iconvdata/iso8859-1.c

   1 /* Conversion to and from ISO 8859-1.
   2    Copyright (C) 1997, 1998, 1999, 2000 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 Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    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    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <dlfcn.h>
  22 #include <stdint.h>
  23
  24 /* Definitions used in the body of the `gconv' function.  */
  25 #define CHARSET_NAME            "ISO-8859-1//"
  26 #define FROM_LOOP               from_iso8859_1
  27 #define TO_LOOP                 to_iso8859_1
  28 #define DEFINE_INIT             1
  29 #define DEFINE_FINI             1
  30 #define MIN_NEEDED_FROM         1
  31 #define MIN_NEEDED_TO           4
  32
  33 /* First define the conversion function from ISO 8859-1 to UCS4.  */
  34 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  35 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  36 #define LOOPFCT                 FROM_LOOP
  37 #define BODY \
  38   *((uint32_t *) outptr)++ = *inptr++;
  39 #include <iconv/loop.c>
  40
  41
  42 /* Next, define the other direction.  */
  43 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
  44 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
  45 #define LOOPFCT                 TO_LOOP
  46 #define BODY \
  47   {                                                                           \
  48     uint32_t ch = *((uint32_t *) inptr);                                      \
  49     if (__builtin_expect (ch, 0) > 0xff)                                      \
  50       {                                                                       \
  51         /* We have an illegal character.  */                                  \
  52         if (step_data->__trans.__trans_fct != NULL)                           \
  53           {                                                                   \
  54             result = DL_CALL_FCT (step_data->__trans.__trans_fct,             \
  55                                   (step, step_data, *inptrp, &inptr, inend,   \
  56                                    *outptrp, &outptr, outend, irreversible)); \
  57             if (result != __GCONV_OK)                                         \
  58               break;                                                          \
  59           }                                                                   \
  60         else if (! ignore_errors_p ())                                        \
  61           {                                                                   \
  62             result = __GCONV_ILLEGAL_INPUT;                                   \
  63             break;                                                            \
  64           }                                                                   \
  65         else                                                                  \
  66           {                                                                   \
  67             inptr += 4;                                                       \
  68             ++*irreversible;                                                  \
  69           }                                                                   \
  70         continue;                                                             \
  71       }                                                                       \
  72     else                                                                      \
  73       *outptr++ = (unsigned char) ch;                                         \
  74     inptr += 4;                                                               \
  75   }
  76 #define LOOP_NEED_FLAGS
  77 #include <iconv/loop.c>
  78
  79
  80 /* Now define the toplevel functions.  */
  81 #include <iconv/skeleton.c>