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Diffstat (limited to 'nuttx/include/ctype.h')
| -rw-r--r-- | nuttx/include/ctype.h | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/nuttx/include/ctype.h b/nuttx/include/ctype.h new file mode 100644 index 000000000..6959a44b1 --- /dev/null +++ b/nuttx/include/ctype.h @@ -0,0 +1,223 @@ +/**************************************************************************** + * include/ctype.h + * + * Copyright (C) 2007-2009, 2011 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 iscontrol(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 */ |