Use std::unordered_map consistently and support legacy Qt

connector/CMakeLists.txt

@@ -19,6 +19,7 @@ set(HEADER_FILES
     syncthingconfig.h
     syncthingprocess.h
     syncthingservice.h
+    qstringhash.h
     utils.h)
 set(SRC_FILES
     syncthingdir.cpp

connector/qstringhash.h

@@ -0,0 +1,21 @@
+#ifndef SYNCTHING_CONNECTOR_QSTRING_HASH_H
+#define SYNCTHING_CONNECTOR_QSTRING_HASH_H
+
+#include <QString>
+
+#include <functional>
+
+#if (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
+namespace std {
+
+template <> struct hash<QString> {
+    inline std::size_t operator()(const QString &str) const
+    {
+        return qHash(str);
+    }
+};
+
+} // namespace std
+#endif
+
+#endif // SYNCTHING_CONNECTOR_QSTRING_HASH_H

connector/syncthingdev.h

@@ -1,6 +1,7 @@
 #ifndef DATA_SYNCTHINGDEV_H
 #define DATA_SYNCTHINGDEV_H
 
+#include "./qstringhash.h"
 #include "./syncthingcompletion.h"
 
 #include <c++utilities/chrono/datetime.h>

connector/syncthingdir.h

@@ -1,6 +1,7 @@
 #ifndef DATA_SYNCTHINGDIR_H
 #define DATA_SYNCTHINGDIR_H
 
+#include "./qstringhash.h"
 #include "./syncthingcompletion.h"
 
 #include <c++utilities/chrono/datetime.h>
@@ -130,7 +131,7 @@ struct LIB_SYNCTHING_CONNECTOR_EXPORT SyncthingDir {
     int scanningPercentage = 0;
     double scanningRate = 0;
     double fileSystemWatcherDelay = 0.0;
-    std::map<QString, SyncthingCompletion> completionByDevice;
+    std::unordered_map<QString, SyncthingCompletion> completionByDevice;
     QString globalError;
     quint64 pullErrorCount = 0;
     std::vector<SyncthingItemError> itemErrors;