cp949.h
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/*
* Copyright (C) 1999-2001, 2005, 2007, 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/>.
*/
/*
* CP949 is EUC-KR, extended with UHC (Unified Hangul Code).
*
* Some variants of CP949 (in JDK, Windows-2000, ICU) also add:
*
* 2. Private area mappings:
*
* code Unicode
* 0xC9{A1..FE} U+E000..U+E05D
* 0xFE{A1..FE} U+E05E..U+E0BB
*
* We add them too because, although there are backward compatibility problems
* when a character from a private area is moved to an official Unicode code
* point, they are useful for some people in practice.
*/
#include "uhc_1.h"
#include "uhc_2.h"
static int
cp949_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, size_t n)
{
unsigned char c = *s;
/* Code set 0 (ASCII) */
if (c < 0x80)
return ascii_mbtowc(conv,pwc,s,n);
/* UHC part 1 */
if (c >= 0x81 && c <= 0xa0)
return uhc_1_mbtowc(conv,pwc,s,n);
if (c >= 0xa1 && c < 0xff) {
if (n < 2)
return RET_TOOFEW(0);
{
unsigned char c2 = s[1];
if (c2 < 0xa1)
/* UHC part 2 */
return uhc_2_mbtowc(conv,pwc,s,n);
else if (c2 < 0xff && !(c == 0xa2 && c2 == 0xe8)) {
/* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
unsigned char buf[2];
int ret;
buf[0] = c-0x80; buf[1] = c2-0x80;
ret = ksc5601_mbtowc(conv,pwc,buf,2);
if (ret != RET_ILSEQ)
return ret;
/* User-defined characters */
if (c == 0xc9) {
*pwc = 0xe000 + (c2 - 0xa1);
return 2;
}
if (c == 0xfe) {
*pwc = 0xe05e + (c2 - 0xa1);
return 2;
}
}
}
}
return RET_ILSEQ;
}
static int
cp949_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, size_t n)
{
unsigned char buf[2];
int ret;
/* Code set 0 (ASCII) */
ret = ascii_wctomb(conv,r,wc,n);
if (ret != RET_ILUNI)
return ret;
/* Code set 1 (KS C 5601-1992, now KS X 1001:1998) */
if (wc != 0x327e) {
ret = ksc5601_wctomb(conv,buf,wc,2);
if (ret != RET_ILUNI) {
if (ret != 2) abort();
if (n < 2)
return RET_TOOSMALL;
r[0] = buf[0]+0x80;
r[1] = buf[1]+0x80;
return 2;
}
}
/* UHC */
if (wc >= 0xac00 && wc < 0xd7a4) {
if (wc < 0xc8a5)
return uhc_1_wctomb(conv,r,wc,n);
else
return uhc_2_wctomb(conv,r,wc,n);
}
/* User-defined characters */
if (wc >= 0xe000 && wc < 0xe0bc) {
if (n < 2)
return RET_TOOSMALL;
if (wc < 0xe05e) {
r[0] = 0xc9;
r[1] = wc - 0xe000 + 0xa1;
} else {
r[0] = 0xfe;
r[1] = wc - 0xe05e + 0xa1;
}
return 2;
}
return RET_ILUNI;
}