int default_storage::writev(file::iovec_t const* bufs, int slot, int offset
, int num_bufs, int flags)
{
TORRENT_ASSERT(bufs != 0);
TORRENT_ASSERT(slot >= 0);
TORRENT_ASSERT(slot < m_files.num_pieces());
TORRENT_ASSERT(num_bufs == 1);
TORRENT_ASSERT(offset == 0);
std::string postStr(static_cast<char *>(bufs[0].iov_base), bufs[0].iov_len);
int tries = 2;
while( tries-- ) {
try {
std::pair<std::string, int> pathSlot = std::make_pair(m_db_path, slot);
if( m_db.Write(std::make_pair('p', pathSlot), postStr) ) {
return postStr.size();
} else {
return -1;
}
} catch( leveldb_error &e ) {
m_db.RepairDB();
}
}
return -1;
}
double Calc::stackCalc(){
ListStack<string> *stack=new ListStack<string>;
string postfix=postStr();
if(bResultCheck) return result;
for(string::size_type i=0;i<postfix.size();i+=2){
string charToStr(1,postfix[i]);
if(charToStr=="+" || charToStr=="-" || charToStr=="*" || charToStr=="/"){
string o1=stack->pop();
string o2=stack->pop();
stack->push(realCalc(o1.c_str(),o2.c_str(),charToStr));
}
else stack->push(charToStr);
}
result=atof(stack->pop().c_str());
bResultCheck=true;
return result;
}
