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#include <wchar.h>
#include <stdio.h>
#include "_assert.h"
wchar_t * fgetws(wchar_t * restrict s, int n, FILE * restrict stream)
{
ASSERT_NONNULL(s);
ASSERT_NONNULL(stream);
if (fwide(stream, 1) <= 0) {
/* not a wide stream */
return NULL;
}
int i;
for (i = 0; i < n; i++) {
s[i] = fgetwc(stream);
if (s[i] == WEOF) {
if (feof(stream)) {
s[i] = L'\0';
return s;
}
/* read or encoding error */
return NULL;
}
if (s[i] == L'\0') {
break;
}
}
s[i] = L'\0';
return s;
}
/*
STDC(199409)
*/
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