+/**
+ * Get the device that was detected with user provided scan options.
+ */
+shared_ptr<devices::HardwareDevice>
+DeviceManager::user_spec_device() const
+{
+ return user_spec_device_;
+}
+
+/**
+ * Convert generic options to data types that are specific to Driver::scan().
+ *
+ * @param[in] user_spec Vector of tokenized words, string format.
+ * @param[in] driver_opts Driver's scan options, result of Driver::scan_options().
+ *
+ * @return Map of options suitable for Driver::scan().
+ */
+map<const ConfigKey *, Glib::VariantBase>
+DeviceManager::drive_scan_options(vector<string> user_spec,
+ set<const ConfigKey *> driver_opts)
+{
+ map<const ConfigKey *, Glib::VariantBase> result;
+
+ for (auto entry : user_spec) {
+ /*
+ * Split key=value specs. Accept entries without separator
+ * (for simplified boolean specifications).
+ */
+ string key, val;
+ size_t pos = entry.find("=");
+ if (pos == std::string::npos) {
+ key = entry;
+ val = "";
+ } else {
+ key = entry.substr(0, pos);
+ val = entry.substr(pos + 1);
+ }
+
+ /*
+ * Skip user specifications that are not a member of the
+ * driver's set of supported options. Have the text format
+ * input spec converted to the required driver specific type.
+ */
+ const ConfigKey *cfg;
+ try {
+ cfg = ConfigKey::get_by_identifier(key);
+ if (!cfg)
+ continue;
+ if (driver_opts.find(cfg) == driver_opts.end())
+ continue;
+ } catch (...) {
+ continue;
+ }
+ result[cfg] = cfg->parse_string(val);
+ }
+
+ return result;
+}
+