66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
package atom
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import (
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"encoding/xml"
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"fmt"
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"mime"
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)
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type OutOfLineContent struct {
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XMLName xml.Name `xml:"content"`
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*CommonAttributes
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Type string `xml:"type,attr,omitempty"` // MediaType
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SRC string `xml:"src,attr"` // IRI
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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 !isValidMediaType(mediaType) {
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return nil, fmt.Errorf("error creating new out of line content: media type %v invalid", mediaType)
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}
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mediaType, _, _ = mime.ParseMediaType(mediaType)
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iri, ok := content.(string)
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if !ok {
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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(iri) {
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return nil, fmt.Errorf("content %v not a valid uri", iri)
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}
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return &OutOfLineContent{Type: mediaType, SRC: 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 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 !isValidMediaType(mediaType) {
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return fmt.Errorf("type attribute of out of line content %v invalid media type", o)
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}
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if isCompositeMediaType(mediaType) {
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return fmt.Errorf("type attribute of out of line content %v must not be a composite type", o)
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}
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if o.SRC == "" {
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return fmt.Errorf("src attribute of out of line content %v empty", o)
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}
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return nil
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}
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