atom/category.go

45 lines
1006 B
Go

package atom
import (
"encoding/xml"
"fmt"
)
type Category struct {
XMLName xml.Name `xml:"category"`
*CommonAttributes
Term string `xml:"term,attr"`
Scheme string `xml:"scheme,attr,omitempty"` // IRI
Label string `xml:"label,attr,omitempty"`
}
// NewCategory creates a new Category. It returns a *Category.
func NewCategory(term string) *Category {
return &Category{Term: term}
}
// SetLabel sets the Label attribute of the Category.
func (c *Category) SetLabel(label string) {
c.Label = Unescape(label)
}
// Check checks the Category for incompatibilities with RFC4287. It returns an
// error.
func (c *Category) Check() error {
if c.Term == "" {
return fmt.Errorf("term attribute of category %v empty", c)
}
if c.Scheme != "" {
if !isValidIRI(c.Scheme) {
return fmt.Errorf("scheme attribute of category %v not correctly formatted", c)
}
}
if !isCorrectlyEscaped(c.Label) {
return fmt.Errorf("label attribute of category %v not correctly escaped", c)
}
return nil
}