1 /* Access functions for JISX0208 conversion.
2 Copyright (C) 1997,1998,1999,2000,2003,2005,2007
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
7 The GNU C Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation; either
10 version 2.1 of the License, or (at your option) any later version.
12 The GNU C Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public
18 License along with the GNU C Library; if not, write to the Free
19 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
28 /* Struct for table with indeces in UCS mapping table. */
29 struct jisx0208_ucs_idx
37 /* Conversion table. */
38 extern const uint16_t __jis0208_to_ucs[];
40 #define JIS0208_LAT1_MIN 0xa2
41 #define JIS0208_LAT1_MAX 0xf7
42 extern const char __jisx0208_from_ucs4_lat1[JIS0208_LAT1_MAX + 1
43 - JIS0208_LAT1_MIN][2];
44 extern const char __jisx0208_from_ucs4_greek[0xc1][2];
45 extern const struct jisx0208_ucs_idx __jisx0208_from_ucs_idx[];
46 extern const char __jisx0208_from_ucs_tab[][2];
49 static inline uint32_t
50 __attribute ((always_inline))
51 jisx0208_to_ucs4 (const unsigned char **s, size_t avail, unsigned char offset)
53 unsigned char ch = *(*s);
57 if (ch < offset || (ch - offset) <= 0x20)
58 return __UNKNOWN_10646_CHAR;
64 if (ch2 < offset || (ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f)
65 return __UNKNOWN_10646_CHAR;
67 idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset);
69 return __UNKNOWN_10646_CHAR;
73 return __jis0208_to_ucs[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR);
78 __attribute ((always_inline))
79 ucs4_to_jisx0208 (uint32_t wch, unsigned char *s, size_t avail)
81 unsigned int ch = (unsigned int) wch;
87 if (ch >= JIS0208_LAT1_MIN && ch <= JIS0208_LAT1_MAX)
88 cp = __jisx0208_from_ucs4_lat1[ch - JIS0208_LAT1_MIN];
89 else if (ch >= 0x391 && ch <= 0x451)
90 cp = __jisx0208_from_ucs4_greek[ch - 0x391];
93 const struct jisx0208_ucs_idx *rp = __jisx0208_from_ucs_idx;
96 return __UNKNOWN_10646_CHAR;
100 cp = __jisx0208_from_ucs_tab[rp->idx + ch - rp->start];
102 return __UNKNOWN_10646_CHAR;
106 return __UNKNOWN_10646_CHAR;
114 #endif /* jis0208.h */