iconvdata/tst-table-from.c

   1 /* Copyright (C) 2000-2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Bruno Haible <haible@clisp.cons.org>, 2000.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* Create a table from CHARSET to Unicode.
  21    This is a good test for CHARSET's iconv() module, in particular the
  22    FROM_LOOP BODY macro.  */
  23
  24 #include <stddef.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <iconv.h>
  29 #include <errno.h>
  30
  31 /* If nonzero, ignore conversions outside Unicode plane 0.  */
  32 static int bmp_only;
  33
  34 /* Converts a byte buffer to a hexadecimal string.  */
  35 static const char*
  36 hexbuf (unsigned char buf[], unsigned int buflen)
  37 {
  38   static char msg[50];
  39
  40   switch (buflen)
  41     {
  42     case 1:
  43       sprintf (msg, "0x%02X", buf[0]);
  44       break;
  45     case 2:
  46       sprintf (msg, "0x%02X%02X", buf[0], buf[1]);
  47       break;
  48     case 3:
  49       sprintf (msg, "0x%02X%02X%02X", buf[0], buf[1], buf[2]);
  50       break;
  51     case 4:
  52       sprintf (msg, "0x%02X%02X%02X%02X", buf[0], buf[1], buf[2], buf[3]);
  53       break;
  54     default:
  55       abort ();
  56     }
  57   return msg;
  58 }
  59
  60 /* Attempts to convert a byte buffer BUF (BUFLEN bytes) to OUT (6 bytes)
  61    using the conversion descriptor CD.  Returns the number of written bytes,
  62    or 0 if ambiguous, or -1 if invalid.  */
  63 static int
  64 try (iconv_t cd, unsigned char buf[], unsigned int buflen, unsigned char *out)
  65 {
  66   const char *inbuf = (const char *) buf;
  67   size_t inbytesleft = buflen;
  68   char *outbuf = (char *) out;
  69   size_t outbytesleft = 6;
  70   size_t result;
  71
  72   iconv (cd, NULL, NULL, NULL, NULL);
  73   result = iconv (cd, (char **) &inbuf, &inbytesleft, &outbuf, &outbytesleft);
  74   if (result != (size_t)(-1))
  75     result = iconv (cd, NULL, NULL, &outbuf, &outbytesleft);
  76
  77   if (result == (size_t)(-1))
  78     {
  79       if (errno == EILSEQ)
  80         {
  81           return -1;
  82         }
  83       else if (errno == EINVAL)
  84         {
  85           return 0;
  86         }
  87       else
  88         {
  89           int saved_errno = errno;
  90           fprintf (stderr, "%s: iconv error: ", hexbuf (buf, buflen));
  91           errno = saved_errno;
  92           perror ("");
  93           exit (1);
  94         }
  95     }
  96   else
  97     {
  98       if (inbytesleft != 0)
  99         {
 100           fprintf (stderr, "%s: inbytes = %ld, outbytes = %ld\n",
 101                    hexbuf (buf, buflen),
 102                    (long) (buflen - inbytesleft),
 103                    (long) (6 - outbytesleft));
 104           exit (1);
 105         }
 106       return 6 - outbytesleft;
 107     }
 108 }
 109
 110 /* Returns the out[] buffer as a Unicode value, formatted as 0x%04X.  */
 111 static const char *
 112 utf8_decode (const unsigned char *out, unsigned int outlen)
 113 {
 114   static char hexbuf[42];
 115   char *p = hexbuf;
 116
 117   while (outlen > 0)
 118     {
 119       if (p > hexbuf)
 120         *p++ = ' ';
 121
 122       if (out[0] < 0x80)
 123         {
 124           sprintf (p, "0x%04X", out[0]);
 125           out += 1; outlen -= 1;
 126         }
 127       else if (out[0] >= 0xc0 && out[0] < 0xe0 && outlen >= 2)
 128         {
 129           sprintf (p, "0x%04X", ((out[0] & 0x1f) << 6) + (out[1] & 0x3f));
 130           out += 2; outlen -= 2;
 131         }
 132       else if (out[0] >= 0xe0 && out[0] < 0xf0 && outlen >= 3)
 133         {
 134           sprintf (p, "0x%04X", ((out[0] & 0x0f) << 12)
 135                                 + ((out[1] & 0x3f) << 6) + (out[2] & 0x3f));
 136           out += 3; outlen -= 3;
 137         }
 138       else if (out[0] >= 0xf0 && out[0] < 0xf8 && outlen >= 4)
 139         {
 140           sprintf (p, "0x%04X", ((out[0] & 0x07) << 18)
 141                                 + ((out[1] & 0x3f) << 12)
 142                                 + ((out[2] & 0x3f) << 6) + (out[3] & 0x3f));
 143           out += 4; outlen -= 4;
 144         }
 145       else if (out[0] >= 0xf8 && out[0] < 0xfc && outlen >= 5)
 146         {
 147           sprintf (p, "0x%04X", ((out[0] & 0x03) << 24)
 148                                 + ((out[1] & 0x3f) << 18)
 149                                 + ((out[2] & 0x3f) << 12)
 150                                 + ((out[3] & 0x3f) << 6) + (out[4] & 0x3f));
 151           out += 5; outlen -= 5;
 152         }
 153       else if (out[0] >= 0xfc && out[0] < 0xfe && outlen >= 6)
 154         {
 155           sprintf (p, "0x%04X", ((out[0] & 0x01) << 30)
 156                                 + ((out[1] & 0x3f) << 24)
 157                                 + ((out[2] & 0x3f) << 18)
 158                                 + ((out[3] & 0x3f) << 12)
 159                                 + ((out[4] & 0x3f) << 6) + (out[5] & 0x3f));
 160           out += 6; outlen -= 6;
 161         }
 162       else
 163         {
 164           sprintf (p, "0x????");
 165           out += 1; outlen -= 1;
 166         }
 167
 168       if (bmp_only && strlen (p) > 6)
 169         /* Ignore conversions outside Unicode plane 0.  */
 170         return NULL;
 171
 172       p += strlen (p);
 173     }
 174
 175   return hexbuf;
 176 }
 177
 178 int
 179 main (int argc, char *argv[])
 180 {
 181   const char *charset;
 182   iconv_t cd;
 183   int search_depth;
 184
 185   if (argc != 2)
 186     {
 187       fprintf (stderr, "Usage: tst-table-from charset\n");
 188       exit (1);
 189     }
 190   charset = argv[1];
 191
 192   cd = iconv_open ("UTF-8", charset);
 193   if (cd == (iconv_t)(-1))
 194     {
 195       perror ("iconv_open");
 196       exit (1);
 197     }
 198
 199   /* When testing UTF-8 or GB18030, stop at 0x10000, otherwise the output
 200      file gets too big.  */
 201   bmp_only = (strcmp (charset, "UTF-8") == 0
 202               || strcmp (charset, "GB18030") == 0);
 203   search_depth = (strcmp (charset, "UTF-8") == 0 ? 3 : 4);
 204
 205   {
 206     unsigned char out[6];
 207     unsigned char buf[4];
 208     unsigned int i0, i1, i2, i3;
 209     int result;
 210
 211     for (i0 = 0; i0 < 0x100; i0++)
 212       {
 213         buf[0] = i0;
 214         result = try (cd, buf, 1, out);
 215         if (result < 0)
 216           {
 217           }
 218         else if (result > 0)
 219           {
 220             const char *unicode = utf8_decode (out, result);
 221             if (unicode != NULL)
 222               printf ("0x%02X\t%s\n", i0, unicode);
 223           }
 224         else
 225           {
 226             for (i1 = 0; i1 < 0x100; i1++)
 227               {
 228                 buf[1] = i1;
 229                 result = try (cd, buf, 2, out);
 230                 if (result < 0)
 231                   {
 232                   }
 233                 else if (result > 0)
 234                   {
 235                     const char *unicode = utf8_decode (out, result);
 236                     if (unicode != NULL)
 237                       printf ("0x%02X%02X\t%s\n", i0, i1, unicode);
 238                   }
 239                 else
 240                   {
 241                     for (i2 = 0; i2 < 0x100; i2++)
 242                       {
 243                         buf[2] = i2;
 244                         result = try (cd, buf, 3, out);
 245                         if (result < 0)
 246                           {
 247                           }
 248                         else if (result > 0)
 249                           {
 250                             const char *unicode = utf8_decode (out, result);
 251                             if (unicode != NULL)
 252                               printf ("0x%02X%02X%02X\t%s\n",
 253                                       i0, i1, i2, unicode);
 254                           }
 255                         else if (search_depth > 3)
 256                           {
 257                             for (i3 = 0; i3 < 0x100; i3++)
 258                               {
 259                                 buf[3] = i3;
 260                                 result = try (cd, buf, 4, out);
 261                                 if (result < 0)
 262                                   {
 263                                   }
 264                                 else if (result > 0)
 265                                   {
 266                                     const char *unicode =
 267                                       utf8_decode (out, result);
 268                                     if (unicode != NULL)
 269                                       printf ("0x%02X%02X%02X%02X\t%s\n",
 270                                               i0, i1, i2, i3, unicode);
 271                                   }
 272                                 else
 273                                   {
 274                                     fprintf (stderr,
 275                                              "%s: incomplete byte sequence\n",
 276                                              hexbuf (buf, 4));
 277                                     exit (1);
 278                                   }
 279                               }
 280                           }
 281                       }
 282                   }
 283               }
 284           }
 285       }
 286   }
 287
 288   if (iconv_close (cd) < 0)
 289     {
 290       perror ("iconv_close");
 291       exit (1);
 292     }
 293
 294   if (ferror (stdin) || fflush (stdout) || ferror (stdout))
 295     {
 296       fprintf (stderr, "I/O error\n");
 297       exit (1);
 298     }
 299
 300   return 0;
 301 }