X-Git-Url: http://git.code-monkey.de/?a=blobdiff_plain;f=pv%2Fdevicemanager.cpp;h=13b44e969cc2720e0d17f86c9ab4871030221f06;hb=6842b5fc481eb43d9aeea81f17e211820d6dc405;hp=bbcfbf247675b345ab5af39376a930af132ca2e8;hpb=858ae630aec11f2f1300897cc3ca127a4537e598;p=pulseview.git

diff --git a/pv/devicemanager.cpp b/pv/devicemanager.cpp
index bbcfbf2..13b44e9 100644
--- a/pv/devicemanager.cpp
+++ b/pv/devicemanager.cpp
@@ -30,7 +30,6 @@
 
 using std::list;
 using std::map;
-using std::ostringstream;
 using std::runtime_error;
 using std::shared_ptr;
 using std::string;
@@ -90,6 +89,57 @@ list< shared_ptr<device::Device> > DeviceManager::driver_scan(
 	return driver_devices;
 }
 
+const shared_ptr<device::Device> DeviceManager::find_device_from_info(
+	const map<string, string> search_info)
+{
+	shared_ptr<device::Device> last_resort_dev;
+	map<string, string> dev_info;
+
+	last_resort_dev = NULL;
+
+	for (shared_ptr<device::Device> dev : _devices) {
+		assert(dev);
+		dev_info = dev->get_device_info();
+
+		// If present, vendor and model always have to match.
+		if (dev_info.count("vendor") > 0 && search_info.count("vendor") > 0)
+			if (dev_info.at("vendor") != search_info.at("vendor")) continue;
+
+		if (dev_info.count("model") > 0 && search_info.count("model") > 0)
+			if (dev_info.at("model") != search_info.at("model")) continue;
+
+		// Most unique match: vendor/model/serial_num (but don't match a S/N of 0)
+		if ((dev_info.count("serial_num") > 0) && (dev_info.at("serial_num") != "0")
+				&& search_info.count("serial_num") > 0)
+			if (dev_info.at("serial_num") == search_info.at("serial_num") &&
+					dev_info.at("serial_num") != "0")
+				return dev;
+
+		// Second best match: vendor/model/connection_id
+		if (dev_info.count("connection_id") > 0 &&
+			search_info.count("connection_id") > 0)
+			if (dev_info.at("connection_id") == search_info.at("connection_id"))
+				return dev;
+
+		// Last resort: vendor/model/version
+		if (dev_info.count("version") > 0 &&
+			search_info.count("version") > 0)
+			if (dev_info.at("version") == search_info.at("version") &&
+					dev_info.at("version") != "0")
+				return dev;
+
+		// For this device, we merely have a vendor/model match.
+		last_resort_dev = dev;
+	}
+
+	// If there wasn't even a vendor/model/version match, we end up here.
+	// This is usually the case for devices with only vendor/model data.
+	// The selected device may be wrong with multiple such devices attached
+	// but it is the best we can do at this point. After all, there may be
+	// only one such device and we do want to select it in this case.
+	return last_resort_dev;
+}
+
 void DeviceManager::init_drivers()
 {
 	// Initialise all libsigrok drivers