/****************************************************************************
* include/ctype.h
*
* Copyright (C) 2007-2009, 2011, 2014 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
****************************************************************************/
/****************************************************************************
* 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').
*
****************************************************************************/
#define isspace(c) \
((c) == ' ' || (c) == '\t' || (c) == '\n' || \
(c) == '\r' || (c) == '\f' || c== '\v')
/****************************************************************************
* Name: isascii
*
* Description:
* Checks whether c is a 7-bit unsigned char value that fits into the
* ASCII character set.
*
****************************************************************************/
#define isascii(c) ((c) >= 0 && (c) <= 0x7f)
/****************************************************************************
* Name: isprint
*
* Description:
* Checks for a printable character (including space)
*
****************************************************************************/
#define isprint(c) ((c) >= 0x20 && (c) < 0x7f)
/****************************************************************************
* Name: isgraph
*
* Description:
* Checks for a printable character (excluding space)
*
****************************************************************************/
#define isgraph(c) ((c) > 0x20 && (c) < 0x7f)
/****************************************************************************
* Name: iscntrl
*
* Description:
* Checks for control character.
*
****************************************************************************/
#define iscntrl(c) (!isprint(c))
/****************************************************************************
* Name: islower
*
* Description:
* Checks for an lowercase letter.
*
****************************************************************************/
#define islower(c) ((c) >= 'a' && (c) <= 'z')
/****************************************************************************
* Name: isupper
*
* Description:
* Checks for an uppercase letter.
*
****************************************************************************/
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
/****************************************************************************
* Name: isalpha
*
* Description:
* Checks for an alphabetic character
*
****************************************************************************/
#define isalpha(c) (islower(c) || isupper(c))
/****************************************************************************
* Name: isdigit
*
* Description:
* ANSI standard isdigit implementation.
*
****************************************************************************/
#define isdigit(c) ((c) >= '0' && (c) <= '9')
/****************************************************************************
* Name: isalnum
*
* Description:
* Checks for an alphanumeric character
*
****************************************************************************/
#define isalnum(c) (isalpha(c) || isdigit(c))
/****************************************************************************
* Name: ispunct
*
* Description:
* Checks for a printable character which is not a space or an
* alphanumeric character
*
****************************************************************************/
#define ispunct(c) (isgraph(c) && !isalnum(c))
/****************************************************************************
* Name: isxdigit
*
* Description:
* isxdigit() checks for a hexadecimal digits, i.e. one of {0-9,a-f,A-F}
*
****************************************************************************/
#define isxdigit(c) \
(((c) >= '0' && (c) <= '9') || \
((c) >= 'a' && (c) <= 'f') || \
((c) >= 'A' && (c) <= 'F'))
/****************************************************************************
* Name: toupper
*
* Description:
* toupper() converts the letter c to upper case, if possible.
*
****************************************************************************/
#define toupper(c) \
(((c) >= 'a' && (c) <= 'z') ? ((c) - 'a' + 'A') : (c))
/****************************************************************************
* Name: tolower
*
* Description:
* tolower() converts the letter c to lower case, if possible.
*
****************************************************************************/
#define tolower(c) \
(((c) >= 'A' && (c) <= 'Z') ? ((c) - 'A' + 'a') : (c))
/****************************************************************************
* 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 */
