src/downloader.h

   1 #ifndef DOWNLOADER_H
   2 #define DOWNLOADER_H
   3
   4 #include <QNetworkAccessManager>
   5 #include <QUrl>
   6 #include <QList>
   7 #include <QMap>
   8 #include <QSet>
   9
  10
  11 class QNetworkReply;
  12
  13 class Download
  14 {
  15 public:
  16         Download(const QUrl &url, const QString &file)
  17                 {_url = url; _file = file;}
  18         const QUrl& url() const {return _url;}
  19         const QString& file() const {return _file;}
  20
  21 private:
  22         QUrl _url;
  23         QString _file;
  24 };
  25
  26
  27 class Downloader : public QObject
  28 {
  29         Q_OBJECT
  30
  31 public:
  32         Downloader(QObject *parent = 0);
  33
  34         bool get(const QList<Download> &list);
  35
  36 signals:
  37         void finished();
  38
  39 private slots:
  40         void downloadFinished(QNetworkReply *reply);
  41
  42 private:
  43         class Redirect
  44         {
  45         public:
  46                 Redirect() : _level(0) {}
  47                 Redirect(const QUrl &origin, int level) :
  48                   _origin(origin), _level(level) {}
  49
  50                 const QUrl &origin() const {return _origin;}
  51                 int level() const {return _level;}
  52
  53                 bool isNull() const {return (_level == 0);}
  54
  55         private:
  56                 QUrl _origin;
  57                 int _level;
  58         };
  59
  60         bool doDownload(const Download &dl, const Redirect &redirect = Redirect());
  61         bool saveToDisk(const QString &filename, QIODevice *data);
  62
  63         QNetworkAccessManager _manager;
  64         QMap<QUrl, QNetworkReply *> _currentDownloads;
  65         QSet<QUrl> _errorDownloads;
  66 };
  67
  68 #endif // DOWNLOADER_H