/* This software is licensed by the MIT License, see LICENSE file */
/*                                Copyright © 2022 Gregory Lirent */

#include "../../modules/libunic/include.h"
#include "../../include/string.h"
#include "../__internal/include.h"

#ifndef LIBCDSB_SRC_STRING_INCLUDE_H
#define LIBCDSB_SRC_STRING_INCLUDE_H

ainline(char* libcdsb_builtin_next_char(char* s)) {
    int cs = charsize(s);

    if (cs) return s + cs;
    return ++s;
}

ainline(char* libcdsb_builtin_prev_char(char* s)) {

    if (*(--s)&0x80) {
        char* p = s;

        while ((*(--p)&0xc0) == 0x80) {}

        if (charsize(p) == s - p)
            return p;
    }

    return s;
}

#define next_char libcdsb_builtin_next_char
#define prev_char libcdsb_builtin_prev_char

#endif /* LIBCDSB_SRC_STRING_INCLUDE_H */