Initial commit

vendor/github.com/hyperhq/hypercli/pkg/chrootarchive/diff_windows.go

@@ -0,0 +1,44 @@
+package chrootarchive
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/hyperhq/hypercli/pkg/archive"
+	"github.com/hyperhq/hypercli/pkg/longpath"
+)
+
+// applyLayerHandler parses a diff in the standard layer format from `layer`, and
+// applies it to the directory `dest`. Returns the size in bytes of the
+// contents of the layer.
+func applyLayerHandler(dest string, layer archive.Reader, options *archive.TarOptions, decompress bool) (size int64, err error) {
+	dest = filepath.Clean(dest)
+
+	// Ensure it is a Windows-style volume path
+	dest = longpath.AddPrefix(dest)
+
+	if decompress {
+		decompressed, err := archive.DecompressStream(layer)
+		if err != nil {
+			return 0, err
+		}
+		defer decompressed.Close()
+
+		layer = decompressed
+	}
+
+	tmpDir, err := ioutil.TempDir(os.Getenv("temp"), "temp-docker-extract")
+	if err != nil {
+		return 0, fmt.Errorf("ApplyLayer failed to create temp-docker-extract under %s. %s", dest, err)
+	}
+
+	s, err := archive.UnpackLayer(dest, layer, nil)
+	os.RemoveAll(tmpDir)
+	if err != nil {
+		return 0, fmt.Errorf("ApplyLayer %s failed UnpackLayer to %s", err, dest)
+	}
+
+	return s, nil
+}