#include "stdio_impl.h"
#include <wchar.h>

wint_t __fgetwc_unlocked(FILE*);

wchar_t* fgetws(wchar_t* restrict s, int n, FILE* restrict f) {
    wchar_t* p = s;

    if (!n--)
        return s;

    FLOCK(f);

    for (; n; n--) {
        wint_t c = __fgetwc_unlocked(f);
        if (c == WEOF)
            break;
        *p++ = c;
        if (c == '\n')
            break;
    }
    *p = 0;
    if (ferror(f))
        p = s;

    FUNLOCK(f);

    return (p == s) ? NULL : s;
}

weak_alias(fgetws, fgetws_unlocked);