tests/test-c32rtomb.c

   1 /* Test of conversion of wide character to multibyte character.
   2    Copyright (C) 2008-2025 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>, 2008.  */
  18
  19 #include <config.h>
  20
  21 #include <uchar.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (c32rtomb, size_t, (char *, char32_t, mbstate_t *));
  25
  26 #include <locale.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include "macros.h"
  31
  32 /* Check the multibyte character s[0..n-1].  */
  33 static void
  34 check_character (const char *s, size_t n)
  35 {
  36   mbstate_t state;
  37   char32_t wc;
  38   char buf[64];
  39   int iret;
  40   size_t ret;
  41
  42   memset (&state, '\0', sizeof (mbstate_t));
  43   wc = (char32_t) 0xBADFACE;
  44   iret = mbrtoc32 (&wc, s, n, &state);
  45   ASSERT (iret == n);
  46
  47   ret = c32rtomb (buf, wc, NULL);
  48   ASSERT (ret == n);
  49   ASSERT (memcmp (buf, s, n) == 0);
  50
  51   /* Test special calling convention, passing a NULL pointer.  */
  52   ret = c32rtomb (NULL, wc, NULL);
  53   ASSERT (ret == 1);
  54 }
  55
  56 int
  57 main (int argc, char *argv[])
  58 {
  59   char buf[64];
  60   size_t ret;
  61
  62   /* configure should already have checked that the locale is supported.  */
  63   if (setlocale (LC_ALL, "") == NULL)
  64     return 1;
  65
  66   /* Test NUL character.  */
  67   {
  68     buf[0] = 'x';
  69     ret = c32rtomb (buf, 0, NULL);
  70     ASSERT (ret == 1);
  71     ASSERT (buf[0] == '\0');
  72   }
  73
  74   /* Test single bytes.  */
  75   {
  76     int c;
  77
  78     for (c = 0; c < 0x100; c++)
  79       switch (c)
  80         {
  81         case '\t': case '\v': case '\f':
  82         case ' ': case '!': case '"': case '#': case '%':
  83         case '&': case '\'': case '(': case ')': case '*':
  84         case '+': case ',': case '-': case '.': case '/':
  85         case '0': case '1': case '2': case '3': case '4':
  86         case '5': case '6': case '7': case '8': case '9':
  87         case ':': case ';': case '<': case '=': case '>':
  88         case '?':
  89         case 'A': case 'B': case 'C': case 'D': case 'E':
  90         case 'F': case 'G': case 'H': case 'I': case 'J':
  91         case 'K': case 'L': case 'M': case 'N': case 'O':
  92         case 'P': case 'Q': case 'R': case 'S': case 'T':
  93         case 'U': case 'V': case 'W': case 'X': case 'Y':
  94         case 'Z':
  95         case '[': case '\\': case ']': case '^': case '_':
  96         case 'a': case 'b': case 'c': case 'd': case 'e':
  97         case 'f': case 'g': case 'h': case 'i': case 'j':
  98         case 'k': case 'l': case 'm': case 'n': case 'o':
  99         case 'p': case 'q': case 'r': case 's': case 't':
 100         case 'u': case 'v': case 'w': case 'x': case 'y':
 101         case 'z': case '{': case '|': case '}': case '~':
 102           /* c is in the ISO C "basic character set".  */
 103           ret = c32rtomb (buf, btoc32 (c), NULL);
 104           ASSERT (ret == 1);
 105           ASSERT (buf[0] == (char) c);
 106           break;
 107         }
 108   }
 109
 110   /* Test special calling convention, passing a NULL pointer.  */
 111   {
 112     ret = c32rtomb (NULL, '\0', NULL);
 113     ASSERT (ret == 1);
 114     ret = c32rtomb (NULL, btoc32 ('x'), NULL);
 115     ASSERT (ret == 1);
 116   }
 117
 118   if (argc > 1)
 119     switch (argv[1][0])
 120       {
 121       case '1':
 122         /* C locale; tested above.  */
 123         return test_exit_status;
 124
 125       case '2':
 126         /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
 127         {
 128           const char input[] = "B\374\337er"; /* "Büßer" */
 129
 130           check_character (input + 1, 1);
 131           check_character (input + 2, 1);
 132         }
 133         return test_exit_status;
 134
 135       case '3':
 136         /* Locale encoding is UTF-8.  */
 137         {
 138           const char input[] = "s\303\274\303\237\360\237\230\213!"; /* "süß😋!" */
 139
 140           check_character (input + 1, 2);
 141           check_character (input + 3, 2);
 142           check_character (input + 5, 4);
 143         }
 144         return test_exit_status;
 145
 146       case '4':
 147         /* Locale encoding is EUC-JP.  */
 148         {
 149           const char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
 150
 151           check_character (input + 1, 2);
 152           check_character (input + 3, 2);
 153           check_character (input + 5, 2);
 154         }
 155         return test_exit_status;
 156
 157       case '5':
 158         /* Locale encoding is GB18030.  */
 159         #if (defined __GLIBC__ && __GLIBC__ == 2 && __GLIBC_MINOR__ >= 13 && __GLIBC_MINOR__ <= 15) || (GL_CHAR32_T_IS_UNICODE && (defined __FreeBSD__ || defined __NetBSD__ || defined __sun))
 160         if (test_exit_status != EXIT_SUCCESS)
 161           return test_exit_status;
 162         fputs ("Skipping test: The GB18030 converter in this system's iconv is broken.\n", stderr);
 163         return 77;
 164         #endif
 165         {
 166           const char input[] = "s\250\271\201\060\211\070\224\071\375\067!"; /* "süß😋!" */
 167
 168           check_character (input + 1, 2);
 169           check_character (input + 3, 4);
 170           check_character (input + 7, 4);
 171         }
 172         return test_exit_status;
 173       }
 174
 175   return 1;
 176 }