shared: common: Add mountPaths()

Mountpaths indicate mount points of external devices. Files
located under such paths should not be removed on sync, because
they may have not been deleted, but are just inaccessible right now.

shared/common.cpp

@@ -19,6 +19,7 @@
 #define SETTINGS_KEY_IPCSOCKETPATH "ipcsocketpath"
 #define SETTINGS_KEY_PDFVIEWER "pdfviewer"
 #define SETTINGS_KEY_EXCLUDEDPATHS "excludedpaths"
+#define SETTINGS_KEY_MOUNTPATHS "mountpaths"
 
 inline void initResources()
 {
@@ -180,6 +181,32 @@ QStringList Common::excludedPaths()
 	return ::excludedPaths;
 }
 
+QStringList Common::mountPaths()
+{
+	static int ran = false;
+	static QStringList mountPaths;
+	if(!ran)
+	{
+		QSettings settings;
+		mountPaths = settings.value(SETTINGS_KEY_MOUNTPATHS, QStringList{"/media", "/mnt"}).toStringList();
+		ran = true;
+	}
+	return mountPaths;
+}
+
+bool Common::isMountPath(QString path)
+{
+	QStringList mountPaths = Common::mountPaths();
+	for(QString &mountPath : mountPaths)
+	{
+		if(path.startsWith(mountPath))
+		{
+			return true;
+		}
+	}
+	return false;
+}
+
 bool Common::isTextFile(QFileInfo fileInfo)
 {
 	/* TODO: This is not sandboxed yet ... */

shared/common.h

@@ -12,7 +12,9 @@ QString findInPath(QString needle);
 bool initSqliteDatabase(QString path);
 void ensureConfigured();
 QStringList excludedPaths();
+QStringList mountPaths();
 bool isTextFile(QFileInfo fileInfo);
+bool isMountPath(QString path);
 QString versionText();
 } // namespace Common
 #endif