localedata/tst-mbswcs3.c

   1 /* Test restarting behaviour of wcsrtombs.
   2    Copyright (C) 2000-2024 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, srcexp, bufexp) \
  25   {                                                                     \
  26     size_t res = expr;                                                  \
  27     printf (#expr " -> %zu", res);                                      \
  28     dst += res;                                                         \
  29     printf (", src = srcbuf+%td, dst = buf+%td",                        \
  30             src - srcbuf, dst - (char *) buf);                          \
  31     if (res != nexp || src != (srcexp) || dst != (char *) (bufexp))     \
  32       {                                                                 \
  33         printf (", expected %zu and srcbuf+%td and buf+%td", (size_t) nexp, \
  34                 (srcexp) - srcbuf, (bufexp) - (unsigned char *) buf);   \
  35         result = 1;                                                     \
  36       }                                                                 \
  37     putc ('\n', stdout);                                                \
  38   }
  39
  40 static int
  41 do_test (void)
  42 {
  43   unsigned char buf[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
  44   const unsigned char bufcheck[6] = { 0x25, 0xe2, 0x82, 0xac, 0xce, 0xbb };
  45   const wchar_t srcbuf[4] = { 0x25, 0x20ac, 0x03bb, 0 };
  46   mbstate_t state;
  47   const wchar_t *src;
  48   char *dst;
  49   int result = 0;
  50   const char *used_locale;
  51
  52   setlocale (LC_CTYPE, "de_DE.UTF-8");
  53   /* Double check.  */
  54   used_locale = setlocale (LC_CTYPE, NULL);
  55   printf ("used locale: \"%s\"\n", used_locale);
  56   result = strcmp (used_locale, "de_DE.UTF-8");
  57
  58   memset (&state, '\0', sizeof (state));
  59
  60   src = srcbuf;
  61   dst = (char *) buf;
  62   show (wcsrtombs (dst, &src, 1, &state), 1, srcbuf + 1, buf + 1);
  63   show (wcsrtombs (dst, &src, 1, &state), 0, srcbuf + 1, buf + 1);
  64   show (wcsrtombs (dst, &src, 4, &state), 3, srcbuf + 2, buf + 4);
  65   show (wcsrtombs (dst, &src, 2, &state), 2, srcbuf + 3, buf + 6);
  66
  67   if (memcmp (buf, bufcheck, 6))
  68     {
  69       puts ("wrong results");
  70       result = 1;
  71     }
  72
  73   return result;
  74 }
  75
  76 #define TEST_FUNCTION do_test ()
  77 #include "../test-skeleton.c"