void toBase64(std::vector<unsigned char>&retval,
const MemoryReference&firstInput,
const MemoryReference&secondInput){
const MemoryReference*refs[2];
refs[0]=&firstInput;
refs[1]=&secondInput;
unsigned int datalen=0;
uint8 data[3];
size_t curPlace=retval.size();
retval.resize(curPlace+conservativeBase64Size(refs[1]->size()+refs[2]->size()));
size_t retvalSize=retval.size();
for (int i=0;i<3;++i) {
const uint8*dat=(const uint8*)refs[i]->data();
uint32 size=refs[i]->size();
for (uint32 j=0;j<size;++j) {
data[datalen++]=dat[j];
if (datalen==3) {
if (retvalSize<=curPlace+5) {
retval.resize(curPlace+5);
}
curPlace+=translateBase64(&*(retval.begin()+curPlace),data,datalen);
datalen=0;
}
}
}
if (datalen) {
if (retvalSize<=curPlace+5) {
retval.resize(curPlace+5);
fprintf(stderr,"conservative size estimate incorrect\n");
}
curPlace+=translateBase64(&*(retval.begin()+curPlace),data,datalen);
}
retval.resize(curPlace);
}
Chunk* ASIOSocketWrapper::toBase64ZeroDelim(const MemoryReference&a, const MemoryReference&b, const MemoryReference&c, const MemoryReference*rawBytesToPrepend) {
const MemoryReference*refs[3];
refs[0]=&a;
refs[1]=&b;
refs[2]=&c;
unsigned int datalen=0;
uint8 data[3];
Chunk * retval= new Chunk((rawBytesToPrepend?rawBytesToPrepend->size():0)+conservativeBase64Size(a.size()+b.size()+c.size())+2);
Chunk::iterator prependStart=retval->begin();
*(prependStart++)='\0';//frame start
if (rawBytesToPrepend) {
memcpy(&*prependStart,rawBytesToPrepend->data(),rawBytesToPrepend->size());
prependStart+=rawBytesToPrepend->size();
}
size_t retvalSize=retval->size();
unsigned int curPlace=(unsigned int)(prependStart-retval->begin());
for (int i=0; i<3; ++i) {
const uint8*dat=(const uint8*)refs[i]->data();
uint32 size=refs[i]->size();
for (uint32 j=0; j<size; ++j) {
data[datalen++]=dat[j];
if (datalen==3) {
if (retvalSize<=curPlace+5) {
retval->resize(curPlace+5);
}
curPlace+=translateBase64(&*(retval->begin()+curPlace),data,datalen);
datalen=0;
}
}
}
if (datalen) {
if (retvalSize<=curPlace+5) {
retval->resize(curPlace+5);
SILOG(tcpsst,error,"conservative size estimate incorrect");
}
curPlace+=translateBase64(&*(retval->begin()+curPlace),data,datalen);
}
(*retval)[curPlace]=0xff;//0xff DELIMITED
retval->resize(curPlace+1);
return retval;
}
