int
sjis_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
{
unsigned char c = *s;
if (c < 0x80 || (c >= 0xa1 && c <= 0xdf))
return jisx0201_mbtowc(conv,pwc,s,n);
else {
unsigned char s1, s2;
s1 = c;
if ((s1 >= 0x81 && s1 <= 0x9f) || (s1 >= 0xe0 && s1 <= 0xea)) {
if (n < 2)
return RET_TOOFEW(0);
s2 = s[1];
if ((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0x80 && s2 <= 0xfc)) {
unsigned char t1 = (s1 < 0xe0 ? s1-0x81 : s1-0xc1);
unsigned char t2 = (s2 < 0x80 ? s2-0x40 : s2-0x41);
unsigned char buf[2];
buf[0] = 2*t1 + (t2 < 0x5e ? 0 : 1) + 0x21;
buf[1] = (t2 < 0x5e ? t2 : t2-0x5e) + 0x21;
return jisx0208_mbtowc(conv,pwc,buf,2);
}
} else if (s1 >= 0xf0 && s1 <= 0xf9) {
/* User-defined range. See
* Ken Lunde's "CJKV Information Processing", table 4-66, p. 206. */
if (n < 2)
return RET_TOOFEW(0);
s2 = s[1];
if ((s2 >= 0x40 && s2 <= 0x7e) || (s2 >= 0x80 && s2 <= 0xfc)) {
*pwc = 0xe000 + 188*(s1 - 0xf0) + (s2 < 0x80 ? s2-0x40 : s2-0x41);
return 2;
}
}
return RET_ILSEQ;
}
}
static int
XConvertEucJpToUtf8(char* buffer_return, int len)
{
int i = 0, l = 0;
char *buf;
if (len < 1) return 0;
buf = (char*) malloc((unsigned)len);
memcpy(buf, buffer_return, (unsigned)len);
while (i < len) {
unsigned int ucs;
unsigned char c, c1;
c = (unsigned char) buf[i];
if (c < 0x80) {
ucs = c;
i++;
} else if (c >= 0xA1 && c < 0xFF && len - i > 1) {
c1 = (unsigned char) buf[i + 1];
if (c < 0xF5 && c1 >= 0xa1) {
unsigned char b[2];
b[0] = c - 0x80;
b[1] = c1 - 0x80;
if (jisx0208_mbtowc(NULL, &ucs, b, 2) < 1) {
ucs = '?';
}
} else if (c1 >= 0xA1 && c1 < 0xFF) {
ucs = 0xE000 + 94 * (c - 0xF5) + (c1 - 0xA1);
} else {
ucs = '?';
}
i += 2;
} else if (c == 0x8E && len - i > 1) {
c1 = (unsigned char) buf[i + 1];
if (c1 >= 0xa1 && c1 <= 0xe0) {
if (jisx0201_mbtowc(NULL, &ucs, &c1, 1) != 1) {
ucs = '?';
}
} else {
ucs = '?';
}
i += 2;
} else if (c == 0x8F && len - i > 2) {
c = (unsigned char) buf[i + 1];
c1 = (unsigned char) buf[i + 2];
if (c >= 0xa1 && c < 0xff) {
if (c < 0xf5 && c1 >= 0xa1 && c1 < 0xff) {
unsigned char b[2];
b[0] = c - 0x80;
b[1] = c1 - 0x80;
if (jisx0212_mbtowc(NULL, &ucs, b, 2) < 1) {
ucs = '?';
}
} else {
ucs = '?';
}
} else {
if (c1 >= 0xa1 && c1 < 0xff) {
ucs = 0xe3ac + 94 * (c - 0xF5) + (c1 - 0xA1);
} else {
ucs = '?';
}
}
i += 3;
} else {
ucs = '?';
i++;
}
l += XConvertUcsToUtf8(ucs, buffer_return + l);
}
free(buf);
return l;
}
