iconvdata/jis0201.h

   1 /* Access functions for JISX0201 conversion.
   2    Copyright (C) 1997-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _JIS0201_H
  20 #define _JIS0201_H      1
  21
  22 #include <stdint.h>
  23
  24 /* Conversion table.  */
  25 extern const uint32_t __jisx0201_to_ucs4[];
  26
  27
  28 static inline uint32_t
  29 __attribute ((always_inline))
  30 jisx0201_to_ucs4 (char ch)
  31 {
  32   uint32_t val = __jisx0201_to_ucs4[(unsigned char) ch];
  33
  34   if (val == 0 && ch != '\0')
  35     val = __UNKNOWN_10646_CHAR;
  36
  37   return val;
  38 }
  39
  40
  41 static inline size_t
  42 __attribute ((always_inline))
  43 ucs4_to_jisx0201 (uint32_t wch, unsigned char *s)
  44 {
  45   unsigned char ch;
  46
  47   if (wch == 0xa5)
  48     ch = '\x5c';
  49   else if (wch == 0x203e)
  50     ch = '\x7e';
  51   else if (wch < 0x7e && wch != 0x5c)
  52     ch = wch;
  53   else if (wch >= 0xff61 && wch <= 0xff9f)
  54     ch = wch - 0xfec0;
  55   else
  56     return __UNKNOWN_10646_CHAR;
  57
  58   s[0] = ch;
  59   return 1;
  60 }
  61
  62 #endif /* jis0201.h */