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107 lines
3.4 KiB
C
107 lines
3.4 KiB
C
/*-
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* Copyright (c) 2012-2014 Dag-Erling Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Author: Dag-Erling Smørgrav <des@des.no>
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*
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* $Cryb$
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*/
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#ifndef CRYB_CTYPE_H_INCLUDED
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#define CRYB_CTYPE_H_INCLUDED
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/*
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* Evaluates to non-zero if the argument is a digit.
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*/
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#define is_digit(ch) \
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(ch >= '0' && ch <= '9')
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/*
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* Evaluates to non-zero if the argument is a hex digit.
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*/
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#define is_xdigit(ch) \
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((ch >= '0' && ch <= '9') || \
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(ch >= 'a' && ch <= 'f') || \
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(ch >= 'A' && ch <= 'F'))
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/*
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* Evaluates to non-zero if the argument is an uppercase letter.
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*/
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#define is_upper(ch) \
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(ch >= 'A' && ch <= 'Z')
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/*
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* Evaluates to non-zero if the argument is a lowercase letter.
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*/
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#define is_lower(ch) \
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(ch >= 'a' && ch <= 'z')
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/*
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* Evaluates to non-zero if the argument is a letter.
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*/
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#define is_letter(ch) \
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(is_upper(ch) || is_lower(ch))
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/*
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* Evaluates to non-zero if the argument is a linear whitespace character.
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* For the purposes of this macro, the definition of linear whitespace is
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* extended to include the form feed and carraige return characters.
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*/
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#define is_lws(ch) \
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(ch == ' ' || ch == '\t' || ch == '\f' || ch == '\r')
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/*
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* Evaluates to non-zero if the argument is a whitespace character.
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*/
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#define is_ws(ch) \
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(is_lws(ch) || ch == '\n')
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/*
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* Evaluates to non-zero if the argument is a printable ASCII character.
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* Assumes that the execution character set is a superset of ASCII.
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*/
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#define is_p(ch) \
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(ch >= '!' && ch <= '~')
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/*
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* Evaluates to non-zero if the argument belongs to the POSIX Portable
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* Filename Character Set. Assumes that the execution character set is a
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* superset of ASCII.
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*/
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#define is_pfcs(ch) \
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(is_digit(ch) || is_letter(ch) || \
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ch == '.' || ch == '_' || ch == '-')
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/*
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* Evaluates to non-zero if the argument is an unreserved character
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* according to RFC 3986, i.e. can be used unencoded in URIs.
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*/
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#define is_uri(ch) \
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(is_digit(ch) || is_letter(ch) || \
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ch == '.' || ch == '_' || ch == '-' || ch == '~')
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#endif
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