tests/test-wcrtomb.c

   1 /* Test of conversion of wide character to multibyte character.
   2    Copyright (C) 2008-2024 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>, 2008.  */
  18
  19 #include <config.h>
  20
  21 #include <wchar.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (wcrtomb, size_t, (char *, wchar_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   wchar_t wc;
  37   char buf[64];
  38   int iret;
  39   size_t ret;
  40
  41   wc = (wchar_t) 0xBADFACE;
  42   iret = mbtowc (&wc, s, n);
  43   ASSERT (iret == n);
  44
  45   ret = wcrtomb (buf, wc, NULL);
  46   ASSERT (ret == n);
  47   ASSERT (memcmp (buf, s, n) == 0);
  48
  49   /* Test special calling convention, passing a NULL pointer.  */
  50   ret = wcrtomb (NULL, wc, NULL);
  51   ASSERT (ret == 1);
  52 }
  53
  54 int
  55 main (int argc, char *argv[])
  56 {
  57   char buf[64];
  58   size_t ret;
  59
  60   /* configure should already have checked that the locale is supported.  */
  61   if (setlocale (LC_ALL, "") == NULL)
  62     return 1;
  63
  64   /* Test NUL character.  */
  65   {
  66     buf[0] = 'x';
  67     ret = wcrtomb (buf, 0, NULL);
  68     ASSERT (ret == 1);
  69     ASSERT (buf[0] == '\0');
  70   }
  71
  72   /* Test single bytes.  */
  73   {
  74     int c;
  75
  76     for (c = 0; c < 0x100; c++)
  77       switch (c)
  78         {
  79         case '\t': case '\v': case '\f':
  80         case ' ': case '!': case '"': case '#': case '%':
  81         case '&': case '\'': case '(': case ')': case '*':
  82         case '+': case ',': case '-': case '.': case '/':
  83         case '0': case '1': case '2': case '3': case '4':
  84         case '5': case '6': case '7': case '8': case '9':
  85         case ':': case ';': case '<': case '=': case '>':
  86         case '?':
  87         case 'A': case 'B': case 'C': case 'D': case 'E':
  88         case 'F': case 'G': case 'H': case 'I': case 'J':
  89         case 'K': case 'L': case 'M': case 'N': case 'O':
  90         case 'P': case 'Q': case 'R': case 'S': case 'T':
  91         case 'U': case 'V': case 'W': case 'X': case 'Y':
  92         case 'Z':
  93         case '[': case '\\': case ']': case '^': case '_':
  94         case 'a': case 'b': case 'c': case 'd': case 'e':
  95         case 'f': case 'g': case 'h': case 'i': case 'j':
  96         case 'k': case 'l': case 'm': case 'n': case 'o':
  97         case 'p': case 'q': case 'r': case 's': case 't':
  98         case 'u': case 'v': case 'w': case 'x': case 'y':
  99         case 'z': case '{': case '|': case '}': case '~':
 100           /* c is in the ISO C "basic character set".  */
 101           ret = wcrtomb (buf, btowc (c), NULL);
 102           ASSERT (ret == 1);
 103           ASSERT (buf[0] == (char) c);
 104           break;
 105         }
 106   }
 107
 108   /* Test special calling convention, passing a NULL pointer.  */
 109   {
 110     ret = wcrtomb (NULL, '\0', NULL);
 111     ASSERT (ret == 1);
 112     ret = wcrtomb (NULL, btowc ('x'), NULL);
 113     ASSERT (ret == 1);
 114   }
 115
 116   if (argc > 1)
 117     switch (argv[1][0])
 118       {
 119       case '1':
 120         /* C locale; tested above.  */
 121         return test_exit_status;
 122
 123       case '2':
 124         /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
 125         {
 126           const char input[] = "B\374\337er"; /* "Büßer" */
 127
 128           check_character (input + 1, 1);
 129           check_character (input + 2, 1);
 130         }
 131         return test_exit_status;
 132
 133       case '3':
 134         /* Locale encoding is UTF-8.  */
 135         {
 136           const char input[] = "B\303\274\303\237er"; /* "Büßer" */
 137
 138           check_character (input + 1, 2);
 139           check_character (input + 3, 2);
 140         }
 141         return test_exit_status;
 142
 143       case '4':
 144         /* Locale encoding is EUC-JP.  */
 145         {
 146           const char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
 147
 148           check_character (input + 1, 2);
 149           check_character (input + 3, 2);
 150           check_character (input + 5, 2);
 151         }
 152         return test_exit_status;
 153
 154       case '5':
 155         /* Locale encoding is GB18030.  */
 156         {
 157           const char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
 158
 159           check_character (input + 1, 2);
 160           check_character (input + 3, 4);
 161         }
 162         return test_exit_status;
 163       }
 164
 165   return 1;
 166 }