| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| /** |
| * @file ctype.h |
| * @brief ASCII character classification. |
| */ |
| |
| #include <sys/cdefs.h> |
| #include <xlocale.h> |
| |
| /* All the functions in this file are trivial, being but a single |
| * instruction on most architectures. For that reason, we inline them by |
| * default. This macro is meant for internal use only, so that we can |
| * also provide actual symbols for any caller that needs them. |
| */ |
| #if !defined(__BIONIC_CTYPE_INLINE) |
| #define __BIONIC_CTYPE_INLINE static __inline |
| #endif |
| |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_U 0x01 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_L 0x02 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_D 0x04 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_S 0x08 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_P 0x10 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_C 0x20 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_X 0x40 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_B 0x80 |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_R (_CTYPE_P|_CTYPE_U|_CTYPE_L|_CTYPE_D|_CTYPE_B) |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_A (_CTYPE_L|_CTYPE_U) |
| /** Internal implementation detail. Do not use. */ |
| #define _CTYPE_N _CTYPE_D |
| |
| __BEGIN_DECLS |
| |
| /** Internal implementation detail. Do not use. */ |
| extern const char* _ctype_; |
| |
| /** Returns true if `ch` is in `[A-Za-z]`. */ |
| __BIONIC_CTYPE_INLINE int isalpha(int __ch) { |
| return (__ch >= 'A' && __ch <= 'Z') || (__ch >= 'a' && __ch <= 'z'); |
| } |
| |
| /** Returns true if `ch` is a space or tab. */ |
| __BIONIC_CTYPE_INLINE int isblank(int __ch) { |
| return __ch == ' ' || __ch == '\t'; |
| } |
| |
| /** Returns true if `ch` is a control character (any character before space, plus DEL). */ |
| __BIONIC_CTYPE_INLINE int iscntrl(int __ch) { |
| return (__BIONIC_CAST(static_cast, unsigned, __ch) < ' ') || __ch == 0x7f; |
| } |
| |
| /** Returns true if `ch` is in `[0-9]`. */ |
| __BIONIC_CTYPE_INLINE int isdigit(int __ch) { |
| return (__ch >= '0' && __ch <= '9'); |
| } |
| |
| /** Returns true if `ch` is `[A-Za-z0-9]` or punctuation. */ |
| __BIONIC_CTYPE_INLINE int isgraph(int __ch) { |
| return (__ch >= '!' && __ch <= '~'); |
| } |
| |
| /** Returns true if `ch` is in `[a-z]`. */ |
| __BIONIC_CTYPE_INLINE int islower(int __ch) { |
| return (__ch >= 'a' && __ch <= 'z'); |
| } |
| |
| /** Returns true if `ch` is `[A-Za-z0-9]` or punctuation or space. */ |
| __BIONIC_CTYPE_INLINE int isprint(int __ch) { |
| return (__ch >= ' ' && __ch <= '~'); |
| } |
| |
| /** Returns true if `ch` is in `[ \f\n\r\t\v]`. */ |
| __BIONIC_CTYPE_INLINE int isspace(int __ch) { |
| return __ch == ' ' || (__ch >= '\t' && __ch <= '\r'); |
| } |
| |
| /** Returns true if `ch` is in `[A-Z]`. */ |
| __BIONIC_CTYPE_INLINE int isupper(int __ch) { |
| return (__ch >= 'A' && __ch <= 'Z'); |
| } |
| |
| /** Returns true if `ch` is in `[0-9A-Fa-f]`. */ |
| __BIONIC_CTYPE_INLINE int isxdigit(int __ch) { |
| return (__ch >= '0' && __ch <= '9') || (__ch >= 'a' && __ch <= 'f') || (__ch >= 'A' && __ch <= 'F'); |
| } |
| |
| /** Returns true if `ch` is in `[A-Za-z0-9]`. */ |
| __BIONIC_CTYPE_INLINE int isalnum(int __ch) { |
| return isalpha(__ch) || isdigit(__ch); |
| } |
| |
| /** Returns true if `ch` is punctuation. */ |
| __BIONIC_CTYPE_INLINE int ispunct(int __ch) { |
| return isgraph(__ch) && !isalnum(__ch); |
| } |
| |
| /** |
| * Returns the corresponding lower-case character if `ch` is upper-case, or undefined otherwise. |
| * |
| * Prefer tolower() instead. |
| */ |
| __BIONIC_CTYPE_INLINE int _tolower(int __ch) { |
| return __ch | 0x20; |
| } |
| |
| /** Returns the corresponding lower-case character if `ch` is upper-case, or `ch` otherwise. */ |
| __BIONIC_CTYPE_INLINE int tolower(int __ch) { |
| if (__ch >= 'A' && __ch <= 'Z') return _tolower(__ch); |
| return __ch; |
| } |
| |
| /** |
| * Returns the corresponding upper-case character if `ch` is lower-case, or undefined otherwise. |
| * |
| * Prefer toupper() instead. |
| */ |
| __BIONIC_CTYPE_INLINE int _toupper(int __ch) { |
| // Using EOR rather than AND makes no difference on arm, but saves an |
| // instruction on arm64. |
| return __ch ^ 0x20; |
| } |
| |
| /** Returns the corresponding upper-case character if `ch` is lower-case, or `ch` otherwise. */ |
| __BIONIC_CTYPE_INLINE int toupper(int __ch) { |
| if (__ch >= 'a' && __ch <= 'z') return _toupper(__ch); |
| return __ch; |
| } |
| |
| /** Returns true if `ch` is less than 0x80. */ |
| __BIONIC_CTYPE_INLINE int isascii(int __ch) { |
| return __BIONIC_CAST(static_cast, unsigned, __ch) < 0x80; |
| } |
| |
| /** Returns `ch & 0x7f`. */ |
| __BIONIC_CTYPE_INLINE int toascii(int __ch) { |
| return __ch & 0x7f; |
| } |
| |
| /** Like isalnum() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isalnum_l(int __ch, locale_t __l) { |
| return isalnum(__ch); |
| } |
| |
| /** Like isalpha() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isalpha_l(int __ch, locale_t __l) { |
| return isalpha(__ch); |
| } |
| |
| /** Like isblank() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isblank_l(int __ch, locale_t __l) { |
| return isblank(__ch); |
| } |
| |
| /** Like iscntrl() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int iscntrl_l(int __ch, locale_t __l) { |
| return iscntrl(__ch); |
| } |
| |
| /** Like isdigit() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isdigit_l(int __ch, locale_t __l) { |
| return isdigit(__ch); |
| } |
| |
| /** Like isgraph() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isgraph_l(int __ch, locale_t __l) { |
| return isgraph(__ch); |
| } |
| |
| /** Like islower() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int islower_l(int __ch, locale_t __l) { |
| return islower(__ch); |
| } |
| |
| /** Like isprint() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isprint_l(int __ch, locale_t __l) { |
| return isprint(__ch); |
| } |
| |
| /** Like ispunct() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int ispunct_l(int __ch, locale_t __l) { |
| return ispunct(__ch); |
| } |
| |
| /** Like isspace() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isspace_l(int __ch, locale_t __l) { |
| return isspace(__ch); |
| } |
| |
| /** Like isupper() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isupper_l(int __ch, locale_t __l) { |
| return isupper(__ch); |
| } |
| |
| /** Like isxdigit() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int isxdigit_l(int __ch, locale_t __l) { |
| return isxdigit(__ch); |
| } |
| |
| /** Like tolower() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int tolower_l(int __ch, locale_t __l) { |
| return tolower(__ch); |
| } |
| |
| /** Like toupper() but with an ignored `locale_t`. */ |
| __BIONIC_CTYPE_INLINE int toupper_l(int __ch, locale_t __l) { |
| return toupper(__ch); |
| } |
| |
| __END_DECLS |