Implement episode filter for rss downloader

src/rss/automatedrssdownloader.cpp

@@ -68,6 +68,11 @@ AutomatedRssDownloader::AutomatedRssDownloader(const QWeakPointer<RssManager>& m
   Q_ASSERT(ok);
   m_ruleList = manager.toStrongRef()->downloadRules();
   m_editableRuleList = new RssDownloadRuleList; // Read rule list from disk
+  m_episodeValidator = new QRegExpValidator(
+                         QRegExp("^(^[1-9]{1,1}\\d{0,3}x([1-9]{1,1}\\d{0,3}(-([1-9]{1,1}\\d{0,3})?)?;){1,}){1,1}",
+                                 Qt::CaseInsensitive),
+                         ui->lineEFilter);
+  ui->lineEFilter->setValidator(m_episodeValidator);
   initLabelCombobox();
   loadFeedList();
   loadSettings();
@@ -94,6 +99,8 @@ AutomatedRssDownloader::AutomatedRssDownloader(const QWeakPointer<RssManager>& m
   Q_ASSERT(ok);
   ok = connect(this, SIGNAL(finished(int)), SLOT(on_finished(int)));
   Q_ASSERT(ok);
+  ok = connect(ui->lineEFilter, SIGNAL(textEdited(QString)), SLOT(updateMatchingArticles()));
+  Q_ASSERT(ok);
   editHotkey = new QShortcut(QKeySequence("F2"), ui->listRules, 0, 0, Qt::WidgetShortcut);
   ok = connect(editHotkey, SIGNAL(activated()), SLOT(renameSelectedRule()));
   Q_ASSERT(ok);
@@ -113,6 +120,7 @@ AutomatedRssDownloader::~AutomatedRssDownloader()
   delete deleteHotkey;
   delete ui;
   delete m_editableRuleList;
+  delete m_episodeValidator;
 }
 
 void AutomatedRssDownloader::loadSettings()
@@ -223,6 +231,11 @@ void AutomatedRssDownloader::updateRuleDefinitionBox()
     if (rule) {
       ui->lineContains->setText(rule->mustContain());
       ui->lineNotContains->setText(rule->mustNotContain());
+      QString ep = rule->episodeFilter();
+      if (!ep.isEmpty())
+        ui->lineEFilter->setText(ep);
+      else
+        ui->lineEFilter->clear();
       ui->saveDiffDir_check->setChecked(!rule->savePath().isEmpty());
       ui->lineSavePath->setText(fsutils::toNativePath(rule->savePath()));
       ui->checkRegex->setChecked(rule->useRegex());
@@ -301,6 +314,7 @@ void AutomatedRssDownloader::saveEditedRule()
   rule->setUseRegex(ui->checkRegex->isChecked());
   rule->setMustContain(ui->lineContains->text());
   rule->setMustNotContain(ui->lineNotContains->text());
+  rule->setEpisodeFilter(ui->lineEFilter->text());
   if (ui->saveDiffDir_check->isChecked())
     rule->setSavePath(ui->lineSavePath->text());
   else

src/rss/automatedrssdownloader.h

@@ -34,6 +34,7 @@
 #include <QDialog>
 #include <QWeakPointer>
 #include <QShortcut>
+#include <QRegExpValidator>
 #include "rssdownloadrule.h"
 
 QT_BEGIN_NAMESPACE
@@ -94,6 +95,7 @@ private:
   QListWidgetItem* m_editedRule;
   RssDownloadRuleList *m_ruleList;
   RssDownloadRuleList *m_editableRuleList;
+  QRegExpValidator *m_episodeValidator;
   QShortcut *editHotkey;
   QShortcut *deleteHotkey;
 };

src/rss/automatedrssdownloader.ui

@@ -216,6 +216,45 @@
               </item>
              </layout>
             </item>
+            <item row="2" column="1">
+             <layout class="QHBoxLayout" name="horizontalLayout_6">
+              <item>
+               <widget class="QLineEdit" name="lineEFilter"/>
+              </item>
+              <item>
+               <widget class="QLabel" name="lblEFilterStat">
+                <property name="sizePolicy">
+                 <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+                  <horstretch>0</horstretch>
+                  <verstretch>0</verstretch>
+                 </sizepolicy>
+                </property>
+                <property name="minimumSize">
+                 <size>
+                  <width>18</width>
+                  <height>18</height>
+                 </size>
+                </property>
+                <property name="maximumSize">
+                 <size>
+                  <width>18</width>
+                  <height>18</height>
+                 </size>
+                </property>
+                <property name="text">
+                 <string notr="true"/>
+                </property>
+               </widget>
+              </item>
+             </layout>
+            </item>
+            <item row="2" column="0">
+             <widget class="QLabel" name="lblEFilter">
+              <property name="text">
+               <string>Episode filter:</string>
+              </property>
+             </widget>
+            </item>
            </layout>
           </item>
           <item>

src/rss/rssdownloadrule.cpp

@@ -60,6 +60,63 @@ bool RssDownloadRule::matches(const QString &article_title) const
         return false;
     }
   }
+  if (!m_episodeFilter.isEmpty()) {
+    qDebug("Checking episode filter");
+    QRegExp f("(^\\d{1,4})x(.*;$)");
+    int pos = f.indexIn(m_episodeFilter);
+    if (pos < 0)
+      return false;
+
+    QString s = f.cap(1);
+    QStringList eps = f.cap(2).split(";");
+    QString expStr;
+    expStr += "s0?" + s + "[ -_\.]?" + "e0?";
+
+    foreach (const QString& ep, eps) {
+      if (ep.isEmpty())
+        continue;
+
+      if (ep.indexOf('-') != -1) { // Range detected
+        QString partialPattern = "s0?" + s + "[ -_\.]?" + "e(0?\\d{1,4})";
+        QRegExp reg(partialPattern, Qt::CaseInsensitive);
+
+        if (ep.endsWith('-')) { // Infinite range
+          int epOurs = ep.left(ep.size() - 1).toInt();
+
+          // Extract partial match from article and ocmpare as digits
+          pos = reg.indexIn(article_title);
+          if (pos != -1) {
+            int epTheirs = reg.cap(1).toInt();
+            if (epTheirs >= epOurs)
+              return true;
+          }
+        }
+        else { // Normal range
+          QStringList range = ep.split('-');
+          Q_ASSERT(range.size() == 2);
+          if (range.first().toInt() > range.last().toInt())
+            continue; // Ignore this subrule completely
+
+          int epOursFirst = range.first().toInt();
+          int epOursLast = range.last().toInt();
+
+          // Extract partial match from article and ocmpare as digits
+          pos = reg.indexIn(article_title);
+          if (pos != -1) {
+            int epTheirs = reg.cap(1).toInt();
+            if (epOursFirst <= epTheirs && epOursLast >= epTheirs)
+              return true;
+          }
+        }
+      }
+      else { // Single number
+        QRegExp reg(expStr + ep + "\\D", Qt::CaseInsensitive);
+        if (reg.indexIn(article_title) != -1)
+          return true;
+      }
+    }
+    return false;
+  }
   return true;
 }
 
@@ -86,6 +143,7 @@ RssDownloadRulePtr RssDownloadRule::fromVariantHash(const QVariantHash &rule_has
   rule->setUseRegex(rule_hash.value("use_regex", false).toBool());
   rule->setMustContain(rule_hash.value("must_contain").toString());
   rule->setMustNotContain(rule_hash.value("must_not_contain").toString());
+  rule->setEpisodeFilter(rule_hash.value("episode_filter").toString());
   rule->setRssFeeds(rule_hash.value("affected_feeds").toStringList());
   rule->setEnabled(rule_hash.value("enabled", false).toBool());
   rule->setSavePath(rule_hash.value("save_path").toString());
@@ -104,6 +162,7 @@ QVariantHash RssDownloadRule::toVariantHash() const
   hash["enabled"] = m_enabled;
   hash["label_assigned"] = m_label;
   hash["use_regex"] = m_useRegex;
+  hash["episode_filter"] = m_episodeFilter;
   return hash;
 }
 

src/rss/rssdownloadrule.h

@@ -65,6 +65,8 @@ public:
   inline QString mustNotContain() const { return m_mustNotContain.join(" "); }
   inline bool useRegex() const { return m_useRegex; }
   inline void setUseRegex(bool enabled) { m_useRegex = enabled; }
+  inline QString episodeFilter() const { return m_episodeFilter; }
+  inline void setEpisodeFilter(const QString& e) { m_episodeFilter = e; }
   QStringList findMatchingArticles(const RssFeedPtr& feed) const;
   // Operators
   bool operator==(const RssDownloadRule &other) const;
@@ -73,6 +75,7 @@ private:
   QString m_name;
   QStringList m_mustContain;
   QStringList m_mustNotContain;
+  QString m_episodeFilter;
   QString m_savePath;
   QString m_label;
   bool m_enabled;