use os-agnostic base function for configmaps and secrets

api/internal/utils/pathsplitter.go

@@ -3,7 +3,10 @@
 
 package utils
 
-import "strings"
+import (
+	"os"
+	"strings"
+)
 
 // TODO: Move these to kyaml
 
@@ -62,3 +65,28 @@ func SmarterPathSplitter(path string, delimiter string) []string {
 	}
 	return result
 }
+
+// This function is the same as golang's builtin path.Base, except that
+// this is os-agnostic.
+// Base returns the last element of path.
+// Trailing slashes are removed before extracting the last element.
+// If the path is empty, Base returns ".".
+// If the path consists entirely of slashes, Base returns "/".
+func Base(path string) string {
+	if path == "" {
+		return "."
+	}
+	// Strip trailing slashes.
+	for len(path) > 0 && path[len(path)-1] == os.PathSeparator {
+		path = path[0 : len(path)-1]
+	}
+	// Find the last element
+	if i := strings.LastIndex(path, string(os.PathSeparator)); i >= 0 {
+		path = path[i+1:]
+	}
+	// If empty now, it had only slashes.
+	if path == "" {
+		return string(os.PathSeparator)
+	}
+	return path
+}

api/kv/kv.go

@@ -8,13 +8,13 @@ import (
 	"bytes"
 	"fmt"
 	"os"
-	"path"
 	"strings"
 	"unicode"
 	"unicode/utf8"
 
 	"github.com/pkg/errors"
 	"sigs.k8s.io/kustomize/api/ifc"
+	"sigs.k8s.io/kustomize/api/internal/utils"
 	"sigs.k8s.io/kustomize/api/types"
 )
 
@@ -183,7 +183,7 @@ func parseFileSource(source string) (keyName, filePath string, err error) {
 	numSeparators := strings.Count(source, "=")
 	switch {
 	case numSeparators == 0:
-		return path.Base(source), source, nil
+		return utils.Base(source), source, nil
 	case numSeparators == 1 && strings.HasPrefix(source, "="):
 		return "", "", fmt.Errorf("key name for file path %v missing", strings.TrimPrefix(source, "="))
 	case numSeparators == 1 && strings.HasSuffix(source, "="):