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10/28/2024 06:50:42 AM
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alphaindex.h
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appendable.h
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basictz.h
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brkiter.h
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bytestream.h
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bytestrie.h
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bytestriebuilder.h
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calendar.h
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caniter.h
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casemap.h
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char16ptr.h
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chariter.h
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choicfmt.h
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coleitr.h
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coll.h
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compactdecimalformat.h
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curramt.h
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currpinf.h
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currunit.h
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datefmt.h
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dbbi.h
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dcfmtsym.h
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decimfmt.h
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docmain.h
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dtfmtsym.h
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dtintrv.h
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dtitvfmt.h
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dtitvinf.h
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dtptngen.h
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dtrule.h
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edits.h
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enumset.h
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errorcode.h
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fieldpos.h
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filteredbrk.h
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fmtable.h
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format.h
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fpositer.h
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gender.h
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gregocal.h
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icudataver.h
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icuplug.h
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idna.h
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listformatter.h
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localpointer.h
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locdspnm.h
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locid.h
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measfmt.h
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measunit.h
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measure.h
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messagepattern.h
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msgfmt.h
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normalizer2.h
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normlzr.h
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nounit.h
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numberformatter.h
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numfmt.h
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numsys.h
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parseerr.h
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parsepos.h
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platform.h
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plurfmt.h
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plurrule.h
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ptypes.h
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putil.h
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rbbi.h
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rbnf.h
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rbtz.h
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regex.h
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region.h
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reldatefmt.h
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rep.h
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resbund.h
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schriter.h
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scientificnumberformatter.h
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search.h
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selfmt.h
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simpleformatter.h
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simpletz.h
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smpdtfmt.h
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sortkey.h
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std_string.h
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strenum.h
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stringoptions.h
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stringpiece.h
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stringtriebuilder.h
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stsearch.h
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symtable.h
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tblcoll.h
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timezone.h
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tmunit.h
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tmutamt.h
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tmutfmt.h
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translit.h
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tzfmt.h
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tznames.h
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tzrule.h
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tztrans.h
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ubidi.h
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ubiditransform.h
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ubrk.h
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ucal.h
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ucasemap.h
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ucat.h
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uchar.h
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ucharstrie.h
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ucharstriebuilder.h
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uchriter.h
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uclean.h
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ucnv.h
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ucnv_cb.h
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ucnv_err.h
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ucnvsel.h
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ucol.h
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ucoleitr.h
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uconfig.h
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ucsdet.h
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ucurr.h
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udat.h
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udata.h
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udateintervalformat.h
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udatpg.h
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udisplaycontext.h
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uenum.h
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ufieldpositer.h
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uformattable.h
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ugender.h
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uidna.h
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uiter.h
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uldnames.h
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ulistformatter.h
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uloc.h
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ulocdata.h
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umachine.h
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umisc.h
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umsg.h
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unifilt.h
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unifunct.h
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unimatch.h
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unirepl.h
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uniset.h
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unistr.h
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unorm.h
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unorm2.h
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unum.h
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unumsys.h
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uobject.h
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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
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urep.h
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ures.h
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uscript.h
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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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usprep.h
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ustdio.h
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ustream.h
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ustring.h
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ustringtrie.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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utmscale.h
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utrace.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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Editing: unorm.h
Close
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************* * Copyright (c) 1996-2016, International Business Machines Corporation * and others. All Rights Reserved. ******************************************************************************* * File unorm.h * * Created by: Vladimir Weinstein 12052000 * * Modification history : * * Date Name Description * 02/01/01 synwee Added normalization quickcheck enum and method. */ #ifndef UNORM_H #define UNORM_H #include "unicode/utypes.h" #if !UCONFIG_NO_NORMALIZATION #include "unicode/uiter.h" #include "unicode/unorm2.h" /** * \file * \brief C API: Unicode Normalization * * Old Unicode normalization API. * * This API has been replaced by the unorm2.h API and is only available * for backward compatibility. The functions here simply delegate to the * unorm2.h functions, for example unorm2_getInstance() and unorm2_normalize(). * There is one exception: The new API does not provide a replacement for unorm_compare(). * Its declaration has been moved to unorm2.h. * * <code>unorm_normalize</code> transforms Unicode text into an equivalent composed or * decomposed form, allowing for easier sorting and searching of text. * <code>unorm_normalize</code> supports the standard normalization forms described in * <a href="http://www.unicode.org/unicode/reports/tr15/" target="unicode"> * Unicode Standard Annex #15: Unicode Normalization Forms</a>. * * Characters with accents or other adornments can be encoded in * several different ways in Unicode. For example, take the character A-acute. * In Unicode, this can be encoded as a single character (the * "composed" form): * * \code * 00C1 LATIN CAPITAL LETTER A WITH ACUTE * \endcode * * or as two separate characters (the "decomposed" form): * * \code * 0041 LATIN CAPITAL LETTER A * 0301 COMBINING ACUTE ACCENT * \endcode * * To a user of your program, however, both of these sequences should be * treated as the same "user-level" character "A with acute accent". When you are searching or * comparing text, you must ensure that these two sequences are treated * equivalently. In addition, you must handle characters with more than one * accent. Sometimes the order of a character's combining accents is * significant, while in other cases accent sequences in different orders are * really equivalent. * * Similarly, the string "ffi" can be encoded as three separate letters: * * \code * 0066 LATIN SMALL LETTER F * 0066 LATIN SMALL LETTER F * 0069 LATIN SMALL LETTER I * \endcode * * or as the single character * * \code * FB03 LATIN SMALL LIGATURE FFI * \endcode * * The ffi ligature is not a distinct semantic character, and strictly speaking * it shouldn't be in Unicode at all, but it was included for compatibility * with existing character sets that already provided it. The Unicode standard * identifies such characters by giving them "compatibility" decompositions * into the corresponding semantic characters. When sorting and searching, you * will often want to use these mappings. * * <code>unorm_normalize</code> helps solve these problems by transforming text into the * canonical composed and decomposed forms as shown in the first example above. * In addition, you can have it perform compatibility decompositions so that * you can treat compatibility characters the same as their equivalents. * Finally, <code>unorm_normalize</code> rearranges accents into the proper canonical * order, so that you do not have to worry about accent rearrangement on your * own. * * Form FCD, "Fast C or D", is also designed for collation. * It allows to work on strings that are not necessarily normalized * with an algorithm (like in collation) that works under "canonical closure", i.e., it treats precomposed * characters and their decomposed equivalents the same. * * It is not a normalization form because it does not provide for uniqueness of representation. Multiple strings * may be canonically equivalent (their NFDs are identical) and may all conform to FCD without being identical * themselves. * * The form is defined such that the "raw decomposition", the recursive canonical decomposition of each character, * results in a string that is canonically ordered. This means that precomposed characters are allowed for as long * as their decompositions do not need canonical reordering. * * Its advantage for a process like collation is that all NFD and most NFC texts - and many unnormalized texts - * already conform to FCD and do not need to be normalized (NFD) for such a process. The FCD quick check will * return UNORM_YES for most strings in practice. * * unorm_normalize(UNORM_FCD) may be implemented with UNORM_NFD. * * For more details on FCD see the collation design document: * http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collation/ICU_collation_design.htm * * ICU collation performs either NFD or FCD normalization automatically if normalization * is turned on for the collator object. * Beyond collation and string search, normalized strings may be useful for string equivalence comparisons, * transliteration/transcription, unique representations, etc. * * The W3C generally recommends to exchange texts in NFC. * Note also that most legacy character encodings use only precomposed forms and often do not * encode any combining marks by themselves. For conversion to such character encodings the * Unicode text needs to be normalized to NFC. * For more usage examples, see the Unicode Standard Annex. */ // Do not conditionalize the following enum with #ifndef U_HIDE_DEPRECATED_API, // it is needed for layout of Normalizer object. /** * Constants for normalization modes. * @deprecated ICU 56 Use unorm2.h instead. */ typedef enum { /** No decomposition/composition. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_NONE = 1, /** Canonical decomposition. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_NFD = 2, /** Compatibility decomposition. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_NFKD = 3, /** Canonical decomposition followed by canonical composition. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_NFC = 4, /** Default normalization. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_DEFAULT = UNORM_NFC, /** Compatibility decomposition followed by canonical composition. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_NFKC =5, /** "Fast C or D" form. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_FCD = 6, /** One more than the highest normalization mode constant. @deprecated ICU 56 Use unorm2.h instead. */ UNORM_MODE_COUNT } UNormalizationMode; #ifndef U_HIDE_DEPRECATED_API /** * Constants for options flags for normalization. * Use 0 for default options, * including normalization according to the Unicode version * that is currently supported by ICU (see u_getUnicodeVersion). * @deprecated ICU 56 Use unorm2.h instead. */ enum { /** * Options bit set value to select Unicode 3.2 normalization * (except NormalizationCorrections). * At most one Unicode version can be selected at a time. * @deprecated ICU 56 Use unorm2.h instead. */ UNORM_UNICODE_3_2=0x20 }; /** * Lowest-order bit number of unorm_compare() options bits corresponding to * normalization options bits. * * The options parameter for unorm_compare() uses most bits for * itself and for various comparison and folding flags. * The most significant bits, however, are shifted down and passed on * to the normalization implementation. * (That is, from unorm_compare(..., options, ...), * options>>UNORM_COMPARE_NORM_OPTIONS_SHIFT will be passed on to the * internal normalization functions.) * * @see unorm_compare * @deprecated ICU 56 Use unorm2.h instead. */ #define UNORM_COMPARE_NORM_OPTIONS_SHIFT 20 /** * Normalize a string. * The string will be normalized according the specified normalization mode * and options. * The source and result buffers must not be the same, nor overlap. * * @param source The string to normalize. * @param sourceLength The length of source, or -1 if NUL-terminated. * @param mode The normalization mode; one of UNORM_NONE, * UNORM_NFD, UNORM_NFC, UNORM_NFKC, UNORM_NFKD, UNORM_DEFAULT. * @param options The normalization options, ORed together (0 for no options). * @param result A pointer to a buffer to receive the result string. * The result string is NUL-terminated if possible. * @param resultLength The maximum size of result. * @param status A pointer to a UErrorCode to receive any errors. * @return The total buffer size needed; if greater than resultLength, * the output was truncated, and the error code is set to U_BUFFER_OVERFLOW_ERROR. * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED int32_t U_EXPORT2 unorm_normalize(const UChar *source, int32_t sourceLength, UNormalizationMode mode, int32_t options, UChar *result, int32_t resultLength, UErrorCode *status); /** * Performing quick check on a string, to quickly determine if the string is * in a particular normalization format. * Three types of result can be returned UNORM_YES, UNORM_NO or * UNORM_MAYBE. Result UNORM_YES indicates that the argument * string is in the desired normalized format, UNORM_NO determines that * argument string is not in the desired normalized format. A * UNORM_MAYBE result indicates that a more thorough check is required, * the user may have to put the string in its normalized form and compare the * results. * * @param source string for determining if it is in a normalized format * @param sourcelength length of source to test, or -1 if NUL-terminated * @param mode which normalization form to test for * @param status a pointer to a UErrorCode to receive any errors * @return UNORM_YES, UNORM_NO or UNORM_MAYBE * * @see unorm_isNormalized * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED UNormalizationCheckResult U_EXPORT2 unorm_quickCheck(const UChar *source, int32_t sourcelength, UNormalizationMode mode, UErrorCode *status); /** * Performing quick check on a string; same as unorm_quickCheck but * takes an extra options parameter like most normalization functions. * * @param src String that is to be tested if it is in a normalization format. * @param srcLength Length of source to test, or -1 if NUL-terminated. * @param mode Which normalization form to test for. * @param options The normalization options, ORed together (0 for no options). * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return UNORM_YES, UNORM_NO or UNORM_MAYBE * * @see unorm_quickCheck * @see unorm_isNormalized * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED UNormalizationCheckResult U_EXPORT2 unorm_quickCheckWithOptions(const UChar *src, int32_t srcLength, UNormalizationMode mode, int32_t options, UErrorCode *pErrorCode); /** * Test if a string is in a given normalization form. * This is semantically equivalent to source.equals(normalize(source, mode)) . * * Unlike unorm_quickCheck(), this function returns a definitive result, * never a "maybe". * For NFD, NFKD, and FCD, both functions work exactly the same. * For NFC and NFKC where quickCheck may return "maybe", this function will * perform further tests to arrive at a TRUE/FALSE result. * * @param src String that is to be tested if it is in a normalization format. * @param srcLength Length of source to test, or -1 if NUL-terminated. * @param mode Which normalization form to test for. * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return Boolean value indicating whether the source string is in the * "mode" normalization form. * * @see unorm_quickCheck * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED UBool U_EXPORT2 unorm_isNormalized(const UChar *src, int32_t srcLength, UNormalizationMode mode, UErrorCode *pErrorCode); /** * Test if a string is in a given normalization form; same as unorm_isNormalized but * takes an extra options parameter like most normalization functions. * * @param src String that is to be tested if it is in a normalization format. * @param srcLength Length of source to test, or -1 if NUL-terminated. * @param mode Which normalization form to test for. * @param options The normalization options, ORed together (0 for no options). * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return Boolean value indicating whether the source string is in the * "mode/options" normalization form. * * @see unorm_quickCheck * @see unorm_isNormalized * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED UBool U_EXPORT2 unorm_isNormalizedWithOptions(const UChar *src, int32_t srcLength, UNormalizationMode mode, int32_t options, UErrorCode *pErrorCode); /** * Iterative normalization forward. * This function (together with unorm_previous) is somewhat * similar to the C++ Normalizer class (see its non-static functions). * * Iterative normalization is useful when only a small portion of a longer * string/text needs to be processed. * * For example, the likelihood may be high that processing the first 10% of some * text will be sufficient to find certain data. * Another example: When one wants to concatenate two normalized strings and get a * normalized result, it is much more efficient to normalize just a small part of * the result around the concatenation place instead of re-normalizing everything. * * The input text is an instance of the C character iteration API UCharIterator. * It may wrap around a simple string, a CharacterIterator, a Replaceable, or any * other kind of text object. * * If a buffer overflow occurs, then the caller needs to reset the iterator to the * old index and call the function again with a larger buffer - if the caller cares * for the actual output. * Regardless of the output buffer, the iterator will always be moved to the next * normalization boundary. * * This function (like unorm_previous) serves two purposes: * * 1) To find the next boundary so that the normalization of the part of the text * from the current position to that boundary does not affect and is not affected * by the part of the text beyond that boundary. * * 2) To normalize the text up to the boundary. * * The second step is optional, per the doNormalize parameter. * It is omitted for operations like string concatenation, where the two adjacent * string ends need to be normalized together. * In such a case, the output buffer will just contain a copy of the text up to the * boundary. * * pNeededToNormalize is an output-only parameter. Its output value is only defined * if normalization was requested (doNormalize) and successful (especially, no * buffer overflow). * It is useful for operations like a normalizing transliterator, where one would * not want to replace a piece of text if it is not modified. * * If doNormalize==TRUE and pNeededToNormalize!=NULL then *pNeeded... is set TRUE * if the normalization was necessary. * * If doNormalize==FALSE then *pNeededToNormalize will be set to FALSE. * * If the buffer overflows, then *pNeededToNormalize will be undefined; * essentially, whenever U_FAILURE is true (like in buffer overflows), this result * will be undefined. * * @param src The input text in the form of a C character iterator. * @param dest The output buffer; can be NULL if destCapacity==0 for pure preflighting. * @param destCapacity The number of UChars that fit into dest. * @param mode The normalization mode. * @param options The normalization options, ORed together (0 for no options). * @param doNormalize Indicates if the source text up to the next boundary * is to be normalized (TRUE) or just copied (FALSE). * @param pNeededToNormalize Output flag indicating if the normalization resulted in * different text from the input. * Not defined if an error occurs including buffer overflow. * Always FALSE if !doNormalize. * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return Length of output (number of UChars) when successful or buffer overflow. * * @see unorm_previous * @see unorm_normalize * * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED int32_t U_EXPORT2 unorm_next(UCharIterator *src, UChar *dest, int32_t destCapacity, UNormalizationMode mode, int32_t options, UBool doNormalize, UBool *pNeededToNormalize, UErrorCode *pErrorCode); /** * Iterative normalization backward. * This function (together with unorm_next) is somewhat * similar to the C++ Normalizer class (see its non-static functions). * For all details see unorm_next. * * @param src The input text in the form of a C character iterator. * @param dest The output buffer; can be NULL if destCapacity==0 for pure preflighting. * @param destCapacity The number of UChars that fit into dest. * @param mode The normalization mode. * @param options The normalization options, ORed together (0 for no options). * @param doNormalize Indicates if the source text up to the next boundary * is to be normalized (TRUE) or just copied (FALSE). * @param pNeededToNormalize Output flag indicating if the normalization resulted in * different text from the input. * Not defined if an error occurs including buffer overflow. * Always FALSE if !doNormalize. * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return Length of output (number of UChars) when successful or buffer overflow. * * @see unorm_next * @see unorm_normalize * * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED int32_t U_EXPORT2 unorm_previous(UCharIterator *src, UChar *dest, int32_t destCapacity, UNormalizationMode mode, int32_t options, UBool doNormalize, UBool *pNeededToNormalize, UErrorCode *pErrorCode); /** * Concatenate normalized strings, making sure that the result is normalized as well. * * If both the left and the right strings are in * the normalization form according to "mode/options", * then the result will be * * \code * dest=normalize(left+right, mode, options) * \endcode * * With the input strings already being normalized, * this function will use unorm_next() and unorm_previous() * to find the adjacent end pieces of the input strings. * Only the concatenation of these end pieces will be normalized and * then concatenated with the remaining parts of the input strings. * * It is allowed to have dest==left to avoid copying the entire left string. * * @param left Left source string, may be same as dest. * @param leftLength Length of left source string, or -1 if NUL-terminated. * @param right Right source string. Must not be the same as dest, nor overlap. * @param rightLength Length of right source string, or -1 if NUL-terminated. * @param dest The output buffer; can be NULL if destCapacity==0 for pure preflighting. * @param destCapacity The number of UChars that fit into dest. * @param mode The normalization mode. * @param options The normalization options, ORed together (0 for no options). * @param pErrorCode ICU error code in/out parameter. * Must fulfill U_SUCCESS before the function call. * @return Length of output (number of UChars) when successful or buffer overflow. * * @see unorm_normalize * @see unorm_next * @see unorm_previous * * @deprecated ICU 56 Use unorm2.h instead. */ U_DEPRECATED int32_t U_EXPORT2 unorm_concatenate(const UChar *left, int32_t leftLength, const UChar *right, int32_t rightLength, UChar *dest, int32_t destCapacity, UNormalizationMode mode, int32_t options, UErrorCode *pErrorCode); #endif /* U_HIDE_DEPRECATED_API */ #endif /* #if !UCONFIG_NO_NORMALIZATION */ #endif