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incubator-nuttx/include/ctype.h

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/****************************************************************************
* include/ctype.h
*
* Copyright (C) 2007-2009, 2011, 2014, 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*
****************************************************************************/
#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>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* 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').
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isspace(int c)
{
return c == ' ' || c == '\t' || c == '\n' || c == '\r' ||
c == '\f' || c == '\v';
}
#else
# define isspace(c) \
((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r' || \
(c) == '\f' || (c) == '\v')
#endif
/****************************************************************************
* Name: isascii
*
* Description:
* Checks whether c is a 7-bit unsigned char value that fits into the
* ASCII character set.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isascii(int c)
{
return c >= 0 && c <= 0x7f;
}
#else
# define isascii(c) ((c) >= 0 && (c) <= 0x7f)
#endif
/****************************************************************************
* Name: isprint
*
* Description:
* Checks for a printable character (including space)
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isprint(int c)
{
return c >= 0x20 && c < 0x7f;
}
#else
# define isprint(c) ((c) >= 0x20 && (c) < 0x7f)
#endif
/****************************************************************************
* Name: isgraph
*
* Description:
* Checks for a printable character (excluding space)
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isgraph(int c)
{
return c > 0x20 && c < 0x7f;
}
#else
# define isgraph(c) ((c) > 0x20 && (c) < 0x7f)
#endif
/****************************************************************************
* Name: iscntrl
*
* Description:
* Checks for control character.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int iscntrl(int c)
{
return !isprint(c);
}
#else
# define iscntrl(c) (!isprint(c))
#endif
/****************************************************************************
* Name: islower
*
* Description:
* Checks for an lowercase letter.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int islower(int c)
{
return c >= 'a' && c <= 'z';
}
#else
# define islower(c) ((c) >= 'a' && (c) <= 'z')
#endif
/****************************************************************************
* Name: isupper
*
* Description:
* Checks for an uppercase letter.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isupper(int c)
{
return c >= 'A' && c <= 'Z';
}
#else
# define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#endif
/****************************************************************************
* Name: isalpha
*
* Description:
* Checks for an alphabetic character
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isalpha(int c)
{
return islower(c) || isupper(c);
}
#else
# define isalpha(c) (islower(c) || isupper(c))
#endif
/****************************************************************************
* Name: isblank
*
* Description:
* Checks for blank characters (space or tab). C++11
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isblank(int c)
{
return c == ' ' || c == '\t';
}
#else
# define isblank(c) ((c) == ' ' || (c) == '\t')
#endif
/****************************************************************************
* Name: isdigit
*
* Description:
* ANSI standard isdigit implementation.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isdigit(int c)
{
return c >= '0' && c <= '9';
}
#else
# define isdigit(c) ((c) >= '0' && (c) <= '9')
#endif
/****************************************************************************
* Name: isalnum
*
* Description:
* Checks for an alphanumeric character
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isalnum(int c)
{
return isalpha(c) || isdigit(c);
}
#else
# define isalnum(c) (isalpha(c) || isdigit(c))
#endif
/****************************************************************************
* Name: ispunct
*
* Description:
* Checks for a printable character which is not a space or an
* alphanumeric character
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int ispunct(int c)
{
return isgraph(c) && !isalnum(c);
}
#else
# define ispunct(c) (isgraph(c) && !isalnum(c))
#endif
/****************************************************************************
* Name: isxdigit
*
* Description:
* isxdigit() checks for a hexadecimal digits, i.e. one of {0-9,a-f,A-F}
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int isxdigit(int c)
{
return (c >= '0' && c <= '9') ||
(c >= 'a' && c <= 'f') ||
(c >= 'A' && c <= 'F');
}
#else
# define isxdigit(c) \
(((c) >= '0' && (c) <= '9') || \
((c) >= 'a' && (c) <= 'f') || \
((c) >= 'A' && (c) <= 'F'))
#endif
/****************************************************************************
* Name: toupper
*
* Description:
* toupper() converts the letter c to upper case, if possible.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int toupper(int c)
{
return (c >= 'a' && c <= 'z') ? c - 'a' + 'A' : c;
}
#else
# define toupper(c) \
(((c) >= 'a' && (c) <= 'z') ? ((c) - 'a' + 'A') : (c))
#endif
/****************************************************************************
* Name: tolower
*
* Description:
* tolower() converts the letter c to lower case, if possible.
*
****************************************************************************/
#if defined(CONFIG_HAVE_INLINE) || defined(__cplusplus)
static inline int tolower(int c)
{
return (c >= 'A' && c <= 'Z') ? (c - 'A' + 'a') : c;
}
#else
# define tolower(c) \
(((c) >= 'A' && (c) <= 'Z') ? ((c) - 'A' + 'a') : (c))
#endif
/****************************************************************************
* Public Type Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_CTYPE_H */
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