iconv/tst-iconv9.c

   1 /* Verify that using C.UTF-8 works.
   2
   3    Copyright (C) 2021-2024 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <iconv.h>
  21 #include <stddef.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <support/support.h>
  25 #include <support/check.h>
  26
  27 /* This test does two things:
  28    (1) Verify that we have likely included translit_combining in C.UTF-8.
  29    (2) Verify default_missing is '?' as expected.  */
  30
  31 /* ISO-8859-1 encoding of "für".  */
  32 char iso88591_in[] = { 0x66, 0xfc, 0x72, 0x0 };
  33 /* ASCII transliteration is "fur" with C.UTF-8 translit_combining.  */
  34 char ascii_exp[] = { 0x66, 0x75, 0x72, 0x0 };
  35
  36 /* First 3-byte UTF-8 code point.  */
  37 char utf8_in[] = { 0xe0, 0xa0, 0x80, 0x0 };
  38 /* There is no ASCII transliteration for SAMARITAN LETTER ALAF
  39    so we get default_missing used which is '?'.  */
  40 char default_missing_exp[] = { 0x3f, 0x0 };
  41
  42 static int
  43 do_test (void)
  44 {
  45   char ascii_out[5];
  46   iconv_t cd;
  47   char *inbuf;
  48   char *outbuf;
  49   size_t inbytes;
  50   size_t outbytes;
  51   size_t n;
  52
  53   /* The C.UTF-8 locale should include translit_combining, which provides
  54      the transliteration for "LATIN SMALL LETTER U WITH DIAERESIS" which
  55      is not provided by locale/C-translit.h.in.  */
  56   xsetlocale (LC_ALL, "C.UTF-8");
  57
  58   /* From ISO-8859-1 to ASCII.  */
  59   cd = iconv_open ("ASCII//TRANSLIT,IGNORE", "ISO-8859-1");
  60   TEST_VERIFY (cd != (iconv_t) -1);
  61   inbuf = iso88591_in;
  62   inbytes = 3;
  63   outbuf = ascii_out;
  64   outbytes = 3;
  65   n = iconv (cd, &inbuf, &inbytes, &outbuf, &outbytes);
  66   TEST_VERIFY (n != -1);
  67   *outbuf = '\0';
  68   TEST_COMPARE_BLOB (ascii_out, 3, ascii_exp, 3);
  69   TEST_VERIFY (iconv_close (cd) == 0);
  70
  71   /* From UTF-8 to ASCII.  */
  72   cd = iconv_open ("ASCII//TRANSLIT,IGNORE", "UTF-8");
  73   TEST_VERIFY (cd != (iconv_t) -1);
  74   inbuf = utf8_in;
  75   inbytes = 3;
  76   outbuf = ascii_out;
  77   outbytes = 3;
  78   n = iconv (cd, &inbuf, &inbytes, &outbuf, &outbytes);
  79   TEST_VERIFY (n != -1);
  80   *outbuf = '\0';
  81   TEST_COMPARE_BLOB (ascii_out, 1, default_missing_exp, 1);
  82   TEST_VERIFY (iconv_close (cd) == 0);
  83
  84   return 0;
  85 }
  86
  87 #include <support/test-driver.c>