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author | Bruno de Oliveira Abinader <bruno@mapbox.com> | 2019-08-13 15:27:46 +0300 |
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committer | Bruno de Oliveira Abinader <bruno@mapbox.com> | 2019-08-13 15:27:46 +0300 |
commit | 234b5069fc579b19e64b2dda327346710f958b29 (patch) | |
tree | c7c7d896f30e576c31ee4bfb79947032181af4ca /vendor/icu/include/unicode/utf.h | |
parent | 12615d4927d269701a82002346eb496ce9077b43 (diff) | |
download | qtlocation-mapboxgl-234b5069fc579b19e64b2dda327346710f958b29.tar.gz |
[build] ICU
Diffstat (limited to 'vendor/icu/include/unicode/utf.h')
-rw-r--r-- | vendor/icu/include/unicode/utf.h | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/vendor/icu/include/unicode/utf.h b/vendor/icu/include/unicode/utf.h deleted file mode 100644 index 9b85c7620c..0000000000 --- a/vendor/icu/include/unicode/utf.h +++ /dev/null @@ -1,225 +0,0 @@ -// © 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 - * (http://userguide.icu-project.org/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__ */ |