/
actions.go
82 lines (69 loc) · 1.52 KB
/
actions.go
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package arc
import (
"fmt"
"os"
"path"
"golang.org/x/text/message"
)
type TranslateError struct {
format string
a []interface{}
}
func (ta *TranslateError) Error() string {
return ta.Translate(nil)
}
func (ta *TranslateError) Translate(printer *message.Printer) string {
if printer != nil {
return printer.Sprintf(ta.format, ta.a...)
}
return fmt.Sprintf(ta.format, ta.a...)
}
func TranslateErrorf(format string, a ...interface{}) error {
ta := &TranslateError{
format: format,
a: a,
}
return ta
}
type FileActionError struct {
FilePaths []string
Err error
}
func (fa *FileActionError) Error() string {
return fa.Err.Error()
}
func (fa *FileActionError) Unwrap() error {
return fa.Err
}
func rename(oldPath, newPath string) error {
if _, err := os.Stat(oldPath); os.IsNotExist(err) {
return &FileActionError{
FilePaths: []string{oldPath},
Err: TranslateErrorf("%s not found", path.Base(oldPath)),
}
}
if _, err := os.Stat(newPath); !os.IsNotExist(err) {
return &FileActionError{
FilePaths: []string{oldPath, newPath},
Err: TranslateErrorf("%s already exists", path.Base(newPath)),
}
}
err := os.Rename(oldPath, newPath)
if err != nil {
return &FileActionError{
FilePaths: []string{oldPath, newPath},
Err: err,
}
}
return nil
}
type RenameAction struct {
OldPath string
NewPath string
}
func (ra *RenameAction) Do() error {
return rename(ra.OldPath, ra.NewPath)
}
func (ra *RenameAction) Undo() error {
return rename(ra.NewPath, ra.OldPath)
}