1ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 2ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru******************************************************************************* 3ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* 483a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius* Copyright (C) 1999-2011, International Business Machines 5ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* Corporation and others. All Rights Reserved. 6ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* 7ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru******************************************************************************* 8ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* file name: utf.h 9ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* encoding: US-ASCII 10ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* tab size: 8 (not used) 11ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* indentation:4 12ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* 13ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* created on: 1999sep09 14ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* created by: Markus W. Scherer 15ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru*/ 16ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 17ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 18ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * \file 19ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * \brief C API: Code point macros 20ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 21ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This file defines macros for checking whether a code point is 22ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * a surrogate or a non-character etc. 23ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The UChar and UChar32 data types for Unicode code units and code points 2583a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * are defined in umachine.h because they can be machine-dependent. 26ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 2783a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * If U_NO_DEFAULT_INCLUDE_UTF_HEADERS is 0 then utf.h is included by utypes.h 2883a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * and itself includes utf8.h and utf16.h after some 2983a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * common definitions. 3083a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * If U_NO_DEFAULT_INCLUDE_UTF_HEADERS is 1 then each of these headers must be 3183a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * included explicitly if their definitions are used. 3283a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * 3383a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * utf8.h and utf16.h define macros for efficiently getting code points 34ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * in and out of UTF-8/16 strings. 35ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * utf16.h macros have "U16_" prefixes. 36ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * utf8.h defines similar macros with "U8_" prefixes for UTF-8 string handling. 37ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 3883a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * ICU mostly processes 16-bit Unicode strings. 39ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Most of the time, such strings are well-formed UTF-16. 40ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Single, unpaired surrogates must be handled as well, and are treated in ICU 41ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * like regular code points where possible. 42ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (Pairs of surrogate code points are indistinguishable from supplementary 43ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * code points encoded as pairs of supplementary code units.) 44ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 45ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In fact, almost all Unicode code points in normal text (>99%) 46ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * are on the BMP (<=U+ffff) and even <=U+d7ff. 47ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ICU functions handle supplementary code points (U+10000..U+10ffff) 48ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * but are optimized for the much more frequently occurring BMP code points. 49ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5083a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * umachine.h defines UChar to be an unsigned 16-bit integer. 5183a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * Where available, UChar is defined to be a char16_t 5283a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * or a wchar_t (if that is an unsigned 16-bit type), otherwise uint16_t. 53ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 54ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * UChar32 is defined to be a signed 32-bit integer (int32_t), large enough for a 21-bit 55ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Unicode code point (Unicode scalar value, 0..0x10ffff). 56ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Before ICU 2.4, the definition of UChar32 was similarly platform-dependent as 57ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the definition of UChar. For details see the documentation for UChar32 itself. 58ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5983a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * utf.h defines a small number of C macros for single Unicode code points. 60ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * These are simple checks for surrogates and non-characters. 61ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For actual Unicode character properties see uchar.h. 62ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 63ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By default, string operations must be done with error checking in case 64ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * a string is not well-formed UTF-16. 65ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The macros will detect if a surrogate code unit is unpaired 66ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (lead unit without trail unit or vice versa) and just return the unit itself 67ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * as the code point. 68ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 69ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The regular "safe" macros require that the initial, passed-in string index 70ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * is within bounds. They only check the index when they read more than one 71ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * code unit. This is usually done with code similar to the following loop: 72ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * <pre>while(i<length) { 73ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * U16_NEXT(s, i, length, c); 74ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * // use c 75ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * }</pre> 76ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 77ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * When it is safe to assume that text is well-formed UTF-16 78ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (does not contain single, unpaired surrogates), then one can use 79ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * U16_..._UNSAFE macros. 80ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * These do not check for proper code unit sequences or truncated text and may 81ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * yield wrong results or even cause a crash if they are used with "malformed" 82ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * text. 83ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In practice, U16_..._UNSAFE macros will produce slightly less code but 84ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * should not be faster because the processing is only different when a 85ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * surrogate code unit is detected, which will be rare. 86ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 87ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Similarly for UTF-8, there are "safe" macros without a suffix, 88ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and U8_..._UNSAFE versions. 89ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The performance differences are much larger here because UTF-8 provides so 90ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * many opportunities for malformed sequences. 91ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The unsafe UTF-8 macros are entirely implemented inside the macro definitions 92ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and are fast, while the safe UTF-8 macros call functions for all but the 93ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * trivial (ASCII) cases. 94ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (ICU 3.6 optimizes U8_NEXT() and U8_APPEND() to handle most other common 95ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters inline as well.) 96ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 97ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Unlike with UTF-16, malformed sequences cannot be expressed with distinct 98ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * code point values (0..U+10ffff). They are indicated with negative values instead. 99ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For more information see the ICU User Guide Strings chapter 10183a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius * (http://userguide.icu-project.org/strings). 102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * <em>Usage:</em> 104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ICU coding guidelines for if() statements should be followed when using these macros. 105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Compound statements (curly braces {}) must be used for if-else-while... 106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * bodies and all macro statements should be terminated with semicolon. 107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#ifndef __UTF_H__ 112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define __UTF_H__ 113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 11483a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius#include "unicode/umachine.h" 115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* include the utfXX.h after the following definitions */ 116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* single-code point definitions -------------------------------------------- */ 118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a Unicode noncharacter? 121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_UNICODE_NONCHAR(c) \ 126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((c)>=0xfdd0 && \ 127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)(c)<=0xfdef || ((c)&0xfffe)==0xfffe) && \ 128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint32_t)(c)<=0x10ffff) 129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is c a Unicode code point value (0..U+10ffff) 132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * that can be assigned a character? 133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Code points that are not characters include: 135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - single surrogate code points (U+d800..U+dfff, 2048 code points) 136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - the last two code points on each plane (U+__fffe and U+__ffff, 34 code points) 137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - U+fdd0..U+fdef (new with Unicode 3.1, 32 code points) 138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - the highest Unicode code point value is U+10ffff 139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * This means that all code points below U+d800 are character code points, 141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and that boundary is tested first for performance. 142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_UNICODE_CHAR(c) \ 148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)(c)<0xd800 || \ 149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)(c)>0xdfff && \ 150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint32_t)(c)<=0x10ffff && \ 151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru !U_IS_UNICODE_NONCHAR(c))) 152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a BMP code point (U+0000..U+ffff)? 155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.8 158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_BMP(c) ((uint32_t)(c)<=0xffff) 160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a supplementary code point (U+10000..U+10ffff)? 163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 164ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.8 166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_SUPPLEMENTARY(c) ((uint32_t)((c)-0x10000)<=0xfffff) 168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a lead surrogate (U+d800..U+dbff)? 171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 172ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_LEAD(c) (((c)&0xfffffc00)==0xd800) 176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a trail surrogate (U+dc00..U+dfff)? 179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_TRAIL(c) (((c)&0xfffffc00)==0xdc00) 184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Is this code point a surrogate (U+d800..U+dfff)? 187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_SURROGATE(c) (((c)&0xfffff800)==0xd800) 192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 193ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/** 194ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Assuming c is a surrogate code point (U_IS_SURROGATE(c)), 195ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * is it a lead surrogate? 196ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @param c 32-bit code point 197ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @return TRUE or FALSE 198ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * @stable ICU 2.4 199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define U_IS_SURROGATE_LEAD(c) (((c)&0x400)==0) 201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 20285bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho/** 20385bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * Assuming c is a surrogate code point (U_IS_SURROGATE(c)), 20485bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * is it a trail surrogate? 20585bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * @param c 32-bit code point 20685bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho * @return TRUE or FALSE 20727f654740f2a26ad62a5c155af9199af9e69b889claireho * @stable ICU 4.2 20885bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho */ 20985bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho#define U_IS_SURROGATE_TRAIL(c) (((c)&0x400)!=0) 21085bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho 211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* include the utfXX.h ------------------------------------------------------ */ 212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 21383a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius#if !U_NO_DEFAULT_INCLUDE_UTF_HEADERS 21483a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius 215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "unicode/utf8.h" 216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "unicode/utf16.h" 217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* utf_old.h contains deprecated, pre-ICU 2.4 definitions */ 219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "unicode/utf_old.h" 220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 22183a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius#endif /* !U_NO_DEFAULT_INCLUDE_UTF_HEADERS */ 22283a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius 22383a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius#endif /* __UTF_H__ */ 224