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package main
import (
"encoding/json"
"fmt"
"os"
"github.com/containers/storage"
"github.com/containers/storage/pkg/mflag"
)
func version(flags *mflag.FlagSet, action string, m storage.Store, args []string) int {
version, err := m.Version()
if err != nil {
fmt.Fprintf(os.Stderr, "version: %+v\n", err)
return 1
}
if jsonOutput {
json.NewEncoder(os.Stdout).Encode(version)
} else {
for _, pair := range version {
fmt.Fprintf(os.Stderr, "%s: %s\n", pair[0], pair[1])
}
}
return 0
}
func init() {
commands = append(commands, command{
names: []string{"version"},
usage: "Return containers-storage version information",
minArgs: 0,
action: version,
addFlags: func(flags *mflag.FlagSet, cmd *command) {
flags.BoolVar(&jsonOutput, []string{"-json", "j"}, jsonOutput, "Prefer JSON output")
},
})
}
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