static int
XConvertEucKrToUtf8(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 (c1 >= 0xa1 && c1 < 0xff) {
unsigned char b[2];
b[0] = c - 0x80;
b[1] = c1 - 0x80;
if (ksc5601_mbtowc(NULL, &ucs, b, 2) < 1) {
ucs = '?';
}
} else {
ucs = '?';
}
i += 2;
} else {
ucs = '?';
i++;
}
l += XConvertUcsToUtf8(ucs, buffer_return + l);
}
free(buf);
return l;
}
int
iso2022_kr_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
{
state_t state = conv->istate;
SPLIT_STATE;
int count = 0;
unsigned char c;
for (;;) {
c = *s;
if (c == ESC) {
if (n < count+4)
goto none;
if (s[1] == '$') {
if (s[2] == ')') {
if (s[3] == 'C') {
state2 = STATE2_DESIGNATED_KSC5601;
s += 4; count += 4;
if (n < count+1)
goto none;
continue;
}
}
}
return RET_ILSEQ;
}
if (c == SO) {
if (state2 != STATE2_DESIGNATED_KSC5601)
return RET_ILSEQ;
state1 = STATE_TWOBYTE;
s++; count++;
if (n < count+1)
goto none;
continue;
}
if (c == SI) {
state1 = STATE_ASCII;
s++; count++;
if (n < count+1)
goto none;
continue;
}
break;
}
switch (state1) {
case STATE_ASCII:
if (c < 0x80) {
int ret = ascii_mbtowc(conv,pwc,s,1);
if (ret == RET_ILSEQ)
return RET_ILSEQ;
if (ret != 1) return SIG_ABRT;
#if 0 /* Accept ISO-2022-KR according to CJK.INF. */
if (*pwc == 0x000a || *pwc == 0x000d)
state2 = STATE2_NONE;
#endif
COMBINE_STATE;
conv->istate = state;
return count+1;
} else
return RET_ILSEQ;
case STATE_TWOBYTE:
if (n < count+2)
goto none;
if (state2 != STATE2_DESIGNATED_KSC5601) return SIG_ABRT;
if (s[0] < 0x80 && s[1] < 0x80) {
int ret = ksc5601_mbtowc(conv,pwc,s,2);
if (ret == RET_ILSEQ)
return RET_ILSEQ;
if (ret != 2) return SIG_ABRT;
COMBINE_STATE;
conv->istate = state;
return count+2;
} else
return RET_ILSEQ;
default: return SIG_ABRT;
}
none:
COMBINE_STATE;
conv->istate = state;
return RET_TOOFEW(count);
}
