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-rw-r--r--src/time/wcsftime.c70
1 files changed, 49 insertions, 21 deletions
diff --git a/src/time/wcsftime.c b/src/time/wcsftime.c
index 7d9cef00..72af9137 100644
--- a/src/time/wcsftime.c
+++ b/src/time/wcsftime.c
@@ -4,33 +4,61 @@
#include <locale.h>
#include "libc.h"
-size_t __strftime_l(char *restrict, size_t, const char *restrict, const struct tm *restrict, locale_t);
+const char *__strftime_fmt_1(char (*s)[100], size_t *l, int f, const struct tm *tm, locale_t loc);
-size_t __wcsftime_l(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f, const struct tm *restrict tm, locale_t loc)
+size_t __wcsftime_l(wchar_t *restrict s, size_t n, const wchar_t *restrict f, const struct tm *restrict tm, locale_t loc)
{
- size_t k, n0=n;
- char out[100], in[4];
- while (*f) {
- if (!n) return 0;
+ size_t l, k;
+ char buf[100];
+ wchar_t wbuf[100];
+ wchar_t *p;
+ const char *t_mb;
+ const wchar_t *t;
+ int plus;
+ unsigned long width;
+ for (l=0; l+1<n; f++) {
+ if (!*f) {
+ s[l] = 0;
+ return l;
+ }
if (*f != '%') {
- *wcs++ = *f++;
- n--;
+ s[l++] = *f;
continue;
}
- in[2] = in[3] = 0;
- in[0] = *f++;
- if (strchr("EO", (in[1]=*f++)))
- in[2] = *f++;
- k = __strftime_l(out, sizeof out, in, tm, loc);
- if (!k) return 0;
- k = mbsrtowcs(wcs, (const char *[]){out}, n, 0);
- if (k==(size_t)-1) return 0;
- wcs += k;
- n -= k;
+ f++;
+ if ((plus = (*f == '+'))) f++;
+ width = wcstoul(f, &p, 10);
+ if (*p == 'C' || *p == 'F' || *p == 'G' || *p == 'Y') {
+ if (!width && p!=f) width = 1;
+ if (width >= n-l) return 0;
+ } else {
+ width = 0;
+ }
+ f = p;
+ if (*f == 'E' || *f == 'O') f++;
+ t_mb = __strftime_fmt_1(&buf, &k, *f, tm, loc);
+ if (!t_mb) return 0;
+ k = mbstowcs(wbuf, t_mb, sizeof wbuf / sizeof *wbuf);
+ if (k == (size_t)-1) return 0;
+ t = wbuf;
+ if (width) {
+ for (; *t=='+' || *t=='-' || (*t=='0'&&t[1]); t++, k--);
+ width--;
+ if (plus && tm->tm_year >= 10000-1900)
+ s[l++] = '+';
+ else if (tm->tm_year < -1900)
+ s[l++] = '-';
+ else
+ width++;
+ if (width >= n-l) return 0;
+ for (; width > k; width--)
+ s[l++] = '0';
+ }
+ if (k >= n-l) return 0;
+ wmemcpy(s+l, t, k);
+ l += k;
}
- if (!n) return 0;
- *wcs++ = 0;
- return n0-n;
+ return 0;
}
size_t wcsftime(wchar_t *restrict wcs, size_t n, const wchar_t *restrict f, const struct tm *restrict tm)