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Fixed infinite download loop on broken tile images

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Added support for HTTP redirects
This commit is contained in:
Martin Tůma 2016-06-16 20:32:11 +02:00
parent 40803d68c1
commit 31f6eeac26
3 changed files with 17 additions and 7 deletions
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7
src/downloader.cpp
View File

@ -64,8 +64,15 @@ void Downloader::downloadFinished(QNetworkReply *reply)
fprintf(stderr, "Error downloading map tile: %s: %s\n", fprintf(stderr, "Error downloading map tile: %s: %s\n",
url.toEncoded().constData(), qPrintable(reply->errorString())); url.toEncoded().constData(), qPrintable(reply->errorString()));
} else { } else {
QUrl redirect = reply->attribute(
QNetworkRequest::RedirectionTargetAttribute).toUrl();
QString filename = reply->request().attribute(QNetworkRequest::User) QString filename = reply->request().attribute(QNetworkRequest::User)
.toString(); .toString();
if (!redirect.isEmpty()) {
Download dl(redirect, filename);
doDownload(dl);
} else
saveToDisk(filename, reply); saveToDisk(filename, reply);
} }

6
src/downloader.h
View File

@ -12,13 +12,13 @@
class Download class Download
{ {
public: public:
Download(const QString &url, const QString &file) Download(const QUrl &url, const QString &file)
{_url = url; _file = file;} {_url = url; _file = file;}
const QString& url() const {return _url;} const QUrl& url() const {return _url;}
const QString& file() const {return _file;} const QString& file() const {return _file;}
private: private:
QString _url; QUrl _url;
QString _file; QString _file;
}; };

9
src/map.cpp
View File

@ -42,10 +42,11 @@ void Map::loadTilesAsync(QList<Tile> &list)
QString file = tileFile(t); QString file = tileFile(t);
QFileInfo fi(file); QFileInfo fi(file);
if (!(fi.exists() && loadTileFile(t, file))) { if (!fi.exists()) {
fillTile(t); fillTile(t);
dl.append(Download(tileUrl(t), file)); dl.append(Download(tileUrl(t), file));
} } else
loadTileFile(t, file);
} }
if (!dl.empty()) if (!dl.empty())
@ -61,8 +62,10 @@ void Map::loadTilesSync(QList<Tile> &list)
QString file = tileFile(t); QString file = tileFile(t);
QFileInfo fi(file); QFileInfo fi(file);
if (!(fi.exists() && loadTileFile(t, file))) if (!fi.exists())
dl.append(Download(tileUrl(t), file)); dl.append(Download(tileUrl(t), file));
else
loadTileFile(t, file);
} }
if (dl.empty()) if (dl.empty())