validate/url.go

package validate

import "net/url"

var (
	ErrInvalidURL Error = NewError("invalid URL")
)

// URL validates that a string is an absolute URL (with a scheme) or an
// absolute path, per net/url.ParseRequestURI. "example.com" with no
// scheme is rejected.
func URL(value string) error {
	if _, err := url.ParseRequestURI(value); err != nil {
		return ErrInvalidURL
	}

	return nil
}