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?? alphaindex.h(26.54 KB)
?? appendable.h(8.54 KB)
?? basictz.h(9.99 KB)
?? brkiter.h(27.84 KB)
?? bytestream.h(10.77 KB)
?? bytestrie.h(20.83 KB)
?? bytestriebuilder.h(7.48 KB)
?? calendar.h(107.54 KB)
?? caniter.h(7.53 KB)
?? casemap.h(25.42 KB)
?? char16ptr.h(10.79 KB)
?? chariter.h(23.79 KB)
?? choicfmt.h(23.99 KB)
?? coleitr.h(13.78 KB)
?? coll.h(59.6 KB)
?? compactdecimalformat.h(6.88 KB)
?? curramt.h(3.67 KB)
?? currpinf.h(7.3 KB)
?? currunit.h(4.02 KB)
?? datefmt.h(40.7 KB)
?? dbbi.h(1.19 KB)
?? dcfmtsym.h(20.96 KB)
?? decimfmt.h(87.46 KB)
?? displayoptions.h(7.08 KB)
?? docmain.h(7.6 KB)
?? dtfmtsym.h(38.22 KB)
?? dtintrv.h(3.84 KB)
?? dtitvfmt.h(48.87 KB)
?? dtitvinf.h(18.63 KB)
?? dtptngen.h(28.05 KB)
?? dtrule.h(8.66 KB)
?? edits.h(20.74 KB)
?? enumset.h(2.08 KB)
?? errorcode.h(4.84 KB)
?? fieldpos.h(8.69 KB)
?? filteredbrk.h(5.37 KB)
?? fmtable.h(24.37 KB)
?? format.h(12.51 KB)
?? formattednumber.h(6.28 KB)
?? formattedvalue.h(9.75 KB)
?? fpositer.h(3.03 KB)
?? gender.h(3.35 KB)
?? gregocal.h(30.32 KB)
?? icudataver.h(1.02 KB)
?? icuplug.h(12.1 KB)
?? idna.h(12.93 KB)
?? listformatter.h(8.59 KB)
?? localebuilder.h(11.08 KB)
?? localematcher.h(26.86 KB)
?? localpointer.h(19.55 KB)
?? locdspnm.h(7.12 KB)
?? locid.h(48.62 KB)
?? measfmt.h(11.41 KB)
?? measunit.h(111.44 KB)
?? measure.h(4.63 KB)
?? messageformat2.h(21.05 KB)
?? messageformat2_arguments.h(4.49 KB)
?? messageformat2_data_model.h(101.89 KB)
?? messageformat2_data_model_names.h(784 B)
?? messageformat2_formattable.h(38.36 KB)
?? messageformat2_function_registry.h(18.07 KB)
?? messagepattern.h(33.79 KB)
?? msgfmt.h(44.2 KB)
?? normalizer2.h(34.68 KB)
?? normlzr.h(30.79 KB)
?? nounit.h(2.24 KB)
?? numberformatter.h(90.69 KB)
?? numberrangeformatter.h(26 KB)
?? numfmt.h(50.16 KB)
?? numsys.h(7.22 KB)
?? parseerr.h(3.08 KB)
?? parsepos.h(5.56 KB)
?? platform.h(27.18 KB)
?? plurfmt.h(25.07 KB)
?? plurrule.h(20.63 KB)
?? ptypes.h(2.16 KB)
?? putil.h(6.32 KB)
?? rbbi.h(32.04 KB)
?? rbnf.h(56.16 KB)
?? rbtz.h(15.75 KB)
?? regex.h(84.45 KB)
?? region.h(9.2 KB)
?? reldatefmt.h(22.48 KB)
?? rep.h(9.38 KB)
?? resbund.h(18.02 KB)
?? schriter.h(6.09 KB)
?? scientificnumberformatter.h(6.44 KB)
?? search.h(22.21 KB)
?? selfmt.h(14.35 KB)
?? simpleformatter.h(12.6 KB)
?? simplenumberformatter.h(8.87 KB)
?? simpletz.h(45.62 KB)
?? smpdtfmt.h(57.06 KB)
?? sortkey.h(11.13 KB)
?? std_string.h(1.05 KB)
?? strenum.h(9.96 KB)
?? stringoptions.h(5.79 KB)
?? stringpiece.h(10.28 KB)
?? stringtriebuilder.h(15.53 KB)
?? stsearch.h(21.43 KB)
?? symtable.h(4.28 KB)
?? tblcoll.h(36.96 KB)
?? timezone.h(45.59 KB)
?? tmunit.h(3.4 KB)
?? tmutamt.h(4.9 KB)
?? tmutfmt.h(7.42 KB)
?? translit.h(65.81 KB)
?? tzfmt.h(42.95 KB)
?? tznames.h(16.85 KB)
?? tzrule.h(34.81 KB)
?? tztrans.h(6.11 KB)
?? ubidi.h(89.61 KB)
?? ubiditransform.h(12.71 KB)
?? ubrk.h(24.43 KB)
?? ucal.h(63.96 KB)
?? ucasemap.h(15.27 KB)
?? ucat.h(5.35 KB)
?? uchar.h(151.74 KB)
?? ucharstrie.h(22.59 KB)
?? ucharstriebuilder.h(7.48 KB)
?? uchriter.h(13.24 KB)
?? uclean.h(11.21 KB)
?? ucnv.h(83.34 KB)
?? ucnv_cb.h(6.58 KB)
?? ucnv_err.h(20.98 KB)
?? ucnvsel.h(6.24 KB)
?? ucol.h(67.28 KB)
?? ucoleitr.h(9.82 KB)
?? uconfig.h(12.56 KB)
?? ucpmap.h(5.54 KB)
?? ucptrie.h(22.51 KB)
?? ucsdet.h(14.69 KB)
?? ucurr.h(16.72 KB)
?? udat.h(62.36 KB)
?? udata.h(15.63 KB)
?? udateintervalformat.h(11.93 KB)
?? udatpg.h(30.13 KB)
?? udisplaycontext.h(5.94 KB)
?? udisplayoptions.h(8.86 KB)
?? uenum.h(7.79 KB)
?? ufieldpositer.h(4.41 KB)
?? uformattable.h(10.97 KB)
?? uformattednumber.h(8.09 KB)
?? uformattedvalue.h(12.25 KB)
?? ugender.h(2.06 KB)
?? uidna.h(34.12 KB)
?? uiter.h(22.75 KB)
?? uldnames.h(10.48 KB)
?? ulistformatter.h(10.78 KB)
?? uloc.h(55.38 KB)
?? ulocale.h(6.31 KB)
?? ulocbuilder.h(16.69 KB)
?? ulocdata.h(11.3 KB)
?? umachine.h(14.59 KB)
?? umisc.h(1.34 KB)
?? umsg.h(24.25 KB)
?? umutablecptrie.h(8.3 KB)
?? unifilt.h(4 KB)
?? unifunct.h(4.05 KB)
?? unimatch.h(6.1 KB)
?? unirepl.h(3.38 KB)
?? uniset.h(70.4 KB)
?? unistr.h(182.08 KB)
?? unorm.h(20.55 KB)
?? unorm2.h(25.66 KB)
?? unum.h(55.16 KB)
?? unumberformatter.h(19.68 KB)
?? unumberoptions.h(5.23 KB)
?? unumberrangeformatter.h(15.35 KB)
?? unumsys.h(7.26 KB)
?? uobject.h(10.66 KB)
?? upluralrules.h(8.79 KB)
?? uregex.h(71.99 KB)
?? uregion.h(9.81 KB)
?? ureldatefmt.h(16.98 KB)
?? urename.h(141.99 KB)
?? urep.h(5.38 KB)
?? ures.h(36.65 KB)
?? uscript.h(28.51 KB)
?? usearch.h(39.21 KB)
?? uset.h(63.08 KB)
?? usetiter.h(9.63 KB)
?? ushape.h(18 KB)
?? usimplenumberformatter.h(7.31 KB)
?? uspoof.h(80 KB)
?? usprep.h(8.19 KB)
?? ustdio.h(38.58 KB)
?? ustream.h(1.89 KB)
?? ustring.h(72.16 KB)
?? ustringtrie.h(3.15 KB)
?? utext.h(58.1 KB)
?? utf.h(7.87 KB)
?? utf16.h(23.35 KB)
?? utf32.h(763 B)
?? utf8.h(30.83 KB)
?? utf_old.h(45.8 KB)
?? utmscale.h(13.78 KB)
?? utrace.h(17.18 KB)
?? utrans.h(25.54 KB)
?? utypes.h(34.48 KB)
?? uvernum.h(6.33 KB)
?? uversion.h(8.21 KB)
?? vtzone.h(20.68 KB)

Editing: utf.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
*   Copyright (C) 1999-2011, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
*******************************************************************************
*   file name:  utf.h
*   encoding:   UTF-8
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 1999sep09
*   created by: Markus W. Scherer
*/

/**
 * \file
 * \brief C API: Code point macros
 *
 * This file defines macros for checking whether a code point is
 * a surrogate or a non-character etc.
 *
 * If U_NO_DEFAULT_INCLUDE_UTF_HEADERS is 0 then utf.h is included by utypes.h
 * and itself includes utf8.h and utf16.h after some
 * common definitions.
 * If U_NO_DEFAULT_INCLUDE_UTF_HEADERS is 1 then each of these headers must be
 * included explicitly if their definitions are used.
 *
 * utf8.h and utf16.h define macros for efficiently getting code points
 * in and out of UTF-8/16 strings.
 * utf16.h macros have "U16_" prefixes.
 * utf8.h defines similar macros with "U8_" prefixes for UTF-8 string handling.
 *
 * ICU mostly processes 16-bit Unicode strings.
 * Most of the time, such strings are well-formed UTF-16.
 * Single, unpaired surrogates must be handled as well, and are treated in ICU
 * like regular code points where possible.
 * (Pairs of surrogate code points are indistinguishable from supplementary
 * code points encoded as pairs of supplementary code units.)
 *
 * In fact, almost all Unicode code points in normal text (>99%)
 * are on the BMP (<=U+ffff) and even <=U+d7ff.
 * ICU functions handle supplementary code points (U+10000..U+10ffff)
 * but are optimized for the much more frequently occurring BMP code points.
 *
 * umachine.h defines UChar to be an unsigned 16-bit integer.
 * Since ICU 59, ICU uses char16_t in C++, UChar only in C,
 * and defines UChar=char16_t by default. See the UChar API docs for details.
 *
 * UChar32 is defined to be a signed 32-bit integer (int32_t), large enough for a 21-bit
 * Unicode code point (Unicode scalar value, 0..0x10ffff) and U_SENTINEL (-1).
 * Before ICU 2.4, the definition of UChar32 was similarly platform-dependent as
 * the definition of UChar. For details see the documentation for UChar32 itself.
 *
 * utf.h defines a small number of C macros for single Unicode code points.
 * These are simple checks for surrogates and non-characters.
 * For actual Unicode character properties see uchar.h.
 *
 * By default, string operations must be done with error checking in case
 * a string is not well-formed UTF-16 or UTF-8.
 *
 * The U16_ macros detect if a surrogate code unit is unpaired
 * (lead unit without trail unit or vice versa) and just return the unit itself
 * as the code point.
 *
 * The U8_ macros detect illegal byte sequences and return a negative value.
 * Starting with ICU 60, the observable length of a single illegal byte sequence
 * skipped by one of these macros follows the Unicode 6+ recommendation
 * which is consistent with the W3C Encoding Standard.
 *
 * There are ..._OR_FFFD versions of both U16_ and U8_ macros
 * that return U+FFFD for illegal code unit sequences.
 *
 * The regular "safe" macros require that the initial, passed-in string index
 * is within bounds. They only check the index when they read more than one
 * code unit. This is usually done with code similar to the following loop:
 * <pre>while(i<length) {
 *   U16_NEXT(s, i, length, c);
 *   // use c
 * }</pre>
 *
 * When it is safe to assume that text is well-formed UTF-16
 * (does not contain single, unpaired surrogates), then one can use
 * U16_..._UNSAFE macros.
 * These do not check for proper code unit sequences or truncated text and may
 * yield wrong results or even cause a crash if they are used with "malformed"
 * text.
 * In practice, U16_..._UNSAFE macros will produce slightly less code but
 * should not be faster because the processing is only different when a
 * surrogate code unit is detected, which will be rare.
 *
 * Similarly for UTF-8, there are "safe" macros without a suffix,
 * and U8_..._UNSAFE versions.
 * The performance differences are much larger here because UTF-8 provides so
 * many opportunities for malformed sequences.
 * The unsafe UTF-8 macros are entirely implemented inside the macro definitions
 * and are fast, while the safe UTF-8 macros call functions for some complicated cases.
 *
 * Unlike with UTF-16, malformed sequences cannot be expressed with distinct
 * code point values (0..U+10ffff). They are indicated with negative values instead.
 *
 * For more information see the ICU User Guide Strings chapter
 * (https://unicode-org.github.io/icu/userguide/strings).
 *
 * <em>Usage:</em>
 * ICU coding guidelines for if() statements should be followed when using these macros.
 * Compound statements (curly braces {}) must be used  for if-else-while... 
 * bodies and all macro statements should be terminated with semicolon.
 *
 * @stable ICU 2.4
 */

#ifndef __UTF_H__
#define __UTF_H__

#include "unicode/umachine.h"
/* include the utfXX.h after the following definitions */

/* single-code point definitions -------------------------------------------- */

/**
 * Is this code point a Unicode noncharacter?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_UNICODE_NONCHAR(c) \
    ((c)>=0xfdd0 && \
     ((c)<=0xfdef || ((c)&0xfffe)==0xfffe) && (c)<=0x10ffff)

/**
 * Is c a Unicode code point value (0..U+10ffff)
 * that can be assigned a character?
 *
 * Code points that are not characters include:
 * - single surrogate code points (U+d800..U+dfff, 2048 code points)
 * - the last two code points on each plane (U+__fffe and U+__ffff, 34 code points)
 * - U+fdd0..U+fdef (new with Unicode 3.1, 32 code points)
 * - the highest Unicode code point value is U+10ffff
 *
 * This means that all code points below U+d800 are character code points,
 * and that boundary is tested first for performance.
 *
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_UNICODE_CHAR(c) \
    ((uint32_t)(c)<0xd800 || \
        (0xdfff<(c) && (c)<=0x10ffff && !U_IS_UNICODE_NONCHAR(c)))

/**
 * Is this code point a BMP code point (U+0000..U+ffff)?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.8
 */
#define U_IS_BMP(c) ((uint32_t)(c)<=0xffff)

/**
 * Is this code point a supplementary code point (U+10000..U+10ffff)?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.8
 */
#define U_IS_SUPPLEMENTARY(c) ((uint32_t)((c)-0x10000)<=0xfffff)
 
/**
 * Is this code point a lead surrogate (U+d800..U+dbff)?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_LEAD(c) (((c)&0xfffffc00)==0xd800)

/**
 * Is this code point a trail surrogate (U+dc00..U+dfff)?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00)

/**
 * Is this code point a surrogate (U+d800..U+dfff)?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_SURROGATE(c) (((c)&0xfffff800)==0xd800)

/**
 * Assuming c is a surrogate code point (U_IS_SURROGATE(c)),
 * is it a lead surrogate?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 2.4
 */
#define U_IS_SURROGATE_LEAD(c) (((c)&0x400)==0)

/**
 * Assuming c is a surrogate code point (U_IS_SURROGATE(c)),
 * is it a trail surrogate?
 * @param c 32-bit code point
 * @return true or false
 * @stable ICU 4.2
 */
#define U_IS_SURROGATE_TRAIL(c) (((c)&0x400)!=0)

/* include the utfXX.h ------------------------------------------------------ */

#if !U_NO_DEFAULT_INCLUDE_UTF_HEADERS

#include "unicode/utf8.h"
#include "unicode/utf16.h"

/* utf_old.h contains deprecated, pre-ICU 2.4 definitions */
#include "unicode/utf_old.h"

#endif  /* !U_NO_DEFAULT_INCLUDE_UTF_HEADERS */

#endif  /* __UTF_H__ */

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