wlite_stdlib.h

/*
 * wlite: A 16-bit Unicode based tiny <wchar.h> library with CJK features
 * Copyright (C) 2022 Eido INOUE
 * 
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of 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.
 * 
 * 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 Lesser 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 <http://www.gnu.org/licenses/>.
*/

#ifndef WLITE_STDLIB_H_
#define WLITE_STDLIB_H_

#include "wlite_config.h"

/*****************************************************************************/

#include <stddef.h>   /* wchar_t, size_t, NULL */

#define WLITE_MB_MAX_LEN     6
#if WLITE_ALLOW_6_BYTE_UTF8_SURROGATE
#   define WLITE_MB_CUR_LEN  6
#else
#   define WLITE_MB_CUR_LEN  4
#endif

int            wlite_mblen    (const char*,size_t);
size_t         wlite_mbstowcs (wchar_t*,const char*,size_t);
int            wlite_mbtowc   (wchar_t*,const char*,size_t);
size_t         wlite_wcstombs (char*,const wchar_t*,size_t);
int            wlite_wctomb   (char*,wchar_t);

/*****************************************************************************/

#if WLITE_REDEF_STDC
    /* don't let these header file load again by loading them now, because it
     * will redefine our macros
     */

    #include <limits.h>     /* MB_LEN_MAX */
    #include <stdlib.h>     /* MB_CUR_MAX / FIXME: freestanding */

    #undef MB_CUR_LEN
    #undef MB_MAX_LEN

    #define MB_CUR_LEN WLITE_MB_CUR_LEN
    #define MB_MAX_LEN WLITE_MB_MAX_LEN

    #define mblen      wlite_mblen
    #define mbstowcs   wlite_mbstowcs
    #define mbtowc     wlite_mbtowc
    #define wcstombs   wlite_wcstombs
    #define wctomb     wlite_wctomb
#endif

#endif