time/tst-strftime2.c

   1 /* Verify the behavior of strftime on alternative representation for
   2    year.
   3
   4    Copyright (C) 2019-2024 Free Software Foundation, Inc.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <https://www.gnu.org/licenses/>.  */
  20
  21 #include <array_length.h>
  22 #include <stdbool.h>
  23 #include <support/check.h>
  24 #include <stdlib.h>
  25 #include <locale.h>
  26 #include <time.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29
  30 static const char *locales[] =
  31 {
  32   "ja_JP.UTF-8", "lo_LA.UTF-8", "th_TH.UTF-8",
  33   "zh_TW.UTF-8", "cmn_TW.UTF-8", "hak_TW.UTF-8",
  34   "nan_TW.UTF-8", "lzh_TW.UTF-8"
  35 };
  36
  37 /* Must match locale index into locales array.  */
  38 enum
  39 {
  40   ja_JP, lo_LA, th_TH,
  41   zh_TW, cmn_TW, hak_TW, nan_TW, lzh_TW
  42 };
  43
  44 static const char *formats[] = { "%EY", "%_EY", "%-EY" };
  45
  46 typedef struct
  47 {
  48   const int d, m, y;
  49 } date_t;
  50
  51 static const date_t dates[] =
  52 {
  53   {  1,  4, 1910 },
  54   { 31, 12, 1911 },
  55   {  1,  1, 1912 },
  56   {  1,  4, 1913 },
  57   {  1,  4, 1988 },
  58   {  7,  1, 1989 },
  59   {  8,  1, 1989 },
  60   {  1,  4, 1990 },
  61   {  1,  4, 1997 },
  62   {  1,  4, 1998 },
  63   {  1,  4, 2010 },
  64   {  1,  4, 2011 },
  65   { 30,  4, 2019 },
  66   {  1,  5, 2019 }
  67 };
  68
  69 static char ref[array_length (locales)][array_length (formats)]
  70                [array_length (dates)][100];
  71
  72 static bool
  73 is_before (const int i, const int d, const int m, const int y)
  74 {
  75   if (dates[i].y < y)
  76     return true;
  77   else if (dates[i].y > y)
  78     return false;
  79   else if (dates[i].m < m)
  80     return true;
  81   else if (dates[i].m > m)
  82     return false;
  83   else
  84     return dates[i].d < d;
  85 }
  86
  87 static void
  88 mkreftable (void)
  89 {
  90   int i, j, k, yr;
  91   const char *era, *sfx;
  92   /* Japanese era year to be checked.  */
  93   static const int yrj[] =
  94   {
  95     43, 44, 45, 2,
  96     63, 64, 1, 2, 9, 10, 22, 23, 31, 1
  97   };
  98   /* Buddhist calendar year to be checked.  */
  99   static const int yrb[] =
 100   {
 101     2453, 2454, 2455, 2456,
 102     2531, 2532, 2532, 2533, 2540, 2541, 2553, 2554, 2562, 2562
 103   };
 104   /* R.O.C. calendar year to be checked.  Negative number is prior to
 105      Minguo counting up.  */
 106   static const int yrc[] =
 107   {
 108     -2, -1, 1, 2,
 109     77, 78, 78, 79, 86, 87, 99, 100, 108, 108
 110   };
 111
 112   for (i = 0; i < array_length (locales); i++)
 113     for (j = 0; j < array_length (formats); j++)
 114       for (k = 0; k < array_length (dates); k++)
 115         {
 116           if (i == ja_JP)
 117             {
 118               era = (is_before (k, 30,  7, 1912)) ? "\u660e\u6cbb"
 119                   : (is_before (k, 25, 12, 1926)) ? "\u5927\u6b63"
 120                   : (is_before (k,  8,  1, 1989)) ? "\u662d\u548c"
 121                   : (is_before (k,  1,  5, 2019)) ? "\u5e73\u6210"
 122                                                   : "\u4ee4\u548c";
 123               yr = yrj[k], sfx = "\u5e74";
 124             }
 125           else if (i == lo_LA)
 126             era = "\u0e9e.\u0eaa. ", yr = yrb[k], sfx = "";
 127           else if (i == th_TH)
 128             era = "\u0e1e.\u0e28. ", yr = yrb[k], sfx = "";
 129           else if (i == zh_TW || i == cmn_TW || i == hak_TW
 130                    || i == nan_TW || i == lzh_TW)
 131             {
 132               era = (is_before (k, 1, 1, 1912)) ? "\u6c11\u524d"
 133                                                 : "\u6c11\u570b";
 134               yr = yrc[k], sfx = "\u5e74";
 135             }
 136           else
 137             FAIL_EXIT1 ("Invalid table index!");
 138           if (yr == 1)
 139             sprintf (ref[i][j][k], "%s\u5143%s", era, sfx);
 140           else if (j == 0)
 141             sprintf (ref[i][j][k], "%s%02d%s", era, abs (yr), sfx);
 142           else if (j == 1)
 143             sprintf (ref[i][j][k], "%s%2d%s", era, abs (yr), sfx);
 144           else if (j == 2)
 145             sprintf (ref[i][j][k], "%s%d%s", era, abs (yr), sfx);
 146           else
 147             FAIL_EXIT1 ("Invalid table index!");
 148         }
 149 }
 150
 151 static int
 152 do_test (void)
 153 {
 154   int i, j, k, result = 0;
 155   struct tm ttm;
 156   char date[11], buf[100];
 157   size_t r, e;
 158
 159   mkreftable ();
 160   for (i = 0; i < array_length (locales); i++)
 161     {
 162       if (setlocale (LC_ALL, locales[i]) == NULL)
 163         {
 164           printf ("locale %s does not exist, skipping...\n", locales[i]);
 165           continue;
 166         }
 167       printf ("[%s]\n", locales[i]);
 168       for (j = 0; j < array_length (formats); j++)
 169         {
 170           for (k = 0; k < array_length (dates); k++)
 171             {
 172               ttm.tm_mday = dates[k].d;
 173               ttm.tm_mon  = dates[k].m - 1;
 174               ttm.tm_year = dates[k].y - 1900;
 175               strftime (date, sizeof (date), "%F", &ttm);
 176               r = strftime (buf, sizeof (buf), formats[j], &ttm);
 177               e = strlen (ref[i][j][k]);
 178               printf ("%s\t\"%s\"\t\"%s\"", date, formats[j], buf);
 179               if (strcmp (buf, ref[i][j][k]) != 0)
 180                 {
 181                   printf ("\tshould be \"%s\"", ref[i][j][k]);
 182                   if (r != e)
 183                     printf ("\tgot: %zu, expected: %zu", r, e);
 184                   result = 1;
 185                 }
 186               else
 187                 printf ("\tOK");
 188               putchar ('\n');
 189             }
 190           putchar ('\n');
 191         }
 192     }
 193   return result;
 194 }
 195
 196 #include <support/test-driver.c>