iconvdata/iso8859-1.c

   1 /* Conversion to and from ISO 8859-1.
   2    Copyright (C) 1997-2019 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, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <dlfcn.h>
  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 #define ONE_DIRECTION           0
  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   outptr += sizeof (uint32_t);
  40 #define ONEBYTE_BODY \
  41   {                                                                           \
  42     return c;                                                                 \
  43   }
  44 #include <iconv/loop.c>
  45
  46
  47 /* Next, define the other direction.  */
  48 #define MIN_NEEDED_INPUT        MIN_NEEDED_TO
  49 #define MIN_NEEDED_OUTPUT       MIN_NEEDED_FROM
  50 #define LOOPFCT                 TO_LOOP
  51 #define BODY \
  52   {                                                                           \
  53     uint32_t ch = *((const uint32_t *) inptr);                                \
  54     if (__glibc_unlikely (ch > 0xff))                                         \
  55       {                                                                       \
  56         UNICODE_TAG_HANDLER (ch, 4);                                          \
  57                                                                               \
  58         /* We have an illegal character.  */                                  \
  59         STANDARD_TO_LOOP_ERR_HANDLER (4);                                     \
  60       }                                                                       \
  61     else                                                                      \
  62       *outptr++ = (unsigned char) ch;                                         \
  63     inptr += 4;                                                               \
  64   }
  65 #define LOOP_NEED_FLAGS
  66 #include <iconv/loop.c>
  67
  68
  69 /* Now define the toplevel functions.  */
  70 #include <iconv/skeleton.c>