/* Access functions for CNS 11643, plane 1 handling. Copyright (C) 1998, 1999 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. */ #include <stdint.h> #include <gconv.h> /* Table for CNS 11643, plane 1 to UCS4 conversion. */ extern const uint16_t __cns11643l1_to_ucs4_tab[]; static inline uint32_t cns11643l1_to_ucs4 (const unsigned 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) > 0x7d) 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 > 0x2196) return __UNKNOWN_10646_CHAR; (*s) += 2; return __cns11643l1_to_ucs4_tab[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR); } /* Tables for the UCS4 -> CNS conversion. */ extern const char __cns11643l1_from_ucs4_tab1[][2]; extern const char __cns11643l1_from_ucs4_tab2[][2]; extern const char __cns11643l1_from_ucs4_tab3[][2]; extern const char __cns11643l1_from_ucs4_tab4[][2]; extern const char __cns11643l1_from_ucs4_tab5[][2]; extern const char __cns11643l1_from_ucs4_tab6[][2]; extern const char __cns11643l1_from_ucs4_tab7[][2]; extern const char __cns11643l1_from_ucs4_tab8[][2]; extern const char __cns11643l1_from_ucs4_tab9[][2]; extern const char __cns11643l1_from_ucs4_tab10[][2]; extern const char __cns11643l1_from_ucs4_tab11[][2]; extern const char __cns11643l1_from_ucs4_tab12[][2]; extern const char __cns11643l1_from_ucs4_tab13[][2]; extern const char __cns11643l1_from_ucs4_tab14[][2]; static inline size_t ucs4_to_cns11643l1 (uint32_t wch, unsigned char *s, size_t avail) { unsigned int ch = (unsigned int) wch; char buf[2]; const char *cp = buf; switch (ch) { case 0xa7 ... 0xf7: cp = __cns11643l1_from_ucs4_tab1[ch - 0xa7]; break; case 0x2c7 ... 0x2d9: cp = __cns11643l1_from_ucs4_tab2[ch - 0x2c7]; break; case 0x391 ... 0x3c9: cp = __cns11643l1_from_ucs4_tab3[ch - 0x391]; break; case 0x2013 ... 0x203e: cp = __cns11643l1_from_ucs4_tab4[ch - 0x2013]; break; case 0x2103: cp = "\x22\x6a"; break; case 0x2105: cp = "\x22\x22"; break; case 0x2109: cp = "\x22\x6b"; break; case 0x2160 ... 0x2169: buf[0] = '\x24'; buf[1] = '\x2b' + (ch - 0x2160); break; case 0x2170 ... 0x2179: buf[0] = '\x26'; buf[1] = '\x35' + (ch - 0x2170); break; case 0x2190 ... 0x2199: cp = __cns11643l1_from_ucs4_tab5[ch - 0x2190]; break; case 0x2215 ... 0x2267: cp = __cns11643l1_from_ucs4_tab6[ch - 0x2215]; break; case 0x22a5: cp = "\x22\x47"; break; case 0x22bf: cp = "\x22\x4a"; break; case 0x2400 ... 0x2421: cp = __cns11643l1_from_ucs4_tab7[ch - 0x2400]; break; case 0x2460 ... 0x247d: cp = __cns11643l1_from_ucs4_tab8[ch - 0x2460]; break; case 0x2500 ... 0x2642: cp = __cns11643l1_from_ucs4_tab9[ch - 0x2500]; break; case 0x3000 ... 0x3029: cp = __cns11643l1_from_ucs4_tab10[ch - 0x3000]; break; case 0x30fb: cp = "\x21\x26"; break; case 0x3105 ... 0x3129: buf[0] = '\x25'; buf[1] = '\x26' + (ch - 0x3105); break; case 0x32a3: cp = "\x22\x21"; break; case 0x338e ... 0x33d5: cp = __cns11643l1_from_ucs4_tab11[ch - 0x338e]; break; case 0x4e00 ... 0x9f9c: cp = __cns11643l1_from_ucs4_tab12[ch - 0x4e00]; break; case 0xfe30 ... 0xfe6b: cp = __cns11643l1_from_ucs4_tab13[ch - 0xfe30]; break; case 0xff01 ... 0xff5d: cp = __cns11643l1_from_ucs4_tab14[ch - 0xff01]; break; case 0xffe0: cp = "\x22\x66"; break; case 0xffe1: cp = "\x22\x67"; break; case 0xffe5: cp = "\x22\x64"; break; default: return __UNKNOWN_10646_CHAR; } if (cp[0] == '\0') return __UNKNOWN_10646_CHAR; if (avail < 2) return 0; s[0] = cp[0]; s[1] = cp[1]; return 2; }