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 <stdint.h>
  22
  23 /* Definitions used in the body of the `gconv' function.  */
  24 #define CHARSET_NAME            "ISO-8859-1//"
  25 #define FROM_LOOP               from_iso8859_1
  26 #define TO_LOOP                 to_iso8859_1
  27 #define DEFINE_INIT             1
  28 #define DEFINE_FINI             1
  29 #define MIN_NEEDED_FROM         1
  30 #define MIN_NEEDED_TO           4
  31
  32 /* First define the conversion function from ISO 8859-1 to UCS4.  */
  33 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  34 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  35 #define LOOPFCT                 FROM_LOOP
  36 #define BODY \
  37   *((uint32_t *) outptr)++ = *inptr++;
  38 #include <iconv/loop.c>
  39
  40
  41 /* Next, define the other direction.  */
  42 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
  43 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
  44 #define LOOPFCT                 TO_LOOP
  45 #define BODY \
  46   {                                                                           \
  47     uint32_t ch = *((uint32_t *) inptr);                                      \
  48     if (__builtin_expect (ch, 0) > 0xff)                                      \
  49       {                                                                       \
  50         /* We have an illegal character.  */                                  \
  51         if (! ignore_errors_p ())                                             \
  52           {                                                                   \
  53             result = __GCONV_ILLEGAL_INPUT;                                   \
  54             break;                                                            \
  55           }                                                                   \
  56                                                                               \
  57         ++*irreversible;                                                      \
  58       }                                                                       \
  59     else                                                                      \
  60       *outptr++ = (unsigned char) ch;                                         \
  61     inptr += 4;                                                               \
  62   }
  63 #include <iconv/loop.c>
  64
  65
  66 /* Now define the toplevel functions.  */
  67 #include <iconv/skeleton.c>