tests/test-vasnprintf-posix3.c

   1 /* Test of POSIX compatible vasnprintf() and asnprintf() functions.
   2    Copyright (C) 2010-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
  18
  19 #include <config.h>
  20
  21 #include "vasnprintf.h"
  22
  23 #include <locale.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "macros.h"
  28
  29 /* glibc >= 2.2 supports the 'I' flag, and in glibc >= 2.2.3 the fa_IR
  30    locale defines the 'outdigits' to be U+06F0..U+06F9.
  31    So we test for glibc >= 2.3.  */
  32 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__
  33
  34 static void
  35 test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
  36 {
  37   /* Test that the 'I' flag is supported.  */
  38   {
  39     size_t length;
  40     char *result =
  41       my_asnprintf (NULL, &length, "%Id %d", 1234567, 99);
  42     static const char expected[] = /* "۱۲۳۴۵۶۷ 99" */
  43       "\xDB\xB1\xDB\xB2\xDB\xB3\xDB\xB4\xDB\xB5\xDB\xB6\xDB\xB7 99";
  44     ASSERT (result != NULL);
  45     ASSERT (strcmp (result, expected) == 0);
  46     ASSERT (length == strlen (result));
  47     free (result);
  48   }
  49 }
  50
  51 static char *
  52 my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
  53 {
  54   va_list args;
  55   char *ret;
  56
  57   va_start (args, format);
  58   ret = vasnprintf (resultbuf, lengthp, format, args);
  59   va_end (args);
  60   return ret;
  61 }
  62
  63 static void
  64 test_vasnprintf ()
  65 {
  66   test_function (my_asnprintf);
  67 }
  68
  69 static void
  70 test_asnprintf ()
  71 {
  72   test_function (asnprintf);
  73 }
  74
  75 #endif
  76
  77 int
  78 main (int argc, char *argv[])
  79 {
  80 #if (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)) && !defined __UCLIBC__
  81   /* Select a locale with Arabic 'outdigits'.  */
  82   if (setlocale (LC_ALL, "fa_IR.UTF-8") == NULL)
  83     {
  84       fprintf (stderr, "Skipping test: no Iranian locale is installed\n");
  85       return 77;
  86     }
  87
  88   test_vasnprintf ();
  89   test_asnprintf ();
  90
  91   return test_exit_status;
  92 #else
  93   fprintf (stderr, "Skipping test: not a glibc >= 2.3 system\n");
  94   return 77;
  95 #endif
  96 }