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version.go
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version.go
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package command
import (
"bytes"
"fmt"
"github.com/mitchellh/cli"
)
// VersionCommand is a Command implementation that prints the version.
type VersionCommand struct {
Revision string
Version string
VersionPrerelease string
UI cli.Ui
}
// Help prints the Help text for the version sub-command
func (c *VersionCommand) Help() string {
return "Prints Rancher's version information."
}
// Run runs the version sub-command.
func (c *VersionCommand) Run(_ []string) int {
var versionString bytes.Buffer
fmt.Fprintf(&versionString, "Rancher v%s", c.Version)
if c.VersionPrerelease != "" {
fmt.Fprintf(&versionString, ".%s", c.VersionPrerelease)
if c.Revision != "" {
fmt.Fprintf(&versionString, " (%s)", c.Revision)
}
}
c.UI.Output(versionString.String())
return 0
}
// Synopsis provides a precis of the version sub-command.
func (c *VersionCommand) Synopsis() string {
return "Prints the Rancher version"
}