c-ctype.h

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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);
 
static inline bool
c_isblank(int c)
{
        return c_isbits(c, C_CTYPE_BLANK);
}
 
static inline bool
c_iswhite(int c)
{
        return c_isbits(c, C_CTYPE_WHITE);
}
 
static inline bool
c_isspace(int c)
{
        return c_isbits(c, C_CTYPE_SPACE);
}
 
static inline bool
c_isdigit(int c)
{
        return c_isbits(c, C_CTYPE_DIGIT);
}
 
static inline bool
c_isupper(int c)
{
        return c_isbits(c, C_CTYPE_UPPER);
}
 
static inline bool
c_islower(int c)
{
        return c_isbits(c, C_CTYPE_LOWER);
}
 
static inline bool
c_isalpha(int c)
{
        return c_isbits(c, C_CTYPE_ALPHA);
}
 
static inline bool
c_isalnum(int c)
{
        return c_isbits(c, C_CTYPE_ALNUM);
}
 
static inline int
c_tolower(int c)
{
        return (c_isupper(c) ?
                (DPKG_STATIC_CAST(unsigned char, c) & ~0x20) | 0x20 : c);
}
 
DPKG_END_DECLS
 
#endif