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pep440_version.go
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/
pep440_version.go
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/*
Copyright [2024] [anchore/grype]
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.
*/
package packages_versions
import (
"fmt"
"github.com/anchore/grype/grype/version"
goPepVersion "github.com/aquasecurity/go-pep440-version"
)
type pep440Version struct {
obj goPepVersion.Version
}
func (p pep440Version) Compare(other *Version) (int, error) {
if other.Format != version.PythonFormat {
return -1, fmt.Errorf("unable to compare pep440 to given format: %s", other.Format)
}
if other.rich.pep440version == nil {
return -1, fmt.Errorf("given empty pep440 object")
}
return other.rich.pep440version.obj.Compare(p.obj), nil
}
func newPep440Version(raw string) (pep440Version, error) {
parsed, err := goPepVersion.Parse(raw)
if err != nil {
return pep440Version{}, fmt.Errorf("could not parse pep440 version: %w", err)
}
return pep440Version{
obj: parsed,
}, nil
}