mirror of https://github.com/docker/compose.git
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package dockerclassic
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import (
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"context"
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"fmt"
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"os"
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"os/exec"
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"strings"
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"github.com/spf13/cobra"
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apicontext "github.com/docker/api/context"
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"github.com/docker/api/context/store"
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)
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// ClassicCliName name of the classic cli binary
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const ClassicCliName = "docker-classic"
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// Exec delegates to docker-classic
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func Exec(ctx context.Context) {
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currentContext := apicontext.CurrentContext(ctx)
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s := store.ContextStore(ctx)
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_, err := s.Get(currentContext)
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// Only run original docker command if the current context is not
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// ours.
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if err != nil {
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cmd := exec.CommandContext(ctx, ClassicCliName, os.Args[1:]...)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Run(); err != nil {
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if exiterr, ok := err.(*exec.ExitError); ok {
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os.Exit(exiterr.ExitCode())
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}
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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os.Exit(0)
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}
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}
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// ExecCmd delegates the cli command to docker-classic. The error is never returned (process will exit with docker classic exit code), the return type is to make it easier to use with cobra commands
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func ExecCmd(command *cobra.Command) error {
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Exec(command.Context())
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return nil
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}
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// IsDefaultContextCommand checks if the command exists in the classic cli (issues a shellout --help)
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func IsDefaultContextCommand(dockerCommand string) bool {
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cmd := exec.Command(ClassicCliName, dockerCommand, "--help")
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b, e := cmd.CombinedOutput()
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if e != nil {
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fmt.Println(e)
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}
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output := string(b)
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contains := strings.Contains(output, "Usage:\tdocker "+dockerCommand)
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return contains
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}
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