/* rewind the buf and file stream */
U_CAPI void U_EXPORT2
ucbuf_rewind(UCHARBUF* buf,UErrorCode* error){
if(error==NULL || U_FAILURE(*error)){
return;
}
if(buf){
buf->currentPos=buf->buffer;
buf->bufLimit=buf->buffer;
T_FileStream_rewind(buf->in);
buf->remaining=T_FileStream_size(buf->in)-buf->signatureLength;
ucnv_resetToUnicode(buf->conv);
if(buf->signatureLength>0) {
UChar target[1]={ 0 };
UChar* pTarget;
char start[8];
const char* pStart;
int32_t numRead;
/* read the signature bytes */
numRead=T_FileStream_read(buf->in, start, buf->signatureLength);
/* convert and ignore initial U+FEFF, and the buffer overflow */
pTarget = target;
pStart = start;
ucnv_toUnicode(buf->conv, &pTarget, target+1, &pStart, start+numRead, NULL, FALSE, error);
if(*error==U_BUFFER_OVERFLOW_ERROR) {
*error=U_ZERO_ERROR;
}
/* verify that we successfully read exactly U+FEFF */
if(U_SUCCESS(*error) && (numRead!=buf->signatureLength || pTarget!=(target+1) || target[0]!=0xfeff)) {
*error=U_INTERNAL_PROGRAM_ERROR;
}
}
}
}
static void NativeConverter_resetByteToChar(JNIEnv*, jclass, jlong address) {
UConverter* cnv = toUConverter(address);
if (cnv) {
ucnv_resetToUnicode(cnv);
}
}
