Function newTempFile

internal/driver/tempfile.go:25–36

newTempFile returns a new output file in dir with the provided prefix and suffix.

(dir, prefix, suffix string)

// newTempFile returns a new output file in dir with the provided prefix and suffix.
func newTempFile(dir, prefix, suffix string) (*os.File, error) {
	for index := 1; index < 10000; index++ {
		switch f, err := os.OpenFile(filepath.Join(dir, fmt.Sprintf("%s%03d%s", prefix, index, suffix)), os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666); {
		case err == nil:
			return f, nil
		case !os.IsExist(err):
			return nil, err
		}
	}
	// Give up
	return nil, fmt.Errorf("could not create file of the form %s%03d%s", prefix, 1, suffix)
}

var tempFiles []string
var tempFilesMu = sync.Mutex{}