DllExport int VnConvert(int inCharset, int outCharset, UKBYTE *input, UKBYTE *output,
int * pInLen, int * pMaxOutLen)
{
int inLen, maxOutLen;
int ret = -1;
inLen = *pInLen;
maxOutLen = *pMaxOutLen;
if (inLen != -1 && inLen < 0) // invalid inLen
return ret;
VnCharset *pInCharset = VnCharsetLibObj.getVnCharset(inCharset);
VnCharset *pOutCharset = VnCharsetLibObj.getVnCharset(outCharset);
if (!pInCharset || !pOutCharset)
return VNCONV_INVALID_CHARSET;
StringBIStream is(input, inLen, pInCharset->elementSize());
StringBOStream os(output, maxOutLen);
ret = genConvert(*pInCharset, *pOutCharset, is, os);
*pMaxOutLen = os.getOutBytes();
*pInLen = is.left();
return ret;
}
//------------------------------------------------
// Returns:
// 0: successful
// errCode: if failed
//---------------------------------------
int vnFileStreamConvert(int inCharset, int outCharset, FILE * inf, FILE *outf) {
VnCharset *pInCharset = VnCharsetLibObj.getVnCharset(inCharset);
VnCharset *pOutCharset = VnCharsetLibObj.getVnCharset(outCharset);
if (!pInCharset || !pOutCharset)
return VNCONV_INVALID_CHARSET;
if (outCharset == CONV_CHARSET_UNICODE) {
UKWORD sign = 0xFEFF;
fwrite(&sign, sizeof(UKWORD), 1, outf);
}
FileBIStream is;
FileBOStream os;
is.attach(inf);
os.attach(outf);
return genConvert(*pInCharset, *pOutCharset, is, os);
}