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wikidata_provenance.go
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wikidata_provenance.go
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// Copyright 2020 Ross Spencer, Richard Lehane. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
// Helper functions for cleaning up provenance "source" information in
// the Wikidata identifier.
package wikidata
import ()
// Source strings from Wikidata. We may have a use-case to normalize
// them, but also, we can do this via ShEx on a long-enough time-line.
const (
// Wikidata source strings are those returned by Wikidata
// specifically.
prePronom = "PRONOM"
preKessler = "Gary Kessler's File Signature Table"
// Normalized source strings are those that we want to return from
// the Wikidata identifier to the user so that they can be parsed
// consistently by the consumer.
tnaPronom = "PRONOM (TNA)"
wdPronom = "PRONOM (Wikidata)"
wdNone = "Wikidata reference is empty"
// Provenance to include in source information when the PRONOM
// signatures are being used to compliment those in the Wikidata
// identifier.
pronomOfficial = "PRONOM (Official (%s))"
pronomOfficialContainer = "PRONOM (Official container ID)"
)
// parseProvenance normalizes the provenance string and let's us know
// if the value is in-fact empty.
func parseProvenance(prov string) string {
if prov == prePronom {
prov = wdPronom
}
if prov == "" {
prov = wdNone
}
return prov
}