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Date
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alphaindex.h
26.53
KB
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2023-02-22 10:03
appendable.h
8.53
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basictz.h
9.98
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2023-02-22 10:03
brkiter.h
27.81
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bytestream.h
10.75
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bytestrie.h
20.78
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bytestriebuilder.h
7.48
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calendar.h
102.25
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caniter.h
7.47
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casemap.h
25.33
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char16ptr.h
7.22
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chariter.h
24.06
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choicfmt.h
23.98
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coleitr.h
13.78
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coll.h
56.27
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compactdecimalformat.h
6.88
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curramt.h
3.78
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currpinf.h
7.3
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currunit.h
4.02
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datefmt.h
40.71
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dbbi.h
1.19
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dcfmtsym.h
20.61
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decimfmt.h
87.57
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displayoptions.h
7.11
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docmain.h
7.21
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dtfmtsym.h
38.22
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dtintrv.h
3.85
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dtitvfmt.h
49.27
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dtitvinf.h
18.63
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dtptngen.h
28.69
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dtrule.h
8.69
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edits.h
20.74
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enumset.h
2.08
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errorcode.h
4.84
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fieldpos.h
8.7
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filteredbrk.h
5.37
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fmtable.h
24.43
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format.h
12.5
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formattedvalue.h
9.75
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fpositer.h
3.03
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gender.h
3.35
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gregocal.h
31.04
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icudataver.h
1.02
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icuplug.h
11.83
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idna.h
12.71
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listformatter.h
8.61
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localebuilder.h
11.08
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localematcher.h
26.84
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localpointer.h
19.36
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locdspnm.h
7.12
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locid.h
47.66
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measfmt.h
11.42
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measunit.h
106.33
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measure.h
4.33
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messagepattern.h
33.71
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msgfmt.h
44.17
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normalizer2.h
33.66
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normlzr.h
30.96
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nounit.h
2.25
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numberformatter.h
94.82
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numberrangeformatter.h
25.02
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numfmt.h
49.84
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numsys.h
7.22
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parseerr.h
3.08
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parsepos.h
5.57
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platform.h
28.55
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plurfmt.h
25.25
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plurrule.h
20.62
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ptypes.h
3.49
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putil.h
6.32
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rbbi.h
28.46
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rbnf.h
49.82
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rbtz.h
15.77
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regex.h
84.41
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region.h
9.18
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reldatefmt.h
22.22
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rep.h
9.37
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resbund.h
18.09
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schriter.h
6.1
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scientificnumberformatter.h
6.44
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search.h
22.22
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selfmt.h
14.35
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simpleformatter.h
12.59
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simpletz.h
45.65
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smpdtfmt.h
71.93
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sortkey.h
11.18
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std_string.h
1.05
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strenum.h
9.92
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stringoptions.h
5.79
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stringpiece.h
10.05
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stringtriebuilder.h
15.47
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stsearch.h
21.42
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symtable.h
4.27
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tblcoll.h
36.92
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timezone.h
43.81
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tmunit.h
3.4
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tmutamt.h
4.91
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tmutfmt.h
7.42
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translit.h
65.82
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tzfmt.h
42.93
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tznames.h
16.85
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tzrule.h
34.86
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tztrans.h
6.13
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ubidi.h
89.61
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ubiditransform.h
12.71
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ubrk.h
24.43
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ucal.h
60.68
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ucasemap.h
15.21
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ucat.h
5.35
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uchar.h
145.09
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ucharstrie.h
22.53
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ucharstriebuilder.h
7.48
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uchriter.h
13.42
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uclean.h
11.2
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ucnv.h
83.46
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ucnv_cb.h
6.58
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ucnv_err.h
20.98
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ucnvsel.h
6.24
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ucol.h
61.95
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ucoleitr.h
9.82
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uconfig.h
12.07
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ucpmap.h
5.54
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ucptrie.h
22.51
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ucsdet.h
14.69
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ucurr.h
16.72
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udat.h
62.36
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udata.h
15.63
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udateintervalformat.h
11.93
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udatpg.h
30.18
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udisplaycontext.h
5.94
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udisplayoptions.h
8.8
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uenum.h
7.79
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ufieldpositer.h
4.41
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uformattable.h
10.97
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uformattedvalue.h
12.25
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ugender.h
2.06
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uidna.h
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uiter.h
22.75
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uldnames.h
10.48
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ulistformatter.h
10.78
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uloc.h
54.66
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ulocdata.h
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umachine.h
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umsg.h
24.25
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umutablecptrie.h
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unifilt.h
4
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unifunct.h
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unimatch.h
6.1
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unirepl.h
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uniset.h
66.12
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unistr.h
170.53
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unorm.h
20.55
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unorm2.h
24.68
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unum.h
56.6
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unumberformatter.h
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unumberrangeformatter.h
15.35
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unumsys.h
7.26
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uobject.h
10.68
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upluralrules.h
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uregex.h
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uregion.h
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ureldatefmt.h
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urename.h
135.69
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urep.h
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ures.h
36.54
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uscript.h
27.8
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usearch.h
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uset.h
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usetiter.h
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ushape.h
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uspoof.h
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utext.h
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utf.h
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utf16.h
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utf32.h
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utf8.h
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utf_old.h
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utrans.h
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utypes.h
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uvernum.h
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uversion.h
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vtzone.h
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Rename
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************* * * Copyright (C) 2009-2015, International Business Machines * Corporation and others. All Rights Reserved. * ******************************************************************************* * file name: unorm2.h * encoding: UTF-8 * tab size: 8 (not used) * indentation:4 * * created on: 2009dec15 * created by: Markus W. Scherer */ #ifndef __UNORM2_H__ #define __UNORM2_H__ /** * \file * \brief C API: New API for Unicode Normalization. * * Unicode normalization functionality for standard Unicode normalization or * for using custom mapping tables. * All instances of UNormalizer2 are unmodifiable/immutable. * Instances returned by unorm2_getInstance() are singletons that must not be deleted by the caller. * For more details see the Normalizer2 C++ class. */ #include "unicode/utypes.h" #include "unicode/stringoptions.h" #include "unicode/uset.h" #if U_SHOW_CPLUSPLUS_API #include "unicode/localpointer.h" #endif // U_SHOW_CPLUSPLUS_API /** * Constants for normalization modes. * For details about standard Unicode normalization forms * and about the algorithms which are also used with custom mapping tables * see http://www.unicode.org/unicode/reports/tr15/ * @stable ICU 4.4 */ typedef enum { /** * Decomposition followed by composition. * Same as standard NFC when using an "nfc" instance. * Same as standard NFKC when using an "nfkc" instance. * For details about standard Unicode normalization forms * see http://www.unicode.org/unicode/reports/tr15/ * @stable ICU 4.4 */ UNORM2_COMPOSE, /** * Map, and reorder canonically. * Same as standard NFD when using an "nfc" instance. * Same as standard NFKD when using an "nfkc" instance. * For details about standard Unicode normalization forms * see http://www.unicode.org/unicode/reports/tr15/ * @stable ICU 4.4 */ UNORM2_DECOMPOSE, /** * "Fast C or D" form. * If a string is in this form, then further decomposition <i>without reordering</i> * would yield the same form as DECOMPOSE. * Text in "Fast C or D" form can be processed efficiently with data tables * that are "canonically closed", that is, that provide equivalent data for * equivalent text, without having to be fully normalized. * Not a standard Unicode normalization form. * Not a unique form: Different FCD strings can be canonically equivalent. * For details see http://www.unicode.org/notes/tn5/#FCD * @stable ICU 4.4 */ UNORM2_FCD, /** * Compose only contiguously. * Also known as "FCC" or "Fast C Contiguous". * The result will often but not always be in NFC. * The result will conform to FCD which is useful for processing. * Not a standard Unicode normalization form. * For details see http://www.unicode.org/notes/tn5/#FCC * @stable ICU 4.4 */ UNORM2_COMPOSE_CONTIGUOUS } UNormalization2Mode; /** * Result values for normalization quick check functions. * For details see http://www.unicode.org/reports/tr15/#Detecting_Normalization_Forms * @stable ICU 2.0 */ typedef enum UNormalizationCheckResult { /** * The input string is not in the normalization form. * @stable ICU 2.0 */ UNORM_NO, /** * The input string is in the normalization form. * @stable ICU 2.0 */ UNORM_YES, /** * The input string may or may not be in the normalization form. * This value is only returned for composition forms like NFC and FCC, * when a backward-combining character is found for which the surrounding text * would have to be analyzed further. * @stable ICU 2.0 */ UNORM_MAYBE } UNormalizationCheckResult; /** * Opaque C service object type for the new normalization API. * @stable ICU 4.4 */ struct UNormalizer2; typedef struct UNormalizer2 UNormalizer2; /**< C typedef for struct UNormalizer2. @stable ICU 4.4 */ #if !UCONFIG_NO_NORMALIZATION /** * Returns a UNormalizer2 instance for Unicode NFC normalization. * Same as unorm2_getInstance(NULL, "nfc", UNORM2_COMPOSE, pErrorCode). * Returns an unmodifiable singleton instance. Do not delete it. * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested Normalizer2, if successful * @stable ICU 49 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getNFCInstance(UErrorCode *pErrorCode); /** * Returns a UNormalizer2 instance for Unicode NFD normalization. * Same as unorm2_getInstance(NULL, "nfc", UNORM2_DECOMPOSE, pErrorCode). * Returns an unmodifiable singleton instance. Do not delete it. * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested Normalizer2, if successful * @stable ICU 49 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getNFDInstance(UErrorCode *pErrorCode); /** * Returns a UNormalizer2 instance for Unicode NFKC normalization. * Same as unorm2_getInstance(NULL, "nfkc", UNORM2_COMPOSE, pErrorCode). * Returns an unmodifiable singleton instance. Do not delete it. * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested Normalizer2, if successful * @stable ICU 49 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getNFKCInstance(UErrorCode *pErrorCode); /** * Returns a UNormalizer2 instance for Unicode NFKD normalization. * Same as unorm2_getInstance(NULL, "nfkc", UNORM2_DECOMPOSE, pErrorCode). * Returns an unmodifiable singleton instance. Do not delete it. * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested Normalizer2, if successful * @stable ICU 49 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getNFKDInstance(UErrorCode *pErrorCode); /** * Returns a UNormalizer2 instance for Unicode NFKC_Casefold normalization. * Same as unorm2_getInstance(NULL, "nfkc_cf", UNORM2_COMPOSE, pErrorCode). * Returns an unmodifiable singleton instance. Do not delete it. * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested Normalizer2, if successful * @stable ICU 49 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getNFKCCasefoldInstance(UErrorCode *pErrorCode); /** * Returns a UNormalizer2 instance which uses the specified data file * (packageName/name similar to ucnv_openPackage() and ures_open()/ResourceBundle) * and which composes or decomposes text according to the specified mode. * Returns an unmodifiable singleton instance. Do not delete it. * * Use packageName=NULL for data files that are part of ICU's own data. * Use name="nfc" and UNORM2_COMPOSE/UNORM2_DECOMPOSE for Unicode standard NFC/NFD. * Use name="nfkc" and UNORM2_COMPOSE/UNORM2_DECOMPOSE for Unicode standard NFKC/NFKD. * Use name="nfkc_cf" and UNORM2_COMPOSE for Unicode standard NFKC_CF=NFKC_Casefold. * * @param packageName NULL for ICU built-in data, otherwise application data package name * @param name "nfc" or "nfkc" or "nfkc_cf" or name of custom data file * @param mode normalization mode (compose or decompose etc.) * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested UNormalizer2, if successful * @stable ICU 4.4 */ U_CAPI const UNormalizer2 * U_EXPORT2 unorm2_getInstance(const char *packageName, const char *name, UNormalization2Mode mode, UErrorCode *pErrorCode); /** * Constructs a filtered normalizer wrapping any UNormalizer2 instance * and a filter set. * Both are aliased and must not be modified or deleted while this object * is used. * The filter set should be frozen; otherwise the performance will suffer greatly. * @param norm2 wrapped UNormalizer2 instance * @param filterSet USet which determines the characters to be normalized * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the requested UNormalizer2, if successful * @stable ICU 4.4 */ U_CAPI UNormalizer2 * U_EXPORT2 unorm2_openFiltered(const UNormalizer2 *norm2, const USet *filterSet, UErrorCode *pErrorCode); /** * Closes a UNormalizer2 instance from unorm2_openFiltered(). * Do not close instances from unorm2_getInstance()! * @param norm2 UNormalizer2 instance to be closed * @stable ICU 4.4 */ U_CAPI void U_EXPORT2 unorm2_close(UNormalizer2 *norm2); #if U_SHOW_CPLUSPLUS_API U_NAMESPACE_BEGIN /** * \class LocalUNormalizer2Pointer * "Smart pointer" class, closes a UNormalizer2 via unorm2_close(). * For most methods see the LocalPointerBase base class. * * @see LocalPointerBase * @see LocalPointer * @stable ICU 4.4 */ U_DEFINE_LOCAL_OPEN_POINTER(LocalUNormalizer2Pointer, UNormalizer2, unorm2_close); U_NAMESPACE_END #endif /** * Writes the normalized form of the source string to the destination string * (replacing its contents) and returns the length of the destination string. * The source and destination strings must be different buffers. * @param norm2 UNormalizer2 instance * @param src source string * @param length length of the source string, or -1 if NUL-terminated * @param dest destination string; its contents is replaced with normalized src * @param capacity number of UChars that can be written to dest * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.4 */ U_CAPI int32_t U_EXPORT2 unorm2_normalize(const UNormalizer2 *norm2, const UChar *src, int32_t length, UChar *dest, int32_t capacity, UErrorCode *pErrorCode); /** * Appends the normalized form of the second string to the first string * (merging them at the boundary) and returns the length of the first string. * The result is normalized if the first string was normalized. * The first and second strings must be different buffers. * @param norm2 UNormalizer2 instance * @param first string, should be normalized * @param firstLength length of the first string, or -1 if NUL-terminated * @param firstCapacity number of UChars that can be written to first * @param second string, will be normalized * @param secondLength length of the source string, or -1 if NUL-terminated * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return first * @stable ICU 4.4 */ U_CAPI int32_t U_EXPORT2 unorm2_normalizeSecondAndAppend(const UNormalizer2 *norm2, UChar *first, int32_t firstLength, int32_t firstCapacity, const UChar *second, int32_t secondLength, UErrorCode *pErrorCode); /** * Appends the second string to the first string * (merging them at the boundary) and returns the length of the first string. * The result is normalized if both the strings were normalized. * The first and second strings must be different buffers. * @param norm2 UNormalizer2 instance * @param first string, should be normalized * @param firstLength length of the first string, or -1 if NUL-terminated * @param firstCapacity number of UChars that can be written to first * @param second string, should be normalized * @param secondLength length of the source string, or -1 if NUL-terminated * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return first * @stable ICU 4.4 */ U_CAPI int32_t U_EXPORT2 unorm2_append(const UNormalizer2 *norm2, UChar *first, int32_t firstLength, int32_t firstCapacity, const UChar *second, int32_t secondLength, UErrorCode *pErrorCode); /** * Gets the decomposition mapping of c. * Roughly equivalent to normalizing the String form of c * on a UNORM2_DECOMPOSE UNormalizer2 instance, but much faster, and except that this function * returns a negative value and does not write a string * if c does not have a decomposition mapping in this instance's data. * This function is independent of the mode of the UNormalizer2. * @param norm2 UNormalizer2 instance * @param c code point * @param decomposition String buffer which will be set to c's * decomposition mapping, if there is one. * @param capacity number of UChars that can be written to decomposition * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the non-negative length of c's decomposition, if there is one; otherwise a negative value * @stable ICU 4.6 */ U_CAPI int32_t U_EXPORT2 unorm2_getDecomposition(const UNormalizer2 *norm2, UChar32 c, UChar *decomposition, int32_t capacity, UErrorCode *pErrorCode); /** * Gets the raw decomposition mapping of c. * * This is similar to the unorm2_getDecomposition() function but returns the * raw decomposition mapping as specified in UnicodeData.txt or * (for custom data) in the mapping files processed by the gennorm2 tool. * By contrast, unorm2_getDecomposition() returns the processed, * recursively-decomposed version of this mapping. * * When used on a standard NFKC Normalizer2 instance, * unorm2_getRawDecomposition() returns the Unicode Decomposition_Mapping (dm) property. * * When used on a standard NFC Normalizer2 instance, * it returns the Decomposition_Mapping only if the Decomposition_Type (dt) is Canonical (Can); * in this case, the result contains either one or two code points (=1..4 UChars). * * This function is independent of the mode of the UNormalizer2. * @param norm2 UNormalizer2 instance * @param c code point * @param decomposition String buffer which will be set to c's * raw decomposition mapping, if there is one. * @param capacity number of UChars that can be written to decomposition * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the non-negative length of c's raw decomposition, if there is one; otherwise a negative value * @stable ICU 49 */ U_CAPI int32_t U_EXPORT2 unorm2_getRawDecomposition(const UNormalizer2 *norm2, UChar32 c, UChar *decomposition, int32_t capacity, UErrorCode *pErrorCode); /** * Performs pairwise composition of a & b and returns the composite if there is one. * * Returns a composite code point c only if c has a two-way mapping to a+b. * In standard Unicode normalization, this means that * c has a canonical decomposition to a+b * and c does not have the Full_Composition_Exclusion property. * * This function is independent of the mode of the UNormalizer2. * @param norm2 UNormalizer2 instance * @param a A (normalization starter) code point. * @param b Another code point. * @return The non-negative composite code point if there is one; otherwise a negative value. * @stable ICU 49 */ U_CAPI UChar32 U_EXPORT2 unorm2_composePair(const UNormalizer2 *norm2, UChar32 a, UChar32 b); /** * Gets the combining class of c. * The default implementation returns 0 * but all standard implementations return the Unicode Canonical_Combining_Class value. * @param norm2 UNormalizer2 instance * @param c code point * @return c's combining class * @stable ICU 49 */ U_CAPI uint8_t U_EXPORT2 unorm2_getCombiningClass(const UNormalizer2 *norm2, UChar32 c); /** * Tests if the string is normalized. * Internally, in cases where the quickCheck() method would return "maybe" * (which is only possible for the two COMPOSE modes) this method * resolves to "yes" or "no" to provide a definitive result, * at the cost of doing more work in those cases. * @param norm2 UNormalizer2 instance * @param s input string * @param length length of the string, or -1 if NUL-terminated * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return true if s is normalized * @stable ICU 4.4 */ U_CAPI UBool U_EXPORT2 unorm2_isNormalized(const UNormalizer2 *norm2, const UChar *s, int32_t length, UErrorCode *pErrorCode); /** * Tests if the string is normalized. * For the two COMPOSE modes, the result could be "maybe" in cases that * would take a little more work to resolve definitively. * Use spanQuickCheckYes() and normalizeSecondAndAppend() for a faster * combination of quick check + normalization, to avoid * re-checking the "yes" prefix. * @param norm2 UNormalizer2 instance * @param s input string * @param length length of the string, or -1 if NUL-terminated * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return UNormalizationCheckResult * @stable ICU 4.4 */ U_CAPI UNormalizationCheckResult U_EXPORT2 unorm2_quickCheck(const UNormalizer2 *norm2, const UChar *s, int32_t length, UErrorCode *pErrorCode); /** * Returns the end of the normalized substring of the input string. * In other words, with <code>end=spanQuickCheckYes(s, ec);</code> * the substring <code>UnicodeString(s, 0, end)</code> * will pass the quick check with a "yes" result. * * The returned end index is usually one or more characters before the * "no" or "maybe" character: The end index is at a normalization boundary. * (See the class documentation for more about normalization boundaries.) * * When the goal is a normalized string and most input strings are expected * to be normalized already, then call this method, * and if it returns a prefix shorter than the input string, * copy that prefix and use normalizeSecondAndAppend() for the remainder. * @param norm2 UNormalizer2 instance * @param s input string * @param length length of the string, or -1 if NUL-terminated * @param pErrorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return "yes" span end index * @stable ICU 4.4 */ U_CAPI int32_t U_EXPORT2 unorm2_spanQuickCheckYes(const UNormalizer2 *norm2, const UChar *s, int32_t length, UErrorCode *pErrorCode); /** * Tests if the character always has a normalization boundary before it, * regardless of context. * For details see the Normalizer2 base class documentation. * @param norm2 UNormalizer2 instance * @param c character to test * @return true if c has a normalization boundary before it * @stable ICU 4.4 */ U_CAPI UBool U_EXPORT2 unorm2_hasBoundaryBefore(const UNormalizer2 *norm2, UChar32 c); /** * Tests if the character always has a normalization boundary after it, * regardless of context. * For details see the Normalizer2 base class documentation. * @param norm2 UNormalizer2 instance * @param c character to test * @return true if c has a normalization boundary after it * @stable ICU 4.4 */ U_CAPI UBool U_EXPORT2 unorm2_hasBoundaryAfter(const UNormalizer2 *norm2, UChar32 c); /** * Tests if the character is normalization-inert. * For details see the Normalizer2 base class documentation. * @param norm2 UNormalizer2 instance * @param c character to test * @return true if c is normalization-inert * @stable ICU 4.4 */ U_CAPI UBool U_EXPORT2 unorm2_isInert(const UNormalizer2 *norm2, UChar32 c); /** * Compares two strings for canonical equivalence. * Further options include case-insensitive comparison and * code point order (as opposed to code unit order). * * Canonical equivalence between two strings is defined as their normalized * forms (NFD or NFC) being identical. * This function compares strings incrementally instead of normalizing * (and optionally case-folding) both strings entirely, * improving performance significantly. * * Bulk normalization is only necessary if the strings do not fulfill the FCD * conditions. Only in this case, and only if the strings are relatively long, * is memory allocated temporarily. * For FCD strings and short non-FCD strings there is no memory allocation. * * Semantically, this is equivalent to * strcmp[CodePointOrder](NFD(foldCase(NFD(s1))), NFD(foldCase(NFD(s2)))) * where code point order and foldCase are all optional. * * UAX 21 2.5 Caseless Matching specifies that for a canonical caseless match * the case folding must be performed first, then the normalization. * * @param s1 First source string. * @param length1 Length of first source string, or -1 if NUL-terminated. * * @param s2 Second source string. * @param length2 Length of second source string, or -1 if NUL-terminated. * * @param options A bit set of options: * - U_FOLD_CASE_DEFAULT or 0 is used for default options: * Case-sensitive comparison in code unit order, and the input strings * are quick-checked for FCD. * * - UNORM_INPUT_IS_FCD * Set if the caller knows that both s1 and s2 fulfill the FCD conditions. * If not set, the function will quickCheck for FCD * and normalize if necessary. * * - U_COMPARE_CODE_POINT_ORDER * Set to choose code point order instead of code unit order * (see u_strCompare for details). * * - U_COMPARE_IGNORE_CASE * Set to compare strings case-insensitively using case folding, * instead of case-sensitively. * If set, then the following case folding options are used. * * - Options as used with case-insensitive comparisons, currently: * * - U_FOLD_CASE_EXCLUDE_SPECIAL_I * (see u_strCaseCompare for details) * * - regular normalization options shifted left by UNORM_COMPARE_NORM_OPTIONS_SHIFT * * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return <0 or 0 or >0 as usual for string comparisons * * @see unorm_normalize * @see UNORM_FCD * @see u_strCompare * @see u_strCaseCompare * * @stable ICU 2.2 */ U_CAPI int32_t U_EXPORT2 unorm_compare(const UChar *s1, int32_t length1, const UChar *s2, int32_t length2, uint32_t options, UErrorCode *pErrorCode); #endif /* !UCONFIG_NO_NORMALIZATION */ #endif /* __UNORM2_H__ */