localedata/tst-mbswcs2.c

   1 /* Test restarting behaviour of mbsnrtowcs.
   2    Copyright (C) 2000-2023 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, end) \
  25   n = expr;                                                             \
  26   printf (#expr " -> %zu", n);                                          \
  27   printf (", wc = %lu, src = buf+%td", (unsigned long int) wc,          \
  28           src - (const char *) buf);                                    \
  29   if (n != (size_t) nexp || wc != wcexp || src != (const char *) (end)) \
  30     {                                                                   \
  31       printf (", expected %zu and %lu and buf+%td", (size_t) nexp,      \
  32               (unsigned long int) wcexp, (end) - buf);                  \
  33       result = 1;                                                       \
  34     }                                                                   \
  35   putc ('\n', stdout)
  36
  37 static int
  38 do_test (void)
  39 {
  40   unsigned char buf[6] = { 0x25,  0xe2, 0x82, 0xac,  0xce, 0xbb };
  41   mbstate_t state;
  42   const char *src;
  43   wchar_t wc = 42;
  44   size_t n;
  45   int result = 0;
  46   const char *used_locale;
  47
  48   setlocale (LC_CTYPE,"de_DE.UTF-8");
  49   /* Double check.  */
  50   used_locale = setlocale (LC_CTYPE, NULL);
  51   printf ("used locale: \"%s\"\n", used_locale);
  52   result = strcmp (used_locale, "de_DE.UTF-8");
  53
  54   memset (&state, '\0', sizeof (state));
  55
  56   src = (const char *) buf;
  57   show (mbsnrtowcs (&wc, &src, 1, 1, &state), 1, 37, buf + 1);
  58   show (mbsnrtowcs (&wc, &src, 3, 1, &state), 1, 8364, buf + 4);
  59   show (mbsnrtowcs (&wc, &src, 1, 1, &state), 0, 8364, buf + 5);
  60   show (mbsnrtowcs (&wc, &src, 1, 1, &state), 1, 955, buf + 6);
  61
  62   return result;
  63 }
  64
  65 #define TEST_FUNCTION do_test ()
  66 #include "../test-skeleton.c"