+++ /dev/null
-/*
- * 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;
-}
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