1  /* Test restarting behaviour of wcrtomb.
       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, bufexp) \
      25    {									\
      26      size_t res = expr;							\
      27      printf (#expr " -> %zu", res);					\
      28      dst += res;								\
      29      printf (", dst = buf+%td", dst - (char *) buf);			\
      30      if (res != nexp || dst != (char *) (bufexp))			\
      31        {									\
      32  	printf (", expected %zu and buf+%td", (size_t) nexp,		\
      33  		(bufexp) - (unsigned char *) buf);			\
      34  	result = 1;							\
      35        }									\
      36      putc ('\n', stdout);						\
      37    }
      38  
      39  static int
      40  do_test (void)
      41  {
      42    unsigned char buf[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
      43    const unsigned char bufcheck[7] = { 0x25, 0xe2, 0x82, 0xac, 0xce, 0xbb, 0 };
      44    const wchar_t srcbuf[4] = { 0x25, 0x20ac, 0x03bb, 0 };
      45    mbstate_t state;
      46    const wchar_t *src;
      47    char *dst;
      48    int result = 0;
      49    const char *used_locale;
      50  
      51    setlocale (LC_CTYPE, "de_DE.UTF-8");
      52    /* Double check.  */
      53    used_locale = setlocale (LC_CTYPE, NULL);
      54    printf ("used locale: \"%s\"\n", used_locale);
      55    result = strcmp (used_locale, "de_DE.UTF-8");
      56  
      57    memset (&state, '\0', sizeof (state));
      58  
      59    src = srcbuf;
      60    dst = (char *) buf;
      61    show (wcrtomb (dst, *src++, &state), 1, buf + 1);
      62    show (wcrtomb (dst, *src++, &state), 3, buf + 4);
      63    show (wcrtomb (dst, *src++, &state), 2, buf + 6);
      64    show (wcrtomb (dst, *src, &state), 1, buf + 7);
      65  
      66    if (memcmp (buf, bufcheck, 7))
      67      {
      68        puts ("wrong results");
      69        result = 1;
      70      }
      71  
      72    return result;
      73  }
      74  
      75  #define TEST_FUNCTION do_test ()
      76  #include "../test-skeleton.c"