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/******************************************************************************
*
* utf8nfkd - SWFilter descendant to perform NFKD (compatability decomposition
* normalization) on UTF-8 text
*/
#ifdef _ICU_
#include <stdlib.h>
#include <utilstr.h>
#include <utf8nfkd.h>
#include <swbuf.h>
SWORD_NAMESPACE_START
UTF8NFKD::UTF8NFKD() {
conv = ucnv_open("UTF-8", &err);
}
UTF8NFKD::~UTF8NFKD() {
ucnv_close(conv);
}
char UTF8NFKD::processText(SWBuf &text, const SWKey *key, const SWModule *module)
{
if ((unsigned long)key < 2) // hack, we're en(1)/de(0)ciphering
return -1;
int32_t len = 5 + text.length() * 5;
source = new UChar[len + 1]; //each char could become a surrogate pair
// Convert UTF-8 string to UTF-16 (UChars)
int32_t ulen = ucnv_toUChars(conv, source, len, text.c_str(), -1, &err);
target = new UChar[len + 1];
//compatability decomposition
ulen = unorm_normalize(source, ulen, UNORM_NFKD, 0, target, len, &err);
text.setSize(len);
len = ucnv_fromUChars(conv, text.getRawData(), len, target, ulen, &err);
text.setSize(len);
delete [] source;
delete [] target;
return 0;
}
SWORD_NAMESPACE_END
#endif
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