package sh

// Implementations must not retain p.
type Writer interface {
        Write(p []byte) (n int, err error)
}


// Implementations must not retain p.
type Argv interface {
        InitIO(out io.Writer, err io.Writer)
        InitPB(pb *argvpb.Argv)
        WriteOUT(bytes []byte)
        WriteERR(bytes []byte)
        Stdout(out io.Writer)
        Stderr(err io.Writer)
        Match() (matches []string, err error)
        Help() (help string, err error)
        Exit(s string, err error)
}

// Implementations must not retain p.
type Command interface {
        Run(pb *shpb.Command)
        Start(pb *shpb.Command)
        Exit(pb *shpb.Command)
}