func (s Stemcell) Latest() (string, error) {
latestVersion := "0"
if len(s.Versions) == 0 {
return "", errors.New("no stemcell versions found, cannot get latest")
}
for _, version := range s.Versions {
semVersion, err := semver.ParseTolerant(version)
if err != nil {
return "", err
}
semLatestVersion, err := semver.ParseTolerant(latestVersion)
if err != nil {
// Not tested
return "", err
}
if semVersion.GT(semLatestVersion) {
latestVersion = version
}
}
return latestVersion, nil
}
// IsNewer returns true if this release is newer than a given semver string
func (g *GitHubRelease) IsNewer(ver string) (isNewer bool, err error) {
var version semver.Version
if version, err = semver.ParseTolerant(ver); err != nil {
return
}
isNewer = g.Version.GT(version)
return
}
func getReleases(owner, repo string) (releases []GitHubRelease, err error) {
var data []byte
if data, err = get(fmt.Sprintf("https://api.github.com/repos/%s/%s/releases", owner, repo), nil); err != nil {
return
}
if err = json.NewDecoder(bytes.NewReader(data)).Decode(&releases); err != nil {
return
}
for i := range releases {
releases[i].Version, _ = semver.ParseTolerant(releases[i].Tag)
}
sort.Sort(byVersion(releases))
return
}