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package sh
import (
"fmt"
"io"
"os"
)
// Rm removes the given file or directory even if non-empty. It will not return
// an error if the target doesn't exist, only if the target cannot be removed.
func Rm(path string) error {
err := os.RemoveAll(path)
if err == nil || os.IsNotExist(err) {
return nil
}
return fmt.Errorf(`failed to remove %s: %v`, path, err)
}
// Copy robustly copies the source file to the destination, overwriting the destination if necessary.
func Copy(dst string, src string) error {
from, err := os.Open(src)
if err != nil {
return fmt.Errorf(`can't copy %s: %v`, src, err)
}
defer from.Close()
finfo, err := from.Stat()
if err != nil {
return fmt.Errorf(`can't stat %s: %v`, src, err)
}
to, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, finfo.Mode())
if err != nil {
return fmt.Errorf(`can't copy to %s: %v`, dst, err)
}
defer to.Close()
_, err = io.Copy(to, from)
if err != nil {
return fmt.Errorf(`error copying %s to %s: %v`, src, dst, err)
}
return nil
}
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