iconvdata/jisx0213.h

   1 /* Functions for JISX0213 conversion.
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Bruno Haible <bruno@clisp.org>, 2002.
   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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _JISX0213_H
  22 #define _JISX0213_H     1
  23
  24 #include <stdint.h>
  25
  26 extern const uint16_t __jisx0213_to_ucs_combining[][2];
  27 extern const uint16_t __jisx0213_to_ucs_main[120 * 94];
  28 extern const uint32_t __jisx0213_to_ucs_pagestart[];
  29 extern const int16_t __jisx0213_from_ucs_level1[2715];
  30 extern const uint16_t __jisx0213_from_ucs_level2[];
  31
  32 #define NELEMS(arr) (sizeof (arr) / sizeof (arr[0]))
  33
  34 static inline uint32_t
  35 jisx0213_to_ucs4 (unsigned int row, unsigned int col)
  36 {
  37   uint32_t val;
  38
  39   if (row >= 0x121 && row <= 0x17e)
  40     row -= 289;
  41   else if (row == 0x221)
  42     row -= 451;
  43   else if (row >= 0x223 && row <= 0x225)
  44     row -= 452;
  45   else if (row == 0x228)
  46     row -= 454;
  47   else if (row >= 0x22c && row <= 0x22f)
  48     row -= 457;
  49   else if (row >= 0x26e && row <= 0x27e)
  50     row -= 519;
  51   else
  52     return 0x0000;
  53
  54   if (col >= 0x21 && col <= 0x7e)
  55     col -= 0x21;
  56   else
  57     return 0x0000;
  58
  59   val = __jisx0213_to_ucs_main[row * 94 + col];
  60   val = __jisx0213_to_ucs_pagestart[val >> 8] + (val & 0xff);
  61   if (val == 0xfffd)
  62     val = 0x0000;
  63   return val;
  64 }
  65
  66 static inline uint16_t
  67 ucs4_to_jisx0213 (uint32_t ucs)
  68 {
  69   if (ucs < NELEMS (__jisx0213_from_ucs_level1) << 6)
  70     {
  71       int index1 = __jisx0213_from_ucs_level1[ucs >> 6];
  72       if (index1 >= 0)
  73         return __jisx0213_from_ucs_level2[(index1 << 6) + (ucs & 0x3f)];
  74     }
  75   return 0x0000;
  76 }
  77
  78 #endif /* _JISX0213_H */