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tdemultimedia/noatun/library/downloader.cpp

237 lines
4.4 KiB

#include <noatun/downloader.h>
#include <noatun/app.h>
#include <assert.h>
#include <tqfile.h>
#include <tqtimer.h>
#include <tdeio/job.h>
#include <klocale.h>
DownloadItem::DownloadItem()
{
}
DownloadItem::~DownloadItem()
{
dequeue();
}
bool DownloadItem::isDownloaded() const
{
return true;
}
TQString DownloadItem::localFilename() const
{
return mLocalFilename;
}
void DownloadItem::setLocalFilename(const TQString &filename)
{
mLocalFilename=filename;
}
void DownloadItem::downloadFinished()
{
}
void DownloadItem::downloaded(int )
{
}
void DownloadItem::downloadTimeout()
{
}
bool DownloadItem::enqueue(const KURL &url)
{
if (url.isLocalFile())
{
setLocalFilename(url.path());
return false;
}
else
{
napp->downloader()->enqueue(this, url);
return true;
}
}
void DownloadItem::dequeue()
{
napp->downloader()->dequeue(this);
}
Downloader::Downloader(TQObject *parent)
: TQObject(parent), localfile(0), current(0), mJob(0), mTimeout(0)
{
mStarted=false;
mUnstartedQueue=new TQPtrList<Downloader::QueueItem>;
}
Downloader::~Downloader()
{
}
void Downloader::start()
{
assert(!mStarted);
mStarted=true;
if (current)
emit enqueued(current->notifier, current->file);
for (TQPtrListIterator<Downloader::QueueItem> i(*mUnstartedQueue); i.current(); ++i)
{
(*i)->notifier->mLocalFilename = (*i)->local;
mQueue.append(*i);
emit enqueued((*i)->notifier, (*i)->file);
}
delete mUnstartedQueue;
mUnstartedQueue=0;
TQTimer::singleShot(0, this, TQT_SLOT(getNext()));
}
static TQString nonExistantFile(const TQString &file)
{
if (file.right(1)=="/") return i18n("Unknown");
int i=0;
TQString f(file);
while (TQFile(f).exists())
{
i++;
f=file;
f.insert(f.findRev('.'), '_'+TQString::number(i));
}
return f;
}
TQString Downloader::enqueue(DownloadItem *notifier, const KURL &file)
{
if (file.isLocalFile()) return 0;
QueueItem *i=new QueueItem;
i->notifier=notifier;
i->file=file;
if (!mStarted)
{
i->local=notifier->mLocalFilename;
if (!notifier->localFilename().length())
{
i->local =
nonExistantFile(napp->saveDirectory()+'/'+file.fileName());
}
mUnstartedQueue->append(i);
return i->local;
}
if (!notifier->localFilename().length())
{
notifier->mLocalFilename=
i->local =
nonExistantFile(napp->saveDirectory()+'/'+file.fileName());
}
else
{
i->local = notifier->mLocalFilename;
}
mQueue.append(i);
TQTimer::singleShot(0, this, TQT_SLOT(getNext()));
emit enqueued(notifier, file);
return i->local;
}
void Downloader::dequeue(DownloadItem *notifier)
{
if (current && notifier==current->notifier)
{
mJob->kill();
jobDone(mJob);
return;
}
for (TQPtrListIterator<Downloader::QueueItem> i(mQueue); i.current(); ++i)
{
if ((*i)->notifier==notifier)
{
mQueue.removeRef(*i);
if (mStarted)
emit dequeued(notifier);
delete *i;
return;
}
}
}
void Downloader::getNext()
{
if (current) return;
if (!mStarted) return;
if (mQueue.isEmpty()) return;
current=mQueue.take(0);
// open the TQFile
localfile=new TQFile(current->local);
localfile->open(IO_ReadWrite | IO_Append);
mJob= TDEIO::get(current->file, true, false);
connect(mJob, TQT_SIGNAL(data(TDEIO::Job*, const TQByteArray&)), TQT_SLOT(data(TDEIO::Job*, const TQByteArray&)));
connect(mJob, TQT_SIGNAL(result(TDEIO::Job*)), TQT_SLOT(jobDone(TDEIO::Job*)));
connect(mJob, TQT_SIGNAL(percent(TDEIO::Job*, unsigned long)), TQT_SLOT(percent(TDEIO::Job*, unsigned long)));
if (mTimeout)
delete mTimeout;
mTimeout=new TQTimer(this);
mTimeout->start(30000, true);
connect(mTimeout, TQT_SIGNAL(timeout()), TQT_SLOT(giveUpWithThisDownloadServerIsRunningNT()));
}
void Downloader::data(TDEIO::Job *, const TQByteArray &data)
{
localfile->writeBlock(data);
localfile->flush();
delete mTimeout;
mTimeout=0;
}
void Downloader::jobDone(TDEIO::Job *)
{
delete mTimeout;
mTimeout=0;
current->notifier->downloadFinished();
if (mStarted)
emit dequeued(current->notifier);
delete current;
current=0;
mJob=0;
getNext();
}
void Downloader::giveUpWithThisDownloadServerIsRunningNT()
{
delete mTimeout;
mTimeout=0;
if (!current) return;
DownloadItem *old=current->notifier;
if (!old) return;
old->downloadTimeout();
current=0;
mJob=0;
delete old;
getNext();
}
void Downloader::percent( TDEIO::Job *, unsigned long percent)
{
if (current && current->notifier)
current->notifier->downloaded((int)percent);
}
#include "downloader.moc"