iconv/gconv_builtin.c

   1 /* Table for builtin transformation mapping.
   2    Copyright (C) 1997-2020 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 <endian.h>
  21 #include <limits.h>
  22 #include <stdint.h>
  23 #include <string.h>
  24
  25 #include <gconv_int.h>
  26
  27 #include <assert.h>
  28
  29
  30 static const struct builtin_map
  31 {
  32   const char *name;
  33   __gconv_fct fct;
  34   __gconv_btowc_fct btowc_fct;
  35
  36   int8_t min_needed_from;
  37   int8_t max_needed_from;
  38   int8_t min_needed_to;
  39   int8_t max_needed_to;
  40
  41 } map[] =
  42 {
  43 #define BUILTIN_TRANSFORMATION(From, To, Cost, Name, Fct, BtowcFct, \
  44                                MinF, MaxF, MinT, MaxT) \
  45   {                                                                           \
  46     .name = Name,                                                             \
  47     .fct = Fct,                                                               \
  48     .btowc_fct = BtowcFct,                                                    \
  49                                                                               \
  50     .min_needed_from = MinF,                                                  \
  51     .max_needed_from = MaxF,                                                  \
  52     .min_needed_to = MinT,                                                    \
  53     .max_needed_to = MaxT                                                     \
  54   },
  55 #define BUILTIN_ALIAS(From, To)
  56
  57 #include <gconv_builtin.h>
  58 };
  59
  60
  61 void
  62 __gconv_get_builtin_trans (const char *name, struct __gconv_step *step)
  63 {
  64   size_t cnt;
  65
  66   for (cnt = 0; cnt < sizeof (map) / sizeof (map[0]); ++cnt)
  67     if (strcmp (name, map[cnt].name) == 0)
  68       break;
  69
  70   assert (cnt < sizeof (map) / sizeof (map[0]));
  71
  72   step->__fct = map[cnt].fct;
  73   step->__btowc_fct = map[cnt].btowc_fct;
  74   step->__init_fct = NULL;
  75   step->__end_fct = NULL;
  76   step->__shlib_handle = NULL;
  77   step->__modname = NULL;
  78
  79   step->__min_needed_from = map[cnt].min_needed_from;
  80   step->__max_needed_from = map[cnt].max_needed_from;
  81   step->__min_needed_to = map[cnt].min_needed_to;
  82   step->__max_needed_to = map[cnt].max_needed_to;
  83
  84   /* None of the builtin converters handles stateful encoding.  */
  85   step->__stateful = 0;
  86 }