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/*
Copyright 2020 Docker Compose CLI authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package compose
import (
"fmt"
"strings"
"github.com/docker/cli/cli/command"
"github.com/docker/compose/v2/cmd/formatter"
"github.com/spf13/cobra"
"github.com/docker/compose/v2/internal"
)
type versionOptions struct {
format string
short bool
}
func versionCommand(dockerCli command.Cli) *cobra.Command {
opts := versionOptions{}
cmd := &cobra.Command{
Use: "version [OPTIONS]",
Short: "Show the Docker Compose version information",
Args: cobra.NoArgs,
RunE: func(cmd *cobra.Command, _ []string) error {
runVersion(opts, dockerCli)
return nil
},
PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
// overwrite parent PersistentPreRunE to avoid trying to load
// compose file on version command if COMPOSE_FILE is set
return nil
},
}
// define flags for backward compatibility with com.docker.cli
flags := cmd.Flags()
flags.StringVarP(&opts.format, "format", "f", "", "Format the output. Values: [pretty | json]. (Default: pretty)")
flags.BoolVar(&opts.short, "short", false, "Shows only Compose's version number")
return cmd
}
func runVersion(opts versionOptions, dockerCli command.Cli) {
if opts.short {
_, _ = fmt.Fprintln(dockerCli.Out(), strings.TrimPrefix(internal.Version, "v"))
return
}
if opts.format == formatter.JSON {
_, _ = fmt.Fprintf(dockerCli.Out(), "{\"version\":%q}\n", internal.Version)
return
}
_, _ = fmt.Fprintln(dockerCli.Out(), "Docker Compose version", internal.Version)
}
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