.6 */
1098    UBLOCK_PHONETIC_EXTENSIONS = 114, /*[1D00]*/
1099    /** @stable ICU 2.6 */
1100    UBLOCK_MISCELLANEOUS_SYMBOLS_AND_ARROWS = 115, /*[2B00]*/
1101    /** @stable ICU 2.6 */
1102    UBLOCK_YIJING_HEXAGRAM_SYMBOLS = 116, /*[4DC0]*/
1103    /** @stable ICU 2.6 */
1104    UBLOCK_LINEAR_B_SYLLABARY = 117, /*[10000]*/
1105    /** @stable ICU 2.6 */
1106    UBLOCK_LINEAR_B_IDEOGRAMS = 118, /*[10080]*/
1107    /** @stable ICU 2.6 */
1108    UBLOCK_AEGEAN_NUMBERS = 119, /*[10100]*/
1109    /** @stable ICU 2.6 */
1110    UBLOCK_UGARITIC = 120, /*[10380]*/
1111    /** @stable ICU 2.6 */
1112    UBLOCK_SHAVIAN = 121, /*[10450]*/
1113    /** @stable ICU 2.6 */
1114    UBLOCK_OSMANYA = 122, /*[10480]*/
1115    /** @stable ICU 2.6 */
1116    UBLOCK_CYPRIOT_SYLLABARY = 123, /*[10800]*/
1117    /** @stable ICU 2.6 */
1118    UBLOCK_TAI_XUAN_JING_SYMBOLS = 124, /*[1D300]*/
1119    /** @stable ICU 2.6 */
1120    UBLOCK_VARIATION_SELECTORS_SUPPLEMENT = 125, /*[E0100]*/
1121
1122    /** @stable ICU 2.0 */
1123    UBLOCK_COUNT,
1124
1125    /** @stable ICU 2.0 */
1126    UBLOCK_INVALID_CODE=-1
1127};
1128
1129/** @stable ICU 2.0 */
1130typedef enum UBlockCode UBlockCode;
1131
1132/**
1133 * East Asian Width constants.
1134 *
1135 * @see UCHAR_EAST_ASIAN_WIDTH
1136 * @see u_getIntPropertyValue
1137 * @stable ICU 2.2
1138 */
1139typedef enum UEastAsianWidth {
1140    U_EA_NEUTRAL,   /*[N]*/ /*See note !!*/
1141    U_EA_AMBIGUOUS, /*[A]*/
1142    U_EA_HALFWIDTH, /*[H]*/
1143    U_EA_FULLWIDTH, /*[F]*/
1144    U_EA_NARROW,    /*[Na]*/
1145    U_EA_WIDE,      /*[W]*/
1146    U_EA_COUNT
1147} UEastAsianWidth;
1148/*
1149 * Implementation note:
1150 * Keep UEastAsianWidth constant values in sync with names list in genprops/props2.c.
1151 */
1152
1153/**
1154 * Selector constants for u_charName().
1155 * u_charName() returns the "modern" name of a
1156 * Unicode character; or the name that was defined in
1157 * Unicode version 1.0, before the Unicode standard merged
1158 * with ISO-10646; or an "extended" name that gives each
1159 * Unicode code point a unique name.
1160 *
1161 * @see u_charName
1162 * @stable ICU 2.0
1163 */
1164typedef enum UCharNameChoice {
1165    U_UNICODE_CHAR_NAME,
1166    U_UNICODE_10_CHAR_NAME,
1167    U_EXTENDED_CHAR_NAME,
1168    U_CHAR_NAME_CHOICE_COUNT
1169} UCharNameChoice;
1170
1171/**
1172 * Selector constants for u_getPropertyName() and
1173 * u_getPropertyValueName().  These selectors are used to choose which
1174 * name is returned for a given property or value.  All properties and
1175 * values have a long name.  Most have a short name, but some do not.
1176 * Unicode allows for additional names, beyond the long and short
1177 * name, which would be indicated by U_LONG_PROPERTY_NAME + i, where
1178 * i=1, 2,...
1179 *
1180 * @see u_getPropertyName()
1181 * @see u_getPropertyValueName()
1182 * @stable ICU 2.4
1183 */
1184typedef enum UPropertyNameChoice {
1185    U_SHORT_PROPERTY_NAME,
1186    U_LONG_PROPERTY_NAME,
1187    U_PROPERTY_NAME_CHOICE_COUNT
1188} UPropertyNameChoice;
1189
1190/**
1191 * Decomposition Type constants.
1192 *
1193 * @see UCHAR_DECOMPOSITION_TYPE
1194 * @stable ICU 2.2
1195 */
1196typedef enum UDecompositionType {
1197    U_DT_NONE,              /*[none]*/ /*See note !!*/
1198    U_DT_CANONICAL,         /*[can]*/
1199    U_DT_COMPAT,            /*[com]*/
1200    U_DT_CIRCLE,            /*[enc]*/
1201    U_DT_FINAL,             /*[fin]*/
1202    U_DT_FONT,              /*[font]*/
1203    U_DT_FRACTION,          /*[fra]*/
1204    U_DT_INITIAL,           /*[init]*/
1205    U_DT_ISOLATED,          /*[iso]*/
1206    U_DT_MEDIAL,            /*[med]*/
1207    U_DT_NARROW,            /*[nar]*/
1208    U_DT_NOBREAK,           /*[nb]*/
1209    U_DT_SMALL,             /*[sml]*/
1210    U_DT_SQUARE,            /*[sqr]*/
1211    U_DT_SUB,               /*[sub]*/
1212    U_DT_SUPER,             /*[sup]*/
1213    U_DT_VERTICAL,          /*[vert]*/
1214    U_DT_WIDE,              /*[wide]*/
1215    U_DT_COUNT /* 18 */
1216} UDecompositionType;
1217
1218/**
1219 * Joining Type constants.
1220 *
1221 * @see UCHAR_JOINING_TYPE
1222 * @stable ICU 2.2
1223 */
1224typedef enum UJoiningType {
1225    U_JT_NON_JOINING,       /*[U]*/ /*See note !!*/
1226    U_JT_JOIN_CAUSING,      /*[C]*/
1227    U_JT_DUAL_JOINING,      /*[D]*/
1228    U_JT_LEFT_JOINING,      /*[L]*/
1229    U_JT_RIGHT_JOINING,     /*[R]*/
1230    U_JT_TRANSPARENT,       /*[T]*/
1231    U_JT_COUNT /* 6 */
1232} UJoiningType;
1233
1234/**
1235 * Joining Group constants.
1236 *
1237 * @see UCHAR_JOINING_GROUP
1238 * @stable ICU 2.2
1239 */
1240typedef enum UJoiningGroup {
1241    U_JG_NO_JOINING_GROUP,
1242    U_JG_AIN,
1243    U_JG_ALAPH,
1244    U_JG_ALEF,
1245    U_JG_BEH,
1246    U_JG_BETH,
1247    U_JG_DAL,
1248    U_JG_DALATH_RISH,
1249    U_JG_E,
1250    U_JG_FEH,
1251    U_JG_FINAL_SEMKATH,
1252    U_JG_GAF,
1253    U_JG_GAMAL,
1254    U_JG_HAH,
1255    U_JG_HAMZA_ON_HEH_GOAL,
1256    U_JG_HE,
1257    U_JG_HEH,
1258    U_JG_HEH_GOAL,
1259    U_JG_HETH,
1260    U_JG_KAF,
1261    U_JG_KAPH,
1262    U_JG_KNOTTED_HEH,
1263    U_JG_LAM,
1264    U_JG_LAMADH,
1265    U_JG_MEEM,
1266    U_JG_MIM,
1267    U_JG_NOON,
1268    U_JG_NUN,
1269    U_JG_PE,
1270    U_JG_QAF,
1271    U_JG_QAPH,
1272    U_JG_REH,
1273    U_JG_REVERSED_PE,
1274    U_JG_SAD,
1275    U_JG_SADHE,
1276    U_JG_SEEN,
1277    U_JG_SEMKATH,
1278    U_JG_SHIN,
1279    U_JG_SWASH_KAF,
1280    U_JG_SYRIAC_WAW,
1281    U_JG_TAH,
1282    U_JG_TAW,
1283    U_JG_TEH_MARBUTA,
1284    U_JG_TETH,
1285    U_JG_WAW,
1286    U_JG_YEH,
1287    U_JG_YEH_BARREE,
1288    U_JG_YEH_WITH_TAIL,
1289    U_JG_YUDH,
1290    U_JG_YUDH_HE,
1291    U_JG_ZAIN,
1292    U_JG_FE,        /**< @stable ICU 2.6 */
1293    U_JG_KHAPH,     /**< @stable ICU 2.6 */
1294    U_JG_ZHAIN,     /**< @stable ICU 2.6 */
1295    U_JG_COUNT
1296} UJoiningGroup;
1297
1298/**
1299 * Line Break constants.
1300 *
1301 * @see UCHAR_LINE_BREAK
1302 * @stable ICU 2.2
1303 */
1304typedef enum ULineBreak {
1305    U_LB_UNKNOWN,           /*[XX]*/ /*See note !!*/
1306    U_LB_AMBIGUOUS,         /*[AI]*/
1307    U_LB_ALPHABETIC,        /*[AL]*/
1308    U_LB_BREAK_BOTH,        /*[B2]*/
1309    U_LB_BREAK_AFTER,       /*[BA]*/
1310    U_LB_BREAK_BEFORE,      /*[BB]*/
1311    U_LB_MANDATORY_BREAK,   /*[BK]*/
1312    U_LB_CONTINGENT_BREAK,  /*[CB]*/
1313    U_LB_CLOSE_PUNCTUATION, /*[CL]*/
1314    U_LB_COMBINING_MARK,    /*[CM]*/
1315    U_LB_CARRIAGE_RETURN,   /*[CR]*/
1316    U_LB_EXCLAMATION,       /*[EX]*/
1317    U_LB_GLUE,              /*[GL]*/
1318    U_LB_HYPHEN,            /*[HY]*/
1319    U_LB_IDEOGRAPHIC,       /*[ID]*/
1320    U_LB_INSEPERABLE,
1321    /** Renamed from the misspelled "inseperable" in Unicode 4.0.1/ICU 3.0 @draft ICU 3.0 */
1322    U_LB_INSEPARABLE=U_LB_INSEPERABLE,/*[IN]*/
1323    U_LB_INFIX_NUMERIC,     /*[IS]*/
1324    U_LB_LINE_FEED,         /*[LF]*/
1325    U_LB_NONSTARTER,        /*[NS]*/
1326    U_LB_NUMERIC,           /*[NU]*/
1327    U_LB_OPEN_PUNCTUATION,  /*[OP]*/
1328    U_LB_POSTFIX_NUMERIC,   /*[PO]*/
1329    U_LB_PREFIX_NUMERIC,    /*[PR]*/
1330    U_LB_QUOTATION,         /*[QU]*/
1331    U_LB_COMPLEX_CONTEXT,   /*[SA]*/
1332    U_LB_SURROGATE,         /*[SG]*/
1333    U_LB_SPACE,             /*[SP]*/
1334    U_LB_BREAK_SYMBOLS,     /*[SY]*/
1335    U_LB_ZWSPACE,           /*[ZW]*/
1336    U_LB_NEXT_LINE,         /*[NL]*/ /* from here on: new in Unicode 4/ICU 2.6 */
1337    U_LB_WORD_JOINER,       /*[WJ]*/
1338    U_LB_COUNT
1339} ULineBreak;
1340
1341/**
1342 * Numeric Type constants.
1343 *
1344 * @see UCHAR_NUMERIC_TYPE
1345 * @stable ICU 2.2
1346 */
1347typedef enum UNumericType {
1348    U_NT_NONE,              /*[None]*/ /*See note !!*/
1349    U_NT_DECIMAL,           /*[de]*/
1350    U_NT_DIGIT,             /*[di]*/
1351    U_NT_NUMERIC,           /*[nu]*/
1352    U_NT_COUNT
1353} UNumericType;
1354
1355/**
1356 * Hangul Syllable Type constants.
1357 *
1358 * @see UCHAR_HANGUL_SYLLABLE_TYPE
1359 * @stable ICU 2.6
1360 */
1361typedef enum UHangulSyllableType {
1362    U_HST_NOT_APPLICABLE,   /*[NA]*/ /*See note !!*/
1363    U_HST_LEADING_JAMO,     /*[L]*/
1364    U_HST_VOWEL_JAMO,       /*[V]*/
1365    U_HST_TRAILING_JAMO,    /*[T]*/
1366    U_HST_LV_SYLLABLE,      /*[LV]*/
1367    U_HST_LVT_SYLLABLE,     /*[LVT]*/
1368    U_HST_COUNT
1369} UHangulSyllableType;
1370
1371/**
1372 * Check a binary Unicode property for a code point.
1373 *
1374 * Unicode, especially in version 3.2, defines many more properties than the
1375 * original set in UnicodeData.txt.
1376 *
1377 * The properties APIs are intended to reflect Unicode properties as defined
1378 * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
1379 * For details about the properties see http://www.unicode.org/ucd/ .
1380 * For names of Unicode properties see the UCD file PropertyAliases.txt.
1381 *
1382 * Important: If ICU is built with UCD files from Unicode versions below 3.2,
1383 * then properties marked with "new in Unicode 3.2" are not or not fully available.
1384 *
1385 * @param c Code point to test.
1386 * @param which UProperty selector constant, identifies which binary property to check.
1387 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT.
1388 * @return TRUE or FALSE according to the binary Unicode property value for c.
1389 *         Also FALSE if 'which' is out of bounds or if the Unicode version
1390 *         does not have data for the property at all, or not for this code point.
1391 *
1392 * @see UProperty
1393 * @see u_getIntPropertyValue
1394 * @see u_getUnicodeVersion
1395 * @stable ICU 2.1
1396 */
1397U_STABLE UBool U_EXPORT2
1398u_hasBinaryProperty(UChar32 c, UProperty which);
1399
1400/**
1401 * Check if a code point has the Alphabetic Unicode property.
1402 * Same as u_hasBinaryProperty(c, UCHAR_ALPHABETIC).
1403 * This is different from u_isalpha!
1404 * @param c Code point to test
1405 * @return true if the code point has the Alphabetic Unicode property, false otherwise
1406 *
1407 * @see UCHAR_ALPHABETIC
1408 * @see u_isalpha
1409 * @see u_hasBinaryProperty
1410 * @stable ICU 2.1
1411 */
1412U_STABLE UBool U_EXPORT2
1413u_isUAlphabetic(UChar32 c);
1414
1415/**
1416 * Check if a code point has the Lowercase Unicode property.
1417 * Same as u_hasBinaryProperty(c, UCHAR_LOWERCASE).
1418 * This is different from u_islower!
1419 * @param c Code point to test
1420 * @return true if the code point has the Lowercase Unicode property, false otherwise
1421 *
1422 * @see UCHAR_LOWERCASE
1423 * @see u_islower
1424 * @see u_hasBinaryProperty
1425 * @stable ICU 2.1
1426 */
1427U_STABLE UBool U_EXPORT2
1428u_isULowercase(UChar32 c);
1429
1430/**
1431 * Check if a code point has the Uppercase Unicode property.
1432 * Same as u_hasBinaryProperty(c, UCHAR_UPPERCASE).
1433 * This is different from u_isupper!
1434 * @param c Code point to test
1435 * @return true if the code point has the Uppercase Unicode property, false otherwise
1436 *
1437 * @see UCHAR_UPPERCASE
1438 * @see u_isupper
1439 * @see u_hasBinaryProperty
1440 * @stable ICU 2.1
1441 */
1442U_STABLE UBool U_EXPORT2
1443u_isUUppercase(UChar32 c);
1444
1445/**
1446 * Check if a code point has the White_Space Unicode property.
1447 * Same as u_hasBinaryProperty(c, UCHAR_WHITE_SPACE).
1448 * This is different from both u_isspace and u_isWhitespace!
1449 *
1450 * Note: There are several ICU whitespace functions; please see the uchar.h
1451 * file documentation for a detailed comparison.
1452 *
1453 * @param c Code point to test
1454 * @return true if the code point has the White_Space Unicode property, false otherwise.
1455 *
1456 * @see UCHAR_WHITE_SPACE
1457 * @see u_isWhitespace
1458 * @see u_isspace
1459 * @see u_isJavaSpaceChar
1460 * @see u_hasBinaryProperty
1461 * @stable ICU 2.1
1462 */
1463U_STABLE UBool U_EXPORT2
1464u_isUWhiteSpace(UChar32 c);
1465
1466/**
1467 * Get the property value for an enumerated or integer Unicode property for a code point.
1468 * Also returns binary and mask property values.
1469 *
1470 * Unicode, especially in version 3.2, defines many more properties than the
1471 * original set in UnicodeData.txt.
1472 *
1473 * The properties APIs are intended to reflect Unicode properties as defined
1474 * in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR).
1475 * For details about the properties see http://www.unicode.org/ .
1476 * For names of Unicode properties see the UCD file PropertyAliases.txt.
1477 *
1478 * Sample usage:
1479 * UEastAsianWidth ea=(UEastAsianWidth)u_getIntPropertyValue(c, UCHAR_EAST_ASIAN_WIDTH);
1480 * UBool b=(UBool)u_getIntPropertyValue(c, UCHAR_IDEOGRAPHIC);
1481 *
1482 * @param c Code point to test.
1483 * @param which UProperty selector constant, identifies which property to check.
1484 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
1485 *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
1486 *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
1487 * @return Numeric value that is directly the property value or,
1488 *         for enumerated properties, corresponds to the numeric value of the enumerated
1489 *         constant of the respective property value enumeration type
1490 *         (cast to enum type if necessary).
1491 *         Returns 0 or 1 (for FALSE/TRUE) for binary Unicode properties.
1492 *         Returns a bit-mask for mask properties.
1493 *         Returns 0 if 'which' is out of bounds or if the Unicode version
1494 *         does not have data for the property at all, or not for this code point.
1495 *
1496 * @see UProperty
1497 * @see u_hasBinaryProperty
1498 * @see u_getIntPropertyMinValue
1499 * @see u_getIntPropertyMaxValue
1500 * @see u_getUnicodeVersion
1501 * @stable ICU 2.2
1502 */
1503U_STABLE int32_t U_EXPORT2
1504u_getIntPropertyValue(UChar32 c, UProperty which);
1505
1506/**
1507 * Get the minimum value for an enumerated/integer/binary Unicode property.
1508 * Can be used together with u_getIntPropertyMaxValue
1509 * to allocate arrays of UnicodeSet or similar.
1510 *
1511 * @param which UProperty selector constant, identifies which binary property to check.
1512 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
1513 *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.
1514 * @return Minimum value returned by u_getIntPropertyValue for a Unicode property.
1515 *         0 if the property selector is out of range.
1516 *
1517 * @see UProperty
1518 * @see u_hasBinaryProperty
1519 * @see u_getUnicodeVersion
1520 * @see u_getIntPropertyMaxValue
1521 * @see u_getIntPropertyValue
1522 * @stable ICU 2.2
1523 */
1524U_STABLE int32_t U_EXPORT2
1525u_getIntPropertyMinValue(UProperty which);
1526
1527/**
1528 * Get the maximum value for an enumerated/integer/binary Unicode property.
1529 * Can be used together with u_getIntPropertyMinValue
1530 * to allocate arrays of UnicodeSet or similar.
1531 *
1532 * Examples for min/max values (for Unicode 3.2):
1533 *
1534 * - UCHAR_BIDI_CLASS:    0/18 (U_LEFT_TO_RIGHT/U_BOUNDARY_NEUTRAL)
1535 * - UCHAR_SCRIPT:        0/45 (USCRIPT_COMMON/USCRIPT_TAGBANWA)
1536 * - UCHAR_IDEOGRAPHIC:   0/1  (FALSE/TRUE)
1537 *
1538 * For undefined UProperty constant values, min/max values will be 0/-1.
1539 *
1540 * @param which UProperty selector constant, identifies which binary property to check.
1541 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
1542 *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT.
1543 * @return Maximum value returned by u_getIntPropertyValue for a Unicode property.
1544 *         <=0 if the property selector is out of range.
1545 *
1546 * @see UProperty
1547 * @see u_hasBinaryProperty
1548 * @see u_getUnicodeVersion
1549 * @see u_getIntPropertyMaxValue
1550 * @see u_getIntPropertyValue
1551 * @stable ICU 2.2
1552 */
1553U_STABLE int32_t U_EXPORT2
1554u_getIntPropertyMaxValue(UProperty which);
1555
1556/**
1557 * Get the numeric value for a Unicode code point as defined in the
1558 * Unicode Character Database.
1559 *
1560 * A "double" return type is necessary because
1561 * some numeric values are fractions, negative, or too large for int32_t.
1562 *
1563 * For characters without any numeric values in the Unicode Character Database,
1564 * this function will return U_NO_NUMERIC_VALUE.
1565 *
1566 * Similar to java.lang.Character.getNumericValue(), but u_getNumericValue()
1567 * also supports negative values, large values, and fractions,
1568 * while Java's getNumericValue() returns values 10..35 for ASCII letters.
1569 *
1570 * @param c Code point to get the numeric value for.
1571 * @return Numeric value of c, or U_NO_NUMERIC_VALUE if none is defined.
1572 *
1573 * @see U_NO_NUMERIC_VALUE
1574 * @stable ICU 2.2
1575 */
1576U_STABLE double U_EXPORT2
1577u_getNumericValue(UChar32 c);
1578
1579/**
1580 * Special value that is returned by u_getNumericValue when
1581 * no numeric value is defined for a code point.
1582 *
1583 * @see u_getNumericValue
1584 * @stable ICU 2.2
1585 */
1586#define U_NO_NUMERIC_VALUE ((double)-123456789.)
1587
1588/**
1589 * Determines whether the specified code point has the general category "Ll"
1590 * (lowercase letter).
1591 *
1592 * Same as java.lang.Character.isLowerCase().
1593 *
1594 * This misses some characters that are also lowercase but
1595 * have a different general category value.
1596 * In order to include those, use UCHAR_LOWERCASE.
1597 *
1598 * In addition to being equivalent to a Java function, this also serves
1599 * as a C/POSIX migration function.
1600 * See the comments about C/POSIX character classification functions in the
1601 * documentation at the top of this header file.
1602 *
1603 * @param c the code point to be tested
1604 * @return TRUE if the code point is an Ll lowercase letter
1605 *
1606 * @see UCHAR_LOWERCASE
1607 * @see u_isupper
1608 * @see u_istitle
1609 * @see u_islower
1610 * @stable ICU 2.0
1611 */
1612U_STABLE UBool U_EXPORT2
1613u_islower(UChar32 c);
1614
1615/**
1616 * Determines whether the specified code point has the general category "Lu"
1617 * (uppercase letter).
1618 *
1619 * Same as java.lang.Character.isUpperCase().
1620 *
1621 * This misses some characters that are also uppercase but
1622 * have a different general category value.
1623 * In order to include those, use UCHAR_UPPERCASE.
1624 *
1625 * In addition to being equivalent to a Java function, this also serves
1626 * as a C/POSIX migration function.
1627 * See the comments about C/POSIX character classification functions in the
1628 * documentation at the top of this header file.
1629 *
1630 * @param c the code point to be tested
1631 * @return TRUE if the code point is an Lu uppercase letter
1632 *
1633 * @see UCHAR_UPPERCASE
1634 * @see u_islower
1635 * @see u_istitle
1636 * @see u_tolower
1637 * @stable ICU 2.0
1638 */
1639U_STABLE UBool U_EXPORT2
1640u_isupper(UChar32 c);
1641
1642/**
1643 * Determines whether the specified code point is a titlecase letter.
1644 * True for general category "Lt" (titlecase letter).
1645 *
1646 * Same as java.lang.Character.isTitleCase().
1647 *
1648 * @param c the code point to be tested
1649 * @return TRUE if the code point is an Lt titlecase letter
1650 *
1651 * @see u_isupper
1652 * @see u_islower
1653 * @see u_totitle
1654 * @stable ICU 2.0
1655 */
1656U_STABLE UBool U_EXPORT2
1657u_istitle(UChar32 c);
1658
1659/**
1660 * Determines whether the specified code point is a digit character according to Java.
1661 * True for characters with general category "Nd" (decimal digit numbers).
1662 * Beginning with Unicode 4, this is the same as
1663 * testing for the Numeric_Type of Decimal.
1664 *
1665 * Same as java.lang.Character.isDigit().
1666 *
1667 * In addition to being equivalent to a Java function, this also serves
1668 * as a C/POSIX migration function.
1669 * See the comments about C/POSIX character classification functions in the
1670 * documentation at the top of this header file.
1671 *
1672 * @param c the code point to be tested
1673 * @return TRUE if the code point is a digit character according to Character.isDigit()
1674 *
1675 * @stable ICU 2.0
1676 */
1677U_STABLE UBool U_EXPORT2
1678u_isdigit(UChar32 c);
1679
1680/**
1681 * Determines whether the specified code point is a letter character.
1682 * True for general categories "L" (letters).
1683 *
1684 * Same as java.lang.Character.isLetter().
1685 *
1686 * In addition to being equivalent to a Java function, this also serves
1687 * as a C/POSIX migration function.
1688 * See the comments about C/POSIX character classification functions in the
1689 * documentation at the top of this header file.
1690 *
1691 * @param c the code point to be tested
1692 * @return TRUE if the code point is a letter character
1693 *
1694 * @see u_isdigit
1695 * @see u_isalnum
1696 * @stable ICU 2.0
1697 */
1698U_STABLE UBool U_EXPORT2
1699u_isalpha(UChar32 c);
1700
1701/**
1702 * Determines whether the specified code point is an alphanumeric character
1703 * (letter or digit) according to Java.
1704 * True for characters with general categories
1705 * "L" (letters) and "Nd" (decimal digit numbers).
1706 *
1707 * Same as java.lang.Character.isLetterOrDigit().
1708 *
1709 * In addition to being equivalent to a Java function, this also serves
1710 * as a C/POSIX migration function.
1711 * See the comments about C/POSIX character classification functions in the
1712 * documentation at the top of this header file.
1713 *
1714 * @param c the code point to be tested
1715 * @return TRUE if the code point is an alphanumeric character according to Character.isLetterOrDigit()
1716 *
1717 * @stable ICU 2.0
1718 */
1719U_STABLE UBool U_EXPORT2
1720u_isalnum(UChar32 c);
1721
1722/**
1723 * Determines whether the specified code point is a hexadecimal digit.
1724 * This is equivalent to u_digit(c, 16)>=0.
1725 * True for characters with general category "Nd" (decimal digit numbers)
1726 * as well as Latin letters a-f and A-F in both ASCII and Fullwidth ASCII.
1727 * (That is, for letters with code points
1728 * 0041..0046, 0061..0066, FF21..FF26, FF41..FF46.)
1729 *
1730 * In order to narrow the definition of hexadecimal digits to only ASCII
1731 * characters, use (c<=0x7f && u_isxdigit(c)).
1732 *
1733 * This is a C/POSIX migration function.
1734 * See the comments about C/POSIX character classification functions in the
1735 * documentation at the top of this header file.
1736 *
1737 * @param c the code point to be tested
1738 * @return TRUE if the code point is a hexadecimal digit
1739 *
1740 * @stable ICU 2.6
1741 */
1742U_STABLE UBool U_EXPORT2
1743u_isxdigit(UChar32 c);
1744
1745/**
1746 * Determines whether the specified code point is a punctuation character.
1747 * True for characters with general categories "P" (punctuation).
1748 *
1749 * This is a C/POSIX migration function.
1750 * See the comments about C/POSIX character classification functions in the
1751 * documentation at the top of this header file.
1752 *
1753 * @param c the code point to be tested
1754 * @return TRUE if the code point is a punctuation character
1755 *
1756 * @stable ICU 2.6
1757 */
1758U_STABLE UBool U_EXPORT2
1759u_ispunct(UChar32 c);
1760
1761/**
1762 * Determines whether the specified code point is a "graphic" character
1763 * (printable, excluding spaces).
1764 * TRUE for all characters except those with general categories
1765 * "Cc" (control codes), "Cf" (format controls), "Cs" (surrogates),
1766 * "Cn" (unassigned), and "Z" (separators).
1767 *
1768 * This is a C/POSIX migration function.
1769 * See the comments about C/POSIX character classification functions in the
1770 * documentation at the top of this header file.
1771 *
1772 * @param c the code point to be tested
1773 * @return TRUE if the code point is a "graphic" character
1774 *
1775 * @stable ICU 2.6
1776 */
1777U_STABLE UBool U_EXPORT2
1778u_isgraph(UChar32 c);
1779
1780/**
1781 * Determines whether the specified code point is a "blank" or "horizontal space",
1782 * a character that visibly separates words on a line.
1783 * The following are equivalent definitions:
1784 *
1785 * TRUE for Unicode White_Space characters except for "vertical space controls"
1786 * where "vertical space controls" are the following characters:
1787 * U+000A (LF) U+000B (VT) U+000C (FF) U+000D (CR) U+0085 (NEL) U+2028 (LS) U+2029 (PS)
1788 *
1789 * same as
1790 *
1791 * TRUE for U+0009 (TAB) and characters with general category "Zs" (space separators)
1792 * except Zero Width Space (ZWSP, U+200B).
1793 *
1794 * Note: There are several ICU whitespace functions; please see the uchar.h
1795 * file documentation for a detailed comparison.
1796 *
1797 * This is a C/POSIX migration function.
1798 * See the comments about C/POSIX character classification functions in the
1799 * documentation at the top of this header file.
1800 *
1801 * @param c the code point to be tested
1802 * @return TRUE if the code point is a "blank"
1803 *
1804 * @stable ICU 2.6
1805 */
1806U_STABLE UBool U_EXPORT2
1807u_isblank(UChar32 c);
1808
1809/**
1810 * Determines whether the specified code point is "defined",
1811 * which usually means that it is assigned a character.
1812 * True for general categories other than "Cn" (other, not assigned),
1813 * i.e., true for all code points mentioned in UnicodeData.txt.
1814 *
1815 * Note that non-character code points (e.g., U+FDD0) are not "defined"
1816 * (they are Cn), but surrogate code points are "defined" (Cs).
1817 *
1818 * Same as java.lang.Character.isDefined().
1819 *
1820 * @param c the code point to be tested
1821 * @return TRUE if the code point is assigned a character
1822 *
1823 * @see u_isdigit
1824 * @see u_isalpha
1825 * @see u_isalnum
1826 * @see u_isupper
1827 * @see u_islower
1828 * @see u_istitle
1829 * @stable ICU 2.0
1830 */
1831U_STABLE UBool U_EXPORT2
1832u_isdefined(UChar32 c);
1833
1834/**
1835 * Determines if the specified character is a space character or not.
1836 *
1837 * Note: There are several ICU whitespace functions; please see the uchar.h
1838 * file documentation for a detailed comparison.
1839 *
1840 * This is a C/POSIX migration function.
1841 * See the comments about C/POSIX character classification functions in the
1842 * documentation at the top of this header file.
1843 *
1844 * @param c    the character to be tested
1845 * @return  true if the character is a space character; false otherwise.
1846 *
1847 * @see u_isJavaSpaceChar
1848 * @see u_isWhitespace
1849 * @see u_isUWhiteSpace
1850 * @stable ICU 2.0
1851 */
1852U_STABLE UBool U_EXPORT2
1853u_isspace(UChar32 c);
1854
1855/**
1856 * Determine if the specified code point is a space character according to Java.
1857 * True for characters with general categories "Z" (separators),
1858 * which does not include control codes (e.g., TAB or Line Feed).
1859 *
1860 * Same as java.lang.Character.isSpaceChar().
1861 *
1862 * Note: There are several ICU whitespace functions; please see the uchar.h
1863 * file documentation for a detailed comparison.
1864 *
1865 * @param c the code point to be tested
1866 * @return TRUE if the code point is a space character according to Character.isSpaceChar()
1867 *
1868 * @see u_isspace
1869 * @see u_isWhitespace
1870 * @see u_isUWhiteSpace
1871 * @stable ICU 2.6
1872 */
1873U_STABLE UBool U_EXPORT2
1874u_isJavaSpaceChar(UChar32 c);
1875
1876/**
1877 * Determines if the specified code point is a whitespace character according to Java/ICU.
1878 * A character is considered to be a Java whitespace character if and only
1879 * if it satisfies one of the following criteria:
1880 *
1881 * - It is a Unicode separator (categories "Z"), but is not
1882 *      a no-break space (U+00A0 NBSP or U+2007 Figure Space or U+202F Narrow NBSP).
1883 * - It is U+0009 HORIZONTAL TABULATION.
1884 * - It is U+000A LINE FEED.
1885 * - It is U+000B VERTICAL TABULATION.
1886 * - It is U+000C FORM FEED.
1887 * - It is U+000D CARRIAGE RETURN.
1888 * - It is U+001C FILE SEPARATOR.
1889 * - It is U+001D GROUP SEPARATOR.
1890 * - It is U+001E RECORD SEPARATOR.
1891 * - It is U+001F UNIT SEPARATOR.
1892 * - It is U+0085 NEXT LINE.
1893 *
1894 * Same as java.lang.Character.isWhitespace() except that Java omits U+0085.
1895 *
1896 * Note: There are several ICU whitespace functions; please see the uchar.h
1897 * file documentation for a detailed comparison.
1898 *
1899 * @param c the code point to be tested
1900 * @return TRUE if the code point is a whitespace character according to Java/ICU
1901 *
1902 * @see u_isspace
1903 * @see u_isJavaSpaceChar
1904 * @see u_isUWhiteSpace
1905 * @stable ICU 2.0
1906 */
1907U_STABLE UBool U_EXPORT2
1908u_isWhitespace(UChar32 c);
1909
1910/**
1911 * Determines whether the specified code point is a control character
1912 * (as defined by this function).
1913 * A control character is one of the following:
1914 * - ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
1915 * - U_CONTROL_CHAR (Cc)
1916 * - U_FORMAT_CHAR (Cf)
1917 * - U_LINE_SEPARATOR (Zl)
1918 * - U_PARAGRAPH_SEPARATOR (Zp)
1919 *
1920 * This is a C/POSIX migration function.
1921 * See the comments about C/POSIX character classification functions in the
1922 * documentation at the top of this header file.
1923 *
1924 * @param c the code point to be tested
1925 * @return TRUE if the code point is a control character
1926 *
1927 * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
1928 * @see u_isprint
1929 * @stable ICU 2.0
1930 */
1931U_STABLE UBool U_EXPORT2
1932u_iscntrl(UChar32 c);
1933
1934/**
1935 * Determines whether the specified code point is an ISO control code.
1936 * True for U+0000..U+001f and U+007f..U+009f (general category "Cc").
1937 *
1938 * Same as java.lang.Character.isISOControl().
1939 *
1940 * @param c the code point to be tested
1941 * @return TRUE if the code point is an ISO control code
1942 *
1943 * @see u_iscntrl
1944 * @stable ICU 2.6
1945 */
1946U_STABLE UBool U_EXPORT2
1947u_isISOControl(UChar32 c);
1948
1949/**
1950 * Determines whether the specified code point is a printable character.
1951 * True for general categories <em>other</em> than "C" (controls).
1952 *
1953 * This is a C/POSIX migration function.
1954 * See the comments about C/POSIX character classification functions in the
1955 * documentation at the top of this header file.
1956 *
1957 * @param c the code point to be tested
1958 * @return TRUE if the code point is a printable character
1959 *
1960 * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
1961 * @see u_iscntrl
1962 * @stable ICU 2.0
1963 */
1964U_STABLE UBool U_EXPORT2
1965u_isprint(UChar32 c);
1966
1967/**
1968 * Determines whether the specified code point is a base character.
1969 * True for general categories "L" (letters), "N" (numbers),
1970 * "Mc" (spacing combining marks), and "Me" (enclosing marks).
1971 *
1972 * Note that this is different from the Unicode definition in
1973 * chapter 3.5, conformance clause D13,
1974 * which defines base characters to be all characters (not Cn)
1975 * that do not graphically combine with preceding characters (M)
1976 * and that are neither control (Cc) or format (Cf) characters.
1977 *
1978 * @param c the code point to be tested
1979 * @return TRUE if the code point is a base character according to this function
1980 *
1981 * @see u_isalpha
1982 * @see u_isdigit
1983 * @stable ICU 2.0
1984 */
1985U_STABLE UBool U_EXPORT2
1986u_isbase(UChar32 c);
1987
1988/**
1989 * Returns the bidirectional category value for the code point,
1990 * which is used in the Unicode bidirectional algorithm
1991 * (UAX #9 http://www.unicode.org/reports/tr9/).
1992 * Note that some <em>unassigned</em> code points have bidi values
1993 * of R or AL because they are in blocks that are reserved
1994 * for Right-To-Left scripts.
1995 *
1996 * Same as java.lang.Character.getDirectionality()
1997 *
1998 * @param c the code point to be tested
1999 * @return the bidirectional category (UCharDirection) value
2000 *
2001 * @see UCharDirection
2002 * @stable ICU 2.0
2003 */
2004U_STABLE UCharDirection U_EXPORT2
2005u_charDirection(UChar32 c);
2006
2007/**
2008 * Determines whether the code point has the Bidi_Mirrored property.
2009 * This property is set for characters that are commonly used in
2010 * Right-To-Left contexts and need to be displayed with a "mirrored"
2011 * glyph.
2012 *
2013 * Same as java.lang.Character.isMirrored().
2014 * Same as UCHAR_BIDI_MIRRORED
2015 *
2016 * @param c the code point to be tested
2017 * @return TRUE if the character has the Bidi_Mirrored property
2018 *
2019 * @see UCHAR_BIDI_MIRRORED
2020 * @stable ICU 2.0
2021 */
2022U_STABLE UBool U_EXPORT2
2023u_isMirrored(UChar32 c);
2024
2025/**
2026 * Maps the specified character to a "mirror-image" character.
2027 * For characters with the Bidi_Mirrored property, implementations
2028 * sometimes need a "poor man's" mapping to another Unicode
2029 * character (code point) such that the default glyph may serve
2030 * as the mirror-image of the default glyph of the specified
2031 * character. This is useful for text conversion to and from
2032 * codepages with visual order, and for displays without glyph
2033 * selecetion capabilities.
2034 *
2035 * @param c the code point to be mapped
2036 * @return another Unicode code point that may serve as a mirror-image
2037 *         substitute, or c itself if there is no such mapping or c
2038 *         does not have the Bidi_Mirrored property
2039 *
2040 * @see UCHAR_BIDI_MIRRORED
2041 * @see u_isMirrored
2042 * @stable ICU 2.0
2043 */
2044U_STABLE UChar32 U_EXPORT2
2045u_charMirror(UChar32 c);
2046
2047/**
2048 * Returns the general category value for the code point.
2049 *
2050 * Same as java.lang.Character.getType().
2051 *
2052 * @param c the code point to be tested
2053 * @return the general category (UCharCategory) value
2054 *
2055 * @see UCharCategory
2056 * @stable ICU 2.0
2057 */
2058U_STABLE int8_t U_EXPORT2
2059u_charType(UChar32 c);
2060
2061/**
2062 * Get a single-bit bit set for the general category of a character.
2063 * This bit set can be compared bitwise with U_GC_SM_MASK, U_GC_L_MASK, etc.
2064 * Same as U_MASK(u_charType(c)).
2065 *
2066 * @param c the code point to be tested
2067 * @return a single-bit mask corresponding to the general category (UCharCategory) value
2068 *
2069 * @see u_charType
2070 * @see UCharCategory
2071 * @see U_GC_CN_MASK
2072 * @stable ICU 2.1
2073 */
2074#define U_GET_GC_MASK(c) U_MASK(u_charType(c))
2075
2076/**
2077 * Callback from u_enumCharTypes(), is called for each contiguous range
2078 * of code points c (where start<=c<limit)
2079 * with the same Unicode general category ("character type").
2080 *
2081 * The callback function can stop the enumeration by returning FALSE.
2082 *
2083 * @param context an opaque pointer, as passed into utrie_enum()
2084 * @param start the first code point in a contiguous range with value
2085 * @param limit one past the last code point in a contiguous range with value
2086 * @param type the general category for all code points in [start..limit[
2087 * @return FALSE to stop the enumeration
2088 *
2089 * @stable ICU 2.1
2090 * @see UCharCategory
2091 * @see u_enumCharTypes
2092 */
2093typedef UBool U_CALLCONV
2094UCharEnumTypeRange(const void *context, UChar32 start, UChar32 limit, UCharCategory type);
2095
2096/**
2097 * Enumerate efficiently all code points with their Unicode general categories.
2098 *
2099 * This is useful for building data structures (e.g., UnicodeSet's),
2100 * for enumerating all assigned code points (type!=U_UNASSIGNED), etc.
2101 *
2102 * For each contiguous range of code points with a given general category ("character type"),
2103 * the UCharEnumTypeRange function is called.
2104 * Adjacent ranges have different types.
2105 * The Unicode Standard guarantees that the numeric value of the type is 0..31.
2106 *
2107 * @param enumRange a pointer to a function that is called for each contiguous range
2108 *                  of code points with the same general category
2109 * @param context an opaque pointer that is passed on to the callback function
2110 *
2111 * @stable ICU 2.1
2112 * @see UCharCategory
2113 * @see UCharEnumTypeRange
2114 */
2115U_STABLE void U_EXPORT2
2116u_enumCharTypes(UCharEnumTypeRange *enumRange, const void *context);
2117
2118#if !UCONFIG_NO_NORMALIZATION
2119
2120/**
2121 * Returns the combining class of the code point as specified in UnicodeData.txt.
2122 *
2123 * @param c the code point of the character
2124 * @return the combining class of the character
2125 * @stable ICU 2.0
2126 */
2127U_STABLE uint8_t U_EXPORT2
2128u_getCombiningClass(UChar32 c);
2129
2130#endif
2131
2132/**
2133 * Returns the decimal digit value of a decimal digit character.
2134 * Such characters have the general category "Nd" (decimal digit numbers)
2135 * and a Numeric_Type of Decimal.
2136 *
2137 * Unlike ICU releases before 2.6, no digit values are returned for any
2138 * Han characters because Han number characters are often used with a special
2139 * Chinese-style number format (with characters for powers of 10 in between)
2140 * instead of in decimal-positional notation.
2141 * Unicode 4 explicitly assigns Han number characters the Numeric_Type
2142 * Numeric instead of Decimal.
2143 * See Jitterbug 1483 for more details.
2144 *
2145 * Use u_getIntPropertyValue(c, UCHAR_NUMERIC_TYPE) and u_getNumericValue()
2146 * for complete numeric Unicode properties.
2147 *
2148 * @param c the code point for which to get the decimal digit value
2149 * @return the decimal digit value of c,
2150 *         or -1 if c is not a decimal digit character
2151 *
2152 * @see u_getNumericValue
2153 * @stable ICU 2.0
2154 */
2155U_STABLE int32_t U_EXPORT2
2156u_charDigitValue(UChar32 c);
2157
2158/**
2159 * Returns the Unicode allocation block that contains the character.
2160 *
2161 * @param c the code point to be tested
2162 * @return the block value (UBlockCode) for c
2163 *
2164 * @see UBlockCode
2165 * @stable ICU 2.0
2166 */
2167U_STABLE UBlockCode U_EXPORT2
2168ublock_getCode(UChar32 c);
2169
2170/**
2171 * Retrieve the name of a Unicode character.
2172 * Depending on <code>nameChoice</code>, the character name written
2173 * into the buffer is the "modern" name or the name that was defined
2174 * in Unicode version 1.0.
2175 * The name contains only "invariant" characters
2176 * like A-Z, 0-9, space, and '-'.
2177 * Unicode 1.0 names are only retrieved if they are different from the modern
2178 * names and if the data file contains the data for them. gennames may or may
2179 * not be called with a command line option to include 1.0 names in unames.dat.
2180 *
2181 * @param code The character (code point) for which to get the name.
2182 *             It must be <code>0<=code<=0x10ffff</code>.
2183 * @param nameChoice Selector for which name to get.
2184 * @param buffer Destination address for copying the name.
2185 *               The name will always be zero-terminated.
2186 *               If there is no name, then the buffer will be set to the empty string.
2187 * @param bufferLength <code>==sizeof(buffer)</code>
2188 * @param pErrorCode Pointer to a UErrorCode variable;
2189 *        check for <code>U_SUCCESS()</code> after <code>u_charName()</code>
2190 *        returns.
2191 * @return The length of the name, or 0 if there is no name for this character.
2192 *         If the bufferLength is less than or equal to the length, then the buffer
2193 *         contains the truncated name and the returned length indicates the full
2194 *         length of the name.
2195 *         The length does not include the zero-termination.
2196 *
2197 * @see UCharNameChoice
2198 * @see u_charFromName
2199 * @see u_enumCharNames
2200 * @stable ICU 2.0
2201 */
2202U_STABLE int32_t U_EXPORT2
2203u_charName(UChar32 code, UCharNameChoice nameChoice,
2204           char *buffer, int32_t bufferLength,
2205           UErrorCode *pErrorCode);
2206
2207/**
2208 * Get the ISO 10646 comment for a character.
2209 * The ISO 10646 comment is an informative field in the Unicode Character
2210 * Database (UnicodeData.txt field 11) and is from the ISO 10646 names list.
2211 *
2212 * @param c The character (code point) for which to get the ISO comment.
2213 *             It must be <code>0<=c<=0x10ffff</code>.
2214 * @param dest Destination address for copying the comment.
2215 *             The comment will be zero-terminated if possible.
2216 *             If there is no comment, then the buffer will be set to the empty string.
2217 * @param destCapacity <code>==sizeof(dest)</code>
2218 * @param pErrorCode Pointer to a UErrorCode variable;
2219 *        check for <code>U_SUCCESS()</code> after <code>u_getISOComment()</code>
2220 *        returns.
2221 * @return The length of the comment, or 0 if there is no comment for this character.
2222 *         If the destCapacity is less than or equal to the length, then the buffer
2223 *         contains the truncated name and the returned length indicates the full
2224 *         length of the name.
2225 *         The length does not include the zero-termination.
2226 *
2227 * @stable ICU 2.2
2228 */
2229U_STABLE int32_t U_EXPORT2
2230u_getISOComment(UChar32 c,
2231                char *dest, int32_t destCapacity,
2232                UErrorCode *pErrorCode);
2233
2234/**
2235 * Find a Unicode character by its name and return its code point value.
2236 * The name is matched exactly and completely.
2237 * If the name does not correspond to a code point, <i>pErrorCode</i>
2238 * is set to <code>U_INVALID_CHAR_FOUND</code>.
2239 * A Unicode 1.0 name is matched only if it differs from the modern name.
2240 * Unicode names are all uppercase. Extended names are lowercase followed
2241 * by an uppercase hexadecimal number, and within angle brackets.
2242 *
2243 * @param nameChoice Selector for which name to match.
2244 * @param name The name to match.
2245 * @param pErrorCode Pointer to a UErrorCode variable
2246 * @return The Unicode value of the code point with the given name,
2247 *         or an undefined value if there is no such code point.
2248 *
2249 * @see UCharNameChoice
2250 * @see u_charName
2251 * @see u_enumCharNames
2252 * @stable ICU 1.7
2253 */
2254U_STABLE UChar32 U_EXPORT2
2255u_charFromName(UCharNameChoice nameChoice,
2256               const char *name,
2257               UErrorCode *pErrorCode);
2258
2259/**
2260 * Type of a callback function for u_enumCharNames() that gets called
2261 * for each Unicode character with the code point value and
2262 * the character name.
2263 * If such a function returns FALSE, then the enumeration is stopped.
2264 *
2265 * @param context The context pointer that was passed to u_enumCharNames().
2266 * @param code The Unicode code point for the character with this name.
2267 * @param nameChoice Selector for which kind of names is enumerated.
2268 * @param name The character's name, zero-terminated.
2269 * @param length The length of the name.
2270 * @return TRUE if the enumeration should continue, FALSE to stop it.
2271 *
2272 * @see UCharNameChoice
2273 * @see u_enumCharNames
2274 * @stable ICU 1.7
2275 */
2276typedef UBool UEnumCharNamesFn(void *context,
2277                               UChar32 code,
2278                               UCharNameChoice nameChoice,
2279                               const char *name,
2280                               int32_t length);
2281
2282/**
2283 * Enumerate all assigned Unicode characters between the start and limit
2284 * code points (start inclusive, limit exclusive) and call a function
2285 * for each, passing the code point value and the character name.
2286 * For Unicode 1.0 names, only those are enumerated that differ from the
2287 * modern names.
2288 *
2289 * @param start The first code point in the enumeration range.
2290 * @param limit One more than the last code point in the enumeration range
2291 *              (the first one after the range).
2292 * @param fn The function that is to be called for each character name.
2293 * @param context An arbitrary pointer that is passed to the function.
2294 * @param nameChoice Selector for which kind of names to enumerate.
2295 * @param pErrorCode Pointer to a UErrorCode variable
2296 *
2297 * @see UCharNameChoice
2298 * @see UEnumCharNamesFn
2299 * @see u_charName
2300 * @see u_charFromName
2301 * @stable ICU 1.7
2302 */
2303U_STABLE void U_EXPORT2
2304u_enumCharNames(UChar32 start, UChar32 limit,
2305                UEnumCharNamesFn *fn,
2306                void *context,
2307                UCharNameChoice nameChoice,
2308                UErrorCode *pErrorCode);
2309
2310/**
2311 * Return the Unicode name for a given property, as given in the
2312 * Unicode database file PropertyAliases.txt.
2313 *
2314 * In addition, this function maps the property
2315 * UCHAR_GENERAL_CATEGORY_MASK to the synthetic names "gcm" /
2316 * "General_Category_Mask".  These names are not in
2317 * PropertyAliases.txt.
2318 *
2319 * @param property UProperty selector other than UCHAR_INVALID_CODE.
2320 *         If out of range, NULL is returned.
2321 *
2322 * @param nameChoice selector for which name to get.  If out of range,
2323 *         NULL is returned.  All properties have a long name.  Most
2324 *         have a short name, but some do not.  Unicode allows for
2325 *         additional names; if present these will be returned by
2326 *         U_LONG_PROPERTY_NAME + i, where i=1, 2,...
2327 *
2328 * @return a pointer to the name, or NULL if either the
2329 *         property or the nameChoice is out of range.  If a given
2330 *         nameChoice returns NULL, then all larger values of
2331 *         nameChoice will return NULL, with one exception: if NULL is
2332 *         returned for U_SHORT_PROPERTY_NAME, then
2333 *         U_LONG_PROPERTY_NAME (and higher) may still return a
2334 *         non-NULL value.  The returned pointer is valid until
2335 *         u_cleanup() is called.
2336 *
2337 * @see UProperty
2338 * @see UPropertyNameChoice
2339 * @stable ICU 2.4
2340 */
2341U_STABLE const char* U_EXPORT2
2342u_getPropertyName(UProperty property,
2343                  UPropertyNameChoice nameChoice);
2344
2345/**
2346 * Return the UProperty enum for a given property name, as specified
2347 * in the Unicode database file PropertyAliases.txt.  Short, long, and
2348 * any other variants are recognized.
2349 *
2350 * In addition, this function maps the synthetic names "gcm" /
2351 * "General_Category_Mask" to the property
2352 * UCHAR_GENERAL_CATEGORY_MASK.  These names are not in
2353 * PropertyAliases.txt.
2354 *
2355 * @param alias the property name to be matched.  The name is compared
2356 *         using "loose matching" as described in PropertyAliases.txt.
2357 *
2358 * @return a UProperty enum, or UCHAR_INVALID_CODE if the given name
2359 *         does not match any property.
2360 *
2361 * @see UProperty
2362 * @stable ICU 2.4
2363 */
2364U_STABLE UProperty U_EXPORT2
2365u_getPropertyEnum(const char* alias);
2366
2367/**
2368 * Return the Unicode name for a given property value, as given in the
2369 * Unicode database file PropertyValueAliases.txt.
2370 *
2371 * Note: Some of the names in PropertyValueAliases.txt can only be
2372 * retrieved using UCHAR_GENERAL_CATEGORY_MASK, not
2373 * UCHAR_GENERAL_CATEGORY.  These include: "C" / "Other", "L" /
2374 * "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P"
2375 * / "Punctuation", "S" / "Symbol", and "Z" / "Separator".
2376 *
2377 * @param property UProperty selector constant.
2378 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
2379 *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
2380 *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
2381 *        If out of range, NULL is returned.
2382 *
2383 * @param value selector for a value for the given property.  If out
2384 *         of range, NULL is returned.  In general, valid values range
2385 *         from 0 up to some maximum.  There are a few exceptions:
2386 *         (1.) UCHAR_BLOCK values begin at the non-zero value
2387 *         UBLOCK_BASIC_LATIN.  (2.)  UCHAR_CANONICAL_COMBINING_CLASS
2388 *         values are not contiguous and range from 0..240.  (3.)
2389 *         UCHAR_GENERAL_CATEGORY_MASK values are not values of
2390 *         UCharCategory, but rather mask values produced by
2391 *         U_GET_GC_MASK().  This allows grouped categories such as
2392 *         [:L:] to be represented.  Mask values range
2393 *         non-contiguously from 1..U_GC_P_MASK.
2394 *
2395 * @param nameChoice selector for which name to get.  If out of range,
2396 *         NULL is returned.  All values have a long name.  Most have
2397 *         a short name, but some do not.  Unicode allows for
2398 *         additional names; if present these will be returned by
2399 *         U_LONG_PROPERTY_NAME + i, where i=1, 2,...
2400
2401 * @return a pointer to the name, or NULL if either the
2402 *         property or the nameChoice is out of range.  If a given
2403 *         nameChoice returns NULL, then all larger values of
2404 *         nameChoice will return NULL, with one exception: if NULL is
2405 *         returned for U_SHORT_PROPERTY_NAME, then
2406 *         U_LONG_PROPERTY_NAME (and higher) may still return a
2407 *         non-NULL value.  The returned pointer is valid until
2408 *         u_cleanup() is called.
2409 *
2410 * @see UProperty
2411 * @see UPropertyNameChoice
2412 * @stable ICU 2.4
2413 */
2414U_STABLE const char* U_EXPORT2
2415u_getPropertyValueName(UProperty property,
2416                       int32_t value,
2417                       UPropertyNameChoice nameChoice);
2418
2419/**
2420 * Return the property value integer for a given value name, as
2421 * specified in the Unicode database file PropertyValueAliases.txt.
2422 * Short, long, and any other variants are recognized.
2423 *
2424 * Note: Some of the names in PropertyValueAliases.txt will only be
2425 * recognized with UCHAR_GENERAL_CATEGORY_MASK, not
2426 * UCHAR_GENERAL_CATEGORY.  These include: "C" / "Other", "L" /
2427 * "Letter", "LC" / "Cased_Letter", "M" / "Mark", "N" / "Number", "P"
2428 * / "Punctuation", "S" / "Symbol", and "Z" / "Separator".
2429 *
2430 * @param property UProperty selector constant.
2431 *        Must be UCHAR_BINARY_START<=which<UCHAR_BINARY_LIMIT
2432 *        or UCHAR_INT_START<=which<UCHAR_INT_LIMIT
2433 *        or UCHAR_MASK_START<=which<UCHAR_MASK_LIMIT.
2434 *        If out of range, UCHAR_INVALID_CODE is returned.
2435 *
2436 * @param alias the value name to be matched.  The name is compared
2437 *         using "loose matching" as described in
2438 *         PropertyValueAliases.txt.
2439 *
2440 * @return a value integer or UCHAR_INVALID_CODE if the given name
2441 *         does not match any value of the given property, or if the
2442 *         property is invalid.  Note: U CHAR_GENERAL_CATEGORY values
2443 *         are not values of UCharCategory, but rather mask values
2444 *         produced by U_GET_GC_MASK().  This allows grouped
2445 *         categories such as [:L:] to be represented.
2446 *
2447 * @see UProperty
2448 * @stable ICU 2.4
2449 */
2450U_STABLE int32_t U_EXPORT2
2451u_getPropertyValueEnum(UProperty property,
2452                       const char* alias);
2453
2454/**
2455 * Determines if the specified character is permissible as the
2456 * first character in an identifier according to Unicode
2457 * (The Unicode Standard, Version 3.0, chapter 5.16 Identifiers).
2458 * True for characters with general categories "L" (letters) and "Nl" (letter numbers).
2459 *
2460 * Same as java.lang.Character.isUnicodeIdentifierStart().
2461 * Same as UCHAR_ID_START
2462 *
2463 * @param c the code point to be tested
2464 * @return TRUE if the code point may start an identifier
2465 *
2466 * @see UCHAR_ID_START
2467 * @see u_isalpha
2468 * @see u_isIDPart
2469 * @stable ICU 2.0
2470 */
2471U_STABLE UBool U_EXPORT2
2472u_isIDStart(UChar32 c);
2473
2474/**
2475 * Determines if the specified character is permissible
2476 * in an identifier according to Java.
2477 * True for characters with general categories "L" (letters),
2478 * "Nl" (letter numbers), "Nd" (decimal digits),
2479 * "Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and
2480 * u_isIDIgnorable(c).
2481 *
2482 * Same as java.lang.Character.isUnicodeIdentifierPart().
2483 * Almost the same as Unicode's ID_Continue (UCHAR_ID_CONTINUE)
2484 * except that Unicode recommends to ignore Cf which is less than
2485 * u_isIDIgnorable(c).
2486 *
2487 * @param c the code point to be tested
2488 * @return TRUE if the code point may occur in an identifier according to Java
2489 *
2490 * @see UCHAR_ID_CONTINUE
2491 * @see u_isIDStart
2492 * @see u_isIDIgnorable
2493 * @stable ICU 2.0
2494 */
2495U_STABLE UBool U_EXPORT2
2496u_isIDPart(UChar32 c);
2497
2498/**
2499 * Determines if the specified character should be regarded
2500 * as an ignorable character in an identifier,
2501 * according to Java.
2502 * True for characters with general category "Cf" (format controls) as well as
2503 * non-whitespace ISO controls
2504 * (U+0000..U+0008, U+000E..U+001B, U+007F..U+0084, U+0086..U+009F).
2505 *
2506 * Same as java.lang.Character.isIdentifierIgnorable()
2507 * except that Java also returns TRUE for U+0085 Next Line
2508 * (it omits U+0085 from whitespace ISO controls).
2509 *
2510 * Note that Unicode just recommends to ignore Cf (format controls).
2511 *
2512 * @param c the code point to be tested
2513 * @return TRUE if the code point is ignorable in identifiers according to Java
2514 *
2515 * @see UCHAR_DEFAULT_IGNORABLE_CODE_POINT
2516 * @see u_isIDStart
2517 * @see u_isIDPart
2518 * @stable ICU 2.0
2519 */
2520U_STABLE UBool U_EXPORT2
2521u_isIDIgnorable(UChar32 c);
2522
2523/**
2524 * Determines if the specified character is permissible as the
2525 * first character in a Java identifier.
2526 * In addition to u_isIDStart(c), true for characters with
2527 * general categories "Sc" (currency symbols) and "Pc" (connecting punctuation).
2528 *
2529 * Same as java.lang.Character.isJavaIdentifierStart().
2530 *
2531 * @param c the code point to be tested
2532 * @return TRUE if the code point may start a Java identifier
2533 *
2534 * @see     u_isJavaIDPart
2535 * @see     u_isalpha
2536 * @see     u_isIDStart
2537 * @stable ICU 2.0
2538 */
2539U_STABLE UBool U_EXPORT2
2540u_isJavaIDStart(UChar32 c);
2541
2542/**
2543 * Determines if the specified character is permissible
2544 * in a Java identifier.
2545 * In addition to u_isIDPart(c), true for characters with
2546 * general category "Sc" (currency symbols).
2547 *
2548 * Same as java.lang.Character.isJavaIdentifierPart().
2549 *
2550 * @param c the code point to be tested
2551 * @return TRUE if the code point may occur in a Java identifier
2552 *
2553 * @see     u_isIDIgnorable
2554 * @see     u_isJavaIDStart
2555 * @see     u_isalpha
2556 * @see     u_isdigit
2557 * @see     u_isIDPart
2558 * @stable ICU 2.0
2559 */
2560U_STABLE UBool U_EXPORT2
2561u_isJavaIDPart(UChar32 c);
2562
2563/**
2564 * The given character is mapped to its lowercase equivalent according to
2565 * UnicodeData.txt; if the character has no lowercase equivalent, the character
2566 * itself is returned.
2567 *
2568 * Same as java.lang.Character.toLowerCase().
2569 *
2570 * This function only returns the simple, single-code point case mapping.
2571 * Full case mappings may result in zero, one or more code points and depend
2572 * on context or language etc.
2573 * Full case mappings are applied by the string case mapping functions,
2574 * see ustring.h and the UnicodeString class.
2575 *
2576 * @param c the code point to be mapped
2577 * @return the Simple_Lowercase_Mapping of the code point, if any;
2578 *         otherwise the code point itself.
2579 * @stable ICU 2.0
2580 */
2581U_STABLE UChar32 U_EXPORT2
2582u_tolower(UChar32 c);
2583
2584/**
2585 * The given character is mapped to its uppercase equivalent according to UnicodeData.txt;
2586 * if the character has no uppercase equivalent, the character itself is
2587 * returned.
2588 *
2589 * Same as java.lang.Character.toUpperCase().
2590 *
2591 * This function only returns the simple, single-code point case mapping.
2592 * Full case mappings may result in zero, one or more code points and depend
2593 * on context or language etc.
2594 * Full case mappings are applied by the string case mapping functions,
2595 * see ustring.h and the UnicodeString class.
2596 *
2597 * @param c the code point to be mapped
2598 * @return the Simple_Uppercase_Mapping of the code point, if any;
2599 *         otherwise the code point itself.
2600 * @stable ICU 2.0
2601 */
2602U_STABLE UChar32 U_EXPORT2
2603u_toupper(UChar32 c);
2604
2605/**
2606 * The given character is mapped to its titlecase equivalent
2607 * according to UnicodeData.txt;
2608 * if none is defined, the character itself is returned.
2609 *
2610 * Same as java.lang.Character.toTitleCase().
2611 *
2612 * This function only returns the simple, single-code point case mapping.
2613 * Full case mappings may result in zero, one or more code points and depend
2614 * on context or language etc.
2615 * Full case mappings are applied by the string case mapping functions,
2616 * see ustring.h and the UnicodeString class.
2617 *
2618 * @param c the code point to be mapped
2619 * @return the Simple_Titlecase_Mapping of the code point, if any;
2620 *         otherwise the code point itself.
2621 * @stable ICU 2.0
2622 */
2623U_STABLE UChar32 U_EXPORT2
2624u_totitle(UChar32 c);
2625
2626/** Option value for case folding: use default mappings defined in CaseFolding.txt. @stable ICU 2.0 */
2627#define U_FOLD_CASE_DEFAULT 0
2628
2629/**
2630 * Option value for case folding:
2631 *
2632 * Use the modified set of mappings provided in CaseFolding.txt to handle dotted I
2633 * and dotless i appropriately for Turkic languages (tr, az).
2634 *
2635 * Before Unicode 3.2, CaseFolding.txt contains mappings marked with 'I' that
2636 * are to be included for default mappings and
2637 * excluded for the Turkic-specific mappings.
2638 *
2639 * Unicode 3.2 CaseFolding.txt instead contains mappings marked with 'T' that
2640 * are to be excluded for default mappings and
2641 * included for the Turkic-specific mappings.
2642 *
2643 * @stable ICU 2.0
2644 */
2645#define U_FOLD_CASE_EXCLUDE_SPECIAL_I 1
2646
2647/**
2648 * The given character is mapped to its case folding equivalent according to
2649 * UnicodeData.txt and CaseFolding.txt;
2650 * if the character has no case folding equivalent, the character
2651 * itself is returned.
2652 *
2653 * This function only returns the simple, single-code point case mapping.
2654 * Full case mappings may result in zero, one or more code points and depend
2655 * on context or language etc.
2656 * Full case mappings are applied by the string case mapping functions,
2657 * see ustring.h and the UnicodeString class.
2658 *
2659 * @param c the code point to be mapped
2660 * @param options Either U_FOLD_CASE_DEFAULT or U_FOLD_CASE_EXCLUDE_SPECIAL_I
2661 * @return the Simple_Case_Folding of the code point, if any;
2662 *         otherwise the code point itself.
2663 * @stable ICU 2.0
2664 */
2665U_STABLE UChar32 U_EXPORT2
2666u_foldCase(UChar32 c, uint32_t options);
2667
2668/**
2669 * Returns the decimal digit value of the code point in the
2670 * specified radix.
2671 *
2672 * If the radix is not in the range <code>2<=radix<=36</code> or if the
2673 * value of <code>c</code> is not a valid digit in the specified
2674 * radix, <code>-1</code> is returned. A character is a valid digit
2675 * if at least one of the following is true:
2676 * <ul>
2677 * <li>The character has a decimal digit value.
2678 *     Such characters have the general category "Nd" (decimal digit numbers)
2679 *     and a Numeric_Type of Decimal.
2680 *     In this case the value is the character's decimal digit value.</li>
2681 * <li>The character is one of the uppercase Latin letters
2682 *     <code>'A'</code> through <code>'Z'</code>.
2683 *     In this case the value is <code>c-'A'+10</code>.</li>
2684 * <li>The character is one of the lowercase Latin letters
2685 *     <code>'a'</code> through <code>'z'</code>.
2686 *     In this case the value is <code>ch-'a'+10</code>.</li>
2687 * <li>Latin letters from both the ASCII range (0061..007A, 0041..005A)
2688 *     as well as from the Fullwidth ASCII range (FF41..FF5A, FF21..FF3A)
2689 *     are recognized.</li>
2690 * </ul>
2691 *
2692 * Same as java.lang.Character.digit().
2693 *
2694 * @param   ch      the code point to be tested.
2695 * @param   radix   the radix.
2696 * @return  the numeric value represented by the character in the
2697 *          specified radix,
2698 *          or -1 if there is no value or if the value exceeds the radix.
2699 *
2700 * @see     UCHAR_NUMERIC_TYPE
2701 * @see     u_forDigit
2702 * @see     u_charDigitValue
2703 * @see     u_isdigit
2704 * @stable ICU 2.0
2705 */
2706U_STABLE int32_t U_EXPORT2
2707u_digit(UChar32 ch, int8_t radix);
2708
2709/**
2710 * Determines the character representation for a specific digit in
2711 * the specified radix. If the value of <code>radix</code> is not a
2712 * valid radix, or the value of <code>digit</code> is not a valid
2713 * digit in the specified radix, the null character
2714 * (<code>U+0000</code>) is returned.
2715 * <p>
2716 * The <code>radix</code> argument is valid if it is greater than or
2717 * equal to 2 and less than or equal to 36.
2718 * The <code>digit</code> argument is valid if
2719 * <code>0 <= digit < radix</code>.
2720 * <p>
2721 * If the digit is less than 10, then
2722 * <code>'0' + digit</code> is returned. Otherwise, the value
2723 * <code>'a' + digit - 10</code> is returned.
2724 *
2725 * Same as java.lang.Character.forDigit().
2726 *
2727 * @param   digit   the number to convert to a character.
2728 * @param   radix   the radix.
2729 * @return  the <code>char</code> representation of the specified digit
2730 *          in the specified radix.
2731 *
2732 * @see     u_digit
2733 * @see     u_charDigitValue
2734 * @see     u_isdigit
2735 * @stable ICU 2.0
2736 */
2737U_STABLE UChar32 U_EXPORT2
2738u_forDigit(int32_t digit, int8_t radix);
2739
2740/**
2741 * Get the "age" of the code point.
2742 * The "age" is the Unicode version when the code point was first
2743 * designated (as a non-character or for Private Use)
2744 * or assigned a character.
2745 * This can be useful to avoid emitting code points to receiving
2746 * processes that do not accept newer characters.
2747 * The data is from the UCD file DerivedAge.txt.
2748 *
2749 * @param c The code point.
2750 * @param versionArray The Unicode version number array, to be filled in.
2751 *
2752 * @stable ICU 2.1
2753 */
2754U_STABLE void U_EXPORT2
2755u_charAge(UChar32 c, UVersionInfo versionArray);
2756
2757/**
2758 * Gets the Unicode version information.
2759 * The version array is filled in with the version information
2760 * for the Unicode standard that is currently used by ICU.
2761 * For example, Unicode version 3.1.1 is represented as an array with
2762 * the values { 3, 1, 1, 0 }.
2763 *
2764 * @param versionArray an output array that will be filled in with
2765 *                     the Unicode version number
2766 * @stable ICU 2.0
2767 */
2768U_STABLE void U_EXPORT2
2769u_getUnicodeVersion(UVersionInfo versionArray);
2770
2771/**
2772 * Get the FC_NFKC_Closure property string for a character.
2773 * See Unicode Standard Annex #15 for details, search for "FC_NFKC_Closure"
2774 * or for "FNC": http://www.unicode.org/reports/tr15/
2775 *
2776 * @param c The character (code point) for which to get the FC_NFKC_Closure string.
2777 *             It must be <code>0<=c<=0x10ffff</code>.
2778 * @param dest Destination address for copying the string.
2779 *             The string will be zero-terminated if possible.
2780 *             If there is no FC_NFKC_Closure string,
2781 *             then the buffer will be set to the empty string.
2782 * @param destCapacity <code>==sizeof(dest)</code>
2783 * @param pErrorCode Pointer to a UErrorCode variable.
2784 * @return The length of the string, or 0 if there is no FC_NFKC_Closure string for this character.
2785 *         If the destCapacity is less than or equal to the length, then the buffer
2786 *         contains the truncated name and the returned length indicates the full
2787 *         length of the name.
2788 *         The length does not include the zero-termination.
2789 *
2790 * @stable ICU 2.2
2791 */
2792U_STABLE int32_t U_EXPORT2
2793u_getFC_NFKC_Closure(UChar32 c, UChar *dest, int32_t destCapacity, UErrorCode *pErrorCode);
2794
2795U_CDECL_END
2796
2797#endif /*_UCHAR*/
2798/*eof*/
2799