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/*!
* \file tolower.h
*
* \author Lubos Slovak <lubos.slovak@nic.cz>
*
* \brief Table for converting ASCII characters to lowercase.
*
* \addtogroup libknot
* @{
*/
/* Copyright (C) 2011 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program 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 3 of the License, or
(at your option) any later version.
This program 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 <http://www.gnu.org/licenses/>.
*/
#ifndef _KNOT_TOLOWER_H_
#define _KNOT_TOLOWER_H_
#include <stdint.h>
/*! \brief Size of the character conversion table. */
#define KNOT_CHAR_TABLE_SIZE 256
enum {
/*! \brief Size of the character conversion table. */
CHAR_TABLE_SIZE = KNOT_CHAR_TABLE_SIZE
};
/*! \brief Character table mapping uppercase letters to lowercase. */
extern const uint8_t char_table[CHAR_TABLE_SIZE];
/*!
* \brief Converts ASCII character to lowercase.
*
* \param c ASCII character code.
*
* \return \a c converted to lowercase (or \a c if not applicable).
*/
static inline uint8_t knot_tolower(uint8_t c) {
#if KNOT_CHAR_TABLE_SIZE < 256
assert(c < CHAR_TABLE_SIZE);
#endif
return char_table[c];
}
#endif /* _KNOT_TOLOWER_H_ */
/*! @} */
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