Code refactoring after #859

pkg/stdin/pipe.go

@@ -0,0 +1,26 @@
+package stdin
+
+import (
+	"errors"
+	"io"
+	"os/exec"
+)
+
+type pipeCloser struct {
+	io.Writer
+	io.Closer
+	cmd *exec.Cmd
+}
+
+func PipeCloser(cmd *exec.Cmd) (io.WriteCloser, error) {
+	stdin, err := cmd.StdinPipe()
+	if err != nil {
+		return nil, err
+	}
+
+	return pipeCloser{stdin, stdin, cmd}, nil
+}
+
+func (p pipeCloser) Close() (err error) {
+	return errors.Join(p.Closer.Close(), p.cmd.Process.Kill(), p.cmd.Wait())
+}