aerc/commands/cd.go

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package commands
import (
"errors"
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"os"
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"git.sr.ht/~sircmpwn/aerc2/widgets"
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"github.com/mitchellh/go-homedir"
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)
var (
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previousDir string
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)
func init() {
Register("cd", ChangeDirectory)
}
func ChangeDirectory(aerc *widgets.Aerc, args []string) error {
if len(args) != 2 {
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return errors.New("Usage: cd <directory>")
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}
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cwd, err := os.Getwd()
if err != nil {
return err
}
var target string
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if args[1] == "-" {
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if previousDir == "" {
return errors.New("No previous folder to return to")
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} else {
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target = previousDir
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}
} else {
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target = args[1]
}
target, err = homedir.Expand(target)
if err != nil {
return err
}
if err := os.Chdir(target); err == nil {
previousDir = cwd
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}
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return err
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}