72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
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#include <wchar.h>
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#include <time.h>
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#include <locale.h>
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#include "locale_impl.h"
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#include "time_impl.h"
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size_t __wcsftime_l(wchar_t *restrict s, size_t n, const wchar_t *restrict f, const struct tm *restrict tm, locale_t loc)
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{
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size_t l, k;
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char buf[100];
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wchar_t wbuf[100];
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wchar_t *p;
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const char *t_mb;
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const wchar_t *t;
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int pad, plus;
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unsigned long width;
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for (l=0; l<n; f++) {
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if (!*f) {
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s[l] = 0;
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return l;
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}
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if (*f != '%') {
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s[l++] = *f;
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continue;
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}
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f++;
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pad = 0;
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if (*f == '-' || *f == '_' || *f == '0') pad = *f++;
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if ((plus = (*f == '+'))) f++;
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width = wcstoul(f, &p, 10);
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if (*p == 'C' || *p == 'F' || *p == 'G' || *p == 'Y') {
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if (!width && p!=f) width = 1;
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} else {
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width = 0;
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}
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f = p;
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if (*f == 'E' || *f == 'O') f++;
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t_mb = __strftime_fmt_1(&buf, &k, *f, tm, loc, pad);
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if (!t_mb) break;
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k = mbstowcs(wbuf, t_mb, sizeof wbuf / sizeof *wbuf);
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if (k == (size_t)-1) return 0;
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t = wbuf;
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if (width) {
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for (; *t=='+' || *t=='-' || (*t=='0'&&t[1]); t++, k--);
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width--;
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if (plus && tm->tm_year >= 10000-1900)
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s[l++] = '+';
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else if (tm->tm_year < -1900)
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s[l++] = '-';
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else
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width++;
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for (; width > k && l < n; width--)
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s[l++] = '0';
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}
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if (k >= n-l) k = n-l;
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wmemcpy(s+l, t, k);
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l += k;
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}
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if (n) {
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if (l==n) l=n-1;
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s[l] = 0;
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}
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return 0;
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}
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size_t wcsftime(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f, const struct tm *restrict tm)
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{
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return __wcsftime_l(wcs, n, f, tm, CURRENT_LOCALE);
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}
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weak_alias(__wcsftime_l, wcsftime_l);
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