iconv/tst-iconv-opt.c

   1 /* Test iconv's TRANSLIT and IGNORE option handling
   2
   3    Copyright (C) 2020-2023 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
  21 #include <iconv.h>
  22 #include <locale.h>
  23 #include <errno.h>
  24 #include <string.h>
  25 #include <support/support.h>
  26 #include <support/check.h>
  27
  28
  29 /* Run one iconv test.  Arguments:
  30    to: destination character set and options
  31    from: source character set
  32    input: input string to be converted
  33    exp_in: expected number of bytes consumed
  34    exp_ret: expected return value (error or number of irreversible conversions)
  35    exp_out: expected output string
  36    exp_err: expected value of `errno' after iconv returns.  */
  37 static void
  38 test_iconv (const char *to, const char *from, char *input, size_t exp_in,
  39             size_t exp_ret, const char *exp_out, int exp_err)
  40 {
  41   iconv_t cd;
  42   char outbuf[500];
  43   size_t inlen, outlen;
  44   char *inptr, *outptr;
  45   size_t n;
  46
  47   cd = iconv_open (to, from);
  48   TEST_VERIFY (cd != (iconv_t) -1);
  49
  50   inlen = strlen (input);
  51   outlen = sizeof (outbuf);
  52   inptr = input;
  53   outptr = outbuf;
  54
  55   errno = 0;
  56   n = iconv (cd, &inptr, &inlen, &outptr, &outlen);
  57
  58   TEST_COMPARE (n, exp_ret);
  59   TEST_VERIFY (inptr == input + exp_in);
  60   TEST_COMPARE (errno, exp_err);
  61   TEST_COMPARE_BLOB (outbuf, outptr - outbuf, exp_out, strlen (exp_out));
  62   TEST_VERIFY (iconv_close (cd) == 0);
  63 }
  64
  65
  66 /* We test option parsing by converting UTF-8 inputs to ASCII under various
  67    option combinations. The UTF-8 inputs fall into three categories:
  68    - ASCII-only,
  69    - non-ASCII,
  70    - non-ASCII with invalid UTF-8 characters.  */
  71
  72 /* 1.  */
  73 char ascii[] = "Just some ASCII text";
  74
  75 /* 2. Valid UTF-8 input and some corresponding expected outputs with various
  76    options.  The two non-ASCII characters below are accented alphabets:
  77    an `a' then an `o'.  */
  78 char utf8[] = "UTF-8 text with \u00E1 couple \u00F3f non-ASCII characters";
  79 char u2a[] = "UTF-8 text with ";
  80 char u2a_translit[] = "UTF-8 text with a couple of non-ASCII characters";
  81 char u2a_ignore[] = "UTF-8 text with  couple f non-ASCII characters";
  82
  83 /* 3. Invalid UTF-8 input and some corresponding expected outputs.  \xff is
  84    invalid UTF-8. It's followed by some valid but non-ASCII UTF-8.  */
  85 char iutf8[] = "Invalid UTF-8 \xff\u27E6text\u27E7";
  86 char iu2a[] = "Invalid UTF-8 ";
  87 char iu2a_ignore[] = "Invalid UTF-8 text";
  88 char iu2a_both[] = "Invalid UTF-8 [|text|]";
  89
  90 /* 4. Another invalid UTF-8 input and corresponding expected outputs. This time
  91    the valid non-ASCII UTF-8 characters appear before the invalid \xff.  */
  92 char jutf8[] = "Invalid \u27E6UTF-8\u27E7 \xfftext";
  93 char ju2a[] = "Invalid ";
  94 char ju2a_translit[] = "Invalid [|UTF-8|] ";
  95 char ju2a_ignore[] = "Invalid UTF-8 text";
  96 char ju2a_both[] = "Invalid [|UTF-8|] text";
  97
  98 /* We also test option handling for character set names that have the form
  99    "A/B".  In this test, we test conversions "ISO-10646/UTF-8", and either
 100    ISO-8859-1 or ASCII.  */
 101
 102 /* 5. Accented 'A' and 'a' characters in ISO-8859-1 and UTF-8, and an
 103    equivalent ASCII transliteration.  */
 104 char iso8859_1_a[] = {0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, /* Accented A's.  */
 105                       0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, /* Accented a's.  */
 106                       0x00};
 107 char utf8_a[] = "\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5"
 108                 "\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5";
 109 char ascii_a[] = "AAAAAAaaaaaa";
 110
 111 /* 6. An invalid ASCII string where [0] is invalid and [1] is '~'.  */
 112 char iascii [] = {0x80, '~', '\0'};
 113 char empty[] = "";
 114 char ia2u_ignore[] = "~";
 115
 116 static int
 117 do_test (void)
 118 {
 119   xsetlocale (LC_ALL, "en_US.UTF-8");
 120
 121
 122   /* 0. iconv_open should gracefully fail for invalid character sets.  */
 123
 124   TEST_VERIFY (iconv_open ("INVALID", "UTF-8") == (iconv_t) -1);
 125   TEST_VERIFY (iconv_open ("UTF-8", "INVALID") == (iconv_t) -1);
 126   TEST_VERIFY (iconv_open ("INVALID", "INVALID") == (iconv_t) -1);
 127
 128
 129   /* 1. ASCII-only UTF-8 input should convert to ASCII with no changes:  */
 130
 131   test_iconv ("ASCII", "UTF-8", ascii, strlen (ascii), 0, ascii, 0);
 132   test_iconv ("ASCII//", "UTF-8", ascii, strlen (ascii), 0, ascii, 0);
 133   test_iconv ("ASCII//TRANSLIT", "UTF-8", ascii, strlen (ascii), 0, ascii, 0);
 134   test_iconv ("ASCII//TRANSLIT//", "UTF-8", ascii, strlen (ascii), 0, ascii,
 135               0);
 136   test_iconv ("ASCII//IGNORE", "UTF-8", ascii, strlen (ascii), 0, ascii, 0);
 137   test_iconv ("ASCII//IGNORE//", "UTF-8", ascii, strlen (ascii), 0, ascii, 0);
 138
 139
 140   /* 2. Valid UTF-8 input with non-ASCII characters:  */
 141
 142   /* EILSEQ when converted to ASCII.  */
 143   test_iconv ("ASCII", "UTF-8", utf8, strlen (u2a), (size_t) -1, u2a, EILSEQ);
 144
 145   /* Converted without error with TRANSLIT enabled.  */
 146   test_iconv ("ASCII//TRANSLIT", "UTF-8", utf8, strlen (utf8), 2, u2a_translit,
 147               0);
 148
 149   /* EILSEQ with IGNORE enabled.  Non-ASCII chars dropped from output.  */
 150   test_iconv ("ASCII//IGNORE", "UTF-8", utf8, strlen (utf8), (size_t) -1,
 151               u2a_ignore, EILSEQ);
 152
 153   /* With TRANSLIT and IGNORE enabled, transliterated without error.  We test
 154      four combinations.  */
 155
 156   test_iconv ("ASCII//TRANSLIT,IGNORE", "UTF-8", utf8, strlen (utf8), 2,
 157               u2a_translit, 0);
 158   test_iconv ("ASCII//TRANSLIT//IGNORE", "UTF-8", utf8, strlen (utf8), 2,
 159               u2a_translit, 0);
 160   test_iconv ("ASCII//IGNORE,TRANSLIT", "UTF-8", utf8, strlen (utf8), 2,
 161               u2a_translit, 0);
 162   /* Due to bug 19519, iconv was ignoring TRANSLIT for the following input.  */
 163   test_iconv ("ASCII//IGNORE//TRANSLIT", "UTF-8", utf8, strlen (utf8), 2,
 164               u2a_translit, 0);
 165
 166   /* Misspellings of TRANSLIT and IGNORE are ignored, but conversion still
 167      works while respecting any other correctly spelled options.  */
 168
 169   test_iconv ("ASCII//T", "UTF-8", utf8, strlen (u2a), (size_t) -1, u2a,
 170               EILSEQ);
 171   test_iconv ("ASCII//TRANSLITERATE", "UTF-8", utf8, strlen (u2a), (size_t) -1,
 172               u2a, EILSEQ);
 173   test_iconv ("ASCII//I", "UTF-8", utf8, strlen (u2a), (size_t) -1, u2a,
 174               EILSEQ);
 175   test_iconv ("ASCII//IGNORED", "UTF-8", utf8, strlen (u2a), (size_t) -1, u2a,
 176               EILSEQ);
 177   test_iconv ("ASCII//TRANSLITERATE//IGNORED", "UTF-8", utf8, strlen (u2a),
 178               (size_t) -1, u2a, EILSEQ);
 179   test_iconv ("ASCII//IGNORED,TRANSLITERATE", "UTF-8", utf8, strlen (u2a),
 180               (size_t) -1, u2a, EILSEQ);
 181   test_iconv ("ASCII//T//I", "UTF-8", utf8, strlen (u2a), (size_t) -1, u2a,
 182               EILSEQ);
 183
 184   test_iconv ("ASCII//TRANSLIT//I", "UTF-8", utf8, strlen (utf8), 2,
 185               u2a_translit, 0);
 186   /* Due to bug 19519, iconv was ignoring TRANSLIT for the following input.  */
 187   test_iconv ("ASCII//I//TRANSLIT", "UTF-8", utf8, strlen (utf8), 2,
 188               u2a_translit, 0);
 189   test_iconv ("ASCII//IGNORED,TRANSLIT", "UTF-8", utf8, strlen (utf8), 2,
 190               u2a_translit, 0);
 191   test_iconv ("ASCII//TRANSLIT,IGNORED", "UTF-8", utf8, strlen (utf8), 2,
 192               u2a_translit, 0);
 193
 194   test_iconv ("ASCII//IGNORE,T", "UTF-8", utf8, strlen (utf8), (size_t) -1,
 195               u2a_ignore, EILSEQ);
 196   test_iconv ("ASCII//T,IGNORE", "UTF-8", utf8, strlen (utf8), (size_t) -1,
 197               u2a_ignore, EILSEQ);
 198   /* Due to bug 19519, iconv was ignoring IGNORE for the following input.  */
 199   test_iconv ("ASCII//TRANSLITERATE//IGNORE", "UTF-8", utf8, strlen (utf8),
 200               (size_t) -1, u2a_ignore, EILSEQ);
 201   test_iconv ("ASCII//IGNORE//TRANSLITERATE", "UTF-8", utf8, strlen (utf8),
 202               (size_t) -1, u2a_ignore, EILSEQ);
 203
 204
 205   /* 3. Invalid UTF-8 followed by some valid non-ASCII UTF-8 characters:  */
 206
 207   /* EILSEQ; output is truncated at the first invalid UTF-8 character.  */
 208   test_iconv ("ASCII", "UTF-8", iutf8, strlen (iu2a), (size_t) -1, iu2a,
 209               EILSEQ);
 210
 211   /* With TRANSLIT enabled: EILSEQ; output still truncated at the first invalid
 212      UTF-8 character.  */
 213   test_iconv ("ASCII//TRANSLIT", "UTF-8", iutf8, strlen (iu2a), (size_t) -1,
 214               iu2a, EILSEQ);
 215
 216   /* With IGNORE enabled: EILSEQ; output omits invalid UTF-8 characters and
 217      valid UTF-8 non-ASCII characters.  */
 218   test_iconv ("ASCII//IGNORE", "UTF-8", iutf8, strlen (iutf8), (size_t) -1,
 219               iu2a_ignore, EILSEQ);
 220
 221   /* With TRANSLIT and IGNORE enabled, output omits only invalid UTF-8
 222      characters and transliterates valid non-ASCII UTF-8 characters.  We test
 223      four combinations.  */
 224
 225   test_iconv ("ASCII//TRANSLIT,IGNORE", "UTF-8", iutf8, strlen (iutf8), 2,
 226               iu2a_both, 0);
 227   /* Due to bug 19519, iconv was ignoring IGNORE for the following input.  */
 228   test_iconv ("ASCII//TRANSLIT//IGNORE", "UTF-8", iutf8, strlen (iutf8), 2,
 229               iu2a_both, 0);
 230   test_iconv ("ASCII//IGNORE,TRANSLIT", "UTF-8", iutf8, strlen (iutf8), 2,
 231               iu2a_both, 0);
 232   /* Due to bug 19519, iconv was ignoring TRANSLIT for the following input.  */
 233   test_iconv ("ASCII//IGNORE//TRANSLIT", "UTF-8", iutf8, strlen (iutf8), 2,
 234               iu2a_both, 0);
 235
 236
 237   /* 4. Invalid UTF-8 with valid non-ASCII UTF-8 chars appearing first:  */
 238
 239   /* EILSEQ; output is truncated at the first non-ASCII character.  */
 240   test_iconv ("ASCII", "UTF-8", jutf8, strlen (ju2a), (size_t) -1, ju2a,
 241               EILSEQ);
 242
 243   /* With TRANSLIT enabled: EILSEQ; output now truncated at the first invalid
 244      UTF-8 character.  */
 245   test_iconv ("ASCII//TRANSLIT", "UTF-8", jutf8, strlen (jutf8) - 5,
 246               (size_t) -1, ju2a_translit, EILSEQ);
 247   test_iconv ("ASCII//translit", "UTF-8", jutf8, strlen (jutf8) - 5,
 248               (size_t) -1, ju2a_translit, EILSEQ);
 249
 250   /* With IGNORE enabled: EILSEQ; output omits invalid UTF-8 characters and
 251      valid UTF-8 non-ASCII characters.  */
 252   test_iconv ("ASCII//IGNORE", "UTF-8", jutf8, strlen (jutf8), (size_t) -1,
 253               ju2a_ignore, EILSEQ);
 254   test_iconv ("ASCII//ignore", "UTF-8", jutf8, strlen (jutf8), (size_t) -1,
 255               ju2a_ignore, EILSEQ);
 256
 257   /* With TRANSLIT and IGNORE enabled, output omits only invalid UTF-8
 258      characters and transliterates valid non-ASCII UTF-8 characters.  We test
 259      several combinations.  */
 260
 261   test_iconv ("ASCII//TRANSLIT,IGNORE", "UTF-8", jutf8, strlen (jutf8), 2,
 262               ju2a_both, 0);
 263   /* Due to bug 19519, iconv was ignoring IGNORE for the following input.  */
 264   test_iconv ("ASCII//TRANSLIT//IGNORE", "UTF-8", jutf8, strlen (jutf8), 2,
 265               ju2a_both, 0);
 266   test_iconv ("ASCII//IGNORE,TRANSLIT", "UTF-8", jutf8, strlen (jutf8), 2,
 267               ju2a_both, 0);
 268   /* Due to bug 19519, iconv was ignoring TRANSLIT for the following input.  */
 269   test_iconv ("ASCII//IGNORE//TRANSLIT", "UTF-8", jutf8, strlen (jutf8), 2,
 270               ju2a_both, 0);
 271   test_iconv ("ASCII//translit,ignore", "UTF-8", jutf8, strlen (jutf8), 2,
 272               ju2a_both, 0);
 273   /* Trailing whitespace and separators should be ignored.  */
 274   test_iconv ("ASCII//IGNORE,TRANSLIT ", "UTF-8", jutf8, strlen (jutf8), 2,
 275               ju2a_both, 0);
 276   test_iconv ("ASCII//IGNORE,TRANSLIT/", "UTF-8", jutf8, strlen (jutf8), 2,
 277               ju2a_both, 0);
 278   test_iconv ("ASCII//IGNORE,TRANSLIT//", "UTF-8", jutf8, strlen (jutf8), 2,
 279               ju2a_both, 0);
 280   test_iconv ("ASCII//IGNORE,TRANSLIT,", "UTF-8", jutf8, strlen (jutf8), 2,
 281               ju2a_both, 0);
 282   test_iconv ("ASCII//IGNORE,TRANSLIT,,", "UTF-8", jutf8, strlen (jutf8), 2,
 283               ju2a_both, 0);
 284   test_iconv ("ASCII//IGNORE,TRANSLIT /,", "UTF-8", jutf8, strlen (jutf8), 2,
 285               ju2a_both, 0);
 286
 287   /* TRANSLIT or IGNORE suffixes in fromcode should be ignored.  */
 288   test_iconv ("ASCII", "UTF-8//TRANSLIT", jutf8, strlen (ju2a), (size_t) -1,
 289               ju2a, EILSEQ);
 290   test_iconv ("ASCII", "UTF-8//IGNORE", jutf8, strlen (ju2a), (size_t) -1,
 291               ju2a, EILSEQ);
 292   test_iconv ("ASCII", "UTF-8//TRANSLIT,IGNORE", jutf8, strlen (ju2a),
 293               (size_t) -1, ju2a, EILSEQ);
 294
 295
 296   /* 5. Charset names of the form "A/B/":  */
 297
 298   /* ISO-8859-1 is converted to UTF-8 without needing transliteration.  */
 299   test_iconv ("ISO-10646/UTF-8", "ISO-8859-1", iso8859_1_a,
 300               strlen (iso8859_1_a), 0, utf8_a, 0);
 301   test_iconv ("ISO-10646/UTF-8/", "ISO-8859-1", iso8859_1_a,
 302               strlen (iso8859_1_a), 0, utf8_a, 0);
 303   test_iconv ("ISO-10646/UTF-8/IGNORE", "ISO-8859-1", iso8859_1_a,
 304               strlen (iso8859_1_a), 0, utf8_a, 0);
 305   test_iconv ("ISO-10646/UTF-8//IGNORE", "ISO-8859-1", iso8859_1_a,
 306               strlen (iso8859_1_a), 0, utf8_a, 0);
 307   test_iconv ("ISO-10646/UTF-8/TRANSLIT", "ISO-8859-1", iso8859_1_a,
 308               strlen (iso8859_1_a), 0, utf8_a, 0);
 309   test_iconv ("ISO-10646/UTF-8//TRANSLIT", "ISO-8859-1", iso8859_1_a,
 310               strlen (iso8859_1_a), 0, utf8_a, 0);
 311   test_iconv ("ISO-10646/UTF-8//TRANSLIT/IGNORE", "ISO-8859-1", iso8859_1_a,
 312               strlen (iso8859_1_a), 0, utf8_a, 0);
 313   test_iconv ("ISO-10646/UTF-8//TRANSLIT//IGNORE", "ISO-8859-1", iso8859_1_a,
 314               strlen (iso8859_1_a), 0, utf8_a, 0);
 315   test_iconv ("ISO-10646/UTF-8/TRANSLIT,IGNORE", "ISO-8859-1", iso8859_1_a,
 316               strlen (iso8859_1_a), 0, utf8_a, 0);
 317
 318   /* UTF-8 with accented A's is converted to ASCII with transliteration.  */
 319   test_iconv ("ASCII", "ISO-10646/UTF-8", utf8_a,
 320               0, (size_t) -1, empty, EILSEQ);
 321   test_iconv ("ASCII//IGNORE", "ISO-10646/UTF-8", utf8_a,
 322               strlen (utf8_a), (size_t) -1, empty, EILSEQ);
 323   test_iconv ("ASCII//TRANSLIT", "ISO-10646/UTF-8", utf8_a,
 324               strlen (utf8_a), 12, ascii_a, 0);
 325
 326   /* Invalid ASCII is converted to UTF-8 only with IGNORE.  */
 327   test_iconv ("ISO-10646/UTF-8", "ASCII", iascii, strlen (empty), (size_t) -1,
 328               empty, EILSEQ);
 329   test_iconv ("ISO-10646/UTF-8/TRANSLIT", "ASCII", iascii, strlen (empty),
 330               (size_t) -1, empty, EILSEQ);
 331   test_iconv ("ISO-10646/UTF-8/IGNORE", "ASCII", iascii, strlen (iascii),
 332               (size_t) -1, ia2u_ignore, EILSEQ);
 333   test_iconv ("ISO-10646/UTF-8/TRANSLIT,IGNORE", "ASCII", iascii,
 334               strlen (iascii), (size_t) -1, ia2u_ignore, EILSEQ);
 335   /* Due to bug 19519, iconv was ignoring IGNORE for the following three
 336      inputs: */
 337   test_iconv ("ISO-10646/UTF-8/TRANSLIT/IGNORE", "ASCII", iascii,
 338               strlen (iascii), (size_t) -1, ia2u_ignore, EILSEQ);
 339   test_iconv ("ISO-10646/UTF-8//TRANSLIT,IGNORE", "ASCII", iascii,
 340               strlen (iascii), (size_t) -1, ia2u_ignore, EILSEQ);
 341   test_iconv ("ISO-10646/UTF-8//TRANSLIT//IGNORE", "ASCII", iascii,
 342               strlen (iascii), (size_t) -1, ia2u_ignore, EILSEQ);
 343
 344   return 0;
 345 }
 346
 347 #include <support/test-driver.c>