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Diffstat (limited to 'iconvdata/gb2312.h')
| -rw-r--r-- | iconvdata/gb2312.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/iconvdata/gb2312.h b/iconvdata/gb2312.h new file mode 100644 index 0000000..b875736 --- /dev/null +++ b/iconvdata/gb2312.h @@ -0,0 +1,185 @@ +/* Access functions for GB2312 conversion. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _GB2312_H +#define _GB2312_H 1 + +#include <gconv.h> +#include <stdint.h> + +/* Conversion table. */ +extern const uint16_t gb2312_to_ucs[]; + + +static inline wchar_t +gb2312_to_ucs4 (const char **s, size_t avail, unsigned char offset) +{ + unsigned char ch = *(*s); + unsigned char ch2; + int idx; + + if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x77) + return UNKNOWN_10646_CHAR; + + if (avail < 2) + return 0; + + ch2 = (*s)[1]; + if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f) + return UNKNOWN_10646_CHAR; + + idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset); + if (idx >= 0x1ff1) + return UNKNOWN_10646_CHAR; + + (*s) += 2; + + return gb2312_to_ucs[idx] ?: ((*s) -= 2, UNKNOWN_10646_CHAR); +} + + +extern const char gb2312_from_ucs4_tab1[][2]; +extern const char gb2312_from_ucs4_tab2[][2]; +extern const char gb2312_from_ucs4_tab3[][2]; +extern const char gb2312_from_ucs4_tab4[][2]; +extern const char gb2312_from_ucs4_tab5[][2]; +extern const char gb2312_from_ucs4_tab6[][2]; +extern const char gb2312_from_ucs4_tab7[][2]; +extern const char gb2312_from_ucs4_tab8[][2]; +extern const char gb2312_from_ucs4_tab9[][2]; + +static inline size_t +ucs4_to_gb2312 (wchar_t wch, char *s, size_t avail) +{ + unsigned int ch = (unsigned int) wch; + char buf[2]; + const char *cp = NULL; + + if (ch < 0xa4) + cp = NULL; + else if (ch < 0x101) + cp = gb2312_from_ucs4_tab1[ch - 0xa4]; + else if (ch == 0x113) + cp = "\x28\x25"; + else if (ch == 0x11b) + cp = "\x28\x27"; + else if (ch == 0x12b) + cp = "\x28\x29"; + else if (ch == 0x14d) + cp = "\x28\x2d"; + else if (ch == 0x16b) + cp = "\x28\x31"; + else if (ch == 0x1ce) + cp = "\x28\x23"; + else if (ch == 0x1d0) + cp = "\x28\x2b"; + else if (ch == 0x1d2) + cp = "\x28\x2f"; + else if (ch == 0x1d4) + cp = "\x28\x33"; + else if (ch == 0x1d6) + cp = "\x28\x35"; + else if (ch == 0x1d8) + cp = "\x28\x36"; + else if (ch == 0x1da) + cp = "\x28\x37"; + else if (ch == 0x1dc) + cp = "\x28\x38"; + else if (ch == 0x2c7) + cp = "\x21\x26"; + else if (ch == 0x2c9) + cp = "\x21\x25"; + else if (ch >= 0x391 && ch <= 0x3c9) + cp = gb2312_from_ucs4_tab2[ch - 0x391]; + else if (ch >= 0x401 && ch <= 0x451) + cp = gb2312_from_ucs4_tab3[ch - 0x401]; + else if (ch >= 0x2015 && ch <= 0x203b) + cp = gb2312_from_ucs4_tab4[ch - 0x2015]; + else if (ch >= 0x2103 && ch <= 0x22a5) + cp = gb2312_from_ucs4_tab5[ch - 0x2103]; + else if (ch == 0x2313) + cp = "\x21\x50"; + else if (ch >= 0x2460 && ch <= 0x249b) + cp = gb2312_from_ucs4_tab6[ch - 0x2460]; + else if (ch >= 0x2500 && ch <= 0x254b) + { + buf[0] = '\x29'; + buf[1] = '\x24' + (ch & 256); + cp = buf; + } + else if (ch == 0x25a0) + cp = "\x21\x76"; + else if (ch == 0x25a1) + cp = "\x21\x75"; + else if (ch == 0x25b2) + cp = "\x21\x78"; + else if (ch == 0x25b3) + cp = "\x21\x77"; + else if (ch == 0x25c6) + cp = "\x21\x74"; + else if (ch == 0x25c7) + cp = "\x21\x73"; + else if (ch == 0x25cb) + cp = "\x21\x70"; + else if (ch == 0x25ce) + cp = "\x21\x72"; + else if (ch == 0x25cf) + cp = "\x21\x71"; + else if (ch == 0x2605) + cp = "\x21\x6f"; + else if (ch == 0x2606) + cp = "\x21\x6e"; + else if (ch == 0x2640) + cp = "\x21\x62"; + else if (ch == 0x2642) + cp = "\x21\x61"; + else if (ch >= 0x3000 && ch <= 0x3129) + cp = gb2312_from_ucs4_tab7[ch - 0x3000]; + else if (ch >= 0x3220 && ch <= 0x3229) + { + buf[0] = '\x22'; + buf[1] = '\x65' + (ch - 0x3220); + cp = buf; + } + else if (ch >= 0x4e00 && ch <= 0x9fa0) + cp = gb2312_from_ucs4_tab8[ch - 0x4e00]; + else if (ch >= 0xff01 && ch <= 0xff5e) + cp = gb2312_from_ucs4_tab9[ch - 0xff01]; + else if (ch == 0xffe0) + cp = "\x21\x69"; + else if (ch == 0xffe1) + cp = "\x21\x6a"; + else if (ch == 0xffe3) + cp = "\x23\x7e"; + else if (ch == 0xffe5) + cp = "\x23\x24"; + else + return UNKNOWN_10646_CHAR; + + if (cp[1] != '\0' && avail < 2) + return 0; + + s[0] = cp[0]; + s[1] = cp[1]; + + return 2; +} + +#endif /* gb2312.h */ |