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2964 need POSIX 2008 locale object support
Reviewed by: Robert Mustacchi <rm@joyent.com>
   1 /*

   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright (c) 1989 The Regents of the University of California.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms are permitted
   7  * provided that the above copyright notice and this paragraph are
   8  * duplicated in all such forms and that any documentation,
   9  * advertising materials, and other materials related to such
  10  * distribution and use acknowledge that the software was developed
  11  * by the University of California, Berkeley. The name of the
  12  * University may not be used to endorse or promote products derived
  13  * from this software without specific prior written permission.
  14  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  */
  18 
  19 #include "lint.h"
  20 #include "tzfile.h"
  21 #include <fcntl.h>
  22 #include <sys/stat.h>
  23 #include <string.h>
  24 #include <stdio.h>

  25 #include "timelocal.h"

  26 
  27 static char *_add(const char *, char *, const char *);
  28 static char *_conv(int, const char *, char *, const char *);
  29 static char *_fmt(const char *, const struct tm *, char *, const char * const);

  30 static char *_yconv(int, int, int, int, char *, const char *);
  31 
  32 extern char *tzname[];
  33 
  34 #define IN_NONE 0
  35 #define IN_SOME 1
  36 #define IN_THIS 2
  37 #define IN_ALL  3
  38 
  39 #define PAD_DEFAULT     0
  40 #define PAD_LESS        1
  41 #define PAD_SPACE       2
  42 #define PAD_ZERO        3
  43 
  44 static const char *fmt_padding[][4] = {
  45         /* DEFAULT,     LESS,   SPACE,  ZERO */
  46 #define PAD_FMT_MONTHDAY        0
  47 #define PAD_FMT_HMS             0
  48 #define PAD_FMT_CENTURY         0
  49 #define PAD_FMT_SHORTYEAR       0
  50 #define PAD_FMT_MONTH           0
  51 #define PAD_FMT_WEEKOFYEAR      0
  52 #define PAD_FMT_DAYOFMONTH      0
  53         { "%02d",       "%d",   "%2d",  "%02d" },
  54 #define PAD_FMT_SDAYOFMONTH     1
  55 #define PAD_FMT_SHMS            1
  56         { "%2d",        "%d",   "%2d",  "%02d" },
  57 #define PAD_FMT_DAYOFYEAR       2
  58         { "%03d",       "%d",   "%3d",  "%03d" },
  59 #define PAD_FMT_YEAR            3
  60         { "%04d",       "%d",   "%4d",  "%04d" }
  61 };
  62 
  63 
  64 size_t
  65 strftime(char *_RESTRICT_KYWD s, size_t maxsize,
  66     const char *_RESTRICT_KYWD format, const struct tm *_RESTRICT_KYWD t)

  67 {
  68         char *p;
  69 
  70         tzset();
  71         p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize);
  72         if (p == s + maxsize)
  73                 return (0);
  74         *p = '\0';
  75         return (p - s);
  76 }
  77 







  78 static char *
  79 _fmt(const char *format, const struct tm *t, char *pt, const char * const ptlim)

  80 {
  81         int Ealternative, Oalternative, PadIndex;
  82         struct lc_time_T *tptr = __get_current_time_locale();
  83 
  84 #define PADDING(x)      fmt_padding[x][PadIndex]
  85 
  86         for (; *format; ++format) {
  87                 if (*format == '%') {
  88                         Ealternative = 0;
  89                         Oalternative = 0;
  90                         PadIndex         = PAD_DEFAULT;
  91 label:
  92                         switch (*++format) {
  93                         case '\0':
  94                                 --format;
  95                                 break;
  96                         case 'A':
  97                                 pt = _add((t->tm_wday < 0 ||
  98                                     t->tm_wday >= DAYSPERWEEK) ?
  99                                     "?" : tptr->weekday[t->tm_wday],
 100                                     pt, ptlim);
 101                                 continue;
 102                         case 'a':


 113                                 continue;
 114                         case 'b':
 115                         case 'h':
 116                                 pt = _add((t->tm_mon < 0 ||
 117                                     t->tm_mon >= MONSPERYEAR) ?
 118                                     "?" : tptr->mon[t->tm_mon],
 119                                     pt, ptlim);
 120                                 continue;
 121                         case 'C':
 122                                 /*
 123                                  * %C used to do a...
 124                                  *      _fmt("%a %b %e %X %Y", t);
 125                                  * ...whereas now POSIX 1003.2 calls for
 126                                  * something completely different.
 127                                  * (ado, 1993-05-24)
 128                                  */
 129                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0,
 130                                     pt, ptlim);
 131                                 continue;
 132                         case 'c':
 133                                 pt = _fmt(tptr->c_fmt, t, pt, ptlim);
 134                                 continue;
 135                         case 'D':
 136                                 pt = _fmt("%m/%d/%y", t, pt, ptlim);
 137                                 continue;
 138                         case 'd':
 139                                 pt = _conv(t->tm_mday,
 140                                     PADDING(PAD_FMT_DAYOFMONTH), pt, ptlim);
 141                                 continue;
 142                         case 'E':
 143                                 if (Ealternative || Oalternative)
 144                                         break;
 145                                 Ealternative++;
 146                                 goto label;
 147                         case 'O':
 148                                 /*
 149                                  * C99 locale modifiers.
 150                                  * The sequences
 151                                  *      %Ec %EC %Ex %EX %Ey %EY
 152                                  *      %Od %oe %OH %OI %Om %OM
 153                                  *      %OS %Ou %OU %OV %Ow %OW %Oy
 154                                  * are supposed to provide alternate
 155                                  * representations.
 156                                  */
 157                                 if (Ealternative || Oalternative)
 158                                         break;
 159                                 Oalternative++;
 160                                 goto label;
 161                         case 'e':
 162                                 pt = _conv(t->tm_mday,
 163                                     PADDING(PAD_FMT_SDAYOFMONTH), pt, ptlim);
 164                                 continue;
 165                         case 'F':
 166                                 pt = _fmt("%Y-%m-%d", t, pt, ptlim);
 167                                 continue;
 168                         case 'H':
 169                                 pt = _conv(t->tm_hour, PADDING(PAD_FMT_HMS),
 170                                     pt, ptlim);
 171                                 continue;
 172                         case 'I':
 173                                 pt = _conv((t->tm_hour % 12) ?
 174                                     (t->tm_hour % 12) : 12,
 175                                     PADDING(PAD_FMT_HMS), pt, ptlim);
 176                                 continue;
 177                         case 'j':
 178                                 pt = _conv(t->tm_yday + 1,
 179                                     PADDING(PAD_FMT_DAYOFYEAR), pt, ptlim);
 180                                 continue;
 181                         case 'k':
 182                                 /*
 183                                  * This used to be...
 184                                  *      _conv(t->tm_hour % 12 ?
 185                                  *              t->tm_hour % 12 : 12, 2, ' ');
 186                                  * ...and has been changed to the below to


 206                                     (t->tm_hour % 12) : 12,
 207                                     PADDING(PAD_FMT_SHMS), pt, ptlim);
 208                                 continue;
 209                         case 'M':
 210                                 pt = _conv(t->tm_min, PADDING(PAD_FMT_HMS),
 211                                     pt, ptlim);
 212                                 continue;
 213                         case 'm':
 214                                 pt = _conv(t->tm_mon + 1,
 215                                     PADDING(PAD_FMT_MONTH),
 216                                     pt, ptlim);
 217                                 continue;
 218                         case 'n':
 219                                 pt = _add("\n", pt, ptlim);
 220                                 continue;
 221                         case 'p':
 222                                 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
 223                                     tptr->pm : tptr->am, pt, ptlim);
 224                                 continue;
 225                         case 'R':
 226                                 pt = _fmt("%H:%M", t, pt, ptlim);
 227                                 continue;
 228                         case 'r':
 229                                 pt = _fmt(tptr->ampm_fmt, t, pt, ptlim);
 230                                 continue;
 231                         case 'S':
 232                                 pt = _conv(t->tm_sec, PADDING(PAD_FMT_HMS),
 233                                     pt, ptlim);
 234                                 continue;
 235 
 236                         case 's':
 237                         {
 238                                 struct tm tm;
 239                                 char *buf;
 240 
 241                                 tm = *t;
 242                                 (void) asprintf(&buf, "%ld", mktime(&tm));
 243                                 pt = _add(buf, pt, ptlim);
 244                                 continue;
 245                         }
 246 
 247                         case 'T':
 248                                 pt = _fmt("%H:%M:%S", t, pt, ptlim);
 249                                 continue;
 250                         case 't':
 251                                 pt = _add("\t", pt, ptlim);
 252                                 continue;
 253                         case 'U':
 254                                 pt = _conv((t->tm_yday + DAYSPERWEEK -
 255                                     t->tm_wday) / DAYSPERWEEK,
 256                                     PADDING(PAD_FMT_WEEKOFYEAR),
 257                                     pt, ptlim);
 258                                 continue;
 259                         case 'u':
 260                                 /*
 261                                  * From Arnold Robbins' strftime version 3.0:
 262                                  * "ISO 8601: Weekday as a decimal number
 263                                  * [1 (Monday) - 7]"
 264                                  * (ado, 1993-05-24)
 265                                  */
 266                                 pt = _conv((t->tm_wday == 0) ?
 267                                     DAYSPERWEEK : t->tm_wday,
 268                                     "%d", pt, ptlim);


 340                                         w = 53;
 341 #endif /* defined XPG4_1994_04_09 */
 342                                 if (*format == 'V')
 343                                         pt = _conv(w,
 344                                             PADDING(PAD_FMT_WEEKOFYEAR),
 345                                             pt, ptlim);
 346                                 else if (*format == 'g') {
 347                                         pt = _yconv(year, base, 0, 1,
 348                                             pt, ptlim);
 349                                 } else
 350                                         pt = _yconv(year, base, 1, 1,
 351                                             pt, ptlim);
 352                         }
 353                                 continue;
 354                         case 'v':
 355                                 /*
 356                                  * From Arnold Robbins' strftime version 3.0:
 357                                  * "date as dd-bbb-YYYY"
 358                                  * (ado, 1993-05-24)
 359                                  */
 360                                 pt = _fmt("%e-%b-%Y", t, pt, ptlim);
 361                                 continue;
 362                         case 'W':
 363                                 pt = _conv((t->tm_yday + DAYSPERWEEK -
 364                                     (t->tm_wday ?
 365                                     (t->tm_wday - 1) :
 366                                     (DAYSPERWEEK - 1))) / DAYSPERWEEK,
 367                                     PADDING(PAD_FMT_WEEKOFYEAR),
 368                                     pt, ptlim);
 369                                 continue;
 370                         case 'w':
 371                                 pt = _conv(t->tm_wday, "%d", pt, ptlim);
 372                                 continue;
 373                         case 'X':
 374                                 pt = _fmt(tptr->X_fmt, t, pt, ptlim);
 375                                 continue;
 376                         case 'x':
 377                                 pt = _fmt(tptr->x_fmt, t, pt, ptlim);
 378                                 continue;
 379                         case 'y':
 380                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1,
 381                                     pt, ptlim);
 382                                 continue;
 383                         case 'Y':
 384                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1,
 385                                     pt, ptlim);
 386                                 continue;
 387                         case 'Z':
 388                                 if (t->tm_isdst >= 0)
 389                                         pt = _add(tzname[t->tm_isdst != 0],
 390                                             pt, ptlim);
 391                                 /*
 392                                  * C99 says that %Z must be replaced by the
 393                                  * empty string if the time zone is not
 394                                  * determinable.
 395                                  */
 396                                 continue;
 397                         case 'z':


 421                                  * appropriate variables are not available.
 422                                  */
 423                                 if (t->tm_isdst == 0)
 424                                         diff = -timezone;
 425                                 else
 426                                         diff = -altzone;
 427                                 if (diff < 0) {
 428                                         sign = "-";
 429                                         diff = -diff;
 430                                 } else
 431                                         sign = "+";
 432                                 pt = _add(sign, pt, ptlim);
 433                                 diff /= SECSPERMIN;
 434                                 diff = (diff / MINSPERHOUR) * 100 +
 435                                     (diff % MINSPERHOUR);
 436                                 pt = _conv(diff, PADDING(PAD_FMT_YEAR),
 437                                     pt, ptlim);
 438                                 }
 439                                 continue;
 440                         case '+':
 441                                 pt = _fmt(tptr->date_fmt, t, pt, ptlim);
 442                                 continue;
 443                         case '-':
 444                                 if (PadIndex != PAD_DEFAULT)
 445                                         break;
 446                                 PadIndex = PAD_LESS;
 447                                 goto label;
 448                         case '_':
 449                                 if (PadIndex != PAD_DEFAULT)
 450                                         break;
 451                                 PadIndex = PAD_SPACE;
 452                                 goto label;
 453                         case '0':
 454                                 if (PadIndex != PAD_DEFAULT)
 455                                         break;
 456                                 PadIndex = PAD_ZERO;
 457                                 goto label;
 458                         case '%':
 459                         /*
 460                          * X311J/88-090 (4.12.3.5): if conversion char is
 461                          * undefined, behavior is undefined. Print out the


   1 /*
   2  * Copyright 2013 Garrett D'Amore <garrett@damore.org>
   3  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   4  * Copyright (c) 1989 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms are permitted
   8  * provided that the above copyright notice and this paragraph are
   9  * duplicated in all such forms and that any documentation,
  10  * advertising materials, and other materials related to such
  11  * distribution and use acknowledge that the software was developed
  12  * by the University of California, Berkeley. The name of the
  13  * University may not be used to endorse or promote products derived
  14  * from this software without specific prior written permission.
  15  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  18  */
  19 
  20 #include "lint.h"
  21 #include "tzfile.h"
  22 #include <fcntl.h>
  23 #include <sys/stat.h>
  24 #include <string.h>
  25 #include <stdio.h>
  26 #include <locale.h>
  27 #include "timelocal.h"
  28 #include "localeimpl.h"
  29 
  30 static char *_add(const char *, char *, const char *);
  31 static char *_conv(int, const char *, char *, const char *);
  32 static char *_fmt(locale_t, const char *, const struct tm *, char *,
  33     const char * const);
  34 static char *_yconv(int, int, int, int, char *, const char *);
  35 
  36 extern char *tzname[];
  37 
  38 #define IN_NONE 0
  39 #define IN_SOME 1
  40 #define IN_THIS 2
  41 #define IN_ALL  3
  42 
  43 #define PAD_DEFAULT     0
  44 #define PAD_LESS        1
  45 #define PAD_SPACE       2
  46 #define PAD_ZERO        3
  47 
  48 static const char *fmt_padding[][4] = {
  49         /* DEFAULT,     LESS,   SPACE,  ZERO */
  50 #define PAD_FMT_MONTHDAY        0
  51 #define PAD_FMT_HMS             0
  52 #define PAD_FMT_CENTURY         0
  53 #define PAD_FMT_SHORTYEAR       0
  54 #define PAD_FMT_MONTH           0
  55 #define PAD_FMT_WEEKOFYEAR      0
  56 #define PAD_FMT_DAYOFMONTH      0
  57         { "%02d",       "%d",   "%2d",  "%02d" },
  58 #define PAD_FMT_SDAYOFMONTH     1
  59 #define PAD_FMT_SHMS            1
  60         { "%2d",        "%d",   "%2d",  "%02d" },
  61 #define PAD_FMT_DAYOFYEAR       2
  62         { "%03d",       "%d",   "%3d",  "%03d" },
  63 #define PAD_FMT_YEAR            3
  64         { "%04d",       "%d",   "%4d",  "%04d" }
  65 };
  66 
  67 
  68 size_t
  69 strftime_l(char *_RESTRICT_KYWD s, size_t maxsize,
  70     const char *_RESTRICT_KYWD format, const struct tm *_RESTRICT_KYWD t,
  71     locale_t loc)
  72 {
  73         char *p;
  74 
  75         tzset();
  76         p = _fmt(loc, ((format == NULL) ? "%c" : format), t, s, s + maxsize);
  77         if (p == s + maxsize)
  78                 return (0);
  79         *p = '\0';
  80         return (p - s);
  81 }
  82 
  83 size_t
  84 strftime(char *_RESTRICT_KYWD s, size_t maxsize,
  85     const char *_RESTRICT_KYWD format, const struct tm *_RESTRICT_KYWD t)
  86 {
  87         return (strftime_l(s, maxsize, format, t, uselocale(NULL)));
  88 }
  89 
  90 static char *
  91 _fmt(locale_t loc, const char *format, const struct tm *t, char *pt,
  92     const char * const ptlim)
  93 {
  94         int Ealternative, Oalternative, PadIndex;
  95         const struct lc_time *tptr = loc->time;
  96 
  97 #define PADDING(x)      fmt_padding[x][PadIndex]
  98 
  99         for (; *format; ++format) {
 100                 if (*format == '%') {
 101                         Ealternative = 0;
 102                         Oalternative = 0;
 103                         PadIndex         = PAD_DEFAULT;
 104 label:
 105                         switch (*++format) {
 106                         case '\0':
 107                                 --format;
 108                                 break;
 109                         case 'A':
 110                                 pt = _add((t->tm_wday < 0 ||
 111                                     t->tm_wday >= DAYSPERWEEK) ?
 112                                     "?" : tptr->weekday[t->tm_wday],
 113                                     pt, ptlim);
 114                                 continue;
 115                         case 'a':


 126                                 continue;
 127                         case 'b':
 128                         case 'h':
 129                                 pt = _add((t->tm_mon < 0 ||
 130                                     t->tm_mon >= MONSPERYEAR) ?
 131                                     "?" : tptr->mon[t->tm_mon],
 132                                     pt, ptlim);
 133                                 continue;
 134                         case 'C':
 135                                 /*
 136                                  * %C used to do a...
 137                                  *      _fmt("%a %b %e %X %Y", t);
 138                                  * ...whereas now POSIX 1003.2 calls for
 139                                  * something completely different.
 140                                  * (ado, 1993-05-24)
 141                                  */
 142                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0,
 143                                     pt, ptlim);
 144                                 continue;
 145                         case 'c':
 146                                 pt = _fmt(loc, tptr->c_fmt, t, pt, ptlim);
 147                                 continue;
 148                         case 'D':
 149                                 pt = _fmt(loc, "%m/%d/%y", t, pt, ptlim);
 150                                 continue;
 151                         case 'd':
 152                                 pt = _conv(t->tm_mday,
 153                                     PADDING(PAD_FMT_DAYOFMONTH), pt, ptlim);
 154                                 continue;
 155                         case 'E':
 156                                 if (Ealternative || Oalternative)
 157                                         break;
 158                                 Ealternative++;
 159                                 goto label;
 160                         case 'O':
 161                                 /*
 162                                  * C99 locale modifiers.
 163                                  * The sequences
 164                                  *      %Ec %EC %Ex %EX %Ey %EY
 165                                  *      %Od %oe %OH %OI %Om %OM
 166                                  *      %OS %Ou %OU %OV %Ow %OW %Oy
 167                                  * are supposed to provide alternate
 168                                  * representations.
 169                                  */
 170                                 if (Ealternative || Oalternative)
 171                                         break;
 172                                 Oalternative++;
 173                                 goto label;
 174                         case 'e':
 175                                 pt = _conv(t->tm_mday,
 176                                     PADDING(PAD_FMT_SDAYOFMONTH), pt, ptlim);
 177                                 continue;
 178                         case 'F':
 179                                 pt = _fmt(loc, "%Y-%m-%d", t, pt, ptlim);
 180                                 continue;
 181                         case 'H':
 182                                 pt = _conv(t->tm_hour, PADDING(PAD_FMT_HMS),
 183                                     pt, ptlim);
 184                                 continue;
 185                         case 'I':
 186                                 pt = _conv((t->tm_hour % 12) ?
 187                                     (t->tm_hour % 12) : 12,
 188                                     PADDING(PAD_FMT_HMS), pt, ptlim);
 189                                 continue;
 190                         case 'j':
 191                                 pt = _conv(t->tm_yday + 1,
 192                                     PADDING(PAD_FMT_DAYOFYEAR), pt, ptlim);
 193                                 continue;
 194                         case 'k':
 195                                 /*
 196                                  * This used to be...
 197                                  *      _conv(t->tm_hour % 12 ?
 198                                  *              t->tm_hour % 12 : 12, 2, ' ');
 199                                  * ...and has been changed to the below to


 219                                     (t->tm_hour % 12) : 12,
 220                                     PADDING(PAD_FMT_SHMS), pt, ptlim);
 221                                 continue;
 222                         case 'M':
 223                                 pt = _conv(t->tm_min, PADDING(PAD_FMT_HMS),
 224                                     pt, ptlim);
 225                                 continue;
 226                         case 'm':
 227                                 pt = _conv(t->tm_mon + 1,
 228                                     PADDING(PAD_FMT_MONTH),
 229                                     pt, ptlim);
 230                                 continue;
 231                         case 'n':
 232                                 pt = _add("\n", pt, ptlim);
 233                                 continue;
 234                         case 'p':
 235                                 pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
 236                                     tptr->pm : tptr->am, pt, ptlim);
 237                                 continue;
 238                         case 'R':
 239                                 pt = _fmt(loc, "%H:%M", t, pt, ptlim);
 240                                 continue;
 241                         case 'r':
 242                                 pt = _fmt(loc, tptr->ampm_fmt, t, pt, ptlim);
 243                                 continue;
 244                         case 'S':
 245                                 pt = _conv(t->tm_sec, PADDING(PAD_FMT_HMS),
 246                                     pt, ptlim);
 247                                 continue;
 248 
 249                         case 's':
 250                         {
 251                                 struct tm tm;
 252                                 char *buf;
 253 
 254                                 tm = *t;
 255                                 (void) asprintf(&buf, "%ld", mktime(&tm));
 256                                 pt = _add(buf, pt, ptlim);
 257                                 continue;
 258                         }
 259 
 260                         case 'T':
 261                                 pt = _fmt(loc, "%H:%M:%S", t, pt, ptlim);
 262                                 continue;
 263                         case 't':
 264                                 pt = _add("\t", pt, ptlim);
 265                                 continue;
 266                         case 'U':
 267                                 pt = _conv((t->tm_yday + DAYSPERWEEK -
 268                                     t->tm_wday) / DAYSPERWEEK,
 269                                     PADDING(PAD_FMT_WEEKOFYEAR),
 270                                     pt, ptlim);
 271                                 continue;
 272                         case 'u':
 273                                 /*
 274                                  * From Arnold Robbins' strftime version 3.0:
 275                                  * "ISO 8601: Weekday as a decimal number
 276                                  * [1 (Monday) - 7]"
 277                                  * (ado, 1993-05-24)
 278                                  */
 279                                 pt = _conv((t->tm_wday == 0) ?
 280                                     DAYSPERWEEK : t->tm_wday,
 281                                     "%d", pt, ptlim);


 353                                         w = 53;
 354 #endif /* defined XPG4_1994_04_09 */
 355                                 if (*format == 'V')
 356                                         pt = _conv(w,
 357                                             PADDING(PAD_FMT_WEEKOFYEAR),
 358                                             pt, ptlim);
 359                                 else if (*format == 'g') {
 360                                         pt = _yconv(year, base, 0, 1,
 361                                             pt, ptlim);
 362                                 } else
 363                                         pt = _yconv(year, base, 1, 1,
 364                                             pt, ptlim);
 365                         }
 366                                 continue;
 367                         case 'v':
 368                                 /*
 369                                  * From Arnold Robbins' strftime version 3.0:
 370                                  * "date as dd-bbb-YYYY"
 371                                  * (ado, 1993-05-24)
 372                                  */
 373                                 pt = _fmt(loc, "%e-%b-%Y", t, pt, ptlim);
 374                                 continue;
 375                         case 'W':
 376                                 pt = _conv((t->tm_yday + DAYSPERWEEK -
 377                                     (t->tm_wday ?
 378                                     (t->tm_wday - 1) :
 379                                     (DAYSPERWEEK - 1))) / DAYSPERWEEK,
 380                                     PADDING(PAD_FMT_WEEKOFYEAR),
 381                                     pt, ptlim);
 382                                 continue;
 383                         case 'w':
 384                                 pt = _conv(t->tm_wday, "%d", pt, ptlim);
 385                                 continue;
 386                         case 'X':
 387                                 pt = _fmt(loc, tptr->X_fmt, t, pt, ptlim);
 388                                 continue;
 389                         case 'x':
 390                                 pt = _fmt(loc, tptr->x_fmt, t, pt, ptlim);
 391                                 continue;
 392                         case 'y':
 393                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1,
 394                                     pt, ptlim);
 395                                 continue;
 396                         case 'Y':
 397                                 pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1,
 398                                     pt, ptlim);
 399                                 continue;
 400                         case 'Z':
 401                                 if (t->tm_isdst >= 0)
 402                                         pt = _add(tzname[t->tm_isdst != 0],
 403                                             pt, ptlim);
 404                                 /*
 405                                  * C99 says that %Z must be replaced by the
 406                                  * empty string if the time zone is not
 407                                  * determinable.
 408                                  */
 409                                 continue;
 410                         case 'z':


 434                                  * appropriate variables are not available.
 435                                  */
 436                                 if (t->tm_isdst == 0)
 437                                         diff = -timezone;
 438                                 else
 439                                         diff = -altzone;
 440                                 if (diff < 0) {
 441                                         sign = "-";
 442                                         diff = -diff;
 443                                 } else
 444                                         sign = "+";
 445                                 pt = _add(sign, pt, ptlim);
 446                                 diff /= SECSPERMIN;
 447                                 diff = (diff / MINSPERHOUR) * 100 +
 448                                     (diff % MINSPERHOUR);
 449                                 pt = _conv(diff, PADDING(PAD_FMT_YEAR),
 450                                     pt, ptlim);
 451                                 }
 452                                 continue;
 453                         case '+':
 454                                 pt = _fmt(loc, tptr->date_fmt, t, pt, ptlim);
 455                                 continue;
 456                         case '-':
 457                                 if (PadIndex != PAD_DEFAULT)
 458                                         break;
 459                                 PadIndex = PAD_LESS;
 460                                 goto label;
 461                         case '_':
 462                                 if (PadIndex != PAD_DEFAULT)
 463                                         break;
 464                                 PadIndex = PAD_SPACE;
 465                                 goto label;
 466                         case '0':
 467                                 if (PadIndex != PAD_DEFAULT)
 468                                         break;
 469                                 PadIndex = PAD_ZERO;
 470                                 goto label;
 471                         case '%':
 472                         /*
 473                          * X311J/88-090 (4.12.3.5): if conversion char is
 474                          * undefined, behavior is undefined. Print out the