Work on issue #4

include/QSimpleUpdater.h

@@ -68,11 +68,13 @@ class QSU_DECL QSimpleUpdater : public QObject {
 
   signals:
     void checkingFinished (const QString& url);
+    void appcastDownloaded (const QString& url, const QByteArray& data);
     void downloadFinished (const QString& url, const QString& filepath);
 
   public:
     static QSimpleUpdater* getInstance();
 
+    bool usesCustomAppcast (const QString& url) const;
     bool getNotifyOnUpdate (const QString& url) const;
     bool getNotifyOnFinish (const QString& url) const;
     bool getUpdateAvailable (const QString& url) const;
@@ -90,12 +92,13 @@ class QSU_DECL QSimpleUpdater : public QObject {
   public slots:
     void checkForUpdates (const QString& url);
     void setModuleName (const QString& url, const QString& name);
-    void setNotifyOnUpdate (const QString& url, const bool& notify);
+    void setNotifyOnUpdate (const QString& url, const bool notify);
-    void setNotifyOnFinish (const QString& url, const bool& notify);
+    void setNotifyOnFinish (const QString& url, const bool notify);
     void setPlatformKey (const QString& url, const QString& platform);
     void setModuleVersion (const QString& url, const QString& version);
-    void setDownloaderEnabled (const QString& url, const bool& enabled);
+    void setDownloaderEnabled (const QString& url, const bool enabled);
-    void setUseCustomInstallProcedures (const QString& url, const bool& custom);
+    void setUseCustomAppcast (const QString& url, const bool customAppcast);
+    void setUseCustomInstallProcedures (const QString& url, const bool custom);
 
   protected:
     ~QSimpleUpdater();

src/Downloader.cpp

@@ -201,7 +201,8 @@ void Downloader::onDownloadFinished() {
         QString name = m_reply->url().toString().split ("/").last();
 
         /* Check if we need to redirect */
-        QUrl url = m_reply->attribute (QNetworkRequest::RedirectionTargetAttribute).toUrl();
+        QUrl url = m_reply->attribute (
+                       QNetworkRequest::RedirectionTargetAttribute).toUrl();
         if (!url.isEmpty()) {
             startDownload (url);
             return;
@@ -326,6 +327,6 @@ qreal Downloader::round (const qreal& input) {
  * Use the signals fired by the \c QSimpleUpdater to implement your own install
  * procedures.
  */
-void Downloader::setUseCustomInstallProcedures (const bool& custom) {
+void Downloader::setUseCustomInstallProcedures (const bool custom) {
     m_useCustomProcedures = custom;
 }

src/Downloader.h

@@ -57,7 +57,7 @@ class Downloader : public QWidget {
 
   public slots:
     void startDownload (const QUrl& url);
-    void setUseCustomInstallProcedures (const bool& custom);
+    void setUseCustomInstallProcedures (const bool custom);
 
   private slots:
     void openDownload();

src/QSimpleUpdater.cpp

@@ -35,6 +35,10 @@ static QList<Updater*> UPDATERS;
 
 QSimpleUpdater::~QSimpleUpdater() {
     URLS.clear();
+
+    foreach (Updater* updater, UPDATERS)
+        updater->deleteLater();
+
     UPDATERS.clear();
 }
 
@@ -46,6 +50,18 @@ QSimpleUpdater* QSimpleUpdater::getInstance() {
     return &updater;
 }
 
+/**
+ * Returns \c true if the \c Updater instance registered with the given \a url
+ * uses a custom appcast format and/or allows the application to read and
+ * interpret the downloaded appcast file
+ *
+ * \note If an \c Updater instance registered with the given \a url is not
+ *       found, that \c Updater instance will be initialized automatically
+ */
+bool QSimpleUpdater::usesCustomAppcast (const QString& url) const {
+    return getUpdater (url)->customAppcast();
+}
+
 /**
  * Returns \c true if the \c Updater instance registered with the given \a url
  * shall notify the user when an update is available.
@@ -230,7 +246,7 @@ void QSimpleUpdater::setModuleName (const QString& url, const QString& name) {
  *       found, that \c Updater instance will be initialized automatically
  */
 void QSimpleUpdater::setNotifyOnUpdate (const QString& url,
-                                        const bool& notify) {
+                                        const bool notify) {
     getUpdater (url)->setNotifyOnUpdate (notify);
 }
 
@@ -243,7 +259,7 @@ void QSimpleUpdater::setNotifyOnUpdate (const QString& url,
  *       found, that \c Updater instance will be initialized automatically
  */
 void QSimpleUpdater::setNotifyOnFinish (const QString& url,
-                                        const bool& notify) {
+                                        const bool notify) {
     getUpdater (url)->setNotifyOnFinish (notify);
 }
 
@@ -288,10 +304,15 @@ void QSimpleUpdater::setModuleVersion (const QString& url,
  *       found, that \c Updater instance will be initialized automatically
  */
 void QSimpleUpdater::setDownloaderEnabled (const QString& url,
-                                           const bool& enabled) {
+        const bool enabled) {
     getUpdater (url)->setDownloaderEnabled (enabled);
 }
 
+void QSimpleUpdater::setUseCustomAppcast (const QString& url,
+        const bool customAppcast) {
+    getUpdater (url)->setUseCustomAppcast (customAppcast);
+}
+
 /**
  * If the \a custom parameter is set to \c true, the \c Updater instance
  * registered with the given \a url will not try to open the downloaded file.
@@ -304,7 +325,7 @@ void QSimpleUpdater::setDownloaderEnabled (const QString& url,
  *       found, that \c Updater instance will be initialized automatically
  */
 void QSimpleUpdater::setUseCustomInstallProcedures (const QString& url,
-        const bool& custom) {
+        const bool custom) {
     getUpdater (url)->setUseCustomInstallProcedures (custom);
 }
 
@@ -326,6 +347,8 @@ Updater* QSimpleUpdater::getUpdater (const QString& url) const {
                  this,    SIGNAL (checkingFinished  (QString)));
         connect (updater, SIGNAL (downloadFinished  (QString, QString)),
                  this,    SIGNAL (downloadFinished  (QString, QString)));
+        connect (updater, SIGNAL (appcastDownloaded (QString, QByteArray)),
+                 this,    SIGNAL (appcastDownloaded (QString, QByteArray)));
     }
 
     return UPDATERS.at (URLS.indexOf (url));

src/Updater.cpp

@@ -43,6 +43,7 @@ Updater::Updater() {
     m_changelog = "";
     m_downloadUrl = "";
     m_latestVersion = "";
+    m_customAppcast = false;
     m_notifyOnUpdate = true;
     m_notifyOnFinish = false;
     m_updateAvailable = false;
@@ -144,6 +145,15 @@ QString Updater::moduleVersion() const {
     return m_moduleVersion;
 }
 
+/**
+ * Returns \c true if the updater should NOT interpret the downloaded appcast.
+ * This is useful if you need to store more variables (or information) in the
+ * JSON file or use another appcast format (e.g. XML)
+ */
+bool Updater::customAppcast() const {
+    return m_customAppcast;
+}
+
 /**
  * Returns \c true if the updater should notify the user when an update is
  * available.
@@ -218,7 +228,7 @@ void Updater::setModuleName (const QString& name) {
  * If \a notify is set to \c true, then the \c Updater will notify the user
  * when an update is available.
  */
-void Updater::setNotifyOnUpdate (const bool& notify) {
+void Updater::setNotifyOnUpdate (const bool notify) {
     m_notifyOnUpdate = notify;
 }
 
@@ -226,7 +236,7 @@ void Updater::setNotifyOnUpdate (const bool& notify) {
  * If \a notify is set to \c true, then the \c Updater will notify the user
  * when it has finished interpreting the update definitions file.
  */
-void Updater::setNotifyOnFinish (const bool& notify) {
+void Updater::setNotifyOnFinish (const bool notify) {
     m_notifyOnFinish = notify;
 }
 
@@ -244,7 +254,7 @@ void Updater::setModuleVersion (const QString& version) {
  * If the \a enabled parameter is set to \c true, the \c Updater will open the
  * integrated downloader if the user agrees to install the update (if any)
  */
-void Updater::setDownloaderEnabled (const bool& enabled) {
+void Updater::setDownloaderEnabled (const bool enabled) {
     m_downloaderEnabled = enabled;
 }
 
@@ -261,12 +271,22 @@ void Updater::setPlatformKey (const QString& platformKey) {
     m_platform = platformKey;
 }
 
+/**
+ * If the \a customAppcast parameter is set to \c true, then the \c Updater
+ * will not try to read the network reply from the server, instead, it will
+ * emit the \c appcastDownloaded() signal, which allows the application to
+ * read and interpret the appcast file by itself
+ */
+void Updater::setUseCustomAppcast (const bool customAppcast) {
+    m_customAppcast = customAppcast;
+}
+
 /**
  * If the \a custom parameter is set to \c true, the \c Updater will not try
  * to open the downloaded file. Use the signals fired by the \c QSimpleUpdater
  * to install the update from the downloaded file by yourself.
  */
-void Updater::setUseCustomInstallProcedures (const bool& custom) {
+void Updater::setUseCustomInstallProcedures (const bool custom) {
     m_downloader->setUseCustomInstallProcedures (custom);
 }
 
@@ -274,23 +294,44 @@ void Updater::setUseCustomInstallProcedures (const bool& custom) {
  * Called when the download of the update definitions file is finished.
  */
 void Updater::onReply (QNetworkReply* reply) {
-    if (reply->error() == QNetworkReply::NoError) {
+    /* Check if we need to redirect */
+    QUrl redirect = reply->attribute (
+                        QNetworkRequest::RedirectionTargetAttribute).toUrl();
+    if (!redirect.isEmpty()) {
+        setUrl (redirect.toString());
+        checkForUpdates();
+        return;
+    }
+
+    /* There was a network error */
+    if (reply->error() != QNetworkReply::NoError)
+        return;
+
+    /* The application wants to interpret the appcast by itself */
+    if (customAppcast()) {
+        emit appcastDownloaded (url(), reply->readAll());
+        return;
+    }
+
+    /* Try to create a JSON document from downloaded data */
     QJsonDocument document = QJsonDocument::fromJson (reply->readAll());
 
+    /* JSON is invalid */
     if (document.isNull())
         return;
 
+    /* Get the platform information */
     QJsonObject updates = document.object().value ("updates").toObject();
     QJsonObject platform = updates.value (platformKey()).toObject();
 
+    /* Get update information */
     m_openUrl = platform.value ("open-url").toString();
     m_changelog = platform.value ("changelog").toString();
     m_downloadUrl = platform.value ("download-url").toString();
     m_latestVersion = platform.value ("latest-version").toString();
 
+    /* Compare latest and current version */
     setUpdateAvailable (compare (latestVersion(), moduleVersion()));
-    }
-
     emit checkingFinished (url());
 }
 
@@ -298,7 +339,7 @@ void Updater::onReply (QNetworkReply* reply) {
  * Prompts the user based on the value of the \a available parameter and the
  * settings of this instance of the \c Updater class.
  */
-void Updater::setUpdateAvailable (const bool& available) {
+void Updater::setUpdateAvailable (const bool available) {
     m_updateAvailable = available;
 
     QMessageBox box;

src/Updater.h

@@ -48,6 +48,7 @@ class QSU_DECL Updater : public QObject {
   signals:
     void checkingFinished (const QString& url);
     void downloadFinished (const QString& url, const QString& filepath);
+    void appcastDownloaded (const QString& url, const QByteArray& data);
 
   public:
     Updater();
@@ -62,6 +63,7 @@ class QSU_DECL Updater : public QObject {
     QString moduleVersion() const;
     QString latestVersion() const;
 
+    bool customAppcast() const;
     bool notifyOnUpdate() const;
     bool notifyOnFinish() const;
     bool updateAvailable() const;
@@ -72,16 +74,17 @@ class QSU_DECL Updater : public QObject {
     void checkForUpdates();
     void setUrl (const QString& url);
     void setModuleName (const QString& name);
-    void setNotifyOnUpdate (const bool& notify);
+    void setNotifyOnUpdate (const bool notify);
-    void setNotifyOnFinish (const bool& notify);
+    void setNotifyOnFinish (const bool notify);
     void setModuleVersion (const QString& version);
-    void setDownloaderEnabled (const bool& enabled);
+    void setDownloaderEnabled (const bool enabled);
     void setPlatformKey (const QString& platformKey);
-    void setUseCustomInstallProcedures (const bool& custom);
+    void setUseCustomAppcast (const bool customAppcast);
+    void setUseCustomInstallProcedures (const bool custom);
 
   private slots:
     void onReply (QNetworkReply* reply);
-    void setUpdateAvailable (const bool& available);
+    void setUpdateAvailable (const bool available);
 
   private:
     bool compare (const QString& x, const QString& y);
@@ -89,6 +92,7 @@ class QSU_DECL Updater : public QObject {
   private:
     QString m_url;
 
+    bool m_customAppcast;
     bool m_notifyOnUpdate;
     bool m_notifyOnFinish;
     bool m_updateAvailable;

tutorial/src/Window.cpp

@@ -35,6 +35,8 @@ Window::Window (QWidget* parent) : QMainWindow (parent) {
     /* Check for updates when the "Check For Updates" button is clicked */
     connect (m_updater, SIGNAL (checkingFinished  (QString)),
              this,        SLOT (updateChangelog   (QString)));
+    connect (m_updater, SIGNAL (appcastDownloaded (QString, QByteArray)),
+             this,        SLOT (displayAppcast    (QString, QByteArray)));
 
     /* React to button clicks */
     connect (m_ui->resetButton, SIGNAL (clicked()),
@@ -45,7 +47,8 @@ Window::Window (QWidget* parent) : QMainWindow (parent) {
              this,                SLOT (checkForUpdates()));
 
     /* Resize the dialog to fit */
-    setFixedSize (minimumSizeHint());
+    setMinimumSize (minimumSizeHint());
+    resize (minimumSizeHint());
 
     /* Reset the UI state */
     resetFields();
@@ -65,6 +68,7 @@ Window::~Window() {
 
 void Window::resetFields() {
     m_ui->installedVersion->setText ("0.1");
+    m_ui->customAppcast->setChecked (false);
     m_ui->enableDownloader->setChecked (true);
     m_ui->showAllNotifcations->setChecked (false);
     m_ui->showUpdateNotifications->setChecked (true);
@@ -77,6 +81,7 @@ void Window::resetFields() {
 void Window::checkForUpdates() {
     /* Get settings from the UI */
     QString version = m_ui->installedVersion->text();
+    bool customAppcast = m_ui->customAppcast->isChecked();
     bool downloaderEnabled = m_ui->enableDownloader->isChecked();
     bool notifyOnFinish = m_ui->showAllNotifcations->isChecked();
     bool notifyOnUpdate = m_ui->showUpdateNotifications->isChecked();
@@ -85,6 +90,7 @@ void Window::checkForUpdates() {
     m_updater->setModuleVersion (DEFS_URL, version);
     m_updater->setNotifyOnFinish (DEFS_URL, notifyOnFinish);
     m_updater->setNotifyOnUpdate (DEFS_URL, notifyOnUpdate);
+    m_updater->setUseCustomAppcast (DEFS_URL, customAppcast);
     m_updater->setDownloaderEnabled (DEFS_URL, downloaderEnabled);
 
     /* Check for updates */
@@ -95,7 +101,26 @@ void Window::checkForUpdates() {
 // Window::updateChangelog
 //==============================================================================
 
-void Window::updateChangelog (QString url) {
+void Window::updateChangelog (const QString& url) {
     if (url == DEFS_URL)
         m_ui->changelogText->setText (m_updater->getChangelog (url));
 }
+
+
+//==============================================================================
+// Window::displayAppcast
+//==============================================================================
+
+void Window::displayAppcast (const QString& url, const QByteArray& reply) {
+    if (url == DEFS_URL) {
+        QString text = "This is the downloaded appcast: <p><pre>" +
+                       QString::fromUtf8 (reply) +
+                       "</pre></p><p> If you need to store more information on the "
+                       "appcast (or use another format), just use the "
+                       "<b>QSimpleUpdater::setCustomAppcast()</b> function. "
+                       "It allows your application to interpret the appcast "
+                       "using your code and not QSU's code.</p>";
+
+        m_ui->changelogText->setText (text);
+    }
+}

tutorial/src/Window.h

@@ -28,7 +28,8 @@ class Window : public QMainWindow {
   public slots:
     void resetFields();
     void checkForUpdates();
-    void updateChangelog (QString url);
+    void updateChangelog (const QString& url);
+    void displayAppcast (const QString& url, const QByteArray& reply);
 
   private:
     Ui::Window* m_ui;

tutorial/src/Window.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>496</width>
+    <width>483</width>
-    <height>487</height>
+    <height>494</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -82,6 +82,23 @@
        <string>Updater Options</string>
       </property>
       <layout class="QGridLayout" name="gridLayout">
+       <item row="3" column="0">
+        <widget class="QCheckBox" name="showAllNotifcations">
+         <property name="text">
+          <string>Show all notifications</string>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="1">
+        <widget class="QLineEdit" name="installedVersion">
+         <property name="text">
+          <string>0.1</string>
+         </property>
+         <property name="placeholderText">
+          <string>Write a version string...</string>
+         </property>
+        </widget>
+       </item>
        <item row="5" column="0">
         <widget class="QCheckBox" name="enableDownloader">
          <property name="text">
@@ -102,13 +119,6 @@
          </property>
         </widget>
        </item>
-       <item row="3" column="0">
-        <widget class="QCheckBox" name="showAllNotifcations">
-         <property name="text">
-          <string>Show all notifications</string>
-         </property>
-        </widget>
-       </item>
        <item row="2" column="0">
         <widget class="QLabel" name="label">
          <property name="text">
@@ -116,13 +126,10 @@
          </property>
         </widget>
        </item>
-       <item row="2" column="1">
+       <item row="6" column="0">
-        <widget class="QLineEdit" name="installedVersion">
+        <widget class="QCheckBox" name="customAppcast">
          <property name="text">
-          <string>0.1</string>
+          <string>Do not use the QSU library to read the appcast</string>
-         </property>
-         <property name="placeholderText">
-          <string>Write a version string...</string>
          </property>
         </widget>
        </item>
@@ -144,27 +151,14 @@
           <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
-&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'.Lucida Grande UI'; font-size:13pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'.SF NS Text'; font-size:13pt; font-weight:400; font-style:normal;&quot;&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Click &amp;quot;Check for Updates&amp;quot; to update this field...&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'.Lucida Grande UI';&quot;&gt;Click &amp;quot;Check for Updates&amp;quot; to update this field...&lt;/span&gt;&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
          </property>
         </widget>
        </item>
       </layout>
      </widget>
     </item>
-    <item>
-     <spacer name="verticalSpacer">
-      <property name="orientation">
-       <enum>Qt::Vertical</enum>
-      </property>
-      <property name="sizeHint" stdset="0">
-       <size>
-        <width>20</width>
-        <height>40</height>
-       </size>
-      </property>
-     </spacer>
-    </item>
     <item>
      <widget class="QFrame" name="frame">
       <property name="frameShape">