Remove github.com/otiai10/copy dependency

Signed-off-by: Oleksandr Redko <[email protected]>

go.mod

@@ -27,7 +27,6 @@ require (
 	github.com/opencontainers/image-spec v1.1.0-rc5
 	github.com/opencontainers/selinux v1.11.0
 	github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f
-	github.com/otiai10/copy v1.14.0
 	github.com/proglottis/gpgme v0.1.3
 	github.com/secure-systems-lab/go-securesystemslib v0.8.0
 	github.com/sigstore/fulcio v1.4.3

go.sum

@@ -305,9 +305,6 @@ github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f h1:/UDgs8FGMqwnHagNDPGOlts35QkhAZ8by3DR7nMih7M=
 github.com/ostreedev/ostree-go v0.0.0-20210805093236-719684c64e4f/go.mod h1:J6OG6YJVEWopen4avK3VNQSnALmmjvniMmni/YFYAwc=
-github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=
-github.com/otiai10/copy v1.14.0/go.mod h1:ECfuL02W+/FkTWZWgQqXPWZgW9oeKCSQ5qVfSc4qc4w=
-github.com/otiai10/mint v1.5.1 h1:XaPLeE+9vGbuyEHem1JNk3bYc7KKqyI/na0/mLd/Kks=
 github.com/pelletier/go-toml v1.7.0/go.mod h1:vwGMzjaWMwyfHwgIBhI2YUM4fB6nL6lVAvS1LBMMhTE=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=

oci/layout/oci_delete_test.go

@@ -2,15 +2,14 @@ package layout
 
 import (
 	"context"
-	"fmt"
+	"io"
 	"os"
 	"path/filepath"
 	"testing"
 
 	"github.com/containers/image/v5/types"
 	digest "github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
-	cp "github.com/otiai10/copy"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -276,7 +275,7 @@ func TestReferenceDeleteImage_multipleImages_twoIdenticalReferences(t *testing.T
 
 func loadFixture(t *testing.T, fixtureName string) string {
 	tmpDir := t.TempDir()
-	err := cp.Copy(fmt.Sprintf("fixtures/%v/", fixtureName), tmpDir)
+	err := copyDir(filepath.Join("fixtures", fixtureName), tmpDir)
 	require.NoError(t, err)
 	return tmpDir
 }
@@ -296,3 +295,61 @@ func assertBlobDoesNotExist(t *testing.T, blobsDir string, blobDigest string) {
 	_, err = os.Stat(blobPath)
 	require.True(t, os.IsNotExist(err))
 }
+
+// copyDir copies a whole directory src recursively to dst.
+func copyDir(src, dst string) error {
+	info, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+
+	if err := os.MkdirAll(dst, info.Mode()); err != nil {
+		return err
+	}
+
+	dirEntries, err := os.ReadDir(src)
+	if err != nil {
+		return err
+	}
+
+	for _, dirEntry := range dirEntries {
+		srcPath := filepath.Join(src, dirEntry.Name())
+		dstPath := filepath.Join(dst, dirEntry.Name())
+
+		copy := copyFile
+		if dirEntry.IsDir() {
+			copy = copyDir
+		}
+
+		if err := copy(srcPath, dstPath); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// copyFile copies src file to dst file.
+func copyFile(src, dst string) error {
+	srcFile, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer srcFile.Close()
+
+	dstFile, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer dstFile.Close()
+
+	if _, err := io.Copy(dstFile, srcFile); err != nil {
+		return err
+	}
+
+	info, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+
+	return os.Chmod(dst, info.Mode())
+}