fix: replace deprecated go calls

cmd/khelm/fn_test.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"io/ioutil"
 	"os"
 	"path"
 	"path/filepath"
@@ -17,7 +16,7 @@ import (
 )
 
 func TestKptFnCommand(t *testing.T) {
-	dir, err := ioutil.TempDir("", "khelm-fn-test-")
+	dir, err := os.MkdirTemp("", "khelm-fn-test-")
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 	os.Setenv("HELM_HOME", dir)

cmd/khelm/kustomize_plugin_test.go

@@ -3,7 +3,6 @@ package main
 import (
 	"bytes"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -14,7 +13,7 @@ import (
 
 func TestKustomizePlugin(t *testing.T) {
 	file := filepath.Join("..", "..", "example", "include", "generator.yaml")
-	kustomizeGenCfg, err := ioutil.ReadFile(file)
+	kustomizeGenCfg, err := os.ReadFile(file)
 	require.NoError(t, err)
 	os.Setenv(envKustomizePluginConfig, string(kustomizeGenCfg))
 	os.Setenv(envTrustAnyRepo, "true")

cmd/khelm/template_test.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"bytes"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"testing"
@@ -107,7 +106,7 @@ func TestTemplateCommand(t *testing.T) {
 }
 
 func TestTemplateCommandError(t *testing.T) {
-	dir, err := ioutil.TempDir("", "khelm-tpl-test-")
+	dir, err := os.MkdirTemp("", "khelm-tpl-test-")
 	require.NoError(t, err)
 	repoDir := filepath.Join(dir, "repository")
 	defer os.RemoveAll(dir)

pkg/config/config.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"path/filepath"
 	"strings"
 
@@ -117,7 +116,7 @@ func (cfg *ChartConfig) Validate() (errs []string) {
 // ReadGeneratorConfig read the generator configuration
 func ReadGeneratorConfig(reader io.Reader) (cfg *GeneratorConfig, err error) {
 	cfg = &GeneratorConfig{}
-	data, err := ioutil.ReadAll(reader)
+	data, err := io.ReadAll(reader)
 	if err != nil {
 		return nil, errors.Wrap(err, "read chart renderer config")
 	}

pkg/helm/locate.go

@@ -3,7 +3,6 @@ package helm
 import (
 	"context"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"net/url"
 	"os"
@@ -90,7 +89,7 @@ func locateChart(ctx context.Context, cfg *config.LoaderConfig, repos repository
 	if err = os.MkdirAll(destParentDir, 0750); err != nil {
 		return "", errors.WithStack(err)
 	}
-	tmpDestDir, err := ioutil.TempDir(destParentDir, fmt.Sprintf(".tmp-%s-", filepath.Base(destDir)))
+	tmpDestDir, err := os.MkdirTemp(destParentDir, fmt.Sprintf(".tmp-%s-", filepath.Base(destDir)))
 	if err != nil {
 		return "", errors.WithStack(err)
 	}

pkg/helm/render_test.go

@@ -5,7 +5,6 @@ import (
 	"context"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"net/http"
 	"net/http/httptest"
@@ -124,7 +123,7 @@ func TestRender(t *testing.T) {
 }
 
 func TestRenderUntrustedRepositoryError(t *testing.T) {
-	dir, err := ioutil.TempDir("", "khelm-test-untrusted-repo-")
+	dir, err := os.MkdirTemp("", "khelm-test-untrusted-repo-")
 	require.NoError(t, err)
 	defer os.RemoveAll(dir)
 	os.Setenv("HELM_HOME", dir)
@@ -178,7 +177,7 @@ func TestRenderRebuildsLocalDependencies(t *testing.T) {
 	require.NoError(t, err)
 	defer os.RemoveAll(tplDir)
 	data := []byte("apiVersion: fancyapi/v1\nkind: FancyKind\nmetadata:\n  name: sth\nchangedField: changed-value")
-	err = ioutil.WriteFile(tplFile, data, 0600)
+	err = os.WriteFile(tplFile, data, 0600)
 	require.NoError(t, err)
 
 	// Render again and verify that the dependency is rebuilt
@@ -253,7 +252,7 @@ func TestRenderNoDigest(t *testing.T) {
 	repoEntry.URL = srv.URL
 
 	// Generate temp repository configuration pointing to fake private server
-	tmpHelmHome, err := ioutil.TempDir("", "khelm-test-home-")
+	tmpHelmHome, err := os.MkdirTemp("", "khelm-test-home-")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpHelmHome)
 	origHelmHome := os.Getenv("HELM_HOME")
@@ -266,7 +265,7 @@ func TestRenderNoDigest(t *testing.T) {
 	require.NoError(t, err)
 	err = os.Mkdir(filepath.Join(tmpHelmHome, "repository"), 0755)
 	require.NoError(t, err)
-	err = ioutil.WriteFile(filepath.Join(tmpHelmHome, "repository", "repositories.yaml"), b, 0600) // #nosec
+	err = os.WriteFile(filepath.Join(tmpHelmHome, "repository", "repositories.yaml"), b, 0600) // #nosec
 	require.NoError(t, err)
 
 	cfg.Repository = repoEntry.URL
@@ -297,7 +296,7 @@ func TestRenderRepositoryCredentials(t *testing.T) {
 	repoEntry.URL = srv.URL
 
 	// Generate temp repository configuration pointing to fake private server
-	tmpHelmHome, err := ioutil.TempDir("", "khelm-test-home-")
+	tmpHelmHome, err := os.MkdirTemp("", "khelm-test-home-")
 	require.NoError(t, err)
 	defer os.RemoveAll(tmpHelmHome)
 	origHelmHome := os.Getenv("HELM_HOME")
@@ -310,7 +309,7 @@ func TestRenderRepositoryCredentials(t *testing.T) {
 	require.NoError(t, err)
 	err = os.Mkdir(filepath.Join(tmpHelmHome, "repository"), 0755)
 	require.NoError(t, err)
-	err = ioutil.WriteFile(filepath.Join(tmpHelmHome, "repository", "repositories.yaml"), b, 0600) // #nosec
+	err = os.WriteFile(filepath.Join(tmpHelmHome, "repository", "repositories.yaml"), b, 0600) // #nosec
 	require.NoError(t, err)
 
 	for _, c := range []struct {

pkg/helm/repositories.go

@@ -7,7 +7,6 @@ import (
 	"encoding/hex"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"os"
 	"path/filepath"
@@ -348,7 +347,7 @@ type tempRepositories struct {
 }
 
 func newTempRepositories(r *repositories) (*tempRepositories, error) {
-	tmpFile, err := ioutil.TempFile("", "helm-repositories-")
+	tmpFile, err := os.CreateTemp("", "helm-repositories-")
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
@@ -372,7 +371,7 @@ func downloadIndexFile(ctx context.Context, entry *repo.Entry, cacheDir string,
 	if err != nil {
 		return errors.WithStack(err)
 	}
-	tmpIdxFile, err := ioutil.TempFile(filepath.Dir(idxFile), fmt.Sprintf(".tmp-%s-index", entry.Name))
+	tmpIdxFile, err := os.CreateTemp(filepath.Dir(idxFile), fmt.Sprintf(".tmp-%s-index", entry.Name))
 	if err != nil {
 		return errors.WithStack(err)
 	}