Reset master to testing content

internal/input/interruption.go

@@ -0,0 +1,72 @@
+package input
+
+import (
+	"errors"
+	"strings"
+)
+
+const (
+	InterruptAllKeys    = "all"
+	InterruptCommonKeys = "common"
+	InterruptCustomKeys = "custom"
+	MaxInterruptionKeys = 64
+)
+
+// InterruptionSettings selects individual keys, independently of key echo and
+// command bindings. Reader commands retain their own explicit cancellation.
+type InterruptionSettings struct {
+	Mode string   `toml:"mode"`
+	Keys []string `toml:"keys"`
+}
+
+func (settings InterruptionSettings) Validate() error {
+	switch settings.Mode {
+	case InterruptAllKeys, InterruptCommonKeys, InterruptCustomKeys:
+	default:
+		return errors.New("choose a valid speech interruption mode")
+	}
+	if len(settings.Keys) > MaxInterruptionKeys {
+		return errors.New("too many speech interruption keys")
+	}
+	if settings.Mode == InterruptCustomKeys && len(settings.Keys) == 0 {
+		return errors.New("record at least one speech interruption key")
+	}
+	seen := make(map[string]bool, len(settings.Keys))
+	for _, name := range settings.Keys {
+		key := strings.ToLower(name)
+		if name == "" || len(name) > 128 || seen[key] {
+			return errors.New("speech interruption keys must have unique, valid key names")
+		}
+		for _, character := range name {
+			if character != '_' && !(character >= 'a' && character <= 'z') &&
+				!(character >= 'A' && character <= 'Z') && !(character >= '0' && character <= '9') {
+				return errors.New("invalid speech interruption key name")
+			}
+		}
+		seen[key] = true
+	}
+	return nil
+}
+
+func (settings InterruptionSettings) ShouldInterrupt(event Event) bool {
+	if !event.Pressed {
+		return false
+	}
+	switch settings.Mode {
+	case InterruptCommonKeys:
+		switch event.Name {
+		case "Control_L", "Control_R", "Return", "KP_Enter", "space", "KP_Space", "Escape":
+			return true
+		}
+		return false
+	case InterruptCustomKeys:
+		for _, name := range settings.Keys {
+			if strings.EqualFold(name, event.Name) || name == "Tab" && event.Name == "ISO_Left_Tab" {
+				return true
+			}
+		}
+		return false
+	default:
+		return true
+	}
+}