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mod.go
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mod.go
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/*
Copyright 2022 The Kubernetes Authors.
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.
*/
/*
Copyright 2022 The Kubernetes Authors.
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 helpers
import (
"fmt"
"os"
"golang.org/x/mod/modfile"
)
type mod struct {
path string
content []byte
}
func newMod(path string) (mod, error) {
var m mod
content, err := os.ReadFile(path) //#nosec
if err != nil {
return m, err
}
return mod{
path: path,
content: content,
}, nil
}
func (m mod) FindDependencyVersion(dependency string) (string, error) {
f, err := modfile.Parse(m.path, m.content, nil)
if err != nil {
return "", err
}
var version string
for _, entry := range f.Require {
if entry.Mod.Path == dependency {
version = entry.Mod.Version
break
}
}
if version == "" {
return version, fmt.Errorf("could not find required package: %s", dependency)
}
for _, entry := range f.Replace {
if entry.New.Path == dependency && entry.New.Version != "" {
version = entry.New.Version
}
}
return version, nil
}