1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #pragma once 30 31 /** 32 * @file uchar.h 33 * @brief Unicode functions. 34 */ 35 36 #include <stddef.h> 37 #include <sys/cdefs.h> 38 #include <bits/mbstate_t.h> 39 40 __BEGIN_DECLS 41 42 #if !defined(__cplusplus) 43 /** The UTF-16 character type. */ 44 typedef __CHAR16_TYPE__ char16_t; 45 /** The UTF-32 character type. */ 46 typedef __CHAR32_TYPE__ char32_t; 47 #endif 48 49 /** On Android, char16_t is UTF-16. */ 50 #define __STD_UTF_16__ 1 51 52 /** On Android, char32_t is UTF-32. */ 53 #define __STD_UTF_32__ 1 54 55 /** 56 * [c16rtomb(3)](http://man7.org/linux/man-pages/man3/c16rtomb.3.html) converts a single UTF-16 57 * character to UTF-8. 58 * 59 * Returns the number of bytes written to `__buf` on success, and returns -1 and sets `errno` 60 * on failure. 61 * 62 * Available since API level 21. 63 */ 64 size_t c16rtomb(char* _Nullable __buf, char16_t __ch16, mbstate_t* _Nullable __ps) __INTRODUCED_IN(21); 65 66 /** 67 * [c32rtomb(3)](http://man7.org/linux/man-pages/man3/c32rtomb.3.html) converts a single UTF-32 68 * character to UTF-8. 69 * 70 * Returns the number of bytes written to `__buf` on success, and returns -1 and sets `errno` 71 * on failure. 72 * 73 * Available since API level 21. 74 */ 75 size_t c32rtomb(char* _Nullable __buf, char32_t __ch32, mbstate_t* _Nullable __ps) __INTRODUCED_IN(21); 76 77 /** 78 * [mbrtoc16(3)](http://man7.org/linux/man-pages/man3/mbrtoc16.3.html) converts the next UTF-8 79 * sequence to a UTF-16 code point. 80 * 81 * Available since API level 21. 82 */ 83 size_t mbrtoc16(char16_t* _Nullable __ch16, const char* _Nullable __s, size_t __n, mbstate_t* _Nullable __ps) __INTRODUCED_IN(21); 84 85 /** 86 * [mbrtoc32(3)](http://man7.org/linux/man-pages/man3/mbrtoc32.3.html) converts the next UTF-8 87 * sequence to a UTF-32 code point. 88 * 89 * Available since API level 21. 90 */ 91 size_t mbrtoc32(char32_t* _Nullable __ch32, const char* _Nullable __s, size_t __n, mbstate_t* _Nullable __ps) __INTRODUCED_IN(21); 92 93 __END_DECLS 94
