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// Copyright 2015 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package shell
import (
"os"
"time"
)
// CommandRenderer provides methods that may be used to generate shell
// commands for a variety of shell and filesystem operations.
type CommandRenderer interface {
// Chown returns a shell command for changing the ownership of
// a file or directory. The copies the behavior of os.Chown,
// though it also supports names in addition to ints.
Chown(name, user, group string) []string
// Chmod returns a shell command that sets the given file's
// permissions. The result is equivalent to os.Chmod.
Chmod(path string, perm os.FileMode) []string
// WriteFile returns a shell command that writes the provided
// content to a file. The command is functionally equivalent to
// ioutil.WriteFile with permissions from the current umask.
WriteFile(filename string, data []byte) []string
// Mkdir returns a shell command for creating a directory. The
// command is functionally equivalent to os.MkDir using permissions
// appropriate for a directory.
Mkdir(dirname string) []string
// MkdirAll returns a shell command for creating a directory and
// all missing parent directories. The command is functionally
// equivalent to os.MkDirAll using permissions appropriate for
// a directory.
MkdirAll(dirname string) []string
// Touch returns a shell command that updates the atime and ctime
// of the named file. If the provided timestamp is nil then the
// current time is used. If the file does not exist then it is
// created. If UTC is desired then Time.UTC() should be called
// before calling Touch.
Touch(filename string, timestamp *time.Time) []string
}
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