44 lines
994 B
Go
44 lines
994 B
Go
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package docker
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import (
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"fmt"
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"strings"
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"github.com/coreos/go-semver/semver"
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)
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// Default tags returns a set of default suggested tags based on
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// the commit ref.
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func DefaultTags(ref string) []string {
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if !strings.HasPrefix(ref, "refs/tags/") {
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return []string{"latest"}
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}
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v := stripTagPrefix(ref)
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version, err := semver.NewVersion(v)
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if err != nil {
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return []string{"latest"}
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}
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if version.PreRelease != "" || version.Metadata != "" {
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return []string{
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version.String(),
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}
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}
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if version.Major == 0 {
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return []string{
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fmt.Sprintf("%d.%d", version.Major, version.Minor),
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fmt.Sprintf("%d.%d.%d", version.Major, version.Minor, version.Patch),
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}
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}
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return []string{
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fmt.Sprint(version.Major),
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fmt.Sprintf("%d.%d", version.Major, version.Minor),
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fmt.Sprintf("%d.%d.%d", version.Major, version.Minor, version.Patch),
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}
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}
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func stripTagPrefix(ref string) string {
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ref = strings.TrimPrefix(ref, "refs/tags/")
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ref = strings.TrimPrefix(ref, "v")
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return ref
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}
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