/*
* Copyright (C) 1999-2001, 2005 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., 51 Franklin Street,
* Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*
* EUC-JP
*/
static int
euc_jp_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
{
unsigned char c = *s;
/* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
if (c < 0x80)
return ascii_mbtowc(conv,pwc,s,n);
/* Code set 1 (JIS X 0208) */
if (c >= 0xa1 && c < 0xff) {
if (n < 2)
return RET_TOOFEW(0);
if (c < 0xf5) {
unsigned char c2 = s[1];
if (c2 >= 0xa1 && c2 < 0xff) {
unsigned char buf[2];
buf[0] = c-0x80; buf[1] = c2-0x80;
return jisx0208_mbtowc(conv,pwc,buf,2);
} else
return RET_ILSEQ;
} else {
/* User-defined range. See
* Ken Lunde's "CJKV Information Processing", table 4-66, p. 206. */
unsigned char c2 = s[1];
if (c2 >= 0xa1 && c2 < 0xff) {
*pwc = 0xe000 + 94*(c-0xf5) + (c2-0xa1);
return 2;
} else
return RET_ILSEQ;
}
}
/* Code set 2 (half-width katakana) */
if (c == 0x8e) {
if (n < 2)
return RET_TOOFEW(0);
{
unsigned char c2 = s[1];
if (c2 >= 0xa1 && c2 < 0xe0) {
int ret = jisx0201_mbtowc(conv,pwc,s+1,n-1);
if (ret == RET_ILSEQ)
return RET_ILSEQ;
if (ret != 1) abort();
return 2;
} else
return RET_ILSEQ;
}
}
/* Code set 3 (JIS X 0212-1990) */
if (c == 0x8f) {
if (n < 2)
return RET_TOOFEW(0);
{
unsigned char c2 = s[1];
if (c2 >= 0xa1 && c2 < 0xff) {
if (n < 3)
return RET_TOOFEW(0);
if (c2 < 0xf5) {
unsigned char c3 = s[2];
if (c3 >= 0xa1 && c3 < 0xff) {
unsigned char buf[2];
int ret;
buf[0] = c2-0x80; buf[1] = c3-0x80;
ret = jisx0212_mbtowc(conv,pwc,buf,2);
if (ret == RET_ILSEQ)
return RET_ILSEQ;
if (ret != 2) abort();
return 3;
} else
return RET_ILSEQ;
} else {
/* User-defined range. See
* Ken Lunde's "CJKV Information Processing", table 4-66, p. 206. */
unsigned char c3 = s[2];
if (c3 >= 0xa1 && c3 < 0xff) {
*pwc = 0xe3ac + 94*(c2-0xf5) + (c3-0xa1);
return 3;
} else
return RET_ILSEQ;
}
} else
return RET_ILSEQ;
}
}
return RET_ILSEQ;
}
static int
euc_jp_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
{
unsigned char buf[2];
int ret;
/* Code set 0 (ASCII or JIS X 0201-1976 Roman) */
ret = ascii_wctomb(conv,r,wc,n);
if (ret != RET_ILUNI)
return ret;
/* Code set 1 (JIS X 0208) */
ret = jisx0208_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;
}
/* Code set 2 (half-width katakana) */
ret = jisx0201_wctomb(conv,buf,wc,1);
if (ret != RET_ILUNI && buf[0] >= 0x80) {
if (ret != 1) abort();
if (n < 2)
return RET_TOOSMALL;
r[0] = 0x8e;
r[1] = buf[0];
return 2;
}
/* Code set 3 (JIS X 0212-1990) */
ret = jisx0212_wctomb(conv,buf,wc,2);
if (ret != RET_ILUNI) {
if (ret != 2) abort();
if (n < 3)
return RET_TOOSMALL;
r[0] = 0x8f;
r[1] = buf[0]+0x80;
r[2] = buf[1]+0x80;
return 3;
}
/* Extra compatibility with Shift_JIS. */
if (wc == 0x00a5) {
r[0] = 0x5c;
return 1;
}
if (wc == 0x203e) {
r[0] = 0x7e;
return 1;
}
/* User-defined range. See
* Ken Lunde's "CJKV Information Processing", table 4-66, p. 206. */
if (wc >= 0xe000 && wc < 0xe758) {
if (wc < 0xe3ac) {
unsigned char c1, c2;
if (n < 2)
return RET_TOOSMALL;
c1 = (unsigned int) (wc - 0xe000) / 94;
c2 = (unsigned int) (wc - 0xe000) % 94;
r[0] = c1+0xf5;
r[1] = c2+0xa1;
return 2;
} else {
unsigned char c1, c2;
if (n < 3)
return RET_TOOSMALL;
c1 = (unsigned int) (wc - 0xe3ac) / 94;
c2 = (unsigned int) (wc - 0xe3ac) % 94;
r[0] = 0x8f;
r[1] = c1+0xf5;
r[2] = c2+0xa1;
return 3;
}
}
return RET_ILUNI;
}
