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package file
import (
"fmt"
"log"
"os"
)
// haveDirectory ensures f.path exists as a directory with the desired mode and
// ownership. It is idempotent: an existing directory only has its attributes
// re-enforced, and an existing non-directory is an error.
func (f *File) haveDirectory() error {
log.Printf("processing directory: %s", f.path)
info, err := os.Lstat(f.path)
switch {
case err == nil:
if !info.IsDir() {
return fmt.Errorf("%s exists and is not a directory", f.path)
}
log.Printf("directory %s already exists", f.path)
case os.IsNotExist(err):
log.Printf("creating directory %s with mode %v", f.path, f.mode)
if err := os.MkdirAll(f.path, f.mode); err != nil {
return fmt.Errorf("failed to create directory %s: %w", f.path, err)
}
default:
return fmt.Errorf("failed to stat %s: %w", f.path, err)
}
return f.applyAttributes()
}
// haveAbsent removes f.path if it exists. It is idempotent: a missing path is
// not an error. By default non-empty directories are not removed; combine with
// PruneDirectory() to remove a directory and its contents recursively.
func (f *File) haveAbsent() error {
log.Printf("ensuring absent: %s", f.path)
remove := os.Remove
if f.pruneDirectory {
remove = os.RemoveAll
}
if err := remove(f.path); err != nil {
if os.IsNotExist(err) {
log.Printf("%s already absent", f.path)
return nil
}
return fmt.Errorf("failed to remove %s: %w", f.path, err)
}
log.Printf("removed %s", f.path)
return nil
}
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