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incubator-nuttx/include/ctype.h

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/****************************************************************************
* include/ctype.h
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_CTYPE_H
#define __INCLUDE_CTYPE_H
/* There is no consistent ctype implementation, just a smattering of
* functions. Individually, they are okay, but a more standard, data lookup
* approach would make more sense if used extensively.
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/compiler.h>
#include <langinfo.h>
#ifdef CONFIG_LIBCXXTOOLCHAIN
/* GNU libstdc++ is expecting ctype.h to define a few macros for
* locale related functions like C++ streams.
*/
#define _U 01
#define _L 02
#define _N 04
#define _S 010
#define _P 020
#define _C 040
#define _X 0100
#define _B 0200
#endif
/****************************************************************************
* Inline Functions
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Name: isspace
*
* Description:
* Checks for white-space characters. In the "C" and "POSIX" locales,
* these are: space, form-feed ('\f'), newline ('\n'), carriage return
* ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
*
****************************************************************************/
#ifdef __cplusplus
static inline int isspace(int c)
{
return c == ' ' || c == '\t' || c == '\n' || c == '\r' ||
c == '\f' || c == '\v';
}
static inline int isspace_l(int c, locale_t locale)
{
return isspace(c);
}
#else
int isspace(int c);
int isspace_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isascii
*
* Description:
* Checks whether c is a 7-bit unsigned char value that fits into the
* ASCII character set.
*
****************************************************************************/
#ifdef __cplusplus
static inline int isascii(int c)
{
return c >= 0 && c <= 0x7f;
}
static inline int isascii_l(int c, locale_t locale)
{
return isascii(c);
}
#else
int isascii(int c);
int isascii_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isprint
*
* Description:
* Checks for a printable character (including space)
*
****************************************************************************/
#ifdef __cplusplus
static inline int isprint(int c)
{
return c >= 0x20 && c < 0x7f;
}
static inline int isprint_l(int c, locale_t locale)
{
return isprint(c);
}
#else
int isprint(int c);
int isprint_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isgraph
*
* Description:
* Checks for a printable character (excluding space)
*
****************************************************************************/
#ifdef __cplusplus
static inline int isgraph(int c)
{
return c > 0x20 && c < 0x7f;
}
static inline int isgraph_l(int c, locale_t locale)
{
return isgraph(c);
}
#else
int isgraph(int c);
int isgraph_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: iscntrl
*
* Description:
* Checks for control character.
*
****************************************************************************/
#ifdef __cplusplus
static inline int iscntrl(int c)
{
return c < 0x20 || c == 0x7f;
}
static inline int iscntrl_l(int c, locale_t locale)
{
return iscntrl(c);
}
#else
int iscntrl(int c);
int iscntrl_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: islower
*
* Description:
* Checks for an lowercase letter.
*
****************************************************************************/
#ifdef __cplusplus
static inline int islower(int c)
{
return c >= 'a' && c <= 'z';
}
static inline int islower_l(int c, locale_t locale)
{
return islower(c);
}
#else
int islower(int c);
int islower_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isupper
*
* Description:
* Checks for an uppercase letter.
*
****************************************************************************/
#ifdef __cplusplus
static inline int isupper(int c)
{
return c >= 'A' && c <= 'Z';
}
static inline int isupper_l(int c, locale_t locale)
{
return isupper(c);
}
#else
int isupper(int c);
int isupper_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isalpha
*
* Description:
* Checks for an alphabetic character
*
****************************************************************************/
#ifdef __cplusplus
static inline int isalpha(int c)
{
return islower(c) || isupper(c);
}
static inline int isalpha_l(int c, locale_t locale)
{
return isalpha(c);
}
#else
int isalpha(int c);
int isalpha_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isblank
*
* Description:
* Checks for blank characters (space or tab). C++11
*
****************************************************************************/
#ifdef __cplusplus
static inline int isblank(int c)
{
return c == ' ' || c == '\t';
}
static inline int isblank_l(int c, locale_t locale)
{
return isblank(c);
}
#else
int isblank(int c);
int isblank_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isdigit
*
* Description:
* ANSI standard isdigit implementation.
*
****************************************************************************/
#ifdef __cplusplus
static inline int isdigit(int c)
{
return c >= '0' && c <= '9';
}
static inline int isdigit_l(int c, locale_t locale)
{
return isdigit(c);
}
#else
int isdigit(int c);
int isdigit_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isalnum
*
* Description:
* Checks for an alphanumeric character
*
****************************************************************************/
#ifdef __cplusplus
static inline int isalnum(int c)
{
return isalpha(c) || isdigit(c);
}
static inline int isalnum_l(int c, locale_t locale)
{
return isalnum(c);
}
#else
int isalnum(int c);
int isalnum_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: ispunct
*
* Description:
* Checks for a printable character which is not a space or an
* alphanumeric character
*
****************************************************************************/
#ifdef __cplusplus
static inline int ispunct(int c)
{
return isgraph(c) && !isalnum(c);
}
static inline int ispunct_l(int c, locale_t locale)
{
return ispunct(c);
}
#else
int ispunct(int c);
int ispunct_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: isxdigit
*
* Description:
* isxdigit() checks for a hexadecimal digits, i.e. one of {0-9,a-f,A-F}
*
****************************************************************************/
#ifdef __cplusplus
static inline int isxdigit(int c)
{
return (c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F');
}
static inline int isxdigit_l(int c, locale_t locale)
{
return isxdigit(c);
}
#else
int isxdigit(int c);
int isxdigit_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: toupper
*
* Description:
* toupper() converts the letter c to upper case, if possible.
*
****************************************************************************/
#ifdef __cplusplus
static inline int toupper(int c)
{
return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
}
static inline int toupper_l(int c, locale_t locale)
{
return toupper(c);
}
#else
int toupper(int c);
int toupper_l(int c, locale_t locale);
#endif
/****************************************************************************
* Name: tolower
*
* Description:
* tolower() converts the letter c to lower case, if possible.
*
****************************************************************************/
#ifdef __cplusplus
static inline int tolower(int c)
{
return (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
}
static inline int tolower_l(int c, locale_t locale)
{
return tolower(c);
}
#else
int tolower(int c);
int tolower_l(int c, locale_t locale);
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_CTYPE_H */
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