void SingleDataChecker::check(const QString& path, const Torrent& tor,const QString &)
{
// open the file
Uint32 num_chunks = tor.getNumChunks();
Uint32 chunk_size = tor.getChunkSize();
File fptr;
if (!fptr.open(path,"rb"))
{
throw Error(i18n("Cannot open file : %1 : %2")
.arg(path).arg( fptr.errorString()));
}
// initialize the bitsets
downloaded = BitSet(num_chunks);
failed = BitSet(num_chunks);
TimeStamp last_update_time = bt::GetCurrentTime();
// loop over all chunks
Array<Uint8> buf(chunk_size);
for (Uint32 i = 0;i < num_chunks;i++)
{
if (listener)
{
listener->progress(i,num_chunks);
if (listener->needToStop()) // if we need to stop just return
return;
}
TimeStamp now = bt::GetCurrentTime();
if (now - last_update_time > 1000)
{
Out(SYS_DIO|LOG_DEBUG) << "Checked " << i << " chunks" << endl;
last_update_time = now;
}
if (!fptr.eof())
{
// read the chunk
Uint32 size = i == num_chunks - 1 && tor.getFileLength() % tor.getChunkSize() > 0 ?
tor.getFileLength() % tor.getChunkSize() : (Uint32)tor.getChunkSize();
fptr.seek(File::BEGIN,(Int64)i*tor.getChunkSize());
fptr.read(buf,size);
// generate and test hash
SHA1Hash h = SHA1Hash::generate(buf,size);
bool ok = (h == tor.getHash(i));
downloaded.set(i,ok);
failed.set(i,!ok);
}
else
{
// at end of file so set to default values for a failed chunk
downloaded.set(i,false);
failed.set(i,true);
}
if (listener)
listener->status(failed.numOnBits(),downloaded.numOnBits());
}
}
