tmp

Author: rsteube

pkg/choices/choice.go

@@ -0,0 +1,47 @@
+package choices
+
+import (
+	"strings"
+)
+
+type Choice struct {
+	Name    string
+	Variant string
+	Group   string
+}
+
+func (c Choice) Format() string {
+	s := c.Name
+	if c.Variant != "" {
+		s += "/" + c.Variant
+	}
+	if c.Group != "" {
+		s += "@" + c.Group
+	}
+	return s
+}
+
+func (c *Choice) Match(s string) bool {
+	if c == nil {
+		return false
+	}
+
+	other := Parse(s)
+	switch {
+	case c.Name != "" && c.Name != other.Name,
+		c.Variant != "" && c.Variant != other.Variant,
+		c.Group != "" && c.Group != other.Group:
+		return false
+	}
+	return true
+}
+
+func Parse(s string) Choice {
+	nameVariant, group, _ := strings.Cut(s, "@")
+	cName, variant, _ := strings.Cut(nameVariant, "/")
+	return Choice{
+		Name:    cName,
+		Variant: variant,
+		Group:   group,
+	}
+}

pkg/choices/choices.go

@@ -45,8 +45,8 @@ func Set(c Choice) error {
 		return fmt.Errorf("invalid name: %q", c.Format())
 	}
 
-	if c.Group == "" {
-		return fmt.Errorf("missing group: %q", c.Format())
+	if c.Variant == "" && c.Group == "" {
+		return fmt.Errorf("at least one of variant or group must be set: %q", c.Format())
 	}
 
 	configDir, err := xdg.UserConfigDir()