Switch to go mod

vendor/github.com/mudler/docker-companion/api/image.go

@@ -0,0 +1,67 @@
+package api
+
+// This part is an extract from https://github.com/jwilder/docker-squash/
+
+import (
+	"fmt"
+	"os"
+
+	jww "github.com/spf13/jwalterweatherman"
+
+	"os/exec"
+)
+
+type ExportedImage struct {
+	Path         string
+	JsonPath     string
+	VersionPath  string
+	LayerTarPath string
+	LayerDirPath string
+}
+
+func (e *ExportedImage) CreateDirs() error {
+	return os.MkdirAll(e.Path, 0755)
+}
+
+func (e *ExportedImage) TarLayer() error {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+
+	err = os.Chdir(e.LayerDirPath)
+	if err != nil {
+		return err
+	}
+	defer os.Chdir(cwd)
+
+	cmd := exec.Command("sudo", "/bin/sh", "-c", fmt.Sprintf("%s cvf ../layer.tar ./", TarCmd))
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		jww.INFO.Println(out)
+		return err
+	}
+	return nil
+}
+
+func (e *ExportedImage) RemoveLayerDir() error {
+	return os.RemoveAll(e.LayerDirPath)
+}
+
+func (e *ExportedImage) ExtractLayerDir(unpackmode string) error {
+	err := os.MkdirAll(e.LayerDirPath, 0755)
+	if err != nil {
+		return err
+	}
+
+	if err := ExtractLayer(&ExtractOpts{
+		Source:       e.LayerTarPath,
+		Destination:  e.LayerDirPath,
+		Compressed:   true,
+		KeepDirlinks: true,
+		Rootless:     false,
+		UnpackMode:   unpackmode}); err != nil {
+		return err
+	}
+	return nil
+}