/** Callback function from curl: inform about progress. It makes sure that
* the value reported by getProgress () is <1 while the download is still
* in progress.
* \param clientp
* \param download_total Total size of data to download.
* \param download_now How much has been downloaded so far.
* \param upload_total Total amount of upload.
* \param upload_now How muc has been uploaded so far.
*/
int HTTPRequest::progressDownload(void *clientp,
double download_total, double download_now,
double upload_total, double upload_now)
{
HTTPRequest *request = (HTTPRequest *)clientp;
RequestManager* request_manager = RequestManager::get();
// Check if we are asked to abort the download. If so, signal this
// back to libcurl by returning a non-zero status.
if ((request_manager->getAbort() || request->isCancelled()) &&
request->isAbortable() )
{
// Indicates to abort the current download, which means that this
// thread will go back to the mainloop and handle the next request.
return 1;
}
float f;
if (download_now < download_total)
{
f = (float)download_now / (float)download_total;
// In case of floating point rouding errors make sure that
// 1.0 is only reached when downloadFileInternal is finished
if (f >= 1.0f)
f = 0.99f;
}
else
{
// Don't set progress to 1.0f; this is done in afterOperation()
// after checking curls return code!
f = (download_total == 0) ? 0 : 0.99f;
}
request->setProgress(f);
return 0;
} // progressDownload
