working commit

vendor/helm.sh/helm/v4/internal/urlutil/urlutil.go

@@ -0,0 +1,73 @@
+/*
+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 urlutil
+
+import (
+	"net/url"
+	"path"
+	"path/filepath"
+)
+
+// URLJoin joins a base URL to one or more path components.
+//
+// It's like filepath.Join for URLs. If the baseURL is pathish, this will still
+// perform a join.
+//
+// If the URL is unparsable, this returns an error.
+func URLJoin(baseURL string, paths ...string) (string, error) {
+	u, err := url.Parse(baseURL)
+	if err != nil {
+		return "", err
+	}
+	// We want path instead of filepath because path always uses /.
+	all := []string{u.Path}
+	all = append(all, paths...)
+	u.Path = path.Join(all...)
+	return u.String(), nil
+}
+
+// Equal normalizes two URLs and then compares for equality.
+func Equal(a, b string) bool {
+	au, err := url.Parse(a)
+	if err != nil {
+		a = filepath.Clean(a)
+		b = filepath.Clean(b)
+		// If urls are paths, return true only if they are an exact match
+		return a == b
+	}
+	bu, err := url.Parse(b)
+	if err != nil {
+		return false
+	}
+
+	for _, u := range []*url.URL{au, bu} {
+		if u.Path == "" {
+			u.Path = "/"
+		}
+		u.Path = filepath.Clean(u.Path)
+	}
+	return au.String() == bu.String()
+}
+
+// ExtractHostname returns hostname from URL
+func ExtractHostname(addr string) (string, error) {
+	u, err := url.Parse(addr)
+	if err != nil {
+		return "", err
+	}
+	return u.Hostname(), nil
+}