Assistant: Mark the readonly collection files

The qhc file may be installed in readonly location.
Don't try to fix tables there, we leave it for the
cached qhc file.

Task-number: QTBUG-72174
Change-Id: I513c799d2b571a9dd9bc77b7c122e635c863fcff
Reviewed-by: Kai Pastor <dg0yt@darc.de>
Reviewed-by: Kai Koehne <kai.koehne@qt.io>

4 files changed, 16 insertions, 0 deletions

diff --git a/src/assistant/assistant/main.cpp b/src/assistant/assistant/main.cpp
index ac20872bd..3f4390450 100644
--- a/src/assistant/assistant/main.cpp
+++ b/src/assistant/assistant/main.cpp
@@ -302,6 +302,7 @@ int main(int argc, char *argv[])
     QScopedPointer<QHelpEngineCore> collection;
     if (collectionFileGiven) {
         collection.reset(new QHelpEngineCore(collectionFile));
+        collection->setProperty("_q_readonly", QVariant::fromValue<bool>(true));
         if (!collection->setupData()) {
             cmd.showMessage(QCoreApplication::translate("Assistant",
                                 "Error reading collection file '%1': %2.").
diff --git a/src/assistant/help/qhelpcollectionhandler.cpp b/src/assistant/help/qhelpcollectionhandler.cpp
index 32ce01bf0..4ca428657 100644
--- a/src/assistant/help/qhelpcollectionhandler.cpp
+++ b/src/assistant/help/qhelpcollectionhandler.cpp
@@ -152,6 +152,9 @@ bool QHelpCollectionHandler::openCollectionFile()
         }
     }
 
+    if (m_readOnly)
+        return true;
+
     m_query->exec(QLatin1String("PRAGMA synchronous=OFF"));
     m_query->exec(QLatin1String("PRAGMA cache_size=3000"));
 
@@ -1770,4 +1773,9 @@ QMap<QString, QUrl> QHelpCollectionHandler::linksForField(const QString &fieldNa
     return linkMap;
 }
 
+void QHelpCollectionHandler::setReadOnly(bool readOnly)
+{
+    m_readOnly = readOnly;
+}
+
 QT_END_NAMESPACE
diff --git a/src/assistant/help/qhelpcollectionhandler_p.h b/src/assistant/help/qhelpcollectionhandler_p.h
index e8cfe3474..a0a8ace7a 100644
--- a/src/assistant/help/qhelpcollectionhandler_p.h
+++ b/src/assistant/help/qhelpcollectionhandler_p.h
@@ -141,6 +141,8 @@ public:
     QMap<QString, QUrl> linksForKeyword(const QString &keyword,
                                         const QStringList &filterAttributes) const;
 
+    void setReadOnly(bool readOnly);
+
 signals:
     void error(const QString &msg) const;
 
@@ -169,6 +171,7 @@ private:
     QString m_connectionName;
     QSqlQuery *m_query = nullptr;
     bool m_vacuumScheduled = false;
+    bool m_readOnly = false;
 };
 
 QT_END_NAMESPACE
diff --git a/src/assistant/help/qhelpenginecore.cpp b/src/assistant/help/qhelpenginecore.cpp
index 238fbfce3..0e8535415 100644
--- a/src/assistant/help/qhelpenginecore.cpp
+++ b/src/assistant/help/qhelpenginecore.cpp
@@ -83,6 +83,10 @@ bool QHelpEngineCorePrivate::setup()
     emit q->setupStarted();
     emitReadersAboutToBeInvalidated();
 
+    const QVariant readOnlyVariant = q->property("_q_readonly");
+    const bool readOnly = readOnlyVariant.isValid()
+            ? readOnlyVariant.toBool() : false;
+    collectionHandler->setReadOnly(readOnly);
     const bool opened = collectionHandler->openCollectionFile();
     if (opened)
         q->currentFilter();