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/*
* libdpkg - Debian packaging suite library routines
* c-ctype.h - ASCII C locale-only functions
*
* Copyright © 2009-2014 Guillem Jover <guillem@debian.org>
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LIBDPKG_C_CTYPE_H
#define LIBDPKG_C_CTYPE_H
#include <stdbool.h>
#include <dpkg/macros.h>
DPKG_BEGIN_DECLS
#define C_CTYPE_BIT(bit) (1 << (bit))
enum c_ctype_bit {
C_CTYPE_BLANK = C_CTYPE_BIT(0),
C_CTYPE_WHITE = C_CTYPE_BIT(1),
C_CTYPE_SPACE = C_CTYPE_BIT(2),
C_CTYPE_UPPER = C_CTYPE_BIT(3),
C_CTYPE_LOWER = C_CTYPE_BIT(4),
C_CTYPE_DIGIT = C_CTYPE_BIT(5),
C_CTYPE_ALPHA = C_CTYPE_UPPER | C_CTYPE_LOWER,
C_CTYPE_ALNUM = C_CTYPE_ALPHA | C_CTYPE_DIGIT,
};
bool
c_isbits(int c, enum c_ctype_bit bits);
/**
* Check if the character is [ \t].
*/
static inline bool
c_isblank(int c)
{
return c_isbits(c, C_CTYPE_BLANK);
}
/**
* Check if the character is [ \t\n].
*/
static inline bool
c_iswhite(int c)
{
return c_isbits(c, C_CTYPE_WHITE);
}
/**
* Check if the character is [ \v\t\f\r\n].
*/
static inline bool
c_isspace(int c)
{
return c_isbits(c, C_CTYPE_SPACE);
}
/**
* Check if the character is [0-9].
*/
static inline bool
c_isdigit(int c)
{
return c_isbits(c, C_CTYPE_DIGIT);
}
/**
* Check if the character is [A-Z].
*/
static inline bool
c_isupper(int c)
{
return c_isbits(c, C_CTYPE_UPPER);
}
/**
* Check if the character is [a-z].
*/
static inline bool
c_islower(int c)
{
return c_isbits(c, C_CTYPE_LOWER);
}
/**
* Check if the character is [a-zA-Z].
*/
static inline bool
c_isalpha(int c)
{
return c_isbits(c, C_CTYPE_ALPHA);
}
/**
* Check if the character is [a-zA-Z0-9].
*/
static inline bool
c_isalnum(int c)
{
return c_isbits(c, C_CTYPE_ALNUM);
}
/**
* Maps the character to its lower-case form.
*/
static inline int
c_tolower(int c)
{
return (c_isupper(c) ?
(DPKG_STATIC_CAST(unsigned char, c) & ~0x20) | 0x20 : c);
}
DPKG_END_DECLS
#endif
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