cp936ext.h
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/*
* Copyright (C) 1999-2001, 2016 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, see <http://www.gnu.org/licenses/>.
*/
/*
* CP936 extensions
*/
static const unsigned short cp936ext_2uni_pagea6[181-159] = {
/* 0xa6 */
0xfe35,
0xfe36, 0xfe39, 0xfe3a, 0xfe3f, 0xfe40, 0xfe3d, 0xfe3e, 0xfe41,
0xfe42, 0xfe43, 0xfe44, 0xfffd, 0xfffd, 0xfe3b, 0xfe3c, 0xfe37,
0xfe38, 0xfe31, 0xfffd, 0xfe33, 0xfe34,
};
static const unsigned short cp936ext_2uni_pagea8[128-122] = {
/* 0xa8 */
0x0251, 0xfffd, 0x0144, 0x0148, 0xfffd, 0x0261,
};
static int
cp936ext_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
{
unsigned char c1 = s[0];
if ((c1 == 0xa6) || (c1 == 0xa8)) {
if (n >= 2) {
unsigned char c2 = s[1];
if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0x80 && c2 < 0xff)) {
unsigned int i = 190 * (c1 - 0x81) + (c2 - (c2 >= 0x80 ? 0x41 : 0x40));
unsigned short wc = 0xfffd;
if (i < 7410) {
if (i >= 7189 && i < 7211)
wc = cp936ext_2uni_pagea6[i-7189];
} else {
if (i >= 7532 && i < 7538)
wc = cp936ext_2uni_pagea8[i-7532];
}
if (wc != 0xfffd) {
*pwc = (ucs4_t) wc;
return 2;
}
}
return RET_ILSEQ;
}
return RET_TOOFEW(0);
}
return RET_ILSEQ;
}
static const unsigned short cp936ext_page01[16] = {
0x0000, 0x0000, 0x0000, 0x0000, 0xa8bd, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
0xa8be, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x48-0x4f*/
};
static const unsigned short cp936ext_page02[24] = {
0x0000, 0xa8bb, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x50-0x57*/
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x58-0x5f*/
0x0000, 0xa8c0, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, /*0x60-0x67*/
};
static const unsigned short cp936ext_pagefe[24] = {
0x0000, 0xa6f2, 0x0000, 0xa6f4, 0xa6f5, 0xa6e0, 0xa6e1, 0xa6f0, /*0x30-0x37*/
0xa6f1, 0xa6e2, 0xa6e3, 0xa6ee, 0xa6ef, 0xa6e6, 0xa6e7, 0xa6e4, /*0x38-0x3f*/
0xa6e5, 0xa6e8, 0xa6e9, 0xa6ea, 0xa6eb, 0x0000, 0x0000, 0x0000, /*0x40-0x47*/
};
static int
cp936ext_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
{
if (n >= 2) {
unsigned short c = 0;
if (wc >= 0x0140 && wc < 0x0150)
c = cp936ext_page01[wc-0x0140];
else if (wc >= 0x0250 && wc < 0x0268)
c = cp936ext_page02[wc-0x0250];
else if (wc >= 0xfe30 && wc < 0xfe48)
c = cp936ext_pagefe[wc-0xfe30];
if (c != 0) {
r[0] = (c >> 8); r[1] = (c & 0xff);
return 2;
}
return RET_ILUNI;
}
return RET_TOOSMALL;
}