added helper archive package to create and extract zips

tools/archive/create.go

@@ -0,0 +1,70 @@
+package archive
+
+import (
+	"archive/zip"
+	"io"
+	"io/fs"
+	"os"
+)
+
+// Create creates a new zip archive from src dir content and saves it in dest path.
+func Create(src, dest string) error {
+	zf, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer zf.Close()
+
+	zw := zip.NewWriter(zf)
+	defer zw.Close()
+
+	if err := zipAddFS(zw, os.DirFS(src)); err != nil {
+		// try to cleanup the created zip file
+		os.Remove(dest)
+
+		return err
+	}
+
+	return nil
+}
+
+// note remove after similar method is added in the std lib (https://github.com/golang/go/issues/54898)
+func zipAddFS(w *zip.Writer, fsys fs.FS) error {
+	return fs.WalkDir(fsys, ".", func(name string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			return nil
+		}
+
+		info, err := d.Info()
+		if err != nil {
+			return err
+		}
+
+		h, err := zip.FileInfoHeader(info)
+		if err != nil {
+			return err
+		}
+
+		h.Name = name
+		h.Method = zip.Deflate
+
+		fw, err := w.CreateHeader(h)
+		if err != nil {
+			return err
+		}
+
+		f, err := fsys.Open(name)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		_, err = io.Copy(fw, f)
+
+		return err
+	})
+}