Update vendor/

vendor/helm.sh/helm/v3/pkg/chartutil/chartfile.go

@@ -0,0 +1,93 @@
+/*
+Copyright The Helm Authors.
+
+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 chartutil
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/pkg/errors"
+	"sigs.k8s.io/yaml"
+
+	"helm.sh/helm/v3/pkg/chart"
+)
+
+// LoadChartfile loads a Chart.yaml file into a *chart.Metadata.
+func LoadChartfile(filename string) (*chart.Metadata, error) {
+	b, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	y := new(chart.Metadata)
+	err = yaml.Unmarshal(b, y)
+	return y, err
+}
+
+// SaveChartfile saves the given metadata as a Chart.yaml file at the given path.
+//
+// 'filename' should be the complete path and filename ('foo/Chart.yaml')
+func SaveChartfile(filename string, cf *chart.Metadata) error {
+	// Pull out the dependencies of a v1 Chart, since there's no way
+	// to tell the serializer to skip a field for just this use case
+	savedDependencies := cf.Dependencies
+	if cf.APIVersion == chart.APIVersionV1 {
+		cf.Dependencies = nil
+	}
+	out, err := yaml.Marshal(cf)
+	if cf.APIVersion == chart.APIVersionV1 {
+		cf.Dependencies = savedDependencies
+	}
+	if err != nil {
+		return err
+	}
+	return ioutil.WriteFile(filename, out, 0644)
+}
+
+// IsChartDir validate a chart directory.
+//
+// Checks for a valid Chart.yaml.
+func IsChartDir(dirName string) (bool, error) {
+	if fi, err := os.Stat(dirName); err != nil {
+		return false, err
+	} else if !fi.IsDir() {
+		return false, errors.Errorf("%q is not a directory", dirName)
+	}
+
+	chartYaml := filepath.Join(dirName, ChartfileName)
+	if _, err := os.Stat(chartYaml); os.IsNotExist(err) {
+		return false, errors.Errorf("no %s exists in directory %q", ChartfileName, dirName)
+	}
+
+	chartYamlContent, err := ioutil.ReadFile(chartYaml)
+	if err != nil {
+		return false, errors.Errorf("cannot read %s in directory %q", ChartfileName, dirName)
+	}
+
+	chartContent := new(chart.Metadata)
+	if err := yaml.Unmarshal(chartYamlContent, &chartContent); err != nil {
+		return false, err
+	}
+	if chartContent == nil {
+		return false, errors.Errorf("chart metadata (%s) missing", ChartfileName)
+	}
+	if chartContent.Name == "" {
+		return false, errors.Errorf("invalid chart (%s): name must not be empty", ChartfileName)
+	}
+
+	return true, nil
+}