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version.go
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version.go
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package utils
import (
"bytes"
"os"
"path/filepath"
"github.com/Masterminds/semver/v3"
)
var versionFilePath string
func init() {
userHomeDir, err := os.UserHomeDir()
if err != nil {
userHomeDir = os.TempDir()
}
versionFilePath = filepath.Join(userHomeDir, AperturectlRootDir, "version")
}
// CreateVersionFileIfNotExists creates a version file if it does not exist.
func createVersionFileIfNotExists(version string) error {
if _, err := os.Stat(versionFilePath); os.IsNotExist(err) {
return UpdateVersionFile(version)
}
return nil
}
// IsCurrentVersionNewer checks if the version of aperturectl is newer than on disk.
func IsCurrentVersionNewer(version string) (bool, error) {
versionFile, err := os.Open(versionFilePath)
if err != nil {
if os.IsNotExist(err) {
_ = createVersionFileIfNotExists(version)
return true, nil
}
return false, err
}
defer versionFile.Close()
// read version from file into bytes buffer
versionOnFile := new(bytes.Buffer)
_, err = versionOnFile.ReadFrom(versionFile)
if err != nil {
return false, err
}
semverVersion, _ := semver.NewVersion(version)
semverVersionOnFile, _ := semver.NewVersion(versionOnFile.String())
return semverVersion.Compare(semverVersionOnFile) > 0, nil
}
// UpdateVersionFile updates the version file with the current version.
func UpdateVersionFile(version string) error {
// create all directories in the path if they do not exist
err := os.MkdirAll(filepath.Dir(versionFilePath), 0o755)
if err != nil {
return err
}
// create version file
versionFile, err := os.Create(versionFilePath)
if err != nil {
return err
}
defer versionFile.Close()
_, err = versionFile.WriteString(version)
if err != nil {
return err
}
return nil
}