/* * Copyright (C) 1999-2001 Free Software Foundation, Inc. * This file is part of the GNU LIBICONV Library. * * The GNU LIBICONV 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 LIBICONV 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 LIBICONV 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. */ /* * ISO-IR-165 */ /* * ISO-IR-165 is an extension of GB 2312, consisting of: * 1. GB 6345.1-86 corrections: * Two corrections to GB 2312, at 0x2367 and 0x6F71. * 2. GB 6345.1-86 additions: * - 6 new full-width pinyin characters in row 0x28. * - ISO646-CN in row 0x2A. * - 32 half-width pinyin characters in row 0x2B. * 3. GB 8565.2-88 additions: * - 50 characters in row 0x2D. * - 92 characters in row 0x2E. * - 93 characters in row 0x2F. * - 470 characters in rows 0x7A-0x7E. * 4. ISO-IR-165 additions: * - 22 characters in row 0x26. * - 94 characters in row 0x2C. * - 44 new characters in row 0x2D. * - 1 new character in row 0x2F. * * The conversion table was created from the following sources: * Ad 1. The 0x2367 correction is already integrated in the unicode.org * GB2312.TXT table. The 0x6F71 mapping is the same in the unicode.org * GB2312.TXT and UNIHAN.TXT table and in Koichi Yasuoka's Uni2GB table, * so we assume it's correct. * The unicode.org UNIHAN.TXT table about GB 8565 is not usable: it has * extraneous code points at rows 0x28, 0x2C, 0x2D. Note also that it does * not list the 69 non-hanzi in row 0x2F. Moreover, it has the characters * 0x2F7A-0x2F7D shifted down by one to 0x2F79-0x2F7C. * Therefore we take the GB8565 and ISO-IR-165 data from Koichi Yasuoka's * Uni2GB table. * Ad 1. Yasuoka maps 0x2367 to U+0261 (small script g) and 0x2840 to U+FF47 * (full-width small normal g). While coherent with ISO-IR's 165.pdf, * this disagrees with Ken Lunde's book: He says that ISO-IR-165 * includes the GB6345 correction, i.e. maps 0x2367 to U+FF47 or U+0067 * and _not_ to U+0261 (small script g). * To overcome the confusion, we just map both 0x2367 and 0x2840 to * U+FF47. * Ad 2. Row 0x28: Add a mapping from 0x283F to U+01F9. * Row 0x2A: Mapping is well-known, also present in Koichi Yasuoka's * table. * Row 0x2B: Typed in by hand from appendix E in Ken Lunde's book. * When converting from Unicode to ISO-IR-165, prefer the half-width * range 0x2B{21..40} to the full-width range 0x28{21..40}. * Ad 3. Rows 0x2D, 0x2E: Both Koichi Yasuoka's Uni2GB table and the UNIHAN.TXT * data for GB 8565 agree here. * Row 0x2F: Taken from Koichi Yasuoka's Uni2GB table. * Rows 0x7A-0x7E: Koichi Yasuoka's Uni2GB table and the UNIHAN.TXT * data for GB 8565 agree here mostly. Differences: * 0x7C38 -> U+6F26 or U+527A ? We choose U+6F26. * 0x7C5A -> U+7A40 or U+6996 ? We choose U+6996. * Ad 4. Row 0x26: Mapping unknown. * Rows 0x2C, 0x2D: Both Koichi Yasuoka's Uni2GB table and the UNIHAN.TXT * data for GB 8565 (!) agree here. * Row 0x2F: Taken from Koichi Yasuoka's Uni2GB table. */ #include "isoir165ext.h" static int isoir165_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) { int ret; /* Map full-width pinyin (row 0x28) like half-width pinyin (row 0x2B). */ if (s[0] == 0x28) { if (n >= 2) { unsigned char c2 = s[1]; if (c2 >= 0x21 && c2 <= 0x40) { unsigned char buf[2]; buf[0] = 0x2b; buf[1] = c2; ret = isoir165ext_mbtowc(conv,pwc,buf,2); if (ret != RET_ILSEQ) return ret; } } } /* Try the GB2312 -> Unicode table. */ ret = gb2312_mbtowc(conv,pwc,s,n); if (ret != RET_ILSEQ) return ret; /* Row 0x2A is GB_1988-80. */ if (s[0] == 0x2a) { if (n >= 2) { unsigned char c2 = s[1]; if (c2 >= 0x21 && c2 < 0x7f) { int ret = iso646_cn_mbtowc(conv,pwc,s+1,1); if (ret != 1) abort(); return 2; } return RET_ILSEQ; } return RET_TOOFEW(0); } /* Try the ISO-IR-165 extensions -> Unicode table. */ ret = isoir165ext_mbtowc(conv,pwc,s,n); return ret; } static int isoir165_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) { unsigned char buf[1]; int ret; /* Try the Unicode -> GB2312 table table. */ ret = gb2312_wctomb(conv,r,wc,n); if (ret != RET_ILUNI) { if (ret != 2) abort(); if (!(r[0] == 0x28 && r[1] >= 0x21 && r[1] <= 0x40)) return ret; } /* Row 0x2A is GB_1988-80. */ ret = iso646_cn_wctomb(conv,buf,wc,1); if (ret != RET_ILUNI) { if (ret != 1) abort(); if (buf[0] >= 0x21 && buf[0] < 0x7f) { if (n >= 2) { r[0] = 0x2a; r[1] = buf[0]; return 2; } return RET_TOOSMALL; } } /* Try the Unicode -> ISO-IR-165 extensions table. */ ret = isoir165ext_wctomb(conv,r,wc,n); return ret; }