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// SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
package spdxlib
import (
"github.com/spdx/tools-golang/spdx"
"github.com/spdx/tools-golang/spdx/v2/common"
)
// FilterRelationships returns a slice of Element IDs returned by the given filter closure. The closure is passed
// one relationship at a time, and it can return an ElementID or nil.
func FilterRelationships(doc *spdx.Document, filter func(*spdx.Relationship) *common.ElementID) ([]common.ElementID, error) {
elementIDs := []common.ElementID{}
for _, relationship := range doc.Relationships {
if id := filter(relationship); id != nil {
elementIDs = append(elementIDs, *id)
}
}
return elementIDs, nil
}
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