Move skopeo-related code into a new package

The following package and file have been created src/pkg/skopeo/skopeo.go
Signed-off-by: Nieves Montero <[email protected]>

src/cmd/create.go

@@ -700,7 +700,7 @@ func pullImage(image, release string) (bool, error) {
 
 	if promptForDownload {
 
-		infoSize, err := podman.InspectSkopeo("image", imageSize)
+		infoSize, err := podman.Inspect("image", imageSize)
 		if err != nil {
 			return false, fmt.Errorf("cannot get the size of the image")
 		}

src/pkg/podman/podman.go

@@ -280,47 +280,6 @@ func Inspect(typearg string, target string) (map[string]interface{}, error) {
 	return info[0], nil
 }
 
-func InspectSkopeo(typearg string, target string) (interface{}, error) {
-
-	var stdout bytes.Buffer
-
-	args := []string{"inspect", target}
-
-	if err := shell.Run("skopeo", nil, &stdout, nil, args...); err != nil {
-		return nil, err
-	}
-
-	output := stdout.Bytes()
-
-	var info interface{}
-
-	if err := json.Unmarshal(output, &info); err != nil {
-		return nil, err
-	}
-
-	m := info.(map[string]interface{})
-	var totalSize float64 = 0
-	for k, v := range m {
-
-		if k == "LayersData" {
-			vv := v.([]interface{})
-
-			for _, u := range vv {
-
-				uu := u.(map[string]interface{})
-				for j, w := range uu {
-
-					if j == "Size" {
-						totalSize += w.(float64)
-					}
-				}
-			}
-		}
-	}
-	totalSizeIS := (totalSize / 1000000)
-	return int(totalSizeIS), nil
-}
-
 func IsToolboxContainer(container string) (bool, error) {
 	info, err := Inspect("container", container)
 	if err != nil {

src/pkg/skopeo/skopeo.go

@@ -0,0 +1,65 @@
+/*
+ * Copyright © 2019 – 2022 Red Hat Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package skopeo
+
+import (
+	"bytes"
+	"encoding/json"
+
+	"github.com/containers/toolbox/pkg/shell"
+)
+
+func Inspect(typearg string, target string) (interface{}, error) {
+
+	var stdout bytes.Buffer
+
+	args := []string{"inspect", target}
+
+	if err := shell.Run("skopeo", nil, &stdout, nil, args...); err != nil {
+		return nil, err
+	}
+
+	output := stdout.Bytes()
+
+	var info interface{}
+
+	if err := json.Unmarshal(output, &info); err != nil {
+		return nil, err
+	}
+
+	m := info.(map[string]interface{})
+	var totalSize float64 = 0
+	for k, v := range m {
+
+		if k == "LayersData" {
+			vv := v.([]interface{})
+
+			for _, u := range vv {
+
+				uu := u.(map[string]interface{})
+				for j, w := range uu {
+
+					if j == "Size" {
+						totalSize += w.(float64)
+					}
+				}
+			}
+		}
+	}
+	totalSizeIS := (totalSize / 1000000)
+	return int(totalSizeIS), nil
+}