better error texts, report errors correctly for standard and tt-rss, more to come later

src/librssguard/services/abstract/feed.cpp

@@ -293,8 +293,11 @@ QString Feed::getStatusDescription() const {
     case Status::NetworkError:
       return tr("network error");
 
+    case Status::ParsingError:
+      return tr("parsing error");
+
     default:
-      return tr("unspecified error");
+      return tr("error");
   }
 }
 
@@ -319,9 +322,15 @@ void Feed::removeMessageFilter(MessageFilter* filter) {
 }
 
 QString Feed::additionalTooltip() const {
+  QString stat = getStatusDescription();
+
+  if (!m_statusString.simplified().isEmpty()) {
+    stat += QSL(" (%1)").arg(m_statusString);
+  }
+
   return tr("Auto-update status: %1\n"
             "Active message filters: %2\n"
             "Status: %3").arg(getAutoUpdateStatusDescription(),
                               QString::number(m_messageFilters.size()),
-                              getStatusDescription());
+                              stat);
 }

src/librssguard/services/standard/feedparser.cpp

@@ -9,7 +9,11 @@
 #include <utility>
 
 FeedParser::FeedParser(QString data) : m_xmlData(std::move(data)), m_mrssNamespace(QSL("http://search.yahoo.com/mrss/")) {
-  m_xml.setContent(m_xmlData, true);
+  QString error;
+
+  if (!m_xml.setContent(m_xmlData, true, &error)) {
+    throw ApplicationException(QObject::tr("XML problem: %1").arg(error));
+  }
 }
 
 FeedParser::~FeedParser() = default;

src/librssguard/services/tt-rss/ttrssserviceroot.cpp

@@ -229,7 +229,7 @@ QList<Message> TtRssServiceRoot::obtainNewMessages(const QList<Feed*>& feeds) {
                                                                     networkProxy());
 
       if (network()->lastError() != QNetworkReply::NetworkError::NoError) {
-        throw FeedFetchException(Feed::Status::NetworkError);
+        throw FeedFetchException(Feed::Status::NetworkError, headlines.error());
       }
       else {
         QList<Message> new_messages = headlines.messages(this);