35 lines
876 B
Go
35 lines
876 B
Go
package objutil
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import (
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"bytes"
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"context"
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"github.com/nspcc-dev/neofs-api-go/object"
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)
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// Verifier is an interface for checking whether an object conforms to a certain criterion.
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// Nil error is equivalent to matching the criterion.
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type Verifier interface {
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Verify(context.Context, *object.Object) error
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}
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// MarshalHeaders marshals all object headers which are "higher" than to-th extended header.
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func MarshalHeaders(obj *object.Object, to int) ([]byte, error) {
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buf := new(bytes.Buffer)
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if sysHdr, err := obj.SystemHeader.Marshal(); err != nil {
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return nil, err
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} else if _, err := buf.Write(sysHdr); err != nil {
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return nil, err
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}
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for i := range obj.Headers[:to] {
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if header, err := obj.Headers[i].Marshal(); err != nil {
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return nil, err
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} else if _, err := buf.Write(header); err != nil {
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return nil, err
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}
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}
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return buf.Bytes(), nil
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}
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