64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
package atom
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import (
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"errors"
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"fmt"
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"mime"
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"reflect"
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)
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type OutOfLineContent struct {
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*CommonAttributes
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Type MediaType `xml:"type,attr,omitempty"`
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SRC IRI `xml:"src,attr"`
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}
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// newOutOfLineContent creates a new OutOfLineContent. It returns a
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// *OutOfLineContent and an error.
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func newOutOfLineContent(mediaType string, content any) (*OutOfLineContent, error) {
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if mediaType, _, err := mime.ParseMediaType(mediaType); err != nil {
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return nil, fmt.Errorf("media type %v incompatible with out of line content", mediaType)
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}
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if reflect.TypeOf(content).Kind() != reflect.String {
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return nil, fmt.Errorf("content type %T incompatible with out of line content", content)
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}
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if !isValidIRI(content.(IRI)) {
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return nil, errors.New("content not a valid uri")
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}
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return &OutOfLineContent{Type: MediaType(mediaType), SRC: content.(IRI)}, nil
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}
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// isContent checks whether the OutOfLineContent is a Content. It returns a
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// bool.
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func (o *OutOfLineContent) isContent() bool { return true }
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// hasSRC checks whether the OutOfLineContent has a SRC attribute. It returns a
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// bool.
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func (o *OutOfLineContent) hasSRC() bool { return true }
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// getType returns the Type of the OutOfLineContent as a string.
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func (o *OutOfLineContent) getType() string { return string(o.Type) }
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// Check checks the OutOfLineContent for incompatibilities with RFC4287. It
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// returns an error.
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func (o *OutOfLineContent) Check() error {
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mediaType := o.getType()
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if mediaType, _, err := mime.ParseMediaType(mediaType); err != nil {
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return fmt.Errorf("type attribute %v incompatible with out of line content", mediaType)
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}
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if isCompositeMediaType(mediaType) {
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return errors.New("type attribute of out of line content must not be a composite type")
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}
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if o.SRC == "" {
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return errors.New("src attribute of out of line content empty")
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}
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return nil
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}
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