forked from mia/Aegisub
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
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/*
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* Copyright (C) 1999-2001 Free Software Foundation, Inc.
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* This file is part of the GNU LIBICONV Library.
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*
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* The GNU LIBICONV Library is free software; you can redistribute it
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* and/or modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* The GNU LIBICONV Library is distributed in the hope that it will be
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* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with the GNU LIBICONV Library; see the file COPYING.LIB.
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* If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
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* Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/*
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* CP936 extensions
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*/
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static const unsigned short cp936ext_2uni_pagea6[181-159] = {
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/* 0xa6 */
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0xfe35,
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0xfe36, 0xfe39, 0xfe3a, 0xfe3f, 0xfe40, 0xfe3d, 0xfe3e, 0xfe41,
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0xfe42, 0xfe43, 0xfe44, 0xfffd, 0xfffd, 0xfe3b, 0xfe3c, 0xfe37,
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0xfe38, 0xfe31, 0xfffd, 0xfe33, 0xfe34,
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};
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static const unsigned short cp936ext_2uni_pagea8[128-122] = {
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/* 0xa8 */
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0x0251, 0xfffd, 0x0144, 0x0148, 0xfffd, 0x0261,
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};
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static int
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cp936ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
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{
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unsigned char c1 = s[0];
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if ((c1 == 0xa6) || (c1 == 0xa8)) {
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if (n >= 2) {
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unsigned char c2 = s[1];
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if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xff)) {
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unsigned int i = 190 * (c1 - 0x81) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
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unsigned short wc = 0xfffd;
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if (i < 7410) {
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if (i >= 7189 && i < 7211)
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wc = cp936ext_2uni_pagea6[i-7189];
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} else {
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if (i >= 7532 && i < 7538)
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wc = cp936ext_2uni_pagea8[i-7532];
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}
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if (wc != 0xfffd) {
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*pwc = (ucs4_t) wc;
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return 2;
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}
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}
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return RET_ILSEQ;
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}
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return RET_TOOFEW(0);
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}
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return RET_ILSEQ;
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}
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static const unsigned short cp936ext_page01[16] = {
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0x0000, 0x0000, 0x0000, 0x0000, 0xa8bd, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
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0xa8be, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x48-0x4f*/
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};
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static const unsigned short cp936ext_page02[24] = {
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0x0000, 0xa8bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x50-0x57*/
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0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x58-0x5f*/
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0x0000, 0xa8c0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x60-0x67*/
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};
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static const unsigned short cp936ext_pagefe[24] = {
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0x0000, 0xa6f2, 0x0000, 0xa6f4, 0xa6f5, 0xa6e0, 0xa6e1, 0xa6f0, /*0x30-0x37*/
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0xa6f1, 0xa6e2, 0xa6e3, 0xa6ee, 0xa6ef, 0xa6e6, 0xa6e7, 0xa6e4, /*0x38-0x3f*/
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0xa6e5, 0xa6e8, 0xa6e9, 0xa6ea, 0xa6eb, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
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};
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static int
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cp936ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
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{
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if (n >= 2) {
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unsigned short c = 0;
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if (wc >= 0x0140 && wc < 0x0150)
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c = cp936ext_page01[wc-0x0140];
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else if (wc >= 0x0250 && wc < 0x0268)
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c = cp936ext_page02[wc-0x0250];
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else if (wc >= 0xfe30 && wc < 0xfe48)
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c = cp936ext_pagefe[wc-0xfe30];
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if (c != 0) {
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r[0] = (c >> 8); r[1] = (c & 0xff);
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return 2;
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}
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return RET_ILUNI;
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}
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return RET_TOOSMALL;
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}
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