Read events from multiple devices.

internal/config/rules.go

@@ -64,6 +64,7 @@ func makeRuleTarget(targetConfig RuleTargetConfig, devs map[string]*evdev.InputD
 	ruleTarget.Type = eventType
 	ruleTarget.Code = eventCode
 	ruleTarget.Inverted = targetConfig.Inverted
+	ruleTarget.DeviceName = targetConfig.Device
 
 	return ruleTarget, nil
 }
@@ -83,8 +84,7 @@ func decodeRuleTargetValues(target RuleTargetConfig) (evdev.EvType, evdev.EvCode
 		if !ok {
 			return 0, 0, fmt.Errorf("skipping rule due to invalid button code '%s'", target.Button)
 		}
-	}
-	if target.Axis != "" {
+	} else if target.Axis != "" {
 		eventType = evdev.EV_ABS
 		eventCode, ok = evdev.ABSFromString[target.Axis]
 		if !ok {

internal/mappingrules/matching.go

@@ -78,3 +78,11 @@ func (rule *ComboMappingRule) MatchEvent(device *evdev.InputDevice, event *evdev
 	}
 	return nil
 }
+
+func (rule *SimpleMappingRule) OutputName() string {
+	return rule.Output.DeviceName
+}
+
+func (rule *ComboMappingRule) OutputName() string {
+	return rule.Output.DeviceName
+}

internal/mappingrules/types.go

@@ -4,6 +4,7 @@ import "github.com/holoplot/go-evdev"
 
 type MappingRule interface {
 	MatchEvent(*evdev.InputDevice, *evdev.InputEvent) *evdev.InputEvent
+	OutputName() string
 }
 
 // A Simple Mapping Rule can map a button to a button or an axis to an axis.
@@ -22,8 +23,9 @@ type ComboMappingRule struct {
 }
 
 type RuleTarget struct {
-	Device   *evdev.InputDevice
-	Type     evdev.EvType
-	Code     evdev.EvCode
-	Inverted bool
+	DeviceName string
+	Device     *evdev.InputDevice
+	Type       evdev.EvType
+	Code       evdev.EvCode
+	Inverted   bool
 }