iconvdata/8bit-generic.c

   1 /* Generic conversion to and from 8bit charsets.
   2    Copyright (C) 1997, 1998 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 #define FROM_LOOP               from_generic
  22 #define TO_LOOP                 to_generic
  23 #define DEFINE_INIT             1
  24 #define DEFINE_FINI             1
  25 #define MIN_NEEDED_FROM         1
  26 #define MIN_NEEDED_TO           4
  27
  28
  29 /* First define the conversion function from the 8bit charset to UCS4.  */
  30 #define MIN_NEEDED_INPUT        MIN_NEEDED_FROM
  31 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_TO
  32 #define LOOPFCT                 FROM_LOOP
  33 #define BODY \
  34   {                                                                           \
  35     uint32_t ch = to_ucs4[*inptr];                                            \
  36                                                                               \
  37     if (HAS_HOLES && ch == L'\0' && *inptr != '\0')                           \
  38       {                                                                       \
  39         /* This is an illegal character.  */                                  \
  40         result = GCONV_ILLEGAL_INPUT;                                         \
  41         break;                                                                \
  42       }                                                                       \
  43                                                                               \
  44     *((uint32_t *) outptr)++ = ch;                                            \
  45     ++inptr;                                                                  \
  46   }
  47 #include <iconv/loop.c>
  48
  49
  50 /* Next, define the other direction.  */
  51 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
  52 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
  53 #define LOOPFCT                 TO_LOOP
  54 #define BODY \
  55   {                                                                           \
  56     uint32_t ch = *((uint32_t *) inptr);                                      \
  57                                                                               \
  58     if (ch >= sizeof (from_ucs4) / sizeof (from_ucs4[0])                      \
  59         || (ch != 0 && from_ucs4[ch] == '\0'))                                \
  60       {                                                                       \
  61         /* This is an illegal character.  */                                  \
  62         result = GCONV_ILLEGAL_INPUT;                                         \
  63         break;                                                                \
  64       }                                                                       \
  65                                                                               \
  66     *outptr++ = from_ucs4[ch];                                                \
  67     inptr += 4;                                                               \
  68   }
  69 #include <iconv/loop.c>
  70
  71
  72 /* Now define the toplevel functions.  */
  73 #include <iconv/skeleton.c>