diskii/cmd/delete.go

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// Copyright © 2016 Zellyn Hunter <zellyn@gmail.com>
package cmd
import (
"fmt"
"github.com/zellyn/diskii/disk"
"github.com/zellyn/diskii/types"
)
type DeleteCmd struct {
Order types.DiskOrder `kong:"default='auto',enum='auto,do,po',help='Logical-to-physical sector order.'"`
System string `kong:"default='auto',enum='auto,dos3',help='DOS system used for image.'"`
MissingOk bool `kong:"short='f',help='Overwrite existing file?'"`
DiskImage string `kong:"arg,required,type='existingfile',help='Disk image to modify.'"`
Filename string `kong:"arg,required,help='Filename to use on disk.'"`
}
func (d DeleteCmd) Help() string {
return `Examples:
# Delete file GREMLINS on disk image games.dsk.
diskii rm games.dsk GREMLINS`
}
func (d *DeleteCmd) Run(globals *types.Globals) error {
op, order, err := disk.OpenFilename(d.DiskImage, d.Order, d.System, globals.DiskOperatorFactories, globals.Debug)
if err != nil {
return err
}
deleted, err := op.Delete(d.Filename)
if err != nil {
return err
}
if !deleted && !d.MissingOk {
return fmt.Errorf("file %q not found (use -f to prevent this being an error)", d.Filename)
}
return disk.WriteBack(d.DiskImage, op, order, true)
}