iconvdata/8bit-generic.c

   1 /* Generic conversion to and from 8bit charsets.
   2    Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <dlfcn.h>
  22
  23 #define FROM_LOOP               from_generic
  24 #define TO_LOOP                 to_generic
  25 #define DEFINE_INIT             1
  26 #define DEFINE_FINI             1
  27 #define MIN_NEEDED_FROM         1
  28 #define MIN_NEEDED_TO           4
  29
  30
  31 /* First define the conversion function from the 8bit charset to UCS4.  */
  32 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  33 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  34 #define LOOPFCT                 FROM_LOOP
  35 #define BODY \
  36   {                                                                           \
  37     uint32_t ch = to_ucs4[*inptr];                                            \
  38                                                                               \
  39     if (HAS_HOLES && __builtin_expect (ch, L'\1') == L'\0' && *inptr != '\0') \
  40       {                                                                       \
  41         /* This is an illegal character.  */                                  \
  42         if (! ignore_errors_p ())                                             \
  43           {                                                                   \
  44             result = __GCONV_ILLEGAL_INPUT;                                   \
  45             break;                                                            \
  46           }                                                                   \
  47                                                                               \
  48         ++*irreversible;                                                      \
  49       }                                                                       \
  50                                                                               \
  51     put32 (outptr, ch);                                                       \
  52     outptr += 4;                                                              \
  53     ++inptr;                                                                  \
  54   }
  55 #define LOOP_NEED_FLAGS
  56 #include <iconv/loop.c>
  57
  58
  59 /* Next, define the other direction.  */
  60 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
  61 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
  62 #define LOOPFCT                 TO_LOOP
  63 #define BODY \
  64   {                                                                           \
  65     uint32_t ch = get32 (inptr);                                              \
  66                                                                               \
  67     if (__builtin_expect (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0]), 0)\
  68         || (__builtin_expect (from_ucs4[ch], '\1') == '\0' && ch != 0))       \
  69       {                                                                       \
  70         UNICODE_TAG_HANDLER (ch, 4);                                          \
  71                                                                               \
  72         /* This is an illegal character.  */                                  \
  73         STANDARD_ERR_HANDLER (4);                                             \
  74       }                                                                       \
  75                                                                               \
  76     *outptr++ = from_ucs4[ch];                                                \
  77     inptr += 4;                                                               \
  78   }
  79 #define LOOP_NEED_FLAGS
  80 #include <iconv/loop.c>
  81
  82
  83 /* Now define the toplevel functions.  */
  84 #include <iconv/skeleton.c>