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