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 */