1#include <wchar.h>
2#include <time.h>
3#include <locale.h>
4#include "locale_impl.h"
5#include "libc.h"
6
7const char *__strftime_fmt_1(char (*s)[100], size_t *l, int f, const struct tm *tm, locale_t loc);
8
9size_t __wcsftime_l(wchar_t *restrict s, size_t n, const wchar_t *restrict f, const struct tm *restrict tm, locale_t loc)
10{
11	size_t l, k;
12	char buf[100];
13	wchar_t wbuf[100];
14	wchar_t *p;
15	const char *t_mb;
16	const wchar_t *t;
17	int plus;
18	unsigned long width;
19	for (l=0; l<n; f++) {
20		if (!*f) {
21			s[l] = 0;
22			return l;
23		}
24		if (*f != '%') {
25			s[l++] = *f;
26			continue;
27		}
28		f++;
29		if ((plus = (*f == '+'))) f++;
30		width = wcstoul(f, &p, 10);
31		if (*p == 'C' || *p == 'F' || *p == 'G' || *p == 'Y') {
32			if (!width && p!=f) width = 1;
33		} else {
34			width = 0;
35		}
36		f = p;
37		if (*f == 'E' || *f == 'O') f++;
38		t_mb = __strftime_fmt_1(&buf, &k, *f, tm, loc);
39		if (!t_mb) break;
40		k = mbstowcs(wbuf, t_mb, sizeof wbuf / sizeof *wbuf);
41		if (k == (size_t)-1) return 0;
42		t = wbuf;
43		if (width) {
44			for (; *t=='+' || *t=='-' || (*t=='0'&&t[1]); t++, k--);
45			width--;
46			if (plus && tm->tm_year >= 10000-1900)
47				s[l++] = '+';
48			else if (tm->tm_year < -1900)
49				s[l++] = '-';
50			else
51				width++;
52			for (; width > k && l < n; width--)
53				s[l++] = '0';
54		}
55		if (k >= n-l) k = n-l;
56		wmemcpy(s+l, t, k);
57		l += k;
58	}
59	if (n) {
60		if (l==n) l=n-1;
61		s[l] = 0;
62	}
63	return 0;
64}
65
66size_t wcsftime(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f, const struct tm *restrict tm)
67{
68	return __wcsftime_l(wcs, n, f, tm, CURRENT_LOCALE);
69}
70
71weak_alias(__wcsftime_l, wcsftime_l);
72