/* Internal functions for Unicode character case mappings.
   Copyright (C) 2009-2018 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2009.

   This program is free software: you can redistribute it and/or
   modify it under the terms of either:

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at your
       option) any later version.

   or

     * 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.

   or both in parallel, as here.
   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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <stdbool.h>
#include <stddef.h>

#include "unitypes.h"
#include "uninorm.h"

/* Return true if mapping NFD(S) to via MAPPING is a no-op.  */
extern int
       u8_is_invariant (const uint8_t *s, size_t n,
                        uint8_t * (*mapping) (const uint8_t *s, size_t n, const char *iso639_language,
                                              uninorm_t nf,
                                              uint8_t *resultbuf, size_t *lengthp),
                        const char *iso639_language,
                        bool *resultp);
extern int
       u16_is_invariant (const uint16_t *s, size_t n,
                         uint16_t * (*mapping) (const uint16_t *s, size_t n, const char *iso639_language,
                                                uninorm_t nf,
                                                uint16_t *resultbuf, size_t *lengthp),
                         const char *iso639_language,
                         bool *resultp);
extern int
       u32_is_invariant (const uint32_t *s, size_t n,
                         uint32_t * (*mapping) (const uint32_t *s, size_t n, const char *iso639_language,
                                                uninorm_t nf,
                                                uint32_t *resultbuf, size_t *lengthp),
                         const char *iso639_language,
                         bool *resultp);