phylum/server/internal/command/fs/cat.go

package fs

import (
	"fmt"
	"io"
	"os"

	"github.com/shroff/phylum/server/internal/command/common"
	"github.com/spf13/cobra"
)

func setupCatCommand() *cobra.Command {
	cmd := cobra.Command{
		Use:   "cat [<path> | <uuid>]",
		Short: "Output resource Contents",
		Args:  cobra.ExactArgs(1),
		Run: func(cmd *cobra.Command, args []string) {
			f := common.UserFileSystem(cmd)
			pathOrUUID := args[0]
			r, err := f.ResourceByPathOrUUID(pathOrUUID)
			if err != nil {
				fmt.Println("cannot open'" + pathOrUUID + "': " + err.Error())
				os.Exit(1)
			}

			if r.Dir {
				fmt.Println("cannot read'" + pathOrUUID + "': is a directory")
				os.Exit(2)
			}

			in, err := f.OpenRead(r, 0, -1)
			if err != nil {
				fmt.Println("cannot read'" + pathOrUUID + "': " + err.Error())
				os.Exit(3)
			}
			if _, err := io.Copy(os.Stdout, in); err != nil {
				fmt.Println("cannot output'" + pathOrUUID + "': " + err.Error())
				os.Exit(4)
			}
		},
	}

	return &cmd
}