localedata/tst-mbswcs1.c

   1 /* Test restarting behaviour of mbrtowc.
   2    Copyright (C) 2000-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <stdio.h>
  20 #include <string.h>
  21 #include <wchar.h>
  22 #include <locale.h>
  23
  24 #define show(expr, nexp, wcexp) \
  25   n = expr;                                                               \
  26   printf (#expr " -> %zu", n);                                            \
  27   printf (", wc = %lu", (unsigned long int) wc);                          \
  28   if (n != (size_t) nexp || wc != wcexp)                                  \
  29     {                                                                     \
  30       printf (", expected %zu and %lu", (size_t) nexp,                    \
  31               (unsigned long int) wcexp);                                 \
  32       result = 1;                                                         \
  33     }                                                                     \
  34   putc ('\n', stdout)
  35
  36 static int
  37 do_test (void)
  38 {
  39   const unsigned char buf[6] = { 0x25,  0xe2, 0x82, 0xac,  0xce, 0xbb };
  40   mbstate_t state;
  41   wchar_t wc = 42;
  42   size_t n;
  43   int result = 0;
  44   const char *used_locale;
  45
  46   setlocale (LC_CTYPE, "de_DE.UTF-8");
  47   /* Double check.  */
  48   used_locale = setlocale (LC_CTYPE, NULL);
  49   printf ("used locale: \"%s\"\n", used_locale);
  50   result = strcmp (used_locale, "de_DE.UTF-8");
  51
  52   memset (&state, '\0', sizeof (state));
  53
  54   show (mbrtowc (&wc, (const char *) buf + 0, 1, &state), 1, 37);
  55   show (mbrtowc (&wc, (const char *) buf + 1, 1, &state), -2, 37);
  56   show (mbrtowc (&wc, (const char *) buf + 2, 3, &state), 2, 8364);
  57   show (mbrtowc (&wc, (const char *) buf + 4, 1, &state), -2, 8364);
  58   show (mbrtowc (&wc, (const char *) buf + 5, 1, &state), 1, 955);
  59   show (mbrtowc (&wc, (const char *) buf + 5, 1, &state), -1, 955);
  60
  61   return result;
  62 }
  63
  64 #define TEST_FUNCTION do_test ()
  65 #include "../test-skeleton.c"