[fusl] clang-format fusl

fusl/src/time/strftime.c

 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <langinfo.h>
 #include <locale.h>
 #include <time.h>
 #include <limits.h>
 #include "locale_impl.h"
 #include "libc.h"
 #include "time_impl.h"
 
-const char *__nl_langinfo_l(nl_item, locale_t);
-
-static int is_leap(int y)
-{
-        /* Avoid overflow */
-        if (y>INT_MAX-1900) y -= 2000;
-        y += 1900;
-        return !(y%4) && ((y%100) || !(y%400));
-}
-
-static int week_num(const struct tm *tm)
-{
-        int val = (tm->tm_yday + 7U - (tm->tm_wday+6U)%7) / 7;
-        /* If 1 Jan is just 1-3 days past Monday,
-         * the previous week is also in this year. */
-        if ((tm->tm_wday + 371U - tm->tm_yday - 2) % 7 <= 2)
-                val++;
-        if (!val) {
-                val = 52;
-                /* If 31 December of prev year a Thursday,
-                 * or Friday of a leap year, then the
-                 * prev year has 53 weeks. */
-                int dec31 = (tm->tm_wday + 7U - tm->tm_yday - 1) % 7;
-                if (dec31 == 4 || (dec31 == 5 && is_leap(tm->tm_year%400-1)))
-                        val++;
-        } else if (val == 53) {
-                /* If 1 January is not a Thursday, and not
-                 * a Wednesday of a leap year, then this
-                 * year has only 52 weeks. */
-                int jan1 = (tm->tm_wday + 371U - tm->tm_yday) % 7;
-                if (jan1 != 4 && (jan1 != 3 || !is_leap(tm->tm_year)))
-                        val = 1;
-        }
-        return val;
-}
-
-const char *__tm_to_tzname(const struct tm *);
-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)
-{
-        nl_item item;
-        long long val;
-        const char *fmt = "-";
-        int width = 2;
-
-        switch (f) {
-        case 'a':
-                if (tm->tm_wday > 6U) goto string;
-                item = ABDAY_1 + tm->tm_wday;
-                goto nl_strcat;
-        case 'A':
-                if (tm->tm_wday > 6U) goto string;
-                item = DAY_1 + tm->tm_wday;
-                goto nl_strcat;
-        case 'h':
-        case 'b':
-                if (tm->tm_mon > 11U) goto string;
-                item = ABMON_1 + tm->tm_mon;
-                goto nl_strcat;
-        case 'B':
-                if (tm->tm_mon > 11U) goto string;
-                item = MON_1 + tm->tm_mon;
-                goto nl_strcat;
-        case 'c':
-                item = D_T_FMT;
-                goto nl_strftime;
-        case 'C':
-                val = (1900LL+tm->tm_year) / 100;
-                goto number;
-        case 'd':
-                val = tm->tm_mday;
-                goto number;
-        case 'D':
-                fmt = "%m/%d/%y";
-                goto recu_strftime;
-        case 'e':
-                *l = snprintf(*s, sizeof *s, "%2d", tm->tm_mday);
-                return *s;
-        case 'F':
-                fmt = "%Y-%m-%d";
-                goto recu_strftime;
-        case 'g':
-        case 'G':
-                val = tm->tm_year + 1900LL;
-                if (tm->tm_yday < 3 && week_num(tm) != 1) val--;
-                else if (tm->tm_yday > 360 && week_num(tm) == 1) val++;
-                if (f=='g') val %= 100;
-                else width = 4;
-                goto number;
-        case 'H':
-                val = tm->tm_hour;
-                goto number;
-        case 'I':
-                val = tm->tm_hour;
-                if (!val) val = 12;
-                else if (val > 12) val -= 12;
-                goto number;
-        case 'j':
-                val = tm->tm_yday+1;
-                width = 3;
-                goto number;
-        case 'm':
-                val = tm->tm_mon+1;
-                goto number;
-        case 'M':
-                val = tm->tm_min;
-                goto number;
-        case 'n':
-                *l = 1;
-                return "\n";
-        case 'p':
-                item = tm->tm_hour >= 12 ? PM_STR : AM_STR;
-                goto nl_strcat;
-        case 'r':
-                item = T_FMT_AMPM;
-                goto nl_strftime;
-        case 'R':
-                fmt = "%H:%M";
-                goto recu_strftime;
-        case 's':
-                val = __tm_to_secs(tm) - tm->__tm_gmtoff;
-                width = 1;
-                goto number;
-        case 'S':
-                val = tm->tm_sec;
-                goto number;
-        case 't':
-                *l = 1;
-                return "\t";
-        case 'T':
-                fmt = "%H:%M:%S";
-                goto recu_strftime;
-        case 'u':
-                val = tm->tm_wday ? tm->tm_wday : 7;
-                width = 1;
-                goto number;
-        case 'U':
-                val = (tm->tm_yday + 7U - tm->tm_wday) / 7;
-                goto number;
-        case 'W':
-                val = (tm->tm_yday + 7U - (tm->tm_wday+6U)%7) / 7;
-                goto number;
-        case 'V':
-                val = week_num(tm);
-                goto number;
-        case 'w':
-                val = tm->tm_wday;
-                width = 1;
-                goto number;
-        case 'x':
-                item = D_FMT;
-                goto nl_strftime;
-        case 'X':
-                item = T_FMT;
-                goto nl_strftime;
-        case 'y':
-                val = tm->tm_year % 100;
-                goto number;
-        case 'Y':
-                val = tm->tm_year + 1900LL;
-                if (val >= 10000) {
-                        *l = snprintf(*s, sizeof *s, "+%lld", val);
-                        return *s;
-                }
-                width = 4;
-                goto number;
-        case 'z':
-                if (tm->tm_isdst < 0) {
-                        *l = 0;
-                        return "";
-                }
-                *l = snprintf(*s, sizeof *s, "%+.2d%.2d",
-                        (tm->__tm_gmtoff)/3600,
-                        abs(tm->__tm_gmtoff%3600)/60);
-                return *s;
-        case 'Z':
-                if (tm->tm_isdst < 0) {
-                        *l = 0;
-                        return "";
-                }
-                fmt = __tm_to_tzname(tm);
-                goto string;
-        case '%':
-                *l = 1;
-                return "%";
-        default:
-                return 0;
-        }
+const char* __nl_langinfo_l(nl_item, locale_t);
+
+static int is_leap(int y) {
+  /* Avoid overflow */
+  if (y > INT_MAX - 1900)
+    y -= 2000;
+  y += 1900;
+  return !(y % 4) && ((y % 100) || !(y % 400));
+}
+
+static int week_num(const struct tm* tm) {
+  int val = (tm->tm_yday + 7U - (tm->tm_wday + 6U) % 7) / 7;
+  /* If 1 Jan is just 1-3 days past Monday,
+   * the previous week is also in this year. */
+  if ((tm->tm_wday + 371U - tm->tm_yday - 2) % 7 <= 2)
+    val++;
+  if (!val) {
+    val = 52;
+    /* If 31 December of prev year a Thursday,
+     * or Friday of a leap year, then the
+     * prev year has 53 weeks. */
+    int dec31 = (tm->tm_wday + 7U - tm->tm_yday - 1) % 7;
+    if (dec31 == 4 || (dec31 == 5 && is_leap(tm->tm_year % 400 - 1)))
+      val++;
+  } else if (val == 53) {
+    /* If 1 January is not a Thursday, and not
+     * a Wednesday of a leap year, then this
+     * year has only 52 weeks. */
+    int jan1 = (tm->tm_wday + 371U - tm->tm_yday) % 7;
+    if (jan1 != 4 && (jan1 != 3 || !is_leap(tm->tm_year)))
+      val = 1;
+  }
+  return val;
+}
+
+const char* __tm_to_tzname(const struct tm*);
+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) {
+  nl_item item;
+  long long val;
+  const char* fmt = "-";
+  int width = 2;
+
+  switch (f) {
+    case 'a':
+      if (tm->tm_wday > 6U)
+        goto string;
+      item = ABDAY_1 + tm->tm_wday;
+      goto nl_strcat;
+    case 'A':
+      if (tm->tm_wday > 6U)
+        goto string;
+      item = DAY_1 + tm->tm_wday;
+      goto nl_strcat;
+    case 'h':
+    case 'b':
+      if (tm->tm_mon > 11U)
+        goto string;
+      item = ABMON_1 + tm->tm_mon;
+      goto nl_strcat;
+    case 'B':
+      if (tm->tm_mon > 11U)
+        goto string;
+      item = MON_1 + tm->tm_mon;
+      goto nl_strcat;
+    case 'c':
+      item = D_T_FMT;
+      goto nl_strftime;
+    case 'C':
+      val = (1900LL + tm->tm_year) / 100;
+      goto number;
+    case 'd':
+      val = tm->tm_mday;
+      goto number;
+    case 'D':
+      fmt = "%m/%d/%y";
+      goto recu_strftime;
+    case 'e':
+      *l = snprintf(*s, sizeof *s, "%2d", tm->tm_mday);
+      return *s;
+    case 'F':
+      fmt = "%Y-%m-%d";
+      goto recu_strftime;
+    case 'g':
+    case 'G':
+      val = tm->tm_year + 1900LL;
+      if (tm->tm_yday < 3 && week_num(tm) != 1)
+        val--;
+      else if (tm->tm_yday > 360 && week_num(tm) == 1)
+        val++;
+      if (f == 'g')
+        val %= 100;
+      else
+        width = 4;
+      goto number;
+    case 'H':
+      val = tm->tm_hour;
+      goto number;
+    case 'I':
+      val = tm->tm_hour;
+      if (!val)
+        val = 12;
+      else if (val > 12)
+        val -= 12;
+      goto number;
+    case 'j':
+      val = tm->tm_yday + 1;
+      width = 3;
+      goto number;
+    case 'm':
+      val = tm->tm_mon + 1;
+      goto number;
+    case 'M':
+      val = tm->tm_min;
+      goto number;
+    case 'n':
+      *l = 1;
+      return "\n";
+    case 'p':
+      item = tm->tm_hour >= 12 ? PM_STR : AM_STR;
+      goto nl_strcat;
+    case 'r':
+      item = T_FMT_AMPM;
+      goto nl_strftime;
+    case 'R':
+      fmt = "%H:%M";
+      goto recu_strftime;
+    case 's':
+      val = __tm_to_secs(tm) - tm->__tm_gmtoff;
+      width = 1;
+      goto number;
+    case 'S':
+      val = tm->tm_sec;
+      goto number;
+    case 't':
+      *l = 1;
+      return "\t";
+    case 'T':
+      fmt = "%H:%M:%S";
+      goto recu_strftime;
+    case 'u':
+      val = tm->tm_wday ? tm->tm_wday : 7;
+      width = 1;
+      goto number;
+    case 'U':
+      val = (tm->tm_yday + 7U - tm->tm_wday) / 7;
+      goto number;
+    case 'W':
+      val = (tm->tm_yday + 7U - (tm->tm_wday + 6U) % 7) / 7;
+      goto number;
+    case 'V':
+      val = week_num(tm);
+      goto number;
+    case 'w':
+      val = tm->tm_wday;
+      width = 1;
+      goto number;
+    case 'x':
+      item = D_FMT;
+      goto nl_strftime;
+    case 'X':
+      item = T_FMT;
+      goto nl_strftime;
+    case 'y':
+      val = tm->tm_year % 100;
+      goto number;
+    case 'Y':
+      val = tm->tm_year + 1900LL;
+      if (val >= 10000) {
+        *l = snprintf(*s, sizeof *s, "+%lld", val);
+        return *s;
+      }
+      width = 4;
+      goto number;
+    case 'z':
+      if (tm->tm_isdst < 0) {
+        *l = 0;
+        return "";
+      }
+      *l = snprintf(*s, sizeof *s, "%+.2d%.2d", (tm->__tm_gmtoff) / 3600,
+                    abs(tm->__tm_gmtoff % 3600) / 60);
+      return *s;
+    case 'Z':
+      if (tm->tm_isdst < 0) {
+        *l = 0;
+        return "";
+      }
+      fmt = __tm_to_tzname(tm);
+      goto string;
+    case '%':
+      *l = 1;
+      return "%";
+    default:
+      return 0;
+  }
 number:
-        *l = snprintf(*s, sizeof *s, "%0*lld", width, val);
-        return *s;
+  *l = snprintf(*s, sizeof *s, "%0*lld", width, val);
+  return *s;
 nl_strcat:
-        fmt = __nl_langinfo_l(item, loc);
+  fmt = __nl_langinfo_l(item, loc);
 string:
-        *l = strlen(fmt);
-        return fmt;
+  *l = strlen(fmt);
+  return fmt;
 nl_strftime:
-        fmt = __nl_langinfo_l(item, loc);
+  fmt = __nl_langinfo_l(item, loc);
 recu_strftime:
-        *l = __strftime_l(*s, sizeof *s, fmt, tm, loc);
-        if (!*l) return 0;
-        return *s;
-}
-
-size_t __strftime_l(char *restrict s, size_t n, const char *restrict f, const struct tm *restrict tm, locale_t loc)
-{
-        size_t l, k;
-        char buf[100];
-        char *p;
-        const char *t;
-        int plus;
-        unsigned long width;
-        for (l=0; l<n; f++) {
-                if (!*f) {
-                        s[l] = 0;
-                        return l;
-                }
-                if (*f != '%') {
-                        s[l++] = *f;
-                        continue;
-                }
-                f++;
-                if ((plus = (*f == '+'))) f++;
-                width = strtoul(f, &p, 10);
-                if (*p == 'C' || *p == 'F' || *p == 'G' || *p == 'Y') {
-                        if (!width && p!=f) width = 1;
-                } else {
-                        width = 0;
-                }
-                f = p;
-                if (*f == 'E' || *f == 'O') f++;
-                t = __strftime_fmt_1(&buf, &k, *f, tm, loc);
-                if (!t) break;
-                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++;
-                        for (; width > k && l < n; width--)
-                                s[l++] = '0';
-                }
-                if (k > n-l) k = n-l;
-                memcpy(s+l, t, k);
-                l += k;
-        }
-        if (n) {
-                if (l==n) l=n-1;
-                s[l] = 0;
-        }
-        return 0;
-}
-
-size_t strftime(char *restrict s, size_t n, const char *restrict f, const struct tm *restrict tm)
-{
-        return __strftime_l(s, n, f, tm, CURRENT_LOCALE);
+  *l = __strftime_l(*s, sizeof *s, fmt, tm, loc);
+  if (!*l)
+    return 0;
+  return *s;
+}
+
+size_t __strftime_l(char* restrict s,
+                    size_t n,
+                    const char* restrict f,
+                    const struct tm* restrict tm,
+                    locale_t loc) {
+  size_t l, k;
+  char buf[100];
+  char* p;
+  const char* t;
+  int plus;
+  unsigned long width;
+  for (l = 0; l < n; f++) {
+    if (!*f) {
+      s[l] = 0;
+      return l;
+    }
+    if (*f != '%') {
+      s[l++] = *f;
+      continue;
+    }
+    f++;
+    if ((plus = (*f == '+')))
+      f++;
+    width = strtoul(f, &p, 10);
+    if (*p == 'C' || *p == 'F' || *p == 'G' || *p == 'Y') {
+      if (!width && p != f)
+        width = 1;
+    } else {
+      width = 0;
+    }
+    f = p;
+    if (*f == 'E' || *f == 'O')
+      f++;
+    t = __strftime_fmt_1(&buf, &k, *f, tm, loc);
+    if (!t)
+      break;
+    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++;
+      for (; width > k && l < n; width--)
+        s[l++] = '0';
+    }
+    if (k > n - l)
+      k = n - l;
+    memcpy(s + l, t, k);
+    l += k;
+  }
+  if (n) {
+    if (l == n)
+      l = n - 1;
+    s[l] = 0;
+  }
+  return 0;
+}
+
+size_t strftime(char* restrict s,
+                size_t n,
+                const char* restrict f,
+                const struct tm* restrict tm) {
+  return __strftime_l(s, n, f, tm, CURRENT_LOCALE);
 }
 
 weak_alias(__strftime_l, strftime_l);